The gasification system of rubbish, organic waste and equipment
Affiliated technical field
The utility model relates to the treatment facility of rubbish, organic waste, specially refers to refuse gasification equipment.
Background technology
Current, energy shortage, the situation is tense in environmental protection.Rubbish is along with the continuous expansion of the development of Chinese national economy and city size and increase sharply, and the content of its objectionable constituent is also more and more higher, as handle bad, to pollute the environment, threaten people health, the progress that this not only can restrict society also has influence on the Sustainable development of national economy.Current, China handles domestic refuse and mainly contains Sanitary Landfill Technology, compost (biochemistry) technology and incineration technology, the major part area adopts sanitary landfill method to handle domestic refuse, and this not only need take a large amount of soils, waste resource, and easy contaminated land and underground water; The employing composting process is only utilized the organism about 40%, need to build supporting burning process equipment, also need sanitary filling field and match, there is contaminated soil in the heavy metal in the compost goods and enters the possibility of food cycle crop, has the hidden danger of secondary pollution equally; Adopt burning method to handle domestic waste, waste heat is used for generating electricity or heat supply, can accomplish minimizing, recycling treatment domestic refuse, but because domestic refuse water content height, calorific value are low, general garbage incinerating system needs the conventional fuel for combustion supporting with coal or fuel oil and so on when operation, have pollutant load height in the flue gas simultaneously, can not effectively eliminate carcinogenic violent in toxicity Dioxins and shortcomings such as furans, flue gas purification system complexity; Existing garbage incinerating system only adapts to the processing domestic waste, and can not spread to villages and small towns, can not realize low cost and reach the villages and small towns domestic refuse that processing moisture is higher, calorific value is lower of environmental requirement.
Rubbish, organic waste are converted into the secondary energy of cleaning by the method for gasification or indirect liquefaction, can obtain dual beneficial effect, the one, can solve problem of environmental pollution, the 2nd, can break away from dependence to the oil coal resources.Because the characteristics of domestic refuse are that low, the chloride thing of water content height, calorific value is many, easily generate the violent in toxicity Dioxins during burning, the synthetic gas calorific value that changes into the equipment of routine is low, quality does not reach the requirement of application, therefore, do not see that so far the handlebar domestic refuse is converted into the commercial applications report of secondary clean energy.
The utility model content
The purpose of this utility model is the shortcoming that will overcome prior art and equipment, the combination that realizes rubbish, organic waste utilizes, in the treating refuse of dissolving, realization is converted into rubbish the synthetic gas of high heating value, institute's production of synthetic gas is used to produce the secondary clean energy products that comprises town gas, hydrogen, methyl alcohol, dme liquefied gas, can obtain business-like application thereby make rubbish transform project.Described rubbish, organic waste comprise domestic refuse, medical waste, agricultural wastes, forestry waste, wood working waste and industrial high molecular waste material.
A kind of rubbish of the present utility model, the gasification system of organic waste, the gasification and the treating plant that comprise domestic refuse, system is mainly by air dryer (1), vapourizing furnace (2), dedusting/treating plant, compressor (14), gas holder (15) and connecting tube are formed, wherein: the front portion of air dryer (1) is disposed with rubbish hopper (102) and air outlet (103), the rear portion is provided with suction opening (105), discharge port (106) is at the afterbody of air dryer (1), during the equipment operation, make rubbish material be full of the inner chamber of air dryer (1), wind regime is sent in the air dryer (1) from air outlet (103), draw air dryer (1) from suction opening (105) again, the bed of material that makes air-flow pass through rubbish material is taken away moisture, rubbish material is dried up, there is spiral conveyer (104) that rubbish material is sent to the rear portion by the front portion in the air dryer (1), rubbish material carries out air-dry while moving at air dryer (1), send into vapourizing furnace by the discharge port (106) of afterbody then; Vapourizing furnace (2) is a gas phase cycle gasification stove, baking zone (2-VI), pyrolysis zone (2-V), gasification one district (2-IV), gasification two districts (2-II), burnt zone (2-III) and accumulation of heat chamber (2-I) are set in the stove, and the opening for feed of vapourizing furnace (201) is at the top of baking zone (2-VI); Described accumulation of heat chamber (2-I) is a labyrinth formation, high-temperature synthesis gas is by the accumulation of heat chamber time, given the accumulation of heat furnace wall a part of thermal energy transfer, utilize the accumulation of heat furnace wall to hold storage heat energy, make the hot environment of keeping in the accumulation of heat chamber (2-I), the gasification continuity is carried out, thereby prolonged the high-temperature gasification stroke in the stove, simultaneously also by accumulation of heat furnace wall (207) to the gasification one district (2-IV), pyrolysis zone (2-V) and baking zone (2-VI) radiant heat energy, a part of heat is provided for the heat absorption of garbage fuel oven dry, pyrolysis and gasification is required; Vapourizing furnace is outer to constitute the gas phase circulation loop by recirculation blower (228) and circulation airduct (229), gas (vapour) the attitude mixture that baking zone in the vapourizing furnace (2-VI), pyrolysis zone (2-V) and gasification one district (2-IV) are generated carries out the cycle gasification processing, eliminates tar, the coal smoke in the synthetic gas and disintegrates Dioxins; Dedusting/treating plant comprises tornado dust collector (11), wet cleaner (12), sack cleaner (12b) one or more combinations wherein.Layout between each equipment is set to: air dryer (1) is the prime equipment of gasification system, the back level equipment of air dryer (1) is vapourizing furnace (2), the back level of vapourizing furnace (2) is dedusting/treating plant, the back level of dedusting/treating plant is compressor (14), and the back level of compressor (14) is gas holder (15).Mode of connection between each equipment is following wherein a kind of:
A. when dedusting/treating plant only is set to wet cleaner (12) or sack cleaner (12b), in the system, the discharge port (106) of air dryer (1) is connected to the opening for feed (201) of vapourizing furnace (2), the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (1204) of wet cleaner (12) or sack cleaner (12b) by bleed blower fan (13), the purification syngas outlet (1201) of wet cleaner (12) or sack cleaner (12b) is connected to the suction opening of compressor (14), and the venting port of compressor (14) is connected to gas holder (15);
B. when dedusting/treating plant is set to tornado dust collector (11) and wet cleaner (12) simultaneously, in the system, the discharge port (106) of air dryer (1) is connected to the opening for feed (201) of vapourizing furnace (2), the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (1101) of tornado dust collector (11), the syngas outlet (1102) of tornado dust collector (11) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13), the purification syngas outlet (1201) of wet cleaner (12) is connected to the suction opening of compressor (14), and the venting port of compressor (14) is connected to gas holder (15).
When system moves, the hot blast after air preheater (9) heating by the rubbish material layer in the air dryer (1), the service temperature of control air dryer (1) is between 70~110 ℃, the residence time of rubbish material in air-dry apparatus is 1~3 hour, the garbage fuel water content of high-moisture was greatly reduced before entering vapourizing furnace, thereby reduce the energy expenditure in the vapourizing furnace.Sending in the vapourizing furnace from the opening for feed (201) of vapourizing furnace (2) through the garbage fuel of the air-dry processing of air dryer (1), simultaneously, air or oxygen or water vapor are sent into gasification one district (2-IV) in the stove and two districts (2-II) of gasifying as vaporized chemical, garbage fuel burns by oven dry, pyrolysis, gasification and carbon residue in vapourizing furnace (2), and generating with carbon monoxide and hydrogen is the synthetic gas of main component; Garbage fuel finishes gasification in vapourizing furnace (2) and the lime-ash of carbon residue after burning enters hydrolock slag bath (25) by slag-drip opening, and lime-ash can be used as produces building materials or fertilizer; Generating synthetic gas in the vapourizing furnace (2) draws from the synthetic gas output interface (203) of vapourizing furnace, behind waste heat boiler recovery heat, carry out dedusting and purifying treatment by dedusting/treating plant again, with calcium hydroxide or sodium hydroxide is after absorption agent carries out dechlorination, desulfurization and defluorinate to synthetic gas, by compressor (14) synthetic gas after purifying being sent into gas holder (15) stores, synthetic gas can be used as the town gas utilization, or uses as the unstripped gas of producing hydrogen, methyl alcohol and dme.
In the utility model, in order to utilize the gasification waste heat, waste heat boiler is set in system, comprise wherein a kind of of integral type waste heat boiler, flue type residual heat boiler or two kinds, the integral type waste heat boiler is arranged in the vapourizing furnace (2), and the flue type residual heat boiler is arranged between the outer synthetic gas transport pipe of stove.When the flue type residual heat boiler is set in the system, waste heat boiler (6) is arranged between vapourizing furnace (2) and the dedusting/treating plant, the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (601) of waste heat boiler (6), and the syngas outlet of waste heat boiler (602) is connected to synthetic gas import (1101) or (1204) of dedusting/treating plant.
In the utility model,, air preheater is set in system in vapourizing furnace (2) for hot air source being provided to air dryer (1) and hot vaporized chemical or combustion air being provided.When in system, air preheater being set, air preheater (9) is arranged between vapourizing furnace (2) and the dedusting/treating plant, the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (901) of air preheater (9), and the syngas outlet (903) of air preheater (9) is connected to synthetic gas import (1101) or (1204) of dedusting/treating plant; Normal temperature air enters into the interior heat pipe of air preheater (9) by cold wind import (904), heat pipe has hot-blast outlet (902) to pick out, the hot-blast outlet (902) of air preheater (9) is connected to the air outlet (103) of air dryer (1), the suction opening (105) of air dryer (1) is connected to the air suction inlet of induced draft fan (4), and the air outlet of induced draft fan (4) is connected to deodorization cleaner (5).
In the utility model, when waste heat boiler (6) and air preheater (9) are set between vapourizing furnace (2) and dedusting/treating plant simultaneously, the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (601) of waste heat boiler (6), the syngas outlet (602) of waste heat boiler (6) is connected to the synthetic gas import (901) of air preheater (9), and the syngas outlet (903) of air preheater (9) is connected to synthetic gas import (1101) or (1204) of dedusting/treating plant.
The utility model also is provided with quencher (10) in system, during the equipment operation, the high-temperature synthesis gas that vapourizing furnace generates is cooled to 800 ℃ by waste heat boiler and air preheater earlier, and then by below the quencher fast cooling to 200 ℃, regenerates Dioxins to prevent chlorinated organics.Be provided with position and the mode of connection of quencher (10) are following wherein a kind of:
C. when quencher (10) is arranged between vapourizing furnace (2) and wet cleaner (12) or the sack cleaner (12b), the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the high-temperature synthesis gas import (1004) of quencher (10), and the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1204) of wet cleaner (12) or sack cleaner (12b) by bleed blower fan (13);
D. when quencher (10) is arranged between vapourizing furnace (2) and the tornado dust collector (11), the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the high-temperature synthesis gas import (1004) of quencher (10), the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1101) of tornado dust collector (11), and the syngas outlet (1102) of tornado dust collector (11) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13);
E. when quencher (10) is arranged between waste heat boiler (6) and wet cleaner (12) or the sack cleaner (12b), the syngas outlet (602) of waste heat boiler (6) is connected to the high-temperature synthesis gas import (1004) of quencher (10), and the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1204) of wet cleaner (12) or sack cleaner (12b) by bleed blower fan (13);
F. when quencher (10) is arranged between waste heat boiler (6) and the tornado dust collector (11), the syngas outlet (602) of waste heat boiler (6) is connected to the high-temperature synthesis gas import (1004) of quencher (10), the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1101) of tornado dust collector (11), and the syngas outlet (1102) of tornado dust collector (11) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13);
G. when quencher (10) is arranged between air preheater (9) and wet cleaner (12) or the sack cleaner (12b), the syngas outlet (903) of air preheater (9) is connected to the high-temperature synthesis gas import (1004) of quencher (10), and the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1204) of wet cleaner (12) or sack cleaner (12b) by bleed blower fan (13);
H. when quencher (10) is arranged between air preheater (9) and the tornado dust collector (11), the syngas outlet (903) of air preheater (9) is connected to the high-temperature synthesis gas import (1004) of quencher (10), the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1101) of tornado dust collector (11), and the syngas outlet (1102) of tornado dust collector (11) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13).
The gasification system of another kind of rubbish of the present utility model, organic waste, it is characterized in that substituting air dryer (1) with feeding screw (37) sends into vapourizing furnace to garbage fuel, the opening for feed of vapourizing furnace (201) is on the side wall on baking zone (2-VI) top, and the discharge port of feeding screw (37) stretches in the vapourizing furnace from the opening for feed (201) of vapourizing furnace (2).
In the said system, receive the waste heat of vapourizing furnace back and forth, produce hot water and steam by waste heat boiler and quencher, the hot water of mini-system production can be made commodity selling, the steam that large scale system is produced can be used for generating, and institute generates electricity can be for the system device use, and electric weight more than needed is incorporated national grid into.
A kind of rubbish of the present utility model, the equipment for gasification of organic waste, it is characterized in that vapourizing furnace is a gas phase cycle gasification stove, baking zone (2-VI) is set in the body of heater, pyrolysis zone (2-V), gasification one district (2-IV), gasification two districts (2-II), burnt zone (2-III) and accumulation of heat chamber (2-I), baking zone (2-VI), pyrolysis zone (2-V), gasification one district (2-IV), gasifying, two districts (2-II) are adjacent successively with burnt zone (2-III) to communicate, wherein: baking zone (2-VI), pyrolysis zone (2-V) and gasification one district (2-IV) are in same revolution burner hearth, baking zone (2-VI) is on top, being pyrolysis zone (2-V) below the baking zone (2-VI), is gasification one district (2-IV) below the pyrolysis zone (2-V); Gasification one district (2-IV), gasification two districts (2-II) and the setting of burnt zone (2-III) transverse inclination, gasification one district (2-IV) is in the upstream, the downstream in gasification one district (2-IV) is gasification two districts (2-II), the downstream in gasification two districts (2-II) is burnt zone (2-III), and the downstream of burnt zone (2-III) is slag-drip opening (211); The below of gasification one district (2-IV), gasification two districts (2-II) and burnt zone (2-III) is provided with air distribution plate (214) or step board (224); Accumulation of heat chamber (2-I) and neighbouring the communicating in gasification two districts (2-II), accumulation of heat chamber (2-I) is in the top in gasification two districts (2-II), accumulation of heat chamber (2-I) is a labyrinth formation, accumulation of heat chamber (2-I) is made of the interior space that zigzag accumulation of heat furnace wall (206), (207) and lateral accumulation of heat furnace wall (206b) surround, wherein, accumulation of heat furnace wall (207) is all the partition wall between accumulation of heat chamber (2I) and pyrolysis zone (2V) the place burner hearth.The main function in accumulation of heat chamber (2-I) is to utilize accumulation of heat furnace wall (206), (207) and (206b) hold storage heat energy and prolong the high-temperature gasification stroke, institute's accumulation of heat can be except that the hot environment in keeping the accumulation of heat chamber, also by accumulation of heat furnace wall (207) to the gasification one district (2-IV), pyrolysis zone (2-V) and baking zone (2-VI) radiant heat energy, the part heat is provided for the heat absorption of garbage fuel oven dry, pyrolysis and gasification is required; As the operation passage of synthetic gas in the stove, high-temperature synthesis gas stores to a part of thermal energy transfer the accumulation of heat furnace wall by the accumulation of heat chamber time simultaneously in accumulation of heat chamber (2-I); Opening for feed (201) is arranged on the top of baking zone (2-VI) or the top side wall; The top of baking zone (2-VI) has gas phase loop exit (237) to pick out; The air compartment of the downstream of burnt zone (2-III) or the below, two districts (2-II) of gasifying has gas phase circulation input interface (221) to insert; There is synthetic gas output interface (203) to pick out on the top furnace wall in accumulation of heat chamber (2-I).The outer gas phase circulation loop of the stove of vapourizing furnace is made of recirculation blower (228) and circulation airduct (229), is connected between gas phase loop exit (237) and the gas phase circulation input interface (221) after circulation airduct (229) and recirculation blower (228) serial connection.
In the utility model, when one district of the gasification in vapourizing furnace (2-IV), when the below of gasification two districts (2-II) and burnt zone (2-III) is provided with air distribution plate (214), air distribution plate autopneumatolysis one district (2-IV) tilts to slag-drip opening (211) direction, the angular range that tilts is α=15~45 °, preferred angle of inclination is α=25~30 °, there are air compartment (215) and (217) in the below of air distribution plate (214), wherein, the corresponding below of air compartment (215) at burnt zone (2-III), the corresponding below of air compartment (217) in gasification one district (2-IV) and gasification two districts (2-II), air compartment (215) has combustion air input interface (216) to insert, and air compartment (217) has vaporized chemical input interface (218) to insert; Or, there are air compartment (215), (217) and (219) in the below of air distribution plate (214), wherein, the corresponding below of air compartment (215) at burnt zone (2-III), air compartment (217) is corresponding to the below in gasification one district (2-IV) and the part below gasification two districts (2-II), the corresponding part of air compartment (219) in below, gasification two districts (2-II), air compartment (215) has combustion air input interface (216) to insert, air compartment (217) has vaporized chemical input interface (218) to insert, and air compartment (219) has gas phase circulation input interface (221) to insert.
In the utility model, when the below of one district of the gasification in vapourizing furnace (2-IV), gasification two districts (2-II) and burnt zone (2-III) is provided with step board (224), step board (224) autopneumatolysis one district (2-IV) reduces in multistage step therein mode to burnt zone (2-III) direction, and cascaded surface also tilts to burnt zone (2-III) direction; The installing port that plasma torch (210) are arranged on the step board (224), many mouthfuls of settings of the many rows of plasma torch (210); Or, installing port and gas phase circulation input unit that plasma torch (210) is arranged on step board (224), wherein, many mouthfuls of settings of the many rows of plasma torch (210), gas phase circulation input unit is made of ventilation terminal (226), nozzle (225) and gas phase circulation input interface (221), many mouthfuls of single settings of nozzle (225); Simultaneously, the vaporized chemical jetting device is installed on the side wall in gasification one district (2-IV), the vaporized chemical jetting device is made of ventilation terminal (232) and nozzle (230), and nozzle (230) is more than one at least one, and vaporized chemical input interface (218) is arranged on the ventilation terminal (232).
During the operation of gas phase cycle gasification furnace apparatus, garbage fuel is sent in the stove from the opening for feed (201) of vapourizing furnace, in the type of furnace of not using plasma torch, simultaneously air, oxygen, wherein a kind of of water vapor or two kinds are sent into gasification zone in the stove as vaporized chemical, combustion air or oxygen are sent into burnt zone in the stove, the service temperature of control baking zone (2-VI) is between 120~150 ℃, the service temperature of pyrolysis zone (2-V) is between 300~600 ℃, the service temperature in gasification one district (2-IV) is between 600~1000 ℃, the service temperature in gasification two districts (2-II) is between 1000~1300 ℃, the service temperature of burnt zone (2-III) is between 1200 ± 50 ℃, and the working pressure of baking zone (2-VI) is normal pressure or negative pressure 20~30Pa.Garbage fuel moves from top to bottom according to own wt in stove, (2-VI) dries at baking zone, (2-V) carries out pyrolysis in pyrolysis zone, pyrogenous origin fixed carbon carries out gasification reaction in gasification one district (2-IV) and gasification two districts (2-II) with vaporized chemical, carbon residue burns at burnt zone (2-III), and the lime-ash that burns enters the hydrolock slag bath from slag-drip opening (211).In the said process: the steam state thing that generates at baking zone (2-VI) is mainly water vapor; The gaseous state thing that generates in pyrolysis zone (2-V) mainly contains hydrogen, carbon monoxide, carbonic acid gas, methane, low molecular hydrocarbon, tar and coal smoke; It under the minor amounts of oxygen existence is in the anaerobic environment that gasification one district (2-IV) and two districts (2-II) of gasifying are operated in, principal reaction is oxidizing reaction and reduction reaction, when air or oxygen is sent into gasification one district (2-IV) and gasification two districts (2-II) as vaporized chemical, oxygen and rubbish charcoal carry out oxidizing reaction, generate carbonic acid gas and emit heat, carbonic acid gas is met the rubbish charcoal and is carried out reduction reaction again, generates carbon monoxide and absorbs heat; When water vapor was sent into red-hot gasification one district (2-IV) and gasification two districts (2-II) as vaporized chemical, water vapor and rubbish charcoal carried out water-gas reaction, generate carbon monoxide and hydrogen and absorb heat; Burnt zone (2-III) is operated under the excess oxygen, competent combustion air or oxygen are sent into the burnt zone in the stove, carbon residue carries out oxidizing reaction under excess oxygen, until burning, generate gaseous state thing carbonic acid gas and solid lime-ash, carbonic acid gas is introduced gasification two districts (2-II) and is reduced into carbon monoxide by the rubbish charcoal, and the solid lime-ash enters the hydrolock slag bath by slag-drip opening (211); The gaseous state thing that generates in gasification one district (2-IV) is under the graviational interaction of recirculation blower (228), gap and garbage fuel antikinesis by garbage fuel, the gaseous state thing offers the part heat of gasification one district (2-IV), gasification two districts (2-II) and the generation of burnt zone (2-III) oxidizing reaction gasification, pyrolysis and the baking needed of garbage fuel simultaneously as thermophore in the mode of transmission of heat by convection; In gasification one district (2-IV), pyrolysis zone (2-V) and baking zone (2-VI) generate gas (vapour) attitude mixture, comprise tar, coal smoke (carbon particle) and water vapor, drawn from the gas phase loop exit (237) on vapourizing furnace top, gasification two districts (2-II) and the burnt zone (2-III) that turn back to the stove bottom by outer circulation airduct (229) of stove and recirculation blower (228), carry out cycle gasification, wherein, tar in the gaseous mixture carries out cracking in the hot environment more than 1000 ℃, generate carbon molecule and hydrogen, the carbon molecule generates carbon monoxide and hydrogen with steam reaction again, perhaps carbon molecule and water molecules react, generate carbon monoxide and hydrogen, water vapor in the gaseous mixture and red-hot rubbish charcoal reaction generate carbon monoxide and hydrogen, coal smoke in the gaseous mixture and water vapor generation water-gas reaction generate carbon monoxide and hydrogen; Dioxins in the gaseous state thing is effectively disintegrated in 1000~1300 ℃ of high temperature of gasification two districts (2-II) and burnt zone (2-III).During the equipment operation, the control of working pressure and service temperature realizes by ratio, combustion air air quantity, the internal circulating load of circulation gaseous state thing and the amount of drawing of synthetic gas of oxygen and water vapor in adjusting input speed, the vaporized chemical in the vapourizing furnace.
Above-mentioned gas phase cycle gasification furnace apparatus when using the type of furnace of plasma torch, is sent into plasma torch (210) to water vapor and is heated to more than 3100 ℃, makes water molecules be decomposed into oxygen, hydrogen and generation activity chemistry thing H
2O
*, spray into gasification one district (2-IV), gasification two districts (2-II) and burnt zone (2-III) in the vapourizing furnace then, carry out gasification reaction with the rubbish charcoal and generate carbon monoxide and hydrogen, and the rubbish charcoal is burnt.In the type of furnace of using plasma torch, it is combustion-supporting not need to send into air or oxygen to gasify two districts (2-II) and burnt zone (2-III), therefore, the synthetic gas quality better of producing, the calorific value height, pollutent is few, helps the back level and handles, and the synthetic gas of production can be used as the unstripped gas of producing hydrogen, methyl alcohol or dme and uses.In this type of furnace, on gasification one district (2-IV) side wall ventilation terminal (232) is set, air or oxygen is sent into ventilation terminal (232) as vaporized chemical by input interface (218), sprays into gasification one district (2-IV) by nozzle (230).When spraying into gasification one district (2-IV) with calcium oxide replacement vaporized chemical, utilize the thermopositive reaction of calcium oxide absorbing carbon dioxide that heat is provided in vapourizing furnace, the gasification of realization anaerobic, improve the calorific value of synthetic gas, simultaneously, also double as dechlorination of gasification calcium/sweetening agent drops in the vapourizing furnace, and contaminant restraining generates, can simplify the back level and handle, further improve the quality of synthetic gas.
The beneficial effects of the utility model are: the domestic refuse of high-moisture by air-dry processing after, improve the low heat value of garbage fuel, reduce the energy waste in the vapourizing furnace; Employing is provided with the technical measures in accumulation of heat chamber in gas phase cycle gasification stove, help improving the vaporization rate and the quality of garbage fuel, effectively disintegrates the violent in toxicity Dioxins simultaneously and eliminates tar, reduces the pollutent in the synthetic gas, helps back level purifying treatment.The utility model is converted into clean energy to rubbish, organic waste, turns waste into wealth, and has not only eliminated the pollution of rubbish, and can alleviate the energy-intensive situation.
Description of drawings
The utility model provides following accompanying drawing to be further described, but each accompanying drawing and following embodiment all do not constitute restriction of the present utility model:
Fig. 1 is a kind of gasification system figure that adopts air to make the processing domestic refuse of vaporized chemical of the present utility model.
Fig. 2 is a kind of gasification system figure that adopts oxygen to make the processing domestic refuse of vaporized chemical of the present utility model.
Fig. 3 is the gasification system figure of the processing domestic refuse of a kind of configuring plasma spray gun of the present utility model.
Fig. 4 is the gasification system figure of the processing domestic refuse of another kind of configuring plasma spray gun of the present utility model.
Fig. 5 is the rubbish of a kind of configuring plasma spray gun of the present utility model and calcium oxide cooperation processing, the gasification system figure of organic waste.
Fig. 6 is the treating refuse of a kind of configuring plasma spray gun of the present utility model, the gasification system figure of organic waste.
Fig. 7 is the gas phase cycle gasification furnace apparatus structure iron of a kind for the treatment of refuse of the present utility model, organic waste.
Fig. 8 is the A-A sectional view of Fig. 7.
Fig. 9 is the gas phase cycle gasification furnace apparatus structure iron of another treating refuse of the present utility model, organic waste.
Figure 10 is the treating refuse of a kind of configuring plasma spray gun of the present utility model, the gas phase cycle gasification furnace apparatus structure iron of organic waste.
Figure 11 is the treating refuse of another kind of configuring plasma spray gun of the present utility model, the gas phase cycle gasification furnace apparatus structure iron of organic waste.
Figure 12 is the treating refuse of another configuring plasma spray gun of the present utility model, the gas phase cycle gasification furnace apparatus structure iron of organic waste.
Among the figure: 1. air dryer, 2. vapourizing furnace, 3. segregaion valve, 4. induced draft fan, 5. deodorization cleaner, 6. waste heat boiler, 7. water tank, 8. water circulating pump, 9. air preheater, 10. quencher, 11. tornado dust collector, 12. wet cleaner, 12b. sack cleaner, 13. bleed blower fan, 14. compressor, 15. gas holder, 16. cooling towers, 17. water coolant topping-up pumps, 18. cooling/washings backflow transferpump, 19. hydrocyclone, 20. sump pumps, 21. absorption agent transferpumps, 22. absorption liquid buffer tank, 23. absorption liquid replenishes the storehouse, 24. gas blowers, 25. hydrolock slag baths, 26. controlling plasma power supply, 27. the oxygenerator group, 28. gas blowers, 29. dry powder absorption agent storehouses, 30. wind-force feed appliance, 31. the absorption agent revert pipe, 32. calcium oxide regeneratory furnaces, 33. transfer valves, 34. transfer valve, 35. gas-solid separator, 36. gas-solid separators, 37. feeding screws, 38. segregaion valve, 39. the rubbish hopper, 101. wheel boxes, 102. rubbish hoppers, 103. air outlet, 104. spiral conveyer, 105. suction openings, the discharge port of 106. air dryers, 201. the opening for feed of vapourizing furnace, 202. access hole, 203. synthetic gas output interfaces, 204. shells, 205. insulating, 206. the accumulation of heat furnace wall, the lateral accumulation of heat furnace wall of 206b., 207. accumulation of heat furnace walls, 208. temperature sensor, 209. visor, 210. plasma torchs, 211. slag-drip openings, 212. igniting/access door, 213. blast cap, 214. air distribution plates, 215. air compartments, 216. combustion air input interface, 217. air compartment, 218. vaporized chemicals or calcium oxide input interface, 219. air compartments, 220. ash removing hole, 221. gas phase circulation input interface, 224. step boards, 225. nozzles, 226. ventilation terminal, 227. pipe connecting, 228. recirculation blowers, 229. circulation airducts, 230. nozzle, 232. ventilation terminal, 233. temperature sensors, the fire-resistant furnace wall of 234. revolutions, 235. temperature sensor, 236. temperature sensor, 237. gas phase loop exits, 238. explosion traps, 601. the synthetic gas import of waste heat boiler, 602. the syngas outlet of waste heat boiler, the circulating water intake of 701. water tanks, the circulating water outlet of 702. water tanks, 901. the synthetic gas import of air preheater, 902. hot-blast outlet, the syngas outlet of 903. air preheaters, 904. cold wind imports, 905. hot-blast outlet, 906. the cold wind import, 1001. circulating water intakes, the syngas outlet of 1002. coolings, 1003. circulating water outlet, 1004. the high-temperature synthesis gas import, the synthetic gas import of 1101. dust-ladens, 1102. dust separating syngas outlet, 1201. the syngas outlet that purifies, 1202. the separator, 1203. absorption agent spray thrower interfaces, 1204. synthetic gas imports, 1205. absorption agent bypass outlet, 1206. the import of cooling/washings, 1207. clear water backflow imports, 1208. cooling/washing composition bypass outlets, 1209. sewage outlet, 1601. cooling water outlet, 1602. spray thrower interfaces, 1603. moisturizing interfaces, 1901. clear water output, 1902. the sewage import, 1903. spissated sewage outlet, the outlet of 2201. absorption liquids, 2202. absorption liquid backflow import, 2301. absorption liquid replenishes storehouse outlet, 2601. leads, 2701. oxygen output interfaces, 3201. lime carbonate input interface, 3202. the calcium oxide mixture outlet, 2-I. accumulation of heat chamber, 2-II. two districts of gasifying, 2-III. burnt zone, the district 2-IV. gasify, 2-V. pyrolysis zone, 2-VI. baking zone.
Embodiment
Among the embodiment shown in Figure 1, the gasification system of handling domestic refuse is mainly by air dryer (1), segregaion valve (3), vapourizing furnace (2), waste heat boiler (6), air preheater (9), quencher (10), tornado dust collector (11), wet cleaner (12), compressor (14), gas holder (15) and connecting tube are formed, wherein: air dryer (1) is horizontal cylinder device, cylindrical shell is provided with thermal insulation layer outward, the front portion of air dryer (1) is disposed with rubbish hopper (102) and air outlet (103), the rear portion is provided with suction opening (105), the discharge port of air dryer (106) is at afterbody, spiral conveyer (104) is set in the air dryer (1), be used for the rubbish material in the air dryer is carried after by forward direction, spiral conveyer (104) is driven by the outer wheel box (101) of device; Vapourizing furnace (2) is a gas phase cycle gasification stove, the opening for feed of vapourizing furnace (201) is at the top of stove, baking zone (2-VI), pyrolysis zone (2-V), gasification one district (2-IV), gasification two districts (2-II), burnt zone (2-III) and accumulation of heat chamber (2-I) are set in the stove, and stove is outer to constitute the gas phase circulation loop by circulation airduct (229) and recirculation blower (228).Mode of connection in the system between each equipment is: the discharge port (106) of air dryer (1) is connected to the opening for feed (201) of vapourizing furnace (2), the synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (601) of waste heat boiler (6), the syngas outlet (602) of waste heat boiler (6) is connected to the synthetic gas import (901) of air preheater (9), the syngas outlet (903) of air preheater (9) is connected to the high-temperature synthesis gas import (1004) of quencher (10), the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1101) of tornado dust collector (11), the syngas outlet (1102) of tornado dust collector (11) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13), the purification syngas outlet (1201) of wet cleaner (12) is connected to the suction opening of compressor (14), and the venting port of compressor (14) is connected to gas holder (15); The hot-blast outlet (902) of air preheater (9) is connected to the air outlet (103) of air dryer (1), the suction opening (105) of air dryer (1) is connected to the air suction inlet of induced draft fan (4), the air outlet of induced draft fan (4) is connected to the blast inlet of deodorization cleaner (5), and the purified gas air outlet row of deodorization cleaner (5) is to atmosphere; The air outlet of gas blower (24) is connected to the cold wind import (906) of air preheater (9), and the hot-blast outlet (905) of air preheater (9) is connected to combustion air input interface (216) and vaporized chemical input interface (218) by damper respectively; The circulating water outlet (1003) of quencher (10) is connected to the circulating water intake (701) of water tank, the circulating water outlet of water tank (702) is connected to the water sucking mouth of water circulating pump (8), and the water outlet of water circulating pump (8) is connected to the circulating water intake (1001) of quencher (10); The absorption agent bypass outlet (1205) of wet cleaner (12) is connected to the water sucking mouth of absorption agent transferpump (21), the water outlet of absorption agent transferpump (21) is connected to the absorption agent spray thrower interface (1203) of wet cleaner (12), the sewage outlet (1209) of wet cleaner (12) is connected to the water sucking mouth of sump pump (20), the water outlet of sump pump (20) is connected to the sewage import (1902) of hydrocyclone (19), and the clear water output (1901) of hydrocyclone (19) is connected to the clear water backflow import (1207) of wet cleaner (12); The spissated sewage outlet of hydrocyclone (19) (1903) is connected to Sewage treatment systems.When the system of present embodiment moves, the fragmentation of process Bulky Waste, sorting is removed the organic solid waste of inorganics and is sent in the air dryer (1), sending into air dryer by the air outlet (103) of air dryer (1) through 120~180 ° hot blast of air preheater (9) heating, hot blast is drawn by the suction opening (105) of air dryer (1) after passing the interior waste layer of air dryer (1), utilize the mobile hot blast to carry out air-dry to garbage fuel, remove the moisture in the garbage fuel, garbage fuel is 1~3 hour by the residence time that water ratio does not coexist in the air dryer (1), temperature in the control air dryer (1) is 70~110 ℃, and moisture contained in the garbage fuel is reduced in 15%; Garbage fuel after air-dry is sent in the gas phase cycle gasification stove (2) and is carried out gasification process, and the residence time of garbage fuel in vapourizing furnace is 1~3 hour; Fire with oligosaprobic biomass fuel during first stove, igniting is operated from the igniting/access door (212) of vapourizing furnace (2), utilize the burning heat release of stove endogenous substance fuel that the burner hearth in the vapourizing furnace is carried out pre-heating temperature elevation, the service temperature of control baking zone (2-VI) is between 120~150 ℃, the service temperature of pyrolysis zone (2-V) is between 300~600 ℃, the service temperature in gasification one district (2-IV) is between 600~1000 ℃, the service temperature in gasification two districts (2-II) is between 1000~1300 ℃, the service temperature of burnt zone (2-III) is between 1200 ± 50 ℃, the working pressure of baking zone (2-VI) is normal pressure or negative pressure 20~30Pa, and the control of working pressure and service temperature is by regulating input speed in the stove, the ratio of oxygen and water vapor in the vaporized chemical, the combustion air air quantity, the internal circulating load of circulation gaseous state thing and the amount of drawing of synthetic gas realize; Garbage fuel moves from top to bottom according to own wt in stove, (2-VI) dries at baking zone, (2-V) carries out pyrolysis in pyrolysis zone, pyrogenous origin fixed carbon carries out gasification reaction in gasification one district (2-IV) and gasification two districts (2-II), carbon residue burns at burnt zone (2-III), the lime-ash that burns enters the hydrolock slag bath from slag-drip opening (211), and lime-ash is as producing building materials or fertilizer utilization; The gaseous state thing that generates in gasification one district (2-IV) is under the graviational interaction of recirculation blower (228), gap and garbage fuel antikinesis by garbage fuel, the gaseous state thing offers the part heat of gasification one district (2-IV), gasification two districts (2-II) and the generation of burnt zone (2-III) oxidizing reaction gasification, pyrolysis and the baking needed of garbage fuel simultaneously as thermophore in the mode of transmission of heat by convection; In gasification one district (2-IV), gas (vapour) the attitude mixture that pyrolysis zone (2-V) and baking zone (2-VI) generate, comprise tar, coal smoke (carbon particle) and water vapor, drawn from the gas phase loop exit (237) on vapourizing furnace top, gasification two districts (2-II) and the burnt zone (2-III) that turn back to the stove bottom by outer circulation airduct (229) of stove and recirculation blower (228), carry out cycle gasification, generating carbon monoxide and hydrogen is the synthetic gas of main component, simultaneously, the Dioxins in the gaseous state thing, furans is effectively disintegrated in 1000~1300 ℃ of high temperature of gasification two districts (2-II) and burnt zone (2-III); Generating synthetic gas in the vapourizing furnace (2) draws from the synthetic gas output interface (203) of vapourizing furnace, behind waste heat boiler (6) recovery Btu utilization, by air preheater (9), utilize high-temperature synthesis gas to come the wind regime of indirect heating air dryer and the combustion air of heating and gasifying stove again; The high-temperature synthesis gas more than 1000 ℃ that vapourizing furnace generates is cooled to 800 ℃ by waste heat boiler and air preheater, and then by below the quencher fast cooling to 200 ℃, regenerates Dioxins to prevent chlorinated organics; Synthetic gas is again by being handled by the dedusting/treating plant of tornado dust collector (11) and wet cleaner (12) combination after cooling is handled, with calcium hydroxide or sodium hydroxide is that absorption agent carries out dechlorination, desulfurization and defluorinate to synthetic gas, synthetic gas after the purification is removed foam by the separator (1202) on wet cleaner (12) top again, by compressor (14) synthetic gas after purifying is sent into gas holder (15) and stores.Present embodiment is made vaporized chemical with air, and the synthetic gas of production can be used as the town gas utilization, or after removing nitrogen and carbonic acid gas by tripping device again, uses as the unstripped gas of producing hydrogen, methyl alcohol and dme.In the present embodiment, excessive rubbish is sheared or fragmentation in advance, the size that makes soft rubbish is less than 50cm, and the size of hard rubbish is less than 10cm; The diameter of air dryer (1) and length ratio are 0.12~0.15, the diameter and the length ratio of gasification one district (2-IV) of vapourizing furnace (2), pyrolysis zone (2-V) and baking zone (2-VI) revolution furnace chamber of living in are 0.1~0.12, when the useful volume of air dryer (1) is 7m
3, vapourizing furnace (2) the useful volume of gasification one district (2-IV), pyrolysis zone (2-V) and baking zone (2-VI) revolution furnace chamber of living in be 5m
3The time, single stove daily handling ability conversion of system is 10~15 tons of crude wastes.In the present embodiment, receive the waste heat of vapourizing furnace back and forth by waste heat boiler and quencher, produce hot water and steam, the hot water of mini-system production can be made commodity selling, and the steam that large scale system is produced can be used for generating.
Among the embodiment shown in Figure 2, replace air in embodiment illustrated in fig. 1 with the on-the-spot oxygen of producing and offer vapourizing furnace (2) and make vaporized chemical.In the system of present embodiment, cancelled gas blower (24) equipment, increased oxygenerator group (27) and connecting tube thereof, the oxygen output interface (2701) of oxygenerator group (27) is connected to combustion air input interface (216) and vaporized chemical input interface (218) by damper respectively.The synthetic gas calorific value of present embodiment production is higher than the synthetic gas of production embodiment illustrated in fig. 1, can be used as the town gas utilization, or directly as using as the unstripped gas of producing hydrogen, methyl alcohol and dme.
Embodiment shown in Figure 3 is on Fig. 1 or basis embodiment illustrated in fig. 2, replaces air distribution plate (214) among Fig. 1 or Fig. 2 embodiment with step board (224).Controlling plasma power supply (26) and plasma torch (210) have been increased in the present embodiment, controlling plasma power supply (26) is connected to plasma torch (210) by lead (2601), and plasma torch (210) is configured on the step board (224) of gasification one district (2-IV) of vapourizing furnace (2), gasify two districts (2-II) and burnt zone (2-III); The ventilation terminal of vaporized chemical jetting device (232) is configured on the side wall in gasification one district (2-IV), have vaporized chemical input interface (218) to insert on the ventilation terminal (232), the oxygen output interface (2701) of oxygenerator group (27) is connected to vaporized chemical input interface (218).In the system of present embodiment, water vapor is sent into plasma torch (210) be heated to more than 3100 ℃, make water molecules be decomposed into oxygen, hydrogen and generation activity chemistry thing H
2O
*Spray into gasification one district (2-IV), gasification two districts (2-II) and burnt zone (2-III) in the vapourizing furnace then, carry out gasification reaction with the rubbish charcoal and generate carbon monoxide and hydrogen, and the rubbish charcoal burnt, simultaneously, spray into gasification one district (2-IV) as vaporized chemical by the nozzle on the ventilation terminal (232), carry out oxidizing reaction and emit heat with the rubbish charcoal with oxygen, offer gasification reaction, pyrolysis and baking needed in the stove, to reduce the power consumption of plasma torch.The synthetic gas quality of present embodiment production and calorific value all are higher than two embodiment.
Embodiment shown in Figure 4 is on basis embodiment illustrated in fig. 3, and wet cleaner (12) is set to multi-functional dedusting, cooling and treating plant.In the present embodiment, quencher (10) and tornado dust collector (11) equipment have been cancelled, increased cooling tower (16) and peripherals thereof, the syngas outlet of air preheater (903) is connected to the synthetic gas import (1204) of wet cleaner (12) by bleed blower fan (13).The mode of connection of cooling tower (16) and peripherals thereof is: the cooling of wet cleaner (12)/washing composition bypass outlet (1208) is connected to the water sucking mouth of cooling/washings backflow transferpump (18), the water outlet of cooling/washings backflow transferpump (18) is connected to the spray thrower interface (1602) of cooling tower (16), the cooling water outlet (1601) of cooling tower (16) is connected to the water sucking mouth of water coolant topping-up pump (17), the water outlet of water coolant topping-up pump (17) is connected to the cooling/washings import (1206) of wet cleaner (12), and the water that consumes during the cooling system operation mends cooling tower by moisturizing interface (1603).In the present embodiment, the bottom of wet cleaner (12) is a cooling/washing section, have chilling and dedusting function, the middle part is an absorber portion, spray at absorber portion by lime slurry or sodium hydroxide solution, remove muriate in the synthetic gas, sulfide and fluorochemical, epimere is the foam removal section, have the function of removing foam in the synthetic gas, multi-functional wet method cleaner also has the removal effect to heavy metal and Dioxins.
Among the embodiment shown in Figure 5, the gasification system of the domestic refuse that configuring plasma spray gun and calcium oxide cooperation are handled is mainly by air dryer (1), segregaion valve (3), vapourizing furnace (2), controlling plasma power supply (26), calcium oxide regeneratory furnace (32), gas-solid separator (35) (36), waste heat boiler (6), quencher (10), sack cleaner (12b), bleed blower fan (13), compressor (14), gas holder (15) and connecting tube are formed, and the mode of connection between each equipment is: the discharge port (106) of air dryer (1) is connected to the opening for feed (201) of vapourizing furnace (2); The gas phase loop exit (237) of vapourizing furnace (2) is connected to the mixture intake of gas-solid separator (35), the gaseous state thing outlet of gas-solid separator (35) is connected to the air suction inlet of recirculation blower (228) by circulation airduct (229), the air outlet of recirculation blower (228) is connected to the gas phase circulation input interface (221) of vapourizing furnace (2) by pipe connecting (227), gas phase circulation input interface (221) is connected on the ventilation terminal (226), ventilation terminal (226) is arranged on the step board (224) of vapourizing furnace (2), and many nozzles on the ventilation terminal (226) point to gasification two districts (2-II) of vapourizing furnace (2); The solids dipleg of gas-solid separator (35) is connected to transfer valve (33), the discharge port of transfer valve (33) is connected to the lime carbonate input interface (3201) of calcium oxide regeneratory furnace (32), the calcium oxide mixture outlet (3202) of calcium oxide regeneratory furnace (32) is connected to the mixture intake of gas-solid separator (36), the solids dipleg of gas-solid separator (36) is connected to transfer valve (34), the discharge port of transfer valve (34) is connected to the calcium oxide input interface (218) on the ventilation terminal (232), ventilation terminal (232) is arranged on gasification one district (2-IV) side wall of vapourizing furnace (2), and many nozzles on the ventilation terminal (232) point to gasification one district (2-IV) in the vapourizing furnace (2); The gaseous state thing outlet of gas-solid separator (36) is connected to the air outlet (103) of air dryer (1), and the suction opening (105) of air dryer (1) is connected to the air suction inlet of induced draft fan (4), and the air outlet of induced draft fan (4) is connected to deodorization cleaner (5); The synthetic gas output interface (203) of vapourizing furnace (2) is connected to the synthetic gas import (601) of waste heat boiler (6), the syngas outlet (602) of waste heat boiler (6) is connected to the high-temperature synthesis gas import (1004) of quencher (10), the syngas outlet (1002) of quencher (10) cooling is connected to the synthetic gas import (1204) of sack cleaner (12b) by bleed blower fan (13), the purification syngas outlet (1201) of sack cleaner (12b) is connected to the suction opening of compressor (14), and the venting port of compressor (14) is connected to gas holder (15); The absorption agent revert pipe (31) of the discharge port in the air outlet of gas blower (28), dry powder absorption agent storehouse (29) and sack cleaner (12b) is connected to wind-force feed appliance (30), and wind-force feed appliance (30) is connected on the pipeline between bleed blower fan (13) and the sack cleaner (12b); The circulating water outlet (1003) of quencher (10) is connected to the circulating water intake (701) of water tank, and the circulating water outlet of water tank (702) is connected to the circulating water intake (1001) of quencher (10) by water circulating pump (8).In the present embodiment, adopt the calcium oxide cooperation plasma torch that rubbish, organic waste are carried out gasification process, utilize the thermopositive reaction of calcium oxide absorbing carbon dioxide in vapourizing furnace, to provide gasification required heat, to reduce the power consumption of plasma torch, do not use oxygen or air to make vaporized chemical, realize the anaerobic gasification in the stove, the synthetic gas quality better of production, calorific value height, and the pollutant load in the synthetic gas is extremely low, and back level purifying treatment is carried out easily.The process that the calcium oxide cooperation plasma torch carries out gasification process rubbish is: after vapourizing furnace (2) operation is normal, existing carbonic acid gas exists in the vapourizing furnace (2), the calcium oxide powder sprays into gasification one district (2-IV) by the nozzle on the ventilation terminal (232), carry out carbonation reaction with carbonic acid gas, calcium oxide absorbing carbon dioxide and generate lime carbonate is emitted heat simultaneously; The lime carbonate that the calcium oxide absorbing carbon dioxide generates mixes with gaseous state thing in the stove, being introduced in gas-solid separator (35) by the gas phase loop exit (237) of vapourizing furnace (2) separates, isolated lime carbonate powder is sent into calcium oxide regeneratory furnace (32) by transfer valve (33) and is carried out calcination processing, the incinerating temperature is controlled between 1000~1100 ℃, make the lime carbonate powder be decomposed into calcium oxide powder and carbon dioxide, calcium oxide powder and carbon dioxide are introduced gas-solid separator (36) to be separated, isolating calcium oxide powder is sent back to vapourizing furnace carry out recycle, isolating carbon dioxide is sent into the garbage fuel that air dryer (1) is used for drying up high-moisture.In this enforcement, the lime carbonate that the calcium oxide absorbing carbon dioxide generates in vapourizing furnace also can not recycle, the raw material of lime carbonate as production cement, at this moment, the calcium oxide regeneratory furnace (32) in the desirable sterilizing system, transfer valve (33) and (34), gas-solid separator (35) and (36) equipment.In the present embodiment, dry cleaning equipment is combined by sack cleaner (12b), gas blower (28), dry powder absorption agent storehouse (29), wind-force feed appliance (30), absorption agent revert pipe (31), adopt lime powder to remove muriate in the synthetic gas, sulfide and fluorochemical as absorption agent, Zuo Yong lime powder is not collected by sack cleaner (12b), recycle in the retrieval system.
Among the embodiment shown in Figure 6, import garbage fuel to vapourizing furnace (2) with the air dryer (1) that feeding screw (37) replaces in the embodiment shown in Figure 3.In the present embodiment, the opening for feed (201) of vapourizing furnace (2) is on the side wall on baking zone (2-VI) top, the discharge port of feeding screw (37) stretches in the vapourizing furnace (2) from opening for feed (201), segregaion valve (38) and rubbish hopper (39) are arranged on the feeding screw (37), and segregaion valve (38) is between rubbish hopper (39) and feeding screw (37).In the present embodiment, air preheater is not set, the syngas outlet (602) of waste heat boiler (6) is directly connected to the high-temperature synthesis gas import (1004) of quencher (10).
Among Fig. 7 and the embodiment shown in Figure 8, baking zone (2-VI), pyrolysis zone (2-V), gasification one district (2-IV), gasification two districts (2-II), burnt zone (2-III) and accumulation of heat chamber (2-I) are set in the body of heater of gas phase cycle gasification stove, baking zone (2-VI), pyrolysis zone (2-V) and gasification one district (2-IV) are in same revolution burner hearth, each regional coaxial upper and lower settings, baking zone (2-VI) is on top, being pyrolysis zone (2-V) below the baking zone (2-VI), is gasification one district (2-IV) below the pyrolysis zone (2-V); Gasification one district (2-IV), gasification two districts (2-II) and the setting of burnt zone (2-III) transverse inclination, adjacent successively communicating, the downstream of burnt zone (2-III) is slag-drip opening (211); Gasification one district (2-IV), the below of gasification two districts (2-II) and burnt zone (2-III) is provided with air distribution plate, air distribution plate (214) autopneumatolysis one district (2-IV) tilts to slag-drip opening (211) direction, the angular range that tilts is α=26 °, there is air compartment (215) below of air distribution plate (214), (217) and (219), wherein, the corresponding below of air compartment (215) at burnt zone (2-III), air compartment (217) is corresponding to the below in gasification one district (2-IV) and the part below gasification two districts (2-II), the corresponding part of air compartment (219) in below, gasification two districts (2-II), air compartment (215) has combustion air input interface (216) to insert, air compartment (217) has vaporized chemical input interface (218) to insert, and air compartment (219) has gas phase circulation input interface (221) to insert; Accumulation of heat chamber (2-I) and neighbouring the communicating in gasification two districts (2-II), accumulation of heat chamber (2-I) is in the top in gasification two districts (2-II), accumulation of heat chamber (2-I) is a labyrinth formation, accumulation of heat chamber (2-I) is made of the interior space that zigzag accumulation of heat furnace wall (206), (207) and lateral accumulation of heat furnace wall (206b) surround, accumulation of heat chamber (2-I) as the passage of synthetic gas, is provided with synthetic gas output interface (203) simultaneously on the accumulation of heat furnace wall (206) on top, accumulation of heat chamber (2-I); Be provided with at the top of baking zone (2-VI) on the side wall on opening for feed (201) and top gas phase loop exit (237) is set; Circulation airduct (229) and recirculation blower (228) constitute the outer gas phase circulation loop of stove of vapourizing furnace, circulation airduct (229) is connected between the air suction inlet of gas phase loop exit (237) and recirculation blower (228), and the air outlet of recirculation blower (228) is connected to gas phase circulation input interface (221).In the present embodiment, (206b) form by (207), insulating (205) and shell (204) by the fire-resistant furnace wall of revolution (234), accumulation of heat furnace wall (206) for the furnace wall of vapourizing furnace, the fire-resistant furnace wall of revolution (234), accumulation of heat furnace wall (206) (206b) (207) at internal layer, wherein, accumulation of heat furnace wall (207) is an internal partition wall, insulating (205) is in the centre of fire-resistant accumulation of heat furnace wall and shell (204), and fire-resistant furnace wall adopts the luminite cement refractory concrete to build in the stove.In the present embodiment, in gasification two districts (2-II) temperature sensor (208) and visor (209) are set, in gasification one district (2-IV) temperature sensor (233) is set, in pyrolysis zone (2-V) temperature sensor (235) is set, at baking zone (2-VI) temperature sensor (236) and explosion trap (238) are set, stove tail end igniting/access door (212) is set.During the equipment operation, garbage fuel is sent in the stove from the opening for feed (201) of vapourizing furnace, simultaneously air, oxygen, wherein a kind of of water vapor or two kinds are sent into gasification zone in the stove as vaporized chemical, combustion air or oxygen are sent into burnt zone in the stove, the service temperature of control baking zone (2-VI) is between 120~150 ℃, the service temperature of pyrolysis zone (2-V) is between 300~600 ℃, the service temperature in gasification one district (2-IV) is between 600~1000 ℃, the service temperature in gasification two districts (2-II) is between 1000~1300 ℃, the service temperature of burnt zone (2-III) is between 1200 ± 50 ℃, and the working pressure of baking zone (2-VI) is normal pressure or negative pressure 20~30Pa.Garbage fuel moves from top to bottom according to own wt in stove, (2-VI) dries at baking zone, (2-V) carries out pyrolysis in pyrolysis zone, pyrogenous origin fixed carbon carries out gasification reaction in gasification one district (2-IV) and gasification two districts (2-II), carbon residue burns at burnt zone (2-III), and the lime-ash that burns enters the hydrolock slag bath from slag-drip opening (211).The gaseous state thing that generates in gasification one district (2-IV) is under the graviational interaction of recirculation blower (228), gap and garbage fuel antikinesis by garbage fuel, the gaseous state thing offers the part heat of gasification one district (2-IV), gasification two districts (2-II) and the generation of burnt zone (2-III) oxidizing reaction gasification, pyrolysis and the baking needed of garbage fuel simultaneously as thermophore in the mode of transmission of heat by convection; In gasification one district (2-IV), pyrolysis zone (2-V) and baking zone (2-VI) generate gas (vapour) attitude mixture, comprise tar, coal smoke (carbon particle) and water vapor are drawn from the gas phase loop exit (237) on vapourizing furnace top, gasification two districts (2-II) and the burnt zone (2-III) that turn back to the stove bottom by outer circulation airduct (229) of stove and recirculation blower (228), carry out cycle gasification, generate carbon monoxide and hydrogen, disintegrate the violent in toxicity Dioxins simultaneously, furans, the tar of remnants in the gaseous state thing, coal smoke (carbon particle) and water vapor are proceeded gasification reaction in accumulation of heat chamber (2-I) holds the hot environment of storage.Present embodiment uses air or oxygen to be vaporized chemical, gasification one district (2-IV) and gasification two districts (2-II) are operated under the anoxia condition, burnt zone (2-III) is operated under the excess oxygen, pyrolysis zone (2-V) and baking zone (2-VI) are operated under the oxygen free condition, help obtaining high vaporization rate and carbon residue is burnt.In the said process, the control of working pressure and service temperature realizes by ratio, combustion air air quantity, the internal circulating load of circulation gaseous state thing and the amount of drawing of synthetic gas of oxygen and water vapor in adjusting input speed, the vaporized chemical in the stove.
Among the embodiment shown in Figure 9, with difference embodiment illustrated in fig. 7 be: the below of air distribution plate (214) only is provided with air compartment (215) and (217), wherein, the corresponding below of air compartment (215) at burnt zone (2-III), the corresponding below of air compartment (217) in gasification one district (2-IV) and gasification two districts (2-II), air compartment (215) has combustion air input interface (216) to insert, and air compartment (217) has vaporized chemical input interface (218) to insert; Gas phase circulation input interface (221) changes in the access of the top of slag-drip opening (211).
Among the embodiment shown in Figure 10, gas phase cycle gasification stove is mainly by opening for feed (201), gas phase loop exit (237), gas phase circulation input interface (221), recirculation blower (228), circulation airduct (229), vaporized chemical input interface (218), ventilation terminal (232), plasma torch (210), step board (224), synthetic gas output interface (203) and furnace wall are formed, wherein, furnace wall comprises accumulation of heat furnace wall (206) (206b) (207), the fire-resistant furnace wall of revolution (234), insulating (205) and shell (204), the coaxial from top to bottom baking zone (2-VI) that is provided with in the burner hearth that the fire-resistant furnace wall of revolution (234) constitutes, pyrolysis zone (2-V) and gasification one district (2-IV), horizontal side in gasification one district (2-IV) is provided with gasification two districts (2-II), horizontal side in gasification two districts (2-II) is provided with burnt zone (2-III), gasification one district (2-IV), gasifying, two districts (2-II) are adjacent successively with burnt zone (2-III) to communicate; Accumulation of heat chamber (2-I) is in the top in gasification two districts (2-II), the interior empty formation that accumulation of heat chamber (2-I) is gone along with sb. to guard him by indentation accumulation of heat furnace wall (206) (207) and accumulation of heat side wall (206b), accumulation of heat chamber (2-I) is simultaneously as the passage between gasification two districts (2-II) and the syngas outlet, in gasification one district (2-IV), the below of gasification two districts (2-II) and burnt zone (2-III) is provided with step board (224), step board (224) autopneumatolysis one district (2-IV) reduces in multistage step therein mode to burnt zone (2-III) direction, and cascaded surface also tilts to burnt zone (2-III) direction; Plasma torch (210) is set on step board (224), many mouthfuls of settings of the many rows of plasma torch (210), the tail end at burnt zone (2-III) inserts plasma torch (210) simultaneously; Opening for feed (201) is arranged on the top of baking zone (2-VI), gas phase loop exit (237) is arranged on the side wall on baking zone (2-VI) top, gas phase circulation input interface (221) is arranged on the vault of burnt zone (2-III), vaporized chemical input interface (218) is arranged on the ventilation terminal (232), ventilation terminal (232) is arranged on the side wall in gasification one district (2-IV), have nozzle (230) to point to interior gasification one district (2-IV) of stove on the ventilation terminal (232), synthetic gas output interface (203) is arranged on the accumulation of heat furnace wall (206) on top, accumulation of heat chamber (2-I).In the present embodiment, water vapor is sent into plasma torch (210) be heated to more than 3100 ℃, make water molecules be decomposed into oxygen, hydrogen and generation activity chemistry thing H
2O
*, spray into gasification one district (2-IV), gasification two districts (2-II) and burnt zone (2-III) in the vapourizing furnace then, carry out gasification reaction with the rubbish charcoal and generate carbon monoxide and hydrogen, and the rubbish charcoal is burnt.During the operation of present embodiment equipment, it is combustion-supporting not need to send into air or oxygen to gasify two districts (2-II) and burnt zone (2-III), the ventilation terminal (232) that on gasification one district (2-IV) side wall, is provided with, input media comprises wherein a kind of of oxygen and calcium oxide powder, when input media is oxygen, oxygen just uses as vaporized chemical, and when input media was the calcium oxide powder, the calcium oxide powder used as the heat producing element in the vapourizing furnace and dechlorination/sweetening agent.The synthetic gas quality better that present embodiment is produced, the calorific value height, pollutent is few, helps the back level and handles, and the synthetic gas of production can be used as the unstripped gas of producing hydrogen, methyl alcohol or dme and uses.In the present embodiment, the service temperature of burnt zone (2-III) is controlled between 1200~1600 ℃, when the temperature of burnt zone (2-III) surpasses more than 1300 ℃, lime-ash just fusion is liquid, fall into the hydrolock slag bath, just become the vitreum state, can directly make building materials and use.
Among the embodiment shown in Figure 11, with the difference among Figure 10 embodiment be: the gas phase circulation input unit of vapourizing furnace is arranged on the following step board (224) in gasification two districts (2-II), plasma torch (210) and gas phase circulation input unit are set on step board (224), wherein, many mouthfuls of settings of the many rows of plasma torch (210), gas phase circulation input unit is made of ventilation terminal (226) and nozzle (225), many mouthfuls of single settings of nozzle (225), nozzle (225) points to gasification two districts (2-II) in the stove, and gas phase circulation input interface (221) is arranged on the ventilation terminal (226).
Among the embodiment shown in Figure 12, the opening for feed (201) that changes vapourizing furnace is on the side wall on baking zone (2-VI) top, the discharge port of feeding screw (37) is stretched in the vapourizing furnace by the opening for feed (201) of vapourizing furnace, during the equipment operation, the interior garbage fuel of rubbish hopper (39) enters feeding screw (37) by segregaion valve (38), is sent in the vapourizing furnace by feeding screw (37) again.