CN1912354A - Integral process and equipment of garbage fuel synthesis and burning generation - Google Patents
Integral process and equipment of garbage fuel synthesis and burning generation Download PDFInfo
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- CN1912354A CN1912354A CNA2006100531824A CN200610053182A CN1912354A CN 1912354 A CN1912354 A CN 1912354A CN A2006100531824 A CNA2006100531824 A CN A2006100531824A CN 200610053182 A CN200610053182 A CN 200610053182A CN 1912354 A CN1912354 A CN 1912354A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
An integral process of synthesizing garbage fuel and incinerating it to generate power includes preparing garbage made fuel by process of grinding, drying, magnetic selecting, modifying, mixing and pressing; sending prepared garbage made fuel into boiler to burn it for generating power; using boiler tail fume and steam of steam turbine in preparing course of garbage fuel to provide heat source being used in drying unit and modifying unit in preparing course of garbage fuel.
Description
Technical field
What the present invention relates to is synthetic and efficient burning electricity generation integral process of rubbish and equipment of a kind of garbage fuel.
Background technique
The high temperature incineration technology is a kind of effective ways of waste processing, particularly to calorific value than higher municipal waste, can be kept to through rubbish volume behind the high-temp combustion original below 1/5, kill pathogenic bacteria, simultaneously can reclaim heat energy heat supply and generating, therefore be adopted by a lot of countries.At present, direct burning mode is mainly adopted in domestic waste incineration, and promptly municipal waste directly drops into the boiler burning after simple pretreatment, and boiler is based on grate furnace, and part adopts fluidized bed boiler.But because generally the calorific value of municipal waste is about 1000kcal/kg, water content is about about 50% simultaneously, causes combustion efficiency low, and poor combustion stability, needs to add coal as combustion improver.Adopt waste incineration to add afterheat boiler electricity-generating system, its generating efficiency is generally less than 10%, pollutant load height such as the dioxin in burning back flue gas and the ash quarrel, heavy metal.In order to improve the combustion efficiency of boiler, reduce the thermal loss of incineration firing process, patent (patent No. ZL200420025023.X is arranged; ZL02160760.5; Application for a patent for invention number 02113866.4 etc.) proposed to adopt the high-temperature flue gas of firing chamber or high-temperature flue gas and Cryogenic air mix the back rubbish is fired before dry method.But adopt high-temperature flue gas that rubbish is carried out convection drying, the high-grade heat energy that has not only consumed, and the possibility of ignite blast is arranged.As after adopting high-temperature flue gas and Cryogenic air to mix rubbish is fired preceding drying, then the loss of high-grade flue gas heat energy is bigger.
If crude waste is passed through certain technique for pretreating, promptly pass through rubbish broken earlier; sort metal; drying and dehydrating; production technologies such as deodorizing and extrusion modling; make the so-called garbage derivatived fuel (Refuse Derived Fuel; be called for short RDF) of definite shape (as column; granular etc.); carry out combustion power generation again; because RDF is the fuel through the scientific matching artificial synthesis; have higher calorific capacity (being generally 3000-4000kcal/kg); compare; calorific value is more than 1-2 a times of the latter, and flameholding, can reduce the secondary pollutions such as dioxin that burning produces greatly with general garbage fuel.If but the heat energy that this production technology adopts fuel directly to burn to be produced is as the required thermal source of production technology, cost of production costliness.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existence, and a kind of energy utilization rate height that has is provided, the generating efficiency height, environmental pollution is low, the garbage fuel that operating cost is cheap synthetic and burning electricity generation integral process and equipment.
The objective of the invention is to finish by following technical solution: this technology is formed with the combustion power generation two procedures by garbage derivatived fuel is synthetic, wherein garbage derivatived fuel synthesizes and comprises at least once pulverizing, dry, magnetic separation, extrusion modling forms after modified mixing, and the garbage derivatived fuel that makes is sent into the boiler burning generating; The above garbage derivatived fuel (RDF) building-up process and RDF burning electricity generation process are the operating unit steps of two organic assembling of a continuous process.
Primary drying at least in the described garbage derivatived fuel synthesis procedure is a warm air drying.
Utilize the thermal source of the weary flue gas of garbage derivatived fuel burning boiler outlet in the described garbage derivatived fuel synthesis procedure as warm air drying.
Modified mixed processes in the described garbage derivatived fuel synthesis procedure is a steam heating.
Be to utilize steam generating to take out condensing turbine machine assembly air-exhausting or back pressure turbine group outlet steam heating thermal source in the described garbage derivatived fuel synthesis procedure as modified mixed processes; Taking of above measure improved the capacity usage ratio and the generating efficiency of RDF power generation system greatly.
Described garbage derivatived fuel synthesis procedure adopts rubbish → pulverizing → primary drying → magnetic separation → secondary pulverizing → secondary magnetic separation → three pulverizing → modified mixing → extrusion modling → redrying → RDF finished product → boiler burnings → steam generating.
It is that 200-350 ℃ weary flue gas is as drying source that the required hot blast of drying process in the described garbage derivatived fuel synthesis technology adopts the boiler economizer outlet temperature.
Drying in the described garbage derivatived fuel synthesis technology is handled through cyclone dust collector or other inertial dust separator ash disposal with flue gas.
Required heating steam is by taking out that the condensing turbine is bled or back pressure turbine group outlet temperature is that 130-200 ℃ steam is as thermal source in the modified mixed processes in the described garbage derivatived fuel synthesis technology.
A kind of garbage fuel synthesizes the equipment with burning electricity generation, it is synthetic and burning electricity generation integral process according to described garbage fuel, be furnished with boiler furnace, vapor superheater, steam generator, economizer, flue gas quenching apparatus, dust removal apparatus, also include by taking out condensing turbine steam or back pressure turbine unit, generator set, the power generating equipment that condenser, boiler feed water loop are formed.
Garbage derivatived fuel in the described refuse incineration and power generation process (RDF) burning electricity generation technology, the general circulating fluidized bed boiler that adopts, its combustion system capital equipment is made up of boiler furnace, vapor superheater, steam generator, economizer, flue gas quenching apparatus, dust removal apparatus, the capital equipment of its power generation system by take out condensing turbine steam or back pressure turbine unit, generator set, the boiler feed water loop is formed.The boiler burning room temperature is 870-900 ℃, and boiler vapor outlet port temperature is 400-500 ℃, pressure 50-100Mpa, and boiler economizer smoke outlet mean temperature is 275 ℃, and dust removal apparatus flue gas inlet temperature is 155-165 ℃, and smog discharge temperature is 150 ℃.
Compared with prior art, the invention has the advantages that: refuse incineration and power generation process of the present invention is formed with RDF burning electricity generation two-part by garbage derivatived fuel (RDF) is synthetic, wherein utilize the thermal source of the weary flue gas of boiler economizer outlet as RDF building-up process drying process, steam generating take out that the condensing turbine is bled or back pressure turbine group outlet steam as the heating thermal source of the modified mixing arrangement of RDF building-up process, thereby improved the capacity usage ratio and the generating efficiency of waste incineration and generating electricity system greatly.According to 1 kilogram of water content is 50% crude waste (calorific value 1000kcal/kg), make about 0.55 kilogram of garbage derivatived fuel (calorific value is about 3000kcal/kg) that water content is 5-10% earlier through described technology, combustion power generation again, its capacity usage ratio has improved 20-40%, generating efficiency can reach 30%, reduce CO2 emissions more than 20%, and can significantly reduce other environmental contaminants and must discharge, also saved operating cost greatly.
Description of drawings
Fig. 1 is a process flow diagram of the present invention
Embodiment
Below in conjunction with drawings and Examples the present invention is further introduced.Garbage fuel of the present invention is synthetic and the burning electricity generation integral process is synthesized by garbage derivatived fuel and the combustion power generation two procedures is formed, wherein garbage derivatived fuel synthesizes and comprises at least once pulverizing, dry, magnetic separation, extrusion modling forms after modified mixing, and the garbage derivatived fuel that makes is sent into the boiler burning generating; The above garbage derivatived fuel (RDF) building-up process and RDF burning electricity generation process are the operating unit steps of two organic assembling of a continuous process.
Primary drying at least in the described garbage derivatived fuel synthesis procedure is a warm air drying.It is to utilize the thermal source of the weary flue gas of garbage derivatived fuel burning boiler outlet as warm air drying.It is that 200-350 ℃ weary flue gas is as drying source that the required hot blast of drying process in the described garbage derivatived fuel synthesis technology adopts the boiler economizer outlet temperature.Drying in the described garbage derivatived fuel synthesis technology is handled through cyclone dust collector or other inertial dust separator ash disposal with flue gas.
Modified mixed processes in the garbage derivatived fuel synthesis procedure of the present invention is a steam heating; It is to utilize steam generating to take out condensing turbine machine assembly air-exhausting or the back pressure turbine group outlet steam heating thermal source as modified mixed processes; Taking of above measure improved the capacity usage ratio and the generating efficiency of RDF power generation system greatly.Described heating steam is by taking out that the condensing turbine is bled or back pressure turbine group outlet temperature is that 130-200 ℃ steam is as thermal source.
Garbage derivatived fuel synthesis procedure of the present invention adopts rubbish → pulverizing → primary drying → magnetic separation → secondary pulverizing → secondary magnetic separation → three pulverizing → modified mixing → extrusion modling → redrying → RDF finished product → boiler burnings → steam generating.
In garbage derivatived fuel in the refuse incineration and power generation process of the present invention (RDF) the burning electricity generation operation, the general circulating fluidized bed boiler that adopts, its combustion system capital equipment is made up of boiler furnace, vapor superheater, steam generator, economizer, flue gas quenching apparatus, dust removal apparatus, the capital equipment of its power generation system by take out condensing turbine steam or back pressure turbine unit, generator set, the boiler feed water loop is formed.The boiler burning room temperature is 870-900 ℃, and boiler vapor outlet port temperature is 400-500 ℃, pressure 50-100Mpa, and boiler economizer smoke outlet mean temperature is 275 ℃, and dust removal apparatus flue gas inlet temperature is 155-165 ℃, and smog discharge temperature is 150 ℃.
Garbage fuel of the present invention is synthetic to be seen shown in the accompanying drawing 1 with burning electricity generation integral process flow process;
RDF fuel making system: moisture be about 50% crude waste 1 through coarse pulverization 2 (less than 100mm) after, behind rotary dryer primary drying 3 removal 20-30% (average 25%) moisture, remove metal through a magnetic separation 4, pulverize 5 (less than 50mm) through secondary again, secondary magnetic separation 6 is removed metal and is pulverized 7 backs (less than 20mm) for three times, screening 8, coarse grain returns broken 36, after adding former rubbish weight 1-8% (average 4.5%) lime additive 38, stir modified mixing 9 in reactor heating (temperature 80-150 ℃), after removing 5-10% (average 7.5%) moisture simultaneously, remove 10-15% (average 12.5%) moisture through machine for extrusion molding moulding 10 and secondary tunnel type drying 11 again, making water content is 5-10% (average 7.5%), length 30-50mm (average 32.5mm), the column type RDF fuel 12 of diameter 10-30mm (average 20mm), part can warehouse 37, partly or entirely delivers to boiler 13 material feeding mouths through line belt.
Wherein in garbage derivatived fuel (RDF) synthesis technology once with redrying technology, adopting boiler economizer 17 outlet temperatures is 200-350 ℃, the weary flue gas that average out to is 275 ℃, after cyclone dust collector 22 or other inertial dust separator ash disposal are handled as thermal source---hot blast 30.Modified mixed processes in garbage derivatived fuel (RDF) synthesis technology adds 29 heating of thermal recovery steam, bleed or steam turbine outlet (back pressure unit) temperature is 130-200 ℃ by the condensing turbine by taking out for required heating steam, mean temperature provides for 160 ℃ steam 27, wherein also has part to send 28 outside.Qualified discharge 34 after waste gas 31 process sack cleaners 32 behind the dry materials and wet scrubbing tower 33 purified treatment.After the described magnetic separation 4 metal recovery 39 is arranged; Metal recovery 35 is also arranged after the secondary magnetic separation 6.
The RDF combustion system: the RDF fuel 12 in the RDF Bunker tube is in conveyor belt is delivered to circulating fluidized bed boiler 13 earlier, temperature 870-900 ℃ of burning down in stove, flue gas is through vapor superheater, behind steam generator and the economizer 17,275 ℃ of outlet temperature average out to, partial fume 30 send leading portion RDF synthesis technology dry use, and all the other flue gases 24 are after the 26 cooling chillings of spraying water are suddenly to 155～165 ℃, the deacidification of spray lime 25, through sack cleaner 18 dust removal process after chimney 19 dischargings 37.The flying dust that sack cleaner 18 comes out is handled through flying dust treatment device 21; And also have bottom ash treatment device 20 behind the boiler; Boiler feed water 23 is arranged on the economizer 17.
Steam power generation and heat supply system: boiler feed water 23 is after the counter current exchanger heat exchange, enter evaporator evaporation in the stove, the steam that obtains obtains 450 ℃ through vapor superheater, the high pressure high temperature vapor of 60MPa enters steam turbine set 14 generatings 15, electric power sends 16 outside through after the transformation, simultaneously, steam turbine set 14 provides 7-9kg pressure, and 160-200 ℃ of heat supply user uses.
Claims (10)
1. a garbage fuel synthesizes and the burning electricity generation integral process, it is characterized in that this technology is synthesized by garbage derivatived fuel and the combustion power generation two procedures is formed, wherein garbage derivatived fuel synthesizes and comprises at least once pulverizing, dry, magnetic separation, extrusion modling forms after modified mixing, and the garbage derivatived fuel that makes is sent into the boiler burning generating.
2. the synthetic and burning electricity generation integral process of garbage fuel according to claim 1 is characterized in that the primary drying at least in the garbage derivatived fuel synthesis procedure is a warm air drying.
3. the synthetic and burning electricity generation integral process of garbage fuel according to claim 1 and 2 is characterized in that utilizing in the garbage derivatived fuel synthesis procedure thermal source of the weary flue gas of garbage derivatived fuel burning boiler outlet as warm air drying.
4. the synthetic and burning electricity generation integral process of garbage fuel according to claim 3 is characterized in that the modified mixed processes in the garbage derivatived fuel synthesis procedure is a steam heating.
5. the synthetic and burning electricity generation integral process of garbage fuel according to claim 4 is characterized in that in the garbage derivatived fuel synthesis procedure it being to utilize the steam generating to take out condensing turbine machine assembly air-exhausting or the back pressure turbine group outlet steam heating thermal source as modified mixed processes.
6. the synthetic and burning electricity generation integral process of garbage fuel according to claim 5 is characterized in that the garbage derivatived fuel synthesis procedure adopts rubbish → pulverizing → primary drying → magnetic separation → secondary pulverizing → secondary magnetic separation → three pulverizing → modified mixing → extrusion modling → redrying → RDF finished product → boiler burnings → steam generating.
7. the synthetic and burning electricity generation integral process of garbage fuel according to claim 3 is characterized in that it is that 200-350 ℃ weary flue gas is as drying source that the required hot blast of drying process in the described garbage derivatived fuel synthesis technology adopts the boiler economizer outlet temperature.
8. the synthetic and burning electricity generation integral process of garbage fuel according to claim 7 is characterized in that the drying in the described garbage derivatived fuel synthesis technology is handled through cyclone dust collector or other inertial dust separator ash disposal with flue gas.
9. the synthetic and burning electricity generation integral process according to claim 4 or 5 described garbage fuels is characterized in that required heating steam in the modified mixed processes in the described garbage derivatived fuel synthesis technology is by taking out that the condensing turbine is bled or back pressure turbine group outlet temperature is that 130-200 ℃ steam is as thermal source.
10. the equipment of an and burning electricity generation synthetic as garbage fuel as described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, it is characterized in that it according to described garbage fuel synthetic and burning electricity generation integral process, be furnished with boiler furnace, vapor superheater, steam generator, economizer, flue gas quenching apparatus, dust removal apparatus, also include by taking out condensing turbine steam or back pressure turbine unit, generator set, the power generating equipment that condenser, boiler feed water loop are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100531824A CN1912354A (en) | 2006-08-28 | 2006-08-28 | Integral process and equipment of garbage fuel synthesis and burning generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100531824A CN1912354A (en) | 2006-08-28 | 2006-08-28 | Integral process and equipment of garbage fuel synthesis and burning generation |
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| CN1912354A true CN1912354A (en) | 2007-02-14 |
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| CNA2006100531824A Pending CN1912354A (en) | 2006-08-28 | 2006-08-28 | Integral process and equipment of garbage fuel synthesis and burning generation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359729A (en) * | 2011-09-23 | 2012-02-22 | 北京航天动力研究所 | Method and system for jointly and circularly generating electricity by gasifying municipal garbage at high temperature |
| CN102434886A (en) * | 2011-11-02 | 2012-05-02 | 天津德为环保工程设备有限公司 | Agriculture and forestry plant waste high-efficient burning generating system |
| CN102921698A (en) * | 2012-10-30 | 2013-02-13 | 四川省科学城中心科技有限公司 | Heat energy combined cycle complete device for power generation system in preparation for refuse and sludge derived fuel |
| CN103223416A (en) * | 2012-01-29 | 2013-07-31 | 王自新 | Method for producing combustible fuel |
| CN105363756A (en) * | 2014-08-20 | 2016-03-02 | 福建正仁环保有限公司 | Domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process |
| CN105443171A (en) * | 2014-08-20 | 2016-03-30 | 福建正仁环保有限公司 | Incineration power generation process adopting refuse derived fuel (RDF) prepared from refuse |
| CN105665421A (en) * | 2016-02-22 | 2016-06-15 | 黎汉东 | Municipal refuse handling method and equipment |
| CN112177696A (en) * | 2020-08-24 | 2021-01-05 | 东南大学 | System and method for coupling garbage treatment and coal-fired power generation |
-
2006
- 2006-08-28 CN CNA2006100531824A patent/CN1912354A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359729A (en) * | 2011-09-23 | 2012-02-22 | 北京航天动力研究所 | Method and system for jointly and circularly generating electricity by gasifying municipal garbage at high temperature |
| CN102359729B (en) * | 2011-09-23 | 2013-05-22 | 北京航天动力研究所 | Method and system for jointly and circularly generating electricity by gasifying municipal garbage at high temperature |
| CN102434886A (en) * | 2011-11-02 | 2012-05-02 | 天津德为环保工程设备有限公司 | Agriculture and forestry plant waste high-efficient burning generating system |
| CN103223416A (en) * | 2012-01-29 | 2013-07-31 | 王自新 | Method for producing combustible fuel |
| CN102921698A (en) * | 2012-10-30 | 2013-02-13 | 四川省科学城中心科技有限公司 | Heat energy combined cycle complete device for power generation system in preparation for refuse and sludge derived fuel |
| CN102921698B (en) * | 2012-10-30 | 2014-12-24 | 四川省科学城中心科技有限公司 | Heat energy combined cycle complete device for power generation system in preparation for refuse and sludge derived fuel |
| CN105363756A (en) * | 2014-08-20 | 2016-03-02 | 福建正仁环保有限公司 | Domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process |
| CN105443171A (en) * | 2014-08-20 | 2016-03-30 | 福建正仁环保有限公司 | Incineration power generation process adopting refuse derived fuel (RDF) prepared from refuse |
| CN105665421A (en) * | 2016-02-22 | 2016-06-15 | 黎汉东 | Municipal refuse handling method and equipment |
| CN105665421B (en) * | 2016-02-22 | 2018-03-20 | 黎汉东 | A kind for the treatment of method for urban garbage and equipment |
| CN112177696A (en) * | 2020-08-24 | 2021-01-05 | 东南大学 | System and method for coupling garbage treatment and coal-fired power generation |
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Open date: 20070214 |