CN201381296Y - Electric heating coking furnace for continuous coal pyrolysis - Google Patents
Electric heating coking furnace for continuous coal pyrolysis Download PDFInfo
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- CN201381296Y CN201381296Y CN200920151435U CN200920151435U CN201381296Y CN 201381296 Y CN201381296 Y CN 201381296Y CN 200920151435 U CN200920151435 U CN 200920151435U CN 200920151435 U CN200920151435 U CN 200920151435U CN 201381296 Y CN201381296 Y CN 201381296Y
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- 238000004939 coking Methods 0.000 title claims abstract description 60
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 20
- 238000005485 electric heating Methods 0.000 title abstract 7
- 239000000571 coke Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 52
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000003763 carbonization Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
An electric heating coking furnace for continuous coal pyrolysis comprises, from top to bottom in the furnace body, a hopper, a preheating segment, an electric heating segment, an air circulating cooling segment and a coke removing segment, wherein control valves are respectively arranged between each two of the hopper, the preheating segment, the electric heating segment, the air circulating cooling segment and the coke removing segment. The electric heating coking furnace has the advantages as follows: (1) the flowing speed and the heating effect of mould coal can be controlled freely due to the effective control of corresponding valves during coking the mould coal; (2) the electric heating coking furnace can achieve the desired temperature and atmosphere for coking and pyrolysis of coal; (3) the coking furnace can fully utilize heat energy so as to save energy and protect environment; (4) the coke quality is enhanced, and less coke dust and coke particles are generated; and (5) all of coal gas can be displaced by electric heating so as to effectively solve the smoke pollution problem.
Description
Technical field
The utility model relates to a kind of coking furnace, especially relates to a kind of electrical heating continuous pyrolysis of coal coking furnace.
Background technology
One, coking principle
Coking is produced, and its basic raw material is a coking coal, and it is with coking coal secluding air heat in airtight coking furnace, emits moisture and adsorbed gas, decomposes to produce coal gas and tar etc. remaining coke based on carbon subsequently.This pyrolysis of coal process is commonly referred to coal carbonization.
Coal carbonization is divided into three kinds of low-temperature pyrolysis, medium temperature carbonization and high temperature carbonizations.Their key distinction is pyrogenous outlet temperature difference, and low-temperature pyrolysis is 500 ℃-600 ℃, and medium temperature carbonization is 700 ℃-800 ℃, and high temperature carbonization is 900 ℃-1000 ℃.The present refining coking furnace overwhelming majority belongs to the high-temperature coking stove, main production metallurgy coke, coke-oven gas and coking chemistry product.This high-temperature coking process is exactly a high temperature carbonization.
Two, the pyrolytic process of coking coal
Coking coal generates coke in the secluding air high-temperature heating process, it has following properties: when being heated to about 400 ℃, just begin to form the fused plastic mass, and self cracking constantly produces oil gas, this class oil gas is through condensation, cooling and reclaim technology, obtains the coking furnace coal gas of various Chemicals and purification.
When temperature constantly raises, oil gas is constantly emitted, and plastic mass is further decomposed, and portion gas is separated out, and plastic mass is solidified into semicoke gradually, produces some small bubbles simultaneously, becomes fixed and dredges the hole.
Temperature raises again, and semicoke continues to shrink, and emits some oil gas, generates coke at last.
Three, traditional coking furnace
Tradition coking furnace body of heater is mainly built by laying bricks or stones with silica brick and is formed, and is divided into one to four part that is connected: furnace roof, coking chamber (both sides are combustion chambers), chute, regenerator.The furnace roof district is provided with coaling hole, combustion chamber quirk peephole and raw gas of coking chamber and imports the rising pore etc. of natural gas gathering system.Coking chamber is long narrow square chamber, in order to hold coal charge.Coal charge can be packed into by coaling hole or pusher side (tamping coking).The combustion chamber is in the coking chamber both sides, and coal gas burns within it, and the heat that burning produces imports coking chamber into through coking chamber-combustion chamber party wall, coal charge is heated to high temperature is smelt coke.Chute is the gas channel between regenerator, combustion chamber quirk.Regenerator is in coking chamber and bottom, combustion chamber, in be filled with checker brick with holes.Instantly in sending down abnormally ascending when stream,, the high-temp waste gas stream that burning produces is the checker brick heating, when being exchanged into upstream, enters the combustion chamber after making low-grade gas by regenerator or preheating of air.A coking furnace is made up of tens of holes coking chamber.
Though the modern coking stove has the multiple type of furnace, but be nothing but to carry out effective permutation and combination because of quirk structure, types of gas heated and the difference of going into stove mode, regenerator structure and the mode of coalingging thereof, for quality and the output that guarantees coke, coal gas, not only need suitable coal proportioning but also good exterior condition will be arranged.Modern coking furnace body topmost is a furnace roof, under the furnace roof combustion chamber and the coking chamber of alternate configuration, regenerator and the chute district that is connected accumulation of heat and combustion chamber are arranged at the body of heater bottom, the bottom flue of each regenerator bottom links to each other with flue by exchange shutter (flue), flue is located at both sides, formula basis in the coking furnace basis, the flue end leads to chimney, thus also claim coking furnace to form by two districts, three Room, i.e. coking chamber, combustion chamber, chute district, furnace roof district and basic component.
Four, traditional coking furnace has a following defective: 1) can not the continuous production coke, and the coke of producing is irregular; 2) pollution to environment is bigger, does not meet the planning of Sustainable development; 3) coke chemicals reclaim complex process; 4) maintenance cost is high.
The utility model content
The technical problems to be solved in the utility model provides a kind of electrical heating continuous pyrolysis of coal coking furnace; This coking furnace can continuously produce well-regulated spherical coke; Production process is polluted little, energy-conserving and environment-protective; Prolong the coal industrial chain, improved the quality of product; Maintenance cost is cheap.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of electrical heating continuous pyrolysis of coal coking furnace, it comprises body of heater,, is provided with hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and coke discharging section successively from top to bottom in the described body of heater; All be provided with by-pass valve control between described hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and the coke discharging section.
Further, the hollow space cross section of described hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and coke discharging section is rounded.
Further, the furnace lining thermal conduction portions of described body of heater adopts silicon carbide brick, and it is not easily damaged, and thermal conductivity is good, and the Coke-oven Maintenance cost is low.
Further, the external lagging material of described body of heater adopts the aluminium silicate wool plate, and externally good heat insulation effect has been played in heat radiation.
Further, described preheating heating zone comprises two sections of preheated one-section and preheatings;
Further, described electrically heated main paragraph comprises the semicoke section on top, four sections of one section of middle part successive electrically heated, two sections of electrically heated, three sections of electrically heated and electrically heated, the overheated zone of bottom and control hot-zone.
Further, described gas cycle cooling comprises driedly puts out one section and driedly put out two sections, describedly driedly puts out one section and driedly put out two sections inwalls and be provided with backplate, and this backplate is provided with the wind hole, and backplate is outward a circulation cold gas air compartment, and this air compartment is connected with a gas blower by pipeline; Described gas blower is connected by a pipeline and a gas thermostat, and described gas thermostat is connected by pipeline and preheated one-section; Describedly driedly put out two sections and be connected by pipeline and raw material mixed coal well heater, described raw material mixed coal well heater is connected for two sections by pipeline and preheating.
Further, be provided with plate valve between described hopper and the preheated one-section; Between two sections of described preheated one-section and the preheatings, between two sections of preheatings and the semicoke section, between overheated zone and the control hot-zone, the control hot-zone and driedly put out between one section, dried put out one section and driedly put out between two sections, dried putting out between two sections and the coke discharging section be respectively equipped with gate valve.
The beneficial effects of the utility model are as follows:
1, coking furnace of the present utility model corresponding valve in coking briquette rolls control effectively; Its velocity of flow and heating effect can carry out freely controlling.
2, coking furnace of the present utility model has solved needed temperature of coal pyrolysis coking and ambiance.
3, in the body of heater of coking furnace of the present utility model in process of coking, have complex heat transfer processes such as radiation, convection current, conduction, utilize heat energy to pass to principle simultaneously, to low temperature, the characteristic of bottom to top arranged, strengthen the thermal energy transfer time by high temperature.
4, coking furnace of the present utility model is utilizing the circulation that in the discarded circulation traditional water coke quenching method is changed into rare gas element, transform law according to heat energy the waste heat of coke has directly been carried out effective utilization, feed coal and moulded coal are carried out preheating, reached making full use of of heat energy, energy-conserving and environment-protective.
5, by reasonable coal blending, the low-temperature pressure moulding has reduced raw materials cost, has improved the coke quality, has reduced the generation of the burnt grain of burnt foam.
6, can produce foundry coke, metallurgical coke, gas Jiao, activated coke etc. as requested.
7, by electrically heated, displace whole coal gas, solved smoke pollution effectively.
8, the raw gas that displaces is changed product again and is reclaimed (tar, crude benzol, sulphur, liquefied ammonia), and purified gas separates conversion and produces methyl alcohol and high heating value combustion gas, has increased the output value.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail
Fig. 1 is the structural representation of a kind of electrical heating continuous pyrolysis of coal coking furnace of the present utility model;
Fig. 2 is a gas circulation cooling principle block diagram of the present utility model.
Embodiment
Shown in Fig. 1,2, a kind of electrical heating continuous pyrolysis of coal coking furnace, it comprises body of heater 100, be provided with hopper 1, preheating heating zone 2, electrically heated main paragraph 3, gas cycle cooling 4 and coke discharging section 5 in the described body of heater, preheating heating zone 2 is established in the below of described hopper 1, electrically heated main paragraph 3 is established in the below of described preheating heating zone 2, and gas cycle cooling 4 is established in described electrically heated main paragraph 3 belows, and coke discharging section 5 is established in described gas cycle cooling 4 belows; Furnace lining heat conduction 101 parts of described body of heater 100 adopt silicon carbide brick.Not easily damaged, thermal conductivity is good, and the Coke-oven Maintenance cost is low; Described body of heater 100 external lagging materials adopt aluminium silicate wool plate 102, and externally good effect has been played in heat radiation.
Described preheating heating zone 2 comprises one section preheating 21 and two sections preheatings 22; Establish plate valve 60 between described hopper 1 and one section preheating, this plate valve 60 can be controlled raw material and enter one section preheating 21 from hopper 1.
Described electrically heated main paragraph 3 comprises the semicoke section 31 on top, one section electrically heated of middle part successive 32, two sections electrically heated 33, three sections electrically heated 34 and four sections electrically heated 35, the overheated zone 36 of bottom and control hot-zones 37.
The principle of work of described electrically heated main paragraph 3 is as follows: the thermal source of described semicoke section 31 comes from the waste heat of lower heating section, and the thermal source that transmits by the bottom produces a large amount of raw gas, and sprays the raw gas gathering system by ammoniacal liquor, derives raw gas; Four sections electrically heated of successive, 32,33,34,35 controlled temperature are respectively: 480～520 ℃, 680～720 ℃, 880～920 ℃, 1030～1120, zone heating can guarantee the output and the quality of raw gas, can guarantee the intensity and the quality of coke simultaneously; After 1030～1120 ℃ high temperature coke in four sections electrically heated 35 enters overheated zone 36, the logical superheated transfer mode of a large amount of waste heats of high temperature coke, upwards transmit piecemeal to four sections electrically heated 35, three sections electrically heated 34, two sections electrically heated 33, one section electrically heated 32, become the thermal source of semicoke section 31; The coke that overheated zone 36 cools to after 900～920 ℃ enters control hot-zone 37, and heat further upwards transmits, and reaches the purpose of control heat, and temperature drops to 800～820 ℃, and coke enters gas cycle cooling 4 then.
Described gas cycle cooling 4 comprises driedly puts out one section 41 and driedly put out two section 42, describedly driedly puts out one section 41 and driedly put out two section 42 inwall and be provided with backplate 43, and it is (not shown that this backplate 43 is provided with the wind hole! ), be circulation cold gas air compartment 44 outside the backplate 43, this air compartment 44 is connected with a gas blower 45 by pipeline; Described gas blower 45 is connected by a pipeline and a gas thermostat 46, and described gas thermostat 46 is connected by pipeline and one section preheating 21; Describedly driedly put out two section 42 and be connected by pipeline and raw material mixed coal well heater 47, described raw material mixed coal well heater 47 is connected by pipeline and two sections preheatings 22.
The principle of described gas circulation is: 140～160 ℃ gas behind gas thermostat 46 temperature controls driedly puts out one section 41 and the dried circulation cold gas air compartment 44 that puts out two section 42 by what gas blower 45 was sent into gas cycle cooling 4, and enter body of heater 100 inside by backplate 43 wind holes, coke after overheated zone 36 coolings is cooled off, cooling gas gas becomes 400～450 ℃ high-temperature gas, (coke is cooled to 200～250 ℃ simultaneously, discharge by coke discharging section 5) 400～450 ℃ the incoming stock mixed coal well heater 47 of high-temperature gas, when being heated to 140～160 ℃, coal feed coal is pressed into spherical moulded coal with briquette shaping machine, hot-gas temperature is reduced to 350～400 ℃, and two sections preheatings 22 that enter body of heater 100 tops, after making spherical moulded coal be preheated to 300～350 ℃, enter one section preheating 21 again, make spherical moulded coal be preheated to 190～210 ℃, after round-robin gas is cooled to 245～255 ℃, sends back to gas thermostat 46 temperature controls and handle after gas blower 45 circulates continuously.
21 to two sections preheatings 22 of described one section preheating are provided with gate valve 61; Two sections preheating 22 to semicoke sections 31 are provided with gate valve 62; Overheated zone 36 to control hot-zone 37 is provided with gate valve 63; Control hot-zone 37 is put out one section 41 and is provided with gate valve 64 to dried; Driedly put out one section 41 and put out two section 42 and be provided with gate valve 65 to dried; Driedly put out two section 42 and be provided with gate valve 66 between the coke discharging section 5; Gate valve 61-66 can control the turnover of raw material or product automatically.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to the row that conspicuous variation that the technical solution of the utility model extends out or change still are in protection domain of the present utility model.
Claims (7)
1, a kind of electrical heating continuous pyrolysis of coal coking furnace, it comprises body of heater, it is characterized in that: be provided with hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and coke discharging section in the described body of heater from top to bottom successively; Be respectively equipped with by-pass valve control between described hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and the coke discharging section.
2, according to the described electrical heating continuous pyrolysis of coal of claim 1 coking furnace, it is characterized in that: the hollow space cross section of described hopper, preheating heating zone, electrically heated main paragraph, gas cycle cooling and coke discharging section is rounded.
3, according to claim 1 or 2 described electrical heating continuous pyrolysis of coal coking furnaces, it is characterized in that: the furnace lining thermal conduction portions of described body of heater adopts silicon carbide brick; The external lagging material of described body of heater adopts the aluminium silicate wool plate.
4, according to the described electrical heating continuous pyrolysis of coal of claim 3 coking furnace, it is characterized in that: described preheating heating zone comprises two sections of preheated one-section and preheatings.
5, according to the described electrical heating continuous pyrolysis of coal of claim 4 coking furnace, it is characterized in that: described electrically heated main paragraph comprises the semicoke section on top, four sections of one section of middle part successive electrically heated, two sections of electrically heated, three sections of electrically heated and electrically heated, the overheated zone of bottom and control hot-zone.
6, according to the described electrical heating continuous pyrolysis of coal of claim 5 coking furnace, it is characterized in that: described gas cycle cooling comprises driedly puts out one section and driedly put out two sections, describedly driedly put out one section and driedly put out two sections inwalls and be provided with backplate, this backplate is provided with the wind hole, backplate is outward a circulation cold gas air compartment, and this air compartment is connected with a gas blower by pipeline; Described gas blower is connected by a pipeline and a gas thermostat, and described gas thermostat is connected by pipeline and preheated one-section; Describedly driedly put out two sections and be connected by pipeline and raw material mixed coal well heater, described raw material mixed coal well heater is connected for two sections by pipeline and preheating.
7, according to the described electrical heating continuous pyrolysis of coal of claim 6 coking furnace, it is characterized in that: be provided with plate valve between described hopper and the preheated one-section; Between two sections of described preheated one-section and the preheatings, between two sections of preheatings and the semicoke section, between overheated zone and the control hot-zone, the control hot-zone and driedly put out between one section, dried put out one section and driedly put out between two sections, dried putting out between two sections and the coke discharging section be respectively equipped with gate valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920151435U CN201381296Y (en) | 2009-04-23 | 2009-04-23 | Electric heating coking furnace for continuous coal pyrolysis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920151435U CN201381296Y (en) | 2009-04-23 | 2009-04-23 | Electric heating coking furnace for continuous coal pyrolysis |
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| CN201381296Y true CN201381296Y (en) | 2010-01-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531906B (en) * | 2009-04-23 | 2012-07-18 | 山西利华新科技开发有限公司 | Method for electrical heating continuous coal pyrogenation coking and coking furnace thereof |
| CN104726116A (en) * | 2015-04-01 | 2015-06-24 | 曲靖众一精细化工股份有限公司 | Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace |
-
2009
- 2009-04-23 CN CN200920151435U patent/CN201381296Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531906B (en) * | 2009-04-23 | 2012-07-18 | 山西利华新科技开发有限公司 | Method for electrical heating continuous coal pyrogenation coking and coking furnace thereof |
| CN104726116A (en) * | 2015-04-01 | 2015-06-24 | 曲靖众一精细化工股份有限公司 | Small-particle four-section moving bed dry distillation furnace with hydrogen-enriched environment and dry distillation method of small-particle four-section moving bed dry distillation furnace |
| CN104726116B (en) * | 2015-04-01 | 2018-01-30 | 曲靖众一精细化工股份有限公司 | A kind of four sections of moving bed environment rich gas retorts of little particle and its method for destructive distillation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170913 Address after: 032200 Shanxi city of Lvliang province Sanquan coking Industrial Park Patentee after: Shanxi Huatianxin Energy Developments Ltd Address before: 406 room 9, 030006 science and Technology Street, hi tech Zone, Shanxi, Taiyuan Patentee before: Shanxi Lihuaxin Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20180423 |