CN203820725U - Co-production synthesis gas equipment for semi-dry process coke quenching - Google Patents
Co-production synthesis gas equipment for semi-dry process coke quenching Download PDFInfo
- Publication number
- CN203820725U CN203820725U CN201320874956.5U CN201320874956U CN203820725U CN 203820725 U CN203820725 U CN 203820725U CN 201320874956 U CN201320874956 U CN 201320874956U CN 203820725 U CN203820725 U CN 203820725U
- Authority
- CN
- China
- Prior art keywords
- quenching
- water
- producer
- synthesis gas
- semidrying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010791 quenching Methods 0.000 title claims abstract description 104
- 230000000171 quenching effect Effects 0.000 title claims abstract description 103
- 239000000571 coke Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 21
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 21
- 238000001035 drying Methods 0.000 title abstract 3
- 239000007789 gas Substances 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000002918 waste heat Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011819 refractory material Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000002309 gasification Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000008234 soft water Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- XGEGHDBEHXKFPX-UHFFFAOYSA-N N-methylthiourea Natural products CNC(N)=O XGEGHDBEHXKFPX-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model relates to co-production synthesis gas equipment for semi-dry process coke quenching. The equipment can be used for achieving the aims of energy conservation and emission reduction, safety and environmental protection and resource recycling by providing a co-production synthesis gas technology capable of performing echelon operation, continuous gasification and alternate coke quenching. The co-production synthesis gas equipment is a water gas gasification furnace integrating dry process coke quenching and gasifier improvement, and comprises a single or more coke quenching gasification furnaces, wherein a red coke feeding device is arranged at the top of each coke quenching gasification furnace; a coke belt conveyor is connected with the bottom of each coke quenching gasification furnace, and is used for discharging quenched coke; the upper water gas outlet of each coke quenching gasification furnace is sequentially connected to a waste heat boiler and a water washing purifier; the upper waste gas outlet of each coke quenching gasification furnace is connected to a cooling dust remover; a water storage tank is sequentially connected with the water washing purifier and a sewage sedimentation tank by virtue of a water supply pipeline; the cooling dust remover is connected with the sewage sedimentation tank by virtue of a water delivery pipeline.
Description
Technical field
The utility model relates to a kind of quenching gas equipment processed, particularly relates to a kind of for semidrying quenching co-production synthesis gas equipment.
Background technology
At present, the most of quenching mode in domestic coke-oven plant is semidrying quenching, and semidrying quenching is traditional quenching mode, adopts spray cooling, in quenching process, produce a large amount of dust, objectionable impurities and all enter in a large number in atmosphere, cause the waste of environmental pollution and water resources.So according to national relevant policies requirement, now all at supporting dry coke quenching equipment, but dry coke quenching equipment is huge, investment cost is higher, and the coke burning of dry coke quenching and noxious gas emission are also current insurmountable technical barriers.Atmosphere intermission gasification technology furnace temperature is wayward on the other hand, and aerogenesis quality is low, and equipment attrition is large.
Utility model content
The technical problems to be solved in the utility model is that the environmental pollution, water resource waste, the equipment that in traditional quenching process, cause are huge, investment cost is high and aerogenesis quality is low, equipment attrition is large, utilize gerotor type water-gas producer, in conjunction with the extinguishing technique of coke oven design a kind of can echelon operation, gas processed, the co-production synthesis gas technology of quenching alternately continuously, the industrial equipments of a kind of energy-saving and emission-reduction, environmental protection, safety, resource circulation utilization is provided.
For reaching above-mentioned purpose, it is a kind of for semidrying quenching co-production synthesis gas equipment that the utility model provides, comprise quenching producer and waste heat boiler, quenching producer top water gas exit is connected with waste heat boiler by water-gas pipeline, waste heat boiler top vapour outlet is connected with quenching producer by steam-pipe, the water-gas producing in quenching producer is connected to waste heat boiler through top water gas exit by the first water-gas pipeline, make the water in water-gas and waste heat boiler carry out heat exchange, described water is converted to steam and enters described quenching producer by steam-pipe, described steam is used for the cooling for the first time of red Jiao in quenching producer and produces described water-gas.
Wherein tank connects described quenching producer by water pipe, for described red Jiao's cooling for the second time.
Wherein said quenching producer top is provided with the multiple spot atomizing water spraying device being connected with described water pipe along circumference.
Wherein said water-gas pipeline is connected to water-washing cleaning cartridge after waste heat boiler.
First half inwall in wherein said quenching producer has the insulation wearing layer of refractory material laying, and Lower Half inwall is jacketed type water wall and steam orifice plate.
Wherein said quenching producer top connects cooling dust remover through exhaust pipeline.
Wherein said quenching producer bottom connects belt conveyor system coke is discharged.
Water-cooled lock gas discharge valve is equipped with at wherein said quenching producer top.
Steam distributor is equipped with in wherein said quenching producer bottom.
First half inwall in wherein said quenching producer has the insulation wearing layer of refractory material laying, and Lower Half inwall is jacketed type water wall and steam orifice plate.
Wherein said quenching producer separate unit or many tablecloths are put.
The utility model is a kind of is that for semidrying quenching co-production synthesis gas equipment difference from prior art the utility model obtained following technique effect:
1, this kind of semidrying quenching producer solved the wayward problem of atmosphere intermission gasification technology furnace temperature; ensure aerogenesis quality; the wearing and tearing of equipment are reduced; solved in dry quenching(of coke) process the discharge of carrying dust secretly because of coke burning and part noxious gas emission and recycle gas, the environment of having saved Energy conservation simultaneously.
2, compared with traditional open type water law coke quenching tower, reduce that the dust that produces in quenching process and other obnoxious flavour enter atmosphere and the environmental pollution that causes has reduced water consumption, save water resources, also improve the quality of coke simultaneously.
3, adopt disposable quantitative quenching, after 800 ± 50 DEG C of degree coke are cooled to 200 ± 50 DEG C of degree, reduce moisture contamination, solve burnt coke quenching water and be cycled to repeat utilization, objectionable impurities circulation increases, the outer row's of quenching steam be traditional water law quenching arrange steam contamination thing total amount outward 1/20, reached the outer row standard of country to sewage completely.
4, this kind of operational process of craft, for the quenching of closed anaerobic, without combustion processes, without noxious gas emission, no dust pollution, is the industrial equipments of a kind of energy-saving and emission-reduction, environmental protection, safety, resource circulation utilization, and this facility investment cost has reduced by 1/3 compared with dry coke quenching equipment, also the economic benefit that has increased enterprise, has reduced production cost simultaneously.
Be described further for semidrying quenching co-production synthesis gas equipment the utility model is a kind of below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is a kind of structural representation for semidrying quenching co-production synthesis gas equipment of the utility model.
Description of reference numerals:
1-evacuated tube; 2-cooling dust remover; The red burnt transfer cask of 3-; The burnt tank chassis of 4-; The red burnt charging apparatus of 5-; 6-water-cooled lock gas discharge valve; 7-quenching producer; 8-is incubated wearing layer; 9-multiple spot atomizing water spraying device; 10-valve 1; 11-valve 2; 12-steam-pipe; 13-steam distributor; 14-rotary discharge valve; 15a-water pipe S1; 15b-water pipe S2; 15c-water pipe S3; 16-waste heat boiler; 17-water-washing cleaning cartridge; 18-water sprinkler system; 19-belt conveyor system; 20-detention tank; 21-tank; 22-exhaust pipeline; 23-water-gas pipeline; 24-soft water pipeline.
Embodiment
Below in conjunction with drawings and Examples, technical characterictic and the advantage with other above-mentioned to the utility model are described in more detail.
Three quenching producers 7, water-cooled lock gas discharge valve 6 is all equipped with on every top, on water-cooled lock gas discharge valve 6, red burnt charging apparatus 5 (bucket-shaped material-containing chamber) is housed, red burnt charging apparatus 5 tops are provided with transportable burnt tank chassis 4, by the red burnt charging apparatus 5 of red burnt importing in red burnt transfer cask 3, then enter and in described quenching producer 7, carry out quenching and produce water-gas, first half inwall in described quenching producer 7 has the insulation wearing layer 8 of refractory material laying, and Lower Half inwall is jacketed type water wall and steam orifice plate.Described quenching producer 7 top water gas exits connect waste heat boiler 16 through valve 11 by first " MQ " water-gas pipeline 23, described water-gas produces steam with the water of introducing by soft water pipeline 24 by heat exchange, described waste heat boiler 16 is connected to the steam distributor 13 of described quenching producer 7 bottoms by " ZQ " steam-pipe 12, thereby described steam is imported to described quenching producer 7, described red Jiao is lowered the temperature for the first time and produces water-gas, form quenching gas circulation processed, the water-gas of described waste heat boiler 16 interior heat exchanges is connected to water-washing cleaning cartridge 17 by second " MQ " water-gas pipeline 23 and purifies, tank 21 is connected to by " S1 " water pipe 15a the multiple spot atomizing water spraying device 9 that described quenching producer 7 tops arrange along circumference by raw water side face, lower the temperature for the second time, rotary discharge valve 14 is equipped with in described quenching producer 7 bottoms, belt conveyor system 19 is arranged at described rotary discharge valve 14 bottoms, thereby the coke after cooling is transferred out, introduce described water-washing cleaning cartridge 17 coal gas of purifying waste water by " S2 " water pipe 15b on the other hand, entering detention tank 20 by described " S2 " water pipe 15b afterwards processes, water after treatment is connected to cooling dust remover 2 purifying exhaust airs by " S3 " water pipe 15c, quenching producer 7 top waste gas are connected to described cooling dust remover 2 through valve 10 by " FQ " exhaust pipeline 22, and purified gas is discharged by evacuated tube 1, and waste water enters described detention tank 20 through " S3 " water pipe 15c.
1: produce water-gas:
Red Jiao of red heat that coke oven product is 1000 DEG C ± 50 DEG C packs red burnt transfer cask 3 into, be transported to directly over quenching producer 7 by burnt tank chassis 4, now burnt tank chassis 4 bottom discharge valves are opened, described quenching producer 7 (put by separate unit or many tablecloths, first half inwall has the insulation wearing layer 8 of refractory material laying, Lower Half inwall is jacketed type water wall and steam orifice plate) on water-cooled lock gas discharge valve 6 (reduce water-gas, steam is overflowed) open, the red burnt gravitate of red heat of 1000 DEG C ± 50 DEG C imports in described quenching producer 7 by red burnt charging apparatus 5, " ZQ " steam-pipe 12 passes into the high-temperature steam (soft water enters the steam that the interior heat exchange of waste heat boiler 16 produces) of native system by-product to described quenching producer 7, red Jiao of red heat of 1000 DEG C ± 50 DEG C is cooled to 800 DEG C ± 50 DEG C, in the process of cooling, produce the water-gas containing CO and CH4, water-gas from the 7 tops outlets of quenching producer through valve 11 by first " MQ " water-gas pipeline 23 enters waste heat boiler 16 and lowers the temperature, again by second " MQ " water-gas pipeline 23 enters water-washing cleaning cartridge 17 and purifies, after purifying, coal gas is imported into gas holder, the water-gas making can be used as combustion gas and coke(oven)gas converges, manufacture the product such as methyl alcohol or urea.
2: byproduct steam circulation:
As described in 1 the water-gas of quenching producer 7 interior generations enter as described in waste heat boiler 16, in the housing of described waste heat boiler 16, pass into a certain amount of water by soft water pipeline 24 simultaneously, in boiler, carry out heat exchange, generation steam enters described quenching producer 7 by described " ZQ " steam-pipe 12, and (steam distributor 13 is arranged at bottom, the steam that makes to enter in described quenching producer 7 evenly contacts with the coke packing in stove fully, reach the object of rapid cooling gas processed), start next circulation.
3: quantitative water supply quenching:
As described in 1, red Jiao of red heat of interior 1000 DEG C ± 50 DEG C of quenching producer 7 is cooled to after 800 DEG C ± 50 DEG C, make the coke of 800 DEG C ± 50 DEG C be cooled to 200 DEG C ± 50 DEG C by " S1 " water pipe 15a to the interior uniform gauge water that sprays of multiple spot atomizing water spraying device 9 that utilizes of described quenching producer 7, thoroughly extinguish coke.High-quality Jiao after extinguishing discharges by coke rotary conveyor 19 through rotary discharge valve 14.
4: quantitative water supply quenching off gas treatment:
As described in 3, the coke of interior 800 DEG C ± 50 DEG C of quenching producer 7 is cooled to 200 DEG C ± 50 DEG C while thoroughly extinguishing coke, can produce dust and other harmful exhaust gas body, obnoxious flavour is introduced after cooling dust remover 2 dedustings by " FQ " exhaust pipeline 22 through valve 10, enters atmosphere through evacuated tube 1.
5: water circulation system:
The needed water of system is introduced from tank 21 by water pump, and quantitative water enters described quenching producer 7 by " S1 " feedwater piping 15a and extinguishes 800 DEG C ± 50 DEG C following red Jiao; The clean water of drawing from " S2 " water pipe 15b enters water-washing cleaning cartridge 17, and water sprinkler system 18 makes clean water fully contact purification with water-gas.Water cycle after water-washing cleaning cartridge 17 enters detention tank 20 through described " S2 " water pipe 15b, after precipitation, filtration, enter cooling dust remover 2 from " S3 " water pipe 15c, after dedusting, introduce detention tank 20 through described " S3 " water pipe 15c and circulate; Draw soft water by soft water pipeline 24 and enter waste heat boiler 16, produce steam through " ZQ " steam-pipe 12 enters quenching producer 7.
The discharge pipe of described quenching producer 7 and high-temperature gas relief outlet pipeline are equipped with high temperature resistant, wear resistance lining.
The above quenching producer 7 can be separate unit or many, is not only confined to 3 in embodiment.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall into the definite protection domain of the utility model claims.
Claims (10)
1. one kind for semidrying quenching co-production synthesis gas equipment, it is characterized in that: comprise quenching producer (7) and waste heat boiler (16), quenching producer (7) top water gas exit is connected with waste heat boiler (16) by water-gas pipeline (23), waste heat boiler (16) top vapour outlet is connected with quenching producer (7) by steam-pipe (12), the water-gas producing in quenching producer (7) is connected to waste heat boiler (16) through top water gas exit by water-gas pipeline (23), make the water in water-gas and waste heat boiler (16) carry out heat exchange, described water is converted to steam and enters described quenching producer (7) by steam-pipe (12), described steam is used for the cooling for the first time of red Jiao in quenching producer (7) and produces described water-gas.
2. semidrying quenching co-production synthesis gas equipment according to claim 1, it is characterized in that: tank (21) connects described quenching producer (7) by water pipe (15a), for described red Jiao's cooling for the second time.
3. semidrying quenching co-production synthesis gas equipment according to claim 2, is characterized in that: described quenching producer (7) top is provided with the multiple spot atomizing water spraying device (9) being connected with described water pipe (15a) along circumference.
4. semidrying quenching co-production synthesis gas equipment according to claim 1, is characterized in that: described water-gas pipeline (23) is connected to water-washing cleaning cartridge (17) after waste heat boiler (16).
5. semidrying quenching co-production synthesis gas equipment according to claim 1, is characterized in that: described quenching producer (7) top connects cooling dust remover (2) through exhaust pipeline (22).
6. semidrying quenching co-production synthesis gas equipment according to claim 1, is characterized in that: described quenching producer (7) bottom connects belt conveyor system (19) coke is discharged.
7. semidrying quenching co-production synthesis gas equipment according to claim 1, is characterized in that: water-cooled lock gas discharge valve (6) is equipped with at described quenching producer (7) top.
8. semidrying quenching co-production synthesis gas equipment according to claim 1, is characterized in that: steam distributor (13) is equipped with in described quenching producer (7) bottom.
9. semidrying quenching co-production synthesis gas equipment according to claim 1, it is characterized in that: the first half inwall in described quenching producer (7) has the insulation wearing layer (8) of refractory material laying, and Lower Half inwall is jacketed type water wall and steam orifice plate.
10. according to the semidrying quenching co-production synthesis gas equipment described in any one in claim 1 to 9, it is characterized in that: described quenching producer (7) separate unit or many tablecloths are put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874956.5U CN203820725U (en) | 2013-12-27 | 2013-12-27 | Co-production synthesis gas equipment for semi-dry process coke quenching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874956.5U CN203820725U (en) | 2013-12-27 | 2013-12-27 | Co-production synthesis gas equipment for semi-dry process coke quenching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203820725U true CN203820725U (en) | 2014-09-10 |
Family
ID=51476245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874956.5U Expired - Lifetime CN203820725U (en) | 2013-12-27 | 2013-12-27 | Co-production synthesis gas equipment for semi-dry process coke quenching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203820725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830353A (en) * | 2015-05-10 | 2015-08-12 | 李东田 | Dry-wet-combined coke quenching method |
-
2013
- 2013-12-27 CN CN201320874956.5U patent/CN203820725U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830353A (en) * | 2015-05-10 | 2015-08-12 | 李东田 | Dry-wet-combined coke quenching method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103710048B (en) | Synthetic gas coproduction device for semi-dry coke quenching | |
| CN103205276B (en) | System for producing clean energy | |
| CN104031663B (en) | A kind of wet quenching novel process continuously | |
| CN102732269A (en) | Coke dry quenching method for coal coking device | |
| CN201770652U (en) | Semi-coke dry quenching system | |
| CN203820725U (en) | Co-production synthesis gas equipment for semi-dry process coke quenching | |
| CN103980949B (en) | A kind of without discharge high-volatile feed coal segmentation pyrolysis sub-prime Application way and device | |
| CN205241615U (en) | Mix and burn gasifier that contains high -concentration ammonia nitrogen and COD sewage | |
| CN206266493U (en) | The system that a kind of coal is classified dual treatment | |
| CN203782114U (en) | Dry pulverized coal gasification system | |
| CN203947067U (en) | A kind of novel controlled environmental protection and energy saving coke quenching auxiliary | |
| CN203079920U (en) | Spiral tar cracking gasifier | |
| CN103215077B (en) | Control device of thermal cycle continuous coal gangue pyrolysis gasification comprehensive device | |
| CN101974351A (en) | Scale fixed bed biomass gasification power generation production technology and complete equipment | |
| CN105647584B (en) | A technique for utilizing blast furnace slag waste heat recycling biomass and innoxious chromium slag | |
| CN212669621U (en) | Gas treatment device for catalytic cracking of biomass gas | |
| CN107987889A (en) | Semi-coke gasification gas boiler energy-saving, the method for emission reduction | |
| CN208748019U (en) | Heat accumulating type hydrogen-rich gas heat carrier moving bed pyrolysis system | |
| CN203487117U (en) | Device for producing natural gas by household garbage | |
| CN202226828U (en) | Static-bed coke quenching gas generating furnace | |
| CN203999526U (en) | A kind of for high efficiency novel lime-ash capturing device in airflow bed gasification furnace | |
| CN205391950U (en) | Device is used multipurposely to tail gas | |
| CN219550529U (en) | Garbage pyrolysis gasification and leachate treatment and utilization system | |
| CN103215083B (en) | Control method of thermal cycle continuous coal gangue pyrolysis gasification comprehensive device | |
| CN204417430U (en) | The device of high temperature coke UTILIZATION OF VESIDUAL HEAT IN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |