CN107965748A - A kind of coal oven dithio-gas heat recovery system free of discontinuities - Google Patents
A kind of coal oven dithio-gas heat recovery system free of discontinuities Download PDFInfo
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- CN107965748A CN107965748A CN201711405018.XA CN201711405018A CN107965748A CN 107965748 A CN107965748 A CN 107965748A CN 201711405018 A CN201711405018 A CN 201711405018A CN 107965748 A CN107965748 A CN 107965748A
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- 239000003245 coal Substances 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 53
- 239000000571 coke Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000012716 precipitator Substances 0.000 claims abstract description 13
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004939 coking Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005235 decoking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B43/00—Preventing or removing incrustations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coke Industry (AREA)
Abstract
The present invention relates to a kind of coal oven dithio-gas heat recovery system free of discontinuities, including hot precipitator, waste heat boiler, cryogenic heat exchanger, oxygen-eliminating device, sweet-water tank, heating furnace, reducing-and-cooling plant, steam superheater and decompressor；The present invention uses the heat of waste heat heat boiler high efficiente callback coal oven dithio-gas, and the steam for producing multi-parameter is used for high-voltage power user and low-pressure steam user, and realizes that process system steam inside recycles, and reaches energy saving purpose；Meanwhile ensure the operation free of discontinuities of waste heat reclaiming process system and do not influence coke oven safety in production.
Description
Technical field
The present invention relates to residual heat utilizing technology of coke oven crude gas field, more particularly to a kind of coal oven dithio-gas heat are free of discontinuities
Recovery system.
Background technology
Coking process flow is substantially the industrial flow using carbon stream as main body train of thought, therefore solves carbon stream
It is energy-saving to be of great significance for optimization coking process flow.Heat expenditure in coke production mainly by it is red it is burnt from
650~750 DEG C of medium temperature waste heats, coke oven flues that 950~1050 DEG C of high-temperature residual heats, the coal oven dithio-gas taken out of in coke oven are taken out of give up
180~250 DEG C of low temperature exhaust heats and four part of furnace body surface heat loss composition that gas is taken out of.Wherein, coal oven dithio-gas is taken out of
650~750 DEG C of medium temperature waste heats account for the 37% of coke oven heat expenditure, this partial heat of high efficiente callback recycles coal chemical enterprise secondary energy sources
It is particularly important that utilization, but coal oven dithio-gas component is extremely complex, easily condensation precipitation is attached in heat-exchanger rig and graphite occurs
Change effect.At present, waste heat of coke oven crude gas, but recuperation of heat are mainly recycled using Ascension Pipe Gasification cooling device, HYWHR technologies etc.
Efficiency is low, product category is single, it is easy generation coke oven coke oven uprising tube leak to coke furnace carbonization chamber phenomena such as, influence coke oven keep the safety in production.
The content of the invention
It is burnt using the high efficiente callback of waste heat heat boiler the present invention provides a kind of coal oven dithio-gas heat recovery system free of discontinuities
The heat of stove raw coke oven gas, the steam for producing multi-parameter is used for high-voltage power user and low-pressure steam user, and realizes technique system
System steam inside recycles, and reaches energy saving purpose；Meanwhile ensure the operation free of discontinuities of waste heat reclaiming process system and do not influence Jiao
Stove is kept the safety in production.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of coal oven dithio-gas heat recovery system free of discontinuities, including hot precipitator, waste heat boiler, cryogenic heat exchanger,
Oxygen-eliminating device, sweet-water tank, heating furnace, reducing-and-cooling plant, steam superheater and decompressor；The waste heat boiler by drum and
Vapor heat exchanger A, the vapor heat exchanger B connected respectively by tedge, down-comer and drum；The raw coke oven gas of hot precipitator is defeated
Enter the gas collecting tube of end connection coke oven, the raw coke oven gas output terminal of hot precipitator connects vapor heat exchanger A and steaming in waste heat boiler
Vapour heat exchanger B；The demineralized water output terminal of sweet-water tank pumps the demineralized water input terminal of connection oxygen-eliminating device, oxygen-eliminating device by deaerated feedwater
Boiler feedwater input terminal pass through boiler feed pump connect cryogenic heat exchanger boiler feedwater output terminal, the boiler of cryogenic heat exchanger
Feed water input terminal connection drum；The conduction oil output terminal of the conduction oil input terminal connection heating furnace of cryogenic heat exchanger, low-temperature heat exchange
The conduction oil input terminal of the conduction oil output terminal connection heating furnace of device；The saturated vapor output terminal of drum connects pressure and temperature reducing at the same time
The saturated vapor input terminal of device and steam superheater, the desuperheating water input terminal connection boiler feedwater pump discharge of reducing-and-cooling plant
Pipeline；The low-pressure steam output terminal connection low-pressure steam user of reducing-and-cooling plant；Steam superheater sets coke dry quenching furnace recyclegas
Entrance, the high pressure superheated steam output terminal connection high-voltage power user of steam superheater, the high pressure superheated steam of steam superheater
Output terminal connects vapor heat exchanger A and vapor heat exchanger B by decompressor.
The vapor heat exchanger A sets raw coke oven gas entry and exit pressure difference monitoring device, vapor heat exchanger A and vapor heat exchanger B it
Between raw coke oven gas input channel on set switching valve, set block valve respectively on the tedge of vapor heat exchanger A, down-comer；Raw coke oven gas
Entry and exit pressure difference monitoring device and switching valve, block valve interlocked control.
Ash cellar is set below the hot precipitator.
The heating furnace uses heated by gas.
The vapor heat exchanger A, the sewerage output terminal of vapor heat exchanger B connect blowdown by periodical blowdown expander
Well.
Compared with prior art, the beneficial effects of the invention are as follows：
1) coal oven dithio-gas is led into waste heat boiler and carries out coal oven dithio-gas heat recovery and utilization, ensure heat-exchange system
With coke oven independent operating；It is capable of the heat of high efficiente callback coal oven dithio-gas, produces the steam of many kinds of parameters and realize process system
Steam inside recycles, and reaches energy saving purpose；
2) recycling free of discontinuities of coal oven dithio-gas heat is realized, is not required to halt production coke cleaning, steam can be avoided to greatest extent
Heat exchange is because of the possibility of coking booster；And steam user can be continuously steam is provided；
3) it is abundant to make use of self-produced 550 DEG C of low-pressure superheated steams to improve steam circulation utilization rate, clearly as heat source is burnt
Burnt effect is good, speed is fast, avoids the damage of mechanical decoking exchange heat pipe, while has saved the energy；
4) heat-exchange system and coke oven independent operation, are independent of each other, and can be matched with a variety of production-scale coke ovens；
5) monitor coking situation in heat exchanger tube on-line, realize and automatically switch between vapor heat exchanger A, B；
6) coke dry quenching furnace recyclegas utilization rate is improved；
7) water cycle efficieny is high in system, reduces outer net water supply.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of coal oven dithio-gas heat recovery system free of discontinuities of the present invention.
In figure：1. 2. hot precipitator of coke oven, 3. sweet-water tank, 4. deaerated feedwater pumps 5. oxygen-eliminating device, 6. boiler feedwater
Pump 7. cryogenic heat exchanger, 8. tedge, 9. down-comer, 10. periodical blowdown expander, 11. sewage well, 12. ash cellar, 13. waste heat
17. decompressor of boiler 14. reducing-and-cooling plant, 15. steam superheater, 16. heating furnace, 18. vapor heat exchanger A 19. steams
20. drums of vapour heat exchanger B
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of coal oven dithio-gas heat recovery system free of discontinuities of the present invention, including hot precipitator 2,
Waste heat boiler 13, cryogenic heat exchanger 7, oxygen-eliminating device 5, sweet-water tank 3, heating furnace 16, reducing-and-cooling plant 14, steam superheater 15
And decompressor 17；The steaming that the waste heat boiler 13 is connected by drum 20 and respectively by tedge 8, down-comer 9 with drum 20
Vapour heat exchanger A 18, vapor heat exchanger B 19；The gas collecting tube of the raw coke oven gas input terminal connection coke oven 1 of hot precipitator 2, high temperature remove
Vapor heat exchanger A 18 and vapor heat exchanger B 19 in the raw coke oven gas output terminal connection waste heat boiler 13 of dirt device 2；Sweet-water tank 3
Demineralized water output terminal pass through deaerated feedwater pump 4 connection oxygen-eliminating devices 5 demineralized water input terminals, oxygen-eliminating device 5 boiler feedwater input
End connects the boiler feedwater output terminal of cryogenic heat exchanger 7, the boiler feedwater input terminal of cryogenic heat exchanger 7 by boiler feed pump 6
Connect drum 20；The conduction oil output terminal of the conduction oil input terminal connection heating furnace 16 of cryogenic heat exchanger 7, cryogenic heat exchanger 7
Conduction oil output terminal connects the conduction oil input terminal of heating furnace 16；The saturated vapor output terminal of drum 20 connects pressure and temperature reducing at the same time
The saturated vapor input terminal of device 14 and steam superheater 15, the desuperheating water input terminal connection boiler feedwater of reducing-and-cooling plant 14
Pump 6 outlet conduits；The low-pressure steam output terminal connection low-pressure steam user of reducing-and-cooling plant 14；Steam superheater 15 sets dry put out
Stove recyclegas entrance, the high pressure superheated steam output terminal connection high-voltage power user of steam superheater 15, steam superheater 15
High pressure superheated steam output terminal pass through decompressor 17 and connect vapor heat exchanger A 18 and vapor heat exchanger B 19.
The vapor heat exchanger A 18 sets raw coke oven gas entry and exit pressure difference monitoring device, and vapor heat exchanger A 18 and steam change
Set switching valve on raw coke oven gas input channel between hot device B 19, on the tedge 8 of vapor heat exchanger A 18, down-comer 9 respectively
If block valve；Raw coke oven gas entry and exit pressure difference monitoring device and switching valve, block valve interlocked control.
The lower section of the hot precipitator 2 sets ash cellar 12.
The heating furnace 16 uses heated by gas.
The vapor heat exchanger A 18, the sewerage output terminal of vapor heat exchanger B 19 are connected by periodical blowdown expander 10
Connect sewage well 11.
A kind of technical process of coal oven dithio-gas high temperature section heat efficient system for reclaiming of the present invention is as follows：
1) 650~750 DEG C of raw coke oven gas from coke oven enter gas collecting tube by the tedge of coke oven 1, enter after flue dust aggregation
Hot precipitator 2 carries out dedusting, and the raw coke oven gas after dedusting exchanges heat into waste heat boiler 13, and the lime-ash after dedusting enters ash cellar
Outer row after 12；
2) the vapor heat exchanger A 18 that raw coke oven gas enters in waste heat boiler 13 exchanges heat, and keeps raw coke oven gas inlet temperature about
For 650 DEG C, 25~40m/s of mean flow rate, 330 DEG C of heat exchanger tube tube wall temperature；After heat exchange low temperature raw coke oven gas enter other workshop sections into
Row low-temperature zone heat recovery；
3) at the same time, the temperature after deaerated feedwater pump 4 enters oxygen-eliminating device 5 of the room temperature demineralized water in sweet-water tank 3 reaches 104
DEG C, 104 DEG C of deaerated feedwater enters cryogenic heat exchanger 7 through boiler feed pump 6 all the way, the 300 DEG C of heat conduction produced with heating furnace 16
Temperature reaches 210 DEG C after oil heat exchange；Another way is sent to reducing-and-cooling plant 14 and is used as desuperheating water；
4) after 210 DEG C of boiler feedwater enters drum 20, enter vapor heat exchanger A 18 through down-comer 9, handed over by heat
Change, become through tedge 8 to enter in drum 20 after steam water interface and carry out vapor-liquid separation, the high temperature and pressure saturated vapor of generation
(10~13MPa of steam pressure, 311~331 DEG C of vapor (steam) temperature) send paramount pressure after being overheated into steam superheater 15
Electric user, be sent into vapor heat exchanger A 18 after being depressurized into decompressor 17, vapor heat exchanger B 19 is burnt, or enter and subtract
Warm decompressor 14 is sent to each low-pressure steam user after carrying out desuperheat, decompression；
5) monitor the raw coke oven gas inlet outlet pressure differential of vapor heat exchanger A 18 on-line, automatically switch when pressure difference reaches 1.5KPa
To vapor heat exchanger B 19, the steam/water circulating process of vapor heat exchanger B 19 is identical with vapor heat exchanger A 18；At the same time,
Take in the high pressure superheated steam of the generation of steam superheater 15 all the way, producing 550 DEG C of low-pressure superheated steams through decompressor 17 leads to
Enter in vapor heat exchanger A 18 and start on-line decoking, when stopping when product is clean water of burning that vapor heat exchanger A 18 is discharged is burnt
It is burnt；
6) sewerage that waste heat boiler 13 produces in process of production, sewage well 11 is discharged into through periodical blowdown expander 10.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of coal oven dithio-gas heat recovery system free of discontinuities, it is characterised in that including hot precipitator, waste heat boiler, low
Warm heat exchanger, oxygen-eliminating device, sweet-water tank, heating furnace, reducing-and-cooling plant, steam superheater and decompressor；The waste heat pot
Vapor heat exchanger A, the vapor heat exchanger B that stove is connected by drum and respectively by tedge, down-comer and drum；Hot precipitator
Raw coke oven gas input terminal connection coke oven gas collecting tube, hot precipitator raw coke oven gas output terminal connection waste heat boiler in steam change
Hot device A and vapor heat exchanger B；The demineralized water that the demineralized water output terminal of sweet-water tank pumps connection oxygen-eliminating device by deaerated feedwater inputs
End, the boiler feedwater input terminal of oxygen-eliminating device connect the boiler feedwater output terminal of cryogenic heat exchanger by boiler feed pump, and low temperature changes
The boiler feedwater input terminal connection drum of hot device；The conduction oil output of the conduction oil input terminal connection heating furnace of cryogenic heat exchanger
End, the conduction oil input terminal of the conduction oil output terminal connection heating furnace of cryogenic heat exchanger；The saturated vapor output terminal of drum is at the same time
Connect the saturated vapor input terminal of reducing-and-cooling plant and steam superheater, the desuperheating water input terminal connection pot of reducing-and-cooling plant
Stove feed pump outlet conduit；The low-pressure steam output terminal connection low-pressure steam user of reducing-and-cooling plant；Steam superheater sets dry
Stove recyclegas entrance is put out, the high pressure superheated steam output terminal of steam superheater connects high-voltage power user, steam superheater
High pressure superheated steam output terminal connects vapor heat exchanger A and vapor heat exchanger B by decompressor.
A kind of 2. coal oven dithio-gas heat recovery system free of discontinuities according to claim 1, it is characterised in that the steam
Heat exchanger A sets raw coke oven gas entry and exit pressure difference monitoring device, the raw coke oven gas input pipe between vapor heat exchanger A and vapor heat exchanger B
Set switching valve on road, block valve is set respectively on the tedge of vapor heat exchanger A, down-comer；Raw coke oven gas entry and exit pressure difference monitoring dress
Put and switching valve, block valve interlocked control.
A kind of 3. coal oven dithio-gas heat recovery system free of discontinuities according to claim 1, it is characterised in that the high temperature
Ash cellar is set below deduster.
A kind of 4. coal oven dithio-gas heat recovery system free of discontinuities according to claim 1, it is characterised in that the heating
Stove uses heated by gas.
A kind of 5. coal oven dithio-gas heat recovery system free of discontinuities according to claim 1, it is characterised in that the steam
Heat exchanger A, the sewerage output terminal of vapor heat exchanger B connect sewage well by periodical blowdown expander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405018.XA CN107965748A (en) | 2017-12-22 | 2017-12-22 | A kind of coal oven dithio-gas heat recovery system free of discontinuities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405018.XA CN107965748A (en) | 2017-12-22 | 2017-12-22 | A kind of coal oven dithio-gas heat recovery system free of discontinuities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107965748A true CN107965748A (en) | 2018-04-27 |
Family
ID=61995827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711405018.XA Pending CN107965748A (en) | 2017-12-22 | 2017-12-22 | A kind of coal oven dithio-gas heat recovery system free of discontinuities |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590789A (en) * | 2018-07-05 | 2018-09-28 | 中冶焦耐(大连)工程技术有限公司 | A kind of coal oven dithio-gas sensible heat and red burnt sensible heat cogeneration technique and system |
| CN109611820A (en) * | 2018-12-14 | 2019-04-12 | 江西庞泰环保股份有限公司 | A kind of relieving haperacidity waste heat recovery apparatus and method |
| CN111187139A (en) * | 2020-03-06 | 2020-05-22 | 中冶焦耐(大连)工程技术有限公司 | Industrial naphthalene oil gas cooling process and system for byproduct steam |
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| CN204079875U (en) * | 2014-09-29 | 2015-01-07 | 南京竣业过程机械设备有限公司 | A kind of new Type Coke Oven raw gas waste-heat recovery device |
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| CN107286961A (en) * | 2017-07-21 | 2017-10-24 | 中冶焦耐(大连)工程技术有限公司 | A kind of coal oven dithio-gas high temperature section heat high efficiente callback device |
| CN207741061U (en) * | 2017-12-22 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of coal oven dithio-gas heat recovery system free of discontinuities |
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| CN103436271A (en) * | 2013-08-30 | 2013-12-11 | 常州江南电力节能科技有限公司 | System for recycling raw gas afterheat of coke oven |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590789A (en) * | 2018-07-05 | 2018-09-28 | 中冶焦耐(大连)工程技术有限公司 | A kind of coal oven dithio-gas sensible heat and red burnt sensible heat cogeneration technique and system |
| CN109611820A (en) * | 2018-12-14 | 2019-04-12 | 江西庞泰环保股份有限公司 | A kind of relieving haperacidity waste heat recovery apparatus and method |
| CN111187139A (en) * | 2020-03-06 | 2020-05-22 | 中冶焦耐(大连)工程技术有限公司 | Industrial naphthalene oil gas cooling process and system for byproduct steam |
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Application publication date: 20180427 |