CN109580297A - A kind of coke oven flue gas detection device and detection method - Google Patents
A kind of coke oven flue gas detection device and detection method Download PDFInfo
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- CN109580297A CN109580297A CN201810718042.7A CN201810718042A CN109580297A CN 109580297 A CN109580297 A CN 109580297A CN 201810718042 A CN201810718042 A CN 201810718042A CN 109580297 A CN109580297 A CN 109580297A
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- 239000003546 flue gas Substances 0.000 title claims abstract description 95
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000000571 coke Substances 0.000 title claims abstract description 90
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 130
- 238000007689 inspection Methods 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000005201 scrubbing Methods 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 3
- 230000006399 behavior Effects 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 14
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- -1 flue gas nitrogen oxides Chemical class 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention discloses a kind of coke oven flue gas detection device and detection method, including coke oven regenerator, coke oven regenerator connects collection air pump by gas collecting tube, collect the other end and the uniform and stable room of gas of air pump, the uniform and stable room of gas is connected with the vacuum pump vacuumized and connects, and the uniform and stable room of gas also passes through piping connection with flue gas inspection device;Valve is respectively equipped between coke oven regenerator and gas collecting tube, collection air pump and the uniform and stable room of gas, the uniform and stable room of gas and the uniform and stable room of vacuum pump, gas and coke oven flue gas detection device.Stablize coke oven flue gas gas componant, improve coke oven flue gas measurement accuracy, realizes that the analysis of the multiple regenerative chamber flue gas emission situations of coke oven is compared or more time phase coke oven flue gas emission behaviours compare, improve the evaluation comparativity of coke oven flue gas detection.
Description
Technical field
The invention belongs to metallurgical coking production technical field, it is related to a kind of coke oven flue gas detection device and method.
Background technique
The fuel that coke-oven plant's coke oven uses irregularly switches over for coke-stove gas and blast furnace gas, in process of coking, meeting
Release a large amount of sulfide, nitrogen oxides and flue dust etc..Stack gases after heating gas burning pass through chimney outlet atmosphere,
Middle pollutant is mainly SO2, NOx, dust particle etc..
2012, China was put into effect " coking chemistry emission of industrial pollutants standard ", in the standard, clear stipulaties " from
From on January 1st, 2015, the discharge amount of conventional coke oven nitrogen oxides in effluent is no more than 500mg/m3, the discharge of sulfur dioxide
Amount is no more than 50mg/m3." new standard in coke oven flue gas nitrogen oxides and sulfur dioxide (SO2) emissions require it is stringenter, especially
It is to be no more than 150mg/m in line city emission limit nitrogen oxides such as " going up north wide "3, sulfur dioxide is no more than 30mg/m3。
Start to carry out the useless cigarette of coke oven for environmental requirement and to the social responsibility of environmental protection, government department and coke-oven plant
The detection of nitrogen oxides and sulfur dioxide in gas, including use is various offline, whether the discharge of online equipment monitoring pollution objects is up to standard,
But most of monitoring tapping equipment is installed at coke oven flue gas chimney, that is, flue gas finally collects emission point, by
It is made of in coke oven more regenerative chamber gas-fireds, therefore this can not the practical flue gas emission situation of accurate evaluation coke oven.In addition,
There is part invention device to carry out flue gas measurement at coke oven regenerator flue, as " transverse direction of coke oven burning waste gas is oxygen-containing for patent
Amount detecting device (CN 201387423Y) ", " a kind of coke oven flue gas oxygen content and nitrous oxides concentration detection system (CN
205280438 U) ", the method (106932349 U of CN) of oven wall of coke oven carbonization chamber blowby " a kind of detect ", but coke-stove gas
Periodically there is commutation in burning, the ignition temperature in quirk is caused to change, and nitrous oxides concentration is mainly in coke oven flue gas
Thermal NO, as coke oven flue gas temperature change difference is more obvious, so either online still offline inspection is set
Standby, final detected value is moment flue gas content, and the coke oven flue gas value detected will appear maximum value and minimum value, wherein most
Before big value appears in ascending air commutation, before minimum value appears in down current commutation, if on-line monitoring equipment detection data
Being depicted as two dimensional plot will appear the concussion distribution situation with wave crest and trough, as shown in Figure 1.
Coke oven flue gas discharge testing result and detection time and commutation cycle, there are much relations.Often appear in rising
Airflow-reversing stage testing result is exceeded, but practical coke oven flue gas pollutant discharge amount is lower, the inspection of down current commutation phase
It is up to standard to survey result, but practical coke oven flue gas pollutant emission is higher, can not accurately measure coke oven flue gas emission behaviour.
Summary of the invention
For the defect of currently available technology, it is an object of the invention to provide in a kind of stable measurement coke oven some cycles
Flue gas emission situation system and detection method, and then preferably evaluate coke oven flue gas emission behaviour, stablize coke oven flue gas gas at
Point, coke oven flue gas measurement accuracy is improved, the analysis of the realization multiple regenerative chamber flue gas emission situations of coke oven is compared or more times
Stage coke oven flue gas emission behaviour directly compares, and eventually by technique adjustment or scrap build, reduces oven pollutants discharge,
Realize coke oven flue gas qualified discharge.
Object of the present invention is to what is realized by following technical solution:
A kind of coke oven flue gas detection device, it is characterised in that: including coke oven regenerator, coke oven regenerator is connected by gas collecting tube
Collection air pump is connect, the other end and the uniform and stable room of gas of air pump are collected, the uniform and stable room of gas is connected with the vacuum pump vacuumized and connects,
The uniform and stable room of gas also passes through piping connection with flue gas inspection device;Coke oven regenerator and gas collecting tube, collection air pump and gas are equal
It is respectively equipped between even equalization chamber, the uniform and stable room of gas and the uniform and stable room of vacuum pump, gas and coke oven flue gas detection device
Valve.
The coke oven flue gas detection device is controlled by automatic electrical control system.
A kind of coke oven flue gas detection method, it is characterised in that: be completely in the beginning shape of closing in detection device and valve
State successively opens valve, vacuum pump between vacuum pump and the uniform and stable room of gas first, uniformly steady to gas using aspiration pump
Determine room to be vacuumized, until pressure index ξ reaches vacuum values;The uniform and stable room evacuated pressure value of gas 0.1KPa~
1KPa, and then the valve between vacuum pump, vacuum pump and the uniform and stable room of gas is successively closed, further successively open collection air pump
Valve, gas collecting tube series of valves, collection air pump between the uniform and stable room of gas, start to carry out scrubbing operations, utilize collection air pump
Coke oven flue gas is evacuated to the uniform and stable interior of gas, until pressure index ξ reaches maximum pressure tolerance range value, maximum bears pressure
Power successively closes valve between collection air pump and the uniform and stable room of gas, gas collecting tube series of valves in 1.0KPa~1000KPa,
Repeat the uniform and stable room of gas to vacuumize, after charge operation, reaches maximum again to the uniform and stable chamber pressure index ξ of gas
Pressure bearing value range opens the valve between flue gas inspection device and the uniform and stable room of gas, using flue gas inspection device into
The measurement of row coke oven flue gas.
The pressure index ξ is calculated according to the following formula:
Wherein, inlet velocity υ0, exit velocity υ1, inlet temperature T0, outlet temperature T1, gas density ρ, flowing time t, R
For ideal gas constant 8.314Jmol-1·K-1, Pe=standard atmospheric pressure, Vm, a, b be pilot process constant.
The coke oven flue gas detection method can be measured the flue gas in the single ventilation cycle of coke oven regenerator,
Flue gas in the multiple ventilation cycles of coke oven regenerator can be measured, mainly pass through the valve and aspiration pump on collecting pipe
It is controlled, whole process is automatically performed operation under automatic electrical control system effect.
Of the invention a kind of coke oven flue gas detection device and method, stablize coke oven flue gas gas componant, improve coke oven flue gas
Measurement accuracy realizes that the analysis of the multiple regenerative chamber flue gas emission situations of coke oven is compared or more time phase coke oven flue gas are arranged
To one's heart's content condition compares, and improves the evaluation comparativity of coke oven flue gas detection.
Detailed description of the invention
Fig. 1 coke oven flue gas detection device schematic diagram,
Fig. 2 coke oven flue gas detects electric automatic control flow chart.
Wherein, 1. coke oven regenerator;2. gas collecting tube series of valves;3. gas collecting tube;4. collecting air pump;5. collecting air pump and gas being equal
Valve between even equalization chamber;6. the uniform and stable room of gas;7. the valve between vacuum pump and the uniform and stable room of gas;8 is electrical
Control system;9. vacuum pump;10. flue gas inspection device;Valve between 11 flue gas inspection devices and the uniform and stable room of gas.
Specific embodiment
It is illustrated combined with specific embodiments below:
Embodiment 1
A kind of coke oven flue gas detection device is that connect with coke oven regenerator 1 includes: gas collecting tube series of valves 2, gas collecting tube
3, aspiration pump 4 collects the valve 5 between air pump and the uniform and stable room of gas, and the uniform and stable room 6 of gas, vacuum pump is uniform with gas
Valve 7 between equalization chamber, automatic electrical control system 8, vacuum pump 9, flue gas inspection device 10, flue gas inspection device and gas
Valve 11 between uniform and stable room.
The coke oven flue gas detection device is taken out the flue gas in coke oven regenerator by the collection air pump 4 that gas collecting tube 3 connects
To the uniform and stable room 6 of gas, set up series of valves 2, gas collection separately on the gas collecting tube that connect by gas collecting tube 3 with coke oven regenerator 1
The other end of pump 4 is connect with the uniform and stable room 6 of gas, and the valve 5 being equipped between collection air pump and the uniform and stable room of gas;Gas
Uniform and stable room 6 is connected with the vacuum pump 9 vacuumized, and the pipeline of connection is equipped between vacuum pump and the uniform and stable room of gas
Valve 7 carries out the vacuum pumping of the uniform and stable room 6 of gas by vacuum pump 9;The uniform and stable room 6 of gas is gone back and flue gas inspection
Device 10 is carried out by piping connection, and by the valve 11 between the flue gas inspection device on pipeline and the uniform and stable room of gas
Control, package unit are automatically performed operation under the effect of automatic electrical control system 8, as shown in Figure 2.
A kind of coke oven flue gas detection method is characterized in that being completely in the beginning state of closing in equipment and valve, first according to
The secondary valve 7 opened between vacuum pump and the uniform and stable room of gas, vacuum pump 9, using vacuum pump 9 to the uniform and stable room of gas 6
It is vacuumized, until pressure index ξ1Reach 0.5KPa, and then it is uniform and stable successively to close vacuum pump 9, vacuum pump and gas
Valve 7 between room, further successively open collection air pump and the uniform and stable room of gas between valve 5, gas collecting tube series of valves
2, collect air pump 4, start to carry out scrubbing operations, coke oven flue gas is evacuated in the uniform and stable room 6 of gas using collection air pump 4.Until pressure
Power index ξ2Reach 100KPa, successively the valve 5 between closing collection air pump and the uniform and stable room of gas, gas collecting tube series of valves 2,
Repeat the uniform and stable room 6 of gas to vacuumize, after charge operation, to the uniform and stable 6 pressure index ξ of room of gas2Reach again
100KPa opens the valve 11 between flue gas inspection device and the uniform and stable room of gas, carries out coke using flue gas inspection device 10
Kiln gas measurement, electric control system control flow are as shown in Figure 2.Coke oven flue gas detection device is will be burnt by collection air pump 4
Flue gas in furnace regenerative chamber 1 is pumped into the uniform and stable room 6 of gas collection, is controlled, is realized within a certain period of time by automatic 1 valve of electricity
Flue gas is riddled within the scope of the maximum pressure-bearing 1000KPa in the uniform and stable room 6 of gas.
The embodiment is measured to the flue gas in the single ventilation cycle of single coke oven regenerator 1.
Embodiment 2
A kind of coke oven flue gas detection device includes coke oven regenerator 1, gas collecting tube series of valves 2, gas collecting tube 3, aspiration pump 4,
Collect the valve 5 between air pump and the uniform and stable room of gas, the uniform and stable room 6 of gas, between vacuum pump and the uniform and stable room of gas
Valve 7, automatic electrical control system 8, vacuum pump 9, flue gas inspection device 10, flue gas inspection device and the uniform and stable room of gas
Between valve 11.
The coke oven flue gas detection device is taken out the flue gas in coke oven regenerator by the collection air pump 4 that gas collecting tube 3 connects
To the uniform and stable room 6 of gas, set up series of valves 2, gas collection separately on the gas collecting tube that connect by gas collecting tube 3 with coke oven regenerator 1
The other end of pump 4 is connect with the uniform and stable room 6 of gas, and the valve 5 being equipped between collection air pump and the uniform and stable room of gas;Gas
Uniform and stable room 6 is connected with the vacuum pump 9 vacuumized, and the pipeline of connection is equipped between vacuum pump and the uniform and stable room of gas
Valve 7 carries out the vacuum pumping of the uniform and stable room 6 of gas by vacuum pump 9;The uniform and stable room 6 of gas is gone back and flue gas inspection
Device 10 is carried out by piping connection, and by the valve 11 between the flue gas inspection device on pipeline and the uniform and stable room of gas
Control, package unit are automatically performed operation under the effect of automatic electrical control system 8, as shown in Figure 2.
A kind of coke oven flue gas detection method is characterized in that being completely in the beginning state of closing in equipment and valve, first according to
The secondary valve 7 opened between vacuum pump and the uniform and stable room of gas, vacuum pump 9, using vacuum pump 9 to the uniform and stable room of gas 6
It is vacuumized, until pressure index ξ1Reach 0.1KPa, and then it is uniform and stable successively to close vacuum pump 9, vacuum pump and gas
Valve 7 between room, further successively open collection air pump and the uniform and stable room of gas between valve 5, gas collecting tube series of valves
2, collect air pump 4, start to carry out scrubbing operations, coke oven flue gas is evacuated in the uniform and stable room 6 of gas using collection air pump 4.Until pressure
Power index ξ2Reach 1000KPa, successively the valve 5 between closing collection air pump and the uniform and stable room of gas, gas collecting tube series of valves
2, repeat the uniform and stable room 6 of gas and vacuumize, after charge operation, to the uniform and stable 6 pressure index ξ of room of gas2It reaches again
To 1000KPa, the valve 11 between flue gas inspection device and the uniform and stable room of gas is opened, is carried out using flue gas inspection device 10
Coke oven flue gas measurement, electric control system control flow are as shown in Figure 2.Coke oven flue gas detection device is will by collection air pump 4
Flue gas in coke oven regenerator 1 is pumped into the uniform and stable room 6 of gas collection, is controlled, is realized in certain time by automatic 1 valve of electricity
It is interior to riddle flue gas within the scope of the maximum pressure-bearing 2MP in the uniform and stable room 6 of gas.
The embodiment is that the flue gas in two ventilation cycles to entire coke oven regenerator 1 is measured.
Claims (3)
1. a kind of coke oven flue gas detection device, it is characterised in that: including coke oven regenerator, coke oven regenerator is connected by gas collecting tube
Collect air pump, collect the other end and the uniform and stable room of gas of air pump, the uniform and stable room of gas is connected with the vacuum pump vacuumized and connects, gas
The uniform and stable room of body also passes through piping connection with flue gas inspection device;Coke oven regenerator and gas collecting tube, collection air pump and gas are uniform
Valve is respectively equipped between equalization chamber, the uniform and stable room of gas and the uniform and stable room of vacuum pump, gas and coke oven flue gas detection device
Door.
2. coke oven flue gas detection device according to claim 1, it is characterised in that: the coke oven flue gas detection device by
Automatic electrical control system control.
3. a kind of detection method using coke oven flue gas detection device described in claim 1, it is characterised in that include the following steps:
It is completely in the beginning state of closing in detection device and valve, is successively opened between vacuum pump and the uniform and stable room of gas first
Valve, vacuum pump, the uniform and stable room of gas is vacuumized using aspiration pump, until pressure index ξ reaches vacuum values;Gas
The uniform and stable room evacuated pressure value of body is in 0.1KPa~1KPa, and then it is uniformly steady successively to close vacuum pump, vacuum pump and gas
Determine the valve between room, further successively open collection air pump and the uniform and stable room of gas between valve, gas collecting tube series of valves,
Collect air pump, start to carry out scrubbing operations, coke oven flue gas is evacuated to the uniform and stable interior of gas using collection air pump, until pressure index
ξ reaches maximum pressure tolerance range value, and maximum bears pressure in 1.0KPa~1000KPa, successively closes collection air pump and gas is equal
Valve, gas collecting tube series of valves between even equalization chamber repeat the uniform and stable room of gas and vacuumize, after charge operation, to
The uniform and stable chamber pressure index ξ of gas reaches maximum pressure tolerance range value again, opens flue gas inspection device and gas is uniform
Valve between equalization chamber carries out coke oven flue gas measurement using flue gas inspection device.
The pressure index ξ is calculated according to the following formula:
Wherein, inlet velocity υ0, exit velocity υ1, inlet temperature T0, outlet temperature T1, gas density ρ, flowing time t, R be reason
Think gas constant 8.314Jmol-1·K-1, Pe=standard atmospheric pressure, Vm, a, b be pilot process constant.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113532965A (en) * | 2021-06-28 | 2021-10-22 | 鞍钢集团北京研究院有限公司 | Coking gas collection apparatus and method |
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CN201207023Y (en) * | 2008-05-16 | 2009-03-11 | 韩琼 | On-line measurement system for boiler discharging flue gas field |
CN101526495A (en) * | 2009-04-07 | 2009-09-09 | 北京三博中自科技有限公司 | Method for detecting transverse oxygen content of burnt gas of coke oven and realizing device thereof |
CN102680285A (en) * | 2012-06-01 | 2012-09-19 | 上海化工研究院 | Gas on-line sampling and pretreatment method and equipment for intermittent circulating gas producing technology |
CN208547520U (en) * | 2018-07-03 | 2019-02-26 | 鞍钢股份有限公司 | A kind of coke oven flue gas detection device |
-
2018
- 2018-07-03 CN CN201810718042.7A patent/CN109580297A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN201207023Y (en) * | 2008-05-16 | 2009-03-11 | 韩琼 | On-line measurement system for boiler discharging flue gas field |
CN101526495A (en) * | 2009-04-07 | 2009-09-09 | 北京三博中自科技有限公司 | Method for detecting transverse oxygen content of burnt gas of coke oven and realizing device thereof |
CN102680285A (en) * | 2012-06-01 | 2012-09-19 | 上海化工研究院 | Gas on-line sampling and pretreatment method and equipment for intermittent circulating gas producing technology |
CN208547520U (en) * | 2018-07-03 | 2019-02-26 | 鞍钢股份有限公司 | A kind of coke oven flue gas detection device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113532965A (en) * | 2021-06-28 | 2021-10-22 | 鞍钢集团北京研究院有限公司 | Coking gas collection apparatus and method |
CN113532965B (en) * | 2021-06-28 | 2024-06-14 | 鞍钢集团北京研究院有限公司 | Coking gas collection apparatus and method |
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