CN104178229B - A kind of gas cleaning system - Google Patents
A kind of gas cleaning system Download PDFInfo
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- CN104178229B CN104178229B CN201410377929.6A CN201410377929A CN104178229B CN 104178229 B CN104178229 B CN 104178229B CN 201410377929 A CN201410377929 A CN 201410377929A CN 104178229 B CN104178229 B CN 104178229B
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- gas
- input
- oxygen analyzer
- tar precipitator
- electrical tar
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Abstract
The invention discloses a kind of gas cleaning system, gas-pipe line adds oxygen analyzer, when in raw gas, oxygen content exceedes setting value, switching coal gas enters deoxygenation system and carries out deoxidation treatment, until after in raw gas, oxysome fraction reaches requirement, enter electrical tar precipitator and carry out tar elimination, the present invention is by oxygen analyzer, deoxygenation system and autoalarm use in conjunction of electrically trapped tar oil workshop section in coke oven gas purification, adopt electrical tar precipitator trapping tar reliability to provide guarantee for enterprise, make gas cleaning system better for enterprises service.
Description
Technical field
The invention belongs to technical field of coal chemical industry, relate to a kind of gas cleaning system.
Background technology
Process of coking produces substantial amounts of coal gas, owing to precipitating out containing substantial amounts of tar and naphthalene, the coal-tar middle oil coking of coal gas in winter and naphthalene crystal in coal gas, cause gas-pipe line to block, and affect coal gas conveying, for solving this problem, add electrical tar precipitator, trap the tar in coal gas and naphthalene.Honeycomb fashion electrical tar precipitator is through the application in semi-coke enterprise raw gas purifying for many years, its problem also exposed day by day, the problem being primarily present is, its safe handling is caused threat by the oxysome fraction in coal gas, because coal gas is inflammable and explosive gas, if the oxygen content in coal gas is more than 0.5%, will will blast in electrical tar precipitator, for this problem, existing gas cleaning system has mainly been carried out Curve guide impeller by this research.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of gas cleaning system, gas-pipe line adds oxygen analyzer, when in raw gas, oxygen content exceedes setting value, switching coal gas enters deoxygenation system and carries out deoxidation treatment, until oxysome fraction reaches requirement in raw gas, enter electrical tar precipitator and carry out tar elimination.
The technical scheme is that a kind of gas cleaning system, including coke oven, primary cooler, oxygen analyzer, deoxygenation system and electrical tar precipitator, described deoxygenation system includes the first degasifier and the second degasifier that are arranged in parallel, input and the outfan of the first degasifier and the second degasifier are provided with valve, the outfan producing the coke oven of raw gas connects the input of primary cooler, the outfan of described primary cooler respectively with the first oxygen analyzer, the input of deoxygenation system and electrical tar precipitator connects, the outfan of described deoxygenation system connects the second oxygen analyzer respectively, torch is connected with the input of electrical tar precipitator, described first oxygen analyzer and the second oxygen analyzer are provided with autoalarm.When the raw gas oxysome fraction through the first oxygen analyzer is less than setting value, raw gas enters electrical tar precipitator；Otherwise, raw gas enters deoxygenation system；When in the raw gas through the second oxygen analyzer, oxysome fraction is less than setting value, raw gas enters electrical tar precipitator；Otherwise, raw gas enters torch.
Further, the input of described electrical tar precipitator includes first input end and the second input, first input end and be provided with valve on the second input.
Further, described electrical tar precipitator by aerator and aseptic desulfurizing tower, Ammonic washing tower and is washed benzene column and is sequentially communicated.
Further, through desulfurizing tower, Ammonic washing tower and wash benzene column purify after coal gas partly as firing tunnel in coking furnace, other enter gas chamber.
Further, described setting value is 0.1%.
The beneficial effects of the present invention is: on gas-pipe line, increase oxygen analyzer, oxysome fraction in raw gas is carried out real-time monitoring, by being used in combination of oxygen analyzer, deoxygenation system and electrical tar precipitator, improve coal gas safety in purification, add the consecutive production that electrical tar precipitator is in operation, because oxygen analyzer easily breaks down, before oxygen analyzer is placed in electrical tar precipitator, convenient dismounting, convenient maintenance and replacement.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the process chart of the present invention.
In accompanying drawing: 1, the first oxygen analyzer, the 11, second oxygen analyzer, 2, deoxygenation system, the 21, first degasifier, the 22, second degasifier, 3, electrical tar precipitator, 31, first input end, the 32, second input.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
Present invention is generally directed to electrical tar precipitator 3 and in the running of electrostatic precipitator, the volume fraction of oxygen is required very high, oxysome fraction is once will explode more than 0.5%, and subsequent technique be will also result in great destruction by too high oxysome fraction, consider safety factors and improve gas quality, it is proposed that increasing the structural design of oxygen analyzer and deoxygenation system 2.
Referring to Fig. 1 and Fig. 2, a kind of gas cleaning system, including coke oven, primary cooler, oxygen analyzer, deoxygenation system 2 and electrical tar precipitator 3, the outfan producing the coke oven of raw gas connects the input of primary cooler, the outfan of primary cooler respectively with the input of the first oxygen analyzer 1, the input of deoxygenation system 2 and the first input end 31 arranging valvular electrical tar precipitator 3 connect, deoxygenation system 2 includes input and outfan is respectively provided with valvular first degasifier 21 and the second degasifier 22, the outfan of deoxygenation system 2 respectively with the input of the second oxygen analyzer 11, the input of torch is connected with the second input 32 of electrical tar precipitator 3, the input of torch and the second input 32 of electrical tar precipitator 3 are provided with valve；Electrical tar precipitator 3 is by aerator and aseptic desulfurizing tower, Ammonic washing tower and washes benzene column and is sequentially communicated, and the outfan washing benzene column connects the input of coke oven and gas chamber respectively.
When, when the raw gas oxysome fraction of the first oxygen analyzer 1 is less than 0.1%, raw gas enters electrical tar precipitator 3, otherwise, the autoalarm that the first oxygen analyzer 1 is arranged sends alarm, and raw gas enters deoxygenation system 2；
When in the raw gas through the second oxygen analyzer 11, oxysome fraction is less than setting value, raw gas enters electrical tar precipitator 3；Otherwise, raw gas enters torch.
Original state, in native system, all valves are in closed mode, the raw gas that coke oven is produced by the present invention drops to about 80～120 DEG C through primary cooler temperature, detect through the first oxygen analyzer 1, when oxysome fraction is less than 0.1%, open electrical tar precipitator 3 first input end 31 valve, make the raw gas through primary cooler cooling enter electrical tar precipitator 3, carry out the elimination of tar；
When oxysome fraction is more than or equal to 0.1%, then the autoalarm through being arranged on the first oxygen analyzer 1 is reported to the police, simultaneously close off electrical tar precipitator 3 first input end 31 valve, open deoxygenation system input valve and outfan valve, raw gas is imported deoxygenation system and carries out oxygen removal, enter the second oxygen analyzer 11 afterwards and detect, when oxysome fraction is less than 0.1%, open electrical tar precipitator 3 second input 32 valve, enter electrical tar precipitator 3；
The raw gas removing tar through electrical tar precipitator 3 imports desulfurizing tower, Ammonic washing tower successively through aerator, washes the subsequent purification workshop sections such as benzene column, and the coal gas after purification is partly as firing tunnel in coking furnace, and other enter gas chamber.
After carrying out oxygen removal through deoxygenation system 2, oxysome fraction still above or equal to 0.1%, then the autoalarm through being arranged on the second oxygen analyzer 11 is reported to the police, and simultaneously closes off electrical tar precipitator 3 second input 32 valve, open torch input valve, enter torch.
The gas cleaning system that the present invention proposes has the advantages that increase oxygen analyzer, oxysome fraction in raw gas is analyzed, automatic alarm is carried out when oxygen content exceeds standard, improve the safety that electrical tar precipitator 3 is in operation, increase deoxygenation system, after the oxysome fraction in raw gas exceeds standard, raw gas is imported deoxygenation system carries out oxygen elimination, and by the second oxygen analyzer 11, the raw gas after deoxidation is detected again, when in raw gas oxysome fraction qualified after, coal gas is imported the trapping carrying out tar in electrical tar precipitator 3 again, add the consecutive production that electrical tar precipitator 3 is in operation, because oxygen analyzer easily breaks down, therefore before oxygen analyzer is placed in electrical tar precipitator 3, convenient dismounting, maintenance and replacing.
The present invention, by oxygen analyzer, deoxygenation system and autoalarm use in conjunction of electrically trapped tar oil workshop section in coke oven gas purification, adopts electrical tar precipitator 3 to trap tar reliability for enterprise and provides guarantee, makes gas cleaning system better for enterprises service.
Claims (5)
- null1. a gas cleaning system，It is characterized in that: include coke oven、Primary cooler、Oxygen analyzer、Deoxygenation system (2) and electrical tar precipitator (3)，Described deoxygenation system (2) includes the first degasifier (21) and the second degasifier (22) that are arranged in parallel，Input and the outfan of the first degasifier (21) and the second degasifier (22) are provided with valve，The outfan producing the coke oven of raw gas connects the input of primary cooler，The outfan of described primary cooler respectively with the first oxygen analyzer (1)、The input of deoxygenation system (2) and electrical tar precipitator (3) connects，The outfan of described deoxygenation system (2) connects the second oxygen analyzer (11) respectively、Torch is connected with the input of electrical tar precipitator (3)，Described first oxygen analyzer (1) and the second oxygen analyzer (11) are provided with autoalarm；When the raw gas oxysome fraction through the first oxygen analyzer (1) is less than setting value, raw gas enters electrical tar precipitator (3)；Otherwise, raw gas enters deoxygenation system (2)；When in the raw gas through the second oxygen analyzer (11), oxysome fraction is less than setting value, raw gas enters electrical tar precipitator (3)；Otherwise, raw gas enters torch.
- 2. a kind of gas cleaning system according to claim 1, it is characterized in that: the input of described electrical tar precipitator (3) includes first input end (31) and the second input (32), first input end (31) and be provided with valve on the second input (32).
- 3. a kind of gas cleaning system according to claim 1, it is characterised in that: described electrical tar precipitator (3) is by aerator and aseptic desulfurizing tower, Ammonic washing tower and washes benzene column and is sequentially communicated.
- 4. a kind of gas cleaning system according to claim 3, it is characterised in that: through desulfurizing tower, Ammonic washing tower with wash the coal gas after benzene column purifies partly as firing tunnel in coking furnace, other enter gas chamber.
- 5. a kind of gas cleaning system according to claim 1, it is characterised in that: described setting value is 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377929.6A CN104178229B (en) | 2014-08-01 | 2014-08-01 | A kind of gas cleaning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377929.6A CN104178229B (en) | 2014-08-01 | 2014-08-01 | A kind of gas cleaning system |
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| Publication Number | Publication Date |
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| CN104178229A CN104178229A (en) | 2014-12-03 |
| CN104178229B true CN104178229B (en) | 2016-07-06 |
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| CN201410377929.6A Expired - Fee Related CN104178229B (en) | 2014-08-01 | 2014-08-01 | A kind of gas cleaning system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105886695B (en) * | 2016-05-09 | 2017-08-29 | 上海宝钢气体有限公司 | A kind of method of deoxidation of coal gas of converter |
| CN112058498B (en) * | 2020-08-26 | 2022-11-22 | 包头钢铁（集团）有限责任公司 | Fault processing method for coal gas purification electric tar precipitator |
| CN114561222A (en) * | 2022-03-16 | 2022-05-31 | 青岛科信新能源技术有限公司 | Intelligent control system of biomass gasification power generation system |
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| CN100377990C (en) * | 2006-07-13 | 2008-04-02 | 本溪北方煤化工有限公司 | Sulfur-tolerant deoxygenation method for low temperature methanol cleaning process |
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