CN104178229A - Gas purification system - Google Patents
Gas purification system Download PDFInfo
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- CN104178229A CN104178229A CN201410377929.6A CN201410377929A CN104178229A CN 104178229 A CN104178229 A CN 104178229A CN 201410377929 A CN201410377929 A CN 201410377929A CN 104178229 A CN104178229 A CN 104178229A
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- gas
- electrical tar
- tar precipitator
- oxygen
- oxygen analyzer
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Abstract
The invention discloses a gas purification system. An oxygen analyzer is additionally arranged on a gas pipeline; and when the oxygen content of raw gas is more than a set value, the raw gas is switched into a deoxidation system for deoxidation treatment till the oxygen volume fraction of the raw gas meets the requirement and then enters an electrical tar precipitator for tar removal. The gas purification system disclosed by the invention provides the guarantee for enterprises on reliability of precipitating tar by adopting the electrical tar precipitator through the combined application of the oxygen analyzer, the deoxidation system and an automatic alarm device in the electrical tar precipitating work section of coke oven gas purification, thereby better serving the enterprises.
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 a large amount of coal gas, and owing to containing a large amount of tar and naphthalene in coal gas, the coal-tar middle oil coking of coal gas in winter and naphthalene crystal are separated out, cause gas line to stop up, carry and affect coal gas, for addressing this problem, add electrical tar precipitator, tar and naphthalene in trapping coal gas.Honeycomb fashion electrical tar precipitator is through the application in Lan Tan enterprise raw gas purifying for many years, also exposed day by day of its problem, the main problem existing is, oxygen volume fraction in coal gas has caused threat to its safe handling, because coal gas is inflammable and explosive gas, if the oxygen level in coal gas exceedes 0.5%, will in electrical tar precipitator, will blast, for this problem, this research has mainly carried out improving design to existing gas cleaning system.
Summary of the invention
In order to address the above problem, the invention provides a kind of gas cleaning system, on gas line, add oxygen analyzer, in the time that in raw gas, oxygen level exceedes set(ting)value, switching coal gas enters deoxygenation system and carries out deoxidation treatment, until oxygen volume fraction reaches requirement in raw gas, enter electrical tar precipitator and carry out tar and remove.
Technical scheme of the present invention is: a kind of gas cleaning system, comprise coke oven, primary cooler, oxygen analyzer, deoxygenation system and electrical tar precipitator, described deoxygenation system comprises the first deoxygenator and the second deoxygenator, input terminus and the output terminal of the first deoxygenator and the second deoxygenator are provided with valve, the output terminal that produces the coke oven of raw gas connects the input terminus of primary cooler, the output terminal of described primary cooler respectively with the first oxygen analyzer, the input terminus of deoxygenation system and electrical tar precipitator is connected, the output terminal of described deoxygenation system connects respectively the second oxygen analyzer, the input terminus of torch and electrical tar precipitator is connected.
Further, the input terminus of described electrical tar precipitator comprises first input end and the second input terminus, on first input end and the second input terminus, is provided with valve.
Further, on described the first oxygen analyzer and the second oxygen analyzer, be provided with autoalarm.
Further, described electrical tar precipitator by gas blower with aseptic thionizer, Ammonic washing tower with wash benzene tower and be communicated with successively.
Further, through thionizer, Ammonic washing tower and wash benzene tower purify after coal gas part as firing tunnel in coking furnace, other enter gas chamber.
Further, in the time that the raw gas oxygen volume fraction through the first oxygen analyzer is less than set(ting)value, raw gas enters electrical tar precipitator; Otherwise raw gas enters deoxygenation system;
In the time that in the raw gas through the second oxygen analyzer, oxygen volume fraction is less than set(ting)value, raw gas enters electrical tar precipitator; Otherwise raw gas enters torch.
Further, described set(ting)value is 0.1%.
Beneficial effect of the present invention is: on gas line, increase oxygen analyzer, oxygen volume fraction in raw gas is carried out to real-time monitoring, by the use of combining of oxygen analyzer, deoxygenation system and electrical tar precipitator, improve coal gas security in purification, increase the consecutive production that electrical tar precipitator is in operation, because oxygen analyzer easily breaks down, before oxygen analyzer is placed in to electrical tar precipitator, for convenience detach, convenient maintenance and replacement.
Brief description of the drawings
Fig. 1 is structure diagram of the present invention.
Fig. 2 is process flow sheet of the present invention.
In accompanying drawing: 1, the first oxygen analyzer, 11, the second oxygen analyzer, 2, deoxygenation system, 21, the first deoxygenator, 22, the second deoxygenator, 3, electrical tar precipitator, 31, first input end, 32, the second input terminus.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
The present invention requires very high to the volume fraction of oxygen mainly for electrical tar precipitator 3 in the running of electrostatic precipitator, once exceeding 0.5%, oxygen volume fraction will explode, and too high oxygen volume fraction also can cause great destruction to subsequent technique, consider safety factors and improve gas quality, having proposed to increase the structure design of oxygen analyzer and deoxygenation system 2.
Referring to Fig. 1 and Fig. 2, a kind of gas cleaning system, comprise coke oven, primary cooler, oxygen analyzer, deoxygenation system 2 and electrical tar precipitator 3, the output terminal that produces the coke oven of raw gas connects the input terminus of primary cooler, the output terminal of primary cooler respectively with the input terminus of the first oxygen analyzer 1, the input terminus of deoxygenation system 2 is connected with the first input end 31 that valvular electrical tar precipitator 3 is set, deoxygenation system 2 comprises that input terminus and output terminal are provided with the first deoxygenator 21 and second deoxygenator 22 of valve, the output terminal of deoxygenation system 2 respectively with the input terminus of the second oxygen analyzer 11, the second input terminus 32 of the input terminus of torch and electrical tar precipitator 3 is connected, the second input terminus 32 of the input terminus of torch and electrical tar precipitator 3 is provided with valve, electrical tar precipitator 3 is by gas blower with aseptic thionizer, Ammonic washing tower with wash benzene tower and be communicated with successively, and the output terminal of washing benzene tower connects respectively the input terminus of coke oven and gas chamber.
In the time that the raw gas oxygen volume fraction through the first oxygen analyzer 1 is less than 0.1%, raw gas enters electrical tar precipitator 3, otherwise the autoalarm arranging on the first oxygen analyzer 1 gives the alarm, and raw gas enters deoxygenation system 2;
In the time that in the raw gas through the second oxygen analyzer 11, oxygen volume fraction is less than set(ting)value, raw gas enters electrical tar precipitator 3; Otherwise raw gas enters torch.
Original state, in native system, all valves are all in closing condition, the raw gas that the present invention produces coke oven drops to 80～120 DEG C of left and right through primary cooler temperature, detect through the first oxygen analyzer 1, when oxygen volume fraction is less than 0.1%, open electrical tar precipitator 3 first input end 31 valves, make to enter electrical tar precipitator 3 through the raw gas of primary cooler cooling, carry out removing of tar;
When oxygen volume fraction is more than or equal to 0.1%, report to the police through the autoalarm that is arranged on the first oxygen analyzer 1, close electrical tar precipitator 3 first input end 31 valves simultaneously, open deoxygenation system input terminus valve and output terminal valve, raw gas is imported to deoxygenation system and carry out oxygen removal, enter afterwards the second oxygen analyzer 11 and detect, in the time that oxygen volume fraction is less than 0.1%, open electrical tar precipitator 3 second input terminus 32 valves, enter electrical tar precipitator 3;
The raw gas that removes tar through electrical tar precipitator 3 imports successively thionizer, Ammonic washing tower, washes the follow-up purification sections such as benzene tower through gas blower, and the coal gas part after purification is as firing tunnel in coking furnace, and other enter gas chamber.
When carrying out after oxygen removal through deoxygenation system 2, oxygen volume fraction is still more than or equal to 0.1%, reports to the police through the autoalarm that is arranged on the second oxygen analyzer 11, closes electrical tar precipitator 3 second input terminus 32 valves simultaneously, open torch input terminus valve, enter torch.
The gas cleaning system that the present invention proposes has following beneficial effect: increase oxygen analyzer, oxygen volume fraction in raw gas is analyzed, when exceeding standard, oxygen level carries out automatic alarm, improve the security that electrical tar precipitator 3 is in operation, increase deoxygenation system, after the oxygen volume fraction in raw gas exceeds standard, raw gas is imported and in deoxygenation system, carries out oxygen and remove, and by the second oxygen analyzer 11, the raw gas after deoxidation is detected again, after oxygen volume fraction in raw gas is qualified, again coal gas is imported to the trapping of carrying out tar in electrical tar precipitator 3, increase the consecutive production that electrical tar precipitator 3 is in operation, because oxygen analyzer easily breaks down, therefore before oxygen analyzer is placed in to electrical tar precipitator 3, for convenience detach, maintenance and replacing.
The present invention, by the combined utilization of oxygen analyzer, deoxygenation system and autoalarm electrically trapped tar oil workshop section in coke oven gas purification, provides guarantee for enterprise adopts electrical tar precipitator 3 to trap tar reliability, and making gas cleaning system is better enterprises service.
Claims (7)
1. a gas cleaning system, it is characterized in that: comprise coke oven, primary cooler, oxygen analyzer, deoxygenation system (2) and electrical tar precipitator (3), described deoxygenation system (2) comprises the first deoxygenator (21) and the second deoxygenator (22), input terminus and the output terminal of the first deoxygenator (21) and the second deoxygenator (22) are provided with valve, the output terminal that produces the coke oven of raw gas connects the input terminus of primary cooler, the output terminal of described primary cooler respectively with the first oxygen analyzer (1), deoxygenation system (2) is connected with the input terminus of electrical tar precipitator (3), the output terminal of described deoxygenation system (2) connects respectively the second oxygen analyzer (11), torch is connected with the input terminus of electrical tar precipitator (3).
2. a kind of gas cleaning system according to claim 1, it is characterized in that: the input terminus of described electrical tar precipitator (3) comprises first input end (31) and the second input terminus (32), on first input end (31) and the second input terminus (32), be provided with valve.
3. a kind of gas cleaning system according to claim 2, is characterized in that: on described the first oxygen analyzer (1) and the second oxygen analyzer (11), be provided with autoalarm.
4. a kind of gas cleaning system according to claim 1, is characterized in that: described electrical tar precipitator (3) by gas blower with aseptic thionizer, Ammonic washing tower with wash benzene tower and be communicated with successively.
5. a kind of gas cleaning system according to claim 4, is characterized in that: through thionizer, Ammonic washing tower and wash benzene tower purify after coal gas part as firing tunnel in coking furnace, other enter gas chamber.
6. a kind of gas cleaning system according to claim 1 and 2, is characterized in that: in the time that the raw gas oxygen volume fraction through the first oxygen analyzer (1) is less than set(ting)value, raw gas enters electrical tar precipitator (3); Otherwise raw gas enters deoxygenation system (2);
In the time that in the raw gas through the second oxygen analyzer (11), oxygen volume fraction is less than set(ting)value, raw gas enters electrical tar precipitator (3); Otherwise raw gas enters torch.
7. a kind of gas cleaning system according to claim 6, is characterized in that: described set(ting)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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377929.6A CN104178229B (en) | 2014-08-01 | 2014-08-01 | A kind of gas cleaning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104178229A true CN104178229A (en) | 2014-12-03 |
| CN104178229B CN104178229B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886695A (en) * | 2016-05-09 | 2016-08-24 | 上海宝钢气体有限公司 | Deoxidation method and device for converter gas |
| CN112058498A (en) * | 2020-08-26 | 2020-12-11 | 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887690A (en) * | 2006-07-13 | 2007-01-03 | 本溪北方煤化工有限公司 | Sulfur-tolerant deoxygenation method for low temperature methanol cleaning process |
-
2014
- 2014-08-01 CN CN201410377929.6A patent/CN104178229B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887690A (en) * | 2006-07-13 | 2007-01-03 | 本溪北方煤化工有限公司 | Sulfur-tolerant deoxygenation method for low temperature methanol cleaning process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886695A (en) * | 2016-05-09 | 2016-08-24 | 上海宝钢气体有限公司 | Deoxidation method and device for converter gas |
| 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 |
| CN112058498A (en) * | 2020-08-26 | 2020-12-11 | 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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| Publication number | Publication date |
|---|---|
| CN104178229B (en) | 2016-07-06 |
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Granted publication date: 20160706 Termination date: 20190801 |