CN103157350A - Integrated crude benzene or tar tail gas absorption device and application thereof - Google Patents
Integrated crude benzene or tar tail gas absorption device and application thereof Download PDFInfo
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- CN103157350A CN103157350A CN2013100923553A CN201310092355A CN103157350A CN 103157350 A CN103157350 A CN 103157350A CN 2013100923553 A CN2013100923553 A CN 2013100923553A CN 201310092355 A CN201310092355 A CN 201310092355A CN 103157350 A CN103157350 A CN 103157350A
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Abstract
The invention discloses an integrated crude benzene or tar tail gas absorption device which consists of a storage tank (10) and a tail gas purification tower (3), and is characterized in that a rich oil discharge pipe (11) is arranged at the bottom of the storage tank (10); the tail gas purification tower (3), a tail gas purification pump (7) and a lean oil refilling pipe (9) are fixedly arranged on the top of the storage tank (10); a filler (5) is filled in the middle of the tail gas purification tower (3); a tail gas collecting pipe (8) is arranged below the filler (5); a wash oil spraying pipe is arranged above the filler (5); a mist catching layer (4) is arranged above the wash oil spraying pipe; an emptying pipe (1) of a flame arrester is arranged on the top of the tail gas purification tower (3); and an outlet of the tail gas purification tower (3) is connected with the wash oil spraying pipe. The device has the advantages of low recovery cost and wide application range.
Description
Technical field
The invention belongs to a kind of absorption plant and application, relate in particular to a kind of production, storage and loading apparatus to containing absorption plant and the application of crude benzol or tar tail gas.
Background technology
Traditional tail gas recycle purifier is to aspirate by blower fan to produce power, then after using relevant cleaning solution to carry out washing absorption by washer, tail gas effluxes after purifying.Above-mentioned technique exists that power consumption is large, high, the shortcomings such as fault rate is high, weak effect of investment, and system is in negative pressure state in addition, has increased the material evaporation amount of relevant basin, causes loss of material;
Patent CN101721890A uses Venturi tube to capture tail gas, and system is in negative pressure state, has increased the material evaporation amount of relevant basin, causes loss of material;
Patent CN101879398A is associating coke-oven plant crude benzene recovery device fully, washing oil after two sections oil-poor coolers of introducing crude benzol operation is as absorbing flushing liquor, spray in scrubbing tower, realized reclaiming clean tail gas, but only be suitable for crude benzene recovery device, the scope of application is narrower, and sprays washing oil and spray without circulation, directly return to the crude benzol operation and process, greatly increased the burden of crude benzol operation.
Summary of the invention
The present invention be directed to the shortcoming that above prior art exists, propose a kind of cost recovery low, the scope of application is large, can be used for device for absorbing tail gas and the application of production, storage and the loading apparatus of crude benzol, tar.
Device for absorbing tail gas of the present invention, it is comprised of storage tank and tail gas purification tower, it is characterized in that in the bottom of storage tank, the rich oil discharge pipe being arranged, top at storage tank is fixed with tail gas purification tower, tail gas clean-up pump and the oil-poor pipe of adding, middle part at tail gas purification tower is filled with filler, the exhaust collection pipe is arranged below filler, the washing oil spray line is arranged above filler, catch the mist layer on the washing oil spray line, the evacuated tube of spark arrester is housed at the tail gas clean-up top of tower, and the tail gas clean-up delivery side of pump is connected with the washing oil spray line.
Filler as above is that the filler range of choice is wider, can adopt to huddle the type filler, as Raschig ring, Pall ring, cascade ring etc., also can use regular type filler, and as perforated plate corrugated filler, wire packing etc., filler can be pottery, plastics or metal with material.
Filler as above is single or multiple lift.
Storage tank as above is horizontal tank.
Using method of the present invention is as follows:
(1) add oil-poorly in storage tank, filler is packed in tail gas purification tower, filler floor height 1-6m;
The tail gas that (2) will contain crude benzol, tar enters in tail gas purification tower to flowing from the exhaust collection pipe, start the tail gas clean-up pump, from the sprinkling that circulates downwards of washing oil spray line, wherein in tail gas purification tower, empty tower gas velocity is 0.3-1m/s with washing oil, and liquid-gas ratio is 2-25l/m
3, operating pressure is normal pressure, the washing oil temperature is 20-35 ℃;
(3) when in washing oil, benzene class content of material is greater than 2wt%, the rich oil that has absorbed benzene, naphthalene and other noxious material is sent the crude benzol recovery operation back to and is steamed and take off processing, reclaims valuable benzene and naphthalene, and discharging any waste liquor, do not add oil-poor simultaneously; Remove benzene, naphthalene and other organic incoagulability tail gas, by spark arrester and the evacuated tube discharging of tail gas clean-up top of tower.
As above oil-poor be tar washing oil or oil washing oil, the tar washing oil is the cut of 230-300 ℃ in high temperature coal-tar, the oil washing oil is light diesel fuel, distillates the cut that cuts after gasoline and kerosene during for oil rectifying.
The present invention compared with prior art has following advantage:
1, equipment integrated design, technique is simple, and is easy for installation, good absorbing effect;
2, simple to operate, practical, labour intensity is low;
3, device adopts atmospheric operation, accepts passively tail gas, then absorbs pollutant, effectively reduces exhaust emissions, has also reduced the loss of material such as volatile components in crude benzol, tar simultaneously;
4, absorb the flushing liquor washing oil from the crude benzol recovery operation, the washing oil that has absorbed benzene, naphthalene and other noxious material is sent the crude benzol recovery operation back to and is steamed and take off processing, and therefore, the device operating cost is low, does not need discharging any waste liquor, reclaims simultaneously the valuable substances such as benzene, naphthalene;
5, the device scope of application is wide, can be used for the production processes such as production, storage and entrucking of tar and crude benzol.
Description of drawings
Fig. 1 is structural representation of the present invention.
As shown in the figure, the 1-evacuated tube, the 2-spark arrester, 3-tail gas purification tower, 4-are caught the mist layer, 5-filler, 6-washing oil circulation pipe, 7-tail gas clean-up pump, 8-exhaust collection pipe, the oil-poor pipe of adding of 9-, 10-horizontal tank, 11-rich oil discharge pipe.
The specific embodiment
Embodiment 1
Device for absorbing tail gas is comprised of horizontal tank 10 and tail gas purification tower 3, in the bottom of horizontal tank 10, rich oil discharge pipe 11 is arranged, be fixed with tail gas purification tower 3 at the top of horizontal tank 10, tail gas clean-up pump 7 and the oil-poor pipe 9 of adding, be filled with individual layer Raschig ring filler 5 at the middle part of tail gas purification tower 3, exhaust collection pipe 8 is arranged below Raschig ring filler 5, washing oil spray line 6 is arranged above Raschig ring filler 5, catch mist layer 4 on washing oil spray line 6, at tail gas purification tower 3 tops, spark arrester 2 and evacuated tube 1 are housed, the outlet of tail gas clean-up pump 7 is connected with washing oil spray line 6.
The use of apparatus of the present invention is as follows:
(1) add the tar washing oil in horizontal tank 10, Raschig ring filler 5 is packed in tail gas purification tower 3, filler floor height 6m;
(2) be concentrated to exhaust collection pipe 8 from the tail gas of each storage tank of crude benzene recovery device, tar crude benzol each storage tank of tank field or tar crude benzol loading station tank car and enter that tail gas purification tower 3 is interior to flow to upper, start tail gas clean-up pump 7, washing oil is sprayed from washing oil spray line 6 circulation downwards, wherein the interior empty tower gas velocity of tail gas purification tower 3 is 1m/s, and liquid-gas ratio is 20l/m
3, operating pressure is normal pressure, the washing oil temperature is 35 ℃;
(3) when in washing oil, benzene class content of material is greater than 2wt%, the rich oil that has absorbed benzene, naphthalene and other noxious material is discharged from rich oil discharge pipe 11, sends the crude benzol recovery operation back to and steams and take off processing, reclaims valuable benzene and naphthalene, discharging any waste liquor, do not add oil-poor from the oil-poor pipe 9 of adding simultaneously; Remove benzene, naphthalene and other organic incoagulability tail gas, by spark arrester 2 and evacuated tube 1 discharging at tail gas purification tower 3 tops.
Embodiment 2
Regular mellapak packing 5 is packed in tail gas purification tower 3, filler floor height 3m; The interior empty tower gas velocity of tail gas purification tower 3 is 0.5m/s, and liquid-gas ratio is 10l/m
3, operating pressure is normal pressure, the washing oil temperature is 30 ℃.All the other are with embodiment 1.
Embodiment 3
Regular Lamb wave line 5 is packed in tail gas purification tower 3, filler floor height 1m; The interior empty tower gas velocity of tail gas purification tower 3 is 0.3m/s, and liquid-gas ratio is 5l/m
3, operating pressure is normal pressure, the washing oil temperature is 20 ℃.All the other are with embodiment 1.
Claims (8)
1. the absorption plant of integral type crude benzol or tar tail gas, it is comprised of storage tank (10) and tail gas purification tower (3), it is characterized in that in the bottom of storage tank (10), rich oil discharge pipe (11) being arranged, be fixed with tail gas purification tower (3) at the top of storage tank (10), tail gas clean-up pump (7) and the oil-poor pipe (9) of adding, be filled with filler (5) at the middle part of tail gas purification tower (3), exhaust collection pipe (8) is arranged below filler (5), the washing oil spray line is arranged above filler (5), catch mist layer (4) on the washing oil spray line, at tail gas purification tower (3) top, the evacuated tube (1) of spark arrester (2) is housed, the outlet of tail gas clean-up pump (3) is connected with the washing oil spray line.
2. the absorption plant of integral type crude benzol as claimed in claim 1 or tar tail gas, is characterized in that described filler (5) is Raschig ring, Pall ring, cascade ring, perforated plate corrugated filler, wire packing, and the filler material is pottery, plastics or metal.
3. the absorption plant of integral type crude benzol as claimed in claim 1 or tar tail gas, is characterized in that described filler (5) is single or multiple lift.
4. the absorption plant of integral type crude benzol as claimed in claim 1 or tar tail gas, is characterized in that described storage tank (10) is horizontal tank.
5. the application of the absorption plant of integral type crude benzol as described in claim 1-4 any one or tar tail gas, is characterized in that comprising the steps:
(1) add oil-poorly in storage tank, filler is packed in tail gas purification tower, filler floor height 1-6m;
The tail gas that (2) will contain crude benzol, tar enters in tail gas purification tower to flowing from the exhaust collection pipe, start the tail gas clean-up pump, from the sprinkling that circulates downwards of washing oil spray line, wherein in tail gas purification tower, empty tower gas velocity is 0.3-1m/s with washing oil, and liquid-gas ratio is 2-25l/m
3, operating pressure is normal pressure, the washing oil temperature is 20-35 ℃;
(3) when in washing oil, benzene class content of material is greater than 2wt%, the rich oil that has absorbed benzene, naphthalene and other noxious material is sent the crude benzol recovery operation back to and is steamed and take off processing, reclaims valuable benzene and naphthalene, and discharging any waste liquor, do not add oil-poor simultaneously; Remove benzene, naphthalene and other organic incoagulability tail gas, by spark arrester and the evacuated tube discharging of tail gas clean-up top of tower.
6. the application of the absorption plant of integral type crude benzol as claimed in claim 5 or tar tail gas is characterized in that described oil-poor be tar washing oil or oil washing oil.
7. the application of the absorption plant of integral type crude benzol as claimed in claim 6 or tar tail gas is characterized in that described tar washing oil is the cut of 230-300 ℃ in high temperature coal-tar.
8. the application of the absorption plant of integral type crude benzol as claimed in claim 6 or tar tail gas is characterized in that described oil washing oil is light diesel fuel, distillates the cut that cuts after gasoline and kerosene when being oil rectifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100923553A CN103157350A (en) | 2013-03-21 | 2013-03-21 | Integrated crude benzene or tar tail gas absorption device and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100923553A CN103157350A (en) | 2013-03-21 | 2013-03-21 | Integrated crude benzene or tar tail gas absorption device and application thereof |
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| CN103157350A true CN103157350A (en) | 2013-06-19 |
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| CN2013100923553A Pending CN103157350A (en) | 2013-03-21 | 2013-03-21 | Integrated crude benzene or tar tail gas absorption device and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436948A (en) * | 2014-11-04 | 2015-03-25 | 南京钢铁股份有限公司 | Integrated ammonium sulfate tail gas washing and impurity removing device and integrated ammonium sulfate tail gas washing and impurity removing method |
| CN108514809A (en) * | 2018-05-08 | 2018-09-11 | 江苏智道工程技术有限公司 | A kind of coking crude benzene deep processing treating tail gas device and method |
| CN112892156A (en) * | 2021-01-18 | 2021-06-04 | 宁夏天源石化有限责任公司 | Method for recovering and purifying waste gas in crude benzene hydrofining production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19937902A1 (en) * | 1999-08-11 | 2001-02-22 | Rag Ag | Removing benzene, naphthalene and water from coke oven gas comprises scrubbing in counter-current stream using absorbent consisting of triethylene glycol at head of absorber column |
| CN101879398A (en) * | 2010-06-29 | 2010-11-10 | 南京钢铁股份有限公司 | Recovery process of coking crude benzene dispersing gas and device thereof |
| CN102049172A (en) * | 2009-11-09 | 2011-05-11 | 中国石油化工股份有限公司 | Improved technology for recovering volatile organic compounds |
| CN202590619U (en) * | 2012-05-15 | 2012-12-12 | 天津市嘉腾环保设备有限公司 | Waste gas mixing mass transfer high-efficiency absorption tower |
| CN203208867U (en) * | 2013-03-21 | 2013-09-25 | 赛鼎工程有限公司 | Integrated crude benzene or tar tail gas absorption device |
-
2013
- 2013-03-21 CN CN2013100923553A patent/CN103157350A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19937902A1 (en) * | 1999-08-11 | 2001-02-22 | Rag Ag | Removing benzene, naphthalene and water from coke oven gas comprises scrubbing in counter-current stream using absorbent consisting of triethylene glycol at head of absorber column |
| CN102049172A (en) * | 2009-11-09 | 2011-05-11 | 中国石油化工股份有限公司 | Improved technology for recovering volatile organic compounds |
| CN101879398A (en) * | 2010-06-29 | 2010-11-10 | 南京钢铁股份有限公司 | Recovery process of coking crude benzene dispersing gas and device thereof |
| CN202590619U (en) * | 2012-05-15 | 2012-12-12 | 天津市嘉腾环保设备有限公司 | Waste gas mixing mass transfer high-efficiency absorption tower |
| CN203208867U (en) * | 2013-03-21 | 2013-09-25 | 赛鼎工程有限公司 | Integrated crude benzene or tar tail gas absorption device |
Non-Patent Citations (1)
| Title |
|---|
| 李融 等: "《化工原理 下册》", 30 June 2009, 上海交通大学出版社, article "填料塔", pages: 59-73 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436948A (en) * | 2014-11-04 | 2015-03-25 | 南京钢铁股份有限公司 | Integrated ammonium sulfate tail gas washing and impurity removing device and integrated ammonium sulfate tail gas washing and impurity removing method |
| CN108514809A (en) * | 2018-05-08 | 2018-09-11 | 江苏智道工程技术有限公司 | A kind of coking crude benzene deep processing treating tail gas device and method |
| CN112892156A (en) * | 2021-01-18 | 2021-06-04 | 宁夏天源石化有限责任公司 | Method for recovering and purifying waste gas in crude benzene hydrofining production |
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Application publication date: 20130619 |