CN201899977U - Tail gas recovery device of coke tar distillation tower - Google Patents
Tail gas recovery device of coke tar distillation tower Download PDFInfo
- Publication number
- CN201899977U CN201899977U CN2010206620414U CN201020662041U CN201899977U CN 201899977 U CN201899977 U CN 201899977U CN 2010206620414 U CN2010206620414 U CN 2010206620414U CN 201020662041 U CN201020662041 U CN 201020662041U CN 201899977 U CN201899977 U CN 201899977U
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- Prior art keywords
- tail gas
- distillation tower
- coke tar
- tar distillation
- communicated
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Abstract
The utility model discloses a tail gas recovery device of a coke tar distillation tower. The tail gas recovery device comprises a tail gas recovery device communicated with a tail gas pipeline at the top of the distillation tower, wherein the tail gas recovery device comprises a condenser and a circulating pump that are communicated with the tail gas pipeline in sequence, and an ammonia water spraying device arranged in the tail gas pipeline; and the circulating pump is respectively communicated with the condenser and the ammonia water spraying device. The tail gas recovery device of the coke tar distillation tower is used for recovering tail gas in the coke tar distillation process, avoids hydrogen chloride in the tail gas from corroding equipment, and achieves recovery and utilization of waste water; and the service life of the equipment is prolonged, and the environmental protection pressure is reduced.
Description
Technical field
The utility model relates to tar distillation equipment, relates in particular to a kind of device for recovering tail gas of coke tar distillation tower.
Background technology
Coal tar is to separate from raw gas in the process of coking, and the method for employing is sprayed with cyclic ammonia water at collecting pipe its cooling is also reclaimed after the condensation.Contained ammoniacal liquor generally leaves standstill to dewater by heating and removes in the coal tar, but the solid ammonium-salt that accounts for the overwhelming majority still can be stayed in the coal tar, therefore in the coal tar distillation process, when temperature is heated to 220～250 ℃ in destilling tower, solid ammonium-salt in the coal tar can resolve into free hydrogen chloride and ammonia, hydrogen chloride and ammonia and water form hydrochloric acid and ammoniacal liquor, can cause the corrosion of pipeline and equipment, reduce service life of equipment, in order to remove the hydrogen chloride in the tar distillation tail gas, prior art generally is to adopt from outside buying alkali and removal hydrogen chloride, and cost is very high.
Summary of the invention
Technical problem to be solved in the utility model is: the deficiency at prior art exists provides a kind of device for recovering tail gas that hydrogen chloride in the destilling tower tail gas is reclaimed, avoids the coke tar distillation tower of equipment corrosion.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The device for recovering tail gas of coke tar distillation tower, comprise the device for recovering tail gas that is communicated with the top exhaust pipe of destilling tower, described device for recovering tail gas comprises condenser, the circulating pump that is communicated with in proper order with described exhaust pipe, with the ammonia spray device that is arranged in the exhaust pipe, described circulating pump is communicated with condenser and ammonia spray device respectively.
As a kind of improvement, described device for recovering tail gas also comprises backflash, and described circulating pump is communicated with described condenser by backflash.
Described ammonia spray device is the shower nozzle that is arranged in the exhaust pipe.
Ammoniacal liquor recycles, and is provided with the ammoniacal liquor reflux line between described circulating pump and ammonia spray device, is used for unnecessary ammoniacal liquor is carried the decontaminated water treating stations.
Owing to adopted technique scheme, the beneficial effects of the utility model are:
1, the utility model is provided with the device for recovering tail gas that communicates with it at the exhaust pipe of destilling tower, cool off in recycling the going in back ammoniacal liquor and the hydrogen chloride in the tail gas, avoided the corrosion of the hydrogen chloride in the tail gas to equipment, not only prolonged service life of equipment, and accomplished the waste water recycling, alleviated environmental protection pressure.
2, the utility model is provided with the ammoniacal liquor reflux line on the circulating line between circulating pump and the ammonia spray device, and unnecessary ammoniacal liquor can be carried the decontaminated water treating stations.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the structural representation of the utility model embodiment.
Among the figure, 1. destilling tower; 2. exhaust pipe; 3. device for recovering tail gas; 31. shower nozzle; 32. condenser; 33. backflash; 34. circulating pump; 35. ammoniacal liquor reflux line.
The specific embodiment
As shown in drawings, the device for recovering tail gas of coke tar distillation tower, comprise the device for recovering tail gas 3 that is communicated with the top exhaust pipe 2 of destilling tower 1, described device for recovering tail gas 3 comprises the condenser 32 that is communicated with exhaust pipe 2 orders, backflash 33, circulating pump 34 and shower nozzle 31, described shower nozzle 31 is arranged in the exhaust pipe 2, the import of described condenser 32 is communicated with exhaust pipe 2, the import of described circulating pump 34 is communicated with condenser 32 outlets by backflash 33, the outlet of circulating pump 34 is communicated with the import of shower nozzle 31, on the pipeline between circulating pump 34 and the shower nozzle 31, be provided with ammoniacal liquor reflux line 35, be used for unnecessary ammoniacal liquor is carried the decontaminated water treating stations.
Operation principle of the present utility model is: in the tar distillation process, hydrogen chloride in the tail gas enters the exhaust pipe 2 at destilling tower 1 top, after entering condenser 32 after the ammoniacal liquor neutralization reaction that is sprayed by shower nozzle 31 and being condensed, enter backflash 33, be recycled pump 34 then and remove shower nozzle 31 from backflash 33 interior extractions out, continue in the spray and the hydrogen chloride in the tail gas, ammoniacal liquor recycles, and unnecessary ammoniacal liquor goes to waste water processing station through ammoniacal liquor reflux line 35.
Claims (4)
1. the device for recovering tail gas of coke tar distillation tower, comprise the device for recovering tail gas that is communicated with the top exhaust pipe of destilling tower, it is characterized in that: described device for recovering tail gas comprises condenser, the circulating pump that is communicated with in proper order with described exhaust pipe, with the ammonia spray device that is arranged in the exhaust pipe, described circulating pump is communicated with condenser and ammonia spray device respectively.
2. the device for recovering tail gas of coke tar distillation tower as claimed in claim 1, it is characterized in that: described device for recovering tail gas also comprises backflash, described circulating pump is communicated with described condenser by backflash.
3. the device for recovering tail gas of coke tar distillation tower as claimed in claim 1 or 2, it is characterized in that: described ammonia spray device is the shower nozzle that is arranged in the exhaust pipe.
4. the device for recovering tail gas of coke tar distillation tower as claimed in claim 1 or 2 is characterized in that: be provided with the ammoniacal liquor reflux line between described circulating pump and ammonia spray device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206620414U CN201899977U (en) | 2010-12-04 | 2010-12-04 | Tail gas recovery device of coke tar distillation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206620414U CN201899977U (en) | 2010-12-04 | 2010-12-04 | Tail gas recovery device of coke tar distillation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201899977U true CN201899977U (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206620414U Expired - Fee Related CN201899977U (en) | 2010-12-04 | 2010-12-04 | Tail gas recovery device of coke tar distillation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201899977U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999528A (en) * | 2019-04-18 | 2019-07-12 | 中国科学院山西煤炭化学研究所 | Exhaust treatment system |
| CN111760320A (en) * | 2020-08-11 | 2020-10-13 | 中国石油化工股份有限公司 | Method and device for slowing down corrosion of reflux system at tower top of condensate stripping tower |
| CN114225448A (en) * | 2021-12-20 | 2022-03-25 | 西安石油大学 | Tower top system dew point corrosion prevention and control method |
-
2010
- 2010-12-04 CN CN2010206620414U patent/CN201899977U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999528A (en) * | 2019-04-18 | 2019-07-12 | 中国科学院山西煤炭化学研究所 | Exhaust treatment system |
| CN111760320A (en) * | 2020-08-11 | 2020-10-13 | 中国石油化工股份有限公司 | Method and device for slowing down corrosion of reflux system at tower top of condensate stripping tower |
| CN114225448A (en) * | 2021-12-20 | 2022-03-25 | 西安石油大学 | Tower top system dew point corrosion prevention and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |