CN201988310U - Synthesis ammonia decarbonizing flash steam recovery device - Google Patents
Synthesis ammonia decarbonizing flash steam recovery device Download PDFInfo
- Publication number
- CN201988310U CN201988310U CN2011200232104U CN201120023210U CN201988310U CN 201988310 U CN201988310 U CN 201988310U CN 2011200232104 U CN2011200232104 U CN 2011200232104U CN 201120023210 U CN201120023210 U CN 201120023210U CN 201988310 U CN201988310 U CN 201988310U
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- CN
- China
- Prior art keywords
- absorption tower
- gas
- outlet
- valve
- decarburization
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Abstract
The utility model relates to a synthesis ammonia decarbonizing flash steam recovery device, which comprises a decarbonizing pump, a high-pressure flash steam absorption tower, a scrubber and a separator. The upper portion of the high-pressure flash steam absorption tower is provided with a liquid inlet connected with the decarbonizing pump, one side of the lower portion of the high-pressure flash steam absorption tower is provided with a gas inlet, the other side of the lower portion of the high-pressure flash steam absorption tower is provided with a liquid outlet, and the top of the high-pressure flash steam absorption tower is provided with a gas outlet. The gas outlet of the top of the absorption tower is connected with an inlet on the lower portion of the scrubber, and connected with an inlet on the lower portion of the separator through a valve, and the top of the separator is provided with an outlet. The device fully recovers effective hydrogen gas and nitrogen gas in the decarbonizing flash steam, synthesis ammonia yield is increased and urea yield is also increased by recovering CO2 (carbon dioxide) gas. By utilizing an ammonia synthesis device with the process, 2% synthesis ammonia yield and 3% urea yield can be effectively increased.
Description
Technical field
The utility model belongs to the Ammonia Production technical field, is specifically related to the decarburization flashed vapour retracting device in a kind of Ammonia Production technology.
Background technology
China's Ammonia Production adopts solid fuel to produce syngas for synthetic ammonia mostly, promptly in the gas making producer, with carbon-coating generation oxidation reaction fervid in airborne oxygen and the stove, emit a large amount of heat energy, in carbon-coating, store, when temperature reaches certain value in the stove, use water vapour instead by fervid carbon-coating, absorb heat and decomposite CO+H
2When furnace temperature is on the low side, be blown into air once more to promote furnace temperature, so circulation, be called intermittently gas making method of fixed bed, its circulation is divided into blows on blowing temperature raising, the steam that gas, steam are blown gas on blowing gas, the secondary steam down, air blows off and reclaims coal gas and blowing once more.
In existing manufacturing technique, the liquid that decarburization workshop section discharges after the high flash slot flash distillation (being the decarburization flashed vapour) without any processing, directly emptying exists a lot of not enough.Still contain portion C O in the decarburization flashed vapour
2, H
2And N
2,, directly emptying makes CO
2Be disposed in the atmosphere, increased the atmosphere greenhouse effects, unfavorable to environment, and H
2And N
2Be the primary raw material of synthetic ammonia, emptying causes energy waste, and production cost increases, and also is unfavorable for energy-conserving and environment-protective.
The utility model content
The utility model purpose is to provide the retracting device of the decarburization flashed vapour in a kind of Ammonia Production technology, in order to recycle the CO in the decarburization flashed vapour
2, H
2And N
2
For achieving the above object, the utility model adopts following technical scheme:
A kind of synthetic ammonia decarburization flashed vapour retracting device, it comprises decarburization pump, high pressure flash gas absorption tower, washer and separator, top, described high pressure flash gas absorption tower is provided with the liquid-inlet of connection from the decarburization pump, bottom one side is provided with gas feed, opposite side is provided with liquid outlet, and the top is provided with gas vent; The gas vent at this top, absorption tower is connected with the import of washer bottom, and the outlet at washer top is connected through the import of valve with the separator bottom, and the separator top is provided with outlet.
The liquid outlet of bottom, above-mentioned high pressure flash gas absorption tower is connected with the lower flash slot import through valve, and the lower flash slot outlet is connected with Chang Xieta through valve.
Above-mentioned decarburization pump discharge is connected through the liquid-inlet of valve with top, high pressure flash gas absorption tower, and the pipeline of described separator outlet is provided with two branch roads, and a branch road is provided with valve, and another branch road connects hydrogen nitrogen compressor.
Valve is generally established two-way on the pipeline of this retracting device, and one the tunnel establishes a stop valve gets final product; Three valves that are arranged in parallel are established on another road, and the centre is a control valve, and the control valve both sides are stop valves.This being arranged in the ammonia synthesis process by two bypass valve gate control pipeline gas circulations is conventional design, when one road valve goes wrong, can come control piper circulation or maintenance by another branch road valve.
The beneficial effects of the utility model: the decarburization flashed vapour in the Ammonia Production technology is directly emptying not, but enter in the high pressure flash gas absorption tower, fully contact with the carbonic allyl ester solution (being commonly called as carbon third liquid) from the decarburization pump, decarbonizing liquid has absorbed the CO in the flashed vapour
2Gas is removed CO
2After flashed vapour only remaining H after scrubbing tower, knockout tower purification separation
2And N
2, the raw material that can be used as synthetic ammonia after hydrogen nitrogen compressor compresses is utilized once more.In addition, absorbed CO
2Carbon third liquid of gas obtains the CO of purity more than 95.7% behind lower flash slot, Chang Xieta
2Gas can directly be delivered to urea workshop section and be used as the unstripped gas of producing urea.The utility model device has fully reclaimed hydrogen, the nitrogen available gas in the decarburization flashed vapour, has increased synthetic ammonia output, has also fully reclaimed CO simultaneously
2Gas is to increase urea production.Identical synthetic ammonia installation adopts this flow process can effectively improve 2% synthetic ammonia output, improves 3% urea production.
Description of drawingsFig. 1 is the structural representation of the utility model retracting device.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further details, but protection domain of the present utility model is not limited thereto.
As shown in Figure 1, a kind of synthetic ammonia decarburization flashed vapour retracting device, it comprises decarburization pump 2, high pressure flash gas absorption tower 3, washer 4 and separator 5,3 tops, described high pressure flash gas absorption tower are provided with the liquid-inlet (decarburization pump 2 outlets through valve 9 liquid-inlet with absorption tower 3 tops be connected) of connection from decarburization pump 2, bottom one side is provided with gas feed, opposite side is provided with liquid outlet, and the top is provided with gas vent; The gas vent at these 3 tops, absorption tower is connected with the import of washer 4 bottoms, and the outlet at washer 4 tops is connected through the import of valve 12 with separator 5 bottoms, and separator 5 tops are provided with outlet.The pipeline of separator 5 outlets is provided with two branch roads, and a branch road is provided with valve 14, and another branch road connects hydrogen nitrogen compressor 6.The liquid outlet of 3 bottoms, high pressure flash gas absorption tower is connected with lower flash slot 7 imports through valve 11, lower flash slot 7 outlet through valve 13 with often separate tower 8 and be connected.
During use, decarburization flashed vapour 1 enters in the tower from the gas feed of 3 bottoms, high pressure flash gas absorption tower, and fully contacts from decarburization pump 2,3 upper liquid imports enter from the absorption tower the carbon third liquid adverse current, and carbon third liquid has absorbed the CO in the flashed vapour
2Gas is removed CO
2After flashed vapour only remaining H after washer 4, separator 5 purification separation
2And N
2, its raw material that can be used as synthetic ammonia after 6 compressions of hydrogen nitrogen compressor is utilized once more.And absorbed CO
2The liquid outlet of carbon third liquid 3 bottoms from the absorption tower of gas is discharged, through lower flash slot 7, often obtain the CO of purity more than 95.7% after separating tower 8
2Gas can directly be sent to urea workshop section and use as the unstripped gas of producing urea.This device has fully reclaimed H in the decarburization flashed vapour
2, N
2And CO
2, increased synthetic ammonia and urea production.Identical synthetic ammonia installation adopts this flow process can effectively improve 2% synthetic ammonia output, improves 3% urea production.It should be noted last that: above embodiment only is illustrative rather than definitive thereof the technical solution of the utility model, any modification that the utility model is carried out or be equal to replacement, and any modification or partial replacement that does not break away from the utility model spirit and scope, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. synthetic ammonia decarburization flashed vapour retracting device, it is characterized in that, it comprises decarburization pump, high pressure flash gas absorption tower, washer and separator, top, described high pressure flash gas absorption tower is provided with the liquid-inlet of connection from the decarburization pump, bottom one side is provided with gas feed, opposite side is provided with liquid outlet, and the top is provided with gas vent; The gas vent at this top, absorption tower is connected with the import of washer bottom, and the outlet at washer top is connected through the import of valve with the separator bottom, and the separator top is provided with outlet.
2. synthetic ammonia decarburization flashed vapour retracting device as claimed in claim 1 is characterized in that the liquid outlet of bottom, described high pressure flash gas absorption tower is connected with the lower flash slot import through valve, and the lower flash slot outlet is connected with Chang Xieta through valve.
3. synthetic ammonia decarburization flashed vapour retracting device as claimed in claim 1 or 2, it is characterized in that, described decarburization pump discharge is connected through the liquid-inlet of valve with top, high pressure flash gas absorption tower, the pipeline of described separator outlet is provided with two branch roads, one branch road is provided with valve, and another branch road connects hydrogen nitrogen compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200232104U CN201988310U (en) | 2011-01-25 | 2011-01-25 | Synthesis ammonia decarbonizing flash steam recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200232104U CN201988310U (en) | 2011-01-25 | 2011-01-25 | Synthesis ammonia decarbonizing flash steam recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988310U true CN201988310U (en) | 2011-09-28 |
Family
ID=44664815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200232104U Expired - Fee Related CN201988310U (en) | 2011-01-25 | 2011-01-25 | Synthesis ammonia decarbonizing flash steam recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583439A (en) * | 2012-02-08 | 2012-07-18 | 浠水县福瑞德化工有限责任公司 | Available gas recovery method in ammonia synthesis process |
| CN110642272A (en) * | 2019-09-30 | 2020-01-03 | 安徽金禾实业股份有限公司 | Decarbonization waste gas recovery system alkali device of synthetic ammonia |
-
2011
- 2011-01-25 CN CN2011200232104U patent/CN201988310U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583439A (en) * | 2012-02-08 | 2012-07-18 | 浠水县福瑞德化工有限责任公司 | Available gas recovery method in ammonia synthesis process |
| CN102583439B (en) * | 2012-02-08 | 2013-07-24 | 浠水县福瑞德化工有限责任公司 | Available gas recovery method in ammonia synthesis process |
| CN110642272A (en) * | 2019-09-30 | 2020-01-03 | 安徽金禾实业股份有限公司 | Decarbonization waste gas recovery system alkali device of synthetic ammonia |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20170125 |