CN1028011C - 3-c hydrocarbon decarbonizing process and device thereof - Google Patents

3-c hydrocarbon decarbonizing process and device thereof Download PDF

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Publication number
CN1028011C
CN1028011C CN91101928A CN91101928A CN1028011C CN 1028011 C CN1028011 C CN 1028011C CN 91101928 A CN91101928 A CN 91101928A CN 91101928 A CN91101928 A CN 91101928A CN 1028011 C CN1028011 C CN 1028011C
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CN
China
Prior art keywords
gas
air
ammonia
propylene carbonate
absorption tower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN91101928A
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Chinese (zh)
Other versions
CN1064458A (en
Inventor
周学良
孙建民
刘永灵
王邦进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Decarbonization Chemical Technology Development Co
Jiangshan chemical general factory
Hangzhou Chemical And Engineering Institute
Original Assignee
Hangzhou Decarbonization Chemical Technology Development Co
Jiangshan chemical general factory
Hangzhou Chemical And Engineering Institute
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Filing date
Publication date
Application filed by Hangzhou Decarbonization Chemical Technology Development Co, Jiangshan chemical general factory, Hangzhou Chemical And Engineering Institute filed Critical Hangzhou Decarbonization Chemical Technology Development Co
Priority to CN91101928A priority Critical patent/CN1028011C/en
Publication of CN1064458A publication Critical patent/CN1064458A/en
Application granted granted Critical
Publication of CN1028011C publication Critical patent/CN1028011C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/151Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Abstract

The present invention relates to technology and a device thereof in fertilizer production processes. The third carbon decarbonization technological process is mainly composed of absorption, flash evaporation and gas stripping; air K enters an ammonia cooler 3 and flows into a gas-water separator 4 to be dewatered, and then enters a blower fan 8 to be conveyed to a regeneration tower 7; the ammonia cooler 3 and the gas-water separator 4 which are in parallel connection is arranged on a pipeline 10 between the blower fan 8 and a filter 9; the lower part of both the ammonia cooler 3 and the gas-water separator 4 is respectively provided with a bent pipe 5. During summer seasons, the present invention does not decrease the synthetic ammonia yield, decreases the carbon dioxide content in purified gas, and solvent consumption, and saves electric energy.

Description

3-c hydrocarbon decarbonizing process and device thereof
The present invention relates to technology and device thereof in the chemical fertilizers production flow process, be mainly used in the carbonic acid gas that removes in the synthetic-ammonia transformation gas.
At present, adopt propylene carbonate to remove the technology and the device thereof of carbonic acid gas in the conversion gas in Ammonia Production, " propylene carbonate removes CO as " southization science and technology " No2 in 1984 2With H 2S " and " chemical fertilizer industry " No1 in 1988 " propylene carbonate decarburization technique and improve imagination " literary composition in, propylene carbonate decarbonization process process is mainly put forward three parts by absorption-flash distillation-gas and is formed; Device mainly is made up of absorption tower, flasher, solvent pump, regenerator column, gas blower, pipeline.Its technology and device just but dewater conversion air cooling, and air is not carried out cooled dehydrated, propylene carbonate is carried through pressurizing absorption, normal pressure desorb, gas, the propylene carbonate temperature rises to some extent, the solubleness variation of carbonic acid gas in propylene carbonate influences the carbonic acid gas effect in the propylene carbonate absorption conversion gas; Especially summer, air themperature was more than 30 ℃, and propylene carbonate decarburization effect descends, and caused production decrement and running cost to improve, even forced stopping production.So, need reform creation to former technology and the device thereof that removes carbonic acid gas in the conversion gas with propylene carbonate.
The purpose of this invention is to provide propylene carbonate decarbonization process and device thereof that the cooling air dehydration is arranged in a kind of Ammonia Production flow process.
Realize above-mentioned purpose of the present invention by following design and mode:
This decarbonization process comprises that conversion gas goes into absorption tower bottom, contacts with top-down propylene carbonate anti-phase and removes CO 2After, purified gas comes out from the top, absorption tower; Absorb CO 2After propylene carbonate at the bottom of the absorption tower, come out, this propylene carbonate (rich solution) advances the desorb of normal pressure desorption device, often vent one's spleen and discharge from the top, often separating liquid goes into gas by potential difference and carries device, after air gas is carried, gas stripping gas is discharged from the top, after carrying the gas extract (lean solution) that device bottom comes out from gas and squeezing into the cooling of solvent ammonia cooler by solvent pump, enters the absorption tower circulation; The air that it is characterized in that the gas drawings is gone into the cooling of air ammonia cooler after filtering through filter, again through the dehydration of air water separator, sends into gas by gas blower and carries device and do the gas drawings.
This decarbonization device, comprise absorption tower, solvent ammonia cooler, solvent pump, regenerator column (comprising the gentle device of carrying of normal pressure desorption device), gas blower, strainer, pipeline, safety vent valve, it is characterized in that air ammonia cooler and the air water separator of being equiped with in parallel on the pipeline between gas blower and the strainer, be connected with the liquefied ammonia total pipeline at the bottom of the air ammonia cooler, automatic spilling water bend pipe is all installed in air ammonia cooler and air water separator bottom.
The present invention adopts the air cooling dehydration, and the degree of purification of propylene carbonate decarburization is improved, summer not decrement produce synthetic ammonia; And, also have advantages such as the solvent consumption of reduction and saves energy.
Accompanying drawing represents that the present invention removes the technology and the device concrete structure thereof of carbonic acid gas in the conversion gas with propylene carbonate.
Fig. 1 removes the technology and the device thereof of carbonic acid gas in the conversion gas for this with propylene carbonate.
Describe details of the present invention and operating mode in detail below in conjunction with accompanying drawing.
This decarbonization process comprises that conversion gas B goes into 1 end of absorption tower, contacts with top-down propylene carbonate P anti-phase and removes CO 2After, purified gas J comes out at 1 top from the absorption tower; Propylene carbonate P goes into tower in 1 top from the absorption tower, absorbs CO 2Come out 1 bottom from the absorption tower in the back, this propylene carbonate P(rich solution) advances normal pressure desorption device C desorb, often vent one's spleen and discharge from the top, often separating liquid goes into gas by potential difference and carries device Q, after air K gas is carried, gas stripping gas is discharged from the top, puies forward the gas extract P(lean solution of coming out in device Q bottom from gas) squeeze into 2 coolings of solvent ammonia cooler by solvent pump 6 after, enter absorption tower 1 circulation; The air K that it is characterized in that the gas drawings goes into 3 coolings of air ammonia cooler after filtering through filter 9, again through 4 dehydrations of air water separator, sends into gas by gas blower 8 and carries device Q and do the gas drawings.
This decarbonization device, comprise that absorption tower 1, solvent ammonia cooler 2, solvent pump 6, regenerator column 7(comprise the gentle device Q that carries of normal pressure desorption device C), gas blower 8, strainer 9, pipeline 10, safety vent valve 11, it is characterized in that air ammonia cooler 3 and the air water separator 4 of being equiped with in parallel on the pipeline 10 between gas blower 8 and the strainer 9,3 ends of air ammonia cooler, be connected with liquefied ammonia total pipeline 10, air ammonia cooler 3 is all installed bend pipe 5 with air water separator 4 bottoms, and bend pipe plays automatic spilling water effect.
In summer, the stopping valve F between this decarbonization device middle filtrator 9 and the gas blower 8 is closed, open the stopping valve Fx between strainer 9 and the air ammonia cooler 3.
The liquefied ammonia NL of liquefied ammonia total pipeline 10 enters solvent ammonia cooler 2 and air ammonia cooler 3 respectively, and the liquefied ammonia evaporation makes propylene carbonate and air cooling, the gas ammonia NG air inlet ammonia total pipeline 10 after the evaporation.Propylene carbonate P comes out from regenerator column 7 bottoms, advance solvent pump 6 and send into solvent ammonia cooler 2, cool off 1 top, laggard absorption tower and go into the tower absorbing carbon dioxide, propylene carbonate P(rich solution) come out in 1 bottom from the absorption tower, flow into regenerator column 7 top normal pressure desorption device C, after flowing into gas after the flash distillation and carrying device Q gas and carry, enter solvent pump 6 from regenerator column 7 bottoms again and constantly circulate.Air K goes into air ammonia cooler 3 through filter 9, cools off laggard air water separator 4, and air is carried out cooled dehydrated, behind the separation moisture content, sends into regenerator column 7 by gas blower 8 and does the gas drawings; The propylene carbonate P temperature in summer is controlled at about 15 ℃, and the purified gas carbon dioxide content is lower than 0.8%.Thereby, reduce effects such as solvent consumption and saves energy.

Claims (2)

1, a kind ofly removes the technology of carbonic acid gas in the synthetic-ammonia transformation gas, comprise that conversion gas (B) goes into the end, absorption tower (1), contact with top-down propylene carbonate (P) anti-phase and remove CO with propylene carbonate 2After, purified gas (J) comes out at (1) top from the absorption tower; Propylene carbonate (P) is gone into tower in (1) top from the absorption tower, sucks CO 2Come out (1) bottom from the absorption tower in the back, this propylene carbonate (P) advances normal pressure desorption device (C) desorb, often vent one's spleen and discharge from the top, often separating liquid goes into gas by potential difference and carries device (Q), after air gas is carried, gas stripping gas is discharged from the top, after carrying the gas extract (lean solution) that device (Q) bottom comes out from gas and squeezing into solvent ammonia cooler (2) cooling by solvent pump (6), enters absorption tower (1) circulation; The air (K) that it is characterized in that the gas drawings is gone into air ammonia cooler (3) cooling after filtering through filter (9), again through air water separator (4) dehydration, sends into gas by gas blower (8) and carries device (Q) and do the gas drawings.
2, a kind of device that removes carbonic acid gas in the synthetic-ammonia transformation gas with propylene carbonate, comprise absorption tower (1), solvent ammonia cooler (2), solvent pump (6), regenerator column (7), gas blower (8), strainer (9), pipeline (10), safety vent valve (11), it is characterized in that being equipped with on the pipeline (10) between gas blower (8) and the strainer (9) air ammonia cooler (3) and air water separator (4), air ammonia cooler (3) end, be connected with liquefied ammonia total pipeline (10), and air ammonia cooler (3) all is equipped with bend pipe (5) with air water separator (4) bottom.
CN91101928A 1991-03-25 1991-03-25 3-c hydrocarbon decarbonizing process and device thereof Expired - Fee Related CN1028011C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN91101928A CN1028011C (en) 1991-03-25 1991-03-25 3-c hydrocarbon decarbonizing process and device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN91101928A CN1028011C (en) 1991-03-25 1991-03-25 3-c hydrocarbon decarbonizing process and device thereof

Publications (2)

Publication Number Publication Date
CN1064458A CN1064458A (en) 1992-09-16
CN1028011C true CN1028011C (en) 1995-03-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN91101928A Expired - Fee Related CN1028011C (en) 1991-03-25 1991-03-25 3-c hydrocarbon decarbonizing process and device thereof

Country Status (1)

Country Link
CN (1) CN1028011C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101254388B (en) * 2008-04-03 2010-08-04 清华大学 Carbon elimination technique using dimethyl carbonate as absorbing agent

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002307364C1 (en) * 2002-04-15 2008-07-10 Fluor Technologies Corporation Configurations and methods for improved acid gas removal
CN101830462B (en) * 2010-06-03 2012-05-23 清华大学 CO2 trapping method combining dimethyl carbonate absorption and membrane desorption
CN103922340A (en) * 2013-08-25 2014-07-16 贵州兴化化工股份有限公司 CO2 recovery improvement method in decarburization process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101254388B (en) * 2008-04-03 2010-08-04 清华大学 Carbon elimination technique using dimethyl carbonate as absorbing agent

Also Published As

Publication number Publication date
CN1064458A (en) 1992-09-16

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