CN101624540A - Process for separately desulfurizing and decarbonizing feed gases for coproduction of ammonia and alcohol - Google Patents
Process for separately desulfurizing and decarbonizing feed gases for coproduction of ammonia and alcohol Download PDFInfo
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- CN101624540A CN101624540A CN200810138299A CN200810138299A CN101624540A CN 101624540 A CN101624540 A CN 101624540A CN 200810138299 A CN200810138299 A CN 200810138299A CN 200810138299 A CN200810138299 A CN 200810138299A CN 101624540 A CN101624540 A CN 101624540A
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- desulfurization
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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
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Abstract
The invention discloses a process for separately desulfurizing and decarbonizing feed gases for the coproduction of ammonia and alcohol. Gases with different content of carbon monoxide are separately desulfurized and decarbonized by fully utilizing the prior synthetic ammonia producing device, thus the desulphurization effect and the decarbonization effect of feed gases are ensured, and the loss of the carbon monoxide is reduced. The invention not only can lower the expenditure for separately desulfurizing and decarbonizing the feed gases, but also can fully utilize the desulfurizing function of idle desulfurizing equipment and the pressure swing absorption decarbonizing technology, thereby achieving the purpose of reducing the investment.
Description
Technical field
The invention belongs to technical field of coal chemical industry, especially relate to a kind of synthetic ammonia and methanol with joint production Technology of Coal Chemical Industry industry.
Background technology
At present, the synthetic ammonia of Coal Chemical Industry industry and methanol with joint production technology, the refining and reorganization of its unstripped gas is mostly finished under an operational path; Semi-water gas is finished the main process of removal of impurities, conversion through desulfurization, conversion, decarburization.Decarburization adopts normally that level of automation is higher, stable, the pressure swing adsorption process of energy expenditure, when the alcohol/ammonia ratio example is increased to more than 30%, because the carbon monoxide content in the unstripped gas improves, in decarbonation, there is a large amount of carbon monoxide to take off thereupon, makes the effective gas in the unstripped gas lose more than 2%.Be unfavorable for improving output, increase economic benefit.
Summary of the invention
Purpose of the present invention is exactly in existing synthetic ammonia and the methanol with joint production technology, has the problem of a large amount of carbon monoxide gases of loss in unstripped gas refining, provides a kind of new fine gas technology, to reduce carbon monoxide loss.
The objective of the invention is to be achieved through the following technical solutions, make full use of existing Ammonia Production device, the gases different to carbon monoxide content separately carry out desulfurization, decarburization, and its technological process is: a large amount of lower unstripped gass of CO that contain adopt pressure swing adsorption decarbonization; Semi-water gas after the thick desulfurization is through the CO transformationreation, CO is reduced to below 2.0%, enter the pressure swing adsorption decarbonization operation after simultaneously 90% organosulfur is converted into the inorganic sulfur that easily takes off, utilize the function that its decarburization simultaneously can desulfurization, CO2 in the unstripped gas is taken off to below 0.6%, and H2S takes off to 10mg/m
3Below, mix with another branch's gas and carry out smart desulfurization to 0.03ppm.After the tail gas of pressure swing adsorption decarbonization is removed wherein H2S by the liquid method desulfurization, emptying or produce the CO2 product.
Adopt the liquid decarburization with containing the higher unstripped gas of carbon monoxide on a small quantity; Semi-water gas after the thick desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 10mg/m
3Below, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and smart desulfurization is sent the methyl alcohol operation after below the 0.03ppm.
The invention has the beneficial effects as follows:
Utilize pressure swing adsorption decarbonization and stablize the advantage of low consumption, utilize the function of its desulfurization, decarburization, remove H2S in the decarbonated exhaust gas by liquid phase method again except that keeping, because the decarbonated exhaust gas amount is little, pressure is low, the concentration height of H2S in tail gas, sulphur easily take off and working cost lower.Like this, can satisfy the purification requirement, can reduce effective gas loss again, the expense of separate treatment is descended to some extent, can make full use of the idle sweetener and the desulfurizing function of pressure swing adsorption decarbonization again, reach the purpose that reduces investment.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
Embodiment
Embodiment one
Make full use of existing Ammonia Production device, the gases different to carbon monoxide content separately carry out desulfurization, decarburization, and its technological process is: a large amount of lower unstripped gass of CO that contain adopt pressure swing adsorption decarbonization; Semi-water gas after the thick desulfurization is through the CO transformationreation, make CO reduce to 1.5%, enter the pressure swing adsorption decarbonization operation after simultaneously 90% organosulfur is converted into the inorganic sulfur that easily takes off, utilize the function that its decarburization simultaneously can desulfurization, CO2 in the unstripped gas is taken off to 0.4%, and H2S takes off to 8mg/m
3, mix with another branch's gas and smart desulfurization to 0.02ppm, after the tail gas of pressure swing adsorption decarbonization is removed wherein H2S by the liquid method desulfurization, emptying or produce the CO2 product.
Adopt the liquid decarburization with containing the higher unstripped gas of carbon monoxide on a small quantity; Semi-water gas after the thick desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 8mg/m
3, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and desulfurization is sent the methyl alcohol operation to 0.02ppm.
Claims (5)
1, unstripped gas desulfurization, the decarburization separate treatment technology of the coproduction of a kind of ammonia alcohol, this process makes full use has the Ammonia Production device now, the gases different to carbon monoxide content separately carry out desulfurization, decarburization, it is characterized in that a large amount of lower unstripped gass of CO that contains is adopted pressure swing adsorption decarbonization, adopt the liquid decarburization containing the higher unstripped gas of carbon monoxide on a small quantity.
2, unstripped gas desulfurization, the decarburization separate treatment technology of a kind of ammonia alcohol according to claim 1 coproduction adopt pressure swing adsorption decarbonization with a large amount of lower unstripped gass of CO that contains; Semi-water gas after the thick desulfurization is through the CO transformationreation, CO is reduced to below 2.0%, enter the pressure swing adsorption decarbonization operation after simultaneously 90% organosulfur is converted into the inorganic sulfur that easily takes off, utilize the function that its decarburization simultaneously can desulfurization, CO2 in the unstripped gas is taken off to below 0.6%, and H2S takes off to 10mg/m
3Below, mix with another branch's gas and smart desulfurization to 0.03ppm, after the tail gas that it is characterized in that pressure swing adsorption decarbonization is removed wherein H2S by the liquid method desulfurization, emptying or produce the CO2 product.
3, unstripped gas desulfurization, the decarburization separate treatment technology of a kind of ammonia alcohol according to claim 1 coproduction is characterized in that adopting the liquid decarburization with containing the higher unstripped gas of carbon monoxide on a small quantity; Semi-water gas after the thick desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 10mg/m
3Below, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and desulfurization is sent the methyl alcohol operation after below the 0.03ppm.
4,, it is characterized in that adopting the liquid decarburization with containing the higher unstripped gas of carbon monoxide on a small quantity according to unstripped gas desulfurization, the decarburization separate treatment technology of claim 1 or 3 described a kind of ammonia alcohol coproduction; Semi-water gas after the thick desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 8mg/m
3, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and desulfurization is sent the methyl alcohol operation to 0.02ppm.
Semi-water gas after the desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 10mg/m
3Below, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and desulfurization is sent the methyl alcohol operation after below the 0.03ppm.
4,, it is characterized in that adopting the liquid decarburization with containing the higher unstripped gas of carbon monoxide on a small quantity according to unstripped gas desulfurization, the decarburization separate treatment technology of claim 1 or 3 described a kind of ammonia alcohol coproduction; Semi-water gas after the thick desulfurization makes organosulfur become inorganic sulfur through conversion tank, carries out the liquid desulfurization then, and H2S is taken off to 8mg/m
3, the gas after the desulfurization is through the liquid phase method decarburization or make bicarbonate of ammonia, and purified gas mixes with another branch's gas and desulfurization is sent the methyl alcohol operation to 0.02ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810138299A CN101624540A (en) | 2008-07-11 | 2008-07-11 | Process for separately desulfurizing and decarbonizing feed gases for coproduction of ammonia and alcohol |
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| CN200810138299A CN101624540A (en) | 2008-07-11 | 2008-07-11 | Process for separately desulfurizing and decarbonizing feed gases for coproduction of ammonia and alcohol |
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| CN101624540A true CN101624540A (en) | 2010-01-13 |
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| CN200810138299A Pending CN101624540A (en) | 2008-07-11 | 2008-07-11 | Process for separately desulfurizing and decarbonizing feed gases for coproduction of ammonia and alcohol |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885993A (en) * | 2010-07-12 | 2010-11-17 | 赛鼎工程有限公司 | Purification process for removing sulphur and carbon dioxide in gas by using two-step method |
| CN107235473A (en) * | 2017-06-09 | 2017-10-10 | 杨皓 | A kind of carbon black tail gas and coke oven tail gas combined production of ammonia alcohol synthesis gas process |
| CN108383139A (en) * | 2018-04-20 | 2018-08-10 | 包头市远达鑫化工有限公司 | The process units and method of ammonium hydrogen carbonate |
| CN110964575A (en) * | 2019-11-14 | 2020-04-07 | 金沂蒙集团有限公司 | Energy-saving environment-friendly novel synthetic ammonia desulfurization process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405132A (en) * | 2002-11-22 | 2003-03-26 | 清华大学 | Process method and system for synthesizing methanel using by-product coal-gas during metallurgical process |
| CN1778782A (en) * | 2004-11-19 | 2006-05-31 | 朱宗林 | Process of coarse methanol from synthetized ammonia |
| CN101125796A (en) * | 2007-09-06 | 2008-02-20 | 临汾同世达实业有限公司 | Method for producing alcohol ether fuel from hydrogen prepared from coke oven gas and synthesis gas prepared from scorched particles |
-
2008
- 2008-07-11 CN CN200810138299A patent/CN101624540A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405132A (en) * | 2002-11-22 | 2003-03-26 | 清华大学 | Process method and system for synthesizing methanel using by-product coal-gas during metallurgical process |
| CN1778782A (en) * | 2004-11-19 | 2006-05-31 | 朱宗林 | Process of coarse methanol from synthetized ammonia |
| CN101125796A (en) * | 2007-09-06 | 2008-02-20 | 临汾同世达实业有限公司 | Method for producing alcohol ether fuel from hydrogen prepared from coke oven gas and synthesis gas prepared from scorched particles |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885993A (en) * | 2010-07-12 | 2010-11-17 | 赛鼎工程有限公司 | Purification process for removing sulphur and carbon dioxide in gas by using two-step method |
| CN101885993B (en) * | 2010-07-12 | 2013-05-29 | 赛鼎工程有限公司 | Purification process for removing sulphur and carbon dioxide in gas by using two-step method |
| CN107235473A (en) * | 2017-06-09 | 2017-10-10 | 杨皓 | A kind of carbon black tail gas and coke oven tail gas combined production of ammonia alcohol synthesis gas process |
| CN108383139A (en) * | 2018-04-20 | 2018-08-10 | 包头市远达鑫化工有限公司 | The process units and method of ammonium hydrogen carbonate |
| CN110964575A (en) * | 2019-11-14 | 2020-04-07 | 金沂蒙集团有限公司 | Energy-saving environment-friendly novel synthetic ammonia desulfurization process |
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Application publication date: 20100113 |