CN101993339B - Cold blowing cooling method for converter gas in production of methyl alcohol by using coke-oven gas and converter gas - Google Patents
Cold blowing cooling method for converter gas in production of methyl alcohol by using coke-oven gas and converter gas Download PDFInfo
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- CN101993339B CN101993339B CN2010105309475A CN201010530947A CN101993339B CN 101993339 B CN101993339 B CN 101993339B CN 2010105309475 A CN2010105309475 A CN 2010105309475A CN 201010530947 A CN201010530947 A CN 201010530947A CN 101993339 B CN101993339 B CN 101993339B
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Abstract
The invention discloses a cold blowing cooling method in the converter gas temperature swing adsorption process in the technology of preparing methyl alcohol by using coke-oven gas and converter gas. The method is mainly characterized in that hydrogen exacted by using the coke-oven gas is used as a gas for converter gas temperature swing adsorption cold blowing cooling, and the gas can be mixed with the converted gas after being cooled to prepare the methyl alcohol.
Description
Technical field
The present invention relates to the preparing technical field of methyl alcohol, belong to chemical technology field.
Background technology
Utilizing the converter gas through the alternating temperature adsorption cleaning to mix the technical process of back synthesizing methanol with the hydrogen that extracts from coke(oven)gas, it is rapid that converter gas alternating temperature adsorption cleaning need pass through normal temperature absorption, thermal regeneration and three cloth of cold blowing cooling.Cold blowing cooling in the converter gas alternating temperature adsorption process of going into operation at present is to adopt the nitrogen circulation cooling, needs to increase nitrogen circulating system.After the nitrogen circulation cooling; Adsorber will be full of nitrogen, and this part nitrogen will become rare gas element after entering into system for methanol synthesis, not only increase the consumption of nitrogen; Increase compression power consumption, and the nitrogen of entering system for methanol synthesis also can reduce methyl alcohol synthetic transformation efficiency.
Summary of the invention
The purpose of this invention is to provide the novel method of the cold blowing cooling in a kind of alternating temperature adsorption process of converter gas, avoid the facility investment of nitrogen cold place cooling, no longer consume nitrogen, reduce compression power consumption and also improve methyl alcohol synthetic transformation efficiency.
The technical scheme that the present invention adopts is: mainly be included in the alternating temperature adsorption process of converter gas and use the hydrogen that from coke(oven)gas, extracts as the gas to converter gas cold blowing cooling.This hydrogen can be used for mixing with converter gas after cooling produces methyl alcohol.The hydrogen here can be all hydrogen or the hydrogen partial that from coke(oven)gas, extracts.When only using the hydrogen partial that from coke(oven)gas, extracts to come cold blowing when cooling, the hydrogen that is not used for the cold blowing cooling that from coke(oven)gas, extracts also can mix with converter gas and the hydrogen that is used for the cold blowing cooling produces methyl alcohol.In the cold blowing temperature-fall period, after converter gas adsorber temperature is reduced to below 50 ℃, stop the logical hydrogen of this converter gas adsorber is adsorbed converter gas with this converter gas adsorber then.In the cold blowing temperature-fall period, the pressure of hydrogen approximates the top hole pressure of the hydrogen that from coke(oven)gas, extracts.
Compared with prior art, the invention has the beneficial effects as follows:
⑴ adopt the hydrogen that from coke(oven)gas, extracts as the gas that is used for the cold blowing cooling in the absorption of converter gas alternating temperature; Cancelled the nitrogen circulation cooling system; Avoided investment and the required power consumption of nitrogen circulation, reduced investment and energy saving purposes to reach to nitrogen circulating system;
⑵ cancelled the air cooling of converter gas alternating temperature adsorption of nitrogen and blown cooling, not only do not have nitrogen consumption, and do not influence the methyl alcohol Synthesis conversion, the hydrogen after the cold blowing in the adsorber with purify after converter gas mixes, hydrogen does not lose, and reaches energy saving purposes.
Description of drawings
Fig. 1 is the converter gas alternating temperature absorption cold blowing cooling schematic flow sheet in the inventive method, and adsorbs cold blowing cooling schematic flow sheet as the converter gas alternating temperature of embodiment 1;
Fig. 2 is the converter gas alternating temperature absorption cold blowing cooling schematic flow sheet in the inventive method, and adsorbs cold blowing cooling schematic flow sheet as the converter gas alternating temperature of embodiment 2;
Among Fig. 1,2, V1 is that coke(oven)gas is carried hydrogen system, and V2 is the converter gas temperature swing adsorption system; V3 is a mixing tank, and E is interchanger (heat exchanger), and 1 and 5 is the hydrogen that from coke(oven)gas, extracts; 2 are the hydrogen after the cold blowing, and 3 are the cold blowing hydrogen after the heat exchange, and 4 are the converter gas after purifying.
Embodiment
Below in conjunction with embodiment foregoing invention content of the present invention is done further to describe in detail.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment.Not breaking away under the above-mentioned technological thought situation of the present invention, according to ordinary skill knowledge and customary means, make various replacements and change, all should comprise within the scope of the invention.
Cold blowing cooling flow process in the alternating temperature absorption of the converter gas that following embodiment 1,2 is different operating modes.
Cold blowing cooling flow process in the alternating temperature absorption of the converter gas of present embodiment is following:
Flow process is as shown in Figure 1.From whole hydrogen 1 that coke(oven)gas extracts, flow is～23000 Nm
3/ h (in hydrogen and mixed 100,000 tons of/year methyl alcohol of converter gas that coke(oven)gas was extracted); Temperature is a normal temperature; Pressure approximates the top hole pressure of the hydrogen that from coke(oven)gas, extracts, and all gets into the converter gas adsorber that thermal regeneration is good adsorber is lowered the temperature, after this converter gas adsorber temperature is reduced to below 50 ℃; Stop the logical hydrogen of this converter gas adsorber is adsorbed converter gas with this converter gas adsorber then.Be used for to the hydrogen 2 after the converter gas adsorber cold blowing cooling through water cooler is cooled to below 50 ℃ after be used for methyl alcohol after purification rear converter gas 4 mixes and synthesize.
The flow process of the converter gas alternating temperature absorption cold blowing cooling of present embodiment is following:
Whole hydrogen flowing quantity～23000Nm that coke(oven)gas extracts
3/ h (in hydrogen and mixed 100,000 tons of/year methyl alcohol of converter gas) with coke(oven)gas was extracted.
Its flow process is as shown in Figure 2.The hydrogen partial 1 that coke(oven)gas extracts, flow is 6000～20000 Nm
3/ h; Temperature is a normal temperature; Pressure approximates the pressure of the hydrogen outlet that from coke(oven)gas, extracts, and this part hydrogen gets into the converter gas adsorber that thermal regeneration is good lowers the temperature to it, after this converter gas adsorber temperature is reduced to below 50 ℃; Stop the logical hydrogen of this converter gas adsorber, this converter gas adsorber drops into adsorption step.To the hydrogen 2 of converter gas adsorber cold blowing cooling through water cooler is cooled to below 50 ℃ after with purify after the remaining hydrogen 5 of converter gas 4 and coke(oven)gas extraction be used for methyl alcohol after mixing and synthesize.
Claims (7)
1. in the production technique that a kind prepares methyl alcohol with coke(oven)gas and converter gas, the method for cold blowing cooling in the alternating temperature adsorption process of converter gas is characterized in that: the hydrogen that from coke(oven)gas, extracts is adopted in the cold blowing cooling.
2. method according to claim 1 is characterized in that: be used for hydrogen after the cold blowing cooling and through cooling off after, be mixed for methyl alcohol with converter gas and synthesize.
3. method according to claim 2 is characterized in that: used hydrogen is all hydrogen that from coke(oven)gas, extract.
4. method according to claim 2 is characterized in that: used hydrogen is the part of the hydrogen that from coke(oven)gas, extracts.
5. method according to claim 4 is characterized in that: what be not used for the cold blowing cooling is mixed for producing methyl alcohol from the coke(oven)gas hydrogen that extracts and the hydrogen and the converter gas that are used for after cold blowing is lowered the temperature.
6. method according to claim 2 is characterized in that: after converter gas adsorber temperature is reduced to below 50 ℃, stop the logical hydrogen of this converter gas adsorber is adsorbed converter gas with this converter gas adsorber then.
7. method according to claim 1 is characterized in that: in the cold blowing temperature-fall period, the pressure of hydrogen approximates the top hole pressure of the hydrogen that from coke(oven)gas, extracts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105309475A CN101993339B (en) | 2010-11-04 | 2010-11-04 | Cold blowing cooling method for converter gas in production of methyl alcohol by using coke-oven gas and converter gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105309475A CN101993339B (en) | 2010-11-04 | 2010-11-04 | Cold blowing cooling method for converter gas in production of methyl alcohol by using coke-oven gas and converter gas |
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| Publication Number | Publication Date |
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| CN101993339A CN101993339A (en) | 2011-03-30 |
| CN101993339B true CN101993339B (en) | 2012-04-25 |
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| CN2010105309475A Active CN101993339B (en) | 2010-11-04 | 2010-11-04 | Cold blowing cooling method for converter gas in production of methyl alcohol by using coke-oven gas and converter gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941075A (en) * | 2012-11-06 | 2013-02-27 | 四川天一科技股份有限公司 | Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430316B (en) * | 2011-11-17 | 2014-06-25 | 四川天一科技股份有限公司 | Method of using methanol exhausted gas as regenerated gas and cold blowing air for temperature swing adsorption |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803746A (en) * | 2005-06-23 | 2006-07-19 | 昆山市迪昆精细化工公司 | Process for preparing methanol by making steel enterprises coke oven gas and converter gas as raw material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1742901A1 (en) * | 2004-05-07 | 2007-01-17 | Shell Internationale Research Maatschappij B.V. | System and process for synthesis of methanol |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803746A (en) * | 2005-06-23 | 2006-07-19 | 昆山市迪昆精细化工公司 | Process for preparing methanol by making steel enterprises coke oven gas and converter gas as raw material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941075A (en) * | 2012-11-06 | 2013-02-27 | 四川天一科技股份有限公司 | Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas |
| CN102941075B (en) * | 2012-11-06 | 2014-07-09 | 四川天一科技股份有限公司 | Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas |
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| CN101993339A (en) | 2011-03-30 |
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Address after: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 Chengdu hi tech Zone Innovation Service Center Patentee after: Haohua Chemical Technology Group Co.,Ltd. Address before: No. 5 high tech Zone Gaopeng road in Chengdu city of Sichuan Province in 610041 Patentee before: SICHUAN TIANYI SCIENCE AND TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200420 Address after: No. 5 high tech Zone Gaopeng road in Chengdu city of Sichuan Province in 610041 Patentee after: SOUTHWEST RESEARCH & DESIGN INSTITUTE OF CHEMICAL INDUSTRY Address before: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 Chengdu hi tech Zone Innovation Service Center Patentee before: Haohua Chemical Technology Group Co.,Ltd. |
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