CN101792366A - New method for producing methanol - Google Patents
New method for producing methanol Download PDFInfo
- Publication number
- CN101792366A CN101792366A CN200910256482A CN200910256482A CN101792366A CN 101792366 A CN101792366 A CN 101792366A CN 200910256482 A CN200910256482 A CN 200910256482A CN 200910256482 A CN200910256482 A CN 200910256482A CN 101792366 A CN101792366 A CN 101792366A
- Authority
- CN
- China
- Prior art keywords
- gas
- coal
- methanol
- raw material
- coke
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a new method for producing methanol, which comprises the following steps: (1) gasifying coal water slurry to prepare gasified coal gas, desulfurizing the gasified coal gas for standby, collecting coked coal gas generated by coking plants, and desulfurizing the coked coal gas for standby; (2) mixing two raw material gas prepared in the step (1) according to the ratio of CO to H2 when methanol is prepared to obtain the mixed raw material gas; and (3) compressing the mixed raw material gas, and then, feeding the compressed mixed raw material gas into a methanol synthesizer to obtain methanol products. In the invention, coal slime is used for preparing coal water slurry for gasifying, the gasified coal gas and the coked coal gas are used for simultaneously co-producing CO and H2 for preparing methanol, and the process is reasonable. A coal gasification plant and a coal coking plant are combined for carrying out production, thereby reducing the investment, increasing the yield of methanol, reducing the exhaust emission, being favorable for protecting environment, improving the economic benefit, and having obvious social benefit and economic benefit.
Description
Technical field
The invention belongs to the methyl alcohol synthesis technical field, particularly relate to the processing method of utilizing gasification gas and coke gas to produce methyl alcohol.
Background technology
At present, methyl alcohol synthetic method is many, and more common method is favourable produces methyl alcohol with coal water slurry gasification gasification gas that produces and the coke-oven gas that utilizes the coke-oven plant to produce.
Producing gas preparation methyl alcohol with coal water slurry gasification is example, gasification gas composition behind its coal water slurry gasification such as following table (volume %):
| Gas composition | Coal water slurry gasification coal gas |
| ??CO | ??46.5 |
| ??H 2 | ??33.1 |
| ??CO 2 | ??19 |
| ??CH 4 | ??0 |
| ??N 2 | ??1.2 |
As can be seen from the above table, vapourizing furnace gasification gas CO content is very high, H
2Deficiency needs to adopt the water vapor conversion that CO is transformed to CO
2And H
2, CO
2Content is higher after the conversion, as exhaust gas emission.Big type coal gasification methanol synthetizing technology effluxes a large amount of CO
2Gas.
The composition of coke-oven plant's coke-oven gas see the following form (volume %):
| Gas composition | Content |
| ??CO | ??5.5-7 |
| ??H 2 | ??54-59 |
| ??CO 2 | ??1-3.0 |
| ??CH 4 | ??24-28 |
[0008]
| ??N 2 | ??3-5.0 |
| ??CnHm | ??2-3.0 |
| ??O 2 | ??0.3-0.7 |
The coke-oven gas synthesizing methanol need be transformed to methane CO and H
2, the methane conversion has dual mode, water vapor conversion and the conversion of pure oxygen partial oxidation process.
Ripe with coke-oven gas system methyl alcohol technology, a lot of in the producer that builds, because coke-oven gas itself has the H up to 58%
2, a large amount of H are arranged again in the methane conversion process
2Produce, with coke-oven gas synthesizing methanol H
2Excessive, the CO deficiency, need efflux and speed to exit 490,000 m every day behind 2,000,000 tons of coke-oven plant's coke-oven gas synthesizing methanols
3, efflux 1.8 hundred million m every year
3, this part gas sweetening degree height, hydrogen content 90%, can be directly used in synthetic, enormous amount, it is serious to efflux waste.
From as can be seen above-mentioned, excessive with coal water slurry coal gas synthesizing methanol CO separately, H
2Deficiency needs to diffuse 28% CO after the conversion
2Separately with coke-oven gas synthesizing methanol H
2Excessive, the CO deficiency needs to diffuse 40% H after the conversion
2Above-mentioned dual mode is owing to CO and H in the unstripped gas
2Ratio does not meet the needs of preparation methyl alcohol, and a large amount of remaining gases efflux, and cause the waste and the environmental pollution of a large amount of energy.
Summary of the invention
Purpose of the present invention just is to provide a kind of coal water slurry gasification is produced methyl alcohol and produced these two kinds of novel methods that modes of production combination is used to produce methyl alcohol of methyl alcohol with coke-oven gas.
Its concrete technical scheme is as follows:
A kind of novel method of producing methyl alcohol, it includes following steps:
(1), coal water slurry gasification is prepared after the gasification gas desulfurization stand-by; Stand-by after the coke gas desulfurization that the collection coke-oven plant produces;
CO and H during (2), by preparation methyl alcohol
2Ratio two kinds of unstripped gass that make of step (1) are mixed, obtain mixing raw material gas;
(3), send into methanol synthesizer after above-mentioned mixing raw material air pressure contracted, make methanol product.
Also shift step can be arranged in the above-mentioned steps 1, be about to feed water vapor respectively in above-mentioned two kinds of unstripped gass, the portion C O in the coal water slurry coal gas is transformed to CO
2And H
2, the part methane in the coke gas is transformed to CO and H
2
The present invention carries out gasification with coal water slurry, gasification gas and coke-oven gas combined production of methanol CO and H
2Complementation, technology is reasonable.Gasification and the coproduction of carbonization of coal two factories can reduce investment, increase methanol output, and exhaust gas emission is few, helps protecting environment, increases economic efficiency, and has obvious social and economic benefit.Gasification gas production simultaneously and the complementation of coke(oven)gas conversion process, methane conversion in the coke-oven gas needs a large amount of water vapors to be supplied with by gas purification process by-product water vapor, the reluctant wastewater containing phenol and cyanide that contains that coking produced can mix in the coal water slurry when coal water slurry prepares, a part goes to washing mill to use for coal washing, reduces sewage load.
Embodiment
The following technology contents of not addressing all can adopt or use for reference prior art.
At first will prepare coal water slurry gasification coal gas and collect the coke gas of coke-oven plant, and respectively above-mentioned raw materials gas is carried out desulfurization and conversion, wherein a large amount of water vapors of the needs of the methane conversion in the coke-oven gas can be supplied with by the water vapor of coal water slurry gasification gas purification process by-product, the reluctant wastewater containing phenol and cyanide that contains that coking produced can mix when coal water slurry prepares in the coal water slurry, and a part goes to washing mill to use for coal washing.CO and H during then according to preparation methyl alcohol
2Reaction ratio above-mentioned former regulating the flow of vital energy mixed, send in the methanol synthesizer after the compression of mixed unstripped gas, make methanol product through rectifying, the wherein synthetic unnecessary H in back
2Utilize after can reclaiming recompression.
Claims (2)
1. novel method of producing methyl alcohol is characterized in that it includes following steps:
(1), coal water slurry gasification is prepared after the gasification gas desulfurization stand-by; Stand-by after the coke gas desulfurization that the collection coke-oven plant produces;
CO and H during (2), by preparation methyl alcohol
2Ratio two kinds of unstripped gass that make of step (1) are mixed, obtain mixing raw material gas;
(3), send into methanol synthesizer after above-mentioned mixing raw material air pressure contracted, make methanol product.
2. the novel method of production methyl alcohol according to claim 1 is characterized in that: also have shift step in the step 1, be about to feed water vapor respectively in above-mentioned two kinds of unstripped gass, the portion C O in the coal water slurry coal gas is transformed to CO
2And H
2, the part methane in the coke gas is transformed to CO and H
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910256482A CN101792366A (en) | 2009-12-31 | 2009-12-31 | New method for producing methanol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910256482A CN101792366A (en) | 2009-12-31 | 2009-12-31 | New method for producing methanol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101792366A true CN101792366A (en) | 2010-08-04 |
Family
ID=42585312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910256482A Pending CN101792366A (en) | 2009-12-31 | 2009-12-31 | New method for producing methanol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101792366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016297A (en) * | 2015-07-03 | 2015-11-04 | 赛鼎工程有限公司 | Preparation method of synthetic gas |
| CN114075098A (en) * | 2020-08-19 | 2022-02-22 | 北京诺维新材科技有限公司 | Methanol separation method |
-
2009
- 2009-12-31 CN CN200910256482A patent/CN101792366A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016297A (en) * | 2015-07-03 | 2015-11-04 | 赛鼎工程有限公司 | Preparation method of synthetic gas |
| CN114075098A (en) * | 2020-08-19 | 2022-02-22 | 北京诺维新材科技有限公司 | Methanol separation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103160296B (en) | Pyrolysis gasification coupling integrated poly-generation system and process for coal chemical industry | |
| CN102660330B (en) | Method for co-producing various chemical products by taking coal, petroleum, natural gas and salt as raw materials | |
| EP3390333A1 (en) | Integrated system and method for producing methanol product | |
| CN111320528B (en) | Method and system for preparing ethanol by comprehensively utilizing tail gas of steel mill | |
| CN102703107B (en) | Method for manufacturing liquid hydrocarbon product with synthetic gas produced by biomass | |
| CN109020780B (en) | System and method for preparing methanol by coal gasification coupled coal coking | |
| CN102050699B (en) | Process for co-producing methanol and ammonia by utilizing calcium carbide tail gas | |
| CN104531186A (en) | Method for producing tar and hydrocarbon fuel products with coal | |
| CN1974732A (en) | Process of preparing synthesized gas with gasified gas and pyrolyzed gas | |
| CN104177227A (en) | Method for preparing methanol and coproducing natural gas from coke oven gas and coal gas | |
| CN110862839B (en) | System and method for co-production of methanol from coal-based natural gas | |
| CN102180767A (en) | Method and device for jointly producing methanol, ammonia and acetic acid by using coal and natural gas | |
| MX2023008632A (en) | Biogas conversion to mixed alcohols. | |
| CN101870479A (en) | Fischer-Tropsch synthesis cogeneration process for synthesizing ammonia | |
| CN203159536U (en) | Coal chemical industry pyrolysis and gasification coupling integrated poly-generation system | |
| CN101792366A (en) | New method for producing methanol | |
| CN106995724A (en) | A kind of system and method that water-gas is prepared with oven gas and water-coal-slurry | |
| CN114074919A (en) | Method for producing hydrogen by converting municipal refuse | |
| CN109776261B (en) | Method and system for directly preparing alcohol from coke oven gas | |
| CN116478013A (en) | Method for preparing methanol by hydrogenating biomass gasification synthesis gas | |
| CN102443439A (en) | Method for preparing synthetic gas by gasifying on fixed bed under increased pressure | |
| CN211921378U (en) | System for steel mill tail gas comprehensive utilization system ethanol | |
| EP2692415B1 (en) | The manner of and the device for increasing biogas net calorific value | |
| CN108299158B (en) | Coal-to-methanol system and method integrating chemical chain and carbon dioxide utilization technology | |
| CN1847208A (en) | Material gas stage associating process and apparatus for producing methanol and ammonia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100804 |