Process of producing methanol
First Claim
1. In the catalytic production of methanol from a synthesis gas which contains the components H2, CO and CO2 and which is supplied to are reacted over a catalyst in a synthesis reactor at temperatures from 220°
- to 300°
C. and under a pressure in the range from 20 to 120 bars to produce a product mixture that contains methanol vapor and is withdrawn from the synthesis reactor, the product mixture is cooled to temperatures in the range from 20°
to 60°
C. to form a condensate which contains water, methanol and methyl formate and to form a gas mixture which contains H2, CO and CO2, the gas mixture is recycled at least in part to the synthesis reactor, and methanol is separated by distillation from the condensate, the improvement which comprises separating from the condensate which contains water, methanol and methyl formate a fraction which comprises 10 to 100% by weight methyl formate, and adding said fraction to the synthesis gas which is supplied to the synthesis reactor.
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Abstract
Methanol is catalytically produced from a synthesis gas which contains H2, CO and CO2 in a synthesis reactor at temperatures from 220° to 300° C. and under a pressure in the range from 20 to 120 bars. A product mixture which contains methyl formate is withdrawn from the synthesis reactor and is cooled to temperatures in the range from 20° to 60° to provide a condensate which contains methanol, water and methylformate. A gas mixture which contains H2, CO and CO2 is formed at the same time. A fraction which comprises 10 to 100% by weight methyl formate is separated from the condensate and is admixed with the synthesis gas which is fed to the synthesis reactor.
38 Citations
6 Claims
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1. In the catalytic production of methanol from a synthesis gas which contains the components H2, CO and CO2 and which is supplied to are reacted over a catalyst in a synthesis reactor at temperatures from 220°
- to 300°
C. and under a pressure in the range from 20 to 120 bars to produce a product mixture that contains methanol vapor and is withdrawn from the synthesis reactor, the product mixture is cooled to temperatures in the range from 20°
to 60°
C. to form a condensate which contains water, methanol and methyl formate and to form a gas mixture which contains H2, CO and CO2, the gas mixture is recycled at least in part to the synthesis reactor, and methanol is separated by distillation from the condensate, the improvement which comprises separating from the condensate which contains water, methanol and methyl formate a fraction which comprises 10 to 100% by weight methyl formate, and adding said fraction to the synthesis gas which is supplied to the synthesis reactor. - View Dependent Claims (2, 3, 4, 5, 6)
- to 300°
Specification
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- Resources
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Current AssigneeMetallgesellschaft AG (GEA Group AG)
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Original AssigneeMetallgesellschaft AG (GEA Group AG)
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InventorsKonig, Peter, Moller, Friedrich-Wilhelm, Supp, Emil
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Primary Examiner(s)MARS, HOWARD
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Application NumberUS08/143,807Time in Patent Office384 DaysField of Search518/713, 518/728US Class Current518/713CPC Class CodesC07C 29/1516 MultistepsC07C 31/04 MethanolY02P 20/52 using catalysts, e.g. selec...
