Process and a plant for the production of methanol
AssigneeHaldor TopsøE A/S
InventorsSøren Grønborg Eskesen, Per Juul Dahl, Emil Andreas Tjärnehov, Max Thorhauge
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Abstract
A process for the production of methanol from synthesis gas via an equilibrium reaction is conducted in a methanol pre-converter within a certain operational window, said operational window being defined by the area below an approximately linear curve of the partial pressure of carbon monoxide vs. the boiling water temperature for water temperatures between 210 and 270° C. Methanol of different product grades may be obtained by operating in specific areas of the operational window.
Claims6
A process for the production of methanol from synthesis gas via an equilibrium reaction proceeding at elevated temperatures under elevated pressure according to the synthesis reactions
- CO+2H2↔CH3OH+heat (1)
- CO2+3H2↔CH3OH+H2O+heat (2)
- CO+H2O↔CO2+H2+heat (3)
- in the presence of a catalyst, said process being conducted in a methanol pre-converter within an operational window, said operational window being
- defined by the area below an approximately linear curve of the partial pressure of carbon monoxide vs. the boiling water temperature for water temperatures from 210 to 270° C., where the partial pressure of carbon monoxide increases from 20 kg/cm2 at 210° C. to 32.5 kg/cm2 at 270° C., and
- divided into two areas by an estimated by-product curve of the partial pressure of carbon monoxide vs. the boiling water temperature, said areas leading to the production of methanol of different product qualities.
Dependencies are inferred from the claim text.