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AssigneeBASF SE
InventorsFlorian WINKLER, Virginie LANVER, Nils BOTTKE, Manuel Frederik GENTZEN, Silvia TAURO
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A process for synthesis of dimethyl ether is proposed, in which a feed gas mixture (E) containing carbon dioxide and/or carbon monoxide and hydrogen is guided through reaction tubes (1) of a cooled shell and tube reactor (10) that are equipped with a first catalyst and a second catalyst, in which the carbon dioxide present in the feed gas mixture (E) and/or the carbon monoxide present in the feed gas mixture is at least partly reacted over the first catalyst with the hydrogen present in the feed gas mixture to give methanol, and in which, in the same shell and tube reactor (10), the methanol is at least partly converted over the second catalyst to dimethyl ether. It is envisaged that the reaction tubes (1) are equipped with the first and second catalysts in the form of a structured bed, where the structured bed has two to four regions (11, 12, 13) in which the first and second catalysts are provided in different physical mixtures, where the regions (11, 12, 13) are arranged such that the concentration of the first catalyst increases in a flow direction through the reaction tubes (1). Also proposed is a plant (100) for implementation of such a process.
-13. (canceled)
A process for synthesis of dimethyl ether, in which a feed gas mixture containing carbon dioxide and/or carbon monoxide and hydrogen is guided through reaction tubes of a cooled shell and tube reactor hat are equipped with a first catalyst and a second catalyst, in which the carbon dioxide present in the feed gas mixture and/or the carbon monoxide present in the feed gas mixture is at least partly reacted over the first catalyst with the hydrogen present in the feed gas mixture to give methanol, and in which, in the same shell and tube reactor, the methanol is at least partly converted over the second catalyst to dimethyl ether, wherein the reaction tubes are equipped with the first and second catalysts in the form of a structured bed, where the structured bed has two to four regions in which the first and second catalysts are provided in different physical mixtures, where the regions are arranged such that the concentration of the first catalyst increases in a flow direction through the reaction tubes.
A plant for synthesis of dimethyl ether which has a cooled shell and tube reactor having reaction tubes that are equipped with a first catalyst and a second catalyst, and which is set up to guide a feed gas mixture containing carbon dioxide and/or carbon monoxide and hydrogen through the reaction tubes of the shell and tube reactor, to at least partly react the carbon dioxide present in the feed gas mixture and/or the carbon monoxide present in the feed gas mixture with the hydrogen present in the feed gas mixture over the first catalyst to give methanol, and in which, in the same shell and tube reactor, to at least partly convert the methanol over the second catalyst to dimethyl ether, wherein the reaction tubes are equipped with the first and second catalysts in the form of a structured bed, where the structured bed has two to four regions in which the first and second catalysts are provided in different physical mixtures, where the regions are arranged such that the concentration of the first catalyst increases in a flow direction through the reaction tubes.
Dependencies are inferred from the claim text.