公开(公告)号：US20250034070A1

公开(公告)日：2025-01-30

申请号：US18715783

申请日：2022-12-06

Applicant: BASF SE

Inventor： Florian WINKLER ,  Virginie LANVER ,  Nils BOTTKE ,  Manuel Frederik GENTZEN ,  Silvia TAURO

IPC: C07C41/09 ,  B01J8/06 ,  C07C29/154

Abstract: 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.