Method and system for the production of methanol

US12030838B2 · kind B2 · utility

Assignees

• thyssenkrupp Uhde GmbH · DE
• thyssenkrupp AG · DE

Inventors

• Alexander Schulz · Rietberg, DE
• Steffen Schirrmeister · Mülheim an der Ruhr, DE

Key dates

• Filing date: Mar 7, 2022
• Grant date: Jul 9, 2024
• Expiry date: Mar 24, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing methanol by a methanol synthesis reaction of carbon dioxide with hydrogen may involve a distillation step and a condensation step following the synthesis of a crude methanol. A volatile component and water may be separated off from a methanol-containing product stream, and a gas stream containing a volatile component that has been separated off may be discharged at least partially as offgas. At least part of the gas stream that has been separated off may be recirculated into the methanol synthesis reaction. A plant for preparing methanol can store or utilize electric power generated from renewable energy sources and provide facilities for discharging the offgas stream, which can be purified by catalytic after-combustion. Alternatively, the plant can be configured without discharge of an offgas substream, or the offgas streams are so small that they can be released without treatment into the environment at a suitable position.