Process and plant for producing synthetic fuels

US8524970B2 · kind B2 · utility

Assignee

• Lurgi GmbH · DE

Inventors

• Martin Rothaemel · Frankfurt am Main, DE
• Uwe Fincke · Brekstad, NO
• Holger Dropsch · Nidderau, DE
• Henning Buchold · Hanau, DE

Key dates

• Filing date: Apr 29, 2008
• Grant date: Sep 3, 2013
• Expiry date: Jul 12, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In a process for producing synthetic fuels from an educt mixture containing hydrogen and oxygenates, such as methanol and/or dimethyl ether, the educt mixture is reacted on a catalyst in a first process stage to obtain a hydrocarbon product containing olefins with preferably 2 to 8 carbon atoms. In a second process stage the hydrocarbon product is oligomerized to long-chain olefins, from which gasoline and Diesel products are obtained. The hydrocarbon product obtained in the first process stage is separated into a liquid phase and a gaseous phase. The gaseous phase is supplied to the second process stage. The liquid phase is separated into a mixture rich in C6− hydrocarbons and a mixture containing C7+ hydrocarbons and aromatics. The mixture rich in C6− hydrocarbons is supplied to the second process stage. The mixture containing C7+ hydrocarbons −+ and aromatics can be admixed to the gasoline product for quality improvement.