Dehydrogenation of LPG or NGL and flexible utilization of the olefins thus obtained

US10227279B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Guido Stochniol · Haltern am See, DE
• Andreas Wolff · Munich, DE
• Stephan Peitz · Johannesweg, DE

Key dates

• Filing date: Aug 29, 2017
• Grant date: Mar 12, 2019
• Expiry date: Aug 29, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/755
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The object of the invention is to specify a process with which both C5 and C9 aldehydes can be produced economically. Here, the process should be able to to be supplied with the lowest possible dependence on raw material suppliers and also should be able to react flexibly to fluctuations in demand with respect to C5 and C9 aldehydes. The use of resources should also be optimized. The process proposed uses LPG or NGL as raw material. The process according to the invention essentially differs from known LPG-based processes in that the intermediate obtained, after dehydrogenation and removal of by-products, is divided into two portions. C9 aldehyde is produced from the first portion by oligomerization and hydroformylation while C5 aldehyde is obtained by hydroformylation of the second portion. This has the critical advantage that it is possible to divide the intermediate flexibly into the two portions so that either more C5 or more C9 aldehydes can be produced depending on the respective demand.