Method and system for producing olefins

US11014860B2 · kind B2 · utility

Assignee

• Linde GmbH · DE

Inventors

• Helmut Fritz · Munich, DE
• Mathieu Zellhuber · Martinsried, DE
• Anton Wellenhofer · Hersbruck, DE
• Martin F. Schubert · Mountain View, US
• Florian Winkler · Munich, DE

Key dates

• Filing date: Oct 20, 2017
• Grant date: May 25, 2021
• Expiry date: Nov 10, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25J2290/90
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for producing one or more olefins is proposed in which a reaction input containing one or more paraffins is formed and in which a portion of the paraffin(s) present in the reaction input is converted by oxidative dehydrogenation into the olefin(s) to obtain a process gas, wherein the process gas contains at least the olefin(s), the unconverted paraffin(s), oxygen and carbon monoxide and wherein at least a portion of the process gas is subjected to a low temperature separation in which at an operating pressure level one or more gas fractions enriched in oxygen and carbon monoxide compared to the process gas are formed. It is provided that in the low temperature separation in the formation and/or for the conduction of the or at least one of the gas fractions one or more containers and/or one or more conduits having a burst pressure of at least ten times the operating pressure level are used and that the container or at least one of the containers via the or at least one of the conduits is connected to one or more heat exchangers, wherein a total length of the or of the at least one conduit between the or the at least one container and the heat exchanger(s) is not more than …