The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Apr. 06, 2018
Linde Aktiengesellschaft, München, DE;
LINDE AKTIENGESELLSCHAFT, Munich, DE;
Abstract
The invention relates to a method () of obtaining one or more olefins, in which, using an oxidative coupling of methane (), a gas mixture comprising hydrogen, methane, carbon monoxide and higher-boiling hydrocarbons than methane is formed and is subjected to a low-temperature separation (-), characterized in that the low-temperature separation (-) is conducted using a rectification column () having a first separation region (), a second separation region () arranged above the first separation region (), and a condenser-evaporator (), wherein the gas mixture is cooled, fed at least partly as first separation feed into the first separation region () and subjected to a first rectification in the first separation region () to form a first tops gas and a first bottoms liquid, wherein, using a first proportion of the first tops gas in the condenser-evaporator (), a condensate which is recycled to the first separation region and, using a second proportion of the tops gas, a second separation feed which is fed into the second separation region () are formed, and wherein the second separation feed is subjected to a second rectification in the second separation region to form a second tops gas and a second bottoms liquid.