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. 31, 2018
Filed:
Dec. 15, 2015
L'air Liquide, Societe Anonyme Pour I'etude ET I'exploitation Des Procedes Georges Claude, Paris, FR;
Frank Castillo-Welter, Friedrichsdorf, DE;
Stephane Haag, Frankfurt am Main, DE;
Lin Lin, Frankfurt am Main, DE;
Martin Rothamel, Frankfurt am Main, DE;
Abstract
The present invention relates to a plant and a process for producing propylene at least one oxygenate, comprising a reactor for converting the reactant mixture into a product mixture which comprises propylene and also aliphatic and aromatic Chydrocarbons, at least one distillation column for removing a Cstream, the Cstream comprising at least 90 wt % of the aliphatic and aromatic Chydrocarbons of the product mixture, an extractive distillation column for separating the Cstream into an aromatics stream and an aliphatics stream, the aliphatics stream comprising at least 90 wt % of the aliphatics of the Cstream, and the aromatics stream comprising at least 90 wt % of the aromatics of the Cstream, and an aliphatics recycle line for at least partial recycling of the aliphatics stream to the reactor. According to the invention, an aromatics recycle line is provided which returns the aromatics stream at least partially as extractant into the extractive distillation column.