L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Lurgi Gmbh

Air Liquide Global E&c Solutions Germany Gmbh

Thomas Renner

Martin Rothaemel

Frank Castillo-Welter

Stephane Haag

Roberta Olindo

Henning Buchold

Hermann Bach

Martin Gorny

Peter Mitschke

Theis Ohlhaver

Michael Wilken

Stéphane Haag

Uwe Finck

Martin ROTHÄMEL

Martin Dr Rothaemel

Eckhard Dr Seidel

A process for producing olefins from oxygenates includes the following steps:

Process and plant for producing olefins from oxygenates

A process for producing olefins from oxygenates comprises the following steps:

A process for producing short-chain olefins by conversion of oxygenates in a multi-stage fixed-bed reactor, in which the individual stages for reaction zones are covered with beds of a granular, form-selective zeolite catalyst and the feed mixture containing oxygenates is added distributed over the reaction stages. An increase of the availability of the fixed-bed reactor for the olefin production with the same or an increased yield of short-chain olefins is achieved in that one or more reaction zones are charged with a distinctly reduced mass flow of the feed mixture containing oxygenates, wherein the reduced mass flow fraction is distributed over other reaction zones.

Process for producing short-chain olefins with prolonged cycle time

A process and a plant for producing an olefin stream from a hydrocarbon mixture feed stream, wherein the olefin stream is depleted as regards its content of oxygen-containing organic compounds (oxygenates) as compared to the feed stream. The hydrocarbon mixture feed stream is charged to a separation column operated by a thermal separation process, for example to a distillation column, wherein a material stream enriched in oxygenates is withdrawn via a side outlet and removed from the process. The process according to the invention is particularly useful for processing the product streams obtained in the olefin synthesis by an OTO process.

Method and system for producing low-oxygenate OLEFIN flows

A process and a plant for producing C-Colefins, in particular propylene, from an educt mixture containing steam as well as methanol vapor and/or dimethyl ether vapor. The educt mixture is reacted in at least one first reactor on a granular, form-selective zeolite catalyst to obtain a reaction mixture including low-molecular olefins and gasoline hydrocarbons, which in a first separating device is separated into a mixture rich in C-Colefins, a mixture rich in Cgasoline hydrocarbons, and an aqueous phase, wherein the mixture rich in gasoline hydrocarbons is mixed with an inert medium, the mixture thus obtained is reacted in at least one second reactor on a granular zeolite catalyst to obtain a product mixture including C-Colefins, and this product mixture is recirculated to the first separating device, and wherein the mixture rich in Cgasoline hydrocarbons is separated in a second separating device into a product stream containing C-Chydrocarbons and a product stream containing Chydrocarbons, before being supplied to the second reactor, and only the product stream containing Chydrocarbons is supplied to the second reactor, whereas the product stream containing C-Chydrocarbons together with the educt mixture is supplied to the at least one first reactor.

Process and plant for producing C2-C4 olefins from methanol and/or dimethyl ether with increased yield

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Frankfurt am Main, Germany

Thomas Renner