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

Süd-Chemie Ip Gmbh & Co Kg

Roberta Olindo

Frank Castillo-Welter

Stephane Haag

Thomas Renner

Martin Rothaemel

Johannes Lercher

Friedrich Schmidt

Götz Burgfels

Lay Hwa Ong

Martin Gorny

Theis Ohlhaver

Stéphane Haag

Stefan Klingelhöfer

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

The invention relates to a novel catalyst based on zeolite, the production of that catalyst, and the use of the catalyst in a method for producing lower olefins from oxygenates and for oligomerizing olefins. The novel catalyst has a SiO/AlOweight ratio of 2 to 9, a BET surface of 250 to 500 m/g, and an Na content under 200 ppm. The catalyst includes a crystalline alumosilicate zeolite and a binder. The catalyst is characterized in that the ratio of the peak heights of its IR absorption bands v=3610 cm&#xb1;20 cm/v=3680 cm&#xb1;20 cmis greater than 1.8.

Catalyst based on zeolite for producing olefins and for oligomerizing olefins

Growing community of inventors

Frankfurt am Main, Germany

Roberta Olindo