Technip E&c Limited

T.en E&c Ltd

Nakul Thakar

Stephen Roy Partington

Stephen James Smith

Thomas Mark Douglas

The present invention provides a process for the preparation of ethene by vapor phase chemical dehydration of a feed comprising ethanol and optionally water and/or ethoxyethane, said process comprising contacting a dried supported heteropoly acid catalyst in a reactor with the feed-stream having feed temperature of at least 200&#xb0; C.; wherein the pressure inside the reactor is at least 0.80 MPa but less than 1.80 MPa; and before the supported heteropolyacid catalyst is contacted with the feed-stream having a feed temperature of at least 200&#xb0; C., the process is initiated by: (i) drying a supported heteropolyacid catalyst in a reactor under a stream of inert gas having a feed temperature of from above 100&#xb0; C. to 200&#xb0; C.; and (ii) contacting the dried supported heteropolyacid catalyst with an ethanol-containing vapor stream having a feed temperature of from above 100&#xb0; C. to 160&#xb0; C.

Process for preparing ethene

The present invention provides a process for the preparation of ethene by vapor phase chemical dehydration of a feed-stream comprising ethanol and optionally water and/or ethoxy ethane, said process comprising contacting a dried supported heteropolyacid catalyst in a reactor with the feed-stream having a feed temperature of at least 200&#xb0; C.; wherein before the supported heteropolyacid catalyst is contacted with the feed-stream having a feed temperature of at least 200&#xb0; C., the process is initiated by: (i) drying a supported heteropolyacid catalyst in a reactor under a stream of inert gas having a feed temperature of from above 100&#xb0; C. to 200&#xb0; C.; and (ii) contacting the dried supported heteropolyacid catalyst with an ethanol-containing vapor stream having a feed temperature of from above 100&#xb0; C. to 160&#xb0; C.

Process for the treatment of an alcohol composition containing nitrogen-containing contaminants by contacting the alcohol composition in the vapor phase with an adsorbent in an adsorption zone.

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East Yorkshire, United Kingdom

Nakul Thakar