Dow Global Technolgoies LLC

Basf Se Corporation

Karsten Luecke

Joaquim Henrique Teles

Ulrich Mueller

Andrei-Nicolae Parvulescu

Markus Weber

Dominic Riedel

Ulrike Wegerle

Heiner Schelling

Daniel Urbanczyk

Meinolf Weidenbach

Christian Mueller

Nicolai Tonio Woerz

Werner J Witzl

Marvin Kramp

Bernd Metzen

Tobias Keller

Holger Baer

Eckhard Goertz

The present invention is related to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, water, organic solvent, and propene; (iv) separating propene from the effluent stream by distillation, comprising (iv.1) subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous top stream Senriched in propene compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream Senriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (iv.2) returning a condensed portion of the stream Sto an upper part of the distillation unit.

Process for preparing propylene oxide

The present invention provides a process for the production of chlorohydrins, comprising generating a chlorohydrins processing stream and contacting at least a portion of a surface comprising a austenitic stainless steel with the chlorohydrin processing stream. It has now been surprisingly discovered that certain stainless steels can be utilized to form portions, or the entirety of, one or more pieces of processing equipment utilized in such processes.

Chlorohydrin processing equipment comprising stainless steel

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Stade, Germany

Karsten Luecke