Process for the epoxidation of propene

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United States of America Patent

PATENT NO 10399952
APP PUB NO 20190100501A1
SERIAL NO

16086309

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Abstract

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During start-up of a continuous epoxidation of propene with hydrogen peroxide in a methanol solvent with a shaped titanium silicalite catalyst in a tube bundle reactor with a cooling jacket, cooling medium is fed at the rate for full load of the reactor with a constant entry temperature of from 20° C. to 50° C., methanol solvent is fed at a rate of from 50 to 100% for full load of the reactor, hydrogen peroxide is fed at a rate that starts with no more than 10% of the rate for full load and is increased continuously or stepwise to maintain a maximum temperature in the fixed bed of no more than 60° C. and a difference between the maximum temperature in the fixed bed and the cooling medium entry temperature of no more than 20° C., and propene is fed at a rate of from 20 to 100% of the rate for full load, increasing the feeding rate when the molar ratio of propene to hydrogen peroxide reaches the molar ratio for full load.

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Patent Owner(s)

Patent OwnerAddress
THYSSENKRUPP UHDE GMBHFRIEDRICH-UHDE-STR 15 DORTMUND 44141

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bernhard, Maik Frankfurt, DE 4 15
Bredemeyer, Niels Waltrop, DE 5 19
Brendel, Marc Bruchköbel, DE 9 30
Jaeger, Bernd Bickenbach, DE 27 275
Kolbe, Bärbel Witten, DE 5 26
Ullrich, Norbert Essen, DE 15 94
Wöll, Wolfgang Maintal, DE 8 58

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