Process for starting-up a heterogeneously catalyzed partial...

Details Process for starting-up a heterogeneously catalyzed partial... Process for starting-up a heterogeneously catalyzed partial...

2008-04-22

2011-12-13

Oh, Victor (Department: 1622)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S532000

Reexamination Certificate

active

08076510

ABSTRACT:
A process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid over a fixed catalyst bed disposed in a tube bundle reactor cooled by a heat exchange medium, wherein the temperature of the heat exchange medium is ≧290° C. and the temperature of that reactor plate surface which faces the reaction gas entry mixture and the temperature of the reaction gas entry mixture itself are ≦285° C.

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