C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/055 (2006.01) B01J 8/00 (2006.01) B01J 8/06 (2006.01) C07C 69/15 (2006.01)
Patent
CA 2361161
A process for the production of vinyl acetate (VA) by reaction in the vapor phase of ethylene, oxygen and acetic acid as reactants, comprising passing at a temperature sufficient to initiate the reaction, a feed gas comprising said reactants and continuously or intermittently containing liquid acetic acid and/or non-volatile components, through a filter and distribution bed of inert material having throughout its volume substantial intercommunicating open spaces among the solid portions, and thence through a plurality of tubes each containing a bed of catalyst for the reaction, and withdrawing a product gas comprising VA. The filter and distribution bed acts to filter out the liquid acetic acid and/or non-volatile components and distribute more evenly the feed gas into the tubes.
L'invention concerne un procédé de production d'acétate de vinyle (AV) par réaction en phase vapeur d'éthylène, d'oxygène et d'acide acétique utilisés comme réactifs, consistant à faire passer, à une température suffisante pour amorcer la réaction, un gaz d'alimentation contenant lesdits réactifs, et contenant de façon continue ou intermittente de l'acide acétique liquide et/ou des constituants non volatils, à travers un filtre et un lit de distribution à matériau inerte présentant dans tout son volume des espaces substantiels d'intercommunication ouverts parmi les parties solides et de là à travers une pluralité de tubes contenant chacun un lit de catalyseur de réaction, puis à extraire de l'acétate de vinyle contenant du gaz produit. Le filtre et le lit de distribution filtrent l'acide acétique liquide et/ou les constituants non volatils et répartissent plus uniformément le gaz d'alimentation dans les tubes.
Celanese International Corporation
Celanese International Corporation Under The Laws Of The State O
Smart & Biggar
LandOfFree
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