Invention Grant
US08148570B2 Process for preparing vinyl acetate with utilization of the heat of reaction 有权
利用反应热制备乙酸乙烯酯的方法

  • Patent Title: Process for preparing vinyl acetate with utilization of the heat of reaction
  • Patent Title (中): 利用反应热制备乙酸乙烯酯的方法
  • Application No.: US12093502
    Application Date: 2006-10-30
  • Publication No.: US08148570B2
    Publication Date: 2012-04-03
  • Inventor: Harald Michl
  • Applicant: Harald Michl
  • Applicant Address: DE Munich
  • Assignee: Wacker Chemie AG
  • Current Assignee: Wacker Chemie AG
  • Current Assignee Address: DE Munich
  • Agency: Brooks Kushman P.C.
  • Priority: DE102005054411 20051115
  • International Application: PCT/EP2006/067933 WO 20061030
  • International Announcement: WO2007/057297 WO 20070524
  • Main IPC: C07C67/48
  • IPC: C07C67/48
Process for preparing vinyl acetate with utilization of the heat of reaction
Abstract:
Vinyl acetate is prepared by a) continuous gas-phase reaction of ethylene, acetic acid and oxygen at 1 to 30 bar and 130° C. to 200° C., the process heat being removed by heat exchange with water at 120° C. to 185° C. and 1 to 10 bar, b) the product gas stream consisting essentially of ethylene, vinyl acetate, acetic acid, water, carbon dioxide and further inert gases is fractionated, and c) all or part of the ethylene is recycled to the recycle gas process, wherein all or part of steam formed in the gas-phase reaction by heat exchange, with a temperature of from 120° C. to 185° C. and pressure of from 1 to 10 bar, is compressed by a differential pressure of at least 0.5 bar and used further.
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