Method for the synthesis of acrolein from glycerol

Method for the synthesis of acrolein from glycerol

  • CN 101,896,451 A
  • Filed: 12/16/2008
  • Published: 11/24/2010
  • Est. Priority Date: 12/20/2007
  • Status: Active Application
First Claim
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1. prepare the method for propenal from glycerine, may further comprise the steps:

  • (a) in first reactor, make aqueous glycerin solution in the presence of acid catalyst with acrolein reaction forming ring-type glycerine propenal aldehyde acetal,(b) under 100 ℃

    -300 ℃

    temperature, make flow evaporator from step (a),(c) gas stream that will before obtain is delivered on the dehydrating glycerin catalyzer in second reactor, with the preparation propenal,(d) from isolating the propenal of preparation from the stream of step (c), a part of propenal is recycled to the device of the acetal that is used for preparation process (a).

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