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PROCESS FOR PRODUCING UNSATURATED NITRILE

  • US 20190225576A1
  • Filed: 06/08/2018
  • Published: 07/25/2019
  • Est. Priority Date: 06/09/2017
  • Status: Active Grant
First Claim
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1. A process for producing unsaturated nitrile, using a fluidized bed reactor having an internal space comprising a catalyst capable of being fluidized therein;

  • a feed opening to feed a starting material gas comprising hydrocarbon to the internal space; and

    a discharge port to discharge a reaction product gas from the internal space, the process comprising a reaction step of subjecting the hydrocarbon to a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated nitrile, whereinwhen in the internal space, a space where an existing amount of the catalyst per unit volume is 150 kg/m3 or more is defined as a dense zone and a space where an existing amount of the catalyst per unit volume is less than 150 kg/m3 is defined as a sparse zone in the reaction step, a gas residence time in the sparse zone is 5 to 50 sec.

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