METHOD FOR PRODUCING (METH)ACRYLONITRILE

METHOD FOR PRODUCING (METH)ACRYLONITRILE

PROBLEM TO BE SOLVED: To prevent a heat exchanger for carrying out condensation from being plugged in a step for condensing a mixed gas containing by-produced acetonitrile and hydrogen cyanide in a production process of (meth)acrylonitrile. SOLUTION: The method for producing the (meth)acrylonitrile...

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Hauptverfasser: KAMEO HIROSHI, SAITO SHIGERU
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator KAMEO HIROSHI
SAITO SHIGERU
description PROBLEM TO BE SOLVED: To prevent a heat exchanger for carrying out condensation from being plugged in a step for condensing a mixed gas containing by-produced acetonitrile and hydrogen cyanide in a production process of (meth)acrylonitrile. SOLUTION: The method for producing the (meth)acrylonitrile includes spraying an acid-containing liquid X to the interior of the heat exchanger 32 when extracting the mixed gas J from a separated gas after obtaining the separated gas by separating unreacted ammonia from an ammoxidation reaction gas obtained from an ammoxidation reaction step, and cooling and condensing the mixed gas J by the heat exchanger 32. COPYRIGHT: (C)2009,JPO&INPIT
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SOLUTION: The method for producing the (meth)acrylonitrile includes spraying an acid-containing liquid X to the interior of the heat exchanger 32 when extracting the mixed gas J from a separated gas after obtaining the separated gas by separating unreacted ammonia from an ammoxidation reaction gas obtained from an ammoxidation reaction step, and cooling and condensing the mixed gas J by the heat exchanger 32. 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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title METHOD FOR PRODUCING (METH)ACRYLONITRILE
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