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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| Sprache: | eng |
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| Zusammenfassung: | 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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