METHOD FOR PRODUCING CONJUGATED DIENE

PROBLEM TO BE SOLVED: To provide a method for producing a conjugated diene more stably by preventing the occlusion in a quenching tower.SOLUTION: The method for producing a conjugated diene comprises: obtaining a generated gas containing the conjugated diene generated by an oxidation dehydrogenation...

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Hauptverfasser: NISSEKI HIROKI, UTSUNOMIYA MASARU, TAKEO HIROSHI, NISHIO TAKUMA, NAKAMURA HIROFUMI, YAGI HIROYUKI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for producing a conjugated diene more stably by preventing the occlusion in a quenching tower.SOLUTION: The method for producing a conjugated diene comprises: obtaining a generated gas containing the conjugated diene generated by an oxidation dehydrogenation reaction in the presence of a catalyst by supplying a mixed gas into a reactor, the mixed gas obtained by mixing a raw material gas containing a monoolefin having a carbon atom number of not less than 4 with a molecular oxygen-containing gas; cooling the generated gas; and thereafter recovering the conjugated diene, the generated gas generated by the oxidation dehydrogenation reaction is heated to 300-221°C, and thereafter the generated gas is cooled to 99-20°C.