METHOD OF PRODUCING CONJUGATED DIENE

Title:

METHOD OF PRODUCING CONJUGATED DIENE

Document Type and Number:

Japanese Patent JP2013103896

Kind Code:

A

Abstract:

To recover a conjugated diene in high yield by efficiently removing aldehydes which are by-produced in the reaction using an industrially advantageous method from a product gas comprising the conjugated diene by carrying out the oxidative dehydrogenation in the presence of a catalyst using a raw material gas comprising a 4C or higher monoolefin together with a gas comprising molecular oxygen.

There is provided a method of producing a conjugated diene, wherein solution B containing the conjugated diene is obtained by absorbing a product gas containing the conjugated diene into an organic solvent A, the solution B containing the conjugated diene is separated into the organic solvent A and the conjugated diene D containing aldehyde by performing distillation, the conjugated diene D containing aldehyde is contacted with a solvent C of which infinite dilution activity coefficientγ^∞of aldehyde at 25°C is 6.0 or less to remove the aldehyde in the conjugated diene D by solvent absorption.

Inventors:

TAKANO KIYOMITSU
KAMEO HIROSHI
ITO HIROKI
MATSUNAGA KIICHIRO
NAKADA HIROAKI

Application Number:

JP2011247574A

Publication Date:

May 30, 2013

Filing Date:

November 11, 2011

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP

International Classes:

C07C5/333; C07C11/167

Domestic Patent References:

JP2010090083A	2010-04-22
JP2010275210A	2010-12-09
JPS60115532A	1985-06-22
JP2010090083A	2010-04-22
JP2010275210A	2010-12-09

Foreign References:

US3663641A

1972-05-16

Attorney, Agent or Firm:

Tsuyoshi Shigeno

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