METHOD FOR PRODUCING UNSATURATED NITRILE

Title:

METHOD FOR PRODUCING UNSATURATED NITRILE

Document Type and Number:

WIPO Patent Application WO/2018/225854

Kind Code:

A1

Abstract:

A method for producing an unsaturated nitrile, the method having a reaction step for producing a corresponding unsaturated nitrile by subjecting a hydrocarbon to a gas phase ammoxidation reaction in the presence of a catalyst within an internal space using a fluidized bed reactor having the internal space, in which a catalyst is stored so as to be capable of flowing, a supply port for supplying a raw material gas including the hydrocarbon to the internal space, and a discharge port for discharging a reaction product gas from the internal space, and the method being such that, in the reaction step, the gas residence time in a dilute layer is 5-50 sec, where the space in which the amount of catalyst present per unit volume of the internal space is 150 kg/m3 or higher is defined as a dense layer and the space in which said amount is less than 150 kg/m3 is defined as the dilute layer.

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Inventors:

TAMURA SHO (JP)
NAGATA DAI (JP)

Application Number:

PCT/JP2018/022011

Publication Date:

December 13, 2018

Filing Date:

June 08, 2018

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)

International Classes:

C07C253/24; C07C255/08; C07B61/00

Domestic Patent References:

WO2014051090A1	2014-04-03
WO2012035881A1	2012-03-22

Foreign References:

JPH11349545A	1999-12-21
JP2002193906A	2002-07-10
JP2003507180A	2003-02-25
JP2002193906A	2002-07-10
JP5694379B2	2015-04-01

Other References: