Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Mitsubishi Chemical Coporation

Itaru Sawaki

Kazunori Oshima

Takashi Ushikubo

Ken-ichi Kiyono

Yasunori Ishimura

Hideo Suwa

Yoshiaki Iizuka

Tatsuya Ihara

Atsushi Kayo

Mineo Izumi

Tiaki Umezawa

Satoshi Kobayakawa

Hiroya Nakamura

Yasuyuki Yamauchi

Hideaki Takumi

Ken Shiraga

Kei Inumaru

Kazuhiro Shimizu

Mamoru Sawano

Disclosed is a fluidized bed reactor wherein the average cross-sectional area occupied by a cooling coil, a dummy pipe and/or a cyclone leg is 10% or more of the average cross-sectional area of said reactor in a dense-phase fluidized catalyst bed region. The fluidized bed reactor in the present invention allows an improved fluidization of catalyst and thus allows an efficient reaction of a hydrocarbon with an oxygen-containing gas in the presence of a catalyst.

Fluidized bed reactor

Process for the preparation of maleic anhydride

Process for the production of maleic anhydride

A method for a gas phase catalytic oxidation reaction of a hydrocarbon, which comprises: subjecting an alkane having a carbon number ranging from 3 to 8 and/or an alkene having a carbon number ranging from 2 to 8 to a gas phase catalytic oxidation reaction to produce a vapor phase oxidation product in the presence of a mixed metal oxide catalyst, wherein the reacion is conducted in the presence of particles substantially inert to the reaction in an amount within a range of the same amount as the amount of catalyst to 99 wt. % in all particles.

Method for gas phase catalytic oxidation of hydrocarbon

A process for producing maleic anhydride is described, which comprises (i) reacting a hydrocarbon with oxygen in a vapor phase in the presence of a catalyst to yield a reaction mixture gas containing maleic anhydride, (ii) bringing the reaction mixture gas into contact with an organic solvent to collect the maleic anhydride in the organic solvent, (iii) separating at least part of the maleic anhydride from the organic solvent, (iv) washing with an aqueous alkali solution at least part of the organic solvent from which maleic anhydride has been separated, and (v) reusing the resultant washed organic solvent and the residual organic solvent for contact with the reaction mixture gas.

Process for producing maleic anhydride

A catalyst for the production of a nitrile from an alkane, which satisfies the following conditions 1 and 2:

Catalyst for the production of nitriles

A process for preparing a catalyst useful for producing a nitrile by a gas phase catalytic oxidation reaction of an alkane with ammonia, which comprises drying a solution or slurry containing molybdenum, vanadium and tellurium by a spray drying method or a freeze-drying method and heat-treating the resulting dried product.

Process for preparing a catalyst useful for producing a nitrile

A process for producing a nitrile, which comprises subjecting an alkane and ammonia in the gaseous state to catalytic oxidation in the presence of a catalyst which satisfies the following conditions of (1) and (2):

Process for producing nitriles

Growing community of inventors

Okayama, Japan

Itaru Sawaki