Patent ID: 7371882
Filing Date: 2008-05-13
Classification: B01J,C07C,F28D

Abstract:
1. A method for producing a nitrile compound, comprising reacting a carbon ring compound having organic substituents or a heterocyclic compound having organic substituents with ammonia and a gas containing oxygen, by a gas phase reaction using a fluidized bed catalyst, in a reactor comprising plural cooling tubes which are disposed in a cylindrical fluidized catalyst bed having a diameter of 2.0 meters or greater, (a) wherein said plural cooling tubes include (i) cooling tubes of a partial vaporization type in which a portion of a cooling medium is vaporized in the tubes and (ii) cooling tubes of a complete vaporization type in which an entire cooling medium is vaporized in the cooling tubes, (b) wherein an equivalent diameter defined by equation (1) in a horizontal section of a region in the fluidized catalyst bed where the cooling tubes exist is in a range of 0.2 to 2.0 m and at least a portion of the cooling tubes exists in a circle having a same diameter as the equivalent diameter and placed in the section, equation (1) being: wherein DE (m): the equivalent diameter AF (m LW (m): a length of circumferences where the horizontal section of the flow route contacts the fluidized catalyst bed (a circumferential length of dipping), and (c) wherein a ratio (S S S