Ammoxidation method in fluidized-bed reactor

Details Ammoxidation method in fluidized-bed reactor Ammoxidation method in fluidized-bed reactor

1997-09-25

2000-05-02

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

558322, 558323, 558324, 558327, C07C25318, C07C25326, C07C25328, C07C25334

Patent

active

060574712

ABSTRACT:
An ammoxidation method in a fluidized-bed reactor, in which, when a starting material to be ammoxidized is ammoxidized by means of vapor-phase catalytic fluidized-bed reaction, the reaction is carried out in a fluidized-bed reactor to which an oxygen-containing gas is fed through feed openings provided at the bottom thereof, and a starting material to be ammoxidized is fed through feed openings provided above the feed openings for the oxygen-containing gas, the distance between the feed openings for the oxygen-containing gas and those for the starting material being from 30 to 250% of the height of a fluidized solid matter in a static state so as to form such a fluidized bed that the density of the fluidized solid matter at the feed openings for the starting material to be ammoxidized is in the range of 50 to 300 kg/m.sup.3 and that the gas velocity is 1 m/s or lower. By this method, the efficiency of contact between catalyst particles and a starting material, and the result of the reaction (the yield of a desired product) are improved.

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patent: 4102914 (1978-07-01), Beuther et al.
patent: 4511548 (1985-04-01), Attig et al.
patent: 4801731 (1989-01-01), Jordan
patent: 5158787 (1992-10-01), Sasaki et al.

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