Fluid bed reactor and method of producing nitrile compound using same

Abstract

This fluid bed reactor prevents catalyst accumulation in a recessed portion of the inner wall of the reactor and prevents device deterioration and adverse effects on reactions. Further, the fluid bed reactor prevents rapid generation of heat due to outside air contacting a catalyst accumulated in the recessed portion of the inner wall of the reactor. Also, the fluid bed reactor prevents catalyst particle accumulation on a protruding portion inside of the reactor, and prevents deterioration of material quality of the device and adverse effects on reactions. Furthermore, the fluid bed reactor prevents rapid heat generation due to outside air contacting catalyst particles accumulated on the protruding portion of the reactor.

Description

technical field [0001] The present invention relates to a fluidized bed reactor, and specifically relates to a fluidized bed reactor capable of preventing accumulation of catalyst particles inside the fluidized bed reactor and a method for producing a nitrile compound using the fluidized bed reactor. Background technique [0002] Fluidized bed reactors are used in various industrial reactions. For example, nitrile compounds such as acrylonitrile are industrially produced by ammoxidation of hydrocarbons such as propylene. As a method for producing a nitrile compound, a method of performing a gas-phase oxidation reaction in the presence of a metal oxide catalyst is generally known. It is described that this gas-phase oxidation reaction is to introduce oxygen-containing gases such as hydrocarbons, ammonia, and air as raw materials into a reactor, and carry out ammoxidation reaction in the presence of the metal oxide catalyst to produce nitrile compounds (Patent Document 1, Pat...

AI Technical Summary

Problems solved by technology

[0004] If the catalyst is deposited on the recesses, protrusions, etc. inside the reactor, heat removal may not be performed smoothly, and hot spots (hotspots) may be generated in the reactor, resulting in deterioration of the material of the reactor at the accumulation part of the catalyst particles, Corrosion of materials such as nozzles

In addition, there are cases where the gas phase oxidation reaction is adversely affected due to reduction and degradation of the catalyst particles due to accumulation of the catalyst particles, which reduces the yield of the target reaction.

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