Apparatus for producing carbonic acid diester

Details Apparatus for producing carbonic acid diester Apparatus for producing carbonic acid diester

1998-08-04

2000-09-19

Knode, Marian C.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422139, 422198, 422200, 159DIG3, B01J 818, F27B 1500, F27B 1514, F27B 1516, B01D 100

Patent

active

061207381

ABSTRACT:
A process for producing a carbonic acid diester, which comprises carrying out a reaction in a vapor phase of an alcohol, carbon monoxide and oxygen in the presence of a catalyst in a fluidized-bed reactor so that an oxidative carbonylation of the alcohol occurs, thereby obtaining a carbonic acid diester, wherein a heat of reaction is removed by the latent heat of vaporization of the alcohol as a raw material. In the process, for example, either at least part of the alcohol may be directly fed in liquid phase into the fluidized bed or cooling pipes are disposed in the fluidized bed and at least part of the alcohol is introduced in liquid phase into the cooling pipes as a heat transfer medium so that the liquid alcohol is vaporized and fed into the fluidized-bed reactor. Carbon monoxide may be introduced together with the liquid alcohol into the cooling pipes. A process of high energy efficiency realizing an effective utilization of a heat of reaction and an apparatus therefor are provided in the production of a carbonic acid diester in a vapor phase with the use of a fluidized-bed reactor.

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