Patent ID: 6120738
Filing Date: 2000-09-19
Classification: B01J,C07C,Y10S

Abstract:
An apparatus for producing a carbonic acid diester, which comprises:a fluidized-bed reactor (1) adapted to carry out a reaction in a vapor phase of an alcohol, carbon monoxide and oxygen in the presence of a catalyst so that an oxidative carbonylation of the alcohol occurs to hereby form a carbonic acid diester,an evaporator (12) adapted to mix a liquid alcohol with carbon monoxide and vaporize at least part of the alcohol to thereby form a gaseous mixture of alcohol and carbon monoxide and adapted to feed the gaseous mixture through a gas supply line (3) into the fluidized-bed reactor (1),cooling pipes (7) arranged in the fluidized-bed reactor (1) and adapted to cause a liquid alcohol (9) as a raw material as a heat transfer medium capable of removing a heat of reaction generated by the oxidative carbonylation of the alcohol in the fluidized-bed reactor (1) to flow therethrough, anda heated alcohol supply line (14) adapted to feed the liquid alcohol (9) heated in the fluidized-bed reactor (1) from the cooling pipes (7) into the evaporator (12).