Patent ID: 6613940
Filing Date: 2003-09-02
Classification: B01J,C07C

Abstract:
In the reaction of catalytic gas phase oxidation by means of a shell-and-tube reactor adapted to circulate a heating medium to the shell of said reactor through the medium of a circulation device connecting an annular conduit connected thereto, a method for, the catalytic gas phase oxidation characterized by, wherein subjecting a part of said heating medium extracted from said shell of the reactor to heat exchange, introducing said heating medium resulting from the heat exchange into the proximity of a heating medium circulation inlet on the inlet side of said circulation device or the annular conduit on the outlet side of said reactor, setting the flow rate of said heating medium after said heat exchange in the range of 2-40 vol. % based on the flow rate of said heating medium within the shell of said reactor, and setting the temperature difference between said heating medium after the heat exchange and said heating medium being introduced into the shell of the reactor in the range of 15-150Â° C.