Patent ID: 7297814
Filing Date: 2007-11-20
Classification: B01J,C07C,F28D,F28F

Abstract:
1. A vapor phase catalytic oxidation method comprising: providing a multitube reactor comprising a plurality of reaction tubes having a catalyst packed therein, and a shell equipped with the reaction tubes inside and into which a heat medium flowing outside the reaction tubes is introduced, wherein the reaction tubes are selected from tubes having same nominal outside diameter and same nominal wall-thickness, an outside diameter tolerance of ±0.62%, and a wall-thickness tolerance of +19% to −0%, which further comprises baffles connected to the reaction tubes through connecting sites for changing a flow path of a heat medium introduced into the shell; circulating the heat medium through the outside of the reaction tubes; and feeding a reaction raw material gas inside the reaction tubes packed with a catalyst to obtain reaction product gas; wherein the method comprises setting catalyst packing specifications in the reaction tubes so that catalyst layer peak temperature sites of the reaction tubes are not located at the connecting sites between the baffles and the reaction tubes.