METHOD, TUBE BUNDLE REACTOR AND REACTOR SYSTEM FOR CARRYING OUT CATALYTIC GAS PHASE REACTIONS

摘要

In a method for carrying out catalytic gas phase reactions having the steps: a) providing a tube bundle reactor which has a bundle of reaction tubes that are filled with a catalyst charge and are cooled by a heat transfer medium, b) conveying a reaction gas through the catalyst charge, the reaction gas flowing into each reaction tube being divided into at least two part flows which are introduced in the axial direction of the reaction tube at different points in the catalyst charge, the catalyst charge has at least two catalyst layers of different activity, wherein the activity of the first catalyst layer, in the flow direction of the reaction gas, is lower than the activity of the at least one other catalyst layer and in step b) a first part flow is introduced into the first catalyst layer and each further part flow is introduced past the first catalyst layer into the at least one further catalyst layer. Also proposed is a tube bundle reactor for carrying out the method and a reactor system having a tube bundle reactor of this kind.