DISPOSITIF POUR SOUNTENTION DE CHTALYSEUR DANS LES TUBES DE CONTACT

摘要

A reactor for catalytic gas phase oxidation includes a tube bundle of contact tubes extending between and having their respective ends seated in tube sheets in a vessel in which a reaction gas is passed through the tubes and a heat carrier is circulated around the exterior of the tubes. Each contact tube is filled with catalyst particles of relatively small size, and holding means are arranged in each tube end in order to hold the particles therein. The holding means comprise a layer or skein of wire gauze arranged adjacent each end and held in position by a clamping ring which may be formed as a spring ring which is engaged against the walls of the tube or a ring which engages in an annular notch of the tube. In some instances, the holding means are arranged in only one end of the tube, for example the bottom end.