CATALYTIC REACTORS

摘要

A grid system for a catalytic reactor allowing catalyst to be discharged on shut down through the normal product outlet comprises a cylindrical or rectangular grid covering the outlet open at at least the outlet end, a shield adjacent the grid into which the grid can fit and means for moving the grid into and out of the shield and an extension of the grid into the outlet to position it and guide it when moved. The means for moving the grid is preferably external to the reactor and may be a rod passing through the outlet into contact with the grid or its extension. The grid system is particularly suitable for large reactors requiring relatively frequent catalyst replacement, eg. residue desulphurisation reactors.