Process to insert selected catalyst rings into battery of reactor tubes followed by manual removal as required

摘要

A chemical reactor has a battery of contact tubes that are individually filled with different combinations of pre-formed catalyst rings. The different types of ring are held in pre-packed sizes. In a process to fill the tubes, the tubes are first filled with pre-packed rings. A number of rings are then removed manually as required from each tube to leave the requisite content. The catalyst rings are introduced in pre-packed quantities of from 50 g to 5 kg. In the subsequent reaction, individual rings expand by between 1 and 20 mm. Each tube has three or more sections. The ratio of the contact tube diameter to catalyst length is 2:1 - 20:1.