Cylinder shaped heterogenous catalyst units with high domed ends and exterior flutes

摘要

A cylindrical catalyst unit has a length C and diameter D, has two or more flutes running along the length of the exterior cylindrical surface, and domed ends of lengths (heights) A and B. The shape is constrained so that (A+B+C)/D is in the range 0.50 to 2.00, and (A+B)/C is in the range 0.40 to 5.00. The dome heights A and B may be equal. The catalyst may be used particularly in reactions where hydrogen is a reactant such as hydroprocessing, hydrogenation, water-gas shift reactions, methanation, hydrocarbon synthesis by the Fischer-Tropsch reaction, methanol synthesis and ammonia synthesis.