Research on preparation methods of low bulk density Claus tail gas hydrogenation catalyst

Objective A Claus tail gas hydrogenation hydrolysis catalyst with low bulk density and high strength was prepared to solve the problem of high cost caused by high bulk density of the catalyst.

Methods The alumina powder properties and calcination process which has the greatest influence on the performance of the support were investigated. TG, SEM, XRD and other characterization methods were used to study the preparation method of low bulk density Claus tail gas hydrogenation hydrolysis catalyst, and the optimal control conditions were selected to improve the comprehensive performance of the catalyst.

Results A clover shaped catalyst carrier with bulk density of only 0.5 g/cm³, strength of 189 N/cm and specific surface area of 312 m²/g was prepared.

Conclusion The low bulk density catalyst prepared by impregnation method showed good tail gas hydrogenation hydrolysis performance and greatly reduced the catalyst loading cost.