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

Abstract

With the continuous improvement of national energy conservation and emission reduction requirements, oil and natural gas production industry has increasingly strict requirements for SO2 emission from tail gas. Nowadays, most of large and medium-sized natural gas purification plants and refineries adopt hydrogenation reduction tail gas treatment process to achieve ultra-low SO2 emission, which puts forward high requirements for the activity, stability and economy of tail gas hydrogenation catalyst. In recent years, due to the high price of hydrogenation catalyst, it has become a research hot spot to reduce the cost of catalyst by reducing the bulk density. Traditional catalyst preparation process focused on the types and properties of support and active components, while the influence of alumina powder properties and preparation conditions have not been paid enough attention. With the extensive application of fine characterization methods and the further understanding of catalyst micro-structure, the influence of alumina powder properties and preparation conditions on the performance of catalyst are more and more obvious. In this paper, the Pseudo boehmite was investigated. TG, SEM, XRD and other characterization methods were used to study the preparation method of low bulk density Claus tail gas hydrogenation catalyst.