Catalyst for improving organic sulfur hydrolysis rate, its carrier and preparation method

Abstract

This invention provides one kind of catalyst which can improve organic sulfur hydrolysis rate.First,organic sulfur hydrolysis additive and carrier material is made into alkaline material through the process of kneading drying roasting and grinding.Then,mixing the carrier material alkaline material and alkali soil material,also adding peptizing agent,the catalyst carrier can be made through the process of kneading extruding strip and roasting.The catalyst carrier cab be made into sulfur tolerant shift catalyst by impregnating active component molybdenum and cobalt either alkali metal.The outstanding advantages of this invention is that enhanceding the surface alkaline of carrier by adding alkali promoter in the carrier material, which not only improve the activities of catalyst to the organic sulfur,but also improve the low temperature activities of the catalyst.The catalyst of this invention can be used in pressure range of 1.0-5.0MPa.

Description

technical field [0001] The invention relates to a shift catalyst capable of improving the hydrolysis function of organic sulfur, its carrier and its preparation method, specifically, a sulfur-resistant shift catalyst capable of improving the hydrolysis function of organic sulfur, its carrier and its preparation method. Background technique [0002] It is well known that the synthesis gas produced from coal contains H 2 S and organic sulfur mainly COS. A small amount of COS will seriously affect the quality of the product and cause the catalyst to lose its activity, so an effective removal method must be selected. Currently used desulfurizers such as iron oxide, activated carbon, and zinc oxide are very effective in removing H 2 S has a high sulfur capacity, but its sulfur capacity is low for the direct removal of COS, and only COS can be hydrolyzed or hydrogenated into H during the conversion process. 2 Only S can be removed. Therefore, the quality of conversion catalysts...

AI Technical Summary

Problems solved by technology

A small amount of COS will seriously affect the quality of the product and cause the catalyst to lose its activity, so an effective removal method must be used

Currently used desulfurizers such as iron oxide, activated carbon, and zinc oxide are very effective in removing H 2 S has a high sulfur capacity, but its sulfur capacity is low for the direct removal of COS, and only COS can be hydrolyzed or hydrogenated into H during the conversion process. 2 Only S can be removed. Therefore, the quality of conversion catalysts to convert organic sulfur will directly affect the accuracy of final desulfurization and the service life of catalysts in subsequent sections. Especially in recent years, with the rapid development of coal-based methanol industry The development of organic sulfur puts forward higher requirements for the conversion and removal of organic sulfur (0.05×10 -6 )