CATALYST SYSTEM FOR DESULFURIZATION TREATMENT OF INDUSTRIAL SULPHUR-CONTAINING WASTE GAS AND PROCESS THEREOF

摘要

Disclosed in the present invention are a catalyst system for desulfurization treatment of an industrial sulphur-containing waste gas and a process thereof, wherein the catalyst system comprises the components in the following contents by mass percent: a polyol at 2-50%, an acid catalyst at 1-40%, and the balance being water; and the acid catalyst is one or more of an inorganic acid, an inorganic acid salt, an organic carboxylic acid or a soluble salt thereof. The process comprises: pre-treatment of the waste gas, absorption reaction, and recovery of a product sulphur. The desulphurization process of the present invention is mainly characterized in that two streams of waste gases respectively containing hydrogen sulphide and sulphur dioxide can be processed at the same time, the reaction process uses a low temperature aqueous phase reaction, in which the low temperature can ensure a deep conversion of hydrogen sulphide and sulphur dioxide (improving the total desulfurization rate to 99.95%), and the catalyst system of the present invention is easy to formulate and has relatively low costs.