Titanium dioxide-based sulfur recovery catalyst and preparation method thereof

Abstract

The invention discloses a titanium dioxide-based sulfur recovery catalyst and a preparation method thereof. The titanium dioxide-based sulfur recovery catalyst consists of the following components inpart by weight: 80-90 parts of porous oxide with a particle size of 150-200 mum, 10-15 parts of graphene, 5-8 parts of ferric oxide and 4-6 parts of manganese dioxide; the porous oxide consists of 20-30 parts by weight of activated aluminum oxide, 60-80 parts of titanium dioxide and 40-50 parts of silicon dioxide. The titanium dioxide-based sulfur recovery catalyst disclosed by the invention has the benefits that on the premise of ensuring the hydrolysis activity and the oxygen resistance of the catalyst to organic sulfur, the cost of the catalyst is reduced, and meanwhile, the catalytic conversion efficiency of the quantitative catalyst under the same condition is improved.

Description

technical field [0001] The invention relates to the technical field of sulfur recovery, in particular to a preparation method and application of a titanium dioxide-based sulfur recovery catalyst. Background technique [0002] The sulfur recovery catalysts on industrial units today are activated alumina, iron-containing alumina catalysts, titanium-containing alumina catalysts and titanium-based catalysts. The developed sulfur recovery catalysts have their own advantages and disadvantages. At present, the active alumina catalyst commonly used in industry has good initial activity and has certain organic sulfur hydrolysis performance, but the activity decreases rapidly with the increase of use time, which is generally considered to be caused by catalyst sulfation poisoning. Due to the presence of sulfur dioxide and the irreversible adsorption of sulfur dioxide on the catalyst, the iron-containing alumina catalyst has good oxygen resistance, but the organosulfur hydrolysis perf...

AI Technical Summary

Problems solved by technology

At present, the active alumina catalyst commonly used in industry has good initial activity and has certain organic sulfur hydrolysis performance, but the activity decreases rapidly with the increase of use time, which is generally considered to be caused by catalyst sulfation poisoning. Due to the presence of sulfur dioxide and the irreversible adsorption of sulfur dioxide on the catalyst, the iron-containing alumina catalyst has good oxygen resistance, but the organosulfur hydrolysis performance is not ideal; Good, but the cost is high, and the loss is large, and the existing catalyst takes a long time to react under the condition that the total sulfur conversion rate meets the requirements under the condition of a certain amount

Images