Gas purification method

Abstract

Provided is a gas purification method, which belongs to the technical field of purification. The gas purification method provided in the present disclosure includes: subjecting a to-be-treated gas to purification using a recrystallized silicon carbide (R-SiC) gas filtration membrane to obtain a purified gas, where the R-SiC gas filtration membrane is prepared by a process including: mixing SiC, cellulose, dextran, vegetable oil, glycerol and water, and performing kneading to obtain a kneaded material; subjecting the kneaded material to extrusion molding, drying and degumming in sequence to obtain a degummed green body; and subjecting the degummed green body to sintering-coating treatment to obtain the R-SiC gas filtration membrane. In the present disclosure, the to-be-treated gas is purified by using the R-SiC gas filtration membrane. The R-SiC gas filtration membrane is resistant to acids, alkalis and high temperatures to facilitate direct purification on the corrosive high-temperature gas.

Dependencies are inferred from the claim text.