Abstract: The successful application of inorganic membrane purification technology for coker gas oil (CGO) in the 0.3 Mt/a CGO purification unit of SINOPEC Jinling branch was introduced, including the structure of the inorganic membrane, purification principle and process flow of the unit. The results of industrial application showed that the inorganic membrane purification unit for coker gas oil had the advantages of simple operation, stable operation, strong anti-pollution ability and good purification effect. After purification, the mechanical impurity content in CGO was always less than 0.01% with a removal rate more than 92%,and a purified CGO yiela above 90%, which could meet the feeding requirements of the following process.After 115d of operation,the transmembrane pressure difference increased from initial 83.95kPa to 103.00kPa,showing a good operation stability.

Key words: inorganic membrane, coker gas oil, mechanical impurities, filtration, coke powder