Study on gas phase preparation of active component for FCC catalyst

The research showed that the increase of metal content of high-silica Y zeolite promoted the reduction of olefin and sulfur content in FCC naphtha. High-silica Y zeolite with higher metal content could be obtained by gas phase preparation using metal ion exchange. The prepared catalyst was characterized by high hydrothermal stability, good selective hydrogen-transfer activity, and good coke selectivity. In comparison with the USY catalyst prepared by conventional hydrothermal treating, in a fixed-fluidized bed reactor with Daqing AR feedstock, naphtha olefin content reduced from 27.54 to 23.39%, and the sulfur content decreased from 1010 to 756 mg/L.