A novel hydrocracking Ni-W binary catalyst was tentatively designed and prepared by means ofimpregnation on mixed supports of modified Y zeolite and amorphous aluminosilicate . The structure andproperties of catalyst ...A novel hydrocracking Ni-W binary catalyst was tentatively designed and prepared by means ofimpregnation on mixed supports of modified Y zeolite and amorphous aluminosilicate . The structure andproperties of catalyst were extensively characterized by XRD, NH3-TPD, IR and XRF techniques. The perfor-mance of catalyst was evaluated by a 100-ml hydrogenation laboratory test unit with two single-stage fixed-bedreactors connected in series. The characterization results showed that the catalyst has a developed and con-centrated mesopores distribution, suitable acid sites and acid strength distribution, and uniform and highdispersion of metal sites. Under a high conversion rate of 73.8% with the >350℃ feedstock, a 98.1m% of C5+yield and 83.5% of middle distillates selectivity were obtained. The yield of middle distillates boiling between140℃and 370℃ was 68.70m% and its quality could meet the WWFC category III specification. It means thatthis catalyst could be used to produce more high quality clean middle distillates derived from heavy oilhydrocracking. The potential aromatic content of heavy naphtha from 65℃ to 140℃ was 37.5m%. The BMCIvalue of >370℃ tail oil was 6.6. The heavy naphtha and tail oil are premium feedstocks for catalytic reformingand steam cracker units.展开更多
Evaluation of hydrocracking catalyst CHC-1 showed superior qualities ofcatalyst CMC-1. When it was used for hydrocracking reaction, the yield of middle distillates (jetfuel and diesel fuel) can reach more than 71 m%. ...Evaluation of hydrocracking catalyst CHC-1 showed superior qualities ofcatalyst CMC-1. When it was used for hydrocracking reaction, the yield of middle distillates (jetfuel and diesel fuel) can reach more than 71 m%. When it was used for medium-pressurehydro-upgrading of Daqing FCC diesel fuel, diesel density was decreased by 0.0284―0.0365 g/cm^3(20℃). Cetane number increased by 7.8―10.5 and the contents of sulphur and nitrogen wereremarkably reduced. The storage stability of the upgraded diesel was improved.展开更多
文摘A novel hydrocracking Ni-W binary catalyst was tentatively designed and prepared by means ofimpregnation on mixed supports of modified Y zeolite and amorphous aluminosilicate . The structure andproperties of catalyst were extensively characterized by XRD, NH3-TPD, IR and XRF techniques. The perfor-mance of catalyst was evaluated by a 100-ml hydrogenation laboratory test unit with two single-stage fixed-bedreactors connected in series. The characterization results showed that the catalyst has a developed and con-centrated mesopores distribution, suitable acid sites and acid strength distribution, and uniform and highdispersion of metal sites. Under a high conversion rate of 73.8% with the >350℃ feedstock, a 98.1m% of C5+yield and 83.5% of middle distillates selectivity were obtained. The yield of middle distillates boiling between140℃and 370℃ was 68.70m% and its quality could meet the WWFC category III specification. It means thatthis catalyst could be used to produce more high quality clean middle distillates derived from heavy oilhydrocracking. The potential aromatic content of heavy naphtha from 65℃ to 140℃ was 37.5m%. The BMCIvalue of >370℃ tail oil was 6.6. The heavy naphtha and tail oil are premium feedstocks for catalytic reformingand steam cracker units.
文摘Evaluation of hydrocracking catalyst CHC-1 showed superior qualities ofcatalyst CMC-1. When it was used for hydrocracking reaction, the yield of middle distillates (jetfuel and diesel fuel) can reach more than 71 m%. When it was used for medium-pressurehydro-upgrading of Daqing FCC diesel fuel, diesel density was decreased by 0.0284―0.0365 g/cm^3(20℃). Cetane number increased by 7.8―10.5 and the contents of sulphur and nitrogen wereremarkably reduced. The storage stability of the upgraded diesel was improved.
