Hydrotreating of gas oil FCC Coke gas oil by two differentcatalysts A RN-1B FH-5 Effectiveness of operationtemperature on the final products

摘要

Hydrotreating of gas oil [a mixture of FCC & coke gasoil, 45:55 respectively] was investigated using A[RN-1 [NiO-WO3/additive Supports on γ -Al2O3]] & B [FH-5 [[NiO-MoO3-WO3-additives supports on γ -Al2O3/SiO2]] catalysts. The experiments were performed in a diabetic fixed- bed reactor under a pressureof 6.0MPa, hydrogen to liquid ratio of 350[V%], and LHSV of 2.5 1/h at the temperatures of 300,330,and350 oC. Each catalyst was diluted with a ceramic, dried, sulfide, and stabilized before used forhydrotreating .The products of catalyst A was found to be more stable in colors than that of B. The yieldwas found to be more than 100%. Catalyst A was found to be more active than catalytic B fordesulfurization, denitrogenaion, and saturation of unsaturated hydrocarbons. According to the experimentalresults 93% of sulfur, 84% of nitrogen, and 94 % saturation can be achieved by catalyst A while at samecondition about 84%of Sulfur, 61.2% of nitrogen can be removed, and 92%saturation of unsaturatedhydrocarbons can be achieved by catalyst B .So that catalyst A was the best .The color of the product wasyellow while, that of the feed was black. If this product is used to produced gasoline or, diesel fuel directlyamount of sulfur in the final product was found to be about 272 PPM and that of nitrogen 117PPM .Byusing both Catalyst P.R.China could reach 2005year standard for sulfur (5oPPM). Also if this product isused as a feed stock for FCC gasoline the sulfur in the final product should be in the range of 15-27 PPMwhich is less than USA & European Standard for sulfur in year 2005.In hydrotrating,gas oildesulfurization,denitrogenation and saturation of unsaturated hydrocarbos occurred simultinuoslly