PROCESS FOR PREPARING MIDDLE DISTILLATES USING A COMBINATION OF AN INTERMEDIATE PORE SIZE SILICOALUMINOPHOSPHATE MOLECULAR SIEVE CATALYST AND A HYDROCRACKING CATALYST FOR SECOND STAGE HYDROCRACKING

摘要

The present invention relates to a process for preparing middle distillatehydrocarbons from a denitrogenatedhydrocarbonaceous feedstock comprising contacting the feedstock with acatalyst comprising an intermediate pore sizesilicoaluminophosphate molecular sieve and at least one hydrogenationcomponent, and a large-pore hydrocracking catalyst, and recovering ahydrocarbonaceous effluent wherein more than about 40 % by volume of theeffluent boils above about 300 ° F and below about 725° F and has a pout point below 0 ° F.