Heavy oil hydroconversion method

摘要

A heavy oil feedstock is subjected to hydroconversion in a first reaction zone containing a resid hydrocracking catalyst. Resulting liquid and gaseous products are separated. The first reaction zone liquid product is heated rapidly in a second reaction zone at a temperature of between 500 and 800°C to achieve an overall resid to distillate conversion of between 70 and 99%. The heating is preferably effected by means of a jet of expanded combustion products. The product of the second reaction zone is rapidly quenched to a temperature less than 400°C.