Abstract

This paper is directed toward the selection of coking conditions that will give lower yields of coke and higher yields of distillate cuts. The process of coking under reduced pressure is best used for zero-residue processing of high-sulfur crudes and the production of distillates that can be used as feedstocks to obtain needle coke and thermal gasoil. The distillates from reduced pressure coking are better feedstocks for catalytic cracking and hydroprocessing than are the analogous fractions obtained by coking at above-atmospheric pressures.

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