METHOD OF THERMAL CRACKING PROCESSING, THERMAL CRACKING REACTION VESSEL AND THERMAL CRACKING PROCESSING APPARATUS FOR PETROLEUM HEAVY OIL

摘要

The dispersion of superheated steam inside a reaction vessel is improved to a preferred state to thereby attain not only inhibition of coke adhesion and prevention of blockage in the reaction vessel and reaction vessel exit c racked gas piping but also production of a high-quality homogeneous pitch. T here is provided a method of processing comprising blowing superheated steam , from a bottom part of reaction vessel, into petroleum heavy oil having bee n heated in a heating furnace and thereafter introduced in the reaction vess el so as to bring the superheated steam into direct contact with the petrole um heavy oil, thereby attaining thermal cracking into an oil fraction and pi tch, wherein in the blowing of the superheated steam, the blowing is perform ed so that the superheated steam generates a swirling flow around the shaft of the trunk part of the reaction vessel.