Heavy hydrocarbon feedstock short residence time pretreatment

摘要

Heavy hydrocarbon feedstock is pretreated for use as a feed in the prodn. of liq. hydrocarbon fuels by (a) delivering the heavy hydrocarbon feedstock to a tubular thermal pretreating reactor; (b) delivering hot particulate solids to the tubular thermal pretreating reactor; (c) pretreating the heavy hydrocarbon feedstock at a temp. of 900-1200 deg.F, and a residence time of 0.05-0.50 seconds; (d) immediately delivering the sepd. pretreated gas from the thermal pretreating reactor to a catalytic reactor; and (e) catalytically cracking the pretreated effluent from the thermal pretreating reactor.