Manufacture of catalytic cracking charge stocks by hydrocracking

Details Manufacture of catalytic cracking charge stocks by hydrocracking Manufacture of catalytic cracking charge stocks by hydrocracking

1973-02-22

1977-08-09

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208111, C10G 2300

Patent

active

040409449

ABSTRACT:
A desirably upgraded charge stock for catalytic cracking containing a relatively large proportion of heavy hydrocarbons boiling above about 800.degree. F., is produced by first subjecting a raw feedstock boiling predominantly above 600.degree. F. and containing a substantial proportion of material boiling above 800.degree. F., to catalytic hydrofining followed by catalytic hydrocracking at high pressures in the presence of a Group VIB and/or Group VIII metal-promoted, crystalline zeolite hydrocracking catalyst. The hydrocracking catalyst and conditions are chosen so as to achieve selective conversion of material boiling between about 600.degree. and 800.degree. F. to lower boiling materials with a relatively minor conversion of the 800.degree. F+ material. The resulting product boiling above 400.degree. F is rich in 800.degree. F+ material, and constitutes an excellent catalytic cracking charge stock.

REFERENCES:
patent: 2885346 (1959-05-01), Kearby et al.
patent: 2932611 (1960-04-01), Scott, Jr. et al.
patent: 3098029 (1963-07-01), Snyder, Jr.
patent: 3159564 (1964-12-01), Kelley et al.
patent: 3468788 (1969-09-01), Wilkinson
patent: 3598719 (1971-08-01), White
patent: 3728251 (1973-04-01), Kelley et al.

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