Process for the cracking of heavy hydrocarbon streams

Details Process for the cracking of heavy hydrocarbon streams Process for the cracking of heavy hydrocarbon streams

1978-12-07

1980-03-04

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208251H, 208254H, 208216PP, 208211, C10G 2302

Patent

active

041916352

ABSTRACT:
A heavy hydrocarbon stream containing metals, asphaltenes, nitrogen compounds, and sulfur compounds is (a) contacted with hydrogen and a hydrotreating catalyst containing molybdenum and chromium, either as metals, as oxides, as sulfides, or mixtures thereof, deposed on a large-pore, catalytically active alumina to reduce the metals content in said stream, to convert the asphaltenes, nitrogen compounds, and sulphur compounds in said stream, the catalyst has a pore volume within the range of about 0.4 cc/gm to about 0.8 cc/gm, a surface area within the range of about 150 m.sup.2 /gm to about 300 m.sup.2 /gm, and an average pore diameter within the range of about 100 A (10 nm) to about 200 A (20 nm); and (b) at least a portion of the hydrotreated stream is cracked with a cracking catalyst to produce gasoline and distillates in improved yields. The catalyst in step (a) may also contain cobalt.

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patent: 3977961 (1976-08-01), Hamner
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patent: 4066574 (1978-01-01), Tamm

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