Method for hydrocracking heavy fraction oils

Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion

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208 56, 208112, 208144, 208145, 208251H, 208217, 208216R, C10G 6512

Patent

active

049666797

ABSTRACT:
A method for hydrocracking a heavy fraction oil which comprises cracking a heavy fraction oil in the coexistence of a catalyst and a hydrogen donating solvent such as tetralin while adding a hydrogen-containing gas to the cracking reactor thereby inhibiting the formation of carbonaceous substances and precursors thereof and then hydrogenating the reaction products in the presence of a solid catalyst while adding a hydrogen-containing gas to the hydrogenating reactor thereby to convert the toluene-insoluble carbonaceous substances and precursors thereof to toluene-soluble ones, thus causing no clogging in an apparatus used.

REFERENCES:
patent: 4294686 (1981-10-01), Fisher et al.
patent: 4376695 (1983-03-01), Belinko et al.
patent: 4430197 (1984-02-01), Poynor et al.
patent: 4525267 (1985-06-01), Inooka
patent: 4640765 (1987-02-01), Kubo

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