Hydrocracking of heavy oils/fly ash slurries

Mineral oils: processes and products – Chemical conversion of hydrocarbons – With prevention or removal of deleterious carbon...

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208 8R, 208 10, 208107, 208108, 208112, 208216R, 208126, 252467, 252470, C10G 916, C10G 4712, C10G 4722, C10G 4726

Patent

active

042996856

ABSTRACT:
An improved process is described for the hydrocracking of heavy hydrocarbon oil, such as oils extracted from tar sands. The charge oil in the presence of an excess of hydrogen is passed through a tubular hydrocracking zone, and the effluent emerging from the top of the zone is separated into a gaseous stream containing a wide boiling range material and a liquid stream containing heavy hydrocarbons. According to the novel feature, the charge stock is in the form of a slurry of heavy hydrocarbon oil and finely divided fly ash or high ash coal fines. The presence of this ash in the charge stock serves to greatly reduce coke precursors and thereby prevent the formation of carbonaceous deposits in the reaction zone.

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patent: 3844937 (1974-10-01), Wolk
patent: 4176051 (1979-11-01), Ternan et al.
patent: 4214977 (1980-07-01), Ranganathan et al.
patent: 4220518 (1980-09-01), Uchida et al.

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