Hydrocracking process in which the buildup of polynuclear aromat

Details Hydrocracking process in which the buildup of polynuclear aromat Hydrocracking process in which the buildup of polynuclear aromat

1994-05-27

1995-11-07

Pal, Asok

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 96, 208 98, 208 99, 208 58, 585820, 585858, C10G 6706, C10G 4700, C10G 2503

Patent

active

054645263

ABSTRACT:
The buildup of heavy polynuclear aromatic compounds in a hydrocracking system is controlled by contacting at least a portion of the recycle oil to the hydrocracker with a porous solid that has been treated with an acid. The porous solid serves as a support for the acid, thereby presenting the recycle oil with a high surface area for contact with the acid, which extracts the heavy polynuclear aromatic compounds from the recycle oil. A preferred acid-treated support is an amorphous silica that has been impregnated with sulfuric acid.

REFERENCES:
patent: 1886260 (1932-11-01), Miller
patent: 3093574 (1963-06-01), Bertolacini et al.
patent: 3575844 (1971-04-01), Schutt
patent: 3619407 (1971-11-01), Hendricks et al.
patent: 4447315 (1984-05-01), Lamb et al.
patent: 4734226 (1988-03-01), Parker et al.
patent: 4781864 (1988-11-01), Pryor et al.
patent: 5190633 (1993-03-01), Fetzer et al.

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