Gasoline upgrading process using large crystal intermediate pore

Details Gasoline upgrading process using large crystal intermediate pore Gasoline upgrading process using large crystal intermediate pore

1992-08-13

1994-11-08

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208212, 208213, C10G 4500

Patent

active

053623762

ABSTRACT:
Low sulfur gasoline of relatively high octane number is produced from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst system comprising an intermediate pore size zeolite having crystallites of an effective radius of at least 0.25 micron. The treatment over the large crystal acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenation treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha, with the large crystal size improving gasoline yield by reducing conversion of branched paraffins.

REFERENCES:
patent: 4753720 (1988-06-01), Morrison
patent: 4827076 (1989-05-01), Kokayeff et al.

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