Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1992-06-01
1995-04-18
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208 58, 208211, 208213, C10G 6902
Patent
active
054075599
ABSTRACT:
A process is provided for producing low sulfur gasoline of relatively high octane number from a catalytically cracked, sulfur-containing naphtha by hydrodesulfurization followed by treatment over an acidic catalyst comprising crystals having the structure of ZSM-12. The treatment over the acidic catalyst comprising ZSM-12 in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380.degree. F. (about 193.degree. C.), improvements in both product octane and yield relative to the feed may be obtained.
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Degnan Thomas F.
Shih Stuart S.
Cuomo Lori F.
McKillop Alexander J.
Mobil Oil Corporation
Myers Helane
Santini Dennis P.
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