Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1992-12-10
1995-03-21
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208212, 208213, C10G 4500
Patent
active
053992580
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 under endothermic conditions in a second reaction zone. Heat is added to the endothermic reaction zone to initiate and maintain octane restoring reactions. The preferred acidic catalyst is an intermediate pore size zeolite such as ZSM-5. The treatment over the acidic catalyst 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. The addition of heat at the second zone prolongs hydrodesulfurization catalyst life by allowing a lower hydrodesulfurization reactor temperature. The addition of heat also maximizes octane increase in the second zone.
REFERENCES:
patent: 3758403 (1973-09-01), Rosinski et al.
patent: 3759821 (1973-09-01), Brennan et al.
patent: 3767568 (1973-10-01), Chen
patent: 3769202 (1973-10-01), Plank et al.
patent: 3894107 (1975-07-01), Butter et al.
patent: 3894931 (1975-07-01), Nace et al.
patent: 3923641 (1975-12-01), Morrison
patent: 3957625 (1976-05-01), Orkin
patent: 4049542 (1977-09-01), Gibson et al.
patent: 4062762 (1977-12-01), Howard et al.
patent: 4309279 (1982-01-01), Chester et al.
patent: 4738766 (1988-04-01), Fischer et al.
patent: 4740292 (1988-04-01), Chen et al.
patent: 4753720 (1988-06-01), Morrison
patent: 4827067 (1989-05-01), Kokayeff et al.
patent: 4911823 (1990-03-01), Chen et al.
patent: 5143596 (1992-09-01), Maxwell et al.
Diez Douglas S.
Fletcher David L.
Harandi Mohsen N.
Hilbert Timothy L.
McGovern Stephen J.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Myers Helane
Sinnott Jessica M.
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