Liquid purification or separation – Casing divided by membrane into sections having inlet
Reexamination Certificate
2005-12-06
2005-12-06
Walker, W. L. (Department: 1723)
Liquid purification or separation
Casing divided by membrane into sections having inlet
C210S634000, C210S640000, C210S649000, C210S605000, C210S651000, C210S652000, C210S653000, C210S654000, C210S655000, C585S818000, C585S819000, C261S018300, C261S034100, C123S179800, C123S179900, C123S00100A, C123S003000
Reexamination Certificate
active
06972093
ABSTRACT:
An onboard fuel separation apparatus separates a material fuel (gasoline) into a high-octane fuel having a higher octane value than the material fuel and a low-octane fuel having a lower octane value than the material fuel using a separation membrane which selectively allows high-octane value components (such as aromatic components) permeate through the membrane. The apparatus increases the ratio of the amount of the high-octane value components permeating through the membrane to the amount of the high-octane value components contained in the material fuel by, (A) Controlling the temperature of the material fuel supplied to the membrane (B) Increasing partial pressure of the low-octane value components on the high-octane fuel side of the membrane and removing volatiles from the permeate, and (C) Bypassing volatiles in the material feed around the membrane.
REFERENCES:
patent: 5095171 (1992-03-01), Feimer et al.
patent: 2002/0139321 (2002-10-01), Weissman et al.
patent: A 5-312115 (1993-11-01), None
patent: A 2000-329013 (2000-11-01), None
Iwashita Yoshihiro
Partridge Randall D.
Ueda Takanori
Weissman Walter
Exxonmobil Research and Engineering Company
Menon K S
Toyota Jidosha & Kabushiki Kaisha
Walker W. L.
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