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- W1514676491 abstract "This chapter discusses several major refinery processes to improve RON. These include naphtha-isomerization, reforming, addition of FCC-Naphtha, alkylation, addition of oxygenates or polygas or butanes. Naphtha isomerization is a simple and very cost effective technology for octane replacement. Isomerization of light naphtha streams rich in C5's and C6's typically results in an increase of 10 to 20 octane numbers. The octane increase depends upon the feed composition and the octane need of the refiner. Proper selection of the isomerization technology is an assurance against lack of octane and surplus of benzene in the gasoline pool. Normal C5's and C6's typically are abundant in streams from gas condensate units, light raffinate from aromatics extraction units, and light straight-run naphtha from atmospheric distillation. Even benzene containing feedstocks became potential sources for isomerization as modern catalysts help to manage the benzene surplus through saturation and ring opening reactions to high octane product. This conversion of benzene is an added benefit of isomerization to refiners' economics, especially in those countries where extra credit is given for benzene reduction in the gasoline pool. The isomerization reaction takes place over a catalyst under relatively mild conditions in the presence of hydrogen." @default.
- W1514676491 created "2016-06-24" @default.
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- W1514676491 date "2003-01-01" @default.
- W1514676491 modified "2023-09-27" @default.
- W1514676491 title "8 Modern refining concepts-an update on naphtha-isomerization to modern gasoline manufacture" @default.
- W1514676491 doi "https://doi.org/10.1016/s0167-2991(03)80165-9" @default.
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