Process for the production of low benzene gasoline

Details Process for the production of low benzene gasoline Process for the production of low benzene gasoline

2005-02-15

2005-02-15

Griffin, Walter D. (Department: 1764)

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

With preliminary treatment of feed or plural separation...

C585S258000, C585S266000, C208S210000, C208S211000, C208S212000

Reexamination Certificate

active

06855853

ABSTRACT:
A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subjected to hydrogenation to convert the benzene to cyclohexane which may be isomerized to improve the octane. The valuable olefins are removed in the light naphtha and the valuable heavier aromatics (toluene and xylenes) are removed in the heavy naphtha. In a preferred embodiment all of the reactions are carried out in distillation column reactors.

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