Energy-efficient process for para-xylene production

Details Energy-efficient process for para-xylene production Energy-efficient process for para-xylene production

2006-06-21

2009-06-30

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S470000, C585S488000, C585S480000, C585S481000

Reexamination Certificate

active

07553998

ABSTRACT:
This invention is drawn to a process for producing and recovering one or more high-purity xylene isomers from a feed stream having a substantial content of C9and heavier hydrocarbons. The feed stream is processed to de-ethylate heavy aromatics, fractionated and passed to a circuit comprising C8-aromatic isomer recovery and isomerization to recover the high-purity xylene isomer with lowered energy costs.

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