Petrochemical feedstock purification

Details Petrochemical feedstock purification Petrochemical feedstock purification

2006-04-26

2009-08-04

Nguyen, Tam M (Department: 1797)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

C585S449000, C208S263000, C208S25400R

Reexamination Certificate

active

07569741

ABSTRACT:
Methods and systems for petrochemical feedstream purification are described herein. The methods generally include providing a petrochemical feedstock, wherein the petrochemical feedstock includes a concentration of polar impurities, contacting the petrochemical feedstock with a washing agent to remove at least a portion of the polar impurities therefrom, separating the washing agent from the petrochemical feedstock to form a purified feedstock and passing the purified feedstock to a petrochemical process. In one embodiment, the petrochemical feedstock includes benzene and the washing agent includes water.

REFERENCES:
patent: 4009217 (1977-02-01), Uitti
patent: 6887370 (2005-05-01), De Wet et al.
patent: 2003/0158456 (2003-08-01), O'Rear et al.
patent: 2003/0166982 (2003-09-01), O' Rear et al.

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