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US 5,847,235 AGranted
Method of phenol tar desalting
AssigneeGeneral Electric Company
InventorsArkady S. Dyckman, Vladimir I. Sarge, Yelena N. Sarge, Boris I. Gorovits
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Abstract
A method for reduction of salt content in phenol tars with no additional solvent which washes the tars with water alone in a countercurrent flow extractor and substantially reduces the level of salt in the tar.
Claims14
A process for reducing the level of salt resulting from neutralization of catalyst acid in a phenol tar from a phenol-from-cumene process, which comprises;
- admixing in a multi-stage counter current flow extractor the phenol tar, which comprises salt, at a temperature of from about 10.degree. C. to about 90.degree. C. with an extraction liquid consisting essentially of water, in a tar to extraction liquid feed ratio of at least 0.3/1, wherein the tar and extraction liquid do not form a stable emulsion and the level of salt is reduced by at least 20 percent by weight.
Dependencies are inferred from the claim text.