Phenol tar desalting method
AssigneeGeneral Electric Company
InventorsArkady S. Dyckman, Yelena N. Sarge, Vladimir I. Sarge, Boris I. Gorovits, Yury I. Petrov, Leontii M. Krasnov, Alexander S. Malinovskii, Sergey N. Chernukhin, Anatoly D. Sorokin, John V. Fulmer
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Abstract
A tar desalting process wherein the tar containing salts is mixed with dilute aqueous orthophosphoric acid in either a batch or continuous process, allowed to settle into two phases, an organic phase and an aqueous phase containing most of the salts which is then removed from the organic phase. The process removes a high percentage of the salts from the tar and reduces fouling and corrosion of downstream equipment.
Claims13
A process to remove salts from a byproduct tar produced from the production of phenol from cumene, which process comprises:
- a) producing phenol and a byproduct tar from cumene,
- b) mixing the tar with dilute aqueous ortho phosphoric acid,
- c) agitating the mixture of tar and acid,
- d) separating the mixture into an aqueous phase and an organic phase, and
- e) removing the aqueous phase and whereby at least 90% by weight of salts are removed from the tar.
Dependencies are inferred from the claim text.