US Patent Issued to UOP, China Petroleum & Chemical on July 28 for "Contaminant removal from coal tar-derived crude phenols" (Illinois, Texas Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,216, issued on July 28, was assigned to UOP LLC (Des Plaines, Ill.) and China Petroleum & Chemical (Beijing).

"Contaminant removal from coal tar-derived crude phenols" was invented by Liwei Guo (Katy, Texas) and Neelesh Rane (Des Plaines, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for removing contaminants from coal-derived phenols is described. The process combines an extraction process with at least two adsorption zones containing adsorbents. Liquid-liquid and acid base extraction processes can be used. The adsorbents can be clays and/or zeolites. The process can be used to reduce organonitrogen compounds and organosulfur compou...