ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,643, issued on April 21, was assigned to Chevron Phillips Chemical Co. LP (The Woodlands, Texas).
"Systems and techniques for polymer degassing" was invented by Kenneth A Dooley (Kingwood, Texas), Jeffrey S. Lowell (Kingwood, Texas), Joseph A. Curren (Kingwood, Texas) and Rebecca A Gonzales (The Woodlands, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A purge system for a polymerization system may include a purge column including a stripping zone and a stripping fluid distributor below the stripping zone for injecting a stripping fluid including one or more light olefins. A first displacement zone is below the distributor. A second displacem...