ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,144, issued on Sept. 16, was assigned to LG Chem Ltd. (Seoul, South Korea).
"Heat integration separation system" was invented by Yong Suk Choi (Daejeon, South Korea), Sung Kyu Lee (Daejeon, South Korea) and Yeon Uk Choo (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a heat integration separation system including a first column, a second column, a compressor, a first heat exchanger and a second heat exchanger, wherein an upper discharge stream of the first column passes through the compressor to be compressed and then heat-exchanged with a lower discharge stream of the second column in the second heat exchanger, whe...