ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,087, issued on June 16.
"Apparatus and method of producing dimethyl carbonate by reactive distillation using hybrid heat integration" was invented by Jae Woo Lee (Daejeon, South Korea) and Minyong Lee (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a distillation apparatus having a various heat exchange methods added to a process of producing dimethyl carbonate using reactive distillation and pressure-swing distillation. According to the disclosure, internal and external heat integration between a high-pressure and a low-pressure distillation column, which constitute pressure-swing distillation columns, is applied t...