US Patent Issued to Evonik Oxeno on May 27 for "Energy-efficient process for removing butenes from C4-hydrocarbon streams" (German Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,313, issued on May 27, was assigned to Evonik Oxeno GmbH & Co. KG (Marl, Germany).

"Energy-efficient process for removing butenes from C4-hydrocarbon streams" was invented by Philip Lutze (Dinslaken, Germany), Stephan Peitz (Oer-Erkenschwick, Germany), Armin Matthias Rix (Marl, Germany), Tanita Valerie Six (Dortmund, Germany), Moritz Schroder (Muenster, Germany) and Niklas Paul (Marl, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilizati...