ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,991, issued on May 12, was assigned to LyondellBasell Acetyls LLC (Houston).
"Removal of aldehydes in acetic acid production" was invented by Shane J. Weber (League City, Texas), Noel C. Hallinan (Loveland, Ohio) and Ryan J. Mathews (Tomball, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, distilling the solution to produce an overhead stream having a higher concentration of acetaldehyde, contacting the overhead stream, and optionally a hydroxyl compound, with an a...