ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,289, issued on May 27, was assigned to Kellogg Brown & Root LLC (Houston).

"Dividing wall column in alkylation process for reactor recycle and product separation" was invented by Bhari Bhujan Singh (Slough, Great Britain) and Ian Charles Elgey (Marlow, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dividing wall column is used in an alkylation process flow scheme to fractionate an alkylate reactor effluent to produce an iso-butane-rich stream as a recycle feed for the alkylation reactor while also separating iso-butane, normal butane and alkylate as separate product streams depending on the reactor effluent composition. In an optiona...