ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,115, issued on Sept. 1, was assigned to NUOVO PIGNONE TECNOLOGIE-S.R.L. (Florence, Italy).

"Once through CO 2 absorber with integrated ammonia slip mitigation and intercooling" was invented by Michael Balfe (Mainz, Germany) and Giulia Chiavaroli (Chieti, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process of removing CO2 includes: contacting, in a first absorber stage, a CO2-containing gas stream with a solution mixture to generate a partially cleaned gas stream; contacting, in a second absorber stage, the partially cleaned gas stream with a CO2-lean solution to generate a further cleaned gas stream that contains ammonia and a CO2-partial...