A novel adsorption cycle for CO2 recovery:: Experimental and theoretical investigations of a temperature swing compression process

A novel adsorption cycle is examined experimentally and theoretically for recovering carbon dioxide from a 50 mol% mixture with carbon monoxide. Several adsorbents are considered, and zeolite NaY is chosen for the process due to its high capacity and selectivity for CO 2 in the presence of CO. The process consists of three steps. The bed is fed the gas mixture at 273 K until CO 2 breakthrough occurs. The bed then undergoes countercurrent blowdown of CO 2 while heating at 391 K and is finally cooled to the initial feed temperature once the bed has been depleted of CO 2 . Results are presented from laboratory scale experiments and are described using numerical simulations. This novel cycle provides a method for capturing and producing CO 2 without the need for a purge gas and has low energy requirements if waste heat is available.