Post‐Combustion Carbon Capture

Abstract

AbstractCarbon capture and storage (CCS) has been seen as a promising means for reducingCO2emission from point sources. This article first reviews the typical post‐combustion carbon capture techniques, such as temperature swing, pressure swing, electrical swing processes, membrane separation, and the recent developments on adsorbents, adsorption, and absorption processes, and then focuses on opportunities and challenges in post‐combustionCO2capture. In the section on absorption processes, attention has been given to Kerr‐McGee/ABBLummus Crest technology, the Fluor EconamineFG PlusSMprocess, the Kansai Mitsubishi Carbon Dioxide Recovery Process, aqueous ammonia (NH3) process, chilled ammonia process, dual‐alkali absorption, and strong alkali absorption. In the section on adsorption processes, discussions start from fixed‐bed configuration, circulating fluidized beds, and counter‐current‐bed configurations, and then the focus will turn to various adsorbents, such as zeolites adsorbents, carbon adsorbents, amine‐functionalized adsorbents, wet impregnation, amine‐functionalizedTiO2nanotubes, amines covalently tethered to oxide supports, metal organic frameworks (MOFs), and alkali metal‐promoted metal oxides.