Pre-combustion: physical absorption (coal with CCUS)

In an integrated gasification combined-cycle coal power plant, coal is gasified into a synthesis gas, consisting of hydrogen and carbon monoxide. The synthesis gas is shifted in a water-gas-shift (WGS) reaction to produce additional hydrogen and convert the carbon monoxide into carbon dioxide. The carbon dioxide is then captured from the shifted syngas using physical separation processes, such as adsorption, and afterwards, the remaining hydrogen (H2) is combusted in a combined-cycle gas turbine that generates power.