CO2 capture in integrated gasification combined cycle with SEWGS - Part A: Thermodynamic performances

► SEWGS separates H2S together with CO2 with efficiency benefits. ► Sorbent capacity is critical to make SEWGS a competitive technology. ► Efficiency penalty of SEWGS is about 7% points with 95% CO2 avoided. ► Optimal CO2 capture ratio depends on total sorbent volume. ► SEWGS achieves a specific energy consumption for CO2 avoided of 2.1 MJ/kgCO2.