Process simulation of CO₂ chemical absorption based on self-heat recuperation technology for pre-combustion process

The pre-combustion capture is widely applied in hydrogen production which consists of gasification/reform process with H₂/CO₂ separation process, and the H₂/CO₂ separation process is applied to integrated coal gasification combined cycle power plant (IGCC). IGCC can achieve higher power generation efficiency than conventional power plant. However, CO₂ capture process reduces this efficiency. This is because CO₂ separation from gas mixtures requires huge amount of energy. In this study, we analyzed the precombustion process combined CO₂ separation process based on self-heat recuperation technology (SHR). The electric generation efficiency can be improved by SHR compared with conventional IGCC.