Estimation of Thermal Efficiency for IG-MCFC System

Abstract

IG-MCFC power generation plant efficiency is higher than that of IGCC. We estimated a IG-MCFC power generation plant efficiency that combines O₂ blown type or Air blown type gasifire and a wet gas purification unit.
First, we surveyed wet gas purification systems in point of motive power and util-ity. Three types of wet gas sulfur absorbing processes (MDEA, Selexsol and DEA process) were investigated. Among these, the motive power and utilities of the MDEA process showed the smallest. We recognized the MDEA process is most hopeful among proposed wet gas sulfur absorbing processes.
The thermal efficiency of the IG-MCFC power generation plant was studied using software developed by CRIEPI in 1994. From the results, we concluded that the net thermal efficiency of the system is about 50%.