This Paper presents comparison of syngas compositions, for all coal ranks, as produced from different types of coal gasification
processes currently in use, namely entrained flow, fluidized bed, and fixed bed gasifiers. Cold gas and carbon conversion efficiencies
were investigated. The syngas composition varies with the applied gasification process. The importance of this research arises
from the fact that gasifiers produce the environmentally clean fuel required to run any Integrated Gasification Combined Cycle
power system. A procedure was conducted to get estimates for bituminous coal. It is important to have knowledge of the chemical
reactions which take place in each gasifier and the raw syngas produced from the specific reaction involved to develop an Integrated
Coal Gasification Combined Power Generation plant with CO2 recovery in order to increase the cycle efficiency and mitigate CO2
emission and other pollutants. The results indicate that the entrained flow gasifier is the dominant one.