Near-zero emission coal-fired power plant using advanced KM CDR process

•Advanced KM CDR Process™ is used to explore feasibility of high CO2 capture ratio.•The near-zero emission case is the same level of OPEX ($/tonneCO2) as the base.•A near-zero emission that recovers 99.5% of CO2 is technically feasible. CCS is expected to be one of the major measures contributing to carbon reduction and meet net zero emission in near future. Fossil fuel power plants equipped with CCS can be considered to be zero-carbon power generation if nearly full CO2 recovery is feasible. The objective of this paper is to investigate the process performance and plant economics at 99.5% CO2 capture ratio that has not been studied before using MHIENG’s CO2 capture technology. It is expected that this work using experiences and empirical data that MHIENG has accumulated is more indicative of current commercial CCS technology and economics than previous work. The near-zero emission design proposed in this work using 50% additional absorption packing achieves 99.5% capture ratio with similar normalized OPEX ($/tonne CO2) and 6% higher normalized CAPEX compared to base case at 90% capture ratio. Near-zero emission coal-fired power plant is technically feasible using the Advanced KM CDR Process™ and KS-1™ solvent and will increase cost of CO2 captured by 3% compared to default design at 90% capture ratio.