A long-term test of a new CO_2 sorbent (KEP-CO2P2) in a 0.5 MW_e CO_2 capture test bed

摘要

The performance of a new dry CO_2 sorbent KEP-CO2P2 was tested for an extended period of time of 650 hours in a 0.5 MW_e CO_2 capture test bed at Hadong coal-fired power plant. The mass-produced CO_2 dry sorbent, KEP-CO2P2 was tested for CO_2 sorption and regeneration capacity. With modification of the process as well as the use of KEP-CO2P2 sorbent in a 0.5 MW_e CO_2 capture test bed, 85% (81-90%) CO_2 removal rate was achieved in continuous operation of 650 hours. Samples were collected and analyzed using particle size analyzer (PSA), ion chromato-graph (IC), inductively coupled plasma (ICP), field emission-scanning electron Microscope (FE-SEM), electron probe X-ray micro-analyzer (EPMA) and X-ray difiractometer (XRD). The analysis showed that KEP-CO2P2 was not affected by SO_x, and there were no side reactions to consume K_2CO_3. However, the regeneration of the sorbent was not complete to need future investigation.