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Performance Improvement of a 10 MWe Dry CO2 Capture Pilot Plant by Analyses of Sorbents

Kyeongsook Kim1, Kwang Sin Kim1, Seugran Yang1, Joong Beom Lee1, Tae Hyoung Eom1, Young Ho We1 and Chong Kul Ryu2

1. Creative Future Laboratory, KEPCO Research Institute, Daejeon 34056, Republic of Korea

2. KCCSA, Chemical Process Institute, Seoul National University, Seoul 08826, Republic of Korea


Abstract: After the successful completion of one-month operation of the 0.5 MWe dry CO2 capture test bed at #3 unit of Hadong coal-fired power plant, the construction of a 10 MWe dry CO2 capture pilot plant at #8 unit of Hadong coal-fired power plant had been completed in September 2013. This study summarizes the operation experience of the 10 MWe dry CO2 capture pilot plant and findings for improvements. The analyses of cation concentration, sulfate concentration, NMR (Nuclear Magnetic Resonance) and dielectric permittivity were done on the fresh and used sorbents sampled from the pilot plant. The analytical results were applied to improve cyclone performance, sorbent composition design, the optimization of auxiliary desulfurization facility, and sorbent regeneration condition. Electrostatic screening and pretreatment of the pilot plant materials were suggested through the measurement of dielectric permittivity of the sorbent. With modification of sorbent and the 10 MWe dry CO2 capture pilot plant during the shakedown test, a long-term operation of more than 1,000 hours has already been in progress.

Key words: CO2 capture, K2CO3-based CO2 sorbent, 0.5 MWe dry CO2 capture test bed, 10 MWe dry CO2 capture pilot plant.
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