Continuous operation of the potassium-based dry sorbent CO2 capture process with two fluidized-bed reactors |
| |
| Institution: | 1. Korea Institute of Energy Research, 71-2 Jang-dong, Daejeon 305-343, Republic of Korea;2. Korea Electric Power Research Institute, 103-16 Munji-dong, Daejeon 305-380, Republic of Korea;1. School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea;2. Petroleum & Marine Resources Division, Korea Institute of Geoscience & Mineral Resources (KIGAM), Daejeon 305-350, Republic of Korea;3. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea;1. College of Engineering and Applied Science, University of Wyoming, Laramie, WY 82071, USA;2. College of Urban and Environmental Science, Northwest University, Xian 710127, China;3. School of Energy Resources, University of Wyoming, Laramie, WY 82071, USA;4. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;2. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China |
| |
| Abstract: | The dry sorbent CO2 capture process is an advanced concept to efficiently remove CO2 from flue gas with two fluidized-bed reactors. This paper summarizes the results of performance of the two fluidized-bed reactors in the continuous solid circulation mode to investigate the feasibility of using potassium carbonate-based solid sorbent (Sorb KX35). The parameters such as gas velocity, solid circulation, carbonation temperature, and water vapor content were investigated during several continuous operations of two fluidized-bed reactors. The CO2 removal increased as gas velocity was decreased and as solid circulation rate was increased. The CO2 removal ranged from 26% to 73% was rather sensitive to the water vapor content among other parameters. A 20 h continuous operation conducted in a bench scale fast fluidized-bed reactor system indicated that the spray-dried potassium-based sorbent, Sorb KX35 having superior attrition resistance and high bulk density, had a promising CO2 removal capacity of 50–73% at steady state and was able to regenerate and reuse. The results from this work are good enough to prove the concept of the dry sorbent CO2 capture process to be one of viable methods for capturing CO2 from dilute flue gas of fossil fuel-fired power plants. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
