The Effect of Voidage on the CO_2 Sorption Capacity of K-Based Sorbent in a Dual Circulating Fluidized Bed Process
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概要
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The performance of the CO2 capture of a potassium-based dry sorbent was investigated in a dual circulating fluidized bed process. The dual circulating fluidized bed process consisted of a carbonation reactor and a regeneration reactor. It was operated in the continuous solid circulation mode between a fast fluidized-bed carbonator of 6 m in height and a bubbling fluidized-bed regenerator. As the solid circulation rate increased from 7 to 36 kg/m2/s, the CO2 removal of the potassium sorbent, sorbKX40, increased from 25 to 55% and the mean voidage was maintained from 0.94 to 0.99 representing the dilute phase in the fluidization regime. The continuous solid circulation behavior in a dual fluidized bed process was well expressed by a single closed loop in a pressure balance curve that indirectly explained the direction of the sorbent flow and the mean bulk densities of the gas–solid mixture. The information on hydrodynamics and sorption capacity will be used for the conceptual and scale-up design of the system.
- 社団法人 化学工学会の論文
- 2008-07-01
著者
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Jo Sung-ho
Zero Emission Technology Research Center Korea Institute Of Energy Research
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YI CHANG-KEUN
Korea Institute of Energy Research
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Yi Chang-keun
Zero Emission Technology Research Center Korea Institute Of Energy Research
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SEO Yongwon
Department of Chemical Engineering, Korea Advanced Institute of Science and Technology
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Seo Yongwon
Department Of Chemical Engineering Changwon National University
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YI Chang-Keun
Clean Energy System Research Center, Korea Institute of Energy Research
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JO Sung-Ho
Clean Energy System Research Center, Korea Institute of Energy Research
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