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Seo, Yongwon
Advanced Clean Energy Lab (ACE Lab)
Research Interests
  • Gas Hydrates, Greenhouse Gas, Clean Energy

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The Effect of Voidage on the CO2 Sorption Capacity of K-Based Sorbent in a Dual Circulating Fluidized Bed Process

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Title
The Effect of Voidage on the CO2 Sorption Capacity of K-Based Sorbent in a Dual Circulating Fluidized Bed Process
Author
Yi, Chang-KeunJo, Sung-HoSeo, Yongwon
Keywords
CO2 capture;  Dual circulating fluidized bed reactor;  Pressure balance curve;  Solid sorbent;  Voidage
Issue Date
2008-07
Publisher
SOC CHEMICAL ENG JAPAN
Citation
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, v.41, no.7, pp.691 - 694
Abstract
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/8074
DOI
10.1252/jcej.07WE064
ISSN
0021-9592
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UEE_Journal Papers
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