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

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Sung-Ho Jo²  Chang-Keun Yi²  Yongwon Seo¹ 

[1] Department of Chemical Engineering, Changwon National University;Clean Energy System Research Center, Korea Institute of Energy Research

关键词: CO2 Capture;    Solid Sorbent;    Voidage;    Dual Circulating Fluidized Bed Reactor;    Pressure Balance Curve;   

DOI  :  10.1252/jcej.07WE064

来源: Maruzen Company Ltd

【 摘 要 】

References(10)Cited-By(16)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.

【 授权许可】

Unknown