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	CO2 Capture from Flue Gases Using Three Ca-Based Sorbents in a Fluidized Bed Reactor
	Li, Zhen-shan ; Fang, Fan ; Cai, Ning-sheng
	2010-10-12 ; 2010-10-12
关键词	CARBON-DIOXIDE SEPARATION FIRED POWER-PLANT CARBONATION/CALCINATION CYCLES COMBUSTION CALCINATION TEMPERATURE LIMESTONES SYSTEMS Engineering, Environmental Engineering, Civil Environmental Sciences
中文摘要	Experiments of CO2 capture and sorbent regeneration characteristics of limestone, dolomite, and CaO/Ca12Al14O33 at high temperature were investigated in a thermogravimetric analyzer (TGA) and a fluidized bed reactor. The effect of reactivity decay of limestone, dolomite, and CaO/Ca12Al14O33 sorbents on CO2 capture and sorbent regeneration processes was studied. The experimental results indicated that the operation time of high efficient CO2 capture stage declined continuously with increasing of the cyclic number due to the loss of the sorbent activity, and the final CO2 capture efficiency would remain nearly constant, due to the sorbent already reaching the final residual capture capacity. After the CO2 capture step, the Ca-based sorbents need to be regenerated to be used for a subsequent cycle, and the multiple calcination processes of Ca-based sorbent under different calcination conditions are studied and discussed. Reactivity loss of limestone, dolomite and CaO/Ca12Al14O33 sorbents from a fluidized bed reactor at both mild and severe calcination conditions was compared with the TGA data. At mild calcination conditions, TGA results of sorbent reactivity loss were similar to the experimental results of fluidized bed reactor for three sorbents at 850 degrees C calcination temperature, and this indicated that TGA experimental results can be used as a reference to predict sorbent reactivity loss behavior in fluidized bed reactor. At severe calcination condition, sorbent reactivity loss behavior for limestone and dolomite from TGA compare well with the result from a fluidized bed reactor.
语种	英语 ; 英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS ; RESTON ; 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79881]
专题	清华大学
推荐引用方式 GB/T 7714	Li, Zhen-shan,Fang, Fan,Cai, Ning-sheng. CO2 Capture from Flue Gases Using Three Ca-Based Sorbents in a Fluidized Bed Reactor[J],2010, 2010.
APA	Li, Zhen-shan,Fang, Fan,&Cai, Ning-sheng.(2010).CO2 Capture from Flue Gases Using Three Ca-Based Sorbents in a Fluidized Bed Reactor..
MLA	Li, Zhen-shan,et al."CO2 Capture from Flue Gases Using Three Ca-Based Sorbents in a Fluidized Bed Reactor".(2010).

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