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	Experimental study on gas-solids flows in a circulating fluidised bed using electrical capacitance tomography
	Wang, Cuiping ; Lv, Zian ; Li, Dingkai
	2010-05-11 ; 2010-05-11
关键词	circulating fluidised bed electrical capacitance tomography gas-solids flow flow conditioning parts Engineering, Chemical
中文摘要	It is difficult to measure the gas-solids flow in a circulating fluidised bed (CFB) because of the complicated and rapid transient process. Electrical capacitance tomography (ECT), a cross-sectional imaging technique, has been used to measure the dilute flow in a large square CFB. A sensor has been specifically designed for the measurement and a new algorithm has been developed for image reconstruction. Flow conditioning parts (internals) are designed and placed inside the CFB, aiming to enhance the contact between gas and particles in the dilute gas-solids flow. The dynamic characteristics and detailed information were obtained on two sections in the bed at different height. The performance of the internals is related to their size, combination, height in the bed and the superficial gas velocity. It has been confirmed that a particular combination of internals can increase the solids concentration in the central area of a cross-section, and can improve the probability density distribution (PDD) with a moderate gas velocity. Using a combination of a large internal at an upper location and a small one at a lower location can optimise the flow in the CFB. (c) 2007 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE SA ; LAUSANNE ; PO BOX 564, 1001 LAUSANNE, SWITZERLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25735]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Cuiping,Lv, Zian,Li, Dingkai. Experimental study on gas-solids flows in a circulating fluidised bed using electrical capacitance tomography[J],2010, 2010.
APA	Wang, Cuiping,Lv, Zian,&Li, Dingkai.(2010).Experimental study on gas-solids flows in a circulating fluidised bed using electrical capacitance tomography..
MLA	Wang, Cuiping,et al."Experimental study on gas-solids flows in a circulating fluidised bed using electrical capacitance tomography".(2010).

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