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	Investigation of gas-solid flow characteristics in the cyclone dipleg of a pressurised circulating fluidised bed by ect measurement and cpfd simulation
	Zhu, Xiaoli1,2; Dong, Pengfei1; Tu, Qiuya1; Zhu, Zhiping1,2; Yang, Wuqiang3; Wang, Haigang1,2
刊名	Measurement science and technology
	2019-05-01
卷号	30期号:5页码:14
关键词	Pressurised circulating fluidised bed Electrical capacitance tomography Cpfd Emms drag model Cross-correlation
ISSN号	0957-0233
DOI	10.1088/1361-6501/aafd7e
通讯作者	Wang, haigang(wanghaigang@iet.cn)
英文摘要	To optimize the design and operation of a pressurised circulating fluidised bed (pcfb) system, it is necessary to understand the gas-solid flow characteristics and properly measure the solid circulation flux in the cyclone dipleg and loop-seal of the pcfb. in this research, electrical capacitance tomography (ect) measurement and computational particle fluid dynamic (cpfd) simulation are combined to investigate the multiphase flow behaviour of a 'cold' pcfb, in particular the cyclone dipleg. a dual-plane ect sensor is used for visualisation and online monitoring of the particle distribution. the particle velocity is measured by crosscorrelation of two signals from capacitance electrodes, and the circulation flux is analysed. in addition, 3d full-loop cpfd simulation incorporating an energy-minimization multi-scale (emms) drag model is performed on a barracuda platform, to understand the gas-solid hydrodynamic behaviour, validate and supplement the experimental measurements. the results show that the cpfd prediction agrees well with the ect measurement in terms of the particle volume fraction distribution, velocity and circulation flux. the time-averaged gas-solid flow behaviour, instantaneous hydrodynamic features and the effects of operating pressure on particle distribution and the flow regime in the pcfb dipleg are unravelled. this is the first investigation of a solid circulation flux measurement in the cyclone dipleg and loop-seal of a pcfb system using a combination of ect measurements, cross-correlation and cpfd simulation with high-pressure operational conditions.
WOS关键词	ELECTRICAL CAPACITANCE TOMOGRAPHY ; IMAGE-RECONSTRUCTION ALGORITHM ; HIGH-DENSITY CFB ; LOOP SEAL ; EULERIAN SIMULATION ; MODEL ; HYDRODYNAMICS ; PARTICLES ; REGIMES ; SYSTEM
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Multidisciplinary ; Instruments & Instrumentation
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000462889400001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373497
专题	工程热物理研究所
通讯作者	Wang, Haigang
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
推荐引用方式 GB/T 7714	Zhu, Xiaoli,Dong, Pengfei,Tu, Qiuya,et al. Investigation of gas-solid flow characteristics in the cyclone dipleg of a pressurised circulating fluidised bed by ect measurement and cpfd simulation[J]. Measurement science and technology,2019,30(5):14.
APA	Zhu, Xiaoli,Dong, Pengfei,Tu, Qiuya,Zhu, Zhiping,Yang, Wuqiang,&Wang, Haigang.(2019).Investigation of gas-solid flow characteristics in the cyclone dipleg of a pressurised circulating fluidised bed by ect measurement and cpfd simulation.Measurement science and technology,30(5),14.
MLA	Zhu, Xiaoli,et al."Investigation of gas-solid flow characteristics in the cyclone dipleg of a pressurised circulating fluidised bed by ect measurement and cpfd simulation".Measurement science and technology 30.5(2019):14.

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