中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Investigation of gas-solid flow characteristics in the cyclone dipleg of a pressurised circulating fluidised bed by ect measurement and cpfd simulation

文献类型:期刊论文

作者Zhu, Xiaoli1,2; Dong, Pengfei1; Tu, Qiuya1; Zhu, Zhiping1,2; Yang, Wuqiang3; Wang, Haigang1,2
刊名Measurement science and technology
出版日期2019-05-01
卷号30期号:5页码:14
ISSN号0957-0233
关键词Pressurised circulating fluidised bed Electrical capacitance tomography Cpfd Emms drag model Cross-correlation
DOI10.1088/1361-6501/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
URI标识http://www.irgrid.ac.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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来源:工程热物理研究所

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