Measurement of gas-solids flow in loop seal and external heat exchanger in a circulating fluidized bed

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	Measurement of gas-solids flow in loop seal and external heat exchanger in a circulating fluidized bed
	Wang, Haigang 1; Li, Yi 2; Qiu, Guizhi 1; Song, Guoliang 1; Yang, Wuqiang 3
刊名	POWDER TECHNOLOGY
	2014-11-01
卷号	266 页码:249-261
关键词	ECT External heat exchanger Fluidized bed Solids flow Pneumatic control
英文摘要	In a circulating fluidized bed (CFB) with an external heat exchanger (EHE) and a pneumatically controlled loop seal, it is important to measure the gas-solids flow in the loop seal and EHE, for high combustion efficiency. For this purpose, electrical capacitance tomography (ECT) has been applied. Two circular ECT sensors with eight electrodes each are mounted in the two exports of the pneumatically controlled loop seal to monitor the solids flow in the "cold" CFB system. Dynamics tests with different operating conditions were carried out. 2D and 3D images of the cross sections of the exports were reconstructed. The ECT results are analyzed with the pressure drop. The power spectral density (PSD) of signals is obtained by Welch's method and wavelet decomposition in the time domain is implemented for capacitance signals with different conditions. The experimental result indicates that the gas-solids flow can be controlled by pneumatically controlled loop seal based on ECT and pressure drop measurements. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	ELECTRICAL-CAPACITANCE TOMOGRAPHY ; IMAGE-RECONSTRUCTION ALGORITHMS ; CO2 CAPTURE ; COLD MODEL ; PRESSURE-FLUCTUATIONS ; SYSTEM ; REGIMES ; BOILER ; ECT
收录类别	SCI
语种	英语
WOS记录号	WOS:000341221800030
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/105997]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Thermophys Engn, Beijing 100190, Peoples R China 2.Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB3 0HE, England 3.Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
推荐引用方式 GB/T 7714	Wang, Haigang,Li, Yi,Qiu, Guizhi,et al. Measurement of gas-solids flow in loop seal and external heat exchanger in a circulating fluidized bed[J]. POWDER TECHNOLOGY,2014,266:249-261.
APA	Wang, Haigang,Li, Yi,Qiu, Guizhi,Song, Guoliang,&Yang, Wuqiang.(2014).Measurement of gas-solids flow in loop seal and external heat exchanger in a circulating fluidized bed.POWDER TECHNOLOGY,266,249-261.
MLA	Wang, Haigang,et al."Measurement of gas-solids flow in loop seal and external heat exchanger in a circulating fluidized bed".POWDER TECHNOLOGY 266(2014):249-261.