Elimination of stagnant particles from a N-valve with side aeration in circulating fluidized bed

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Elimination of stagnant particles from a N-valve with side aeration in circulating fluidized bed
	Dong, Li 1; Ji, Wenfeng 1,2; Zhao, Zhigang 1,2; Xu, Guangwen 1
刊名	ADVANCED POWDER TECHNOLOGY
	2014-05-01
卷号	25 期号:3 页码:1155-1161
关键词	Circulating fluidized bed Non-mechanical valve Solid circulation rate Stagnant particle layer N-valve with side aeration
ISSN号	0921-8831
其他题名	Adv. Powder Technol.
中文摘要	The existence of stagnant particle layer in the conventional non-mechanical valves limits their utilization in CFB with the feedstock of caking particles. A new N-valve consisted of a fluidized weir chamber with bottom aeration and a moving-bed angled standpipe with side aeration was developed to eliminate the stagnant particle layer and reach high solids circulation rate G(s) in CFBs. The particle flow behavior and its control in the N-valve were studied experimentally. By combining the bottom aeration for weir chamber and the side aeration for angled standpipe the G(s) over 270 kg/(m(2) s) was achieved, and the stagnant particle layer completely disappeared. The G(s) increased with increasing the side aeration gas flow rate Q(sa), and this loosing gas flow was optimally injected from the bend between the downcomer and the angled standpipe. At a constant but enough high Q(sa), the increase in the bottom aeration gas flow rate Q(ba) elevated G(s) linearly. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
英文摘要	The existence of stagnant particle layer in the conventional non-mechanical valves limits their utilization in CFB with the feedstock of caking particles. A new N-valve consisted of a fluidized weir chamber with bottom aeration and a moving-bed angled standpipe with side aeration was developed to eliminate the stagnant particle layer and reach high solids circulation rate G(s) in CFBs. The particle flow behavior and its control in the N-valve were studied experimentally. By combining the bottom aeration for weir chamber and the side aeration for angled standpipe the G(s) over 270 kg/(m(2) s) was achieved, and the stagnant particle layer completely disappeared. The G(s) increased with increasing the side aeration gas flow rate Q(sa), and this loosing gas flow was optimally injected from the bend between the downcomer and the angled standpipe. At a constant but enough high Q(sa), the increase in the bottom aeration gas flow rate Q(ba) elevated G(s) linearly. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. 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]	LOOP-SEAL ; OPERATION ; BEHAVIOR
收录类别	SCI
原文出处	://WOS:000337216000048
语种	英语
WOS记录号	WOS:000337216000048
公开日期	2014-08-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/10896]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Dong, Li,Ji, Wenfeng,Zhao, Zhigang,et al. Elimination of stagnant particles from a N-valve with side aeration in circulating fluidized bed[J]. ADVANCED POWDER TECHNOLOGY,2014,25(3):1155-1161.
APA	Dong, Li,Ji, Wenfeng,Zhao, Zhigang,&Xu, Guangwen.(2014).Elimination of stagnant particles from a N-valve with side aeration in circulating fluidized bed.ADVANCED POWDER TECHNOLOGY,25(3),1155-1161.
MLA	Dong, Li,et al."Elimination of stagnant particles from a N-valve with side aeration in circulating fluidized bed".ADVANCED POWDER TECHNOLOGY 25.3(2014):1155-1161.