Granular bed filter: A promising technology for hot gas clean-up

被引：122

作者：

Xiao, Gang ^{[1
]}

Wang, Xihui ^{[1
]}

Zhang, Jiapeng ^{[1
]}

Ni, Mingjiang ^{[1
]}

Gao, Xiang ^{[1
]}

Luo, Zhongyang ^{[1
]}

Cen, Kefa ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Inst Thermal Power Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

POWDER TECHNOLOGY | 2013年 / 244卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Granular bed filter; Hot gas clean-up; IGCC; PFBC; FLUIDIZED-BED; CAKE FORMATION; HIGH-TEMPERATURE; FILTRATION; FLOW; ELUTRIATION; SEPARATION; PARTICLES; VELOCITY; ORGANICS;

D O I：

10.1016/j.powtec.2013.04.003

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hot gas clean-up is important in the integrated gasification combined cycle (IGCC) and advanced pressurized fluidized-bed combustion (PFBC) technologies, which have greater efficiencies and less environmental impacts. The present work attempts to provide a general understanding of granular bed filters, a promising technology for hot gas clean-up. Granular bed filters can be designed as fixed beds, fluidized beds and moving granular beds, and in this paper, their characteristics and performances are summarized and discussed. A fixed bed granular filter has the disadvantage that gas flow must be stopped periodically for cleaning; however, its particle collection efficiency is greater than 99%. A fluidized bed filter provides continuous operation, though it is less efficient at removing small particles. Moving granular beds are promising for hot gas clean-up because typically, they operate continuously with high filtration efficiencies (over 97%) and small pressure losses. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：93 / 99

页数：7

共 59 条

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