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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 31, 2008
Accepted December 11, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Agglomeration of particles during coal combustion in multistage spouted fluidized tower

Jia-Xun Liu Ji-Hui Gao^† Jian-Min Gao Xiao-Feng Wang Shao-Hua Wu

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China

gaojh@hit.edu.cn

Korean Journal of Chemical Engineering, May 2009, 26(3), 907-912(6), 10.1007/s11814-009-0152-4

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Abstract

An experimental platform of spray agglomeration has been designed and built for removing small fly ash particles (PM10) from coal combustion. Systematic experiments were conducted in a multistage spouted tower using kinds of agglomerant solutions. The particle concentration increases greatly from the first stage to the second stage of the tower. With the increase of flue gas flow rate the oscillation of impulse signal response curves increases and the internal circulation of the tower intensifies. The influencing factors such as the surfactant, PH value, flow rate of the agglomerant solutions and inlet flue gas temperature were analyzed. SEM was used to analyze the microstructure of the particles. Final results indicate that the special shape of a multistage spouted fluidized tower has significant influences on the effect of agglomeration. The findings from this work will be helpful to form the basis, and provide guidance for, further studies on the control of fine particles such as PM2.5 or even smaller.

Keywords

Coal Combustion Deep De-dust Submicron Particles Spray Agglomeration Multistage Spouted

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