Frequency comparative study of coal-fired fly ash acoustic agglomeration

作     者：Jianzhong Liu Jie Wang Guangxue Zhang Junhu Zhou Kefa Cen 

作者机构：State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou 310027China Institute for Energy EngineeringChina Jiliang UniversityHangzhou 310018China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2011年第23卷第11期

页      面：1845-1851页

核心收录：

学科分类：081702[工学-化学工艺] 080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Basic Re-search Program (973) of China(No.2010CB227001) the National Natural Science Foundation of China(No.50576083) the Program New Century Excellent Talents University(No.NCET-04-0533) the Zhejiang Provin-cial Natural Science Foundation of China(No.Y1100299) 

主　　题：coal-fired fly ash acoustic agglomeration frequency agglomeration kernel orthogonal design 

摘      要：Particulate pollution is main kind of atmospheric *** fine particles are seriously harmful to human health and *** agglomeration is considered as a promising pretreatment technology for fine particle *** mechanisms of acoustic agglomeration are very complex and the agglomeration efficiency is affected by many *** most important and controversial factor is *** studies between high-frequency and low-frequency sound source to agglomerate coal- fired fly ash were carried out to investigate the influence of frequency on agglomeration *** agglomeration theoretical analysis,experimental particle size distributions （PSDs） and orthogonal design were *** results showed that the 20 kHz high-frequency sound source was not suitable to agglomerate coal-fired fly *** within the size ranging from 0.2 to 0.25 μm the particles agglomerated to adhere together,and the agglomerated particles were smaller than 2.5 μ*** application of low-frequency （1000–1800 Hz） sound source was proved as an advisable pretreatment with the highest agglomeration efficiency of 75.3%,and all the number concentrations within the measuring range *** design L16 （4） 3 was introduced to determine the optimum frequency and optimize acoustic agglomeration *** to the results of orthogonal analysis,frequency was the dominant factor of coal-fired fly ash acoustic agglomeration and the optimum frequency was 1400 Hz.