基于感应式静电传感器的流化床中颗粒循环时间的测量

doi:10.3969/j.issn.0438-1157.2012.05.010

化工学报 ›› 2012, Vol. 63 ›› Issue (5): 1391-1397.DOI: 10.3969/j.issn.0438-1157.2012.05.010

基于感应式静电传感器的流化床中颗粒循环时间的测量

许南，黄正梁，王靖岱，阳永荣

化学工程联合国家重点实验室，浙江大学化学工程与生物工程学系

收稿日期:2011-09-18 修回日期:2012-02-24 出版日期:2012-05-05 发布日期:2012-05-05
通讯作者: 王靖岱

Measurement of circulation time of particles in fluidized bed based on electrostatic induction sensor

XU Nan，HUANG Zhengliang，WANG Jingdai，YANG Yongrong

State Key Laboratory of Chemical Engineering，Department of Chemical and Biochemical Engineering,Zhejiang University

Received:2011-09-18 Revised:2012-02-24 Online:2012-05-05 Published:2012-05-05

摘要/Abstract

关键词: 静电感应, 气固流化床, 颗粒循环时间, 傅里叶变换, 基频

Abstract: The circulation time of particles is an important parameter describing the fluidization quality in fluidized bed.A new method for the measurement of circulation time of particles in fluidized bed based on the electromagnetic induction of the moving charges was proposed，and a detection model of electrostatic induction sensor was established.The experimental study showed that the relationship between the dominant frequency of electrostatic fluctuations and the circulation time of particles was T_e=5.668/f₀ at different superficial gas velocities between 0.12 m·s^-1 and 0.48 m·s^-1.The correlation coefficient between the experimental results and the model results was 0.9765，and the value of the root mean square error of prediction (RMSEP)was 0.0241.Thus，a simple，safe and precise method to determine the circulation time of particles applicable to the online measurement was presented.

Key words: electrostatic induction, gas-solids fluidized bed;circulation time of particles, Fourier transform, dominant frequency

中图分类号:

TQ021

许南，黄正梁，王靖岱，阳永荣. 基于感应式静电传感器的流化床中颗粒循环时间的测量[J]. 化工学报, 2012, 63(5): 1391-1397.

XU Nan，HUANG Zhengliang，WANG Jingdai，YANG Yongrong. Measurement of circulation time of particles in fluidized bed based on electrostatic induction sensor[J]. CIESC Journal, 2012, 63(5): 1391-1397.

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基于感应式静电传感器的流化床中颗粒循环时间的测量

Measurement of circulation time of particles in fluidized bed based on electrostatic induction sensor

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