测量旋风分离器浓度场的双束伽马射线方法

摘要依据旋风分离器内浓度场分布的特点，建立了旋风分离器内颗粒浓度分布模型，由此提出了一种测量旋风分离器浓度场的双束伽马射线方法。该模型仅需2束射线测量旋风分离器的线平均浓度值，就可以确定模型中的k和ρ_R参数，进而获得整个旋风分离器横截面的浓度分布。为了验证模型的实用性，首先将以往文献中测量的浓度分布数据带入模型，计算表明该模型可以较好的逼近旋风分离器的浓度场；然后采用¹³⁷Cs射线源测量了直径260 mm旋风分离器的径向线平均浓度，结果表明实验测量计算的浓度分布与以往文献用其他方法测量结果对比具有很好的一致性。该双束伽马射线方法可以用于旋风分离器的浓度场的测量和监测。

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	刘小成
	宋健斐
	严超宇
	陈建义
	魏耀东

关键词：伽马射线旋风分离器浓度分布测量方法双束射线

Abstract： A method for measuring the concentration field in the cyclone with two-beam gamma ray has been put forward based on the characteristics of concentration distribution in the cyclone. The model contains the undetermined coefficients (k and ρ_R), which can be calculated from the only two path average concentrations that are measured by gamma ray device. The model was discussed with previous literature data for its reasonable. Also the experiment was carried out on the diameter 260 mm cyclone for measuring path average concentrations by ¹³⁷Cs radioactive source. The calculated results was compared with previous literature, the curves are agreement. So the two-beam gammaray method could be used in measuring and monitoring the concentration distribution in the cyclone.

Keywords： gamma-ray cyclone concentration distribution measurement method two-beam

Received 2013-07-24;

Fund:

国家高科技研究发展计划（863）（2011AA060802）；国家自然基金（21176250）。

Corresponding Authors: 魏耀东，电话：（010）89733939，E-mail:weiyd@cup.edu.cn。 Email: weiyd@cup.edu.cn

About author: 刘小成（1983-），男，博士研究生，从事多相流实验和分析方面的研究。

引用本文:

刘小成, 宋健斐, 严超宇, 陈建义, 魏耀东.测量旋风分离器浓度场的双束伽马射线方法[J]. 化学工业与工程, 2014,31(1): 43-47

LIU Xiao-Cheng, SONG Jian-Fei, YAN Chao-Yu, CHEN Jian-Yi, WEI Yao-Dong.A Method for Measuring Concentration Field in the Cyclone with Two-Beam Gamma Ray[J]. Chemcial Industry and Engineering, 2014,31(1): 43-47