基于光散射理论的煤层气颗粒杂质质量浓度研究  

Research on Mass Concentration of Particulate Matter in Coalbed Methane Based on Light Scattering Theory

作　　者：乔丹 王志勇 刘建丽 QIAO Dan;WANG Zhiyong;LIU Jianli(School of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China;Shanxi Guohua Energy Co.,Ltd,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西国化能源有限责任公司,山西太原030006

出　　处：《山西大学学报（自然科学版）》2024年第6期1238-1245,共8页Journal of Shanxi University(Natural Science Edition)

摘　　要：分析和精确测定煤层气中颗粒杂质的质量浓度对保障煤层气质量和煤层气集输系统的安全具有重要意义。本文对光散射法测量颗粒物的质量浓度进行了理论和实验研究。对煤层气中常见的粉尘颗粒物,理论上分析了光源波长、颗粒物粒径、颗粒物折射率对散射光分布的影响。实验选用532 nm激光作为光源,对标准粉尘颗粒物进行了散射实验,该实验装置可以有效应用于大质量浓度范围的颗粒物质量浓度测定;同时,实验标定90°~110°为最优化散射角,在该散射角下测量的质量浓度平均相对误差最小,约5%。For the purpose of assuring the quality of coalbed methane and the security of the coalbed methane gathering and transportation system,analysis and precise measurement of the mass concentration of particulate matter in coalbed methane are of greatest importance.In this paper,theoretical and experimental researches are used to determine the mass concentration of particulate matter using the light scattering method.Theoretically,the distribution of scattered light for typical dust particles in coalbed methane was examined in relation to the wavelength of the light source,the size of the particles,and the refractive index of the particles.The experiment employed a 532 nm laser as its light source and tested the scattering of common dust particles.This experiment can be utilized to determine particle mass concentration with effectiveness in a wide concentration range.Additionally,the ideal scattering angle,with an average relative error of the measured mass concentration at only about 5%,is between 90 and 110 degrees.

关 键 词：颗粒物质量浓度 光散射法 颗粒物粒径 散射角 

分 类 号：O439[机械工程—光学工程]