无分离器的呼吸性粉尘浓度检测初步研究  

Preliminary study on the detection of respiratory dust concentration without separator

作　　者：赵政 刘国庆 林桂玲 ZHAO Zheng;LIU Guoqing;LIN Guiling(CCTEG Ningxia Tiandi Benniu Industrial Group Co.,Ltd.,Shizuishan 753001,China;Chinese Institute of Coal Science,Beijing 100013,China;State Key Laboratory of Coal Mine Disaster Prevention and Control,Chongqing 400037,China;CCTEG Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]宁夏天地奔牛实业集团有限公司,宁夏石嘴山753001 [2]煤炭科学研究总院有限公司,北京100013 [3]煤矿灾害防控全国重点实验室,重庆400037 [4]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《矿业安全与环保》2025年第1期55-60,69,共7页Mining Safety & Environmental Protection

基　　金：重庆市博士“直通车”项目(CSTB2023NSCQ-BSX0010);中国煤炭科工集团重点项目(2021-2-TD-ZD009)。

摘　　要：为解决分离器长时间运行带来的分离效能偏差、人工维护频繁等问题,亟须一种无分离器的呼吸性粉尘浓度检测方法。根据光散射理论,数值模拟研究粉尘颗粒粒径与光散射特性的关系;研制高分辨率光散射样机,构建亚利桑那A1标准粉尘的试验系统,研究不同粒径呼吸性粉尘的光散射特性;基于BMRC(British Medical Research Council,英国医学研究委员会)分离曲线,建立粉尘颗粒粒径与光散射特性相关的呼吸性粉尘浓度检测模型,初步形成无分离器的呼吸性粉尘浓度检测技术。试验验证发现:无分离器的呼吸性粉尘浓度检测技术能较准确检测的呼吸性粉尘浓度限值为55.2 mg/m^(3),检测误差为29.1%;该技术目前仅适用于低浓度下的呼吸性粉尘浓度检测。To address issues such as separation efficiency deviation and frequent manual maintenance caused by the prolonged operation of separators,there is an urgent need for a without separator method to detect the concentration of respirable dust.Based on numerical simulation of light scattering theory,the relationship between dust particle size and light scattering characteristics is studied.A high-resolution light scattering prototype has been developed,and an experimental system using Arizona A1 standard dust has been constructed to study the light scattering properties of respirable dust particles of various sizes.Based on the BMRC(British Medical Research Council)separation curve,a respirable dust concentration detection model that correlates dust particle size with light scattering characteristics has been established.This work has led to the preliminary development of a without separator respirable dust concentration detection technology.After experimental verification,it was found that the respirable dust concentration detection technology without separators can accurately detect the respirable dust concentration limit of≤55.2 mg/m^(3) with a detection error of 29.1%.Currently,this technology is only suitable for detecting respirable dust concentrations at low levels.

关 键 词：无分离器 呼吸性粉尘 浓度检测 MIE散射 光散射特性 

分 类 号：TD714[矿业工程—矿井通风与安全]