压差法非接触式浓缩机内浓度场在线检测系统研究  

Research on on-line measuring system of concentration field in non-contact thickener by pressure difference method

作　　者：石涵 李文学 刘海增[1] SHI Han;LI Wen-xue;LIU Hai-zeng(School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan,Anhui 202001,China;Yankuang Energy Group Company Limited,Jining,Shandong 273500,China)

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南202001 [2]兖矿能源集团股份有限公司,山东济宁273500

出　　处：《煤炭加工与综合利用》2024年第12期1-5,共5页Coal Processing & Comprehensive Utilization

基　　金：国家重点研发计划子课题:难选焦煤精深分选管间工艺环节精准控制技术(2023YFC2907705)。

摘　　要：浓缩池内煤泥水浓度的精准测量对于药剂的添加量至关重要,影响着后续煤泥水压滤回收工艺的效果。针对传统浓缩池内煤泥水浓度检测方法存在滞后性、误差较大等问题,设计了一款基于压差法非接触式浓缩机内浓度场的在线检测系统;将现场检测密度与同步采样测试密度进行分析对比验证检测系统的精度,通过MATLAB软件对测量密度和采样密度绘制密度等值图,进行可视化分析对比。根据密度等值图分析,在距离浓缩池中心点16 m处液位以下深度为2.2 m处,测得密度为1069.17 kg/m^(3),采样密度为1070.12 kg/m^(3),绝对误差为0.95 kg/m^(3),表明了在线检测系统具有良好的准确性。Accurate measurement of slurry concentration in thickener tanks is critical for determining the appropriate dosage of reagents,which directly impacts the effectiveness of the subsequent slurry dewatering and recovery process.To address the limitations of traditional slurry concentration detection methods,such as delayed response and significant measurement errors,a non-contact online concentration field detection system based on the differential pressure method was developed.The system's accuracy was validated by comparing the on-site detected density with synchronously sampled test density.Using MATLAB software,density contour maps were generated for a visual comparative analysis.The analysis of the density contour map shows that at a depth of 2.2 m below the liquid level and 16 m from the center of the thickener,the detected density was 1069.17 kg/m^(3),while the sampled density was 1070.12 kg/m^(3),resulting in an absolute error of 0.95 kg/m^(3).These results demonstrate the excellent accuracy of the online detection system.

关 键 词：煤泥水浓度 压差法 非接触式 可视化 在线检测 

分 类 号：TD946.2[矿业工程—选矿]