基于β射线吸收法的PM2.5连续自动监测的关键技术研究
|
摘要
首先通过数值仿真对PM2.5旋风分离器进行优化设计和实验验证,得到满足性能标准的PM2.5旋风分离器,然后通过流量闭环控制技术,设计出24 h瞬时流量和平均流量均符合标准的流量控制系统,最后通过数据统计处理和线性回归分析,得到符合指标的线性回归曲线。通过参比方法对比实验,该PM2.5连续自动监测仪平行性为8.1%,线性回归曲线斜率为0.96,截距为1.1,相关系数为0.976,测量数据符合标准,实现了PM2.5的高精度测量。
Firstly,optimization design and experimental verification through the numerical simulation of PM2. 5 cyclone separator were done,and PM2. 5 cyclone separator meeting the performance criterion was gotten. Through flow closed loop control technology,the flow control system in accordance with 24 h of instantaneous flow rate and the average flow rate was designed. Finally through data statistical processing and linear regression analysis,linear regression curve conformed to the index was gotten.Through contrast experiments,the PM2. 5 continuous automatic monitor parallelism is 8. 1%,the linear curve slope is 0. 96,intercept is 1. 1,and the correlation coefficient is 0. 976. The measurement data conforms to the standard,and realizes high accuracy measurement of PM2. 5.
Firstly,optimization design and experimental verification through the numerical simulation of PM2. 5 cyclone separator were done,and PM2. 5 cyclone separator meeting the performance criterion was gotten. Through flow closed loop control technology,the flow control system in accordance with 24 h of instantaneous flow rate and the average flow rate was designed. Finally through data statistical processing and linear regression analysis,linear regression curve conformed to the index was gotten.Through contrast experiments,the PM2. 5 continuous automatic monitor parallelism is 8. 1%,the linear curve slope is 0. 96,intercept is 1. 1,and the correlation coefficient is 0. 976. The measurement data conforms to the standard,and realizes high accuracy measurement of PM2. 5.
引文
[1]狄文静.基于β射线法的PM2.5连续在线监测的相关问题研究[D].天津:天津大学,2013.
[2]唐守强.基于CFD的旋风分离器性能参数影响研究[D].山东:山东理工大学,2015.
[3]蔡刚.环境空气中的PM2.5测定方法[J].甘肃科技,2012,28(12):45-47.
[4]惠立锋.基于RSM的呼吸性粉尘旋风分离器分离效能数值模拟研究[J].煤炭学报,2015(7):1692-1696.
[5]吴付祥.基于流量闭环控制的粉尘采样器设计[J].工况自动化,2015(7):22-27.
[6]WILLIAM A G.Introduction to random processe with applications to signal and systems[M].[s.n.]:Mclgra.w-Hi.ll.1990:256-259.
[7]GLENN K F.Radiation detection and measurement[M].[s.n.]:Wiley John&Sons,1979.
[8]刘文清.大气中可吸入粉尘(PM10)β射线法测量的理论与数据处理[J].量子电子学报,2001(2):75-81.
[2]唐守强.基于CFD的旋风分离器性能参数影响研究[D].山东:山东理工大学,2015.
[3]蔡刚.环境空气中的PM2.5测定方法[J].甘肃科技,2012,28(12):45-47.
[4]惠立锋.基于RSM的呼吸性粉尘旋风分离器分离效能数值模拟研究[J].煤炭学报,2015(7):1692-1696.
[5]吴付祥.基于流量闭环控制的粉尘采样器设计[J].工况自动化,2015(7):22-27.
[6]WILLIAM A G.Introduction to random processe with applications to signal and systems[M].[s.n.]:Mclgra.w-Hi.ll.1990:256-259.
[7]GLENN K F.Radiation detection and measurement[M].[s.n.]:Wiley John&Sons,1979.
[8]刘文清.大气中可吸入粉尘(PM10)β射线法测量的理论与数据处理[J].量子电子学报,2001(2):75-81.