文档介绍：阻容法便携式烟气水分仪
测量烟气湿度准确性的探讨
钱斌
( 江苏省环境监测中心,江苏南京210013)
摘要:通过用国标方法(干湿球法和重量法)与阻容法现场同步测量各种工况条件下烟气含湿量(湿度) ,并对各种工况条件下所测数据进行对比分析,监测结果分析表明,阻容法便携式烟气水分仪能克服烟道内烟气高温、髙湿等复杂的工况,实现对固定污染源排气中含湿量现场稳定可靠的测量。
关键词:烟气含湿量; 干湿球法; 重量法; 阻容法
RC Act portable flue gas moisture analyzer To investigate the accuracy of the measurement of flue gas humidity
Qianbin
(Environment Monitoring Central Station of Jiangsu Province,Nanjing 210013,China;)
Abstract: By using the national standard method (wet and dry bulb method and gravimetric method) and RC-site simultaneous measurement method under various conditions of flue gas moisture content (humidity), and the conditions under various conditions pare the measured data analysis, monitoring results showed that the RC method can e the portable flue gas moisture meter in the flue gas temperature, humidity and other plex conditions, to achieve a stable and reliable measurement of moisture content in the exhaust gas from stationary sources on site.
Keywords: flue gas moisture content; Wet and Dry Bulb Method; gravimetric method; resistive and capacitive method
前言:
烟气中污染物的浓度是指在标准状态下干烟气中该物质的含量,所以在固定污染源排气监测工作中,烟气含湿量作为一项重要的烟气参数
是一必测因子,其准确性与否将直接影响排放总量或污染物浓度的计算。本文通过在高温高湿条件下用重量法与阻容法现场同步测量烟气含湿量(湿度) ,在非在高温高湿条件下用干湿球法与阻容法现场同步测量烟气含湿量(湿度),并对所测数据进行对比分析,探讨阻容法在固定污染源排气中含湿量测量的准确性。
1、试验
方法原理
干湿球法
污染源领域所用干湿球法通常采用2支完全相同的热电偶作为感温元件,分别测量干球温度和湿球温度。干球温度的感温元件处于烟气气流主体中,湿球温度的