高温红外烟气检测仪原理及其在钢铁行业中的应用

PRINCIPLE OF A HIGH-TEMPERATURE GAS ANALYZER BASED ON INFRARED SPECTROSCOPY AND ITS APPLICATION IN IRON AND STEEL INDUSTRY

随着中国对环境治理力度的不断加大,针对燃煤电厂、钢厂、水泥厂等的超低排放要求也日益严格规范。准确监测超低排放烟气中的各项污染物对污染控制设备运行和环境管理尤为重要。选取了适用于钢铁行业复杂烟气环境下的烟气分析仪,分别进行了实验室混合标气条件和某钢铁企业烟气条件下的烟气检测,并选取几种典型烟气分析仪进行比对分析。监测结果的趋势变化与在线监测结果具有较好的对应性,其绝对误差在可接受误差范围内。结果表明:高温红外分析仪具有较好的准确性和现场应用能力,能够满足检测需求。

With the increasing effort of national environmental governance of China,the ultra-low emission requirements of coal-fired power plants,steel mills and cement plants are also increasingly strict.Accurate monitoring of various pollutants in ultra-low emission flue gas is particularly important for the operation of pollution control equipment and environmental management.Therefore,in order to meet the need for accurate analysis of flue gas in the iron and steel industry,this paper introduced the principle and application of a high-temperature infrared flue gas detector,9100HIR.And the comparative test of the instrument and some typical flue gas analyzers in a steel enterprise were conducted.The trend changes of the monitoring results had good correspondence with the online monitoring result,and the absolute error was within the acceptable error range.The comparison results of various analysis methods showed that the 9100HIR analyzer had good accuracy and field application ability,and could meet the detection requirements.