摘要
FGD的全称为湿法烟气脱硫，是火力发电厂、化工厂厂用高压蒸汽锅炉等应用最广泛的脱硫装置。烟气流速是环保监测和数据上传环保局采集终端的一个重要参数，涉及与环保部门的排放总量的结算。因为湿法烟气脱硫系统入口烟气温度和流速较高，且含有大量的燃煤灰尘，因此对风量测量装置提出了较高的要求，甚至需要特殊的风量测量装置。而湿法烟气脱硫系统出口烟气中温度虽然较低（一般在48℃-52℃之间），但是因其含有大量的水蒸气和石膏浆液，热导式风量测量装置、文丘里风量测量装置、机翼式风量测量装置、节流差压风量测量装置、超声波风量测量装置等都无法正常使用，因此湿法烟气脱硫系统出口、入口烟气流速测量装置的选型工作是十分重要的工作，错误的选型会导致后续工作极度被动，因此有必要介绍一下相关经验。
FGD,known as wet flue gas desulfurization is a thermal power plant, chemical plant factory with high-pressure steam boiler, the most widely used desulfurization unit. The flue gas flow rate is an important parameter in environmental monitoring and data upload EPA Acquisition Terminal, involved in a settlement with the environmental protection department of the total emissions. Higher because of the wet FGD system inlet flue gas temperature and flow rate, and contain a lot of coal dust, and therefore higher air flow measuring device, or even require special air flow measuring device. Wet flue gas desulfurization system outlet flue gas temperature low （generally between 48 % -52 %）, but because it contains a lot of water vapor and gypsum slurry, the thermal conductivity of air flow measuring device, the Venturi air flow measurement devices, wing type air flow measuring device, throttle differential pressure air flow measuring device, ultrasonic wind measurement devices and so does not work properly, wet flue gas desulfurization system outlet, the inlet flue gas flow rate measuring device selection is very important work, the selection of the wrong will lead to follow-up is extremely passive, it is necessary to introduce the relevant experience.
出处
《山东电力高等专科学校学报》
2012年第3期37-40,共4页
Journal of Shandong Electric Power College
