燃煤电厂SCR脱硝系统建模技术研究综述

Overview of modeling technology for SCR denitrification system in coal-fired power plants

火力发电承担着电网调峰调频的重要任务,在很长一段时间内仍将是我国能源供应的重要手段。我国的火力发电燃料以煤炭为主,煤炭燃烧会产生NOx,直接排入大气会对自然环境产生危害。因此,燃煤机组配有烟气脱硝系统,而准确获取NOx的生成量是脱硝系统控制的关键,目前电厂常采用抽取式测量方法,测量结果存在滞后。近年来,关于SCR脱硝系统建模的技术发展已较为成熟,也有许多相关研究资料,但目前关于SCR脱硝系统建模技术综述性介绍的资料还很少,为此对SCR脱硝系统建模技术进行了总结汇总。

Thermal power generation undertakes the important task of peak shaving and frequency regulation in the power grid,and this power generation method will continue to be an important means of energy supply in China for a long time.Coal is the main fuel for thermal power generation in China,and coal combustion will produce NOx,which will directly discharge into the atmosphere and cause harm to the natural environment.Therefore,coal-fired units are equipped with flue gas denitrification systems,and accurately obtaining the amount of NOx generated is the key to controlling the denitrification system.Currently,power plants often use extraction measurement methods,which may result in lagging measurement results;In recent years,the development of modeling technology for SCR denitrification systems has become relatively mature,and there are also many related research materials.However,there is currently very little information on the comprehensive introduction of modeling technology for SCR denitrification systems.Therefore,the author has summarized and summarized the modeling technology for SCR denitrification systems.