Optimization and reconstruction technology of SCR flue gas denitrification ultra low emission in coal fired power plant
Optimization and reconstruction technology of SCR flue gas denitrification ultra low emission in coal fired power plant
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DOI：
10.1088/1757-899x/231/1/012111
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发表时间：
2017-09
期刊：
影响因子：
--
通讯作者：
Xinhao Li
中科院分区：
文献类型：
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作者：
Xinhao Li
近几十年来，我国火电厂氮氧化物（NOx）排放量逐年增加。氮氧化物（NOx）的大量排放所引起的日益严重的环境问题已受到人们的广泛重视。SCR脱硝技术具有清洁、高效的优点。目前，该技术以其脱硝效率高、运行可靠、无副产物、装置结构简单等优点成为控制NOx排放的主要技术。脱氮效率可稳定在70%左右。本文对三种不同的脱氮方法进行了比较。详细讨论了影响脱氮效率的因素、脱氮系统的系统布置及脱氮系统的关键因素。并综述了如何利用该计算软件对SCR反应器的烟道、挡板、反应器、喷氨格栅和喷氨器、混合器等进行数值模拟，以及系统运行控制对脱氧性能的影响。
In recent decades, nitrogen oxides (NOx) emissions from thermal power plant increased year by year in China. A large number of nitrogen oxides (NOx) emissions caused by the growing environmental problems have been widely attached importance to people. SCR denitrification technology has the advantages of cleanliness and high efficiency. At present, it has been the major technology to control NOx emission because of its high denitrification efficiency, reliable operation, no by-products and simple structure of the device. The denitrification efficiency can be stabilized at 70%. In this paper, three different denitrification methods are compared. The factors influencing the denitrification efficiency, the system arrangement and the key factors of the denitrification system are discussed in detail. And the numerical simulation of how to use this calculation software in the SCR reactor flue, baffle, reactor, spray ammonia grille and spray ammonia, mixer, etc. are reviewed, as well as the effect of system operation control on the deoxidation performance.