分解炉RDF与煤多级燃烧N的迁移转化及NOx控制研究

项目名称： 分解炉RDF与煤多级燃烧N的迁移转化及NOx控制研究

项目编号： No.51502221

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 梅书霞

作者单位： 武汉理工大学

项目金额： 20万元

中文摘要： 针对分解炉中处置垃圾衍生燃料（RDF）与煤粉分级燃烧减排NOx相结合的关键技术需要，提出RDF与煤粉多级燃烧时N的迁移转化机理及NOx减排控制研究。通过对影响挥发份-N和焦炭—N向NO或者N2转化的因素进行分析，获得阻止NOx生成及诱导N2选择性转化的控制机制，掌握控制“燃料型NOx”生成的途径；通过研究分解炉环境因素在挥发份和焦炭对“输入型NOx”进行还原转化过程中的影响规律，获悉促进“输入型NOx”被还原的途径；通过悬浮炉燃烧实验探究RDF与煤粉多级燃烧NOx的生成及控制规律；通过数值模拟，综合分析“燃料型NOx”与“输入型NOx”的交互生成与转化机理及受环境因素的影响规律，最终揭示分解炉内RDF与煤粉多级燃烧NOx的生成机理及控制方法。项目的研究将补充分解炉环境下RDF/煤粉共燃时NOx的生成和转化机理，而且在实践中将对实现分解炉中RDF与煤粉多级燃烧减排NOx提供重要的理论依据。

中文关键词： 分解炉；NOx控制；N迁移；RDF；煤燃烧

英文摘要： On the background of utilizing refuse derived fuel and using staged coal combustion in precalciner of cement industry, The migration and transformation mechanism of N and control methods of nitrogen oxides will be studied. By analyzing the factors affecting volatile -N and coke -N to NO or N2 transformation, the control mechanisms preventing fuel-NOx formation and inducing selective conversion of N2 will be obtained. By studying the influence on the transformation process of volatiles and char on the input type NOx of environmental factors in precalciner, the way to promote input type NOx being restored will be informed. By using multistage combustion of RDF and pulverized coal in the suspending furnace the formation and control law of NOx will be explored.The interactive generation and transformation mechanism within imported NOx, fuel type NOx and heat-type NOx will be analysed out by numerical simulations of multistage combustion of RDF and coal in precalciner, ultimately revealing the reaction mechanism and reduction control of nitrogen oxides by using multistage combustion of RDF and coal in precalciner. The research will not only complement the mechanism of NOx formation and transformation with co-combustion of RDF and coal in precalciner, but also provide important theoretical basis for the NOx reduction control in cement industry by using multistage combustion of RDF and coal in precalciner.

英文关键词： precalciner;control of nitrogen oxides;N migration;refuse derived fuel;coal combustion