中国电力2017，Vol.50Issue(7)：79-84,6.DOI:10.11930/j.issn.1004-9649.2017.07.079.06
峰谷形燃烧对炉内燃烧特性影响的数值模拟
Numerical Simulation on Effects of Peak-Valley Combustion Mode on Furnace Combustion Characteristics
吕洪坤 1童家麟 1张明 1熊建国 1应明良 1齐晓娟 1余斌1
作者信息
- 1. 国网浙江省电力公司电力科学研究院,浙江杭州 310014
- 折叠
摘要
Abstract
In order to better reduce the NOx emission of coal-fired boilers,it is necessary to optimize the conventional low NOx combustion mode.The numerical simulation method is employed for an ultra-supercritical boiler with low NOx combustion technology.The impacts of the peak-valley combustion mode on the temperature,the concentration field,the burnout rate and the slag volume are studied and compared with the conventional low NOx combustion mode.The simulation and analysis results indicate that while keeping the excess air ratio of both the reduction zone and the burnout zone constant,the peak-valley combustion mode outperforms the conventional low-NOx combustion mode in low NOx combustion and has little effect on the combustion,the gas temperature,the bottom slag volume and the burnout rate.Under an optimal condition,the NOx concentration in furnace exit cross section is reduced by 12％.关键词
峰谷形燃烧/常规低NOx燃烧/NOx排放/数值模拟Key words
peak-valley combustion/conventional low NOx combustion/NOx emission/numerical simulation分类
能源科技引用本文复制引用
吕洪坤,童家麟,张明,熊建国,应明良,齐晓娟,余斌..峰谷形燃烧对炉内燃烧特性影响的数值模拟[J].中国电力,2017,50(7):79-84,6.
