摘要
运用计算流体动力学模拟软件FLUENT对城市生活垃圾焚烧炉在不同工况下进行了选择性非催化还原(selective non-catalytic reduction,SNCR)脱硝系统的数值模拟优化研究。结果表明,下层SNCR喷嘴喷入的还原剂可与烟气进行充分的混合,脱硝效果更好;在还原剂总流量一定的情况下,增加下层SNCR喷嘴流量,有利于SNCR脱硝效率的提高,6∶3∶1的配比使得垃圾焚烧炉脱硝效率达到53.3%;与其他喷射速度相比,原始喷射速度(13.8 m/s)工况的混流效果较好,脱硝率达到51.7%。
This paper uses computational fluid dynamics simulation software FLUENT to study numerical simulation and optimization on selective non-catalytic reduction （SNCR） system in municipal waste incinerators under different working conditions. Results indicate that reductant from the lower SNCR injection nozzle is fully mixed with flue gas which means better denitration effect, in the case of constant total flow of reductant, an increase of flow in the lower SNCR injection nozzle is useful to improve SNCR denitration efficiency and matching of 6： 3 ： 1 makes denitration efficiency of the waste incinerator reach 53.3%. In addition, compared to other ejection velocity, mixed flow effect of the original ejection velocity condition is better and denitration efficiency is 51.7%.
作者
陈志刚
黄巧贤
杨波
李茂东
黄国家
曹丽英
CHEN Zhigang HUANG Qiaoxian YANG Bo LI Maodong HUANG Guojia CAO Liying(Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou, Guangdong 510100, China)
出处
《广东电力》
2016年第11期12-17,共6页
Guangdong Electric Power
基金
国家质量监督检验检疫总局科技计划项目(2015QK268)
广州市科技计划项目(201604020022)
关键词
垃圾焚烧炉
选择性非催化还原
优化
waste incinerator
selective non-catalytic reduction
optimization
