东北电力技术2025，Vol.46Issue(2)：47-53,7.
深调负荷下烟气再循环对NOx和SO2影响及SNCR优化调整模拟分析
Simulation Analysis of Flue Gas Recirculation Impact on NOx and SO2 Production Under Deep Load Adjustment and SNCR Optimization Adjustment
李帅 1曾乐 2孟月 2蒲建业 2周闯2
作者信息
- 1. 大连泰山热电有限公司,辽宁 大连 116033
- 2. 中电投东北能源科技有限公司,辽宁 沈阳 110179
- 折叠
摘要
Abstract
In order to solve the problems of poor operational stability and high nitrogen oxide emission concentration of circulating flui-dized bedboilers under low load conditions,it conducts the experimental research on the influence of recycled flue gas on various im-portant indicators of boiler operation.The results show that increasing the flue gas recirculation rate to a certain extent can promote uniform temperature distribution in the furnace,improve the uniformity and stability of combustion in the furnace,dilute oxygen con-centration,strengthen the reducing atmosphere.For the comprehensive analysis of flue gas recirculation technology,it starts from the combustion stability,operation reliability and environmental protection of coal-fired boiler in the process of low load,through compa-ring and analysing a 440 t/h circulating fluidized bed coal boiler in a coal-fired power plant.Under different flue gas recirculation rates,NO production concentration,SO2 production concentration,furnace temperature and flue gas recirculation rate of 20%the par-ticle distributionin furnace,trajectory and furnace pressure.It explores the influence law of flue gas recirculation on boiler operation indexes,and achieves the optimal removal effect of nitrogen oxides by combining SNCR system optimization and adjustment technolo-gy.The research results provide a reference for the combustion optimization of the same type boiler under low load operation.关键词
循环流化床锅炉/旋风分离器/烟气再循环Key words
circulating fluidized bedboiler/cyclone separator/flue gas recirculation分类
信息技术与安全科学引用本文复制引用
李帅,曾乐,孟月,蒲建业,周闯..深调负荷下烟气再循环对NOx和SO2影响及SNCR优化调整模拟分析[J].东北电力技术,2025,46(2):47-53,7.
