摘要
采用臭氧协同半干法研究了垃圾电厂脱酸塔内的臭氧氧化过程,分析了降温过程、臭氧管道和喷嘴布置方式对混合流场的影响,对比了不同布置方案下的氧化效率,并分析了臭氧主管道高度对氧化效率的影响。结果表明:脱酸塔内喷入质量流量为0.2 kg/s的水后可以达到臭氧合适的反应区间,同时塔内温度降幅不大;在臭氧管道布置在上方、喷嘴向下喷入的方式下臭氧在塔内整体分布和流场较好;随着O3/NO质量流量比由1增至3,在管道中央布置方式下氧化效率由38.12%提高到94.31%,在管道贯穿布置方式下氧化效率由38.66%提高到94.72%,氧化效率均逐渐提高,但其增速均逐渐减小;随着臭氧主管道下移,氧化效率有轻微波动,但大部分维持在94%~96%内。
The ozone synergistic semi dry method was used to study the ozone oxidation process in the deacidification tower of a waste power plant.The effects of cooling process,ozone pipeline and nozzle arrangement on the mixed flow field were analyzed,and the oxidation efficiency under different arrangement schemes was compared,so as to analyze the influence of the height of the ozone main pipeline on the oxidation efficiency.Results show that adding water with mass flow rate of 0.2 kg/s to the deacidification tower can reach a suitable range for ozone reaction,and the temperature drop inside the tower is not significant.The overall distribution and flow field of ozone in the tower are better when the ozone pipeline is arranged above and the nozzle is sprayed downwards.As the O3/NO mass flow ratio increases from 1 to 3,the oxidation efficiency increases from 38.12%to 94.31%in the central layout of the pipeline,and increases from 38.66%to 94.72%in the through layout of the pipeline.The oxidation efficiency gradually increases,but its growth rate gradually decreases.As the ozone main pipeline moves downwards,there is a slight fluctuation in oxidation efficiency,but most of the oxidation efficiency remains within 94%-96%.
作者
李永华
黄涛
LI Yonghua;HUANG Tao(School of Energy,Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2023年第10期1335-1342,共8页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(52072081)。
关键词
臭氧氧化
喷嘴布置
氧化效率
脱酸塔
ozone oxidation
nozzle arrangement
oxidation efficiency
deacidification tower
