摘要
采用臭氧定量氧化NO,并结合湿法吸收进行脱硫脱硝实验研究。吸收实验选取3种常见碱性吸收液,采用鼓泡法进行NO_x脱除效果对比,最终选定0.05 mol·L^(-1)的Ca(OH)_2乳浊液为吸收液。考察了NO和NO_2不同配比下的吸收效果,当氧化度为60%(NO_2/NO物质的量比1.3)时,吸收效果最佳。臭氧氧化实验结果表明,O_3/NO物质的量比为0.6时能达到最佳氧化度,碱液吸收NO_x脱除效率能达到76%,SO_2脱除效率达100%。当改进鼓泡方式后,最佳氧化度条件下NO_x脱除效率提高到85%。碱液pH对该法脱硝效率有影响,SO_2的存在对NO_x的脱除有一定促进作用。
NO was quantitatively oxidized by ozone. NOx and SO2 were simultaneous absorbed with solution. Absorption test chose 3 common alkaline liquor to screen removal efficiency of NOx with bubbling. Finally 0.05 mol · L - 1 Ca （OH） 2 emulsion was chosen to use. Analysis of absorption performance by finding best ratio of NO2 to NO showed the best oxidizability is 60%. Oxidation experiment comes to the best oxidizability when ratio of 03 to NO is 0.6, And removal efficiency of NO reached 76% raised to 85% with the best oxidizability when bubble more SO2 plays a role in helping NOx absorption. , SO2 reached 100%. Removal efficiency of NOx fine. pH has an impact on removal efficiency and
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第6期3570-3576,共7页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(U1660109)
首都蓝天行动培育专项课题(Z141100001014006)
中央高校基本科研业务费专项资金(FRF-TP-14-007C1)
关键词
臭氧
氧化度
吸收
同时脱硫脱硝
ozone
oxidizability
absorption
simultaneous removal of NOx and SO2
