摘要
本文探讨了臭氧氧化法脱除硫化氢,构建了详细的臭氧氧化硫化氢的反应机理,包含24个物种和74个基元反应.通过臭氧热分解和臭氧低温氧化硫化氢的实验结果进一步验证了本反应机理的可靠性.实验发现,在温度为25℃,物质的量之比为3时,硫化氢的脱除效率达到93%.由模拟结果看出,在停留时间为2s,物质的量之比为1时,氧化最佳温度为150℃—200℃.反应温度为25℃,物质的量之比为1时,把反应时间延长到20s,H2S的脱除率能达到90.9%.
A new removal technology of hydrogen sulfide by ozone oxidation is investigated. A detailed kinetic model considering 24 species and 74 reactions was constructed for hydrogen sulfide oxidation by ozone. The agreement between the results predicted by the model and the experimental data is satisfactory. The model provides better insight into the oxidation process. The experimental results show that H2 S oxidization efficiency is about 93% at 25℃ and [ O3 ] 0/ [ H2 S ] 0 = 3. The simulated results show that the optimum temperature is 150℃-200℃ at [ O3 ]0/[ H2S]0 = 1 in 2s, and the H2S oxidization efficiency is 90. 9% at 25℃ and [ O3 ]0/ [H2S]0 =1 in 20s.
出处
《环境化学》
CAS
CSCD
北大核心
2009年第5期744-746,共3页
Environmental Chemistry
基金
国家自然科学基金资助项目(No.50476059)
国家重点基础研究发展规划973资助项目(No.2006CB200303)
国家杰出青年科学基金资助项目(No.50525620)
关键词
臭氧
硫化氢
反应机理
氧化.
ozone, hydrogen sulfide, reaction mechanism, oxidation
