摘要
二氧化硫和氮氧化物造成的大气污染问题关系到国民经济发展,尤其可持续发展,但目前普通吸收剂只具有单一脱除功能,不仅工艺繁琐,而且效率不高。文中采用高分子过氧酸对普通钙基吸收剂进行改性,使其在脱硫同时具有脱硝性能。与低分子双氧水相比,高分子过氧酸添加剂化学稳定性高,而且减少了爆炸等安全隐患。利用高分子过氧酸改性的钙基吸收剂进行烟气流化床同时脱硫脱硝实验研究,探讨了添加剂含量、反应温度、烟气湿度以及SO2和NOx浓度等各种因素对脱硫脱硝效率的影响,并确定了最佳工艺条件。该方法拓展了烟气净化技术的研究领域,丰富了脱硫脱硝工艺研究内容,与传统工艺相比,具有很好的应用前景。
The problem of air pollution caused by sulfur dioxide and nitrogen oxides relates to the development of the national economy,especially sustainable development.Ordinary absorbent only has a single removal function,not only tedious process,but the efficiency is not high.In this work,a polymer-supported peroxyacid was introduced to modify the common calcium-based sorbent,making it has both desulfurization and denitrification performances.Compared with low-molecular hydrogen peroxide,it has higher chemical stability,reducing the explosion and other safety hazards.Experimental studies were implemented for simultaneous desulfurization and denitrification from flue gas in a fluidized bed by the peroxyacids polymer-modified calcium-based sorbents.Various influencing factors,such as the content of additive,reaction temperature,the humidity of flue gas,SO2 and NOxinlet concentration et al,on the removal efficiencies of SO2 and NOx were investigated,and the optimal experimental conditions were determined.The new method extends current knowledge in the area of flue gas purification,and enriches the research content of desulfurization and denitrification.In comparison with traditional absorbents,it has shown favorable development prospects.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第35期31-36,共6页
Proceedings of the CSEE
基金
国家科技支撑计划项目(2011BAI02B03)
国家自然科学基金项目(10974053)~~
关键词
高分子过氧酸
添加剂
脱硫
脱硝
流化床
polymer-supported peroxyacid
additive
de-sulfurization
denitrification
fluidized bed
