摘要
Abstract
In recent years,with the increasingly serious situation of air pollution,the research of control technology of NOxemission in coal-fired flue gas is particularly critical.Wet denitrification with Fe(Ⅱ)EDTA has been widely researched due to the fast absorption rate,large complex capacity and good capacity of wet desulfurization,but Fe(Ⅱ)EDTA can be easily oxidized by oxygen to Fe(Ⅲ)EDTA,losing the complexing ability to NO.Therefore,in order to improve the denitrification efficiency of Fe(Ⅱ)EDTA,it is necessary for Fe(Ⅱ)EDTA regeneration.In this paper,the research progress of the regeneration technology Fe(Ⅱ)EDTA was presented.The principles and properties of the regeneration with sulfur compounds,metal powder,urea,organic compound,catalyst,and microorganism were respectively explained.Then their own advantages and shortcomings were elaborated and the industrialization with these regeneration technologies were analysed.Finally,it is pointed out that microbial regeneration of Fe(Ⅱ)EDTA is a promising regeneration technique.Studying Fe(Ⅱ)EDTA regeneration with aerobic bacteria,exploring the equipment of microbial Fe(Ⅱ)EDTA regeneration,and developing an efficient absorption process integrated microbial regeneration of Fe(Ⅱ)EDTA,is the future direction of Fe(Ⅱ)EDTA regeneration.关键词
乙二胺四乙酸铁络合物/湿法脱硝/再生/烟道气/吸收/工业化Key words
Fe(Ⅱ)EDTA/wet denitrification/regeneration/flue gas/absorption/industrialization分类
资源环境
