Fe~Ⅱ(EDTA)^(2-)溶液吸收NO气体的传质-反应过程  

Mass Transfer-Reaction Process of NO Gas Absorbed by Fe~Ⅱ(EDTA)^(2-) Solution

作　　者：王菲[1] 刘有智[1] 袁志国[1] 祁贵生[1] 焦纬洲[1] 

机构地区：[1]中北大学山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《含能材料》2015年第3期285-290,共6页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(21376229);国防火炸药青年基金(HZY06020301-11)

摘　　要：湿式氧化法在处理火炸药生产过程中产生的氮氧化物(NOx)废气时存在难以快速氧化吸收NO的问题,导致NOx吸收效率较低。为解决此问题,在鼓泡反应器中,采用亚铁络合物FeⅡ(EDTA)2-作为吸收剂吸收NO气体,通过考察吸收液浓度、NO气体浓度等对吸收速率的影响,分析了NO吸收的传质-反应过程,并且推导了NO吸收过程的理论模型。结果表明:在实验考察范围内,NO吸收速率随NO浓度升高呈线性升高,FeⅡ(EDTA)2-吸收NO是一个拟一级快速反应过程。吸收过程模型计算值与实验值的误差小于5%,两者的一致性较好,可以用来描述NO吸收的传质-反应过程。NO is difficult to be rapidly oxidized and absorbed in the wet oxidation method used in the treatment of the NOxexhaust gases produced in the production process of propellants and explosives,which cause the low absorption rate.To solve this problem,ferrous complex Fe^Ⅱ（EDTA）2-（Ethylene Diamine Tetraacetic Acid,EDTA）was used as the absorbent of NO in a bubbling reactor.The effects of absorbing solution concentration and NO gas concentration on the absorption rate were investigated.The mass transfer-reaction process of NO absorption was analyzed.The theoretical model describing the NO absorption process was derived.Results show that：under experimental conditions,the absorption rate increases linearly with the increase of NO concentration,and the NO absorbed by Fe^Ⅱ（EDTA）2-is a pseudo first-order reaction process.The error between calculated values obtained by absorption process model and experimental ones is within5%,both have good consistency,which can be used to describe the mass transfer-reaction process of NO absorbed by Fe^Ⅱ（EDTA）2-solution.

关 键 词：NO Fe^Ⅱ(EDTA)^2- 传质-反应过程 鼓泡反应器 

分 类 号：X789[环境科学与工程—环境工程]