[1]周作明,黎理,魏艳芳.烟气脱氮体系中Fe~Ⅱ(NTA)的氧化分析[J].华侨大学学报(自然科学版),2008,29(1):52-55.[doi:10.11830/ISSN.1000-5013.2008.01.0052]
　ZHOU Zuo-ming,LI Li,WEI Yan-fang.Oxidation of Fe~Ⅱ(NTA) in the Process of NO Removal[J].Journal of Huaqiao University(Natural Science),2008,29(1):52-55.[doi:10.11830/ISSN.1000-5013.2008.01.0052]
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烟气脱氮体系中Fe~Ⅱ(NTA)的氧化分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第29卷
期数:
2008年第1期
页码:
52-55
栏目:
出版日期:
2008-01-20

文章信息/Info

Title:
Oxidation of Fe~Ⅱ(NTA) in the Process of NO Removal
文章编号:
1000-5013(2008)01-0052-04
作者:
周作明; 黎理; 魏艳芳
华侨大学材料科学与工程学院; 华侨大学材料科学与工程学院 福建泉州362021; 福建泉州362021
Author(s):
ZHOU Zuo-ming;  LI Li;  WEI Yan-fang
College of Material Science and Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
FeⅡ(NTA);  烟气脱氮;  络合吸收;  氧化动力学
Keywords:
FeⅡ(NTA);  metal chelate absorption;  NO removal from flue gas;  oxidation Kinetics
分类号:
X701
DOI:
10.11830/ISSN.1000-5013.2008.01.0052
文献标志码:
A
摘要:
在填料吸收塔中,考察O2的体积分数、温度和pH值等对FeⅡ(NTA)氧化的影响,并与FeⅡ(EDTA)的氧化进行比较.结果表明,在实验考察的FeⅡ(NTA)浓度范围(0~10 mmol.L-1),氧化过程对FeⅡ(NTA)浓度和O2的体积分数均为一级反应,反应活化能为17.5 kJ.mol-1,小于FeⅡ(EDTA)的氧化活化能,从而使FeⅡ(NTA)的氧化更快,同一条件下的氧化速率常数比FeⅡ(EDTA)的氧化速率常数大10倍以上.当该值小于5时,由于溶液中游离态Fe2+和络合态FeⅡ(NTA)共存,氧化过程中溶液pH值呈先升后降的趋势,而在pH值为6~9时,Fe2+均形成FeⅡ(NTA)络合物,氧化过程中反应液pH值持续下降,但氧化速率随pH值的增加而加快.
Abstract:
The oxidation kinetics of FeⅡ(NTA) by O2 in packed absorption column was investigated.The results showed that the reaction was first order to FeⅡ(NTA) concentration and oxygen concentration respectively.The effect of temperature followed arrhenius equation and the activation energy was 17.5 kJ·mol(-1),lower than that of FeⅡ(EDTA) oxidation,which caused the faster oxidation of FeⅡ(NTA).Oxidation reaction rate increased with the increasing of pH and amount of absorption solution.The chelating complex of Fe(2+) and NTA was dependence in solution pH value,which caused the solution pH elevation at first,and than fallen down in FeⅡ(NTA) oxidation with an initial pH lower than 5,while the solution pH decreased continually in the oxidation process with an initial pH from 6 to 9.

参考文献/References:

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相似文献/References:

[1]荆国华,黎理,唐双益.Fe~Ⅱ(EDTA)溶液吸收NO的工艺参数影响[J].华侨大学学报(自然科学版),2007,28(2):166.[doi:10.3969/j.issn.1000-5013.2007.02.015]
　JING Guo-hua,LI Li,TANG Shuang-yi.Absorption Capacity and Absorption Velocity of Nitric Oxide by Fe~Ⅱ(EDTA) Solution[J].Journal of Huaqiao University(Natural Science),2007,28(1):166.[doi:10.3969/j.issn.1000-5013.2007.02.015]

备注/Memo

备注/Memo:
国家自然科学基金资助项目(20706022); 福建省自然科学基金资助项目(D0610013); 福建省青年科技人才创新项目(2005J027); 国务院侨办科研基金资助项目(06QZR09)
更新日期/Last Update: 2014-03-23