[1]耿皎,王晓旭,袁刚,等.水和稀硝酸吸收NO2的研究[J].南京理工大学学报(自然科学版),2013,37(01):164.
 Geng Jiao,Wang Xiaoxu,Yuan Gang,et al.Investigation of NO2absorption in water or dilute nitric acid[J].Journal of Nanjing University of Science and Technology,2013,37(01):164.
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水和稀硝酸吸收NO2的研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年01期
页码:
164
栏目:
出版日期:
2013-02-28

文章信息/Info

Title:
Investigation of NO2absorption in water or dilute nitric acid
作者:
耿皎12王晓旭1袁刚1张锋1张志炳12
1.南京大学 化学化工学院,江苏 南京 210093;2.国家有机毒物控制与资源化工程技术研究中心,江苏 南京 210093
Author(s):
Geng Jiao12Wang Xiaoxu1Yuan Gang1Zhang Feng1Zhang Zhibing12
1.School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China; 2.National Organic Poison Control and Resource Engineering Technology Research Center, Nanjing 210093,China
关键词:
二氧化氮吸收硝酸吸收机理资源化
Keywords:
NO2absorptionnitric acidabsorption mechanismresourceful treatment
分类号:
TQ021.4
摘要:
基于NOx气体的资源化处理考虑,研究了水和不同浓度的稀硝酸对NO2的吸收性能,考察了吸收剂用量、稀硝酸的浓度(3%~30%)以及气相压力对NO2吸收效果的影响。结果表明,增加吸收剂用量、硝酸浓度和气相压力均能提高NO2的吸收效率,其中稀硝酸用量对吸收效率的影响特别显著。水吸收NO2是化学吸收与物理吸收并存的复杂过程,气液两相中存在溶质(NO2、N2O4等)和生成物(HNO2、HNO3等)的物理扩散和化学反应。该文分析了各种吸收条件下吸收液中亚硝酸和硝酸的浓度组成关系,讨论了吸收前后气相中NO2、N2O4的组成变化,证明了NO2在水中的吸收是以N2O4与水的化学反应为主。
Abstract:
For resourceful treatment of NOx waste gases,the performance of NO2 absorption in water or dilute nitric acid is investigated to explore the influence of the absorbent amount,nitric acid concentration(3%~30%)and absorption pressure.It is found that the increase in absorbent amount,nitric acid concentration and absorption pressure all lead to the higher absorption efficiency.Absorption of NO2 in water includes chemical and physical absorption processes,furthermore,physical diffusion and chemical reaction exist in both gas and liquid phases.In the present work,the composition of HNO2 and HNO3 in the absorption solution is analyzed and the variations in the concentration of NO2 and N2O4 in gas phase are compared before and after the absorption.It is proved that the absorption occurs mainly with the chemical reaction of N2O4 and water.

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金(20906046);江苏省自然科学基金(BK2009043);江苏省环保科研课题(2012017)
作者简介:耿皎(1975-),男,博士,副教授,主要研究方向:绿色化工过程,Email:gengjiao@nju.edu.cn。
更新日期/Last Update: 2013-02-15