乙醇胺对介质阻挡耦合电晕放电同时脱除NO、SO2的影响

doi:10.16085/j.issn.1000-6613.2020-0116

化工进展 ›› 2020, Vol. 39 ›› Issue (11): 4685-4692.DOI: 10.16085/j.issn.1000-6613.2020-0116

乙醇胺对介质阻挡耦合电晕放电同时脱除NO、SO₂的影响

刘露(), 骆嘉钦, 阚青, 马晓迅()

西北大学化工学院，国家碳氢资源清洁利用国际科技合作基地，陕北能源先进化工利用技术教育部工程研究中心，陕西省洁净煤转化工程技术研究中心，陕北能源化工产业发展协同创新中心，陕西西安 710069

出版日期:2020-11-05 发布日期:2020-11-06
通讯作者: 马晓迅
作者简介:刘露（1994—），女，硕士研究生。E-mail：1102214458@qq.com。
基金资助:
国家自然科学基金(21536009);陕西省科技计划(2017ZDCXL-GY-10-03)

Effect of ethanolamine on the simultaneous removal of NO and SO₂ by dielectric barrier coupled corona discharge

Lu LIU(), Jiaqin LUO, Qing KAN, Xiaoxun MA()

School of Chemical Engineering, Northwest University, International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advance Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi, Xi’an 710069, Shaanxi, China

Online:2020-11-05 Published:2020-11-06
Contact: Xiaoxun MA

摘要/Abstract

摘要：

采用自行设计的介质阻挡耦合电晕放电等离子体反应装置进行了模拟烟气同时脱硫脱硝的研究，分别考察乙醇胺（HOCH₂CH₂NH₂，MEA）在不同模拟烟气体系中对NO、SO₂脱除的影响，深入探讨了MEA在放电过程中与NO的作用机理。结果表明：在N₂/O₂/SO₂/NO体系中，0.56% MEA的加入可以显著消除O₂对NO脱除的抑制作用；在N₂/CO₂/SO₂/NO体系中，MEA会吸收进入体系中的部分CO₂，以减弱CO₂对NO脱除的抑制；在N₂/O₂/CO₂/H₂O/NO/SO₂体系中，0.56% MEA的加入既可以有效减弱H₂O的影响，也可以使NO的脱除率达到71.28%，继续将MEA的体积分数增大至1.20%时，可将该体系下NO脱除率提高到81.25%；同时，MEA可以在短时间内高效吸收体系内的SO₂，且几乎不受其他气体成分的影响，SO₂脱除率保持在95%左右。

关键词: 介质阻挡-电晕放电, 脱硫脱硝, 乙醇胺（MEA）, 吸收, 脱除率

Abstract:

The self-designed dielectric barrier coupled corona discharge plasma reactor was used to study the simultaneous desulfurization and denitrification of simulated flue gas. The effects of ethanolamine on the removal of NO and SO₂ in different simulated flue gas systems were investigated, and the interaction mechanism between ethanolamine and NO in the discharge process was discussed. The results showed that the addition of 0.56% ethanolamine into the N₂/O₂/SO₂/NO system can significantly eliminate the inhibition effect of O₂ on the removal of NO while in the N₂/CO₂/SO₂/NO system, ethanolamine would absorb part of CO₂ and hence weaken the inhibition effect of CO₂ on the NO removal. As for the N₂/O₂/CO₂/H₂O/NO/SO₂ system, the addition of 0.56% ethanolamine can not only effectively reduce the influence of H₂O, but also prompt the removal rate to 71.28%. When the volume fraction of ethanolamine was increased to 1.20%, the NO removal rate increased to 81.25%. At the same time, ethanolamine can effectively absorb the SO₂ in the system in a short time, which was almost unaffected by other gas components with a SO₂ removal rate of 95%.

Key words: dielectric barrier corona discharge, desulfurization and denitrification, ethanolamine(MEA), absorption, removal

中图分类号:

X511

刘露, 骆嘉钦, 阚青, 马晓迅. 乙醇胺对介质阻挡耦合电晕放电同时脱除NO、SO₂的影响[J]. 化工进展, 2020, 39(11): 4685-4692.

Lu LIU, Jiaqin LUO, Qing KAN, Xiaoxun MA. Effect of ethanolamine on the simultaneous removal of NO and SO₂ by dielectric barrier coupled corona discharge[J]. Chemical Industry and Engineering Progress, 2020, 39(11): 4685-4692.

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乙醇胺对介质阻挡耦合电晕放电同时脱除NO、SO₂的影响

Effect of ethanolamine on the simultaneous removal of NO and SO₂ by dielectric barrier coupled corona discharge

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