Study on denitrification using ClO2 based on hydrodynamic cavitation strengthening

被引：0

作者：

Song L. ^{[1
]}

Yang J. ^{[1
]}

Yu S. ^{[1
]}

Pan X. ^{[1
,2
]}

机构：

[1] Marine Engineering College, Dalian Maritime University, Dalian, 116026, Liaoning

[2] School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, 524088, Guangdong

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2019年 / 47卷 / 10期

关键词：

Air pollution; Chlorine dioxide; Denitrification; Hydrodynamic cavitation; Ship;

D O I：

10.13245/j.hust.191003

中图分类号：

学科分类号：

摘要：

To improve the efficiency of wet oxidation method denitration, a hydrodynamic cavitation enhanced denitrification method was proposed. Experimental results of hydrodynamic cavitation strengthening chlorine dioxide denitrification show that hydrodynamic cavitation reactor could produce a large number of cavitation bubbles containing a mixture of nitric oxide, and the diameter of a single bubble is about 1/37.4 of that generated by the bubbling denitration experiment. Large amount of cavitation bubbles greatly expands the gas-liquid contact area. Using chlorine dioxide with a mass fraction of 1.0×10-6, the duration for denitrification rate over 90% is 90 s for hydrodynamic cavitation reactor, while for the bubbling reactor is 0 s. Increasing the mass fraction of chlorine dioxide could prolong the duration of efficient denitrification, but lead to more nitrogen dioxide production and lower denitrification rate meanwhile. The proposed method dramatically improves the efficiency of wet denitration. © 2019, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：12 / 16

页数：4

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