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投稿时间：2021-04-08 修订日期：2021-04-13 录用日期：2021-04-14 网络发布日期：2021-08-27
投稿时间：2021-04-08 修订日期：2021-04-13 录用日期：2021-04-14 网络发布日期：2021-08-27
中文摘要: 研究了20 kHz超声波存在的条件下氧气-水气液两相传质系数及溶解氧。采用电化学法测量溶液的溶解氧。通过试验数据计算出有超声波和没有超声波条件下氧气-水气液两相体积传质系数。考察不同温度和不同超声功率条件下超声波对氧气-水气液两相传质系数及水中溶解氧的影响。结果表明，超声波能促进气液传质，超声波的存在会使氧气-水气液两相体积传质系数从0.004 4 s-1增大到0.005 5~0.006 9 s-1，超声波降低了水的溶解氧平衡浓度，超声波的存在会使水中的表观溶解氧浓度降低10%~20%。
Abstract:Volume mass transfer coefficient of oxygen-water gas-liquid two-phase and dissolved oxygen in water was studied in presence of a 20 kHz ultrasonic. Dissolved oxygen of solution was measured by electrochemical method. Volume mass transfer coefficients of oxygen-water gas-liquid two-phase in water with or without ultrasonic were calculated from experimental data. Effects of ultrasonic on volume mass transfer coefficient of oxygen-water gas-liquid two-phase and dissolved oxygen in water were investigated at different temperatures and different ultrasonic power. The results show that ultrasonic promotes gas-liquid mass transfer and presence of ultrasonic rises volume mass transfer coefficient of oxygen-water gas-liquid two-phase from 0.004 4 s-1 to 0.005 5—0.006 9 s-1. Besides, ultrasonic changes equilibrium concentration of dissolved oxygen in water. Presence of ultrasonic reduces apparent dissolved oxygen concentration in water by 10%—20%.
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基金项目:国家自然科学基金资助项目（U1702252）
| 作者 | 单位 | |
| 舒子刚 | 东北大学 冶金学院 | SZG96416@163.com |
| 畅永锋* | 东北大学 冶金学院 | changyf@smm.neu.edu.cn |
| 王伟 | 东北大学 冶金学院 | |
| 谢锋 | 东北大学 冶金学院 | |
| 张利波 | 昆明理工大学 冶金与能源工程学院 |
引用文本：
舒子刚,畅永锋,王伟,谢锋,张利波.超声波对氧气-水气液两相传质及表观溶解氧的影响[J].有色金属（冶炼部分）,2021(9):26-31.
SHU Zi-gang,CHANG Yong-feng,WANG Wei,XIE Feng,ZHANG Li-bo.Effect of Ultrasonic on Mass Transfer of Oxygen-Water Gas-Liquid Two-Phase and Apparent Dissolved Oxygen[J].Nonferrous Metals (Extractive Metallurgy),2021(9):26-31.
舒子刚,畅永锋,王伟,谢锋,张利波.超声波对氧气-水气液两相传质及表观溶解氧的影响[J].有色金属（冶炼部分）,2021(9):26-31.
SHU Zi-gang,CHANG Yong-feng,WANG Wei,XIE Feng,ZHANG Li-bo.Effect of Ultrasonic on Mass Transfer of Oxygen-Water Gas-Liquid Two-Phase and Apparent Dissolved Oxygen[J].Nonferrous Metals (Extractive Metallurgy),2021(9):26-31.
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