化工学报 ›› 2023, Vol. 74 ›› Issue (4): 1693-1702.DOI: 10.11949/0438-1157.20221664

• 能源和环境工程 • 上一篇    下一篇

水中超声波脱气的效应研究

王倩倩1(), 刘明言1,2(), 马永丽1   

  1. 1.天津大学化工学院,天津 300350
    2.化学工程联合国家重点实验室(天津大学),天津 300350
  • 收稿日期:2022-12-29 修回日期:2023-03-20 出版日期:2023-04-05 发布日期:2023-06-02
  • 通讯作者: 刘明言
  • 作者简介:王倩倩(1998—),女,硕士研究生,w17839148667@163.com
  • 基金资助:
    国家重点研发计划项目(2019YFB1504104)

Study on the effect of ultrasonic degassing in water

Qianqian WANG1(), Mingyan LIU1,2(), Yongli MA1   

  1. 1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
    2.State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300350, China
  • Received:2022-12-29 Revised:2023-03-20 Online:2023-04-05 Published:2023-06-02
  • Contact: Mingyan LIU

摘要:

超声波脱气技术在化工、冶金、环境以及地热能利用等领域具有现实或潜在的应用价值。但是,目前对空气-水系统中超声波脱气规律的研究还相对较少。开展了空气-水系统中的超声波脱气实验研究,在不同的操作参数下,如超声波电功率、频率等,研究了超声波对气体脱除的实际效果。同时将超声波技术与真空脱气技术相结合,探究其脱气效果。结果表明,在实验条件下,随着超声波频率的升高,脱气效果下降;随着超声波电功率的升高,脱气效果提升;与单独真空脱气相比,超声波与真空脱气结合时,脱气效果显著提升;在流动条件下,随着流量增加,脱气效果降低。通过KI实验和可视化方法对超声过程中的声空化现象进行了研究,研究结果可为超声波脱气的工业应用提供基础指导。

关键词: 超声波, 气体, 流动, 真空脱气, 反应

Abstract:

Ultrasonic degassing technology has practical or potential application value in chemical industry, metallurgy, environment, and geothermal energy utilization. However, there are few reports on ultrasonic degassing in air-water system. Therefore, this paper carried out the experimental study of ultrasonic degassing in the air-water system. The actual effect of ultrasonic on gas removal was studied under different operating parameters, such as ultrasonic electric power and frequency. At the same time, ultrasonic technology and vacuum degassing technology were combined to explore the degassing effect. The results show that the degassing effect decreases with the increase of ultrasonic frequency under the experimental conditions. The degassing effect increases with the increase of ultrasonic electric power. Compared with vacuum degassing alone, ultrasonic degassing combined with vacuum degassing can significantly improve the degassing effect. Under flow conditions, the degassing effect decreases with the increase of flow rate. The acoustic cavitation phenomenon in ultrasonic process was studied by KI experiment and visualization method. The results can provide basic guidance for the industrial application of ultrasonic degassing.

Key words: ultrasonic, gas, flow, vacuum degassing, reaction

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