在存在圆柱形和形反射器的情况下,声化学反应器的表征
Hamza Ferkous1, Oualid Hamdaoui2, Christian Pétrier3
1Department of Process Engineering, Faculty of Technology, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, Algeria.
Ultrasonics sonochemistry
|August 16, 2023
概括
反射器提高了超声波反应器的效率,用于降低水污染物的降解. 一个形反射器显著提高了声化学氧化,而一个圆柱形的反射器阻碍了它,通过聚焦声波和改变化.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 声学 声学 在声学方面
背景情况:
- 有效的水污染物的声化学降解需要反应堆中的高声能度.
- 超声波系统的有效性取决于优化声场分布和化气泡动态.
研究的目的:
- 研究圆柱形和圆形不钢反射器对声化学氧化活性的影响.
- 评估反射器如何改变超声波反应器中的声力传输,洞化分布和基生成.
主要方法:
- 热度测量表征测量了有效的声力传输在各种频率 (300-800 kHz) 和功率 (40-120 W) 上.
- 二氧化物剂量测量评估了非化学氧化活性,量化了基生成.
- 声化学发光 (SCL) 成像可视化了声腔泡的分布.
主要成果:
- 形反射器在630kHz和120W时显著增加了60.5%的三化物形成率,改善了声化学氧化.
- 圆柱形反射器在所有测试条件下灭了氧化物氧化.
- 反射器,特别是弗雷内尔区的形类型,显著改变了超声波场和化气泡分布.
结论:
- 反射器的形状和位置极大地影响了超声波场,空洞化和声化学氧化效率.
- 形反射器有望增强声解过程,而圆柱形反射器可能是有害的.
- 优化反射器设计是最大限度地提高水处理超声波反应器性能的关键.
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