自吸式旋流微泡发生器的试验与研究

发布时间：2018-06-07 14:48

本文选题：微泡发生器 + 水处理　；参考：《昆明理工大学》2015年硕士论文

【摘要】：随着现代工业的逐步发展,工业技术给社会经济和人们的生活带来了翻天覆地的变化,创造出了更为便捷、舒适的生活方式,但与此同时也带来了很多的环境问题,尤其是水污染问题。水是生命之源,最近几年,水污染问题引起了中央政府及国务院的高度重视。水污染问题,已刻不容缓,势在必行。本文针对污水处理的难题,提出了一种在国内运用较少的气浮技术水处理方式。气浮技术设备简单,二次污染少,效果好,一直以来都备受人们的关注,但微泡发生器作为气浮技术的核心部分,却很少有人问津。本文首先对气浮技术在国内外的发展现状进行阐述,了解了当今气浮技术的基本状况。研究了前人研制出来的多种发泡的基本原理,经过启发和构思,大胆假设出了一种新型的微泡发生器,针对假设,本文将对其进行系统的研究和分析实验。本文对气浮技术的基本理论进行了研究,也对微泡发生器的工作原理和机制做了阐述。经过研究与分析,得到了几个对微泡发生器性能影响比较重要的参数。针对这些参数本文采用了FLUENT软件进行建模仿真,对其内部的流场进行具体分析,试图找到比较符合其在实际工况下的参数值。在仿真中由于影响其性能参数较多,本文遵循单一变量的原则,逐个对其内腔直径、空气入口直径、多相流混合出口直径和锥形腔直径与角度进行离散化分析研究,最后再对微泡发生器性能影响较大的参数进行细化分析,得到最优的参数。最优参数得到后根据所得的参数再进行实际设备的加工,验证其在实际工况下的工作状态,对其性能进行测试,进而验证分析研究理论的正确性。本文研究项目受助于国家自然科学基金,以气浮浮选技术为理论基础,以水处理的效果数据为实验参照量,对此微泡发生器设备进效果进行验证。针对该微泡发生器的研究对于实际生产中的运用具备一定的参考价值。
[Abstract]:With the gradual development of modern industry, industrial technology has brought tremendous changes to social economy and people's lives, created a more convenient and comfortable way of life, but also brought a lot of environmental problems at the same time. Water pollution in particular. Water is the source of life. In recent years, water pollution has attracted great attention of the central government and the State Council. The problem of water pollution is urgent and imperative. Aiming at the difficult problem of sewage treatment, this paper puts forward a water treatment method which is less used in domestic air floatation technology. The air floatation technology has been paid more attention for its simple equipment, less secondary pollution and good effect. However, as the core part of the air floatation technology, the micro bubble generator is seldom concerned. In this paper, the development of air flotation technology at home and abroad is described, and the basic status of air floatation technology is understood. This paper studies the basic principle of many kinds of foaming developed by predecessors. Through inspiration and conception, a new type of microbubble generator is boldly hypothesized. Aiming at the hypothesis, this paper will carry out systematic research and analysis experiment on it. In this paper, the basic theory of air floatation technology is studied, and the working principle and mechanism of micro bubble generator are also described. Several important parameters which affect the performance of the microbubble generator are obtained through research and analysis. In this paper, the FLUENT software is used to model and simulate these parameters, and the flow field inside them is analyzed in order to find the parameters which accord with the actual working conditions. In the simulation, due to the large number of performance parameters, following the principle of a single variable, the diameter of the inner cavity, the air inlet diameter, the mixed outlet diameter of the multiphase flow and the diameter and angle of the conical cavity are discretized one by one. Finally, the parameters of the microbubble generator are analyzed in detail, and the optimal parameters are obtained. After the optimal parameters are obtained, the actual equipment is processed according to the obtained parameters, the working state of the equipment is verified under the actual working conditions, its performance is tested, and the correctness of the analysis and research theory is verified. The research project is supported by the National Natural Science Foundation of China. Based on the flotation technology and the experimental data of water treatment, the effect of the micro bubble generator is verified. The research on the micro-bubble generator has certain reference value for practical application.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703.3

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