熔融盐反应器流体动力特性实验研究

发布时间：2018-03-16 08:25

本文选题：危险废弃物　切入点：熔融盐处理技术　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：危险废弃物污染问题已引起国际社会的广泛关注,如何在快速发展现代工业的同时又有效的保护环境是现代工业发展中迫切需要解决的问题。熔融盐处理技术在危险废弃物处置方面具有广阔的应用前景,然而对熔融盐处理技术的研究还不够全面。本文对熔融盐反应器的流体动力特性进行了深入研究,为熔融盐反应器设计和反应条件选择提供理论依据。在熔融盐反应器冷态模拟实验装置上,采用压差传感器实时采集压力波动信号,对压力波动进行了统计分析和频谱分析,获得流体动力特性的变化规律。重点研究了不同直径、不同浸没深度、不同肋型的进气管参数对局部气含率、流型等流体动力特性的影响。在熔融盐反应器冷态模拟实验装置上,采用摄影法研究了表观气速、进气管参数对流型的影响,总结了进气管参数对平均气含率、气泡停留时间等流体动力特性的影响。从流体动力特性的角度提出了改进熔融盐反应器和熔融盐反应实验条件的方法。'在高温熔融盐反应器上,用熔融盐氧化法处置废弃线路板,考察了反应温度、过量空气系数、表观气速、进气管肋型对烟气的影响。同时对熔融盐反应器的流体动力特性研究结论进行了验证。
[Abstract]:Hazardous waste pollution problem has aroused widespread concern in the international community, environmental protection and how to effectively in the rapid development of modern industry and is the urgent need to solve the problems in the development of modern industry. Molten salt processing technology has a wide application prospect in hazardous waste disposal, but the processing technology of molten salt is not comprehensive enough. The hydrodynamic characteristics of the molten salt reactor is studied, to provide the theory foundation for the selection of molten salt reactor design and reaction conditions. In the molten salt reactor cold model experimental apparatus, using pressure difference sensor to collect pressure fluctuation signals of pressure fluctuation were analyzed statistical analysis and spectrum variation to get the fluid dynamic characteristics. Focusing on the different diameter, different immersion depth, rate of gas containing parameters on different rib type pipe flow The influence of hydrodynamic characteristics. In the molten salt reactor cold model experiment, study the superficial gas velocity by the photographic method, the influence of inlet pipe parameters of convection type, summarizes the intake pipe parameters on average gas holdup, influence of dynamic characteristics of bubble residence time of fluid. The improved method of experimental conditions of melt salt reactor and molten salt reaction. In the molten salt reactor is put forward from the hydrodynamic characteristics of the angle, disposal of waste printed circuit boards by molten salt oxidation method, the effects of reaction temperature, excess air coefficient, superficial gas velocity, inlet pipe effect of flue gas rib type. At the same time to study the dynamic characteristics of the fluid on the conclusion the molten salt reactor is verified.

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X70;O35

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