高温陶瓷管烟气除尘电模拟及仿真研究

发布时间：2018-09-05 12:02

【摘要】：根据工业生产对高温烟气净化技术的需求,指出陶瓷管过滤器的应用优势,并对陶瓷管过滤元件的过滤机理和过滤特性进行分析和研究,为今后合理设计及优化陶瓷管过滤器结构与控制系统、解决工业应用中的实际问题提供可靠的理论依据。根据空气动力学基本理论,以孤立捕集体为研究对象,对影响陶瓷管过滤器过滤性能的主要机理和重要因素进行研究,推导出各种捕集机理的捕集效率。应用流体力学的基本定律,对陶瓷管过滤器内的流体流动特性进行研究,分析主要结构参数和流动参数对陶瓷管过滤器过滤压降等性能的影响,推导出过滤过程中陶瓷管过滤器压降的计算公式。根据研究需要和现有实验条件,搭建一套陶瓷管过滤器实验系统,对不同条件下陶瓷管过滤器的过滤特性进行实验研究。根据陶瓷管过滤器内的气体流动特性和相似理论,建立电模拟模型,并利用实验结果对模型进行验证和修正。利用所建立的电模拟模型,进行不同渗透率陶瓷管混用的压降特性预测,指出陶瓷管混用不利于设备的统一维护。利用所建立的电模拟模型,进行陶瓷管过滤器使用寿命内不同条件下的压降特性预测,从理论上指导陶瓷管过滤器及脉冲反吹系统的设计。
[Abstract]:According to the demand of industrial production for high temperature flue gas purification technology, the application advantages of ceramic tube filter are pointed out, and the filtration mechanism and characteristics of ceramic tube filter element are analyzed and studied. It provides a reliable theoretical basis for the rational design and optimization of ceramic tube filter structure and control system and for solving practical problems in industrial application. According to the basic theory of aerodynamics, the main mechanism and important factors affecting the filtration performance of ceramic tube filter were studied, and the capture efficiency of each kind of capture mechanism was deduced. Based on the basic laws of fluid mechanics, the fluid flow characteristics in ceramic tube filter are studied, and the effects of main structure parameters and flow parameters on the filtration pressure drop of ceramic tube filter are analyzed. The formula for calculating the pressure drop of ceramic tube filter in the process of filtration is derived. According to the needs of the research and the existing experimental conditions, a set of ceramic tube filter experimental system was set up to study the filtration characteristics of ceramic tube filter under different conditions. According to the gas flow characteristics and similarity theory in ceramic tube filter, the electric simulation model is established, and the model is verified and corrected by the experimental results. The pressure drop characteristics of ceramic pipes with different permeability are predicted by using the electric simulation model, and it is pointed out that the mixed use of ceramic pipes is not conducive to the unified maintenance of the equipment. By using the established electric simulation model, the pressure drop characteristics of ceramic tube filter under different service life conditions are predicted, and the design of ceramic tube filter and pulse backblow system is theoretically guided.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X701.2;TQ174.7

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