硫磺粉体在输送过程中静电规律研究
发布时间：2018-08-18 13:48
【摘要】：本文针对硫磺在管道中输送过程中的出现的静电等安全问题,进行了系统的研究,首先分析了硫磺粉体在管道中输送过程中产生静电的本质是硫磺粉体与管道摩擦产生的,而硫磺粉体在管道中得运动状态决定了其产生的静电量。本文应用Fluent软件对其运动规律进行了模拟,并根据管道长度、变径、弯度的模拟结果,采用实验室试验的方法对硫磺粉体在管道中摩擦产生静电与管道长度变化的情况进行研究,得出了在不同长度的管道摩擦产生静电大小的规律;然后对硫磺粉体在不同管径、管道弯道、管道渐变的管道中输送产生的静电量变化规律进行了研究,以及对不同含湿量的硫磺粉体在管道中输送产生的静电量变化规律进行了研究。根据Fluent软件的模拟结果和实验室测试表明,硫磺粉体在输送过程中,硫磺粉体在管道中运动摩擦产生的静电量随管道长度增加而增加,在达到粉体静电饱和之前,硫磺粉体输送产生的静电量和管道长度成正相关,并保持增长的趋势;在硫磺粉体输送系统中,管道弯头越多,产生的静电量越大;硫磺粉体在较大的管道输送产生的静电较小;含湿量越大时静电量越小;渐变管径可以有效的减少硫磺粉体在输送过程中产生的静电量。在上述研究的基础上,提出了硫磺粉体在输送过程中的减少静电的方法。
[Abstract]:Aiming at the safety problems such as static electricity in the process of sulfur transportation in pipeline, this paper makes a systematic study. Firstly, the essence of static electricity produced by sulfur powder in the transportation process of pipeline is analyzed, which is caused by friction between sulfur powder and pipeline. The amount of static electricity produced is determined by the moving state of sulfur powder in the pipeline. In this paper, Fluent software is used to simulate its motion, and according to the simulation results of pipeline length, diameter change and curvature, By using the method of laboratory test, the static electricity produced by friction of sulfur powder in the pipeline and the variation of the length of the pipe are studied, and the regularity of the static electricity produced by friction in the pipeline with different lengths is obtained, and then the sulfur powder in different pipe diameters is studied. In this paper, the variation law of electrostatic quantity produced by pipeline bend and pipeline gradual change is studied, and the change law of electrostatic quantity produced by sulfur powder with different moisture content in pipeline is also studied. According to the simulation results of Fluent software and laboratory tests, it is shown that during the transportation of sulfur powder, the amount of static electricity produced by moving friction of sulfur powder in the pipeline increases with the increase of the length of the pipe, and before the powder reaches electrostatic saturation, The amount of static electricity produced by sulfur powder transportation is positively correlated with the length of pipe, and the increasing trend is maintained, in the system of sulfur powder transportation, the more bends in the pipe, the more static electricity is produced. The static electricity produced by sulfur powder in large pipeline transportation is smaller; the electrostatic volume is smaller when the moisture content is higher; the gradual pipe diameter can effectively reduce the electrostatic volume of sulfur powder in the process of transportation. On the basis of the above research, the method of reducing static electricity during the transportation of sulfur powder is put forward.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ125.11
本文编号：2189656
[Abstract]:Aiming at the safety problems such as static electricity in the process of sulfur transportation in pipeline, this paper makes a systematic study. Firstly, the essence of static electricity produced by sulfur powder in the transportation process of pipeline is analyzed, which is caused by friction between sulfur powder and pipeline. The amount of static electricity produced is determined by the moving state of sulfur powder in the pipeline. In this paper, Fluent software is used to simulate its motion, and according to the simulation results of pipeline length, diameter change and curvature, By using the method of laboratory test, the static electricity produced by friction of sulfur powder in the pipeline and the variation of the length of the pipe are studied, and the regularity of the static electricity produced by friction in the pipeline with different lengths is obtained, and then the sulfur powder in different pipe diameters is studied. In this paper, the variation law of electrostatic quantity produced by pipeline bend and pipeline gradual change is studied, and the change law of electrostatic quantity produced by sulfur powder with different moisture content in pipeline is also studied. According to the simulation results of Fluent software and laboratory tests, it is shown that during the transportation of sulfur powder, the amount of static electricity produced by moving friction of sulfur powder in the pipeline increases with the increase of the length of the pipe, and before the powder reaches electrostatic saturation, The amount of static electricity produced by sulfur powder transportation is positively correlated with the length of pipe, and the increasing trend is maintained, in the system of sulfur powder transportation, the more bends in the pipe, the more static electricity is produced. The static electricity produced by sulfur powder in large pipeline transportation is smaller; the electrostatic volume is smaller when the moisture content is higher; the gradual pipe diameter can effectively reduce the electrostatic volume of sulfur powder in the process of transportation. On the basis of the above research, the method of reducing static electricity during the transportation of sulfur powder is put forward.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ125.11
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