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基于fluent软件的旋风除尘器优化设计.docx


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基于fluent软件的旋风除尘器优化设计.docx
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摘要
旋风除尘器是一种重要的气-固分离设备,因为其结构简单、设备紧凑、制造容易、成本相对较低等优点,被广泛应用于矿山、化工、能源、环保、冶金、建材等众多工业领域。然而往往因其结构设计不正确,尺寸匹配不合理等因素限制了除尘效率的提高,并且能耗很大。
当前,随着经济增长及国家对环境保护日益重视,工业生产中,迫切需要一种高效率低能耗的新型旋风除尘器。为此,本文针对旋风除尘器传统设计方法不够完善,通用性差及其内部三维流场规律认识不全面等问题,采用优化设计和数值模拟相结合的研究方法,考察分析了不同情况下的颗粒运动轨迹及不同入口颗粒浓度、不同排气管插入深度、不同进气口形状、不同直管长度等操作与结构参数对分离性能的影响;采用Fluent软件进行数值模拟,基于上述的数值模拟结果,有效地预测了优化型旋风除尘器结构尺寸匹配的合理性及提出的优化设计方法的可行性,从而为今后旋风除尘器的研制提供了一种通用的设计方法。因此本文的研究无论是在工程应用,还是在理论研究方面上都具有十分重要的价值。
关键词:旋风除尘器;优化设计;数值模拟;Fluent





ABSTRACT
Cyclone separator is an important gas-solid separation equipment, which has many advantages, such as simple structure, compact equipment, easy to manufacture, relatively low-cost and so on. So it has been widely applied in the mining,chemical industry, energy source,environmental protection, metallurgy, building materials and the other industrial fields. However, because of unreasonable structure design and size matchingfactors, which restrict the efficiency improving, besides it wastes more energy consumption.
At present, with the rapid growth of the economy and paying more attention to environmental protection, people urgently need to research a new type cyclone separator that has much higher separation efficiency and lower consumption. Therefore, in view of the unperfect separation model and the weak prevalence of the traditional design method. In addition, people can’t understand accurately the separation theories of cyclone separator. Using numerical simulation and optimal design combination of research methods, For example, different inlet particle concentration, different insert depth and inlet shape, diffIerent vertical tube length of cyclone separator. Going on the 3D flow field numerical simulation with Fluent, based on theresults of 3D flow field numerical simulation, prove the rationality of the size match and the feasibility of the design optimization and propose auniversal design method for the future provision of cyclone separator. Therefore, it has significant applicat
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  • 时间2021-05-15