颗粒床过滤除尘技术研究进展

发布时间：2018-10-20 19:32

【摘要】：高温气体高效除尘技术的开发与应用对于提高工业过程能量利用效率、实现清洁生产具有重要意义,其中颗粒床过滤技术因兼顾效率与压降、经济性好、苛刻环境适应性强等特点,为解决固体燃料高效综合利用、清洁发电、余热利用等领域涉及的高温气体净化难题提供了一条有效的途径。本文首先对颗粒床的除尘机理和分类进行了介绍,重点综述了颗粒床的结构形式和改进研究进展,从固定床、移动床到其他形式颗粒床,然后概述了颗粒床性能影响因素和工程应用研究现状,最后对颗粒床的发展趋势进行了展望。相较于固定床,移动床尽管效率尚待提升,运行控制因素也较多,但移动床过滤时效率和压降基本保持稳定,可以连续操作,更加适合工业化应用。本文总结出移动床是目前研究的热点,增强颗粒层整体均匀流动性和利用效率、优化进气方式以及集成性针对性设计是未来移动床的发展方向。
[Abstract]:The development and application of high-temperature gas high-efficiency dust removal technology is of great significance for improving the energy utilization efficiency of industrial process and realizing clean production, among which the granular bed filtration technology has good economy due to the consideration of both efficiency and pressure drop. The harsh environmental adaptability provides an effective way to solve the problem of high temperature gas purification in the fields of high efficiency comprehensive utilization of solid fuel, clean power generation, waste heat utilization and so on. In this paper, the dust removal mechanism and classification of granular bed are introduced, and the structure and improvement of granular bed are reviewed, from fixed bed, moving bed to other granular bed. Then, the influencing factors of granular bed performance and the research status of engineering application are summarized. Finally, the development trend of granular bed is prospected. Compared with the fixed bed, the moving bed is more stable in efficiency and operation control factors than in the fixed bed, but the efficiency and the pressure drop in the filtration of the moving bed are basically stable and can be operated continuously, which is more suitable for industrial application. In this paper, it is concluded that moving bed is a hot research topic at present. The development direction of moving bed in the future is to enhance the overall uniform fluidity and utilization efficiency of granular layer, to optimize the air intake mode and to design the integrated bed.
【作者单位】：中国石油大学(北京)化学工程学院;过程流体过滤与分离技术北京市重点试验室;
【基金】：国家重点基础研究发展计划(2014CB744304) 中国科学院过程工程研究所多相复杂系统国家重点实验室开放课题(MPCS2014D11)项目
【分类号】：X701.2

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