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Hydrodynamic characteristics of a 2D2D cyclone separator with a finned cylindrical body
Powder Technology ( IF 4.5 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.powtec.2020.01.021
Mahesh Dasar , Ranjit S. Patil

Abstract Cyclone separators used for separating solid particles from the gases mainly employed in electricity generating units having fluidized bed boilers and in other industries such as cement industries. In the present study, cylindrical portion of the nonfinned (conventional) cyclone separator (nfcs) was reshaped by fixing triangular helical fins in order to improve its performance in terms of collection efficiency. Fluid dynamic characteristics like axial velocity, tangential velocity, pressure drops etc. were studied which influences the collection efficiency by varying the fin size (fs) such as 5.0 mm, 7.5 mm and 10.0 mm and also by varying fin pitch (fp) as 50.0 mm and 30.0 mm. With available experimental work, validation was accomplished for the nfsc before proceeding computational study on the novel triangular finned cyclone separators (fcs). For the particles' size less than 3 μm, comparatively proposed triangular fin with fs & fp as 7.5 mm & 30.0 mm respectively was giving improved collection efficiency than other selected separators. Improvement in the collection efficiency of triangular finned cyclone separators (fcs) was perceived from 5% to 10% over the conventional cyclone separator (nfcs). Main role of the cyclone separators is to separate the particles from gases which was unruffled after by inclusion of fins. Rather fin inclusion has played a dominant role in minimizing very fine particulate matter emissions which otherwise leads to severe health problems.

中文翻译:

带翅片圆柱体的二维旋风分离器的水动力特性

摘要 旋风分离器用于从气体中分离固体颗粒,主要用于具有流化床锅炉的发电机组和其他行业,如水泥行业。在本研究中,非翅片(传统)旋风分离器 (nfcs) 的圆柱形部分通过固定三角形螺旋翅片进行了重塑,以提高其在收集效率方面的性能。研究了流体动力学特性,如轴向速度、切向速度、压降等,这些特性通过改变翅片尺寸 (fs) 如 5.0 mm、7.5 mm 和 10.0 mm 以及改变翅片间距 (fp) 为 50.0 来影响收集效率毫米和 30.0 毫米。有了可用的实验工作,在对新型三角翅片旋风分离器 (fcs) 进行计算研究之前,对 nfsc 进行了验证。对于小于 3 μm 的颗粒尺寸,比较推荐的 fs 和 fp 分别为 7.5 mm 和 30.0 mm 的三角形翅片比其他选定的分离器具有更高的收集效率。与传统旋风分离器 (nfcs) 相比,三角翅片旋风分离器 (fcs) 的收集效率提高了 5% 至 10%。旋风分离器的主要作用是将颗粒与通过包含翅片后未扰动的气体分离。相反,鳍片夹杂物在最大限度减少极细颗粒物排放方面发挥了主导作用,否则会导致严重的健康问题。与其他选定的分离器相比,fs 和 fp 分别为 7.5 毫米和 30.0 毫米的相对建议的三角形翅片提供了更高的收集效率。与传统旋风分离器 (nfcs) 相比,三角翅片旋风分离器 (fcs) 的收集效率提高了 5% 至 10%。旋风分离器的主要作用是将颗粒与通过包含翅片后未扰动的气体分离。相反,鳍片夹杂物在最大限度减少极细颗粒物排放方面发挥了主导作用,否则会导致严重的健康问题。与其他选定的分离器相比,fs 和 fp 分别为 7.5 毫米和 30.0 毫米的相对建议的三角形翅片的收集效率更高。与传统旋风分离器 (nfcs) 相比,三角翅片旋风分离器 (fcs) 的收集效率提高了 5% 至 10%。旋风分离器的主要作用是将颗粒与通过包含翅片后未扰动的气体分离。相反,鳍片夹杂物在最大限度减少极细颗粒物排放方面发挥了主导作用,否则会导致严重的健康问题。与传统旋风分离器 (nfcs) 相比,三角翅片旋风分离器 (fcs) 的收集效率提高了 5% 至 10%。旋风分离器的主要作用是将颗粒与通过包含翅片后未扰动的气体分离。相反,鳍片夹杂物在最大限度减少极细颗粒物排放方面发挥了主导作用,否则会导致严重的健康问题。与传统旋风分离器 (nfcs) 相比,三角翅片旋风分离器 (fcs) 的收集效率提高了 5% 至 10%。旋风分离器的主要作用是将颗粒与通过包含翅片后未扰动的气体分离。相反,鳍片夹杂物在最大限度减少极细颗粒物排放方面发挥了主导作用,否则会导致严重的健康问题。
更新日期:2020-03-01
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