A Down-Exhaust Cyclone Separator
A Down-Exhaust Cyclone Separator
复制标题
DOI：
10.1021/ie980551m
复制
发表时间：
1999-03
影响因子：
4.2
通讯作者：
Han-ping Chen;Z. Lin;Dechang Liu;X. S. Wang;M. Rhodes
中科院分区：
文献类型：
--
作者：
Han-ping Chen;Z. Lin;Dechang Liu;X. S. Wang;M. Rhodes
本文介绍了一种适用于循环床锅炉烟气−颗粒分离的主要设备--下排式旋风分离器的研制。它由一个由斜锥体连接的圆柱壳、一个导向体和一个向下的排气管组成。固体分离的原理类似于逆流旋风分离器，不同之处在于该分离器中的气体在轴向上从底部离开分离器。结果表明，该分离器在处理高固体负荷时，如循环床锅炉，在压降约400Pa时，分离效率可达99%左右。提出了一个基于径向固体混合机理的模型，该模型假定气体和颗粒在切向方向上的滑移可以忽略，颗粒是均匀分散的。该模型能够预测分级分离效率、总分离效率和切割直径。它可以与公告牌一起使用。
In this paper we report on the development of a down-exhaust cyclone separator suitable for use as a primary device for gas−particle separation in circulating fluidized-bed (CFB) boilers. It consists of a cylindrical shell which is joined by an inclined cone, a guide body, and a downward exhaust pipe. The principle of solids separation is similar to that in reverse flow cyclones, except that in this separator the gas leaves the separator axially at the bottom. It has been shown that this separator is capable of achieving a separation efficiency of around 99% in handling high solids loadings such as those in CFB boilers, at a pressure drop of around 400 Pa. A model based on the mechanism of radial solids mixing is proposed, which assumes that the slip between gas and particles in the tangential direction is negligible and that the particles are well-dispersed. This model enables prediction of grade separation efficiency, total separation efficiency, and cut diameter. It may be used in conjunction with a pr...