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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Hot-gas flow and particle transport and deposition in a candle filter vessel
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Hot-gas flow and particle transport and deposition in a candle filter vessel

机译：蜡烛过滤容器中的热气流和颗粒传输与沉积

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摘要

Hot-gas flow and particle transport and deposition in an industrial filtration system are studied.The special example of the Siemens-Westinghouse filter vessel at the Power System Development Facility at Wilsonville,Alabama is treated in detail.This tangential flow filter vessel contains clusters of 91 candle filters,which are arranged in two tiers.The upper tier containing 36 candle filters is modeled by six equivalent filters.Seven equivalent filters are used in the computational model to represent the 55 candle filters in the lower tiers.The Reynolds stress turbulent model of FLUENT code is used,and the gas mean velocity and root mean square fluctuation velocities in the filter vessel are evaluated.The particle equation of motion used includes drag and gravitational forces.The mean particle deposition patterns are evaluated and the effect of particle size is studied.The computational results indicate that large particles of the order of 10 mum or larger are removed from the gas due to the centrifugal forces exerted by rotating flow between the shroud and the refractory.
机译：研究了工业过滤系统中的热气流，颗粒传输和沉积。详细讨论了位于阿拉巴马州威尔逊维尔的电力系统开发设施中的Siemens-Westinghouse过滤器的特殊示例。 91个烛式过滤器分为两层，上层包含36个烛式过滤器，由六个等效过滤器建模。计算模型中使用了七个等效过滤器来表示较低层中的55个烛式过滤器。雷诺应力湍流模型使用FLUENT代码对粒子进行计算，评估滤池中的气体平均速度和均方根波动速度。所使用的粒子运动方程包括阻力和重力。评估粒子的平均沉积方式，并对粒子大小的影响进行评估计算结果表明，从气体中去除了10微米或更大数量级的大颗粒。旋转在护罩和耐火材料之间施加的离心力。

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