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首页> 外文会议>International conference on circulating fluidized beds; 19960528-0601; Beijing(CN) >Axial Solids Holdup Profiles in a High-Density Circulating Fluidized Bed Riser
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Axial Solids Holdup Profiles in a High-Density Circulating Fluidized Bed Riser

机译：高密度循环流化床立管中的轴向固体持留曲线

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摘要

Experiments were conducted in a dual loop circulating fluidized bed apparatus which provides sufficient solids inventory and downcomer head to enable high solids flux to be achieved in the riser. Solids volumetric concentrations as high as 0.2 to 0.25 could be maintained in the entire height of a 6 m riser. At these high density conditions, the commonly observed refluxing of solids near the riser wall is replaced by a relatively homogeneous turbulent flow structure. Slip factors up to 10 were obtained in the developed region of the riser.
机译：在双回路循环流化床设备中进行实验，该设备提供足够的固体存量和降液管扬程，以使立管中的固体流量更高。在6 m立管的整个高度中，可以保持高达0.2至0.25的固体体积浓度。在这些高密度条件下，提升管壁附近常见的固体回流被相对均匀的湍流结构所代替。在立管的发达区域获得了高达10的滑移系数。

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