Dust emission in powder handling: Free falling particle plume characterisation
Dust emission in powder handling: Free falling particle plume characterisation
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DOI：
10.1016/j.cej.2009.04.070
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发表时间：
2009-10-15
影响因子：
15.1
通讯作者：
Dodds, John A.
中科院分区：
文献类型：
--
作者：
Ansart, Renaud;de Ryck, Alain;Dodds, John A.
固体搬运过程中产生的粉尘，主要来自散装材料的自由落体及其对库存的影响。可能对操作员的健康构成威胁，也是粉尘爆炸的原因之一。粉尘排放控制系统的适当设计需要了解自由落体射流的行为，特别是下落粉尘携带的空气量和释放的粉尘浓度。本文着重研究了自由落体射流的液滴高度对颗粒大小、颗粒速度、颗粒浓度变化和粉尘羽流中夹带空气对分离的影响。这给出了自由落体过程中的重要参数和粉尘浓度的量化。(C)2009爱思唯尔B.V.保留所有权利。
Dust generation during solids handling, principally from the free falling of bulk materials and their impact on stockpiles. can be a health threat for operators and a cause of dust explosions. The proper design of a dust emission control system requires knowledge of the behaviour of the free falling jet, in particular the amount of air entrained by the falling powder and the concentration of dust liberated. The focus in this present paper is on the effect of drop height of a free falling jet on segregation by particle size, particle velocity, changes in particle concentration and entrained air in the dust plume. This gives a quantification of the important parameters and the concentration of dust emitted during a free fall. (C) 2009 Elsevier B.V. All rights reserved.