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Particle Separation Efficiency of a Uniflow Deduster with Different Types of Dusts 不同粉尘类型的单流除尘器的颗粒分离效率
在对设计参数进行敏感性分析的基础上,开发并评估了一种原型单流除尘器——旋风式除尘器。原型的总压降为0.4英寸。水柱(100Pa),空气流量为288立方英尺(135L/s)。该样机用于验证单流颗粒分离理论,并评估颗粒分离效率。评估中使用了两种粉尘,一种是人工商业粉尘,另一种是真正的猪舍粉尘。经证实,在空气净化过程中,可以从气流中分离出小于10mm的颗粒。除尘器的切割尺寸从1毫米到4毫米不等。 5mm,这取决于测量设备是使用激光粒子计数器还是空气动力粒度仪。根据使用颗粒计数器测量的颗粒计数浓度,除尘器的颗粒分离效率随着颗粒尺寸的增加而增加,对于7mm的颗粒,分离效率为77%,对于10mm的颗粒,分离效率为90%。就使用质量采样器测量的质量浓度而言,颗粒分离效率为85%。由于大部分粉尘质量都是由较大的颗粒造成的,因此颗粒数分离和质量分离效率非常一致。除尘器可能是清洁多尘空间的有效方法。 单位:双引文:阿什雷交易,第107卷,第。2
Based on a sensitivity analysis of design parameters, a prototype uniflow deduster--a cyclone-type dust separator-- was developed and evaluated. The prototype has a total pressure drop of 0.4 in. water column (100 Pa) and an air flow capacity of 288 cfm(135L/s). The prototype was used to verify the uniflow particle separation theory and to evaluate the particle separation efficiency. Two types of dust were used in the evaluation, an artificial commercial dust and real swine building dust. It was confirmed that it is possible to separate particles smaller than 10mm from an airstream in air cleaning. The cut-size of the deduster ranged from 1mm to 4.5mm, depending on whether a laser particle counter or an aerodynamic particle sizer was used as the measurement device. In terms of particle count concentration measured using particle counters, the particle separation efficiency of the deduster increased with the particle size, 77% for particles at 7mm and 90% for particles at 10mm. In terms of mass concentration measured using mass samplers, the particle separation efficiency was 85%. Because most of the dust mass is attributed to the larger particles, the number separation and mass separation efficiency agreed very well. The deduster could be an effective method for cleaning dusty airspaces.Units: Dual
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