Chen C J
Department of Environmental Engineering and Health, Tajen Institute of Technology, Ping-Tung Hsien, Taiwan.
J Air Waste Manag Assoc. 2001 Oct;51(10):1471-5. doi: 10.1080/10473289.2001.10464364.
The pressure drop of ladder vanes in a baghouse could be reduced by decreasing the vane number and adjusting the inclined angle of the vane. Two types of flow distributors were utilized to test pressure drop caused by the structure of a baghouse. The pressure drops were measured by an inclined manometer under various filtration velocities. The purpose of this study is to understand the improvement effect of pressure drop saving for the traditional ladder vanes. Experimental results showed that the pressure drop of the Vane 3-1 configuration (flow distributor with three vanes perpendicular to the inlet flow) was higher than that of the Empty configuration (without flow distributors). The Vane 3-1 configuration could not reduce the pressure drop because of the barrier effect. By reducing the number and adjusting the angle of the vanes, the barrier effect was decreased, and the pressure drop of the Vane 2-1 configuration was much lower than that of the Vane 3-1 configuration. The largest difference in pressure drop between Vane 2-1 and Vane 3-1 was 1.702 cm w.g. at a filtration velocity of 4.17 cm/sec and, in terms of percentage, is 18.52% corresponding to a filtration velocity of 2.25 cm/sec. The improvement effect on the pressure drop saving for Vane 3-1 was significant.
通过减少叶片数量和调整叶片倾斜角度，可以降低布袋除尘器中梯形叶片的压降。使用了两种类型的气流分布器来测试布袋除尘器结构引起的压降。在不同的过滤风速下，用倾斜式压力计测量压降。本研究的目的是了解传统梯形叶片在节省压降方面的改进效果。实验结果表明，叶片3 - 1配置（带有三个垂直于进气流的叶片的气流分布器）的压降高于空配置（无气流分布器）。由于阻挡效应，叶片3 - 1配置无法降低压降。通过减少叶片数量和调整叶片角度，阻挡效应降低，叶片2 - 1配置的压降远低于叶片3 - 1配置。在过滤风速为4.17厘米/秒时，叶片2 - 1和叶片3 - 1之间的最大压降差值为1.702厘米水柱，在过滤风速为2.25厘米/秒时，对应的百分比为18.52%。叶片3 - 1在节省压降方面的改进效果显著。
