MODEL CALIBRATION FOR PRESSURE-DROP IN A PULSE-JET CLEANED FABRIC FILTER
MODEL CALIBRATION FOR PRESSURE-DROP IN A PULSE-JET CLEANED FABRIC FILTER
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DOI：
10.1016/0004-6981(83)90348-7
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发表时间：
1983-01-01
影响因子：
5
通讯作者：
LEITH, D
中科院分区：
文献类型：
--
作者：
KOEHLER, JL;LEITH, D
基于达西定律的模型可以预测脉冲射流清洗织物过滤器的压降。该模型考虑了过滤速度、1个过滤周期内增加的粉尘面密度和脉冲压力的影响。在3种不同的过滤速度下，对3种织物表面处理和3种粉尘进行了27种不同的实验，收集了用于校准模型的数据。使用的织物是聚酯毡，未经处理，烧焦或聚四氟乙烯层压表面。使用的粉尘是花岗岩、石灰石和粉煤灰。过滤速度分别为50、75和100 mm/s。在一个过滤周期内增加的粉尘面密度是恒定的，脉冲压力也是恒定的。在这些条件下，织物表面处理本身在很大程度上决定了模型中3个常数中的2个的值；第三个常数取决于每个滤袋顶部文丘里管的压降特性。
A model based on Darcy''s law allowed prediction of pressure drop in a pulse-jet cleaned fabric filter. The model considered the effects of filtration velocity, dust areal density added during 1 filtration cycle and pulse pressure. Data used to calibrate the model were collected in experiments with 3 fabric surface treatments and 3 dusts conducted at 3 filtration velocities, for a total of 27 different experimental conditions. The fabric used was polyester felt with untreated, singed or PTFE[polytetrafluoroethylene]-laminated surface. The dusts used were granite, limestone and fly ash. Filtration velocities were 50, 75 and 100 mm/s. Dust areal density added during 1 filtration cycle was constant, as was pulse pressure. Under these conditions, fabric surface treatment alone largely determined the values for 2 of the 3 constants in the model; the 3rd constant depended on pressure drop characteristics of the venturi at the top of each filter bag.