The characterization of industrial filter was investigated by alternation of gas?solid, gas?liquid filtration and gas?liquid?solid filtration experiments. By observing the microstructure of the filter surface, the reason of the filter pressure drop change and the filtration mechanism were demonstrated. The results showed that under the same filtration conditions, during gas?liquid filtration using solid?containing filter, due to the interaction between the droplets and the filter cake layer, the structure of the filter surface changed. The filter pressure drop can be divided into four stages: gas?solid filtration, cake layer abscission, droplet filling and surface filtration. Gas?solid filtration of liquid-containing filter can be divided into two stages: initial filtration and dust filling. Although liquid holdup of filter was different, and the pressure drop of gas?solid filtration was similar. And the growth rate of pressure drop in three-phase filtration was between the solid filtration and the liquid filtration, therefore the droplet can effectively suppress the pressure drop growth.
Yitong HAO Zhongli JI Zhen LIU Yufeng LIU
. Characterization of Pressure Drop in Three-phase Filtration on Natural Gas Filters[J]. The Chinese Journal of Process Engineering, 2017
, 17(6)
: 1140
-1147
.
DOI: 10.12034/j.issn.1009-606X.217136
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