In the fields of aerospace, refinery and hydraulic system, moisture in oil should be controlled within a certain range. Oil?water coalescing separator is an effective method to remove water from oil, but in some areas, the oil usually contains non-hydrocarbon components that affect filtration efficiency. In order to explore the influence of non-hydrocarbon compounds in oil on the coalescing properties of filter media, influence of phenol concentration on efficiency and pressure drop of oleophilic?hydrophobic filter material were studied experimentally by adding phenol of different concentrations to the emulsion of 1000?10?6(wt) water content. The results showed that the pressure drop of the filter material in this experiment had three stages: oil wetting filter material and preliminary formation of water films, water film reaching steady state, droplet shedding and coalescence reaching the dynamic balance. With the increase of phenol concentration, the hydrophobic state of the filter material gradually changed to hydrophilic state, the filter material had undergone three stages: hydrophobic state, transition state and hydrophilic state. When the molar ratio of phenol to water was about 1:3.3, the hydrophobic state changed into transition state, when the molar ratio of phenol to water was about 1:1.6, the transition state changed into hydrophilic state. C6H6O(H2O)2 was the most stable structure of phenol combined with water.
Ji GUO Zhongli JI
. Influence of phenol concentration on coalescence performance of an oleophilic?hydrophobic filter material[J]. The Chinese Journal of Process Engineering, 2019
, 19(6)
: 1143
-1152
.
DOI: 10.12034/j.issn.1009-606X.219127
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