Oil-water separation filter is mainly designed for oil-water separation. It contains two kinds of filter elements, namely coalescence filter and separation filter.
For example, in the oil product water removal system, after the oil flows into the coalescence separator, it first flows through the coalescing filter element, coalescing the filter element to filter out solid impurities, and agglomerating the tiny water droplets into larger water droplets.
Most of the agglomerated water droplets can be separated and removed from the oil by their own weight and settled into a collection tank. The oil then flows through the separation filter element. Since the separation filter element has good oleophilic and hydrophobic properties, the moisture is further separated, and finally, the clean, anhydrous oil product flows out of the coalescence separator.
The oil enters the lower part of the filter housing first through the inlet tube, and then flows from the outside to the inside of the filter element. At this time, the coarser particles will immediately settle and be discharged by the discharge valve. The smaller particles are intercepted by the filter element. After the clean oil is collected in the filter tray, it flows out of the coalescence separator through the outlet pipe. As the amount of oil to be processed increases, the pollutants deposited on the filter element will cause the pressure difference of the coalescer to rise.
When the pressure difference rises to 0.15Mpa, the coalescing filter element has been blocked and should be replaced. The oil flows from the inlet port of the coalescing separator into the primary tray and is then diverted to the inside of the primary filter element. After filtration, demulsification, water molecule growth, and coalescence, the impurities are trapped in the primary filter element and coalesced. The water droplets settle in the sedimentation tank and the oil enters the secondary filter element from the outside to the inside, and is collected in the secondary tray and flows out of the coalescence separator outlet.
The secondary filter material is hydrophobic, and the oil can pass smoothly. The free water is blocked by the filter element, flows into the sedimentation tank and is discharged through the purge valve.