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Two Functions Of Three-phase Separator
- Jul 24, 2017 -

The structure of the three-phase separator is divided into the separating sedimentation chamber and the oil chamber. The mixture of oil, gas and water enters the three-phase separator after the rectifier, the corrugated plate group, the inclined Plate group and so on most liquid subsidence to the separation settlement chamber's liquid phase area, Three-phase Separator very few liquids depend on the liquid gravity to continue to settle, the remaining liquid passes through the mist remover further separation, the gas enters the natural system through the pressure regulating valve. The settling of the oil and water mixture after a period of time due to the difference in density gradually stratified, water deposition in the water collection and the bottom of the liquid phase zone, Three-phase Separator the upper part of the liquid phase is the oil layer. When the liquid level of the oil layer is higher than the top of the grease plate, it slowly flows into the oil chamber, which is then discharged from the oil outlet at the lower part of the oil chamber. The water deposition in the liquid phase zone is separated into the bottom of the settling chamber and discharged by the outlet valve.

The three-phase separator is an important structure of EGSB, UASB and other anaerobic reactors, which plays an important role in the normal operation of the sludge bed and the good effluent quality. Three-phase Separator It also has the following two functions: one is to collect methane from the reaction chamber under the separator, and the other is to precipitate the suspended matter on the separator. To achieve these two functions, the three-phase separator set in an anaerobic reactor shall meet the following conditions:

1. The bubbles must be separated before the mixture of water and sludge enters the sedimentation chamber.

2. The surface load of the settling zone shall be below 3.0/(M2·h), the flow velocity of the inflow channel is not greater than the settling velocity of the granular sludge before the mixture enters the settling area.

3. Three-phase Separator Because the anaerobic sludge has the condensation nature, the liquid flow rises through the mud layer, should be advantageous in the sedimentation device to form the sludge layer. The inclined wall angle of settling area should be suitable, Three-phase Separator so that the sludge deposited on the inclined bottom should not accumulate and slip back into the reaction zone as soon as possible.

4. The gas chamber should be prevented from producing a large amount of foam, and the height of the gas chamber should be controlled to prevent the scum from clogging out of the trachea.

The gas, liquid and solid mixture rises to the three-phase separator, and when the bubbles meet the reflective plate in the lower part of the separator, the gas chamber is separated from the solid and liquid effectively. The sludge after the separation of the bubbles falls back into the reaction zone under the action of gravity, and the other part increases with the fluid along a narrow path, and enters the settling zone. The clarifier is discharged through the overflow weir, and the sludge is flocculation, Three-phase Separator sedimentation and concentration in the settling area, then it declines along the inclined wall and returns to the reaction zone through the sludge return port. Because there is no air bubbles in the settling zone, the density of the water column above the sludge reflux is greater than the liquid density in the reactor, so that the concentrated sludge can return to the reaction zone and achieve solid-liquid separation.