Structural differences of three-phase separators
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When two three-phase separators of the same volume (external dimensions) are connected in series, what are the differences in their internal structure between the first stage and the second stage?
This is mainly determined by the residence time of the separated liquid. The differences generally lie in the different heights of the weir plates, as well as in the different volumes of the oil tank and the water tank, which in turn results in different relative positions for the weir plates.
The structure is primarily considered based on residence time! It depends on the specific process requirements!
For the primary and secondary stages of the three-stage separator, the primary stage yields crude oil of lower purity, while the secondary stage produces crude oil of higher purity. The height of the retaining structure is generally taken into consideration; however, this height also needs to take into account the composition of water and oil. If the composition of the material in the primary separator is not specified, I believe it is possible to use the same height for the retaining structure~