Vertical Three-phase Separators Liquid Surge

Surge volume for hydrocarbon is the space between the high liquid level (HLL) at the “donut” baffle ring and the low liquid level (LLL) at the horizontal baffle which supports the coalescer. Surge volume for water is the space between the high interface level (see “Interface Levels” in Section 364 below) and the bottom of the coalescer pad.


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