| 摘要 |
A longitudinally horizontal pressure vessel desalts a fluid mixture of oil, an emulsion of oil globules encapsulated in salt water casings, gas and/or free water. A vertical wall splits the vessel into a double length flow path extending from an inlet to separate outlets for discharging the gas, the free water and the oil. A plurality of vertical baffles at intervals between the inlet and the outlets are divided along horizontal lines into a lowermost perforated zone for passing free water, a lower central zone for blocking passage of the emulsion, an upper central perforated zone for stripping the salt water casing from the oil globules and for passing oil and an uppermost open zone for passing gas. The line dividing the lower and upper central zones of each baffle are higher than the corresponding line of each preceding baffle along the flow path extending from the inlet to the outlets. Fire tubes disposed on both sides of the wall proximate the second end of the vessel heat the fluid to approximately 120° F. Free water is removed from the vessel upstream of the fire tubes. A horizontal high voltage grid system immersed in the emulsion blocked between baffles downstream of the fire tubes facilitates breaking of the emulsion. A slot with a vertically adjustable lower perimeter in the fluid path proximate the outlets permits control of the retention time of oil in the vessel.
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