Category: Oil Treating

Parallel Plate Interceptor Design Diagram

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Parallel Plate Interceptor Design Diagram

The parallel plate interceptor (PPI) is the early form of a plate coalescer. The basic design of parallel plate interceptor is a series of plates installed parallel to the longitudinal axis of an API separator as shown in figure above. The plates form a “V” shape so that the oil sheet moves up the underside […]

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SP Pack Separator

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SP Pack Separator

The SP Pack separator is developed by Paragon Engineering Services, this separator creates turbulent flow by forcing the water to flow through a serpentine pipe path. The path is correctly size to create a correct turbulence to cause coalescence but not great enough to shear the droplets. The pipe path will not cause a plugging […]

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Dissolved Gas Flotation Unit

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Dissolved Gas Flotation Unit

Dissolved gas unit allows the water and gas saturation in a contactor. A typical Dissolved gas unit works on 20 to 40 psig contact pressure, more gas can be saturated in higher pressure. The water is taken from the treated water; the gas saturated water is then injected into the floatation tank. The dissolved gas […]

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Increasing Retention Time to Create Larger Water Droplet

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A small increase in water droplet diameter will increase the settling rate since water droplet is squared in the settling equation. The water droplet size will increase within a retention time in the coalescing section, adding a heat input will speedup the process since heat will excites the collisions of small droplet to create larger […]

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Gravity Separation Velocity Calculation

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Gravity Separation Velocity Calculation

The gravity force is commonly used in oil treating equipment to separate the water from the oil in continues phase; the water droplet tends to separate from the oil since it’s heavier than the oil. The separation speed is limited by the drag force caused by the water movement through the oil; the constant velocity […]

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Oil Treating System Design Consideration

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Crude oil outputted from production separator may contain some water. The water is removed from crude oil through an oil treating process. There are factors to consider designing the oil treating system. Some major factors are: 1. Emulsion tightness. 2. The oil and water specific gravity. 3. Fluid quantity and water ration. 4. Paraffin forming. […]

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