Category Archives for Water Treating Equipment

Hydrocyclone Separator

Hydrocyclone separators, sometimes called enhanced gravity separators, use centrifugal force to remove oil droplets from oily water. As shown in Figure 7-16, static hydrocyclone separator consist of the following four sections: a cylindrical swirl chamber, a concentric reducing section, a … Continue reading

06. January 2011 by Jack
Categories: Water Treating Equipment | Tags: , , , | 1 comment

Skim Pile

The skim pile is a type of disposal pile. As shown in Figure 7-18, flow through the multiple series of baffle plates creates zones of no flow that reduce the distance a given oil droplet must rise to be separated … Continue reading

05. September 2009 by Jack
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Disposal Piles

Disposal piles are large diameter (24- to 48-inch) open-ended pipes attached to the platform and extending below the surface of the water. Their main uses are to (1) concentrate all platform discharges into one location, (2) provide a conduit protected … Continue reading

05. September 2009 by Jack
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Sizing Dispersed Gas Units

It can be shown mathematically that an efficient design must have a high gas induction rate, a small diameter induced gas bubble, and relatively large mixing zone. The design of the nozzle or rotor, and of the internal baffles, is … Continue reading

05. September 2009 by Jack
Categories: Flotation Units | Tags: , | Leave a comment

Dispersed Gas Units

In dispersed gas units gas bubbles are dispersed in the total stream either by the use of an inductor device or by a vortex set up by mechanical rotors. Figure 7-14 shows a schematic cross section of a unit that … Continue reading

05. September 2009 by Jack
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Dissolved Gas Units

Dissolved gas designs take a portion of the treated water effluent and saturate the water with natural gas in a contactor. The higher the pressure the more gas can be dissolved in the water. Most units are designed for a … Continue reading

05. September 2009 by Jack
Categories: Flotation Units | Tags: | Leave a comment

Free-Flow Turbulent Coalescers

The gravity settling devices previously discussed make use of closely spaced internals to reduce the distance an oil droplet must rise to meet a coalescing surface. This is because within a tank or vessel there is verylittle turbulence to promote … Continue reading

05. September 2009 by Jack
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Precipitators Coalescing Filters

In the past, it was common to direct the water to be treated through a bed of excelsior or another similar medium, as shown in Figure 7-9, to aid in the coalescing of oil droplets. However, the coalescing medium  has … Continue reading

05. September 2009 by Jack
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Cross-Flow Devices

Equipment manufacturers have modified the CPI configuration for horizontal water flow perpendicular to the axis of the corrugations in the plates as shown in Figure 7-8. This allows the plates to be put on a steeper angle to facilitate sediment … Continue reading

04. September 2009 by Jack
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Corrugated Plate Interceptor

The most common form of parallel plate interceptor used in oil facilities is the corrugated plate interceptor (CPI). This is a refinement of the PPI in that it takes up less plan area for the same particle size removal, and … Continue reading

04. September 2009 by Jack
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