Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-02-10
1978-02-07
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 84, 210294, 210320, B01D 1702, B01D 3302
Patent
active
040726096
ABSTRACT:
A single capacitance vessel is provided to receive the excess heavy phase discharges (normally water) from a bank of disc-nozzle centrifugal separators. The vessel has a reservoir chamber with a weir at one end. The heavy phase streams are delivered into the reservoir of fluid retained in this chamber. In the event there are any hydrocarbons in the heavy phase fluid, the former rise to the surface of the reservoir fluid and pass over the weir, together with some water. An inert gas blanket within the vessel pressurizes the reservoir so that a fluid backpressure is maintained at the discharge outlets of the separators. By use of this system, any fluid returned from the reservoir to the separators (which occurs when the feed to the separators is low in water) is substantially free of hydrocarbons which, if present, would deleteriously affect the operation of the separators. In addition, the fluid passing over the weir is separated by a downstream weir system into hydrocarbon rich and water-rich fractions which are separately recovered.
REFERENCES:
patent: 3446731 (1969-05-01), Harsh
patent: 3731802 (1973-05-01), James
patent: 3804252 (1974-04-01), Rishel
patent: 3846301 (1974-11-01), Stokes et al.
patent: 4021347 (1977-05-01), Teller et al.
Canada-Cities Service, Ltd.
Gulf Oil Canada Limited
Her Majesty the Queen in right of Canada as represented by the
Her Majesty the Queen in right of the Province of Alberta, Gover
Imperial Oil Limited
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