# US 10,369,495 B2 · Cleaning of oleaginous water III

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- Number: US 10,369,495 B2
- Document ID: US10369495B2
- Status: Granted
- Kind: B2
- Application number: 14/802,765
- Filed: 2015-07-17
- Published: 2016-01-14
- Granted: 2019-08-06
- Earliest claimed: 2009-01-12
- Assignees: Cameron Systems AS
- Applicants: Cameron Systems AS
- Inventors: Jorn Folkvang
- Web page: https://patentgrep.com/patent/US10369495B2

## CPC

- B01D 17/0205: {by gas bubbles or moving solids}
- B01D 17/0217: {by centrifugal force}
- B03D 1/1412: {with baffles, e.g. at the wall for redirecting settling solids}
- B03D 1/1456: {Feed mechanisms for the slurry}
- B03D 1/247: {Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type}
- C02F 1/006: {Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks (for settling tanks B01D21/24)}
- C02F 1/24: by flotation (C02F1/465 takes precedence)
- C02F 1/40: Devices for separating or removing fatty or oily substances or similar floating material (cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; devices in sewers for separating liquid or solid substances from sewage E03F5/14, e.g. for use in drains leading to the sewer E03F5/16)
- B03D 1/1475: {Flotation tanks having means for discharging the pulp, e.g. as a bleed stream}
- C02F 1/20: by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D)
- C02F 1/38: by centrifugal separation
- C02F 1/52: by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)}
- C02F 2101/32: Hydrocarbons, e.g. oil
- C02F 2103/10: from quarries or from mining activities
- C02F 2103/365: {from petrochemical industry (e.g. refineries)}
- C02F 2201/003: Coaxial constructions, e.g. a cartridge located coaxially within another
- C02F 2209/40: Liquid flow rate
- C02F 2301/026: Spiral, helicoidal, radial
- C02F 2301/043: Treatment of partial or bypass streams
- C02F 2301/08: Multistage treatments, e.g. repetition of the same process step under different conditions
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B03D: FLOTATION; DIFFERENTIAL SEDIMENTATION (sedimentation in general B01D21/00; in combination with other separation of solids B03B; sink-float separation B03B5/28; detergents, soaps C11D)
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)

## Abstract

The present invention comprises a process and apparatus for separation of hydrocarbons from hydrocarbon-containing produced water, wherein in stage 1 the hydrocarbon-containing produced water is supplied with a gas-containing component, whereupon a gas- and hydrocarbon-containing produced water mixture is fed to an inlet tube (22, 27) in the center of a tank, whereupon the said mixture is tangentially distributed via at least one nozzle (7) and at least one baffle plate (8.1), whereupon separated hydrocarbons are conveyed to at least one outlet from the tank and cleaned water is conveyed to an outlet (12) from the tank.

## Claims

### Claim 1

An apparatus for separating oil from oil-containing water, comprising:
a vessel comprising an upper chamber in fluid communication with a lower chamber;
an inlet tube connected to a gas injection line of the vessel;
an upper nozzle extending outward from the inlet tube into the upper chamber and configured to distribute the oil-containing water and gas tangentially into the upper chamber,
the inlet tube extending along a central axis of the vessel;
an upper oil outlet in the upper chamber configured to output oil and gas from the upper chamber; and
a lower oil outlet in the lower chamber configured to output oil and gas from the lower chamber.

### Claim 2 (depends on 1)

The apparatus of claim 1, further comprising a water outlet in the lower chamber configured to output water from the lower chamber.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the vessel comprises a separation plate defining the upper chamber and lower chamber.

### Claim 4 (depends on 1)

The apparatus of claim 1, further comprising a plurality of upper nozzles.

### Claim 5 (depends on 1)

The apparatus of claim 1, further comprising a baffle plate in the upper chamber located under the upper nozzle.

### Claim 6 (depends on 1)

The apparatus of claim 1, further comprising a lower nozzle extending from a separation plate into the lower chamber and configured to distribute the oil-containing water and gas tangentially into the lower chamber.

### Claim 7 (depends on 6)

The apparatus of claim 6, further comprising a plurality of lower nozzles.

### Claim 8 (depends on 6)

The apparatus of claim 6, further comprising a baffle plate in the lower chamber under the lower nozzle.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein the inlet tube extends from the bottom of the vessel.

### Claim 10 (depends on 2)

The apparatus of claim 2, further comprising a bed of gas coalescent material in the lower chamber configured such that the water flows through the bed before flowing out the water outlet.

### Claim 11 (depends on 1)

The apparatus of claim 1, further comprising a vortex breaker in the lower chamber.