FR2449165A1 - Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers - Google Patents

Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers

Info

Publication number
FR2449165A1
FR2449165A1 FR7903706A FR7903706A FR2449165A1 FR 2449165 A1 FR2449165 A1 FR 2449165A1 FR 7903706 A FR7903706 A FR 7903706A FR 7903706 A FR7903706 A FR 7903706A FR 2449165 A1 FR2449165 A1 FR 2449165A1
Authority
FR
France
Prior art keywords
tube
liq
lip
partition
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7903706A
Other languages
French (fr)
Other versions
FR2449165B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Francaise de Raffinage SA
Original Assignee
Compagnie Francaise de Raffinage SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Francaise de Raffinage SA filed Critical Compagnie Francaise de Raffinage SA
Priority to FR7903706A priority Critical patent/FR2449165A1/en
Publication of FR2449165A1 publication Critical patent/FR2449165A1/en
Application granted granted Critical
Publication of FR2449165B1 publication Critical patent/FR2449165B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E03F5/16—Devices for separating oil, water or grease from sewage in drains leading to the main sewer

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Removal Of Floating Material (AREA)

Abstract

A skimmer for use in a decantation vessel comprises a cylindrical tube which has a lot along its length, bounded by first and second parallel lips. the tube is oriented so that the first lip is level with the surface of the upper liq. phase. the angle at the centre corresp. to the slot is such that when the first lip is level with that surface, the second lip is above it. The tube is fitted at ites ends with means which allow it to turn freely about its axis between two fixed positions and ita has a partition along its length dividing it into an upper chamber and a lower chamber. The upper chamber is closed at the ends of the tube. The lower chamber is connected at its ends to pipes for discharging the recovered liq. layer. The edges of the partition are formed by two generating lines of the tube. One is formed by the first lip of the slot. The othe is situated below the surface of the liq. phase. the partition thus forms in the first chamber a channel capable of receiving the recovered liq. phase. The tube is fitted with a counterweight placed so that it can counter-balance the wt. of liq. received by the channel. The first channle communicates with the second chamber by a calibrated orifice made in the partition. The invention eliminates inconveniences of existing skimmers which can be oriented only by an operator, and which can be drowned and recover water as well as oil or can emerge so that oil accumulates on the surface and becomes oxidised forming a compact layer difficult to remove. The skimmer according to the invention is self-positioning and requires little human intervention.
FR7903706A 1979-02-14 1979-02-14 Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers Granted FR2449165A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7903706A FR2449165A1 (en) 1979-02-14 1979-02-14 Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7903706A FR2449165A1 (en) 1979-02-14 1979-02-14 Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers

Publications (2)

Publication Number Publication Date
FR2449165A1 true FR2449165A1 (en) 1980-09-12
FR2449165B1 FR2449165B1 (en) 1982-05-28

Family

ID=9221944

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7903706A Granted FR2449165A1 (en) 1979-02-14 1979-02-14 Skimmer used in decantation vessel - comprises tube turning freely about its axis, having longitudinal slot and partitioned into two longitudinal chambers

Country Status (1)

Country Link
FR (1) FR2449165A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330508A (en) * 1940-03-05 1943-09-28 Eli S Mccoll System for removing oil films from bodies of water
FR2174896A1 (en) * 1972-03-03 1973-10-19 Nordstjernan Rederi Ab
FR2208697A1 (en) * 1972-12-02 1974-06-28 Erdol Raffinerie Noustadt Gmbh
FR2342943A1 (en) * 1976-03-05 1977-09-30 Dreano Claude Oil-separating flotation device for waste water - with tubular draw-off gutter and adjustable slit
US4085049A (en) * 1976-02-04 1978-04-18 Norman John Reid Hartwick Skimming apparatus
FR2376081A2 (en) * 1976-12-28 1978-07-28 Mecanique Transport Variable height floating device for hydrocarbon recovery - after mixing with water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330508A (en) * 1940-03-05 1943-09-28 Eli S Mccoll System for removing oil films from bodies of water
FR2174896A1 (en) * 1972-03-03 1973-10-19 Nordstjernan Rederi Ab
FR2208697A1 (en) * 1972-12-02 1974-06-28 Erdol Raffinerie Noustadt Gmbh
US4085049A (en) * 1976-02-04 1978-04-18 Norman John Reid Hartwick Skimming apparatus
FR2342943A1 (en) * 1976-03-05 1977-09-30 Dreano Claude Oil-separating flotation device for waste water - with tubular draw-off gutter and adjustable slit
FR2376081A2 (en) * 1976-12-28 1978-07-28 Mecanique Transport Variable height floating device for hydrocarbon recovery - after mixing with water

Also Published As

Publication number Publication date
FR2449165B1 (en) 1982-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse