WO2018074201A1 - 油膜回収装置及び油膜回収方法 - Google Patents

油膜回収装置及び油膜回収方法 Download PDF

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Publication number
WO2018074201A1
WO2018074201A1 PCT/JP2017/035770 JP2017035770W WO2018074201A1 WO 2018074201 A1 WO2018074201 A1 WO 2018074201A1 JP 2017035770 W JP2017035770 W JP 2017035770W WO 2018074201 A1 WO2018074201 A1 WO 2018074201A1
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WO
WIPO (PCT)
Prior art keywords
water
oil
oil film
suction
water surface
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.)
Ceased
Application number
PCT/JP2017/035770
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English (en)
French (fr)
Japanese (ja)
Inventor
成義 村上
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.)
Nihonsokuki KK
Original Assignee
Nihonsokuki KK
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 Nihonsokuki KK filed Critical Nihonsokuki KK
Priority to CN201780014700.8A priority Critical patent/CN108713001B/zh
Publication of WO2018074201A1 publication Critical patent/WO2018074201A1/ja
Priority to US16/386,616 priority patent/US10550536B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/10—Devices for removing the material from the surface
    • E02B15/106—Overflow skimmers with suction heads; suction heads
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/045—Separating means for recovering oil floating on a surface of open water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/048—Oil collectors moved over the water skimming the water surface
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

Definitions

  • the present invention relates to an oil film recovery apparatus and an oil film recovery method for efficiently recovering an oil film floating on a water surface.
  • the mainstream has adopted a method in which an oil film is drawn under the surface of the water by a submersible pump or a suction pump (pump for sucking water).
  • the oil film is sucked together with the surface water by disposing the suction port of the suction hose at a position close to the water surface in the water and sucking it with the submersible pump or the suction pump.
  • the sucked oil / water mixture is stored in an oil / water separation tank, separated into oil and water by various oil / water separators such as the cyclone method and corrugated method, the water is drained as it is, and the oil is recovered and reused. .
  • the inventor does not collect the oil film floating on the water surface from the water as described in Patent Document 1, but collects the oil film by sucking it from above the water surface.
  • An oil film recovery method and an oil film recovery device were proposed. This is because the suction port at the tip of the suction hose faces downward from 5 to 200 mm above the surface of the water, and the oil film is sucked together with air and water from the suction port of the suction hose by a suction mechanism such as a suction pump. It was something to be collected.
  • Patent Document 2 discloses a spilled oil recovery device in which a suction port of a suction pipe of an oil suction device is disposed above the water surface, and the oil floating on the water surface is sucked and recovered from above the water surface. ing.
  • the pump in the suction mechanism in the oil film recovery method and the oil film recovery apparatus described in Patent Document 1 is a suction pump that mainly sucks water as before. Therefore, if the pump is not filled with water, the suction operation cannot be performed, so that the oil film is also sucked and collected together with a large amount of surface water, and the ratio of oil in the collected oil-water mixture is sufficiently high. I could't increase it.
  • a vacuum pump vacuum pump
  • the vacuum pump is a pump for exhausting gas from the container to obtain a vacuum or a low pressure state close to that. Therefore, even if it is operated with the suction port opened to the atmosphere, the inside of the suction tube does not become close to a vacuum state, so that suction becomes impossible immediately. That is, the operation time is as short as about a minute.
  • the present invention has been made to solve the above-described problem, and when collecting an oil film floating on the water surface, the amount of water sucked is greatly reduced so that the oil film can be efficiently recovered, and for a long time.
  • the purpose is to enable continuous operation.
  • the oil film recovery apparatus has a suction hose and a floating support mechanism that supports the tip of the suction hose so that the suction port maintains a predetermined distance above the water surface,
  • a turbo fan having a turbo impeller in a casing having a suction port and a delivery port, the base end of the suction hose being connected to the suction port, a motor disposed away from the turbo fan, and the motor
  • a belt transmission mechanism for rotating the impeller to rotate the impeller, and by the suction force of the turbo fan, the oil film floating on the water surface from the suction port through the suction hose is It is characterized by being sucked and collected together with the air and surface water near the water surface.
  • the suction force of the turbo fan is desirably 2 kPa or more.
  • the motor may be a brushless motor.
  • the oil film recovery method supports the tip of the suction hose so that the suction port maintains a predetermined distance above the water surface, and the suction hose is supported by a turbo fan having a suction force of 2 kPa or more.
  • a turbo fan having a suction force of 2 kPa or more.
  • the rotational force of a motor arranged away from the turbofan is transmitted to the turbofan via a belt transmission mechanism to rotationally drive the impeller of the turbofan.
  • the oil film recovery apparatus and the oil film recovery method of the present invention when the oil film floating on the water surface is recovered, the amount of water sucked can be greatly reduced, and the oil film can be recovered efficiently. Moreover, continuous operation for a long time is possible.
  • FIG. 3 is a perspective view of a turbo impeller indicated by a broken line in FIG. 2. It is a top view of the floating support mechanism in FIG. It is sectional drawing which shows an example of the oil-water separation tank in FIG.
  • FIG. 1 is a schematic side view showing a usage state of an embodiment of an oil film recovery apparatus according to the present invention.
  • reference numeral 100 denotes water such as a river, sea, lake, swamp, pond, or pool, and an oil film floats on the water surface 101.
  • Reference numeral 200 denotes a land in contact with the water.
  • the oil film recovery apparatus includes at least a suction hose 1 and a floating support mechanism 2, a turbo fan 3, a motor 4, and a belt transmission mechanism 5.
  • the suction hose 1 is supported by the floating support mechanism 2 so that the suction port 1d of the distal end portion 1a maintains a predetermined distance above the water surface 101.
  • the turbofan 3 includes a turbo impeller 32 in a casing 31 having a suction port 31a and a delivery port 31b, and a base end 1b of the suction hose 1 at the suction port 31a. Is connected.
  • the motor 4 is disposed apart from the turbo fan 3, transmits the rotational force to the turbo fan 3 via the belt transmission mechanism 5, and rotationally drives the impeller 32.
  • the suction force of the turbo fan 3 is desirably 2 kPa (Pascal) or more.
  • air is released into the atmosphere and oil and water are separated from the mixed fluid of air, oil and water sent from the outlet 31 b of the turbofan 3 through the delivery pipe 10.
  • An oil / water separation tank 6 is provided as the oil / water separation means. The water separated in the oil / water separation tank 6 is discharged through the drain pipe 11 and returned to the water 100 such as a river.
  • the oil film recovery device will be described in more detail.
  • a gantry 8 and an oil / water separation tank 6 are disposed on a base 7 installed on the land 200, and the turbofan 3, the motor 4, and the belt transmission are disposed on the gantry 8.
  • a mechanism 5 is installed.
  • the suction hose 1 is a tubular member in which, for example, a distal end portion 1a and a base end portion 1b are formed of a rigid body such as metal or hard resin, and the intermediate portion 1c is formed of a flexible body such as soft resin or rubber.
  • the intermediate portion 1c of the suction hose 1 is supported by a support column 9 extending obliquely upward from the lower portion of the gantry 8.
  • the floating support mechanism 2 is a mechanism that supports the tip 1a of the suction hose 1 so that the suction port 1d maintains a predetermined distance above the water surface 101.
  • a frame-like support frame 21 that supports the distal end portion 1 a of the suction hose 1 and four cylindrical floats for floating the support frame 21 on the water surface 101. 22 (floating element), and a connecting portion 23 for connecting each float 22 and the support frame 21 to each other.
  • the suction hose 1 is penetrated and supported by the center portion 21a of the support frame 21, and a height adjusting mechanism 25 is provided between the tip portion 1a and the center portion 21a.
  • the height adjustment mechanism 25 is, for example, a rack and pinion mechanism, and makes it possible to adjust the distance (height) of the suction port 1d of the suction hose 1 from the water surface 101 to 5 to 200 mm.
  • the height adjusting mechanism is not limited to the rack and pinion mechanism, and various mechanisms such as an expansion / contraction mechanism and a cam sliding mechanism can be employed.
  • a height adjusting mechanism may be provided in the connecting portion 23 that connects the float 22 and the support frame 21.
  • the adjustment range is not limited to 5 to 200 mm.
  • the structure of the floating support mechanism 2 can be variously changed, and the float 22 may be a cylindrical body or sphere of resin or the like having a specific gravity smaller than that of the water 100, or a metal hollow body.
  • the shape and material of the support frame 21 are also arbitrary.
  • the height from the water surface 101 to the suction port 1d of the suction hose 1 is the state of the water surface, the area of the suction area, the height from the water surface to the turbo fan 3, the state of the water surface wave and flow velocity, the suction force of the turbo fan 3 ( Taking into account the horsepower, etc., the operator decides and adjusts at the site. For example, when collecting a small amount of oil film in a place where the water surface is quiet, the height of the suction port 1d from the water surface 101 is set to about 5 mm, but a large amount of oil spilled due to a tanker accident or the like is collected with a large horsepower. In such a case, it should be about 200 mm.
  • the turbo fan 3 is a blower (blower) having a turbo-shaped impeller 32 in a casing 31 having a suction port 31 a and a delivery port 31 b, and a rotation fixed to the center of the impeller 32.
  • the shaft 33 protrudes from the back surface of the casing 31.
  • turbo-shaped impellers 32 For example, as shown in FIG. 3, the disk portion 32a and the ring portion 32b face each other in parallel and are curved in the radial direction therebetween. A large number of blades 32c are fixed radially.
  • the rotating shaft 33 is fixed to the center of the disk portion 32a by a shaft fixing portion 32d.
  • a general turbofan is provided with a motor integrally, and the rotating shaft of the impeller is directly connected to the rotating shaft of the motor.
  • the turbo fan 3 is not provided with an integrated motor, and the motor 4 is disposed at a position away from the turbo fan 3, and the rotation shaft 41 thereof is parallel to the rotation shaft 33 of the turbo fan 3.
  • the motor 4 is an electric motor for driving the turbofan 3, and it is desirable to use a brushless motor capable of continuous operation for 10,000 hours to 30,000 hours or more.
  • the number of revolutions is equivalent to the rated number of revolutions of the turbofan 3 and is about 3700 revolutions per minute.
  • the wattage is a large load variation, so the wattage is 1.5 times the wattage required for normal calculations. It is desirable to make the output as large as possible.
  • the belt transmission mechanism 5 is a transmission mechanism for rotating the impeller 32 by transmitting the rotational force of the motor 4 to the turbo fan 3.
  • the belt transmission mechanism 5 in this embodiment includes a pulley 51 that is fixed to the rotation shaft (spindle) 41 of the motor 4 through the center hole and a center hole in the rotation shaft 33 of the turbofan 3.
  • An endless belt 53 is bridged between the pulley 52 which is fixed by passing therethrough.
  • the pulleys 51 and 52 are made of, for example, metal or reinforced resin, and the belt 53 is made of, for example, rubber, leather, resin, cloth, or a composite material thereof.
  • a conventional turbofan is a device for sucking and sending a gas such as air and is not assumed to be mixed with liquid, and is not waterproof. Therefore, when a turbo fan directly connected to a motor as in the prior art is used as a turbo fan for carrying out the present invention, water and oil, which are liquids, are sucked together with air, so that it leaks and enters the motor. This is due to the failure of rotation.
  • the turbo fan 3 and the motor 4 are arranged apart from each other, the rotational force of the motor 4 is transmitted to the turbo fan 3 by the belt transmission mechanism 5, and the impeller 32 is rotationally driven. Thus, even if the turbo fan 3 sucks liquid together with air, the motor 4 can be continuously operated for a long time without failure.
  • the oil / water separation tank 6 allows a mixed fluid of air, oil, and water sent from the delivery port 31b of the turbofan 3 to flow in through the delivery pipe 10 connected to the delivery port 31b, and the air flows from the mixed fluid into the atmosphere.
  • the oil and water that are liquids are separated by the difference in specific gravity.
  • the oil-water separation means is not limited to this oil-water separation tank, and various types of conventionally used methods such as a centrifugal separation method and a filtration filter method can be used.
  • the motor 4 is started by supplying power, and the impeller 32 is rotated at a high speed together with the rotating shaft 33 of the turbofan 3 through the belt transmission mechanism 5 by the driving force.
  • the turbo fan 3 discharges the air in the casing 31 to generate a strong suction force on the suction port 31 a side, and sucks the air on the water surface 101 from the suction port 1 d through the suction hose 1.
  • the oil film floating on the water surface 101 and the surface water are mixed with air and sucked.
  • the suction force of the turbo fan is measured with a vacuum gauge when the suction port 31a of the turbo fan 3 is sealed and the impeller 32 is rotated at the rated speed (for example, 3700 revolutions per minute). It is the value.
  • the required suction force varies considerably depending on conditions such as the length of the suction hose 1 and the height of the suction port 1d from the surface of the water. Therefore, the turbofan suction force is 5 to 6 kPa for practical use. Good.
  • the mixed fluid of air, oil and water delivered from the delivery port 31b of the turbofan 3 is sent to the oil / water separation tank 6 through the delivery pipe 10, where the air is released into the atmosphere, and the oil and water which are liquids. Are separated almost completely in the process of passing through a plurality of internal separation tanks due to the difference in specific gravity.
  • the water separated in the oil / water separation tank 6 is discharged through the drain pipe 11 and returned to the water 100 such as a river.
  • the separated oil can be recovered and reused.
  • the oil-water separation layer 6 which is the oil-water separation means in this embodiment is configured as shown in FIG.
  • a hollow rectangular parallelepiped outer casing 60 is partitioned by partition walls 61a, 61b, and 61c provided at substantially equal intervals in the longitudinal direction, and the first layer 60A, the second layer 60B, the third layer 60C, and the fourth layer 60D is formed, and the height of the first layer 60A is slightly higher than the other layers.
  • the partition walls 61a, 61b, 61c are respectively provided with through holes 62a, 62b, 62c at the same height position, and the base end portion of the drain pipe 11 is located at substantially the same height position of the rear end wall 60a of the outer casing 60. Are connected through.
  • each connecting hole 62a, 62b, 62c and the connection port of the drainage pipe 11 From the upper part of each connecting hole 62a, 62b, 62c and the connection port of the drainage pipe 11 to the bottom surface at intervals in parallel with the surface on the front layer side of each partition wall 61a, 61b, 61c and the inner surface of the rear end wall 60a, respectively.
  • Each partition plate 63 is provided so as to partition up to a predetermined height position.
  • a window 64 in which a light shielding armor frame is fitted is provided on each peripheral wall of the upper portion of the first layer 60A portion of the outer casing 60, and the delivery tube 10 is inserted through the upper wall surface.
  • Small windows 65 fitted with light-shielding armor frames are also provided on the upper side walls of the second layer 60B, the third layer 60C, and the fourth layer 60D.
  • the armor frame is provided to prevent rain and debris from entering the layer and also to prevent the generation of algae by blocking external light.
  • Oil recovery holes 66 are provided at positions slightly lower than the through holes 62a, 62b, and 62c on the side walls of the first layer 60A, the second layer 60B, and the third layer 60C of the outer casing 60, respectively.
  • a mixed fluid of air, oil, and water flows from the turbo fan 3 through the delivery pipe 10 into the upper portion of the first layer 60A, and most of the air passes through the window 64. Released into the atmosphere.
  • Water Wa and oil Oi which are liquids, accumulate in the first layer 60A, but water Wa having a large specific gravity mainly accumulates in the lower part, and oil Oi having a small specific gravity mainly floats and accumulates in the upper part.
  • water Wa (the oil Oi is somewhat dispersed) below the first layer 60A enters the inside of the partition plate 63 as indicated by an arrow, and flows into the second layer 60B from the through hole 62a.
  • the oil contained therein floats above the second layer 60B, and the lower water flows into the third layer 60C through the through holes 62b. If air is contained, it is discharged into the atmosphere from the small window 65.
  • the water component in the layers 60A, 60B, and 60C containing only a little oil is allowed to flow into the next layer through the through holes 62a, 62b, and 62c, and the water in the fourth layer 60D is allowed to flow. Then, it is sent from the lower part to the upper drain pipe 11 through the inside of the partition plate 63.
  • the oil floating above the first layer 60A, the second layer 60B, and the third layer 60C flows out from the oil recovery hole 66 and is recovered by a pipe (not shown).
  • the amount of oil outflow from each oil recovery hole 66 may be adjusted by a valve or the like in accordance with the state of oil accumulation in each layer. If water still remains in the recovered oil, it is preferable to further remove the water by oil / water separation.
  • the oil film recovery rate is higher than that of the conventional oil film recovery apparatus and oil film recovery method that draws and sucks the oil film from the underwater side near the water surface using a submersible pump.
  • the ratio of water to oil in the sucked oil / water mixture is reduced to 1/3 to 1/4 of the conventional one, and the oil / water separation tank can be reduced to 1/2 to 1/3.
  • the production cost of the entire system including the oil / water separation tank can be reduced to 1 ⁇ 2 or less.
  • the oil film recovery apparatus and the oil film recovery method according to the present invention are used to treat wastewater containing oil from oil refineries, various plant companies, steel mills, thermal power plants, paper companies, etc., and oil spill accidents in rivers and seas. It is extremely effective for countermeasures.
  • the suction hose 1 may be provided with a net such as a wire mesh for preventing foreign matter suction attached to the floating support mechanism 2 in the suction port 1d or around the suction port 1d.
  • each part other than the suction hose 1 and the floating support mechanism 2 of the oil film recovery device is placed on the base 7 provided on the land 200.
  • these can be mounted on vehicles such as automobiles so that they can move along rivers, pools, etc., or placed on a watercraft such as a ship or boat, where the oil film floats on the water. You can also move freely.
  • the oil film recovery apparatus and oil film recovery method according to the present invention are used to treat wastewater containing oil in oil refineries, various plant companies, steel mills, thermal power plants, paper companies, etc. It is extremely effective when used for.
  • suction hose 1a distal end portion 1b: base end portion 1c: intermediate portion 1d: suction port 2: floating support mechanism 3: turbofan 4: motor 5: belt transmission mechanism 6: oil / water separation tank 7: base 8: mount 9 : Strut 10: Delivery pipe 11: Drain pipe 21: Support frame 21a: Center part 22: Float (floating element) 23: Connection part 25: Height adjustment mechanism 31: Casing 31a: Inlet 31b: Outlet 32: Impeller 32a : Disc part 32b: ring part 32c: blade 32d: shaft fixing part 33: rotating shaft of turbofan 41: rotating shaft of motor 51, 52: pulley 53: belt 60: outer casing 60A: first layer 60B: first 2 layers 60C: 3rd layer 60D: 4th layer 61a, 61b, 61c: partition wall 62a, 62b, 62c: through hole 63: partition plate 64: window fitted with armor frame 5: fitting the armor frame small window 66: the oil recovery hole 100: water (riv

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Floating Material (AREA)
PCT/JP2017/035770 2016-10-17 2017-10-02 油膜回収装置及び油膜回収方法 Ceased WO2018074201A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780014700.8A CN108713001B (zh) 2016-10-17 2017-10-02 油膜回收装置和油膜回收方法
US16/386,616 US10550536B2 (en) 2016-10-17 2019-04-17 Oil film recovery apparatus and oil film recovery method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016203844A JP6392290B2 (ja) 2016-10-17 2016-10-17 油膜回収装置及び油膜回収方法
JP2016-203844 2016-10-17

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US16/386,616 Continuation US10550536B2 (en) 2016-10-17 2019-04-17 Oil film recovery apparatus and oil film recovery method

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WO2018074201A1 true WO2018074201A1 (ja) 2018-04-26

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US (1) US10550536B2 (enExample)
JP (1) JP6392290B2 (enExample)
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WO2020206556A1 (en) * 2019-04-12 2020-10-15 Cameron Farms Hutterite Colony Fluid pumping apparatus and methods of use
CN110963546A (zh) * 2019-12-27 2020-04-07 江苏旭龙水务有限公司 一种浮油收集设备
CN111389229B (zh) * 2020-04-29 2020-12-04 新沂市锡沂高新材料产业技术研究院有限公司 一种便于更换油水分离膜的油水分离装置
CN113735217B (zh) * 2020-05-28 2022-11-18 中国石油化工股份有限公司 一种危化品泄漏浮油应急回收装置
CN111802313A (zh) * 2020-07-22 2020-10-23 周占磊 一种养殖业池塘清洁装置
CN112412689B (zh) * 2020-11-20 2022-07-26 苏州琦谷佳科技有限公司 波浪能捕获装置
US11478729B2 (en) * 2021-01-26 2022-10-25 Ross Davis Separation apparatus, system and method of use
CN114411654A (zh) * 2022-01-06 2022-04-29 严鑫柯 一种海面石油泄漏回收装置
CN115569408B (zh) * 2022-08-29 2025-01-28 北京交通大学 油水分离装置
CN116854189A (zh) * 2023-08-01 2023-10-10 徐州工程学院 一种用于修复油膜污染水体的装置

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