WO2011158773A1 - Method for recovery of oil spilled on sea surface and oil recovery vessel - Google Patents
Method for recovery of oil spilled on sea surface and oil recovery vessel Download PDFInfo
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- WO2011158773A1 WO2011158773A1 PCT/JP2011/063464 JP2011063464W WO2011158773A1 WO 2011158773 A1 WO2011158773 A1 WO 2011158773A1 JP 2011063464 W JP2011063464 W JP 2011063464W WO 2011158773 A1 WO2011158773 A1 WO 2011158773A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/32—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for collecting pollution from open water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
- B63B19/08—Ports or like openings in vessels' sides or at the vessels' bow or stern
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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
- E02B15/046—Collection of oil using vessels, i.e. boats, barges
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- 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
- This invention relates to a method for recovering oil spilled to the sea surface due to an accident such as an oil tanker or an oil well.
- the oil recovery method that has been widely used in the past is to separate the oil from the water by enclosing the contaminated sea surface with an oil fence, the recovery ship sucking up the oily water in the fence and adsorbing the oil to the mat. Most of them are recovered.
- the processing capacity is extremely limited, and is almost useless in a large-scale oil spill accident, for example, when tens of thousands or hundreds of thousands of tons of oil are spilled.
- This invention proposes an oil recovery method that can cope with a large-scale oil spill accident.
- the inlets are drilled in the outer plates of both sides of the hull front of the recovery ship, the attitude of the hull is maintained so that the inlets are at the sea level, and the sea surface is contaminated with oil, Floating oil is taken into the inboard tank together with seawater from the inflow port.
- the inflow port has an elongated shape in the front-rear direction, and this makes it possible to efficiently take in oily water.
- the oil can be recovered efficiently over a wide sea surface.
- the inlet Since the inlet is in a position that is difficult to see from the deck, a surveillance camera is attached to the member overhanging the ship, and observation is made of how oily water flows from the inlet. To adjust.
- the oily water taken into the ship is stored in the ship's oil tank, and when it is full, it is transferred to a land treatment facility.
- the collected oily water is set using multiple oil tanks on the ship, that is, the specific gravity separation of the oil and seawater is repeated, and the seawater with less oil content is discharged out of the ship, it is often found on land facilities. There is no need to return, and recovery efficiency increases.
- This oil recovery ship 1 is a modification of the existing 300,000 ton class crude oil / ore combined ship (VLOO).
- VLOO 300,000 ton class crude oil / ore combined ship
- an engine room 3 a pump room 4 and a residential area 5 are provided at the stern, a front of which is a cargo compartment 7, a cargo manifold 8 at the center of the upper deck, and a bow thruster at the bow. 9 is provided.
- the cargo compartment 7 is divided into five compartments by a horizontal partition.
- each section is provided with a ship side ballast tank 11 and a ship bottom ballast tank 13 on the inner side of the outer plate, and is surrounded by these ballast tanks.
- a cargo tank 17 is provided.
- the central tank 15 also serves as an ore pit, and a hatch cover 19 is provided on the upper deck.
- the above structure was originally provided as a crude oil / ore combined ship and is used as it is.
- long and narrow slit-like inlets 23 are formed in the front and rear of the two-sided outer plate immediately after the collision partition wall 21 in order to take the floating oil on the sea surface into the inboard tank.
- the inflow ports are provided between the frames so as to avoid the transverse frame and the long frame that support the hull skin.
- the length is about 4 meters.
- the inflow ports 23 are all at the same level, and are at a height of about 70% at a position lower than the full waterline. If the vertical width of each inflow port is too large, the ratio of the inflowing seawater will increase, so about 200 to 300 mm is preferable.
- the foremost ship-side ballast tank is partitioned to form a gathering tank 25 having a long shape along the inlet 23 in the front-rear direction.
- the upper part of the tank is a void space 27.
- a stop valve 29 is provided in the gathering tank 25, and the conduit 31 is led from the valve to the foremost ship side cargo tank 17, and the oil and water flowing into the gathering tank 25 from the outside through the inflow port 23 is supplied to the foremost ship side cargo. Try to drop it into the tank.
- the stop valve 29 can be opened and closed by the handle 35 from the upper deck via the reach rod 33.
- the ship can be used to transport crude oil or ore just by closing the inlet 23 with a cover.
- the cargo is unloaded promptly and the construction that removes the blockage of the inflow port 23 is carried out and headed to the sea area. In that case, it sails by making the bow draft shallow so that the inflow port 23 may be in a position sufficiently higher than the sea level.
- the seawater ballast is adjusted to deepen the draft of the bow, and the inlet 23 is just at the sea level as shown in FIG. To hold.
- the bow is made to approach the sea surface from which the oil has flowed out, and the floating oil flows into the gathering tank 25 from the inlet 23 together with the sea water.
- FIG. 3 shows the state of the recovery operation from above.
- the bow thruster 9 is used to swing the bow largely to the left and right so as to scoop out the oil that has spread widely on the sea surface.
- the oil and water taken in from the inlet 23 once enters the gathering tank 25 and is led to the foremost (first) ship side cargo tank 17 through the valve 29 and the conduit 31.
- the first ship-side cargo tank 17 is used by using the pump in the pump chamber 4.
- the oil and water accumulated inside is moved to the second ship side cargo tank 17 immediately after that.
- the received oil water is separated into oil and water over time, and the oily water accumulated in the upper part is transferred from the bulkhead valve 41 to the subsequent third ship side tank. (See FIG. 1).
- specific gravity separation is sequentially performed in the No. 3, No. 4 and No. 5 tanks, and the oil is gradually concentrated.
- the high-concentration oil that accumulates in the last 5th tank is finally landed at the land receiving facility. Seawater with low oil content is discharged out of the ship if circumstances permit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
Provided is an oil recovery method which can be readily employed even in the case of accidental marine oil spill over large areas. A recovery vessel (1) with a plurality of intakes (23) provided through the shell plating at a forward portion on both the broadsides of the hull is navigated across a sea surface contaminated with oil, the intakes (23) being shaped in an elongated slit in the fore and aft direction and arranged side by side in a line. The draft of the hull is controlled to maintain the intakes (23) at the level of the sea surface during recovery operations. The oil water mixture on the sea surface is drawn into the vessel through the intakes (23) of the recovery vessel (1) and then separated by specific gravity into oil and seawater in an oil water mixture reservoir tank (17).
Description
この発明は、オイルタンカーや油井などの事故で海面に流出した油を回収するための方法に関する。
This invention relates to a method for recovering oil spilled to the sea surface due to an accident such as an oil tanker or an oil well.
従来広く用いられている流出油の回収方法は、汚染海面をオイルフェンスで囲い、回収船がフェンスの中の油濁水を吸い上げ、油分をマットに吸着させるなどの方法で、水と分離して油を回収するものがほとんどである。しかしこのような方法では、処理能力がごく限られており、大規模な油流出事故、例えば何万、何十万トンもの油が流出した場合には、ほとんど無力である。
The oil recovery method that has been widely used in the past is to separate the oil from the water by enclosing the contaminated sea surface with an oil fence, the recovery ship sucking up the oily water in the fence and adsorbing the oil to the mat. Most of them are recovered. However, with such a method, the processing capacity is extremely limited, and is almost useless in a large-scale oil spill accident, for example, when tens of thousands or hundreds of thousands of tons of oil are spilled.
この発明は、大規模な油の海上流出事故にも対応できる、油の回収方法を提案するものである。
This invention proposes an oil recovery method that can cope with a large-scale oil spill accident.
この発明は、回収船の船体前部両舷の外板に流入口を穿設しておき、流入口が海面レベルに来るよう船体の姿勢を保持して、油汚染された海面に進入し、該流入口から海水と共に浮遊油を船内タンクに取り込むことを特徴とする。流入口は前後方向に細長い形状にすることが好ましく、こうすることで、油濁水を効率的に取り込むことができる。
In this invention, the inlets are drilled in the outer plates of both sides of the hull front of the recovery ship, the attitude of the hull is maintained so that the inlets are at the sea level, and the sea surface is contaminated with oil, Floating oil is taken into the inboard tank together with seawater from the inflow port. It is preferable that the inflow port has an elongated shape in the front-rear direction, and this makes it possible to efficiently take in oily water.
好ましくは、本船にバウスラスタを設け、油回収作業中、該スラスタを使って船首を左右に振るようするようにすれば、広い海面で能率よく油回収ができる。
Preferably, if a bow thruster is provided on the ship and the bow is swung from side to side using the thruster during the oil recovery operation, the oil can be recovered efficiently over a wide sea surface.
風が強くて波が高いときは、該流入口から流入するのは海水ばかりで、浮遊油がほとんど入ってこないという問題がある。そこで、そのような悪い海象においては、バウスラスタを使って船体を風向きに対しほぼ直角に保持して、波や風を船体でブロックする。こうすれば、船の風下側は風が弱まり波も小さくなる。この状態で、風下側の舷に設けられている流入口だけから油濁水を取り込むようにすれば、浮遊油の回収効率が向上する。
When the wind is strong and the waves are high, there is a problem that only the seawater flows in from the inlet and hardly contains floating oil. Therefore, in such bad sea conditions, a bow thruster is used to hold the hull almost at right angles to the wind direction, and waves and wind are blocked by the hull. This will reduce the wind and the waves on the lee side of the ship. In this state, if the oily water is taken in only from the inflow port provided on the leeward side, the floating oil recovery efficiency is improved.
流入口は甲板上からは見にくい位置にあるので、船外に張り出した部材に監視カメラを取りつけ、これで流入口から油濁水が流れ込む様子を観察し、流入口の高さが適切でないときは喫水を調節するようにする。
Since the inlet is in a position that is difficult to see from the deck, a surveillance camera is attached to the member overhanging the ship, and observation is made of how oily water flows from the inlet. To adjust.
船内に取り込んだ油濁水は、船内の油槽に貯め、満杯になったら、陸上の処理施設に移す。あるいは、取り込んだ油濁水を船内の複数の油槽を使ってセットリング、すなわち油と海水の比重分離を繰り返し行い、油分が少なくなった海水は船外に排出するようにすれば、陸上施設にたびたび戻る必要がなくなり、回収能率が上がる。
The oily water taken into the ship is stored in the ship's oil tank, and when it is full, it is transferred to a land treatment facility. Alternatively, if the collected oily water is set using multiple oil tanks on the ship, that is, the specific gravity separation of the oil and seawater is repeated, and the seawater with less oil content is discharged out of the ship, it is often found on land facilities. There is no need to return, and recovery efficiency increases.
この油回収船１は、既存の載貨重量３０万トン級の原油／鉱石兼用船（ＶＬＯＯ）に改装を加えたものである。図１の側面図に示すように、船尾に機関室３、ポンプ室４および居住区５を備え、その前方が貨物区画７になっており、上甲板中央にカーゴマニホールド８、船首部にはバウスラスタ９を備える。貨物区画７は横置隔壁によって５つの区画に仕切られている。各区画は、図２の横断面図に示すように、外板の内側に船側バラストタンク１１および船底バラストタンク１３が設けられ、それらのバラストタンクで囲まれる格好で、中央カーゴタンク１５および左右船側カーゴタンク１７が設けられている。中央タンク１５は、鉱石艙を兼ねており、上甲板にはハッチカバー１９が設けられている。以上の構造は、原油／鉱石兼用船としてもともと備えていたものであり、そのまま用いる。
This oil recovery ship 1 is a modification of the existing 300,000 ton class crude oil / ore combined ship (VLOO). As shown in the side view of FIG. 1, an engine room 3, a pump room 4 and a residential area 5 are provided at the stern, a front of which is a cargo compartment 7, a cargo manifold 8 at the center of the upper deck, and a bow thruster at the bow. 9 is provided. The cargo compartment 7 is divided into five compartments by a horizontal partition. As shown in the cross-sectional view of FIG. 2, each section is provided with a ship side ballast tank 11 and a ship bottom ballast tank 13 on the inner side of the outer plate, and is surrounded by these ballast tanks. A cargo tank 17 is provided. The central tank 15 also serves as an ore pit, and a hatch cover 19 is provided on the upper deck. The above structure was originally provided as a crude oil / ore combined ship and is used as it is.
油回収作業を行うために、新たに設けた構造および設備について次に説明する。図１および図２に示すように、衝突隔壁２１のすぐ後の両舷外板に、海面の浮遊油を船内タンクに取り込むため、前後に細長いスリット状の流入口２３を穿設する。流入口は、船体外板を支えるトランスバースフレームおよびロンジフレームを避けるように、それらフレームとフレームの間に設けられており、流入口の数は各舷あたり６本あり、１本の流入口の長さは４メートルほどである。流入口２３はすべて同レベルにあり、満載喫水線より低い位置で、その７０％ほどの高さにある。各流入口の上下幅は、あまり大きいと流入してくる海水の比率が大きくなるので、200ないし300mmほどが好ましい。
The structure and equipment newly provided for oil recovery work will be described below. As shown in FIGS. 1 and 2, long and narrow slit-like inlets 23 are formed in the front and rear of the two-sided outer plate immediately after the collision partition wall 21 in order to take the floating oil on the sea surface into the inboard tank. The inflow ports are provided between the frames so as to avoid the transverse frame and the long frame that support the hull skin. There are 6 inflow ports for each gutter, and there is one inflow port. The length is about 4 meters. The inflow ports 23 are all at the same level, and are at a height of about 70% at a position lower than the full waterline. If the vertical width of each inflow port is too large, the ratio of the inflowing seawater will increase, so about 200 to 300 mm is preferable.
流入口２３から流れ込んだ油水を受容するために図２に示すように、最前部の船側バラストタンクを仕切って、流入口２３に沿って前後に長い形状のギャザリングタンク２５を形成する。同タンクの上部はボイドスペース２７である。ギャザリングタンク２５の中に止弁２９を設け、同弁から導管３１を最前部の船側カーゴタンク１７に導き、船外から流入口２３を通ってギャザリングタンク２５に流れ込んだ油水を、最前部船側カーゴタンクに落とし込むようにする。止弁２９はリーチロッド３３を介して、上甲板上からハンドル３５で開閉できるようにする。
As shown in FIG. 2, in order to receive the oil and water flowing in from the inlet 23, the foremost ship-side ballast tank is partitioned to form a gathering tank 25 having a long shape along the inlet 23 in the front-rear direction. The upper part of the tank is a void space 27. A stop valve 29 is provided in the gathering tank 25, and the conduit 31 is led from the valve to the foremost ship side cargo tank 17, and the oil and water flowing into the gathering tank 25 from the outside through the inflow port 23 is supplied to the foremost ship side cargo. Try to drop it into the tank. The stop valve 29 can be opened and closed by the handle 35 from the upper deck via the reach rod 33.
本船は、流入口２３をカバー状のもので塞ぐだけで、原油ないし鉱石の輸送業務に当たることができる。どこかで油流出事故が起こって本船に油回収の要請があったときは、速やかに積荷を降ろし、流入口２３を塞いでいたものを取り除くなどの工事を行って、現場海域に向かう。その際は、流入口２３が海面より充分高い位置に来るよう、船首喫水を浅くして航海する。
The ship can be used to transport crude oil or ore just by closing the inlet 23 with a cover. When an oil spill accident occurs somewhere and the ship is requested to collect oil, the cargo is unloaded promptly and the construction that removes the blockage of the inflow port 23 is carried out and headed to the sea area. In that case, it sails by making the bow draft shallow so that the inflow port 23 may be in a position sufficiently higher than the sea level.
汚染海域に到着して油回収作業を始めるときは、図２に示すように、海水バラストを調節して船首喫水を深くし、図２に示すように流入口２３がちょうど海面の高さになるように保持する。この状態で、油が流出した海面に船首を進入させ、浮遊している油を海水と共に流入口２３からギャザリングタンク２５に流れ込ませる。
When the oil recovery operation is started after arriving at the contaminated sea area, as shown in FIG. 2, the seawater ballast is adjusted to deepen the draft of the bow, and the inlet 23 is just at the sea level as shown in FIG. To hold. In this state, the bow is made to approach the sea surface from which the oil has flowed out, and the floating oil flows into the gathering tank 25 from the inlet 23 together with the sea water.
流入口２３の位置が海面より高い位置にあると、流入口２３から海水も油も流入して来ない。逆に、流入口の位置が低過ぎて海中に没していると、流入口２３から流れ込んで来るのは海水ばかりで、油分が流れ込まない。したがって、船首部の喫水調整は大変重要であるが、流入口２３の様子は、上甲板にいる乗組員からはほとんど見えない。そこで、図２に鎖線で示すように、船外にアーム３７を張り出し、その先にテレビカメラ３９を取り付け、流入口から油水がうまく流れ込んでいるかどうか、船上からモニタできるようにするとよい。
If the position of the inlet 23 is higher than the sea level, neither seawater nor oil will flow from the inlet 23. On the other hand, if the position of the inlet is too low and is immersed in the sea, only the seawater flows from the inlet 23 and oil does not flow. Therefore, although the draft adjustment of the bow is very important, the state of the inflow port 23 is hardly visible to the crew on the upper deck. Therefore, as shown by a chain line in FIG. 2, it is preferable to extend an arm 37 outside the ship and attach a television camera 39 to the end of the arm 37 so that it can be monitored from the ship whether oil or water is flowing in from the inflow port.
油が大量に流出した直後の海面では、可燃性ガスが漂っている可能性が高い。船尾には、ボイラやエンジンを収めた機関室３があり、可燃ガスを吸い込むと爆発の危険がある。そこで、油の回収作業をするときは、油が浮いている海面に入るのは船首部だけにし、船尾部は油が浮いている海面には入らないようにすることが好ましい。小さな船では難しいが、本船は全長が約３３０メートルもあるので、このように油が浮いている海面から船尾を遠ざけた状態で油回収作業をすることは充分可能である。
There is a high possibility that flammable gas is drifting on the sea surface immediately after a large amount of oil spills. There is an engine room 3 that houses a boiler and an engine at the stern, and there is a danger of explosion if combustible gas is inhaled. Therefore, when the oil is collected, it is preferable that only the bow portion enters the sea surface where the oil is floating, and the stern portion does not enter the sea surface where the oil is floating. Although it is difficult for a small ship, the total length of this ship is about 330 meters, so it is possible to recover the oil with the stern away from the sea surface where the oil is floating.
油流出海面に船尾を入れないで油回収作業を効率よく進めるためには、バウスタスタ９をうまく活用するようにする。図３は回収作業の様子を上から見たものであり、バウスラスタ９を使って船首を左右に大きく振るようにして、海面に広く拡散した油を掬い取るようにする。
In order to efficiently carry out oil recovery without putting a stern into the oil spill sea surface, the Bausta Star 9 should be used well. FIG. 3 shows the state of the recovery operation from above. The bow thruster 9 is used to swing the bow largely to the left and right so as to scoop out the oil that has spread widely on the sea surface.
風が強くなって波高が大きくなると、波の頂部は流入口２３より高くなり、波の谷部は流入口より低くなってしまう。こうなると、流入口２３から流れ込むのは海水ばかりで、海水の上に浮遊している油がほとんど流れ込まなくなる。そのような悪い海象では、図４に示すように、バウスラスタ９を使って船体を風向に対しほぼ直角に保持し、波や風を船体でブロックして、船の風下側に波風の穏やかな領域を作るようにする。この状態で、波風の穏やかな風下側（図４では右舷）の流入口２３だけを使って油濁水を取り込むようにする。こうすれば、油分の回収効率を向上させることができる。なお、この場合、波風の大きな風上側の舷（左舷）の流入口２３から海水が流入しないようにする必要があるが、これは、左舷ギャザリングタンク２５に設けられている弁２９を閉鎖することで達成される。
When the wind gets stronger and the wave height increases, the top of the wave becomes higher than the inlet 23 and the valley of the wave becomes lower than the inlet. In this case, only the seawater flows from the inlet 23, and the oil floating on the seawater hardly flows. In such a bad sea condition, as shown in FIG. 4, a bow thruster 9 is used to hold the hull almost at right angles to the wind direction, and waves and winds are blocked by the hull. To make. In this state, only the inflow port 23 on the leeward side (starboard in FIG. 4) where the wave wind is gentle is used to take in the oily water. In this way, the oil recovery efficiency can be improved. In this case, it is necessary to prevent the seawater from flowing in from the inflow port 23 on the upwind side (port) on the windward side with a large wave wind, which is to close the valve 29 provided in the portside gathering tank 25. To be achieved.
流入口２３から取り込んだ油水はいったん、ギャザリングタンク２５に入り、弁２９および導管３１を経て、最前部（１番目）の船側カーゴタンク１７に導かれる。このタンクの液面が上がって流入口２３のレベルに近づくと、外からの油水が流入口２３に流入しなくなってしまうので、ポンプ室４内のポンプを使って、一番目の船側カーゴタンク１７内に溜まった油水を、そのすぐ後の２番船側カーゴタンク１７に移すようにする。
The oil and water taken in from the inlet 23 once enters the gathering tank 25 and is led to the foremost (first) ship side cargo tank 17 through the valve 29 and the conduit 31. When the level of the tank rises and approaches the level of the inlet 23, oil water from the outside does not flow into the inlet 23, so the first ship-side cargo tank 17 is used by using the pump in the pump chamber 4. The oil and water accumulated inside is moved to the second ship side cargo tank 17 immediately after that.
２番目の船側カーゴタンク１７では、受け入れた油水を時間をかけて油と水に比重分離させ、上の方に溜まった油分の多い油水は、隔壁弁４１からその後の３番目の船側タンクに移される（図１参照）。同様にして、３番、４番、５番の各タンクでも順次、比重分離が行われて徐々に油分が濃縮されていく。最後の５番目のタンクに溜まる高濃度の油水は、最終的には陸上の受入施設に陸揚げされる。油分が少なくなった海水は、状況が許せば、船外へ排出する。
In the second ship side cargo tank 17, the received oil water is separated into oil and water over time, and the oily water accumulated in the upper part is transferred from the bulkhead valve 41 to the subsequent third ship side tank. (See FIG. 1). Similarly, specific gravity separation is sequentially performed in the No. 3, No. 4 and No. 5 tanks, and the oil is gradually concentrated. The high-concentration oil that accumulates in the last 5th tank is finally landed at the land receiving facility. Seawater with low oil content is discharged out of the ship if circumstances permit.
１ 油回収船
９ バウスラスタ
１５ 中央カーゴタンク
１７ 船側カーゴタンク（油濁水貯留タンク）
２３ 流入口
２５ ギャザリングタンク
３９ カメラ
４１ 隔壁弁 1Oil recovery ship 9 Bow thruster 15 Central cargo tank 17 Ship side cargo tank (oil spilled water storage tank)
23Inlet 25 Gathering tank 39 Camera 41 Bulkhead valve
９ バウスラスタ
１５ 中央カーゴタンク
１７ 船側カーゴタンク（油濁水貯留タンク）
２３ 流入口
２５ ギャザリングタンク
３９ カメラ
４１ 隔壁弁 1
23
Claims (9)
- 船体前部両舷外板に流入口を穿設した油回収船を、該流入口が海面レベルの高さになるよう船体の姿勢を保持しながら、油で汚染された海面に進入させ、海面上に浮遊する油濁水を該流入口から船内に取り込むこと特徴とする、海面に流出した油の回収方法。 An oil recovery ship with an inlet in the outer skin of both hull fronts is made to enter the sea surface contaminated with oil while maintaining the attitude of the hull so that the inlet is at sea level. A method for recovering oil that has flowed out to the sea surface, wherein oily water floating above is taken into the ship through the inflow port.
- 該流入口が船体の前後方向に細長く形成されている、請求項１に記載の海面に流出した油の回収方法。 The method for collecting oil spilled on the sea surface according to claim 1, wherein the inflow port is formed elongated in the front-rear direction of the hull.
- 該油回収船がバウスラスタを有し、該スラスタを使って船首を左右に振って油回収作業を行うことを特徴とする、請求項１に記載の海面に流出した油の回収方法。 The method for recovering oil spilled on the sea surface according to claim 1, wherein the oil recovery ship has a bow thruster, and the oil recovery operation is performed by shaking the bow left and right using the thruster.
- 該油回収船がバウスラスタを有し、該スラスタを使って船体を風向に対しほぼ直角に保持し、その状態で、風上側の該流入口は使わず、風下側の該流入口を使って油回収作業を行うことを特徴とする、請求項１に記載の海面に流出した油の回収方法。 The oil recovery ship has a bow thruster, and the thruster is used to hold the hull substantially perpendicular to the wind direction. In this state, the inlet on the windward side is not used, and the oil inlet is used on the leeward side. The method for recovering oil spilled on the sea surface according to claim 1, wherein the recovery operation is performed.
- 該流入口から油濁水が流れ込む状態を、船外に張り出した部材に取り付けたカメラを使って船上からモニタすることを特徴とする請求項１に記載の海面に流出した油の回収方法。 The method for recovering oil spilled to the sea surface according to claim 1, wherein the state in which the oily water flows from the inflow port is monitored from the shipboard using a camera attached to a member projecting out of the ship.
- 船内取り込んだ油濁海水を、船内油濁水貯留タンク内で油と海水をに比重分離することを特徴とする請求項１に記載の海面に流出した油の回収方法。 2. The method for recovering oil spilled to the sea surface according to claim 1, wherein the oily seawater taken in the ship is separated by gravity in a shipboard oily water storage tank.
- 船体前部両舷に設けられるギャザリングタンクと、海面に浮かぶ油濁水を該ギャザリングタンク内に取り込むために船体外板に穿設された流入口と、該ギャザリングタンクに連通する油濁水貯留タンクから成る油回収船。 A gathering tank provided on both sides of the front part of the hull, an inlet formed in the outer plate of the hull for taking in the oily water floating on the sea surface into the gathering tank, and an oily water storage tank communicating with the gathering tank Oil recovery ship.
- 該流入口が船体の前後方向に細長い形状を有する請求項７に記載の油回収船。 The oil recovery ship according to claim 7, wherein the inlet has an elongated shape in the longitudinal direction of the hull.
- 船体にバウスラスタを備えている請求項７に記載の油回収船。 The oil recovery ship according to claim 7, wherein the hull is provided with a bow thruster.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-134687 | 2010-06-14 | ||
| JP2010134687 | 2010-06-14 |
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| WO2011158773A1 true WO2011158773A1 (en) | 2011-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/063464 WO2011158773A1 (en) | 2010-06-14 | 2011-06-13 | Method for recovery of oil spilled on sea surface and oil recovery vessel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9145308B2 (en) | 2012-01-13 | 2015-09-29 | Fluor Technologies Corporation | Oil spill cleanup from water |
| JP2020157202A (en) * | 2019-03-25 | 2020-10-01 | 華南理工大学 | Site control facility for treating petroleum pollution water area |
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| JP2020157202A (en) * | 2019-03-25 | 2020-10-01 | 華南理工大学 | Site control facility for treating petroleum pollution water area |
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