JP3977535B2 - Oil recovery device - Google Patents

Oil recovery device Download PDF

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Publication number
JP3977535B2
JP3977535B2 JP37550298A JP37550298A JP3977535B2 JP 3977535 B2 JP3977535 B2 JP 3977535B2 JP 37550298 A JP37550298 A JP 37550298A JP 37550298 A JP37550298 A JP 37550298A JP 3977535 B2 JP3977535 B2 JP 3977535B2
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Japan
Prior art keywords
oil recovery
oil
pump
fixture
recovery
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JP37550298A
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JP2000177682A (en
Inventor
啓一 新田
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、海上に流出した油を回収する油回収装置に関する。
【０００２】
【従来の技術】
オイルタンカーの事故等により海上に流出した油は、海洋汚染の発生を防ぐため早急に回収しなければならない。この流出油の回収には種々の手段が構じられている。
従来より効果的な油回収装置の一つとして、ポンプで吸引し、漉器で漉して回収する船舶搭載型の油回収装置が使用されている。
【０００３】
図３、図４は漉器を使用する従来の船舶搭載型の油回収装置のラインを示すものであり、以下にその概要を説明する。
１は油回収器であって、海面に没水され、海面上層に浮遊する流出油を吸引し、回収するもので、他の海上浮遊物の吸込みを防ぐため、格子構造等により所定寸法以下のもののみ吸引するようになっている。
【０００４】
２、３は漉器であって、前記油回収器１と回収配管Ａにより並列に連結されており、切替え使用される。また、スクリーンを内蔵しており、ここでは後段のポンプに通し得ないゴミを漉して吸引するようになっている。
４、５は油回収ポンプであって、前記漉器２、３に対して回収配管Ｂにより並列に連結されており、２基同時に、あるいは、一方のメンテナンス等運転休止時には、他の一方で吸引できるようになっている。
【０００５】
６は油回収槽であって、油回収ポンプ４、５の吐出側に回収配管Ｃで連結されており、回収油を貯蔵する。
７はゴミ回収箱であって、漉器２、３の上流側と逆洗配管Ｄを介して連結されており、漉器２、３で漉されたゴミが回収される。また、該ゴミ回収箱７は油回収槽６とも排水配管Ｅで連結されており、漉器２、３の目詰まりを逆洗するときやゴミを回収する際に使用する洗浄水を油回収槽６に送給し、同油回収槽６に貯蔵する。
【０００６】
８は逆洗用ポンプであって、漉器２、３の下流側に逆洗配管Ｆで連結されており、海水吸入箱９から海水を吸入し、漉器２、３の下流側に海水を送給する。
図中ａ、ｂ、ｃ、ｄは回収配管上、漉器２と３の前後に挿設された切替え弁であり、ｅ、ｆ、ｇ、ｈは回収配管上、油回収ポンプ４と５の前後に挿設された切替え弁であり、ｉ、ｊ、ｋ、ｌは逆洗配管上、漉器２と３の前後に挿設された切替え弁である。
【０００７】
このような構成であるから、いま、図３に示すように切替え弁ａ、ｂおよびｅ、ｆ、ｇ、ｈを開き、切替え弁ｃ、ｄおよびｉ、ｊ、ｋ、ｌを閉じた状態とし、油回収ポンプ４と５を運転すると、流出油は油回収器１から吸引され、漉器２を径て、油回収ポンプ４と５を通り、油回収槽６に回収されることになる。このとき、漉器３は切替え運転のために待機している状態にある。
【０００８】
漉器２のスクリーンが目詰まりしたり、漉器２の上流側にゴミが一杯に詰まった場合には、切替え弁ｃ、ｄを開き、同時に切替え弁ａ、ｂを閉じて切替え運転を行なう。つまり、流出油は油回収器１から漉器３を径て、油回収ポンプ４、５に吸引され、継続して油回収槽６に回収される。
【０００９】
このとき、漉器２は汚れた状態にあるから、切替え弁ｉ、ｊを開き、逆洗用ポンプ８を運転して逆洗を行なう。逆洗用ポンプ８は海水吸入箱９より海水を吸入し、漉器２に圧送するので、漉器２のスクリーンの目詰まりは逆洗され、漉器２の上流側に詰まったゴミは洗浄水に伴われて、ゴミ回収箱７に送給回収される。図４は切替え運転をし、逆洗を行なっている状態である。
【００１０】
漉器２の洗浄が完了したら、切替え弁ｉ、ｊを閉じて、漉器２は次の切替え運転に備えて待機することになる。
また、ゴミ回収箱７には底にスクリーンが設けられており、ゴミ回収箱７にはゴミのみが回収され、洗浄水はその底部より排水配管Ｅを介し油回収槽６に送給され、回収油と一緒に貯蔵される。
【００１１】
【発明が解決しようとする課題】
上述のごとく従来型の構成では、逆洗用ポンプ８を設け、海水を洗浄水として使用している。
このため、逆洗のためだけにポンプを設けなければならないこと、および、洗浄水として使用する大量の海水が油回収槽に溜り、回収油の濃度を下げてしまい、結果的に流出油の回収効率を下げてしまうと云う不都合があった。
【００１２】
本発明は、叙上の欠点に鑑みなされたものであって、油回収ポンプを逆洗用に兼用し、回収排水を洗浄水として利用することにより、油回収装置のコストダウンを図ると共に、流出油の回収効率を向上させることを目的とする。
【００１３】
【課題を解決するための手段】
油回収ポンプに逆転型ポンプを使用し、切替え弁を挿設した逆洗配管を油回収槽の底部と油回収ポンプの吐出側に連通させて設けると共に、２基の漉器と２台の油回収ポンプとを直列に接続する回収配管と、切替え弁を挿設し、回収配管同志を連通する連通配管を設け、油回収ポンプの逆転により、油回収槽に溜まった回収排水を利用して漉器の逆洗を行なうようにした。
【００１４】
【発明の実施の形態】
以下図１、図２に沿って本発明の実施の形態について説明する。なお、図３、図４に示す従来型のものと同一の部分については、同一の符号を付し、詳細な説明は省略する。
図において１０、１１は油回収ポンプであって、例えば、一軸偏心ねじポンプ等逆転型のポンプが使用されている。
Ｇは逆洗配管であって、油回収槽６の底部と油回収ポンプ１０、１１の吐出側とに連結されている。また、該逆洗配管Ｇは分岐延在され、海水吸入箱９にも連結されている。
【００１５】
ｍ、ｎ、ｏ、ｐは逆洗配管Ｇ上、夫々油回収ポンプ１０、１１、油回収槽６、海水吸入箱９との連結部の手前に挿設された切替え弁である。
Ｉは連通配管であって、２基の漉器２、３と、２台の油回収ポンプ１０、１１とを直列連結する回収配管Ｈ同志を連通している。ｑは連通配管Ｉ上に挿設された切替え弁である。
【００１６】
本発明は以上の通りの配管であつて、いま、図１においては切替え弁ａ、ｂ、ｅ、ｆ、ｇ、ｈ、ｑを開いており、切替え弁ｃ、ｄ、ｍ、ｎ、ｏ、ｐ、ｉ、ｋを閉じているので、油回収ポンプ１０、１１を正転駆動すると、流出油は油回収器１から吸引され、漉器２を径て、油回収ポンプ１０、１１を通って、油回収槽６に回収される。
【００１７】
漉器２のスクリーンが目詰まりしたり、漉器２の上流側にゴミが溜った場合には、切替え弁ａ、ｂを閉じ、同時に切替え弁ｃ、ｄを開けると、今度は流出油は油回収器１から吸引され、漉器３を径て、油回収ポンプ１０、１１を通って、油回収槽６に回収されることになる。
【００１８】
さて、漉器３を通す切替え運転に入ると、漉器２を逆洗することになるが、逆洗にあたっては、図２に示すように切替え弁ｂ、ｍ、ｏ、ｉを開き、切替え弁ｑ、ｆを閉じる。この状態で油回収ポンプ１０を逆転駆動すると、油回収槽６に溜まっている回収排水が、逆洗配管Ｇを通って油回収ポンプ１０から吸引配管Ｈを逆流し、漉器２の下流側に送給され、漉器２のスクリーンが逆洗されると共に、漉器２の上流側に溜ったゴミがゴミ回収箱７に回収される。
【００１９】
上記逆洗の状態において、油回収ポンプ１１は正転駆動されているので、流出油の回収は漉器３を介して、油回収ポンプ１１により継続して行なわれる。
このように逆洗のときは１台のポンプによる回収となるが、逆洗の時間は回収作業に比べて短いので、全体の回収効率に影響を与える程ではない。
漉器２の逆洗が終了したら切替え弁ｑ、ｆを開き、切替え弁ｂ、ｍ、ｏ、ｉを閉じ、油回収ポンプ１０を正転駆動に切替えることにより漉器３を介して、２台のポンプ１０、１１による回収が再開される。
【００２０】
この状態で漉器２は、次の切替え運転に備えて待機することになる。そして、漉器２を使った運転中に、漉器３を逆洗する場合も前記と同要領で行なえる。即ち、切替え弁ｋ、ｄ、ｎ、ｏを開き、切替え弁ｑ、ｈを閉じ、回収ポンプ１１を逆転駆動して行なう。
【００２１】
なお、逆洗にあたっては、油回収槽６に溜まっている回収排水が洗浄水として使用されるが、この洗浄水は再びゴミ回収箱７から油回収槽６に回収され、循環して使用される。
もし、洗浄水が不足するときには、切替え弁ｏを閉じ、切替え弁ｐを開いて海水吸入箱９から海水を補給することができる。この場合でも海水を補給する程度であり、全体に大量の海水を使用するものではない。
【００２２】
【発明の効果】
本発明は、油回収ポンプとして逆転型ポンプを使用し、これを逆洗ポンプとして兼用せしめたので、逆洗専用のポンプを設備する必要がなくなり、油回収装置のコストダウンが図れた。
また、油回収槽に溜まっている回収排水を、逆洗時の洗浄水として使用するようにしたので、油回収槽に大量の海水を蓄えることがなくなり、結果的に流出油の回収効率を向上させることができた。
【図面の簡単な説明】
【図１】本発明による油回収装置のラインを示す図。
【図２】本発明による油回収装置の逆洗状態を示す図。
【図３】従来の油回収装置のラインを示す図。
【図４】従来の油回収装置の逆洗状態を示す図。
【符号の説明】
１ 油回収器 ２、３ 漉器
４、５ 油回収ポンプ ６ 油回収槽
７ ゴミ回収箱 ８ 逆洗用ポンプ
９ 海水吸入箱 １０、１１ 油回収ポンプ
Ａ、Ｂ、Ｃ、Ｈ 回収配管 Ｄ、Ｆ、Ｇ 逆洗配管
Ｅ 排水配管 Ｉ 連通配管
ａ、ｂ、ｃ、ｄ 切替え弁 ｅ、ｆ、ｇ、ｈ 切替え弁
ｉ、ｊ、ｋ、ｌ 切替え弁 ｍ、ｎ、ｏ、ｐ、ｑ 切替え弁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil recovery apparatus that recovers oil that has flowed out to sea.
[0002]
[Prior art]
Oil spilled to the sea due to an oil tanker accident, etc. must be collected as soon as possible to prevent marine pollution. Various means are provided for the recovery of the spilled oil.
As one of the more effective oil recovery apparatuses, a ship-mounted oil recovery apparatus that uses a pump to suck and recover with a fixture has been used.
[0003]
3 and 4 show a line of a conventional ship-mounted oil recovery apparatus using a fixture, and the outline thereof will be described below.
Reference numeral 1 denotes an oil recovery device that sucks and recovers oil that has been submerged in the sea surface and floats on the upper surface of the sea surface. Only things are sucked.
[0004]
Reference numerals 2 and 3 denote fixtures, which are connected in parallel by the oil recovery device 1 and the recovery pipe A, and are used by switching. In addition, it has a built-in screen, which sucks and picks up dust that cannot be passed through the pump at the later stage.
Reference numerals 4 and 5 denote oil recovery pumps, which are connected in parallel to the fixtures 2 and 3 by a recovery pipe B, and are suctioned by the other one at the same time, or when one of the maintenance is not in operation. It can be done.
[0005]
An oil recovery tank 6 is connected to the discharge side of the oil recovery pumps 4 and 5 through a recovery pipe C, and stores the recovered oil.
Reference numeral 7 denotes a garbage collection box, which is connected to the upstream side of the fixtures 2 and 3 via the backwash pipe D, and the garbage collected by the fixtures 2 and 3 is collected. The garbage collection box 7 is also connected to the oil collection tank 6 by a drain pipe E, and the washing water used for backwashing the clogs of the fixtures 2 and 3 and for collecting garbage is used as the oil collection tank. 6 and stored in the oil recovery tank 6.
[0006]
8 is a backwash pump, which is connected to the downstream side of the fixtures 2 and 3 by a backwash pipe F, sucks seawater from the seawater suction box 9, and feeds the seawater downstream of the fixtures 2 and 3. To send.
In the figure, a, b, c, and d are switching valves inserted before and after the fixtures 2 and 3 on the recovery pipe, and e, f, g, and h are on the recovery pipe and the oil recovery pumps 4 and 5. The switching valves are inserted before and after, and i, j, k, and l are switching valves inserted before and after the fixtures 2 and 3 on the backwash pipe.
[0007]
Because of such a configuration, the switching valves a, b and e, f, g, h are opened and the switching valves c, d and i, j, k, l are closed as shown in FIG. When the oil recovery pumps 4 and 5 are operated, the spilled oil is sucked from the oil recovery device 1, passes through the oil recovery pumps 4 and 5, passes through the oil recovery device 2, and is recovered in the oil recovery tank 6. At this time, the fixture 3 is in a standby state for the switching operation.
[0008]
When the screen of the fixture 2 is clogged, or when dust is fully packed on the upstream side of the fixture 2, the switching valves c and d are opened, and at the same time, the switching valves a and b are closed to perform the switching operation. That is, the oil spilled from the oil collector 1 through the fixture 3 is sucked into the oil recovery pumps 4 and 5 and continuously recovered in the oil recovery tank 6.
[0009]
At this time, since the furniture 2 is in a dirty state, the switching valves i and j are opened, and the backwash pump 8 is operated to perform backwashing. Since the backwash pump 8 sucks seawater from the seawater suction box 9 and pumps it to the fixture 2, the clogging of the screen of the fixture 2 is backwashed, and the waste clogged upstream of the fixture 2 is washed water. As a result, it is fed and collected in the garbage collection box 7. FIG. 4 shows a state in which switching operation is performed and backwashing is performed.
[0010]
When the cleaning of the fixture 2 is completed, the switching valves i and j are closed, and the fixture 2 stands by in preparation for the next switching operation.
In addition, a screen is provided at the bottom of the garbage collection box 7, and only the garbage is collected in the garbage collection box 7, and the washing water is supplied from the bottom to the oil collection tank 6 through the drainage pipe E and collected. Stored with oil.
[0011]
[Problems to be solved by the invention]
As described above, in the conventional configuration, the backwash pump 8 is provided and seawater is used as the wash water.
For this reason, a pump must be provided only for backwashing, and a large amount of seawater used as washing water accumulates in the oil recovery tank, reducing the concentration of the recovered oil, resulting in recovery of the spilled oil. There was an inconvenience that the efficiency was lowered.
[0012]
The present invention has been made in view of the above-mentioned drawbacks. The oil recovery pump is also used for backwashing, and the recovered wastewater is used as cleaning water, thereby reducing the cost of the oil recovery device and the outflow. The purpose is to improve the oil recovery efficiency.
[0013]
[Means for Solving the Problems]
A reverse pump is used as the oil recovery pump, and a backwash pipe with a switching valve is provided in communication with the bottom of the oil recovery tank and the discharge side of the oil recovery pump. A recovery pipe that connects the recovery pump in series, a switching valve, and a communication pipe that connects the recovery pipes to each other are provided. By using the recovered wastewater collected in the oil recovery tank by reversing the oil recovery pump, The vessel was backwashed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected about the part same as the conventional type shown in FIG. 3, FIG. 4, and detailed description is abbreviate | omitted.
In the figure, reference numerals 10 and 11 denote oil recovery pumps, for example, reverse type pumps such as uniaxial eccentric screw pumps are used.
G is a backwash pipe and is connected to the bottom of the oil recovery tank 6 and the discharge side of the oil recovery pumps 10 and 11. The backwash pipe G extends in a branched manner and is also connected to the seawater suction box 9.
[0015]
m, n, o, and p are switching valves that are inserted on the backwash pipe G before the connecting portions of the oil recovery pumps 10 and 11, the oil recovery tank 6, and the seawater suction box 9, respectively.
I is a communication pipe that communicates two recovery pipes H that connect two fixtures 2 and 3 and two oil recovery pumps 10 and 11 in series. q is a switching valve inserted on the communication pipe I.
[0016]
The present invention is a pipe as described above. In FIG. 1, the switching valves a, b, e, f, g, h, and q are opened, and the switching valves c, d, m, n, o, Since p, i, and k are closed, when the oil recovery pumps 10 and 11 are driven forward, the spilled oil is sucked from the oil recovery device 1, passes through the fixture 2, passes through the oil recovery pumps 10 and 11. The oil is recovered in the oil recovery tank 6.
[0017]
If the screen of the fixture 2 is clogged or if dust accumulates on the upstream side of the fixture 2, the switching valves a and b are closed and the switching valves c and d are opened at the same time. It is sucked from the collector 1, diameters the fixture 3, passes through the oil recovery pumps 10 and 11, and is recovered in the oil recovery tank 6.
[0018]
Now, when the switching operation through the fixture 3 is started, the fixture 2 is backwashed. However, in the case of backwashing, the switching valves b, m, o, i are opened as shown in FIG. Close q and f. When the oil recovery pump 10 is driven in reverse in this state, the recovered wastewater accumulated in the oil recovery tank 6 flows back through the backwash pipe G and the suction pipe H from the oil recovery pump 10 to the downstream side of the fixture 2. Then, the screen of the fixture 2 is backwashed, and the dust collected on the upstream side of the fixture 2 is collected in the garbage collection box 7.
[0019]
In the backwashing state, since the oil recovery pump 11 is driven forward, recovery of the spilled oil is continued by the oil recovery pump 11 via the fixture 3.
As described above, during backwashing, recovery is performed by a single pump, but the backwashing time is shorter than that of the recovery work, and thus does not affect the overall recovery efficiency.
When the backwashing of the fixture 2 is completed, the switching valves q, f are opened, the switching valves b, m, o, i are closed, and the oil recovery pump 10 is switched to the forward rotation drive to switch two units through the fixture 3 Recovery by the pumps 10 and 11 is resumed.
[0020]
In this state, the fixture 2 stands by in preparation for the next switching operation. And when driving the fixture 3 during the operation using the fixture 2, it can be performed in the same manner as described above. That is, the switching valves k, d, n, and o are opened, the switching valves q and h are closed, and the recovery pump 11 is driven in reverse.
[0021]
In backwashing, the recovered wastewater collected in the oil recovery tank 6 is used as cleaning water, but this cleaning water is again recovered from the garbage recovery box 7 into the oil recovery tank 6 and circulated for use. .
If the washing water is insufficient, the switching valve o can be closed and the switching valve p can be opened to supply seawater from the seawater suction box 9. Even in this case, the seawater is merely replenished, and a large amount of seawater is not used as a whole.
[0022]
【The invention's effect】
In the present invention, a reverse pump is used as an oil recovery pump, and this is also used as a backwash pump. Therefore, it is not necessary to provide a pump dedicated to backwashing, and the cost of the oil recovery device can be reduced.
In addition, the wastewater collected in the oil recovery tank is used as washing water for backwashing, so that a large amount of seawater is not stored in the oil recovery tank, resulting in improved recovery efficiency of the spilled oil. I was able to.
[Brief description of the drawings]
FIG. 1 is a diagram showing a line of an oil recovery apparatus according to the present invention.
FIG. 2 is a diagram showing a backwashing state of the oil recovery apparatus according to the present invention.
FIG. 3 is a diagram showing a line of a conventional oil recovery device.
FIG. 4 is a view showing a backwashing state of a conventional oil recovery apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Oil recovery device 2, 3 Fixtures 4, 5 Oil recovery pump 6 Oil recovery tank 7 Garbage collection box 8 Backwash pump 9 Seawater suction box 10, 11 Oil recovery pump A, B, C, H Recovery piping D, F , G Backwash pipe E Drain pipe I Communication pipe a, b, c, d Switching valve e, f, g, h Switching valve i, j, k, l Switching valve m, n, o, p, q Switching valve

Claims (2)

油回収器と配管接続する２基の漉器と、油回収槽と配管接続する２台の油回収ポンプと、漉器に配管接続され、油回収槽と配管連通するゴミ回収箱とを備えた油回収装置において、油回収ポンプとして逆転型ポンプを使用し、油回収槽底部と油回収ポンプの吐出側とを連結する逆洗配管を設けると共に、２基の漉器と２台の油回収ポンプとを直列接続する回収配管と、該回収配管同志を連通する連通配管とを設け、油回収ポンプの逆転駆動により、油回収槽内の回収排水を使用して逆洗するようにしたことを特徴とする油回収装置。Two fixtures connected to the oil recovery unit by piping, two oil recovery pumps connected to the oil recovery tank by piping, and a garbage collection box connected to the fixture and connected to the oil recovery tank by piping In the oil recovery apparatus, a reverse pump is used as an oil recovery pump, a backwash pipe is provided to connect the bottom of the oil recovery tank and the discharge side of the oil recovery pump, and two fixtures and two oil recovery pumps are provided. A recovery pipe that is connected in series and a communication pipe that communicates the recovery pipes are provided, and backwashing is performed using the recovered wastewater in the oil recovery tank by the reverse drive of the oil recovery pump. Oil recovery device. 逆洗配管を分岐延在させ、海水吸入箱に連通させたことを特徴とする請求項１記載の油回収装置。2. The oil recovery apparatus according to claim 1, wherein the backwash pipe is branched and communicated with a seawater suction box.
JP37550298A 1998-12-16 1998-12-16 Oil recovery device Expired - Fee Related JP3977535B2 (en)

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JP37550298A JP3977535B2 (en) 1998-12-16 1998-12-16 Oil recovery device

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KR101516288B1 (en) * 2013-04-05 2015-05-06 삼성중공업 주식회사 Vessel for extracting oil from inside an undersea structure and control method thereof
KR101475407B1 (en) * 2013-07-05 2014-12-23 삼성중공업 주식회사 System for recovering oil and control method thereof

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JPS4873987A (en) * 1972-01-10 1973-10-05
JPS4988291A (en) * 1972-12-27 1974-08-23
JPS508289A (en) * 1973-06-01 1975-01-28
JPS5541339Y2 (en) * 1973-06-28 1980-09-27
JPS57137594U (en) * 1981-09-10 1982-08-27
JPH10258276A (en) * 1997-03-19 1998-09-29 Toyo Denki Kogyosho:Kk Suspended oil recovering device

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