JP2004008870A - Oil-water separation apparatus - Google Patents

Oil-water separation apparatus Download PDF

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Publication number
JP2004008870A
JP2004008870A JP2002163710A JP2002163710A JP2004008870A JP 2004008870 A JP2004008870 A JP 2004008870A JP 2002163710 A JP2002163710 A JP 2002163710A JP 2002163710 A JP2002163710 A JP 2002163710A JP 2004008870 A JP2004008870 A JP 2004008870A
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Japan
Prior art keywords
oil
water
vacuum chamber
float switch
valve
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JP2002163710A
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Japanese (ja)
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JP3716230B2 (en
Inventor
Kenji Nakagawa
仲川 憲治
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Hitachi Plant Technologies Ltd
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Hitachi Industries Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil-water separation apparatus having high reliability, not causing the operation failure of a float switch by floating oil or the like. <P>SOLUTION: In the oil-water separation apparatus wherein a liquid of mixed oil and water is introduced into a vacuum chamber while the vacuum chamber while being evacuated and heated, and the heated liquid of mixed oil-water is separated into oil and water by boiling of the liquid under vacuum. The liquid of mixed oil-water is introduced into the vacuum chamber by the operation of the float switch provided in the vacuum chamber, a piping for supplying a washing liquid is connected to the bottom part of the case body of the float switch through a valve, and the valve is opened to spray the washing liquid on the float switch by the vacuum in the vacuum chamber. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は油水分離装置に係り、特に真空チャンバに導入した油水混合液を減圧状態で加熱して沸騰させて油と水を分離せしめる油水分離装置に関するものである。
【0002】
【従来の技術】
この種の油水分離装置では、真空チャンバが真空ポンプの吸気側と連結してあり、また真空チャンバの本体には内部の油水混合液(例えば、ドレン)を昇温する加熱器を設けている。ドレンを油と水に分離するには、ドレンを真空チャンバに導入し、真空ポンプを運転すると共に加熱器により真空チャンバを昇温する。真空チャンバが減圧下における水の沸点に達するとドレン中の水が蒸発(気化)して真空ポンプより排出され、真空チャンバ内には油が残留した状態になる。
【0003】
真空チャンバ内のドレンが少なくなったら、新たにドレンを真空チャンバに導入して油と水を分離することを繰り返し、チャンバ内に残留した油は適宜に排出する。
【0004】
このようなものを示したものとして、特開平11−343976号公報や特開2000−18162号公報などがある。
【0005】
【発明が解決しようとする課題】
真空チャンバ内への油水混合液の導入を真空チャンバに連通するように設けたフロートスイッチの作動で行うようにすると、油水混合液が真空チャンバ内で沸騰する際に油分が飛散し、フロートスイッチを汚染しフロートスイッチの作動が良好に行なわれなくなる。
【0006】
また、真空チャンバ内では油水混合液の油分濃度が上昇し、上部に濃縮化した浮上油が集まる。油水混合液の液面は油水分離の進行やドレンの追加で上下し、その際、フロートスイッチに浮上油の一部が流入してフロートスイッチが固渋して作動不良が生じるという問題があった。ドレンがゴミを含んでいる場合には、フロートスイッチは簡単に固渋を起してしまう。フロートスイッチの作動不良は、装置全体の作動停止を起す。
【0007】
真空チャンバ内で浮上油の量が多くなると、油水混合液が真空チャンバ内で沸騰しても、下部の水の蒸発を妨げ、油水混合液の水位は変わらなくなり、フロートスイッチは正常であっても作動しなくなる。
【0008】
それ故本発明の目的は、フロートスイッチが浮上油などで作動不良を起すことがなく、信頼性の高い油水分離装置を提供することである。
また、本発明の他の目的は、フロートスイッチの正常な動作を期待でき、信頼性の高い油水分離装置を提供することである。
【0009】
【課題を解決するための手段】
上記目的を達成する本発明の特徴とするところは、真空チャンバ内に油水混合液を導入し、真空チャンバ内を減圧しつつ導入した油水混合液を加熱し、減圧下での油水混合液の沸騰で油と水を分離せしめる油水分離装置において、真空チャンバに設けたフロートスイッチの作動で真空チャンバ内に油水混合液を導入し、該フロートスイッチの函体底部に弁を介して洗浄液を供給する配管を接続して、該弁を開いて真空チャンバ内の減圧で該フロートスイッチに洗浄液を吹き付けるようにしてあることである。
また、本発明の他の特徴とするところは、真空チャンバの側壁に設けた排出口に弁を具備した排出配管を接続し、弁を開くことにより油水分離で濃縮化して生じる浮上油を排出するようにしたことにある。
【0010】
【発明の実施の形態】
以下、本発明の一実施形態について説明する。
図1は本発明の一実施形態である油水分離装置の系統図である。
図において、10は真空チャンバ、11は冷却器、12は水タンク、13はエゼクタを示し、真空チャンバ10と冷却器11は蒸留配管14で接続し、冷却器11とエゼクタ13は蒸留配管15で接続してある。
【0011】
エゼクタ13は水タンク12とポンプ16と熱交換器18を循環水配管36,37,38,39で接続して水の循環回路を形成し、該循環回路によって、エゼクタ13の駆動水を循環させ、真空チャンバ10に対する真空発生機構(真空ポンプ機能)を構成させている。
【0012】
エゼクタ13は駆動水温が上昇すると性能が低下するので、駆動水温を安定させるため水タンク12に熱交換器18を含む水の冷却機構を組み込んでいる。即ち、冷凍システム17の冷凍機で得る冷熱と熱交換器18で熱交換して、エゼクタ13における駆動水温の上昇を防止している。
【0013】
水タンク12には回収配管28を差し込んであり、回収配管28は電磁弁24を介して真空チャンバのドレン液面を制御するフロートスイッチ20を内蔵するフロートスイッチ函27の底部と接続している。この回収配管28と水タンク12の接続は、水面から水タンク12の底部に向けて設けたものに限定するものではなく、水タンク12の側壁面の適当な位置に設けた排水口に接続してもよい。水タンク12は、底部に処理水排出配管40を接続してある。
【0014】
真空チャンバ10には、ドレン供給用としてストレーナ26,電磁弁21がドレン供給配管35を介して、また廃液排出用として廃液排出配管34、電磁弁22が廃液排出配管33を介して接続してある。真空チャンバ10に設けた濃縮廃液排出口に接続した排出配管31は電磁弁23と放出管32を介して廃液排出配管34に接続している。
【0015】
また、冷却器11とエゼクタ13を接続した蒸留配管15には電磁弁25を設けて、電磁弁25の開動作により真空チャンバ10を大気開放できるようにしてある。
【0016】
真空チャンバ10の内部にはドレンを昇温させる加熱器19を設けており、真空チャンバ10に導入したドレンを昇温する。この実施形態では加熱器19は真空チャンバ10の内部に設けているが、真空チャンバ10の外側に設けてドレンを昇温してもよい。
【0017】
電磁弁21はフロートスイッチ20の設定位置により、開閉する。即ち、図1における下向きの2個の三角形は、その上側になっている底辺でフロートスイッチ20における設定位置を示し、真空チャンバ10におけるドレンの液面位置が下方の三角形の設定位置に一致すると電磁弁21が開いてドレンを導入し、上方の三角形の設定位置にドレンの液面位置が一致すると電磁弁21は閉じてドレンの導入を停止する。
【0018】
電磁弁22は図示していない制御盤で開閉を設定するものであり、真空チャンバ10内の全ドレンを廃液として定期的に排出する時に開くようにしてある。具体的にはドレンの油分濃度によって排出インターバルを設定できる機能を制御盤に組み込んである。
【0019】
電磁弁23,25は、制御盤のタイマーで一定時間毎に真空チャンバ10内の浮上油の油分濃度が一定値に達することを予定して開き、浮上油を排出し、真空チャンバ10内でドレンの濃度が一定値以下に抑えるようにしてある。春秋に比較して、夏季は湿度が高くドレン中の油分濃度は低いので電磁弁23,25の閉期間は長くし、冬季は湿度が低く油分濃度は高いため閉期間は短くする。電磁弁23,25の開時間は排出配管31からの浮上油を含むドレンの排出速度で決める。
【0020】
電磁弁24は、図示していない制御盤のタイマーで一定時間毎に開くようにしてある。電磁弁24を開放した時の動作は、後述する。
【0021】
油水分離に先立って、水タンク12に処理水排出配管40から水が流れ出すまで適宜な水を充填しておく。そして、電磁弁21を開いて油水混合液であるドレンをドレン供給配管35から真空チャンバ10に導入する。真空チャンバ10に所定量のドレンを導入したら、電動弁21を閉にして導入を停止する。
【0022】
ドレン導入の開始指示は制御盤上で行うが、後は自動運転において作業中に真空チャンバ10内のドレンの水位が下った時にフロートスイッチ20が作動して電動弁21は開き、新しいドレンを導入する。なお、真空チャンバ10内におけるドレン液面の低下は、後述する処理水排出配管40からの流出による。
【0023】
次に、ポンプ16を運転して、自動運転に移行する。
ポンプ16の作動により、水タンク12内の水を循環水配管36,37,38,39によってエゼクタ13を通して循環させると、エゼクタ13によって蒸留配管14、15内が吸引されるので真空チャンバ10内は減圧され、ドレンを加熱器19で昇温していくと、これによりドレンの水分は低温で沸騰する。
【0024】
真空チャンバ10内で沸騰したドレンの水分は水蒸気となって蒸留配管14を通って冷却器11に送られ、冷却器11で水に戻されて処理水となり、エゼクタ13を経て水タンク12に回収される。エゼクタ13は駆動水温が上昇すると性能が低下するので、水タンク12内に設けた冷凍システムの冷凍機による熱交換器18が水温の上昇を防止している。
【0025】
水タンク12に回収された処理水は、ポンプ16の循環水と混合し水タンクの水位が上昇する。水タンク12の上限水位は処理水排出配管40の設定位置で決まり、この水位を超える水が処理水排出配管40を経由して排出される。
【0026】
真空チャンバ10内のドレンは水分蒸発に伴って液面が低下する。液面位置は連通しているフロートスイッチ函27の液面と同一であり、フロートスイッチ20の設定位置にしたがって電磁弁21の開閉を制御し、ドレンを真空チャンバ10内に自動的に導入蒸留運転を継続する。
【0027】
上記運転を繰り返すと真空チャンバ10内の油水混合液は濃縮され、油分濃度が上昇し、油分濃度の高い液は比重差によって真空チャンバ10内液面に浮上する。前述したように本図に示していない制御盤には定期的に本装置を停止する制御が組み込まれており、濃縮液排出口以上の液面条件においてフロートスイッチ20が作動し、装置を停止するとともに、電磁弁23、25を開き真空チャンバ10内の圧力を大気に開放し、浮上油を排出配管31、電磁弁23、排出配管32、廃液排出配管34を通して排出する。
【0028】
真空チャンバ10内の油水混合液の油分濃度が上昇した状態で液面が沸騰により波立って油分が飛散し、真空チャンバ内にとどまらず蒸気流にしたがってエゼクタ13に到達し、時間経過とともに循環水を汚染する。水タンク12では、油水の比重差によって油分が浮上するようになる。
【0029】
回収配管28の末端は水タンク12の水面下にあり、図示していない制御盤のタイマーが電磁弁24を開くと、水タンク12と真空チャンバ10側の圧力差によって水タンク12の循環水は回収配管28における末端の水位まで真空チャンバ10側へ回収される。回収された油分を含む循環水(水タンク12に貯留した循環水の上部水)は再蒸留され、水タンク12に戻る。
【0030】
水タンク12に貯留した循環水の上部水は真空チャンバ10に設けてあるフロートスイッチ函27の底部に勢い良く回収される時に、フロートスイッチ20を洗浄し、浮上油が付着していても洗い流す。循環水がフロートスイッチ函27の底部から連結管30を通って真空チャンバ10へ流れる時の水流によってフロートスイッチ函27下部に堆積した油分を含むゴミは撹拌され、真空チャンバ10に回収される。水面が回収配管28の末端に等しくなった時、回収される循環水に空気が入り、フロートスイッチ函27の中で泡として膨張浮上することにより、フロートスイッチ20に付着したゴミも除去し、フロートスイッチ20は正常動作状況を維持する。また、水タンク12から装置外への油分流出の防止にもなっている。
【0031】
本実施形態で、下記の効果が得られる。
即ち、水タンク12の循環水をフロートスイッチ函27を通して定期的に真空チャンバ10に回収することで、油分やゴミなどでフロートスイッチ20が固渋することを防止でき、フロートスイッチ20の動作不良がなくなり、また、循環水の水質を長期間にわたって清浄に保持することができ、ポンプ16や熱交換器18を含む水の循環路のメンテナンスを少なくすることができて、自浄作用により、高い信頼性を維持できる。さらに、電磁弁23からの浮上油の排出により、真空チャンバ10の油水混合液の濃縮度を下げ、油分の飛散を防ぎ、蒸留系統の油汚染を緩和することができる。
【0032】
本発明は上記した実施形態に限定されるものではなく、真空ポンプとしてエゼクタを用いず、油水分離をして得た水を水タンク12に貯留しない実施形態では、フロートスイッチ20の洗浄液を電磁弁24と同等な機能を持つ弁を介して適宜な供給系統から得ても良い。
【0033】
【発明の効果】
以上説明したように本発明によれば、フロートスイッチが浮上油などで作動不良を起すことがなく、信頼性の高い油水分離装置を得ることができる。
【図面の簡単な説明】
【図1】本発明の一実施形態になる油水分離装置の系統を示す。
【符号の説明】
10…真空チャンバ
11…冷却器
12…水タンク
13…エゼクタ
14,15…蒸留配管
16…ポンプ
17…冷凍システム
18…熱交換器
19…加熱器
20…フロートスイッチ
21〜25…電磁弁
26…ストレーナ
27…フロートスイッチ函
28,29…回収配管
30…連結管
31,32…排出配管
33,34…廃液排出配管
35…ドレン供給配管
36〜39…循環水配管
40…処理水排出配管
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an oil-water separator, and more particularly to an oil-water separator that heats an oil-water mixture introduced into a vacuum chamber under reduced pressure and causes it to boil to separate oil and water.
[0002]
[Prior art]
In this type of oil / water separator, a vacuum chamber is connected to the suction side of a vacuum pump, and a main body of the vacuum chamber is provided with a heater for raising the temperature of an oil / water mixture (for example, drain) inside. To separate the drain into oil and water, the drain is introduced into a vacuum chamber, the vacuum pump is operated, and the vacuum chamber is heated by a heater. When the vacuum chamber reaches the boiling point of water under reduced pressure, the water in the drain evaporates (vaporizes) and is discharged from the vacuum pump, leaving oil in the vacuum chamber.
[0003]
When the drain in the vacuum chamber becomes low, the drain is newly introduced into the vacuum chamber to separate oil and water, and the oil remaining in the chamber is appropriately discharged.
[0004]
Japanese Patent Application Laid-Open Nos. 11-343976 and 2000-18162 disclose such a device.
[0005]
[Problems to be solved by the invention]
If the introduction of the oil / water mixture into the vacuum chamber is performed by operating a float switch provided to communicate with the vacuum chamber, when the oil / water mixture boils in the vacuum chamber, the oil is scattered, and the float switch is turned on. Float switch operation becomes poor due to contamination.
[0006]
In the vacuum chamber, the oil concentration of the oil-water mixture rises, and the concentrated floating oil collects at the upper part. The liquid level of the oil-water mixture rises and falls due to the progress of oil-water separation and the addition of drain. At that time, there was a problem that a part of the floating oil flowed into the float switch, the float switch became solid, and malfunction occurred. . If the drain contains debris, the float switch can easily get stuck. Malfunction of the float switch causes the entire device to stop operating.
[0007]
When the amount of floating oil in the vacuum chamber increases, even if the oil / water mixture boils in the vacuum chamber, it prevents the lower water from evaporating, the level of the oil / water mixture does not change, and even if the float switch is normal, Stop working.
[0008]
Therefore, an object of the present invention is to provide a highly reliable oil-water separation device in which a float switch does not malfunction due to floating oil or the like.
Another object of the present invention is to provide a highly reliable oil-water separation device which can expect normal operation of the float switch.
[0009]
[Means for Solving the Problems]
A feature of the present invention that achieves the above object is that an oil-water mixture is introduced into a vacuum chamber, and the introduced oil-water mixture is heated while reducing the pressure in the vacuum chamber, and the oil-water mixture is boiled under reduced pressure. In an oil / water separator that separates oil and water by using a float switch provided in a vacuum chamber, an oil / water mixture is introduced into the vacuum chamber by operating a float switch, and a pipe is provided to supply a washing liquid to the bottom of the float switch via a valve. , The valve is opened, and the cleaning liquid is sprayed on the float switch at a reduced pressure in the vacuum chamber.
Another feature of the present invention is that a discharge pipe provided with a valve is connected to a discharge port provided on a side wall of the vacuum chamber, and the valve is opened to discharge floating oil generated by concentration by oil-water separation. That's what I did.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described.
FIG. 1 is a system diagram of an oil-water separation device according to one embodiment of the present invention.
In the figure, reference numeral 10 denotes a vacuum chamber, 11 denotes a cooler, 12 denotes a water tank, 13 denotes an ejector, the vacuum chamber 10 and the cooler 11 are connected by a distillation pipe 14, and the cooler 11 and the ejector 13 are connected by a distillation pipe 15. Connected.
[0011]
The ejector 13 connects the water tank 12, the pump 16 and the heat exchanger 18 by circulating water pipes 36, 37, 38 and 39 to form a water circulation circuit, and circulates the driving water of the ejector 13 by the circulation circuit. And a vacuum generating mechanism (vacuum pump function) for the vacuum chamber 10.
[0012]
Since the performance of the ejector 13 decreases as the driving water temperature rises, a water cooling mechanism including a heat exchanger 18 is incorporated in the water tank 12 to stabilize the driving water temperature. In other words, the heat exchange between the cold heat obtained by the refrigerator of the refrigeration system 17 and the heat exchanger 18 prevents the drive water temperature in the ejector 13 from rising.
[0013]
A collection pipe 28 is inserted into the water tank 12, and the collection pipe 28 is connected via an electromagnetic valve 24 to the bottom of a float switch box 27 having a built-in float switch 20 for controlling the level of the drain in the vacuum chamber. The connection between the recovery pipe 28 and the water tank 12 is not limited to the one provided from the water surface toward the bottom of the water tank 12, and is connected to a drain port provided at an appropriate position on the side wall surface of the water tank 12. You may. The treated water discharge pipe 40 is connected to the bottom of the water tank 12.
[0014]
A strainer 26 and a solenoid valve 21 are connected to the vacuum chamber 10 via a drain supply pipe 35 for drain supply, and a waste liquid discharge pipe 34 and a solenoid valve 22 are connected via a drain discharge pipe 33 for waste liquid discharge. . A discharge pipe 31 connected to a concentrated waste liquid discharge port provided in the vacuum chamber 10 is connected to a waste liquid discharge pipe 34 via a solenoid valve 23 and a discharge pipe 32.
[0015]
An electromagnetic valve 25 is provided in the distillation pipe 15 connecting the cooler 11 and the ejector 13 so that the vacuum chamber 10 can be opened to the atmosphere by opening the electromagnetic valve 25.
[0016]
A heater 19 for raising the temperature of the drain is provided inside the vacuum chamber 10 to raise the temperature of the drain introduced into the vacuum chamber 10. In this embodiment, the heater 19 is provided inside the vacuum chamber 10, but the heater 19 may be provided outside the vacuum chamber 10 to raise the temperature of the drain.
[0017]
The solenoid valve 21 opens and closes according to the setting position of the float switch 20. That is, the two downward triangles in FIG. 1 indicate the set position of the float switch 20 at the bottom on the upper side, and when the liquid level position of the drain in the vacuum chamber 10 matches the set position of the lower triangle, the electromagnetic force is reduced. The valve 21 is opened to introduce the drain, and when the liquid level of the drain coincides with the upper set position of the triangle, the solenoid valve 21 closes to stop the introduction of the drain.
[0018]
The solenoid valve 22 is set to open and close by a control panel (not shown), and is opened when all drains in the vacuum chamber 10 are periodically discharged as waste liquid. Specifically, a function to set the discharge interval depending on the oil concentration of the drain is incorporated in the control panel.
[0019]
The solenoid valves 23 and 25 are opened by the timer of the control panel at predetermined intervals so that the oil concentration of the floating oil in the vacuum chamber 10 reaches a certain value, discharge the floating oil, and drain in the vacuum chamber 10. Is kept below a certain value. Compared to spring and autumn, the summer period is higher in humidity and the oil concentration in the drain is lower, so that the closing period of the solenoid valves 23 and 25 is longer, and the winter period is lower in humidity and the oil concentration is higher, so the closing period is shorter. The opening time of the solenoid valves 23 and 25 is determined by the discharge speed of the drain containing the floating oil from the discharge pipe 31.
[0020]
The solenoid valve 24 is opened at regular intervals by a timer of a control panel (not shown). The operation when the solenoid valve 24 is opened will be described later.
[0021]
Prior to oil-water separation, the water tank 12 is filled with appropriate water until water flows out of the treated water discharge pipe 40. Then, the solenoid valve 21 is opened, and the drain as the oil-water mixture is introduced into the vacuum chamber 10 from the drain supply pipe 35. When a predetermined amount of drain is introduced into the vacuum chamber 10, the electric valve 21 is closed to stop the introduction.
[0022]
The drain introduction start instruction is given on the control panel. After that, when the water level of the drain in the vacuum chamber 10 falls during the operation in the automatic operation, the float switch 20 is operated and the electric valve 21 opens to introduce a new drain. I do. Note that the drain liquid level in the vacuum chamber 10 decreases due to outflow from the treated water discharge pipe 40 described later.
[0023]
Next, the pump 16 is operated to shift to automatic operation.
When the water in the water tank 12 is circulated through the ejector 13 by the circulating water pipes 36, 37, 38, and 39 by the operation of the pump 16, the inside of the distillation pipes 14 and 15 is sucked by the ejector 13. When the pressure is reduced and the temperature of the drain is increased by the heater 19, the moisture of the drain boils at a low temperature.
[0024]
The water content of the drain boiled in the vacuum chamber 10 becomes steam, is sent to the cooler 11 through the distillation pipe 14, is returned to the water in the cooler 11, becomes treated water, and is collected in the water tank 12 through the ejector 13. Is done. Since the performance of the ejector 13 decreases as the driving water temperature increases, the heat exchanger 18 of the refrigerator of the refrigeration system provided in the water tank 12 prevents the water temperature from increasing.
[0025]
The treated water collected in the water tank 12 mixes with the circulating water of the pump 16, and the water level in the water tank rises. The upper limit water level of the water tank 12 is determined by the set position of the treated water discharge pipe 40, and water exceeding this level is discharged via the treated water discharge pipe 40.
[0026]
The liquid level of the drain in the vacuum chamber 10 decreases as the water evaporates. The liquid level is the same as the liquid level of the float switch box 27 which is in communication, and the opening and closing of the solenoid valve 21 is controlled according to the set position of the float switch 20 to automatically introduce the drain into the vacuum chamber 10 and perform the distillation operation. To continue.
[0027]
By repeating the above operation, the oil-water mixture in the vacuum chamber 10 is concentrated, the oil concentration increases, and the liquid with a high oil concentration floats on the liquid surface in the vacuum chamber 10 due to the difference in specific gravity. As described above, the control panel not shown in the drawing incorporates a control for periodically stopping the apparatus, and the float switch 20 is operated to stop the apparatus when the liquid level is equal to or higher than the concentrated liquid discharge port. At the same time, the solenoid valves 23 and 25 are opened to release the pressure in the vacuum chamber 10 to the atmosphere, and the floating oil is discharged through the discharge pipe 31, the solenoid valve 23, the discharge pipe 32, and the waste liquid discharge pipe 34.
[0028]
In a state where the oil concentration of the oil-water mixture in the vacuum chamber 10 is increased, the liquid surface is wavy due to boiling and the oil is scattered, and reaches the ejector 13 according to a steam flow without staying in the vacuum chamber, and circulates with time. To contaminate. In the water tank 12, the oil component floats due to the difference in specific gravity of the oil water.
[0029]
The end of the recovery pipe 28 is below the surface of the water tank 12. When a timer of a control panel (not shown) opens the solenoid valve 24, the circulating water in the water tank 12 is discharged due to a pressure difference between the water tank 12 and the vacuum chamber 10. The water is collected toward the vacuum chamber 10 up to the water level at the end of the collection pipe 28. The circulating water containing the recovered oil (the upper water of the circulating water stored in the water tank 12) is redistilled and returns to the water tank 12.
[0030]
When the upper water of the circulating water stored in the water tank 12 is vigorously collected at the bottom of the float switch box 27 provided in the vacuum chamber 10, the float switch 20 is washed, and even if floating oil is attached, it is washed away. When the circulating water flows from the bottom of the float switch box 27 to the vacuum chamber 10 through the connecting pipe 30, the dust containing oil deposited on the lower part of the float switch box 27 is stirred and collected in the vacuum chamber 10. When the water level becomes equal to the end of the recovery pipe 28, air enters the recovered circulating water and expands and floats as bubbles in the float switch box 27, thereby removing dust attached to the float switch 20 and removing the dust. The switch 20 maintains a normal operation state. It also prevents oil from flowing out of the device from the water tank 12.
[0031]
In the present embodiment, the following effects can be obtained.
That is, by periodically collecting the circulating water in the water tank 12 into the vacuum chamber 10 through the float switch box 27, it is possible to prevent the float switch 20 from being hardened by oil, dust, or the like. In addition, the water quality of the circulating water can be kept clean for a long period of time, and the maintenance of the water circulation path including the pump 16 and the heat exchanger 18 can be reduced. Can be maintained. Further, by discharging the floating oil from the electromagnetic valve 23, the concentration of the oil-water mixture in the vacuum chamber 10 can be reduced, the scattering of the oil can be prevented, and the oil contamination of the distillation system can be reduced.
[0032]
The present invention is not limited to the embodiment described above. In an embodiment in which the ejector is not used as a vacuum pump and the water obtained by oil-water separation is not stored in the water tank 12, the cleaning liquid of the float switch 20 is supplied by an electromagnetic valve. It may be obtained from an appropriate supply system via a valve having a function equivalent to 24.
[0033]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a highly reliable oil-water separator without causing the float switch to malfunction due to floating oil or the like.
[Brief description of the drawings]
FIG. 1 shows a system of an oil-water separation device according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Vacuum chamber 11 ... Cooler 12 ... Water tank 13 ... Ejector 14, 15 ... Distillation piping 16 ... Pump 17 ... Refrigeration system 18 ... Heat exchanger 19 ... Heater 20 ... Float switch 21-25 ... Solenoid valve 26 ... Strainer 27 Float switch boxes 28, 29 Recovery pipe 30 Connection pipes 31, 32 Discharge pipes 33, 34 Waste liquid discharge pipe 35 Drain supply pipes 36 to 39 Circulating water pipe 40 Processed water discharge pipe

Claims (4)

真空チャンバ内に油水混合液を導入し、真空チャンバ内を減圧しつつ導入した油水混合液を加熱し、減圧下での油水混合液の沸騰で油と水を分離せしめる油水分離装置において、
真空チャンバに設けたフロートスイッチの作動で真空チャンバ内に油水混合液を導入し、該フロートスイッチの函体底部に弁を介して洗浄液を供給する配管を接続して、該弁を開いて真空チャンバ内の減圧で該フロートスイッチに洗浄液を吹き付けるようにしてあることを特徴とする油水分離装置。
In an oil-water separation device that introduces an oil-water mixture into a vacuum chamber, heats the introduced oil-water mixture while reducing the pressure in the vacuum chamber, and separates oil and water by boiling the oil-water mixture under reduced pressure.
An oil-water mixture is introduced into the vacuum chamber by the operation of a float switch provided in the vacuum chamber, a pipe for supplying a cleaning liquid is connected to the bottom of the float switch via a valve, and the valve is opened to open the vacuum chamber. An oil-water separation device characterized in that a cleaning liquid is sprayed to the float switch at a reduced pressure in the inside.
上記請求項1に記載の油水分離装置において、洗浄液として真空チャンバ内で沸騰した油水混合液から発生した蒸気を冷却して水タンクに貯留した水の上部水を用いることを特徴とする油水分離装置。2. The oil-water separator according to claim 1, wherein the upper water of the water that has cooled the steam generated from the oil-water mixture boiled in the vacuum chamber and stored in the water tank is used as the cleaning liquid. . 上記請求項1に記載の油水分離装置において、真空チャンバの側壁に設けた排出口に弁を具備した排出配管を接続し、該弁を開くことにより油水分離で濃縮化して生じる浮上油を排出するようにしてあることを特徴とする請求項1に記載の油水分離装置。The oil-water separator according to claim 1, wherein a discharge pipe provided with a valve is connected to a discharge port provided in a side wall of the vacuum chamber, and the valve is opened to discharge floating oil generated by concentration by oil-water separation. The oil-water separation device according to claim 1, wherein 上記請求項1に記載の油水分離装置において、水タンクに貯溜した水をポンプで循環せしめる循環路の途中に設けてあるエゼクタにおいて生じる減圧を真空チャンバに作用せしめて真空チャンバ内で沸騰した油水混合液から発生した蒸気を該水タンクに導くようにしてあることを特徴とする油水分離装置。2. The oil-water separator according to claim 1, wherein the reduced pressure generated in an ejector provided in the middle of a circulation path for circulating the water stored in the water tank with a pump is applied to the vacuum chamber to mix the oil-water boiling in the vacuum chamber. An oil-water separator, wherein steam generated from the liquid is guided to the water tank.
JP2002163710A 2002-06-05 2002-06-05 Oil / water separator Expired - Fee Related JP3716230B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007249857A (en) * 2006-03-17 2007-09-27 Canon Inc Information processor, its control method, and program
CN102350062A (en) * 2011-07-22 2012-02-15 浙江一火科技有限公司 Separation device for degreased mixed liquid
CN109513235A (en) * 2019-01-10 2019-03-26 成都润亿达环境科技有限公司 A kind of food and drink greasy dirt water separation equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007249857A (en) * 2006-03-17 2007-09-27 Canon Inc Information processor, its control method, and program
JP4667280B2 (en) * 2006-03-17 2011-04-06 キヤノン株式会社 Information processing apparatus, control method therefor, and program
CN102350062A (en) * 2011-07-22 2012-02-15 浙江一火科技有限公司 Separation device for degreased mixed liquid
CN109513235A (en) * 2019-01-10 2019-03-26 成都润亿达环境科技有限公司 A kind of food and drink greasy dirt water separation equipment

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