JP4892657B2 - Oil water separation method and oil water separation device for drain water generated from compressed air - Google Patents

Description

【００６５】
この場合、磁石５０を配設した場合と配設しない場合で差が出た理由は、ドレン水が強力な磁力を通過することで、ドレン水の水の分子の集団（クラスター）が細分化され、この細分化されたことで水分子はそれまで繋いでいた手を離し、手を離したことで結合が切れて化学エネルギーが増加した手の空いた状態となり、この空いた手が上記の効果をもたらしていると考えられる。
【００６６】
（第三実施例）
図３に見られるように、第三実施例が第一実施例と異なる点は、一つ目は、集合管２６１と逆支弁２６５と集合管２６２より構成される配管系の集合管２６１にドレン排出管２１１ａ、２１１ｂ、２１１ｃ、２１１ｄ、２１２ａ、２１２ｂ、２１２ｃ、２１２ｄ、２１３ａ、２１３ｂ、２１３ｃ、２１３ｄ、２１４ａ、２１４ｂ、２１４ｃ、２１４ｄを全て集合させ、その途中に個々に配設したドレントラップ２２２、２３２、２４２、２５２に替えて、集合管２５３、２５４の間に一つだけドレントラップ２６６を配設してその機能を集約したことと、二つ目は、集合管２６２に接続して油水分離槽１０と接続管２７１と逆止弁２７５と接続管２７２と異物捕捉槽２０と接続管２７３を構成したことに替えて、集合管２６４に接続して油分離吸着槽４０と接続管２７７と活性炭収納槽６０と接続管２７８を構成したことである。
【００６７】
ここで、集合管２５３、２５４の間に一つだけドレントラップ２６６を配設してその機能を集約することで、複数のドレントラップ２２２、２３２、２４２、２５２の関係を考慮する必要のない単純な制御が可能となった。
【００６８】
この場合、ドレントラップ２６６に於けるドレン水の排出に関しては、常に定めたサイクルで定めた時間の間行なったり、別のやり方として常に定めたサイクルでドレントラップ２６６より上流の何れかの位置でドレン水の有無を確認しドレン水の存在を確認した場合にのみ定めた時間の間行なうこと等が考えられる。
その際、ドレン水を排水した直後に、更にドレン水の存在を確認したら、更に定めた時間の間ドレン水を排出することも考えられる。
【００６９】
また、油分離吸着槽４０は、油分離吸着槽本体４１上部が大気に開放され、油分離吸着槽本体４１は壁４１ｆ、４１ｇによって完全に分離された油水分離槽４１ｕと第一油吸着槽４１ｖと第二油吸着槽４１ｗの三つの槽４１ｕ、４１ｖ、４１ｗを形成している。
【００７０】
そして、油水分離槽４１ｕには三つの端部を持った導入管である第一導入管４１ａが配設されていて、一端は油分離吸着槽本体４１の底部近辺に位置し、もう一端は油分離吸着槽本体４１上部で大気に開放され、残りの一端は水面上に位置していて第一導入管４１ａ内のドレン水を第一油吸着槽４１ｖに流出するようになっている。
【００７１】
更に、第一油吸着槽４１ｖには三つの端部を持った導入管である第二導入管４１ｂが配設されていて、一端は油分離吸着槽本体４１の底部近辺に位置し、もう一端は油分離吸着槽本体４１上部で大気に開放され、残りの一端は水面上に位置していて第二導入管４１ｂ内のドレン水を第二油吸着槽４１ｗに流出するようになっている。
【００７２】
尚、第二油吸着槽４１ｗには三つの端部を持った導入管である第三導入管４１ｃが配設されていて、一端は油分離吸着槽本体４１の底部近辺に位置し、もう一端は油分離吸着槽本体４１上部で大気に開放され、残りの一端は水面上に位置していて第三導入管４１ｃ内のドレン水を接続管２７７に流出するようになっている。
【００７３】
ここで、第一油吸着槽４１ｖの底部には吸込管４１ｉと放出管４１ｈが形成されている。 そして、吸込管４１ｉと放出管４１ｈの間には、吸込配管３５１ａと、弁３４０と、吸込配管３５１ｂと、油分離吸着槽４０で微細な気泡を作り出しその表面にドレン水に含まれた異物を付着させそれによって水面に浮上した異物を油と共に除去することを目的として高濃度の空気溶解液を油分離吸着槽４０に送り出す為に吸込配管３５１ｂからドレン水とそれに接続して空気吸入管３１５から空気を吸引し混合と攪拌と加圧を行なう渦流ポンプ３１０と、高濃度空気溶解液配管３５２と、渦流ポンプ３１０の下流で大きい気泡を分離する分離タンク３２０と、高濃度空気溶解液配管３５３ａと、弁３５０と、高濃度空気溶解液配管３５３ｂを記載の順に接続している。
【００７４】
また、第一油吸着槽４１ｖと第二油吸着槽４１ｗの上部の各々には、微細な気泡の表面にドレン水に含まれた油や他の異物を付着させることで水面に浮上した異物を油や他の異物と共に吸着し除去することを目的とした油吸着材４２ａ、４２ｂが保持出来るように、網４１ｄ、４１ｅを配設している。 この場合、網４１ｄ、４１ｅの位置としては、斜めに位置させなくとも第一油吸着槽４１ｖと第二油吸着槽４１ｗの底部に平行に位置させても構わない。
【００７５】
一方、活性炭収納槽６０は、活性炭収納槽本体６１の上下に空間部６１ｚを形成する為に、活性炭収納槽本体６１の下部から、支柱６１ｂと、多孔板６１ａと、活性炭６２と、多孔板６１ａと、支柱６１ｂを記載の順に構成している。
【００７６】
尚、油分離吸着槽４０の各槽４１ｕ、４１ｖ、４１ｗの水面と、接続管２７８の最も高い位置と、清水管２７４の最も高い位置の関係は、油分離吸着槽４０に流入したドレン水が清水管２７４より落差の関係で自然に排出可能なように、同一または順次低くなっていることが必要である。
【００７７】
本発明による、圧縮空気より発生したドレン水の油水分離方法および油水分離装置は前述したように構成されており、以下に、その動作について詳細に説明する。
【００７８】
先ず、エアーコンプレッサ１１０を構成しているモータを作動させると、モータの回転はコンプレッサに伝えられ圧縮空気を作り出す。 ここで、作り出された圧縮空気は、圧縮空気配管２０１とアフタークーラ１２０と圧縮空気配管２０２とエアータンク１３０と圧縮空気配管２０３とドライヤー１４０と圧縮空気配管２０４とフィルター１５０と圧縮空気配管２０５を経由して、その先端のエアーモータやエアーシリンダ等のアクチュエータに対し必要に応じて乾燥した清浄な圧縮空気を送り出すことが出来るようになっている。
【００７９】
一方、アフタークーラ１２０やエアータンク１３０やドライヤー１４０やフィルター１５０で圧縮空気より発生したドレン水は圧縮空気と共に、ドレン排出管２１１ａ、２１２ａ、２１３ａ、２１４ａと弁２２１、２３１、２４１、２５１とドレン排出管２１１ｅ、２１２ｅ、２１３ｅ、２１４ｅと逆止弁２２３、２３３、２４３、２５３とドレン排出管２１１ｄ、２１２ｄ、２１３ｄ、２１４ｄを経由して集合管２６３に合流し、更に、ドレントラップ２６６と集合管２６４を経由して、油分離吸着槽４０と活性炭収納槽６０とエマルジョン破壊油吸着槽３０から構成される油水分離装置１Ｃに送られ油や塵を含む各種の異物を除去し、清水管２７４から河川にそのまま排出しても問題のないような清浄な清水にすることが出来るようになっている。
【００８０】
この場合、油分離吸着槽４０では、油水分離槽４１ｕに流入したドレン水は、水より軽い油を水面に浮上させ水より重い各種の異物を底部に沈殿させて比較的綺麗なドレン水となって、第一導入管４１ａの下部の端部より水面まで押し上げられ水面と平行に分岐している端部より第一油吸着槽４１ｖに送りこまれる。
【００８１】
次に、第一油吸着槽４１ｖに流入したドレン水は、渦流ポンプ３１０によって作り出された高濃度空気溶解液を放出管４１ｈから放出されることで微細な気泡を作り出しながら、その表面にドレン水に含まれた油や他の異物を付着させて水面に浮上し、水面に配設された油吸着材４２ａによって吸着されるようになっている。 そこで、油吸着材４２ａを収めている網４１ｄより下部の比較的綺麗なドレン水を第二導入管４１ｂの下部の端部より水面まで押し上げ水面と平行に分岐している端部より第二油吸着槽４１ｗに送りこまれる。
【００８２】
更に、第二油吸着槽４１ｗに流入したドレン水は、油吸着材４２ｂを経由し、油吸着材４２ｂを収めている網４１ｅより下部の比較的綺麗なドレン水を第三導入管４１ｃの下部の端部より水面まで押し上げ水面と平行に分岐している端部より接続管２７７に送りこまれる。
【００８３】
そして、接続管２７７によって活性炭収納槽６０送りこまれたドレン水は、活性炭６２によって油や固形の異物や色素や匂い等の各種に異物を除去出来るようになっている。
【００８４】
（第四実施例）
図４に見られるように、第四実施例が第三実施例と異なる点は、接続管２７７と活性炭収納槽６０と接続管２７８の構成に替えて、接続管２７９と異物捕捉槽２０と接続管２７３の構成としたことである。 尚、動作に関しても、第三実施例の活性炭収納槽６０に対し第二実施例の異物捕捉槽２０が違うだけであるので省略する。
【００８５】
最後に、第一実施例と第二実施例と第三実施例と第四実施例において、相互に異なっている、ドレントラップ２２２，２３２，２４２，２５２と関係する機器およびドレントラップ２６６と関係する機器、油水分離槽１０および油分離吸着槽４０、異物捕捉槽２０および磁石５０および活性炭収納槽６０に関しては、各々替えて使用することは可能である。
【００８６】
【発明の効果】
以上の説明から明らかなように、本発明により、下記のような効果をあげることができる。
【００８７】
第一に、渦流ポンプと分離タンクの配設によって、油水分離槽や油分離吸着槽に微細な気泡を作り出し、その気泡にドレン水の異物を付着させ、浮上させることで、エマルジョン化した油も容易に除去する事が可能となった。
【００８８】
第二に、油分離吸着槽に油吸着材を収納することで、早期の油の除去が可能となった。
【００８９】
第三に、異物捕捉槽および磁石および活性炭収納槽等の配設によって、エマルジョン化した油等の除去が容易となった。
【００９０】
第四に、エマルジョン破壊油吸着槽の配設によって、エマルジョン化した油等の除去が容易となった。
【００９１】
第五、ドレントラップを一個所に集中させることによって、制御が容易となった。
【図面の簡単な説明】
【図１】圧縮空気とドレン水の流れを示した全体と本願発明の第一の油水分離装置の関係を示した図
【図２】圧縮空気とドレン水の流れを示した全体と本願発明の第二の油水分離装置の関係を示した図
【図３】圧縮空気とドレン水の流れを示した全体と本願発明の第三の油水分離装置の関係を示した図
【図４】圧縮空気とドレン水の流れを示した全体と本願発明の第四の油水分離装置の関係を示した図
【図５】第三と第四の油水分離装置に関係する油分離吸着槽の詳細図
【符号の説明】
１Ａ・・・・・・油水分離装置
１Ｂ・・・・・・油水分離装置
１Ｃ・・・・・・油水分離装置
１Ｄ・・・・・・油水分離装置
１０・・・・・・油水分離槽
１１・・・・・・油水分離槽本体
１１ａ・・・・・透明管
１１ｂ・・・・・吸入管
１１ｃ・・・・・吐出管
１１ｄ・・・・・隔壁
１１ｅ・・・・・放出管
１１ｆ・・・・・吸込管
１１ｘ・・・・・油浮上分離室
１１ｙ・・・・・水貯槽室
１２・・・・・・圧力計
１３・・・・・・浮上油取出弁
２０・・・・・・異物捕捉槽
２１・・・・・・異物捕捉槽本体
２１ａ・・・・・流入路
２１ｂ・・・・・流出路
２２・・・・・・フィルターエレメント
２３・・・・・・圧力計
２４・・・・・・圧力計
３０・・・・・・エマルジョン破壊油吸着槽
３１・・・・・・エマルジョン破壊油吸着槽本体
３１ｃ・・・・・多孔板
３１ｄ・・・・・支柱
３１ｅ・・・・・中間多孔板
３１ｆ・・・・・支持材
３１ｚ・・・・・空間部
３２・・・・・・エマルジョン破壊粒子付油吸着材
３３・・・・・・油吸着材
３４・・・・・・活性炭
４０・・・・・・油分離吸着槽
４１・・・・・・油分離吸着槽本体
４１ａ・・・・・第一導入管（導入管）
４１ｂ・・・・・第二導入管（導入管）
４１ｃ・・・・・第三導入管（導入管）
４１ｄ・・・・・網
４１ｅ・・・・・網
４１ｆ・・・・・壁
４１ｇ・・・・・壁
４１ｈ・・・・・放出管
４１ｉ・・・・・吸込管
４１ｕ・・・・・油水分離槽（槽）
４１ｖ・・・・・第一油吸着槽（槽）
４１ｗ・・・・・第二油吸着槽（槽）
４２ａ・・・・・油吸着材
４２ｂ・・・・・油吸着材
５０・・・・・・磁石
６０・・・・・・活性炭収納槽
６１・・・・・・活性炭収納槽本体
６１ａ・・・・・多孔板
６１ｂ・・・・・支柱
６１ｚ・・・・・空間部
６２・・・・・・活性炭
１１０・・・・・エアーコンプレッサ
１２０・・・・・アフタークーラ（ドレン水が発生する機器）
１３０・・・・・エアータンク（ドレン水が発生する機器）
１４０・・・・・ドライヤー（ドレン水が発生する機器）
１５０・・・・・フィルター（ドレン水が発生する機器）
２０１・・・・・圧縮空気配管
２０２・・・・・圧縮空気配管
２０３・・・・・圧縮空気配管
２０４・・・・・圧縮空気配管
２０５・・・・・圧縮空気配管
２１１ａ・・・・ドレン排出管
２１１ｂ・・・・ドレン排出管
２１１ｃ・・・・ドレン排出管
２１１ｄ・・・・ドレン排出管
２１２ａ・・・・ドレン排出管
２１２ｂ・・・・ドレン排出管
２１２ｃ・・・・ドレン排出管
２１２ｄ・・・・ドレン排出管
２１３ａ・・・・ドレン排出管
２１３ｂ・・・・ドレン排出管
２１３ｃ・・・・ドレン排出管
２１３ｄ・・・・ドレン排出管
２１４ａ・・・・ドレン排出管
２１４ｂ・・・・ドレン排出管
２１４ｃ・・・・ドレン排出管
２１４ｄ・・・・ドレン排出管
２２１・・・・・弁
２２２・・・・・ドレントラップ
２２３・・・・・逆止弁
２３１・・・・・弁
２３２・・・・・ドレントラップ
２３３・・・・・逆止弁
２４１・・・・・弁
２４２・・・・・ドレントラップ
２４３・・・・・逆止弁
２５１・・・・・弁
２５２・・・・・ドレントラップ
２５３・・・・・逆止弁
２６１・・・・・集合管
２６２・・・・・集合管
２６３・・・・・集合管
２６４・・・・・集合管
２６５・・・・・逆止弁
２６６・・・・・ドレントラップ
２７１・・・・・接続管
２７２・・・・・接続管
２７３・・・・・接続管
２７４・・・・・清水管
２７５・・・・・逆止弁
２７６・・・・・接続管
２７７・・・・・接続管
２７８・・・・・接続管
３１０・・・・・渦流ポンプ
３１５・・・・・空気吸入管
３２０・・・・・分離タンク
３３０・・・・・弁
３４０・・・・・弁
３５０・・・・・弁
３５１・・・・・吸込配管
３５１ａ・・・・吸込配管
３５１ｂ・・・・吸込配管
３５２・・・・・高濃度空気溶解液配管
３５３・・・・・高濃度空気溶解液配管
３５３ａ・・・・高濃度空気溶解液配管
３５３ｂ・・・・高濃度空気溶解液配管[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method and an apparatus for separating water from drain water generated from compressed air. More specifically, the present invention relates to an apparatus for separating water and oil. The present invention relates to a technique for causing emulsion breakage that releases bonds.
[0002]
[Prior art]
Conventionally, as a technique relating to an oil-water separation method and an oil-water separation apparatus for drain water generated from compressed air, there have been many techniques for separating foreign substances lighter than water and foreign substances heavier than water from dirty drain water.
[0003]
In addition, there were filters, oil adsorbents, electrolysis and chemicals.
[0004]
In addition, as a technique using an oil adsorbent with emulsion breaking particles, as shown in Japanese Patent Application Laid-Open No. 54-6352, treatment with a treatment material in which amine or the like is attached to a support, A method of separating oil and water by performing two-stage treatment such as treatment with an oil adsorbent such as polypropylene after coarsening or breaking the emulsion particles has been shown.
[0005]
Furthermore, as another technique using an oil adsorbent with emulsion breaking particles, as shown in Japanese Patent Application Laid-Open No. 2001-113269, an oil adsorbing layer composed of an oil adsorbent having relatively low hydrophilicity and an emulsion treatment are used. There has been shown an oil-water separator in which a plurality of sets of emulsion decomposition layers made of a material or a relatively hydrophilic oil adsorbent are alternately laminated.
[0006]
[Problems to be solved by the invention]
However, the conventional oil-water separation method and apparatus for separating water generated from compressed air have the following problems.
[0007]
First, separation of oil from drained water that is emulsified by the combination of minute oils with water is based on the difference in specific gravity between water, oil and foreign matter, by filters, by oil adsorbents, etc. It was almost impossible with a simple device such as. Further, the clogging due to the foreign matter is early, and the maintenance at that time is complicated.
[0008]
Secondly, electrolysis and chemicals required more completeness and the higher the cost, the more completeness was required.
[0009]
Thirdly, combining these methods to form an oil-water separator improves processing capacity, including emulsion breakage, but tends to be large and expensive, creating an efficient device. I had a hard time.
[0010]
Fourthly, in the two-stage process of emulsion breakage and oil adsorption, as disclosed in Japanese Patent Application Laid-Open No. Sho 54-6352, it is specified by selecting a flow path through which drain water easily flows during the oil adsorption process. As a result, it was often necessary to replace the adsorbent at an early stage. In addition, because the emulsion breakage treatment material has more resistance than the oil adsorbent, the emulsion breakage treatment material has been reduced in capacity to balance the two, but on the other hand, it is not suitable for drainage water that is very dirty. The capacity of the emulsion breaking treatment material needs to be increased, and when trying to make it extremely large, when drain water flows, there is a problem that the resistance is not balanced.
[0011]
Fifth, in the oil-water separation apparatus in which a plurality of sets of oil adsorption layers and emulsion decomposition layers are alternately stacked, as seen in the published patent publication of JP-A-2001-113269, the treatment material for emulsion breakage is more resistant than the oil adsorption material. Therefore, the thickness of the emulsion decomposition layer was reduced in order to balance the two according to the resistance during flow.On the other hand, the thickness of the emulsion decomposition layer was reduced for dirty drain water. When it is necessary to make it thick, and when trying to make it extremely thick, there is a problem that when drain water flows, the resistance is not balanced.
The present invention aims to solve such problems.
[0012]
[Means for Solving the Problems]
The present invention includes an oil floating separation chamber 11x that forms a suction pipe 11b for introducing drain water and processes separation of oil contained in the drain water due to a difference in specific gravity, and is divided by the oil floating separation chamber 11x and the partition wall 11d. A water storage chamber 11y having a discharge pipe 11c connected between the tip of the partition wall 11d and the bottom of the oil / water separation tank main body 11 in a state where drain water can enter and exit and which supplies the treated drain water to the connection pipe 271. The oil-water separation tank 10 is pressure-sealed, and includes a suction pipe 11f that sucks drain water provided in the water storage chamber 11y, an air suction pipe 315 that sucks air, and the air sucked by the air suction pipe 315 and the suction A vortex pump 310 that mixes, stirs and pressurizes the drain water sucked from the pipe 11f, a separation tank 320 that separates large bubbles, and the oil floating separation chamber 11x are high. In order to remove any oil that has been emulsified during the oil separation process, a high-concentration air separate from the drain water inflow is provided by a device connected in this order to the discharge pipe 11e that discharges the air solution. It is characterized by adhering foreign matter contained in the drain water to the surface of the fine bubbles that appear by releasing the dissolved liquid, thereby removing the foreign matter that floated on the water surface together with oil, and also floated on the water surface The above-mentioned problem has been solved by removing oil and solidified foreign matter again from the drain water from which foreign matter has been removed together with oil, and then adsorbing oil after performing emulsion breakage.
[0013]
The present invention also provides A suction pipe 11b for introducing drain water is formed. Oil contained in drain water due to specific gravity difference of Separation Process Do An oil levitation separation chamber 11x, a drain that is separated by the oil levitation separation chamber 11x and the partition wall 11d and connected between the tip of the partition wall 11d and the bottom of the oil / water separation tank main body 11 in a state in which drain water can enter and exit. Pressurized and sealed comprising a water storage chamber 11y having a discharge pipe 11c for sending water to the connection pipe 271. Oil / water separation tank 10 The suction pipe 11f for sucking drain water provided in the water storage chamber 11y, the air suction pipe 315 for sucking air, and the air suction pipe 315 With air Sucked from the suction pipe 11f Drain water With Vortex pump 310 for mixing, stirring and pressurization , Separation tank 320 for separating large bubbles, And a discharge pipe 11e for discharging a high-concentration air solution to the oil floating separation chamber 11x is connected in this order. A foreign matter capturing tank 20 or activated carbon storage tank 60 for removing oil and solidified foreign substances and an emulsion breaking oil adsorption tank 30 for adsorbing emulsified oil are disposed downstream of the oil / water separation tank 10 in the order described. In addition, an oil separation adsorption tank 40 for separating oil contained in drain water due to a difference in specific gravity, and fine bubbles are created in the oil separation adsorption tank 40 in order to remove even a small amount of emulsified oil. Air and drain water are used to send a high-concentration air solution to the oil separation / adsorption tank 40 for the purpose of adhering foreign matter contained in the drain water to the surface and thereby removing foreign matter floating on the water surface together with oil. The vortex pump 310 that performs suction, mixing, agitation, and pressurization, the separation tank 320 that separates large bubbles downstream of the vortex pump 310, and the oil separation adsorption tank 40 are supplied with oil. Oil adsorbents 42a and 42b to be attached, and the oil separation / adsorption tank 40 includes an oil / water separation tank 41u that separates oil contained in drain water due to a difference in specific gravity, a suction pipe 41i that sucks drain water, and a high concentration A discharge pipe 41h for sending out the air solution is formed, and a first oil adsorption tank 41v containing the oil adsorbent 42a and a second oil adsorption tank 41w containing the oil adsorbent 42b are formed, and the tank 41u is formed. 41v and 41w are provided with introduction pipes 41a, 41b and 41c arranged in the tanks 41u, 41v and 41w for sending drain water from the bottom and letting it drain at the position of the water surface. The above problem has been solved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An oil-water separation method and an oil-water separation device for drain water generated from compressed air according to the present invention will be described in detail with reference to the drawings.
Here, FIG. 1 is a diagram showing the relationship between the whole flow of compressed air and drain water and the first oil-water separator of the present invention, and FIG. 2 shows the flow of compressed air and drain water. FIG. 3 shows the relationship between the whole of the flow of compressed air and drain water and the third oil-water separator of the present invention. FIG. 4 is a diagram showing the relationship between the entire flow of compressed air and drain water and the fourth oil-water separator of the present invention, and FIG. 5 is a diagram showing the third and fourth oil-water. It is detail drawing of the oil separation adsorption tank relevant to a separation apparatus.
[0015]
(First Example)
As shown in FIG. 1, reference numeral 110 denotes an air compressor, which is not specifically shown, and is composed of a motor and a compressor. By transmitting the rotation of the motor to the compressor, the compressed air is taken in. Was producing.
[0016]
Here, the compressed air produced by the air compressor 110 is compressed air piping 201, an after cooler 120 that cools the compressed air, a compressed air piping 202, an air tank 130 that stores the compressed air, and a compressed air piping 203. A dryer 140 that dries compressed air, a compressed air pipe 204, a filter 150 that removes various foreign matters such as oil and dust from the compressed air, a compressed air pipe 205, an air motor, an air cylinder, etc. The dry compressed air can be supplied to various pneumatic devices that constitute the actuator.
[0017]
On the other hand, from the aftercooler 120, which is a device for generating drain water, a drain discharge pipe 211a for discharging drain water, a valve 221 that can be manually opened and closed, a drain discharge pipe 211b, and opening and closing by the operation and magnetic force of the motor. An electric drain trap 222 that operates and discharges drain water together with compressed air, a drain discharge pipe 211c, a check valve 223 that prevents the drain water from flowing backward from upstream to downstream, and a drain discharge pipe 211d Then, it is connected to the collecting pipe 261.
[0018]
Further, from the lower part of the air tank 130 which is a device for generating drain water, a drain discharge pipe 212a for discharging drain water, a valve 231 that can be manually opened and closed, a drain discharge pipe 212b, and the operation and magnetic force of the motor. An electric drain trap 232 that opens and closes and discharges drain water together with compressed air, a drain discharge pipe 212c, a check valve 233 that prevents the drain water from flowing backward from upstream to downstream, and a drain discharge pipe 212d. And is connected to the most upstream of the collecting pipe 261.
[0019]
Further, from the dryer 140, which is a device that generates drain water, a drain discharge pipe 213a for discharging the drain water, a valve 241 that can be manually opened and closed, a drain discharge pipe 213b, and an opening / closing operation by the operation of the motor and magnetic force. Through an electric drain trap 242 that discharges drain water together with compressed air, a drain discharge pipe 213c, a check valve 243 that prevents the drain water from flowing backward from upstream to downstream, and a drain discharge pipe 213d. Are connected to the collecting pipe 261.
[0020]
In addition, from the filter 150, which is a device that generates drain water, a drain discharge pipe 214a that discharges drain water, a valve 251 that can be manually opened and closed, a drain discharge rod 214b, and an opening / closing operation by the operation and magnetic force of the motor. An electric drain trap 252 that operates and discharges drain water together with compressed air, a drain discharge pipe 214c, a check valve 253 that prevents the drain water from flowing back from upstream to downstream, and a drain discharge pipe 214d Then, it is connected to the collecting pipe 261.
[0021]
It should be noted that the drain water in the drain traps 222, 232, 242, and 252 is always discharged for a predetermined time in a predetermined cycle, or as another method, the drain traps 222, 232, and 242 are always determined in a cycle. It is conceivable to carry out for a predetermined time only when the presence or absence of drain water is confirmed at any position upstream from 252 and the presence of drain water is confirmed. At that time, if the presence of the drain water is further confirmed immediately after the drain water is drained, the drain water may be discharged for a predetermined time.
[0022]
Here, the collecting pipe 261 includes a check valve 265 that prevents the drain water from flowing back from upstream to downstream, the collecting pipe 262, and an oil / water separator 1A that separates various foreign matters such as oil and dust of the present invention. The fresh water can be discharged from the fresh water pipe 274 via the. Further, the fresh water discharged from the fresh water pipe 274 is purified to such an extent that it can be discharged into a river or the like as it is.
[0023]
In this case, the oil / water separator 1A includes an oil / water separation tank 10, a foreign matter catching tank 20, and an emulsion breaking oil adsorption tank 30. Between the oil / water separating tank 10 and the foreign matter catching tank 20, there is a connecting pipe 271 and drain water. A check valve 275 that prevents a reverse flow from downstream to upstream is connected by a connection pipe 272, and the foreign matter capturing tank 20 and the emulsion breaking oil adsorption tank 30 are connected by a connection pipe 273.
[0024]
However, the foreign matter capturing tank 20 and the emulsion breaking oil adsorbing tank 30 are not necessarily limited to one each, and may be two, three, or more. In that case, the foreign matter catching tank 20 and the emulsion breaking oil adsorption tank 30 arranged in series one by one may be configured in parallel, or a plurality of foreign matter catching tanks 20 arranged in parallel and the emulsion breaking oil adsorbing tank. It is also conceivable to construct a series of 30 units in parallel.
[0025]
By the way, the oil / water separation tank 10 forms two chambers, an oil floating separation chamber 11x and a water storage chamber 11y, by partitioning the oil / water separation tank body 11 by a partition wall 11d, and the inside of the sealed oil / water separation tank body 11 In the upper part, only compressed air, which is a gas, can freely enter and leave between the oil floating separation chamber 11x and the water storage chamber 11y at a portion further above the liquid level, and in the lower part, drain water, which is a liquid, is at the tip of the partition wall 11d. Between the oil floating separation chamber 11x and the water storage chamber 11y can be freely entered and exited.
[0026]
The upper part of the oil floating separation chamber 11x protrudes from the liquid surface, and the other pipe end of the suction pipe 11b having one pipe end connected to the collecting pipe 262 is located so that drain water flows. Yes. Therefore, in the oil floating separation chamber 11x, oil lighter than water floats on the liquid surface, and foreign matters heavier than water settle on the bottom. In this case, the oil floating on the liquid surface can be discharged by opening the floating oil take-off valve 13.
[0027]
On the other hand, in the water storage chamber 11y, one end of the discharge pipe 11c is positioned on the liquid surface, and the tip of the lower partition 11d between the oil floating separation chamber 11x and the water storage chamber 11y and the bottom of the oil / water separation tank main body 11 are located. The drain water from which the oil lighter than water and the foreign material heavier than water were removed flows in from the communicating part. However, the emulsified oil was dissolved in the drain water, and it flowed as it was without being separated by such a method.
[0028]
Here, the other pipe end of the discharge pipe 11 c is connected to the connection pipe 271. Accordingly, the relatively clean drain water from which oil is removed located above one end of the discharge pipe 11c collected on the liquid surface of the water storage chamber 11y is divided into the oil floating separation chamber 11x and the water storage chamber 11y. The pressure of compressed air that is sealed in communication with the gas enters from one end of the discharge pipe 11c and is sent together with the compressed air from the other end to the connecting pipe 271. In order to manage the pressure of the compressed air in the upper part of the oil floating separation chamber 11x and the upper part of the water storage chamber 11y, a pressure gauge 12 is disposed on the upper part of the oil / water separation tank body 11.
[0029]
Further, on the outer periphery of the oil / water separation tank main body 11, as seen in FIG. 1, a transparent transparent tube 11 a that is positioned in the vertical direction and communicates at four locations including the upper and lower ends of the oil / water separation tank main body 11. Is forming. In this case, the purpose of the transparent tube 11a is to confirm the state of contamination of drain water in the oil floating separation chamber 11x immediately after flowing into the oil floating separation chamber 11x by visual or optical means. Therefore, the transparent tube 11a may be made of a transparent material such as glass or plastic.
[0030]
In addition, the communication part of the transparent tube 11a and the oil-water separation tank main body 11 is not necessarily limited to four places, and may be two places, three places, five places, or more. Further, as a means for confirming the degree of contamination, an optical method such as irradiating light and judging by transmitted light or reflected light is conceivable.
[0031]
A suction pipe 11f and a discharge pipe 11e are also formed in the oil / water separation tank main body 11 constituting the oil / water separation tank 10. And between the suction pipe 11f and the discharge pipe 11e, a fine bubble is created in the suction pipe 351 and the water separation tank 10, and the foreign matter contained in the drain water is attached to the surface, thereby the foreign matter floating on the water surface. In order to remove the high-concentration air solution to the oil / water separation tank 10 for the purpose of removal together with oil, drain water is connected from the suction pipe 351 and air is sucked from the air suction pipe 315 and mixed, stirred and pressurized. The vortex pump 310 to be performed, the high-concentration air solution pipe 352, the separation tank 320 for separating large bubbles downstream of the vortex pump 310, and the high-concentration air solution pipe 353 are connected in the order described.
[0032]
Next, the foreign matter catching tank 20 includes a foreign matter catching tank main body 21, a filter element 22, and pressure gauges 23 and 24. In this case, the foreign matter catching tank main body 21 is configured to be hermetically sealed with a main body portion and a lid portion, and an inflow passage 21a and an outflow passage 21b are formed in the lid portion of the foreign matter catching tank main body 21, respectively. Are connected to pressure gauges 23 and 24.
[0033]
In this case, the pressure of the pressure gauges 23 and 24 is set to any value of 0.01 to 0.7 MPa together with the pressure of the pressure gauge 12 of the oil / water separation tank 10. However, pressure loss due to the connecting pipes 271, 272, etc. between the pressure gauges 12, 23, 24 needs to be somewhat considered. Here, if the set pressure is too low, the drain water cannot be discharged as fresh water through the oil / water separator 1A. If the set pressure is too high, the drain water constitutes the oil / water separator 1A. When passing through the emulsion breaking oil adsorption tank 30, which will be described later, there is a problem that a specific flow path is formed.
[0034]
The filter element 22 is housed inside the main body portion of the foreign matter catching tank main body 21 and is fixed at the lid portion of the foreign matter catching tank main body 21. Accordingly, the drain water from the oil / water separation tank 10 flowing into the foreign matter catching tank 20 is always discharged from the foreign matter catching tank 20 through the filter element 22 from the outside to the inside. Incidentally, when drain water passes through the filter element 22, some of the emulsified oil breaks the emulsion by releasing the bond between water and oil. Here, the two pressure gauges 23 and 24 determine the replacement time of the filter element 22 based on the pressure difference. However, the foreign matter catching tank 20 may be not installed.
[0035]
Further, in the emulsion breaking oil adsorption tank 30, an activated carbon 34 for removing pigments and off-flavors is disposed in the emulsion breaking oil adsorption tank main body 31 so as to block the flow of drain water in substantially the entire cross section at the center. The oil adsorbent 32 with emulsion breaking particles to which the emulsion breaking particles intended to break the oil and the oil adsorbing material 33 intended to adsorb oil are mixed in a substantially uniform manner and are stored before and after the activated carbon 34. is there.
[0036]
Here, the emulsion breaking oil adsorption tank main body 31 is made of a transparent material such as glass or plastic that can visually check the internal situation from the outside, or made of glass or plastic so that the internal situation can be visually checked from the outside. It is also possible to insert a transparent material such as plastic.
[0037]
In this case, the oil adsorbent 32 with emulsion breaking particles releases the binding between oil and water by breaking the emulsion of the drained water that is emulsified by the action of the emulsion breaking particles and the minute oil is combined with water. The oil thus absorbed is adsorbed by the oil adsorbent and the oil adsorbent 33 constituting the oil adsorbent 32 with emulsion breaking oil particles.
Therefore, the oil adsorbent 32 with emulsion breaking particles and the oil adsorbent 33 are scattered, so that the oil can be removed by completely separating and adsorbing the oil from the emulsified oil.
[0038]
On the other hand, the granular activated carbon 34 is intended to adsorb or remove pigments and off-flavors. As for the position where the activated carbon 34 is filled in the emulsion breaking oil adsorbing tank 30, the activated carbon 34 gets dirty early in the uppermost stream, and the dirty water seems to flow by flowing out the activated carbon 34 itself in the lowermost stream. For this reason, it is desirable to be positioned approximately in the center.
[0039]
Here, as the structure of the emulsion breaking oil adsorption tank main body 31, the drain water which is liquid flows into the emulsion breaking oil adsorption tank main body 31 from the inflow port and is discharged from the outflow port, and then the emulsion breaking oil adsorption tank main body. Space parts 31z are secured on the inlet side and the outlet side which are both ends of the emulsion breaking oil adsorption tank main body 31 so as to flow uniformly in the inside 31.
[0040]
Accordingly, in order to secure the space portion 31z at both ends, two porous plates 31c having a large number of small holes are prepared, and the porous plate 31c and the end portions at both ends of the emulsion breaking oil adsorption tank main body 31 are prepared. Between the emulsion breaking oil adsorbing tank main body 31, a cylindrical column 31d having a smaller diameter is provided to support the porous plate 31c, and the oil adsorbing material 32 with emulsion breaking particles, the oil adsorbing material 33, and the activated carbon 34 are divided into two porous holes. It is accommodated between the plates 31c. However, the column 31d is not necessarily limited to a cylindrical shape, and may be any shape as long as the space 31z can be secured. As the perforated plate 31c, a punching plate in which many small holes are formed, a ceramic resin, or the like can be considered.
[0041]
Also, the oil adsorbent 32 with emulsion breaking particles and the oil adsorbent 33 have increased resistance as they absorb foreign matters such as oil, and are pressed further toward the downstream while being compressed. The function of breaking oil and oil adsorption is reduced.
[0042]
Therefore, in order to prevent this even a little, an intermediate perforated plate 31e having a large number of small holes is arranged in the substantially central portion of the emulsion breaking oil adsorption tank main body 31 so that the liquid flow can be blocked vertically. In order to support the intermediate porous plate 31e, a disk-shaped support material 31f having a smaller diameter than the emulsion breaking oil adsorption tank main body 31 is disposed between the intermediate porous plate 31e and the porous plate 31c, thereby providing oil with emulsion breaking particles. The adsorbent 32 and the oil adsorbent 33 are prevented from being compressed.
[0043]
However, the position of the intermediate perforated plate 31e may be slightly around the center of the emulsion breaking oil adsorbing tank main body 31. Further, the support material 31f is not limited to a cylindrical shape, and any shape can be used as long as the intermediate porous plate 31e fixed with several bolts can be supported.
[0044]
The emulsion breaking oil adsorbing tank main body 31 is best filled with activated carbon 34 immediately after the downstream of the intermediate porous plate 31e, but it is also close to the best when it is charged immediately before the upstream of the intermediate porous plate 31e. Is seen. On the other hand, even if the intermediate porous plate 31e is filled somewhat before and after, a considerable effect is seen, and even if it is filled in either part of both terminals of the emulsion breaking oil adsorption tank main body 31, a considerable effect is seen.
[0045]
Here, as a method of making the oil adsorbent 32 with emulsion breaking particles in which emulsion breaking particles are adhered to the adsorbent, a solution in which emulsion breaking particles such as amine and barium sulfate are dissolved in a solvent is adhered to the adsorbent. After that, a method of evaporating and drying the solvent is generally used, but there is also a method of spraying the solution onto the oil adsorbent 33 in a mist form. Further, a method is also conceivable in which the emulsion breaking particles such as amine and barium sulfate are attached to the adsorbent in a state of being uniformly mixed in the liquid rather than being dissolved.
[0046]
In this case, the emulsion breaking particles and the oil adsorbing material may be filled so as to be dispersed between the adsorbing materials without changing the state of the emulsion adsorbing material 32 with the emulsion breaking particles. Also in this case, the activated carbon 34 may be disposed immediately before or immediately upstream of the intermediate porous plate 31c or in the vicinity thereof, or may be disposed immediately before or immediately before the porous plate 31c at the inlet or outlet.
[0047]
However, in any of the above cases, a configuration in which the activated carbon 34 is not disposed is also conceivable.
[0048]
On the other hand, with respect to the amine used in the present invention, an amine compound or a derivative thereof can be considered, and when the amine compound or the derivative thereof is 25 ° C., it is preferably solid, but the compound is non-solid at 25 ° C. However, it may be a compound that becomes a solid in a mixture with another compound. That is, the compounds may be used alone or in combination of two or more.
[0049]
These amine compounds and derivatives thereof are preferably one amine, two amines, three amines, and derivatives thereof, more preferably one amine, two amines, and derivatives thereof, and particularly preferably. A kind of amine (eg stearylamine) and its derivatives.
[0050]
Further, as the oil adsorbing material used for the oil adsorbing material 33 and the oil adsorbing material 32 with emulsion breaking particles, one made of polypropylene or polystyrene fibers can be considered. However, the oil adsorbent used in the oil adsorbent 33 and the oil adsorbent 32 with emulsion breaking particles is not limited to these, and has an oil adsorption function and is insoluble in water. Others can be used if necessary.
[0051]
The method and apparatus for separating drain water generated from compressed air according to the present invention is configured as described above, and its operation will be described in detail below.
[0052]
First, when the motor constituting the air compressor 110 is operated, the rotation of the motor is transmitted to the compressor to create compressed air. Here, the produced compressed air passes through the compressed air pipe 201, the aftercooler 120, the compressed air pipe 202, the air tank 130, the compressed air pipe 203, the dryer 140, the compressed air pipe 204, the filter 150, and the compressed air pipe 205. Thus, it is possible to send dry and compressed air as needed to an actuator such as an air motor or an air cylinder at the tip.
[0053]
On the other hand, drain water generated from the compressed air by the aftercooler 120, the air tank 130, the dryer 140, and the filter 150 together with the compressed air, drain discharge pipes 211a, 212a, 213a, 214a, valves 221, 231, 241, 251 and drain discharge. Pipes 211b, 212b, 213b, 214b, drain traps 222, 232, 242, 252 and drain discharge pipes 211c, 212c, 213c, 214c, check valves 223, 233, 243, 253 and drain discharge pipes 211d, 212d, 213d, An oil / water separator 1A composed of the oil / water separation tank 10, the foreign matter catching tank 20, and the emulsion breaking oil adsorbing tank 30 is joined to the collecting pipe 261 via 214d, and further via the check valve 265 and collecting pipe 262. Removes various foreign substances including oil and dust sent to the So that the can be from 4 to clean fresh water, such as there is no problem even if directly discharged into the river.
[0054]
In this case, in the oil / water separator 1A, first, in the oil floating separation chamber 11x of the oil / water separation tank 10, oil lighter than water is floated on the water surface, and various foreign matters heavier than water are precipitated at the bottom, and the oil floating separation chamber 11x. A relatively clean drain water from which oil and various foreign substances have been removed passes between the tip of the partition wall 11d formed between the water storage tank chamber 11y and the bottom of the oil / water separation tank body 11 so as to be sent into the water storage chamber 11y. It has become. However, it is dissolved in this drain water and mixed with emulsified oil.
[0055]
Therefore, in order to remove this emulsified oil even a little, between the suction pipe 11f and the discharge pipe 11e formed in the oil / water separation tank body 11 of the oil / water separation tank 10, the suction pipe 11f and Highly concentrated air solution is created by simultaneously sucking in clean drain water in the water storage chamber 11y from the suction pipe 351 and air from the air suction pipe 315 at the same time, and mixing, stirring and pressurizing. The large air bubbles are separated by feeding the air dissolved liquid into the separation tank 320, and finally this high concentration air dissolved liquid is discharged from the discharge pipe 11e to the oil floating separation chamber 11x.
[0056]
In this way, the supersaturated air is released into fine bubbles by depressurizing the high-concentration air-dissolved liquid into the dirty drain water of the oil flotation separation chamber 11x at a stretch and reducing the flow rate of the liquid. It is intended to float and collect by adhering foreign matter such as oil or solid matter in the drain water contaminated to the bubbles.
[0057]
On the other hand, the compressed air sent to the oil / water separation tank 10 together with the drain water stays in sealed portions of the upper part of the oil floating separation chamber 11x and the upper part of the water tank 11y, which are the upper part of the oil / water separation tank body 11. ing. Dirty drain water immediately after being fed into the oil / water separation tank 10 by the transparent transparent tube 11a located outside the oil / water separation tank body 11 and communicating with the oil floating separation chamber 11x of the oil / water separation tank body 11 is: It is possible to visually check the state of dirt.
[0058]
Here, the drain water sent into the water storage chamber 11y stays in the upper part of the oil / water separation tank main body 11 when it accumulates above the pipe end which is one end of the discharge pipe 11c formed in the water storage chamber 11y. By the force of compressed air, it is sent to the foreign matter catching tank 20 through the discharge pipe 11c, the connecting pipe 271, the check valve 275 and the connecting pipe 272, and further through the emulsion breaking oil adsorbing tank 30 to clean water Will be discharged.
[0059]
In this case, the force of the compressed air helps the movement of the drain water until the drain water is discharged from the fresh water pipe 274 because both the foreign matter capturing tank 20 and the emulsion breaking oil adsorption tank 30 are sealed. Yes. In addition, as compressed air, the pressure of 0.01-0.7 MPa is set.
[0060]
However, although oil and various foreign substances are separated in the oil floating separation chamber 11 etc. of the oil / water separation tank 10, there is a possibility that the emulsified oil is sent into the foreign substance catching tank 20 while being dissolved in the drain water. ing.
[0061]
Therefore, in the foreign matter catching tank 20, the emulsified oil passes through the filter element 22 to separate foreign matter, and the emulsion is destroyed by releasing the water-oil combination of the emulsified oil. The separated oil is coarsened. A part of the separated oil is absorbed by the filter element 22, while a part of the separated oil and a part of the remaining emulsified oil and water are emulsified via the connection pipe 273 by the pressure of the compressed air. It is sent to the breaking oil adsorption tank 30.
[0062]
On the other hand, in the emulsion breaking oil adsorbing tank 30, the drain adsorbed with the compressed air mixed the oil adsorbing material 32 with emulsion breaking particles and the oil adsorbing material 33 adsorbing oil almost uniformly. The oil adsorbent 32 with emulsion breaking particles is randomly passed through the oil adsorbent 32 with emulsion breaking particles and the oil adsorbing material 33 in the state of being housed. Emulsion breakage is performed by releasing the water-oil bond of the emulsified oil, and the separated oil is adsorbed, and the oil adsorbent 33 adsorbs the oil that could not be adsorbed by the oil adsorbent 32 with emulsion breakage particles, The cleanliness of the drain water is improved by performing such a treatment many times at random. Further, when drain water passes through the activated carbon 34, odors and pigments are removed.
[0063]
(Second embodiment)
As shown in FIG. 2, the second embodiment is different from the first embodiment in that the connection pipe 272, the foreign matter catching tank 20 and the connection pipe 273 are connected instead of the connection pipe 276. That is, the magnet 50 is disposed on the outer periphery of the substantially central portion of 276. The operation is also omitted because the magnet 50 of the second embodiment is different from the foreign matter capturing tank 20 of the first embodiment.
[0064]
As a result, when the magnet 50 is provided on the outer periphery of the connection pipe 276 and when the magnet 50 is not provided, in the connection pipe 271 immediately after the oil / water separation tank 10 and the fresh water pipe 274 immediately after the emulsion breaking oil adsorption tank 30, The following differences were observed in the drain water stains.

[0065]
In this case, the reason for the difference between the case where the magnet 50 is provided and the case where the magnet 50 is not provided is that the drain water passes through a strong magnetic force, so that a group (cluster) of water molecules of the drain water is subdivided. By subdividing, the water molecules released their previously connected hands, and by releasing their hands, the bonds were broken and the chemical energy increased, leaving the hands free. It is thought that has brought
[0066]
(Third embodiment)
As shown in FIG. 3, the third embodiment is different from the first embodiment in that the first is that a drain is added to the collecting pipe 261 of the piping system constituted by the collecting pipe 261, the reverse branch valve 265 and the collecting pipe 262. The drain pipes 211a, 211b, 211c, 211d, 212a, 212b, 212c, 212d, 213a, 213b, 213c, 213d, 214a, 214b, 214c, 214d are all gathered, and a drain trap 222 disposed individually in the middle thereof, Instead of 232, 242 and 252, only one drain trap 266 is arranged between the collecting pipes 253 and 254, and the function is consolidated. Second, it is connected to the collecting pipe 262 to separate oil and water. Instead of the tank 10, the connecting pipe 271, the check valve 275, the connecting pipe 272, the foreign matter capturing tank 20, and the connecting pipe 273, it is connected to the collecting pipe 264 for oil content. Is that which constitutes the connecting pipe 278 and the connecting pipe 277 and the activated carbon containing recess 60 and the suction chamber 40.
[0067]
Here, by arranging only one drain trap 266 between the collecting pipes 253 and 254 and consolidating the functions thereof, it is possible to simplify the operation without considering the relationship between the plurality of drain traps 222, 232, 242 and 252. Control became possible.
[0068]
In this case, drain water is discharged from the drain trap 266 at a predetermined time in a predetermined cycle, or alternatively, at a position upstream of the drain trap 266 in a predetermined cycle. It may be possible to carry out for a predetermined time only when the presence or absence of water is confirmed and the presence of drain water is confirmed.
At that time, if the presence of the drain water is further confirmed immediately after the drain water is drained, the drain water may be discharged for a predetermined time.
[0069]
The oil separation / adsorption tank 40 has an oil separation / adsorption tank body 41 whose upper part is opened to the atmosphere, and the oil separation / adsorption tank body 41 is completely separated by walls 41f and 41g, an oil / water separation tank 41u and a first oil adsorption tank 41v. And three tanks 41u, 41v, 41w of the second oil adsorption tank 41w are formed.
[0070]
The oil / water separation tank 41u is provided with a first introduction pipe 41a, which is an introduction pipe having three ends, and one end is located near the bottom of the oil separation / adsorption tank body 41 and the other end is oil. The upper part of the separation adsorption tank main body 41 is opened to the atmosphere, and the other end is located on the water surface so that the drain water in the first introduction pipe 41a flows out to the first oil adsorption tank 41v.
[0071]
Further, the first oil adsorption tank 41v is provided with a second introduction pipe 41b which is an introduction pipe having three ends, one end being located near the bottom of the oil separation adsorption tank main body 41 and the other end. Is opened to the atmosphere at the upper part of the oil separation adsorption tank main body 41, and the other end is located on the water surface so that drain water in the second introduction pipe 41b flows out to the second oil adsorption tank 41w.
[0072]
The second oil adsorption tank 41w is provided with a third introduction pipe 41c, which is an introduction pipe having three ends, and one end is located near the bottom of the oil separation adsorption tank main body 41 and the other end. Is opened to the atmosphere at the upper part of the oil separation / adsorption tank body 41, and the other end is located on the water surface so that drain water in the third introduction pipe 41 c flows out to the connection pipe 277.
[0073]
Here, a suction pipe 41i and a discharge pipe 41h are formed at the bottom of the first oil adsorption tank 41v. And between the suction pipe 41i and the discharge pipe 41h, a fine bubble is created in the suction pipe 351a, the valve 340, the suction pipe 351b, and the oil separation / adsorption tank 40, and the foreign matter contained in the drain water is formed on the surface thereof. In order to remove the foreign matter that has adhered and floated on the water surface together with the oil, in order to send a high-concentration air solution to the oil separation / adsorption tank 40, drain water is connected from the suction pipe 351 b and the air suction pipe 315 is connected thereto. A vortex pump 310 that sucks air, performs mixing, stirring, and pressurization, a high-concentration air solution pipe 352, a separation tank 320 that separates large bubbles downstream of the vortex pump 310, and a high-concentration air solution pipe 353a The valve 350 and the high-concentration air solution pipe 353b are connected in the order described.
[0074]
In addition, in each of the upper parts of the first oil adsorption tank 41v and the second oil adsorption tank 41w, foreign substances that have floated on the surface of the water by attaching oil contained in the drain water or other foreign substances to the surface of the fine bubbles. Nets 41d and 41e are arranged so that oil adsorbents 42a and 42b intended to be adsorbed and removed together with oil and other foreign substances can be held. In this case, the nets 41d and 41e may be positioned parallel to the bottoms of the first oil adsorption tank 41v and the second oil adsorption tank 41w without being obliquely positioned.
[0075]
On the other hand, the activated carbon storage tank 60 has a support 61b, a porous plate 61a, an activated carbon 62, and a porous plate 61a from the lower part of the activated carbon storage tank main body 61 in order to form space portions 61z above and below the activated carbon storage tank main body 61. And the column 61b are configured in the order described.
[0076]
In addition, the relationship between the water surface of each tank 41u, 41v, 41w of the oil separation adsorption tank 40, the highest position of the connecting pipe 278, and the highest position of the fresh water pipe 274 is that drain water flowing into the oil separation adsorption tank 40 is It is necessary for the fresh water pipes 274 to be the same or sequentially lower so that they can be discharged naturally due to a drop.
[0077]
The method and apparatus for separating drain water generated from compressed air according to the present invention is configured as described above, and its operation will be described in detail below.
[0078]
First, when the motor constituting the air compressor 110 is operated, the rotation of the motor is transmitted to the compressor to create compressed air. Here, the produced compressed air passes through the compressed air pipe 201, the aftercooler 120, the compressed air pipe 202, the air tank 130, the compressed air pipe 203, the dryer 140, the compressed air pipe 204, the filter 150, and the compressed air pipe 205. Thus, it is possible to send dry and compressed air as needed to an actuator such as an air motor or an air cylinder at the tip.
[0079]
On the other hand, drain water generated from the compressed air by the aftercooler 120, the air tank 130, the dryer 140, and the filter 150 together with the compressed air, drain discharge pipes 211a, 212a, 213a, 214a, valves 221, 231, 241, 251 and drain discharge. The pipes 211e, 212e, 213e, 214e, the check valves 223, 233, 243, 253 and the drain discharge pipes 211d, 212d, 213d, 214d are joined to the collecting pipe 263, and further, the drain trap 266 and the collecting pipe 264 are joined. The oil separation / adsorption tank 40, the activated carbon storage tank 60, and the emulsion breaking oil adsorption tank 30 are sent to the oil / water separation apparatus 1 </ b> C to remove various foreign matters including oil and dust, and from the fresh water pipe 274 to the river It is possible to make clean fresh water that does not have any problem if it is discharged as it is. To have.
[0080]
In this case, in the oil separation / adsorption tank 40, the drain water that has flowed into the oil / water separation tank 41u floats oil, which is lighter than water, on the water surface and precipitates various foreign substances heavier than water on the bottom, resulting in relatively clean drain water. Then, it is pushed up to the water surface from the lower end portion of the first introduction pipe 41a and is fed into the first oil adsorption tank 41v from the end portion branched in parallel with the water surface.
[0081]
Next, the drain water that has flowed into the first oil adsorption tank 41v is discharged on the surface while producing fine bubbles by releasing the high-concentration air solution created by the vortex pump 310 from the discharge pipe 41h. The oil contained in the water and other foreign matters are attached to the surface of the water and float on the water surface, and are adsorbed by the oil adsorbing material 42a disposed on the water surface. Accordingly, the relatively clean drain water below the net 41d containing the oil adsorbing material 42a is pushed up from the lower end of the second introduction pipe 41b to the water surface, and the second oil from the end branched in parallel with the water surface. It is sent to the adsorption tank 41w.
[0082]
Further, the drain water that has flowed into the second oil adsorption tank 41w passes through the oil adsorbent 42b, and the relatively clean drain water below the net 41e containing the oil adsorbent 42b is transferred to the lower part of the third introduction pipe 41c. Is pushed up to the water surface from the end of the water and fed into the connecting pipe 277 from the end branched in parallel with the water surface.
[0083]
The drain water fed into the activated carbon storage tank 60 by the connecting pipe 277 can remove foreign substances such as oil, solid foreign substances, pigments and smells by the activated carbon 62.
[0084]
(Fourth embodiment)
As shown in FIG. 4, the fourth embodiment is different from the third embodiment in that the connection pipe 279 and the foreign matter catching tank 20 are connected in place of the connection pipe 277, the activated carbon storage tank 60 and the connection pipe 278. This is the configuration of the tube 273. The operation is also omitted because the foreign matter capturing tank 20 of the second embodiment is different from the activated carbon storage tank 60 of the third embodiment.
[0085]
Finally, in the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, the devices related to the drain traps 222, 232, 242, 252 and the drain trap 266 are different from each other. The equipment, the oil / water separation tank 10 and the oil separation / adsorption tank 40, the foreign matter capturing tank 20, the magnet 50 and the activated carbon storage tank 60 can be used in place of each other.
[0086]
【Effect of the invention】
As is clear from the above description, the present invention can provide the following effects.
[0087]
First, by providing a vortex pump and a separation tank, fine bubbles are created in the oil / water separation tank and oil separation / adsorption tank, and foreign water adheres to the bubbles and floats. It can be easily removed.
[0088]
Secondly, by storing the oil adsorbing material in the oil separation / adsorption tank, oil can be removed at an early stage.
[0089]
Thirdly, the arrangement of the foreign matter trapping tank, the magnet, the activated carbon storage tank, and the like facilitated the removal of the emulsified oil and the like.
[0090]
Fourthly, the emulsion-breaking oil adsorbing tank is easy to remove the emulsified oil.
[0091]
Fifth, by concentrating the drain trap in one place, the control became easy.
[Brief description of the drawings]
FIG. 1 is a diagram showing the relationship between the entire flow of compressed air and drain water and the first oil-water separator according to the present invention.
FIG. 2 is a diagram showing the relationship between the entire flow of compressed air and drain water and the second oil-water separator of the present invention.
FIG. 3 is a diagram showing the relationship between the entire flow of compressed air and drain water and the third oil-water separator of the present invention.
FIG. 4 is a diagram showing the relationship between the entire flow of compressed air and drain water and the fourth oil-water separator of the present invention.
FIG. 5 is a detailed view of an oil separation adsorption tank related to the third and fourth oil / water separation devices.
[Explanation of symbols]
1A ... Oil-water separator
1B: Oil / water separator
1C: Oil / water separator
1D ... oil-water separator
10 .... Oil water separation tank
11 .... Oil / water separation tank body
11a: Transparent tube
11b ... suction pipe
11c: Discharge pipe
11d: Bulkhead
11e: Release pipe
11f ... Suction pipe
11x: Oil flotation separation chamber
11y ... Water storage room
12 .... Pressure gauge
13 .. Floating oil take-off valve
20 .... Foreign matter catching tank
21 ···· Foreign matter catching tank body
21a: Inflow channel
21b ... Outflow channel
22 ・ ・ ・ ・ ・ ・ Filter element
23 .... Pressure gauge
24 ・ ・ ・ ・ ・ ・ Pressure gauge
30 ... Emulsion breaking oil adsorption tank
31 ... Emulsion breaking oil adsorption tank body
31c: Perforated plate
31d ... prop
31e: Intermediate perforated plate
31f: Support material
31z: Space
32 ... Oil adsorbent with emulsion breaking particles
33 ... ・ Oil adsorbent
34 ... Activated carbon
40 .... Oil separation adsorption tank
41 ... ・ Oil separation adsorption tank body
41a: First introduction pipe (introduction pipe)
41b ... Second introduction pipe (introduction pipe)
41c ... Third introduction pipe (introduction pipe)
41d net
41e ... net
41f ... wall
41g ... wall
41h ... Release tube
41i ... Suction pipe
41u ... oil-water separation tank (tank)
41v ... 1st oil adsorption tank (tank)
41w ... Second oil adsorption tank (tank)
42a: Oil adsorbent
42b ... Oil adsorbent
50 ・ ・ ・ ・ ・ ・ Magnet
60 ···· Activated carbon storage tank
61 ・ ・ ・ ・ ・ ・ Activated carbon storage tank body
61a: Perforated plate
61b ... Prop
61z: Space
62 .... Activated carbon
110 ・ ・ ・ ・ ・ Air compressor
120 ... After cooler (Drain water generating equipment)
130 ... Air tank (Drain water generating equipment)
140 ・ ・ ・ ・ ・ Dryer (device that generates drain water)
150 ... Filter (Drain water generating equipment)
201 ... compressed air piping
202... Compressed air piping
203 ... Compressed air piping
204 ...... Compressed air piping
205 ... Compressed air piping
211a ... Drain discharge pipe
211b ... Drain discharge pipe
211c ... Drain discharge pipe
211d ... Drain discharge pipe
212a ... Drain discharge pipe
212b ... Drain discharge pipe
212c ... Drain discharge pipe
212d ... Drain discharge pipe
213a ... Drain discharge pipe
213b ... Drain discharge pipe
213c ... Drain discharge pipe
213d ... Drain discharge pipe
214a ... Drain discharge pipe
214b ... Drain discharge pipe
214c ... Drain discharge pipe
214d ... Drain discharge pipe
221 ... Valve
222 ... Drain trap
223 ... Check valve
231 ... Valve
232 ... Drain trap
233 ... Check valve
241 ... Valve
242 ... Drain trap
243 ... Check valve
251 ... Valve
252 ... Drain trap
253 ... Check valve
261: Collecting pipe
262 ... Collecting pipe
263 ... Collecting pipe
264 ... Collector tube
265 ... Check valve
266 ... Drain trap
271 ... Connection pipe
272 ... Connection pipe
273 ... Connection pipe
274 ... Shimizu pipe
275 ... Check valve
276 ・ ・ ・ ・ ・ Connection pipe
277 ・ ・ ・ ・ ・ Connection pipe
278 ... Connection pipe
310 ... Eddy current pump
315 ... Air intake pipe
320 ... Separation tank
330 …… Valve
340 ... Valve
350 ... Valve
351 ... Suction piping
351a ... Suction piping
351b ··· Suction piping
352 ... High concentration air solution piping
353 ... High-concentration air solution piping
353a ・ ・ ・ ・ High concentration air solution piping
353b ... High concentration air solution piping

Claims (4)

An oil flotation separation chamber (11x) that forms a suction pipe (11b) for introducing drain water and processes separation of oil contained in the drain water due to a difference in specific gravity, the oil flotation separation chamber (11x), and a partition wall (11d) And a discharge pipe that feeds the treated drain water to the connection pipe (271), connected in a state where drain water can enter and exit between the tip of the partition wall (11d) and the bottom of the oil / water separation tank body (11). 11c) is a pressure-sealed oil / water separation tank (10) comprising a water storage chamber (11y) having a suction pipe (11f) for sucking drain water provided in the water storage chamber (11y), air An air suction pipe (315) for sucking air, a vortex pump (310) for mixing, stirring and pressurizing the air sucked by the air suction pipe (315) and the drain water sucked from the suction pipe (11f), Air bubbles Emulsion separation tank (320), and discharge pipe that emits high density pneumatic solution to the oil flotation chamber (11x) and (11e), the connected device in this order, in which process the separation of the oil In order to remove as much oil as possible, in addition to the inflow of drain water, foreign substances contained in the drain water adhere to the surface of fine bubbles that appear by releasing a high-concentration air-dissolved liquid, and thereby the water surface. An oil-water separation method of drain water generated from compressed air, characterized by removing floating foreign substances together with oil.   2. The compression according to claim 1, wherein oil or solidified foreign matter is removed again from the drain water from which foreign matter floating on the water surface is removed together with oil, and then the emulsion is broken to adsorb the oil. An oil-water separation method for drain water generated from air. Suction pipe for introducing drain water form (11b) and an oil flotation chamber for processing the separation of the oil contained in the drain water by gravity difference between (11x), the oil flotation chamber (11x) and the partition wall (11d) And a discharge pipe that feeds the treated drain water to the connection pipe (271), connected in a state where drain water can enter and exit between the tip of the partition wall (11d) and the bottom of the oil / water separation tank body (11). 11c) is a pressure-sealed oil / water separation tank (10) comprising a water storage chamber (11y) having a suction pipe (11f) for sucking drain water provided in the water storage chamber (11y), air An air suction pipe (315) for sucking air , a vortex pump (310) for mixing, stirring and pressurizing the air sucked by the air suction pipe (315) and the drain water sucked from the suction pipe (11f ) , Air bubbles A separation tank (320) to be separated and a discharge pipe (11e) for releasing a high-concentration air solution to the oil floating separation chamber (11x) are downstream of the oil / water separation tank (10) connected in this order , A foreign matter trapping tank (20) or activated carbon storage tank (60) for removing oil and solidified foreign substances and an emulsion breaking oil adsorption tank (30) for adsorbing emulsified oil are arranged in the order described. An oil-water separator for drain water generated from compressed air.   Oil separation adsorption tank (40) that separates the oil contained in drain water due to the difference in specific gravity, and the oil separation adsorption tank (40) creates fine bubbles in the oil separation adsorption tank (40) in order to remove even a little of the emulsified oil. Air and drain water are sucked in order to send a high-concentration air solution to the oil separation adsorption tank (40) for the purpose of removing foreign substances floating on the water surface together with oil. The oil is adsorbed to the vortex pump (310) that performs mixing, stirring, and pressurization, the separation tank (320) that separates large bubbles downstream of the vortex pump (310), and the oil separation adsorption tank (40). An oil adsorbing material (42a, 42b) is configured, and the oil separation / adsorption tank (40) includes an oil / water separation tank (41u) for separating oil contained in the drain water due to a difference in specific gravity, and a suction pipe for sucking the drain water. (41 ) And a discharge pipe (41h) for delivering a high-concentration air solution, a first oil adsorption tank (41v) containing the oil adsorbent (42a), and a first oil adsorber (42b) containing the oil adsorbent (42b). A two-oil adsorption tank (41w) is formed, and for the drain water outflow from the tank (41u, 41v, 41w), an introduction pipe (41a, 41b, 41c) for sending drain water from the bottom and flowing out at the position of the water surface is provided. An oil / water separator for drain water generated from compressed air, which is disposed in the tank (41u, 41v, 41w).

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