JP6266282B2 - Cleaning composition and distillation regeneration system thereof - Google Patents
Cleaning composition and distillation regeneration system thereof Download PDFInfo
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- 238000004821 distillation Methods 0.000 title claims description 54
- 230000008929 regeneration Effects 0.000 title claims description 22
- 238000011069 regeneration method Methods 0.000 title claims description 22
- 239000000203 mixture Substances 0.000 title claims description 10
- 238000004140 cleaning Methods 0.000 title description 31
- 239000002904 solvent Substances 0.000 claims description 57
- 239000012459 cleaning agent Substances 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 25
- 238000009835 boiling Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 9
- 239000012046 mixed solvent Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 4
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 39
- 238000012545 processing Methods 0.000 description 32
- 238000004506 ultrasonic cleaning Methods 0.000 description 17
- 238000012360 testing method Methods 0.000 description 11
- 238000010992 reflux Methods 0.000 description 10
- 238000013020 steam cleaning Methods 0.000 description 8
- 239000000470 constituent Substances 0.000 description 5
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical group OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- LAVARTIQQDZFNT-UHFFFAOYSA-N 1-(1-methoxypropan-2-yloxy)propan-2-yl acetate Chemical compound COCC(C)OCC(C)OC(C)=O LAVARTIQQDZFNT-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 238000000998 batch distillation Methods 0.000 description 3
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000001577 simple distillation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 1
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- WMDZKDKPYCNCDZ-UHFFFAOYSA-N 2-(2-butoxypropoxy)propan-1-ol Chemical compound CCCCOC(C)COC(C)CO WMDZKDKPYCNCDZ-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- XYVAYAJYLWYJJN-UHFFFAOYSA-N 2-(2-propoxypropoxy)propan-1-ol Chemical compound CCCOC(C)COC(C)CO XYVAYAJYLWYJJN-UHFFFAOYSA-N 0.000 description 1
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- JDSQBDGCMUXRBM-UHFFFAOYSA-N 2-[2-(2-butoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCOC(C)COC(C)COC(C)CO JDSQBDGCMUXRBM-UHFFFAOYSA-N 0.000 description 1
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ZQISRDCJNBUVMM-YFKPBYRVSA-N L-histidinol Chemical compound OC[C@@H](N)CC1=CNC=N1 ZQISRDCJNBUVMM-YFKPBYRVSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical compound O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- RFHAOTPXVQNOHP-UHFFFAOYSA-N fluconazole Chemical compound C1=NC=NN1CC(C=1C(=CC(F)=CC=1)F)(O)CN1C=NC=N1 RFHAOTPXVQNOHP-UHFFFAOYSA-N 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229940116423 propylene glycol diacetate Drugs 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Detergent Compositions (AREA)
Description
本発明は、油性加工油と水溶性加工油の何れに対しても優れた洗浄性能を発揮する洗浄剤組成物、及びその蒸留再生システムに関する。 The present invention relates to a cleaning composition that exhibits excellent cleaning performance for both oil-based processing oil and water-soluble processing oil, and a distillation regeneration system thereof.
洗浄剤は、炭化水素系やアルコール系など、一般に引火性を有する非水系洗浄剤と、非引火性の水系洗浄剤と、前二者の中間に位置する準水系洗浄剤と、に区分される。そして、準水系洗浄剤は、上記の関係から、可燃物型と非可燃物型とに分類することができる。 Cleaning agents are generally classified into non-flammable non-aqueous cleaning agents such as hydrocarbons and alcohols, non-flammable water-based cleaning agents, and semi-aqueous cleaning agents located between the former two. . And a semi-water type | system | group cleaning agent can be classified into a combustible material type and a non-combustible material type from said relationship.
ここで、非可燃物型の準水系洗浄剤は、水を配合することで非引火性にしたタイプであり、一方、可燃物型の準水系洗浄剤は、グリコールエーテル系、アルコール系、ピロリドン系などの溶剤を主体成分として引火性を有している。なお、グリコールエーテル系の溶剤は、一分子中に水酸基とエーテル基とを有することで、汚れへの浸透力に優れている。 Here, the non-flammable type semi-aqueous cleaning agent is a type made non-flammable by blending water, while the combustible type semi-aqueous cleaning agent is glycol ether type, alcohol type, pyrrolidone type It is flammable with a solvent such as the main component. Note that the glycol ether solvent has a hydroxyl group and an ether group in one molecule, and thus has excellent penetrating ability to dirt.
ところで、最近では、水溶性加工油を用いた金属加工が増加しているところ、油性加工油だけでなく、水溶性加工油にも対応可能な洗浄剤が望まれている。 By the way, recently, metal processing using a water-soluble processing oil is increasing, and therefore a cleaning agent that can handle not only oil-based processing oil but also water-soluble processing oil is desired.
しかし、水溶性加工油で加工された加工品を、非水系の炭化水素系溶剤で洗浄した場合には、洗浄後にシミ（水溶性加工油の固形分残渣）が発生し、特に、乾燥状態の水溶性加工油が付着した加工品に対しては、如何に洗浄力に優れた非水系の溶剤を使用しても、シミの発生が避けられないという問題がある。 However, when a processed product processed with a water-soluble processing oil is washed with a non-aqueous hydrocarbon solvent, a stain (a solid residue of the water-soluble processing oil) is generated after the cleaning. For processed products to which water-soluble processing oil is attached, there is a problem that the occurrence of spots is unavoidable no matter how a non-aqueous solvent having excellent detergency is used.
また、非引火性など作業面での安全性と、洗浄性に優れ、且つ、再生可能な準水系洗浄剤も強く望まれるところである。 In addition, there is a strong demand for a semi-aqueous cleaning agent that is excellent in work safety such as non-flammability and cleanability and that can be regenerated.
ここで、グリコールエーテル系の溶剤であって、非引火性のものも提案されているが（特許文献１〜特許文献５）、何れも、界面活性剤やフッ素系化合物を必須成分とするので、溶剤の再生が不可能であり、また、作業面での安全性にも問題がある。 Here, glycol ether solvents, non-flammable ones have also been proposed (Patent Document 1 to Patent Document 5), both of which include surfactants and fluorine compounds as essential components. It is impossible to regenerate the solvent, and there is a problem in safety in terms of work.
本発明は、上記の問題に鑑みてなされたものであって、油性加工油と水溶性加工油の何れに対しても優れた洗浄性能を発揮する洗浄剤組成物を効果的に再生する蒸留再生システムを提供することを目的とする。 The present invention has been made in view of the above problems, and is a distillation regeneration that effectively regenerates a cleaning composition that exhibits excellent cleaning performance for both oily processing oil and water-soluble processing oil. The purpose is to provide a system.
上記の目的を達成するため、本発明は、化学式Ｒ１Ｏ［Ｃ３Ｈ６Ｏ］ｎＣＯＣＨ３及び／又は、化学式Ｒ２Ｏ［Ｃ３Ｈ６Ｏ］ｍＨから選ばれる一種またはそれ以上の親油性溶剤（Ｃ３Ｈ６は、ＣＨ２ＣＨ（ＣＨ３）又はＣＨ２ＣＨ２ＣＨ２、Ｒ１は炭素数１〜２のアルキル基又はアセチル基、Ｒ２は炭素数３〜６のアルキル基、ｎ及びｍは１〜３）と、化学式Ｒ３Ｏ［ＣＨ２ＣＨ２Ｏ］ｋＨの一種またはそれ以上の親水性溶剤（Ｒ３は炭素数１〜４のアルキル基、ｋは１〜３）と、を含有し、水の含有率が１５Ｖｏｌ％以上である洗浄剤を蒸留再生する蒸留再生システムであって、前記親油性溶剤と前記親水性溶剤は、常圧下での沸点差が５０℃以下であり、使用後の洗浄剤を受けるリボイラーと、リボイラーからの蒸気を受ける蒸留塔と、蒸留塔からの蒸気を受けるコンデンサと、コンデンサの出力を受ける貯留槽と、を有して構成され、常圧下で動作させるコンデンサの出力を、コンデンサの蒸気温度に基づいて、水を貯留すべき第１貯留槽か、混合溶剤を貯留すべき第２貯留槽かに供給する構成を採るか、或いは、減圧下で動作させるコンデンサの出力を、単一の貯留槽に供給して、単一の貯留槽に回収された回収液の比重に基づいて、必要量の水を補充する構成を採ることを特徴とする。なお、〜で示す数値範囲は、両端の数値を含んでいる。 To achieve the above object, the present invention provides one or more compounds selected from the chemical formula R 1 O [C 3 H 6 O] n COCH 3 and / or the chemical formula R 2 O [C 3 H 6 O] m H. A lipophilic solvent (C 3 H 6 is CH 2 CH (CH 3 ) or CH 2 CH 2 CH 2 , R 1 is an alkyl group or acetyl group having 1 to 2 carbon atoms, and R 2 is an alkyl group having 3 to 6 carbon atoms. An alkyl group, n and m are 1 to 3) and one or more hydrophilic solvents of the formula R 3 O [CH 2 CH 2 O] k H (R 3 is an alkyl group having 1 to 4 carbon atoms, k is 1) to 3), and a distillation regeneration system that distills and regenerates a detergent having a water content of 15 Vol% or more, wherein the lipophilic solvent and the hydrophilic solvent are different in boiling point under normal pressure. A reboiler that receives a cleaning agent after use, and a reboiler that is less than 50 ° C. A distillation column for receiving the al steam, and a capacitor for receiving the vapor from the distillation column, is configured to have a, a reservoir for receiving the output of the capacitor, the output capacitor is operated under normal pressure, the steam temperature of the capacitor On the basis of this, a configuration in which water is stored in the first storage tank or the mixed solvent is stored in the second storage tank or the output of the capacitor operated under reduced pressure is supplied to a single storage tank. It is characterized by adopting a configuration in which a necessary amount of water is replenished based on the specific gravity of the recovered liquid supplied to the single storage tank. In addition, the numerical range shown by-includes the numerical value of both ends.
本発明の洗浄剤は、撹拌や超音波振動などを付加することなく、静止浴状態でも所定の洗浄性能を発揮することができる。しかも、上記の親油性溶剤と親水性溶剤とを組み合わせることで、油性加工油と水溶性加工油の何れの洗浄にも適用することができ、洗浄後の加工品にシミが発生することがない。 The cleaning agent of the present invention can exhibit a predetermined cleaning performance even in a stationary bath state without adding stirring or ultrasonic vibration. Moreover, by combining the above lipophilic solvent and hydrophilic solvent, it can be applied to any cleaning of oil-based processing oil and water-soluble processing oil, and no stain is generated on the processed product after cleaning. .
本発明の親油性溶剤と親水性溶剤とは、沸点範囲が同じであるので、混合液の状態で蒸留再生することできる。なお、沸点差は、好ましくは、２０℃以下、より好ましくは、１０℃以下とすべきである。 Since the lipophilic solvent and the hydrophilic solvent of the present invention have the same boiling range, they can be regenerated by distillation in the state of a mixed solution. The difference in boiling point should preferably be 20 ° C. or lower, more preferably 10 ° C. or lower.
本発明の洗浄剤は、水の含有量が１５Ｖｏｌ％以上であり、非引火性を実現することができる。ここで、引火性は、ＪＩＳＫ２２６５−４に基づいて特定される引火点によって評価され、非引火性とは、引火点が測定できない場合を意味する。 The cleaning agent of the present invention has a water content of 15 Vol% or more, and can realize nonflammability. Here, the flammability is evaluated by the flash point specified based on JISK2265-4, and the non-flammability means a case where the flash point cannot be measured.
本発明の親油性溶剤は、化学式Ｒ１Ｏ［Ｃ３Ｈ６Ｏ］ｎＣＯＣＨ３及び／又は、化学式Ｒ２Ｏ［Ｃ３Ｈ６Ｏ］ｍＨから選ばれる一種またはそれ以上の混合物であり、Ｃ３Ｈ６は、ＣＨ２ＣＨ（ＣＨ３）又はＣＨ２ＣＨ２ＣＨ２、Ｒ１は炭素数１〜２のアルキル基又はアセチル基、Ｒ２は炭素数３〜６のアルキル基、ｎ及びｍは１〜３である。 The lipophilic solvent of the present invention is one or a mixture selected from the chemical formula R 1 O [C 3 H 6 O] n COCH 3 and / or the chemical formula R 2 O [C 3 H 6 O] m H. , C 3 H 6 is CH 2 CH (CH 3 ) or CH 2 CH 2 CH 2 , R 1 is an alkyl group or acetyl group having 1 to 2 carbon atoms, R 2 is an alkyl group having 3 to 6 carbon atoms, n And m is 1-3.
そして、好ましくは、ジプロピレングリコールｎ−プロピルエーテル、プロピレングリコールｎ−ブチルエーテル、ジプロピレングリコールｎ−ブチルエーテル、トリプロピレングリコールｎ−ブチルエーテル、プロピレングリコールメチルエーテルアセテート、ジプロピレングリコールメチルエーテルアセテート、プロピレングリコールジアセテート、プロピレングリコールフェニルエーテルなどを例示することができる。なお、蒸留再生の観点からは、上記の何れか一種が選択され、好ましくは、ジプロピレングリコールメチルエーテルアセテートが選択される。 Preferably, dipropylene glycol n-propyl ether, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, propylene glycol methyl ether acetate, dipropylene glycol methyl ether acetate, propylene glycol diacetate And propylene glycol phenyl ether. From the viewpoint of distillation regeneration, any one of the above is selected, and dipropylene glycol methyl ether acetate is preferably selected.
また、本発明の親水性溶剤は、化学式Ｒ３Ｏ［ＣＨ２ＣＨ２Ｏ］ｋＨの一種又はそれ以上の混合物であり、Ｒ３は炭素数１〜４のアルキル基、ｋは１〜３である。そして、好ましくは、ジエチレングリコールメチルエーテル、トリエチレングリコールメチルエーテル、ジエチレングリコールエチルエーテル、トリエチレングリコールエチルエーテル、エチレングリコールｎ−プロピルエーテル、エチレングリコールｎ−ブチルエーテル、ジエチレングリコールｎ−ブチルエーテル、トリエチレングリコールｎ−ブチルエーテルなどを例示することができる。そして、蒸留再生の観点からは、上記の何れか一種が選択される。 The hydrophilic solvent of the present invention is one or a mixture of chemical formulas R 3 O [CH 2 CH 2 O] k H, R 3 is an alkyl group having 1 to 4 carbon atoms, and k is 1 to 3 It is. And preferably, diethylene glycol methyl ether, triethylene glycol methyl ether, diethylene glycol ethyl ether, triethylene glycol ethyl ether, ethylene glycol n-propyl ether, ethylene glycol n-butyl ether, diethylene glycol n-butyl ether, triethylene glycol n-butyl ether, etc. Can be illustrated. From the viewpoint of distillation regeneration, any one of the above is selected.
また、親油性溶剤として、ジプロピレングリコールメチルエーテルアセテートが選択される場合には、これに沸点の近いジエチレングリコールエチルエーテルが好適に選択される。 When dipropylene glycol methyl ether acetate is selected as the lipophilic solvent, diethylene glycol ethyl ether having a boiling point close to this is preferably selected.
親油性溶剤と、親水性溶剤の含有Ｖｏｌ比は、５：１〜１：５程度（より好ましくは、２：１〜１：２程度）に設定するのが好ましい。また、親油性溶剤と親水性溶剤の引火点が、各々、７０℃以上であると、非引火性の洗浄剤Ｗを実現する上で好適である。 The content Vol ratio of the lipophilic solvent and the hydrophilic solvent is preferably set to about 5: 1 to 1: 5 (more preferably about 2: 1 to 1: 2). Further, when the flash points of the oleophilic solvent and the hydrophilic solvent are each 70 ° C. or higher, it is suitable for realizing the non-flammable cleaning agent W.
本発明の洗浄剤は、使用後、親油性溶剤と親水性溶剤とが混合状態で蒸留再生され、これに、必要量の水が添加されることで洗浄剤として再使用されるのが好適である。 The cleaning agent of the present invention is preferably reused as a cleaning agent after use by distilling and regenerating a lipophilic solvent and a hydrophilic solvent in a mixed state, and adding a necessary amount of water thereto. is there.
このような場合、溶剤の沸点が低い方が有利であるが、常圧下での沸点が１８０℃〜２３０℃の溶剤の場合には、減圧下で蒸留再生するのが好適である。 In such a case, it is advantageous that the solvent has a low boiling point. However, in the case of a solvent having a boiling point of 180 ° C. to 230 ° C. under normal pressure, it is preferable to perform distillation regeneration under reduced pressure.
本発明に係る蒸留再生システムは、油性加工油と水溶性加工油の何れに対しても優れた洗浄性能を発揮する上に、シミの発生がない洗浄剤組成物を高効率に再生することができる。 The distillation regeneration system according to the present invention exhibits excellent cleaning performance for both oil-based processing oil and water-soluble processing oil, and can efficiently regenerate a cleaning composition free from spots. it can.
以下、実施例を説明するが、具体的な記載内容は、何ら、本発明を限定するものではない。 Hereinafter, although an Example is described, the concrete description content does not limit this invention at all.
＜可溶性試験＞
化学式Ｒ１Ｏ［Ｃ３Ｈ６Ｏ］ｎＣＯＣＨ３又は、化学式Ｒ２Ｏ［Ｃ３Ｈ６Ｏ］ｍＨの親油性溶剤と、化学式Ｒ３Ｏ［ＣＨ２ＣＨ２Ｏ］ｋＨの親水性溶剤について、沸点の近いものを適宜組み合わせ、溶剤の混合比と共に、水の含有率（０〜９０Ｖｏｌ％）を変えて可溶性を確認した。なお、混合液について、５００ｒｐｍで１０分撹拌した後に、その混合液の状態を目視確認した。
<Solubility test>
A lipophilic solvent of the chemical formula R 1 O [C 3 H 6 O] n COCH 3 or the chemical formula R 2 O [C 3 H 6 O] m H and a hydrophilic property of the chemical formula R 3 O [CH 2 CH 2 O] k H About the property solvent, the thing with a near boiling point was combined suitably, and the content rate of water (0-90 Vol%) was changed with the mixing ratio of the solvent, and solubility was confirmed. In addition, about the liquid mixture, after stirring for 10 minutes at 500 rpm, the state of the liquid mixture was confirmed visually.
その結果、親油性溶剤と親水性溶剤の混合Ｖｏｌ比に拘わらず、また、水の含有率に拘わらず、混合液が透明かつ相分離がないことを確認した。 As a result, it was confirmed that the mixed solution was transparent and phase-separated irrespective of the mixing Vol ratio of the lipophilic solvent and the hydrophilic solvent and regardless of the water content.
＜非引火性試験＞
そこで、代表値として、親油性溶剤と親水性溶剤の混合比を５０ｖｏｌ％とし、この混合液に、水を加えた準水系洗浄剤について引火点の計測試験を実施した。
<Non-flammability test>
Therefore, as a representative value, the mixing ratio of the lipophilic solvent and the hydrophilic solvent was set to 50 vol%, and a flash point measurement test was performed on the semi-aqueous cleaning agent in which water was added to this mixed solution.
具体的には、準水系洗浄剤全体に対する水の含有率ｖｏｌ％（５、１０、１５、２０、３０、４０）を変えた６種類の洗浄液について、試験方法ＪＩＳＫ２２６５−４に基づいて引火点を計測した。 Specifically, with respect to six types of cleaning liquids with different water content vol% (5, 10, 15, 20, 30, 40) with respect to the whole semi-aqueous cleaning agent, the flash point is determined based on the test method JISK2265-4. Measured.
その結果、水の含有率が５ｖｏｌ％や１０ｖｏｌ％の洗浄液には、引火点が検出されたが、その他の洗浄液には引火点が検出されなかった。 As a result, the flash point was detected in the cleaning liquid having a water content of 5 vol% or 10 vol%, but no flash point was detected in the other cleaning liquids.
ここで、この非引火性試験に供した親油性溶剤と親水性溶剤の引火点は、９０〜１００℃程度であるので、水の含有率ｖｏｌ％が１５％以上であれば、同程度の物性を有する溶剤にも非引火性が実現されるものと期待され、また、他の溶剤を使用する場合には、引火点その他の物性を考慮して水の含有比を変えれば良いと考えられる。 Here, since the flash point of the oleophilic solvent and the hydrophilic solvent subjected to the non-flammability test is about 90 to 100 ° C., if the water content vol% is 15% or more, the same physical properties are obtained. It is expected that non-flammability is also realized in a solvent having a water content, and when other solvents are used, it is considered that the water content ratio may be changed in consideration of the flash point and other physical properties.
そこで、これらの諸点を考慮して、構成溶剤に拘わらず非引火性を実現するには、少なくとも、水の含有率は、１０ｖｏｌ％以上、好ましくは１５ｖｏｌ％以上であるべきであると結論した。 In view of these points, it was concluded that the water content should be at least 10 vol%, preferably at least 15 vol%, in order to achieve non-flammability regardless of the constituent solvent.
＜洗浄性能試験＞
次に、洗浄性能試験について説明する。この試験でも、代表値として、親油性溶剤と親水性溶剤の混合比を５０ｖｏｌ％とし、水を含まない引火性の洗浄剤ＮＷを第１群の実施例とした。
<Cleaning performance test>
Next, the cleaning performance test will be described. Also in this test, as a representative value, the mixing ratio of the lipophilic solvent and the hydrophilic solvent was set to 50 vol%, and the flammable cleaning agent NW containing no water was used as an example of the first group.
また、この引火性の洗浄剤ＮＷに、含有率３０ｖｏｌ％の水を加えた非引火性の洗浄剤Ｗを、第２群の実施例とした。そして、第１群と第２群の実施例について、油性加工油と水溶性加工油に対する洗浄性能を実験した。 A non-flammable cleaning agent W obtained by adding water having a content of 30 vol% to the flammable cleaning agent NW was used as an example of the second group. And about the Example of the 1st group and the 2nd group, the cleaning performance with respect to oil-based processing oil and water-soluble processing oil was experimented.
なお、引火性の洗浄剤ＮＷとして、多種類の混合液を用意したが、非引火性の洗浄剤Ｗを実現するには、構成溶剤の引火点が高い方が有利であること、また、蒸留再生を実現するため構成溶剤の沸点が共通することが前提となるので、構成溶剤の引火点が各々７０℃以上であること、及び、構成溶剤の常圧下での沸点差が５０℃以下であることを条件に選択した。 In addition, although many kinds of mixed liquids were prepared as the flammable cleaning agent NW, in order to realize the non-flammable cleaning agent W, it is advantageous that the flash point of the constituent solvent is higher, and the distillation. Since it is premised that the boiling points of the constituent solvents are common in order to realize regeneration, the flash points of the constituent solvents are each 70 ° C. or higher, and the boiling point difference of the constituent solvents under normal pressure is 50 ° C. or lower. Was selected on the condition.
具体的には、洗浄試験に供した第１群の洗浄剤ＮＷには、例えば、ジプロピレングリコールメチルエーテルアセテートと、ジエチレングリコールエチルエーテルの混合液を含んでいる。 Specifically, the first group of cleaning agents NW subjected to the cleaning test includes, for example, a mixed liquid of dipropylene glycol methyl ether acetate and diethylene glycol ethyl ether.
油性加工油としては、バサラＲ−２２４０（Ｒ−ＧＯＴ株式会社）と、アクアプレスＬ−１０７Ａ（アクア化学）を使用した。また、水溶性加工油としては、ハイソルＸ（ビーピー・ジャパン）を使用した。 As the oily processing oil, Basara R-2240 (R-GOT Co., Ltd.) and Aqua Press L-107A (Aqua Chemical) were used. Moreover, as a water-soluble processing oil, Hisol X (Beep Japan) was used.
これらの加工油に、四塩化炭素で清浄化したテストピース（ＳＵＳ）を各々３０分間浸漬し、液切りをした後、水溶性加工油については、更に、６０℃環境で３０分間乾燥させた。 Each test oil (SUS) cleaned with carbon tetrachloride was immersed in these processing oils for 30 minutes, drained, and the water-soluble processing oil was further dried in an environment of 60 ° C. for 30 minutes.
このようにして加工油を付着させた３種類多数のテストピースについて、第１次超音波洗浄（５分）⇒第２次超音波洗浄（減復圧５回、５分）⇒蒸気洗浄（２分）⇒真空乾燥（１６０秒）を実行した。 Three kinds of test pieces to which processing oil is attached in this way, primary ultrasonic cleaning (5 minutes) ⇒ secondary ultrasonic cleaning (reduction pressure 5 times, 5 minutes) ⇒ steam cleaning (2 Min) => vacuum drying (160 seconds) was performed.
なお、比較例として、市販のグリコールエーテル系の溶剤（ＡＱ＃２００：アクア化学）についても同様の洗浄性能を比較した。 As a comparative example, the same cleaning performance was compared for a commercially available glycol ether solvent (AQ # 200: Aqua Chemical).
その結果、油性加工油を付着させたテストピースは、第１群実施例、第２群実施例、比較例とも、シミの無い同レベルの洗浄性能が確認された。すなわち、実施例及び比較例の洗浄剤は、非水系の炭化水素溶剤と遜色のない洗浄性能を発揮することが確認された。 As a result, it was confirmed that the test piece to which the oil-based processing oil was attached had the same level of cleaning performance without any spots in the first group example, the second group example, and the comparative example. That is, it was confirmed that the cleaning agents of Examples and Comparative Examples exhibited cleaning performance comparable to that of non-aqueous hydrocarbon solvents.
一方、水溶性加工油を付着させたテストピースについては、これを、比較例の洗浄剤で洗浄すると目視可能なシミが確認された。これに対して、第１群と第２群の実施例の洗浄剤で洗浄した場合には、何れの洗浄剤でも、テストピースが確実に洗浄され、しかもシミの発生も認めらなかった。 On the other hand, about the test piece to which water-soluble processing oil was made to adhere, when this was wash | cleaned with the cleaning agent of a comparative example, the visible stain was confirmed. On the other hand, when the cleaning was performed with the cleaning agents of the first group and the second group, the test piece was reliably cleaned with any cleaning agent, and no spots were observed.
＜蒸留再生システム１＞
実施例の洗浄剤は、蒸留システムＳＹＳにおいて、バッチ処理的に蒸留再生されて再使用される。図１は、バッチ蒸留システムＳＹＳを含んだ洗浄システムの一例を図示したものであり、水を含有する非引火性の洗浄剤Ｗ（第２群の実施例）を使用する第一と第二の超音波洗浄槽１，２と、準水系の洗浄剤を使用する蒸気洗浄槽３と、が示されている。
<Distillation regeneration system 1>
In the distillation system SYS, the cleaning agent of the embodiment is distilled and reused in a batch process. FIG. 1 illustrates an example of a cleaning system that includes a batch distillation system SYS, first and second using a non-flammable cleaning agent W containing water (second group of embodiments). Ultrasonic cleaning tanks 1 and 2 and a steam cleaning tank 3 using a semi-aqueous cleaning agent are shown.
油性加工油又は水溶性加工油の付着した金属加工品は、第一超音波洗浄槽１⇒第二超音波洗浄槽２⇒蒸気洗浄槽３の順番に移送され、蒸気洗浄槽３おいて、仕上げリンス処理と真空乾燥処理とが完了する。この場合、第一と第二の超音波洗浄槽１，２において、実施例の洗浄剤を使用するので、水溶性加工油の付着した金属加工品であっても、洗浄処理を終えた金属加工品にシミが生じることはない。 The metal processed product to which oil-based processing oil or water-soluble processing oil is attached is transferred in the order of first ultrasonic cleaning tank 1 ⇒ second ultrasonic cleaning tank 2 ⇒ steam cleaning tank 3 and finished in the steam cleaning tank 3. The rinsing process and the vacuum drying process are completed. In this case, since the cleaning agent of the embodiment is used in the first and second ultrasonic cleaning tanks 1 and 2, the metal processing after the cleaning processing is completed even if the metal processing product is attached with water-soluble processing oil. There is no spot on the product.
なお、蒸気洗浄槽３で使用する準水系の洗浄剤は、好適には、グリコールエーテル系の親油性溶剤と親水性溶剤で構成される。これらの溶剤は、その沸点が一致するので、蒸留再生槽６で蒸留再生されて、蒸気洗浄槽３において再利用される。なお、蒸気洗浄槽３や蒸留再生槽は、真空ポンプによって適宜に減圧される。更に、水を含有する非引火性の洗浄剤Ｗで蒸気洗浄することも可能である。 The semi-aqueous cleaning agent used in the steam cleaning tank 3 is preferably composed of a glycol ether-based lipophilic solvent and a hydrophilic solvent. Since these solvents have the same boiling point, they are distilled and regenerated in the distillation regeneration tank 6 and reused in the steam cleaning tank 3. The steam cleaning tank 3 and the distillation regeneration tank are appropriately depressurized by a vacuum pump. Further, it is possible to perform steam cleaning with a non-flammable cleaning agent W containing water.
また、蒸留システムＳＹＳについても、不図示の真空ポンプによって適宜に減圧されて運転される。 Further, the distillation system SYS is also operated while being appropriately decompressed by a vacuum pump (not shown).
図示の通り、実施例の洗浄剤Ｗは、第二超音波洗浄槽２⇒リザーブタンク５⇒循環ポンプＰ⇒異物除去フィルターＦ⇒第二超音波洗浄槽２の経路で循環すると共に、第一超音波洗浄槽１⇒リザーブタンク４⇒循環ポンプＰ⇒異物除去フィルターＦ⇒第一超音波洗浄槽１の経路でも循環している。 As shown in the figure, the cleaning agent W of the embodiment circulates in the path of the second ultrasonic cleaning tank 2 ⇒ the reserve tank 5 ⇒ the circulation pump P ⇒ foreign matter removal filter F ⇒ the second ultrasonic cleaning tank 2 and It also circulates in the path of the ultrasonic cleaning tank 1 ⇒ the reserve tank 4 ⇒ the circulation pump P ⇒ the foreign matter removal filter F ⇒ the first ultrasonic cleaning tank 1.
そして、使用後の洗浄剤Ｗは、バッチ処理的にリザーブタンクから蒸留システムＳＹＳに供給され、減圧下で、混合溶剤と水とに分留される。そして、汚れ分の濃縮液が全量廃棄される一方、再生された混合溶剤と水は、第二超音波洗浄槽２（又はそのリザーブタンク５）に供給され、第二超音波洗浄槽２でオーバフローした洗浄剤は、第一超音波洗浄槽に導入される。 And the used cleaning agent W is supplied to the distillation system SYS from a reserve tank by batch processing, and is fractionated into a mixed solvent and water under pressure reduction. The whole amount of the concentrated concentrate is discarded, and the regenerated mixed solvent and water are supplied to the second ultrasonic cleaning tank 2 (or its reserve tank 5) and overflow in the second ultrasonic cleaning tank 2. The cleaning agent thus introduced is introduced into the first ultrasonic cleaning tank.
そのため、第二超音波洗浄槽１や、第一超音波洗浄槽１の洗浄剤Ｗの汚染度を、常に所定レベル以下に維持することができる。なお、再生された混合溶剤や水を、第一超音波洗浄槽１（又はそのリザーブタンク４）に供給しても良いのは勿論である。 Therefore, the contamination degree of the cleaning agent W in the second ultrasonic cleaning tank 1 or the first ultrasonic cleaning tank 1 can always be kept below a predetermined level. Needless to say, the regenerated mixed solvent or water may be supplied to the first ultrasonic cleaning tank 1 (or its reserve tank 4).
図２は、多重効用型バッチ蒸留システムＳＹＳをより詳細に示す図面である。図示の通り、この蒸留システムＳＹＳは、リザーブタンク４から使用後の洗浄剤Ｗを受けるリボイラー１０と、リボイラー１０からの蒸気を受ける蒸留塔１１と、２０℃程度に維持されたコンデンサ１７を経由した蒸留塔１１からの留出液を受け、これを蒸留塔１１に還流可能に構成された還流槽１２と、蒸留塔１１からの缶出液を受け、これをリボイラー１０に還流可能に構成された中間槽１３と、を中心に構成されている。そして、蒸留塔１１は、定常的には、全還流運転される。 FIG. 2 is a diagram showing the multi-effect batch distillation system SYS in more detail. As illustrated, the distillation system SYS passes through a reboiler 10 that receives the used cleaning agent W from the reserve tank 4, a distillation column 11 that receives steam from the reboiler 10, and a condenser 17 that is maintained at about 20 ° C. A distillate from the distillation column 11 was received, and a reflux tank 12 configured to be able to be refluxed to the distillation column 11 and a bottoms from the distillation column 11 were received and configured to be refluxed to the reboiler 10. The middle tank 13 is mainly configured. Then, the distillation column 11 is regularly operated at total reflux.
この蒸留システムＳＹＳは、沸点１００℃の水と、沸点２００℃程度の混合溶剤の２成分系であり、リボイラー１０と蒸留塔１１とで２段の蒸留塔に設計されている。また、還流槽１２に、真空ポンプ１６を接続することで、１００℃〜１５０℃、０．１ａｔｍに設計された蒸留塔を構成している。 This distillation system SYS is a two-component system of water having a boiling point of 100 ° C. and a mixed solvent having a boiling point of about 200 ° C. The reboiler 10 and the distillation column 11 are designed as a two-stage distillation column. Further, a distillation column designed at 100 to 150 ° C. and 0.1 atm is configured by connecting the vacuum pump 16 to the reflux tank 12.
リボイラー１０への導入液Ｗ（洗浄劣化液）は、加熱状態のオイルタンク１４に収容された熱媒体オイルによって加熱され、リボイラー１０の濃縮液は、排出可能に構成されている。なお、オイルタンク１４には、オイル膨張タンクＴＮ１が接続されて、熱膨張した熱媒体オイルを受け止めている。 The introduction liquid W (cleaning deterioration liquid) to the reboiler 10 is heated by the heat medium oil stored in the heated oil tank 14, and the concentrated liquid of the reboiler 10 is configured to be discharged. An oil expansion tank TN1 is connected to the oil tank 14 to receive the heat medium oil that has been thermally expanded.
所定時間の全還流運転によって、還流槽１２に回収された水と、中間槽１３に回収された混合溶剤は、室温レベルまで冷却された後、例えば、リザーブタンク４（又はリザーブタンク５）に回収される。なお、このとき、洗浄剤Ｗには、補充タンクＴＮ２から、必要量の水が補充されるので非引火性を維持することができる。 The water collected in the reflux tank 12 and the mixed solvent collected in the intermediate tank 13 by the total reflux operation for a predetermined time are cooled to the room temperature level and then collected in the reserve tank 4 (or the reserve tank 5), for example. Is done. At this time, the cleaning agent W is replenished with a necessary amount of water from the replenishing tank TN2, so that non-flammability can be maintained.
ここで、蒸留システムＳＹＳの一連の動作を確認すると以下の通りである。先ず、リザーブタンク４との接続を閉じた状態で、系全体を０．１ａｔｍ程度に真空引きした上でリザーブタンク４との接続を開き、リザーブタンク４からリボイラー１０に、使用後の洗浄液Ｗ（劣化液）を導入する。 Here, it is as follows when a series of operation | movement of the distillation system SYS is confirmed. First, in a state where the connection with the reserve tank 4 is closed, the entire system is evacuated to about 0.1 atm and then the connection with the reserve tank 4 is opened. From the reserve tank 4 to the reboiler 10, the used cleaning liquid W ( Degraded liquid) is introduced.
次に、リボイラー１０の加熱動作を開始し、還流槽１２や中間槽１３が所定のホールドアップ状態で全還流運転を開始する。その後、所定の運転時間が完了すればリボイラー１０の加熱動作を停止する。 Next, the heating operation of the reboiler 10 is started, and the total reflux operation is started while the reflux tank 12 and the intermediate tank 13 are in a predetermined hold-up state. Thereafter, when the predetermined operation time is completed, the heating operation of the reboiler 10 is stopped.
次に、リザーブタンク４との接続を閉じ、還流槽１２と中間槽１３を室温レベルまで冷却する。その後、系全体を大気開放した上で、還流槽１２と中間槽１３に回収された再生液を、補充タンクＴＮ２からの補充液と共にリザーブタンク４に移動させる。また、リボイラー１０の濃縮液を廃棄してバッチ処理を終える。 Next, the connection with the reserve tank 4 is closed, and the reflux tank 12 and the intermediate tank 13 are cooled to the room temperature level. Thereafter, the entire system is opened to the atmosphere, and the regenerated liquid collected in the reflux tank 12 and the intermediate tank 13 is moved to the reserve tank 4 together with the replenisher from the replenisher tank TN2. Further, the concentrated liquid of the reboiler 10 is discarded and the batch processing is finished.
なお、図２では、蒸留システムＳＹＳを超音波洗浄槽に配置したが、他の浸漬洗浄槽あるいはスプレー洗浄槽を含め、配置対象が特に限定されないことは言うまでもない。また、蒸留システムＳＹＳは、これをより簡易的に構成することもできる。 In FIG. 2, the distillation system SYS is disposed in the ultrasonic cleaning tank, but it goes without saying that the object to be disposed is not particularly limited, including other immersion cleaning tanks or spray cleaning tanks. In addition, the distillation system SYS can be configured more simply.
＜蒸留再生システム２＞
図３は、バッチ式単蒸留方式を採った蒸留システムＳＹＳを示しており、図２と同一の構成要素には同一の符号を付している。図示の通り、この蒸留システムでは、減圧ラインを省略して、常圧下で、混合液と水を蒸留再生している。
<Distillation regeneration system 2>
FIG. 3 shows a distillation system SYS adopting a batch type simple distillation system, and the same components as those in FIG. 2 are denoted by the same reference numerals. As shown in the figure, in this distillation system, the decompression line is omitted, and the mixed solution and water are distilled and regenerated under normal pressure.
そして、コンデンサ１７の出力側には、水貯留槽ＴＮ３と溶剤貯留槽ＴＮ４とが並列的に配置され、接続関係が時間的に切替されることで、何れか一方だけがコンデンサ１７に接続されるよう構成されている。この接続関係は、例えば、コンデンサ入力側の蒸気温度で管理され、蒸気温度が１００℃を維持するタイミングでは、コンデンサ１７の出力が水貯留槽ＴＮ３に導入され、その後、蒸気温度が１００℃を超えた後は、コンデンサ１７の出力が溶剤貯留槽ＴＮ４に導入される。 Then, on the output side of the capacitor 17, the water storage tank TN 3 and the solvent storage tank TN 4 are arranged in parallel, and the connection relation is temporally switched, so that only one of them is connected to the capacitor 17. It is configured as follows. This connection relationship is managed by, for example, the steam temperature on the condenser input side, and at the timing when the steam temperature is maintained at 100 ° C., the output of the capacitor 17 is introduced into the water storage tank TN3, and then the steam temperature exceeds 100 ° C. After that, the output of the capacitor 17 is introduced into the solvent storage tank TN4.
例えば、溶剤の沸点が２００℃程度の場合には、蒸気温度が２００℃程度を維持した後、実質的な蒸留再生動作が完了すると、蒸気温度の降下が始まるので、蒸気温度の所定の温度降下時に蒸留再生処理を終えれば良い。 For example, when the boiling point of the solvent is about 200 ° C., after the vapor temperature is maintained at about 200 ° C., when the substantial distillation regeneration operation is completed, the vapor temperature starts to drop. Sometimes the distillation regeneration process may be finished.
そして、再生された混合溶剤と水とは、必要量の水を補給した状態で、例えば、リザーブタンク４又はリザーブタンク５に供給される。なお、ここでは、常圧下での動作を説明したが、図２の場合と同様に、減圧ラインを設けて、使用後の洗浄液Ｗ（劣化液）を低温沸騰させる構成を採っても良いのは勿論である。この場合には、引火性の洗浄剤ＮＷ（第１群の実施例）について、蒸留再生することもできる。 The regenerated mixed solvent and water are supplied to, for example, the reserve tank 4 or the reserve tank 5 in a state in which a necessary amount of water is supplied. Here, the operation under normal pressure has been described. However, as in the case of FIG. 2, it is possible to provide a pressure reducing line to bring the used cleaning liquid W (deteriorated liquid) to a low temperature boiling. Of course. In this case, the flammable cleaning agent NW (the first group of examples) can be regenerated by distillation.
＜蒸留再生システム３＞
図４は、連続式単蒸留方式を採った蒸留システムＳＹＳであり、蒸留塔１１に、使用後の洗浄液Ｗ（劣化液）を導入する機器構成を示している。この機器構成では、蒸留塔１１の劣化液は、減圧下、低温沸騰して、その蒸気が蒸留塔の充填物を通過してコンデンサ１７に導入される。なお、コンデンサ１７としては、スパイラル型のものが好適に使用される。
<Distillation regeneration system 3>
FIG. 4 shows a distillation system SYS that employs a continuous single distillation system, and shows an equipment configuration for introducing the used cleaning liquid W (deteriorated liquid) into the distillation column 11. In this equipment configuration, the deteriorated liquid of the distillation column 11 is boiled at a low temperature under reduced pressure, and the vapor passes through the packing of the distillation column and is introduced into the condenser 17. As the capacitor 17, a spiral type is preferably used.
そして、コンデンサ１７で凝縮した再生液は、デカンタなどの貯液槽２０を経由して、調整タンクＴＮ５に回収される。また、調整タンクＴＮ５の再生液については、比重計測部２１によって比重が管理されており、必要量の水が補充されることで、所定の液組成が維持される。 Then, the regenerated liquid condensed by the condenser 17 is collected in the adjustment tank TN5 via the liquid storage tank 20 such as a decanter. Further, the specific gravity of the regenerated liquid in the adjustment tank TN5 is managed by the specific gravity measuring unit 21, and a predetermined liquid composition is maintained by replenishing a necessary amount of water.
なお、図４の機器構成の場合にも、引火性の洗浄剤ＮＷ（第１群の実施例）について、蒸留再生することもできるのは勿論である。 In the case of the apparatus configuration shown in FIG. 4, it is needless to say that the flammable cleaning agent NW (Example of the first group) can be distilled and regenerated.
ＳＹＳ 蒸留システム
１０ リボイラー
１１ 蒸留塔
１２ 還流槽
１３ 中間槽
SYS distillation system 10 reboiler 11 distillation tower 12 reflux tank 13 intermediate tank
Claims (4)
化学式Ｒ３Ｏ［ＣＨ２ＣＨ２Ｏ］ｋＨの一種またはそれ以上の親水性溶剤（Ｒ３は炭素数１〜４のアルキル基、ｋは１〜３）と、を含有し、
水の含有率が１５Ｖｏｌ％以上である洗浄剤を蒸留再生する蒸留再生システムであって、
前記親油性溶剤と前記親水性溶剤は、常圧下での沸点差が５０℃以下であり、
使用後の洗浄剤を受けるリボイラーと、リボイラーからの蒸気を受ける蒸留塔と、蒸留塔からの蒸気を受けるコンデンサと、コンデンサの出力を受ける貯留槽と、を有して構成され、
常圧下で動作させるコンデンサの出力を、コンデンサの蒸気温度に基づいて、水を貯留すべき第１貯留槽か、混合溶剤を貯留すべき第２貯留槽かに供給する構成を採るか、或いは、
減圧下で動作させるコンデンサの出力を、単一の貯留槽に供給して、単一の貯留槽に回収された回収液の比重に基づいて、必要量の水を補充する構成を採ることを特徴とする蒸留再生システム。 One or more lipophilic solvents selected from the chemical formula R 1 O [C 3 H 6 O] n COCH 3 and / or the chemical formula R 2 O [C 3 H 6 O] m H (C 3 H 6 is CH 2 CH (CH 3 ) or CH 2 CH 2 CH 2 , R 1 is an alkyl group having 1 to 2 carbon atoms or an acetyl group, R 2 is an alkyl group having 3 to 6 carbon atoms, and n and m are 1 to 3) ,
One or more hydrophilic solvents of the formula R 3 O [CH 2 CH 2 O] k H (R 3 is an alkyl group having 1 to 4 carbon atoms, k is 1 to 3), and
A distillation regeneration system for distilling and regenerating a cleaning agent having a water content of 15 Vol% or more,
The lipophilic solvent and the hydrophilic solvent have a boiling point difference of 50 ° C. or less under normal pressure,
A reboiler for receiving the cleaning agent after use, and a distillation column for receiving the vapor from the reboiler, and a capacitor for receiving the vapor from the distillation column, is configured to have a, a reservoir for receiving the output of the capacitor,
The output of the capacitor to operate under normal pressure, based on the steam temperature of the capacitor, the first or reservoir should be storing water, a mixed solvent or a configuration supplied to either the second reservoir to be stored, or,
Supplying the output of the condenser operating under reduced pressure to a single storage tank and replenishing the required amount of water based on the specific gravity of the recovered liquid collected in the single storage tank Distillation regeneration system.
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