JPH0435701A - Method for recovering exhausted fluorocarbon solvent - Google Patents
Method for recovering exhausted fluorocarbon solventInfo
- Publication number
- JPH0435701A JPH0435701A JP14414890A JP14414890A JPH0435701A JP H0435701 A JPH0435701 A JP H0435701A JP 14414890 A JP14414890 A JP 14414890A JP 14414890 A JP14414890 A JP 14414890A JP H0435701 A JPH0435701 A JP H0435701A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- fluorocarbon
- solvent
- oil
- mixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000002904 solvent Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 12
- 230000004907 flux Effects 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 123
- 239000010812 mixed waste Substances 0.000 claims description 28
- 238000009835 boiling Methods 0.000 claims description 27
- 239000002699 waste material Substances 0.000 claims description 17
- 239000011297 pine tar Substances 0.000 claims description 13
- 229940068124 pine tar Drugs 0.000 claims description 13
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 11
- 235000011613 Pinus brutia Nutrition 0.000 claims description 11
- 241000018646 Pinus brutia Species 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 238000001816 cooling Methods 0.000 abstract description 15
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract 4
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract 4
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract 4
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 abstract 3
- 230000008021 deposition Effects 0.000 abstract 1
- 238000004821 distillation Methods 0.000 description 11
- 230000008929 regeneration Effects 0.000 description 10
- 238000011069 regeneration method Methods 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、例えば、フロン超音波洗浄装置の蒸溜槽内
におけるフロン液Ｒ１１３を蒸溜再生するような廃液溶
剤フロン回収方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for recovering fluorocarbons as a waste liquid solvent, such as distilling and regenerating fluorocarbon liquid R113 in a distillation tank of an ultrasonic fluorocarbon cleaning device.
（従来技術）
一般に、上述のフロン超音波洗浄装置でワークを洗浄お
よび脱脂する場合、このワークに付着したフラックスも
しくは油等が上述の蒸溜槽内のフロン液Ｒ１１３に混入
する。(Prior Art) Generally, when a workpiece is cleaned and degreased using the above-mentioned fluorocarbon ultrasonic cleaning device, flux, oil, etc. attached to the workpiece are mixed into the fluorocarbon liquid R113 in the above-mentioned distillation tank.
このようなフラックスが混合されたフロン液を蒸溜回収
する装置としては、従来、実公平１−４１４４７号公報
に記載のフロン蒸溜装置がある。Conventionally, as an apparatus for distilling and recovering a fluorocarbon liquid mixed with such flux, there is a fluorocarbon distillation apparatus described in Japanese Utility Model Publication No. 1-41447.
すなわち、フロン液中にフラックス、油等の汚液が混入
された混合液を受ける受液部と、この受液部下端に傾斜
状に連設され、混合液の流下面に凹凸部を有する流下板
と、上記流下板背面に配置したフロン液蒸発用の加熱ヒ
ータと、上記流下板の下端に配設した汚液タンクと、上
記加熱ヒータにより蒸発されたフロン蒸気を凝縮液化さ
せる冷却手段と、上記冷却手段下部に配置され、蒸溜再
生されたフロン液を受ける再生液タンクとを備えたフロ
ン蒸溜装置である。In other words, there is a liquid receiving part that receives a mixed liquid in which pollutants such as flux and oil are mixed in the fluorocarbon liquid, and a receiving part that is connected to the lower end of the liquid receiving part in an inclined manner and has an uneven part on the downstream surface of the mixed liquid. a plate, a heater for evaporating the fluorocarbon liquid arranged on the back side of the falling plate, a dirty liquid tank arranged at the lower end of the falling plate, and a cooling means for condensing and liquefying the fluorocarbon vapor evaporated by the heating heater; This fluorocarbon distillation apparatus is provided with a regeneration liquid tank that is disposed below the cooling means and receives regenerated fluorocarbon liquid by distillation.
この従来装置によれば、上述の受液部に混合液を送給し
て、この混合液を受液部下端から凹凸部を有する処理表
面積の大きい流下板に向けて流下し、加熱ヒータへの通
電加熱により、混合液中のフロン液を蒸発気化させる一
方、混合液中のフラックス、油等の汚液を蒸発させるこ
となく、流下板を流下して汚液タンクに流入させ、また
上述の加熱ヒータで蒸発されたフロン蒸気を冷却手段に
よって、凝縮液化して、この液化されたフロン蒸溜再生
液を再生液タンク内に貯溜し、このような作用を連続し
て行なうことで、多量のフロン液を連続して蒸溜再生す
ることができる。According to this conventional device, the mixed liquid is fed to the above-mentioned liquid receiving part, and the mixed liquid flows down from the lower end of the liquid receiving part toward the flow plate having a large processing surface area and having an uneven part, and is then sent to the heater. By heating with electricity, the fluorocarbon liquid in the mixed liquid is evaporated, while the flux, oil, and other dirty liquid in the mixed liquid are allowed to flow down the flow plate and into the dirty liquid tank without evaporating. The fluorocarbon vapor evaporated by the heater is condensed and liquefied by the cooling means, and the liquefied fluorocarbon distillation regeneration liquid is stored in the regeneration liquid tank. By continuously performing this action, a large amount of fluorocarbon liquid can be generated. can be distilled and regenerated continuously.
しかし、上述の従来装置においては次のような問題点が
あった。However, the conventional device described above has the following problems.
つまり、上述のフロン超音波洗浄装置でプリント配線基
板（Ｐ ＣＢ）を洗浄し、このＰＣＢ洗浄後のフロン液
を上述の従来装置で蒸溜する場合、ＰＣＢと電子部品と
のハンダ付けに用いられるハンダ（例えばＪＩＳＣ２５
１２、米国連邦規格。In other words, when cleaning a printed wiring board (PCB) with the above-mentioned fluorocarbon ultrasonic cleaning device and distilling the fluorocarbon solution after cleaning the PCB with the above-mentioned conventional device, the solder used to solder the PCB and electronic components (For example, JISC25
12. United States Federal Standards.
ＱＳ−５７１）やペースト中には腐食性、絶縁性に優れ
る松ヤニが用いられるので、たとえフロンＲ１１３中に
エタノール（ｅｔｈａｎｏｌ エチルアルコールのこ
と）や安定剤入りのエタノールを混合して、ＰＣＢを洗
浄しても、フロン中に混合した上述の松ヤニがフロン蒸
溜装置の流下板や配管内部等に付着して、流下面や配管
が詰り、良好なフロン液の回収に支障をきたす問題点が
あった。QS-571) and paste use pine resin, which has excellent corrosive and insulating properties, so even if you mix ethanol (ethyl alcohol) or ethanol with a stabilizer in Freon R113 to clean the PCB. However, there is a problem in that the above-mentioned pine tar mixed in the fluorocarbon adheres to the flow-down plate and inside of the piping of the fluorocarbon distillation equipment, clogging the flow-down surface and piping, and hindering the recovery of good fluorocarbon liquid. Ta.
（発明の目的）
この発明は、フロン液中に松ヤニが混合したフラックス
混合廃液からフロンＲ１１３を良好に回収することがで
き、流下板主面および配管内や装置内部への松ヤニの付
着を防止することができる廃液溶剤フロン回収方法の提
供を目的とする。(Objective of the Invention) This invention can effectively recover Freon R113 from a flux mixture waste liquid containing pine resin mixed in the Freon liquid, and prevents the attachment of pine resin to the main surface of the flow plate, inside the pipes, and inside the equipment. The purpose of the present invention is to provide a method for recovering fluorocarbons as a waste liquid solvent.
（発明の構成）
この発明は、フロン液中に松ヤニが混合したフラックス
混合廃液からフロンＲ１１３を回収する廃液溶剤フロン
回収方法であって、上記フラックス混合廃液に高沸点オ
イルを所定量混入する工程と、上記オイル混合廃液を流
下板に流下させながら、フロンＲ１１３の沸点以上に加
熱して、オイル混合廃液からフロンＲ１１３を分離する
工程と、分離したフロンＲ１１３を凝縮液化して、蒸溜
再生液を新液タンクに貯溜すると共に、高沸点オイルに
より流動性が付加された松ヤニと上記高沸点オイルとを
回収タンクに貯溜する工程とを備えた廃液溶剤フロン回
収方法であることを特徴とする。(Structure of the Invention) The present invention is a waste liquid solvent fluorocarbon recovery method for recovering fluorocarbon R113 from a flux mixed waste liquid in which pine tar is mixed in the fluorocarbon liquid, and the method includes a step of mixing a predetermined amount of high boiling point oil into the flux mixed waste liquid. and a step of separating Freon R113 from the oil mixed waste liquid by heating it to a temperature higher than the boiling point of Freon R113 while flowing the oil mixed waste liquid down a flow plate, and condensing and liquefying the separated Freon R113 to obtain a distilled regenerated liquid. The present invention is characterized by a method for recovering fluorocarbons as a waste liquid solvent, which comprises the steps of storing new liquid in a tank and storing pine tar to which fluidity has been added with high-boiling point oil and the above-mentioned high-boiling point oil in a recovery tank.
（発明の効果）
この発明によれば、フラックス混合廃液に対して所定量
の高沸点オイルを混入゛するので、上述の流下板でオイ
ル混合廃液を加熱して、このオイル混合廃液からフロン
Ｒ１１３を分離する時、高沸点オイルが蒸発してフロン
蒸気中に混入することがなく、しかも、この高沸点オイ
ルにより松ヤニに流動性を付加することができるので、
この松ヤニが流下板主面および配管内や装置内部へ付着
するのを確実に防止することができる。(Effects of the Invention) According to the present invention, since a predetermined amount of high boiling point oil is mixed into the flux mixed waste liquid, the oil mixed waste liquid is heated by the above-mentioned flow down plate, and Freon R113 is extracted from the oil mixed waste liquid. During separation, the high boiling point oil does not evaporate and get mixed into the freon vapor, and this high boiling point oil can add fluidity to the pine tar.
It is possible to reliably prevent this pine resin from adhering to the main surface of the falling plate, inside the pipes, and inside the device.
この結果、フロン液中に松ヤニが混合したフラックス混
合廃液からフロンＲ１１３を良好に回収することができ
る効果かある。As a result, there is an effect that Freon R113 can be well recovered from the flux mixed waste liquid in which pine resin is mixed in the Freon liquid.
（実施例） この発明の一実施例を以下図面に基づいて詳述する。(Example) An embodiment of the present invention will be described in detail below based on the drawings.
図面は廃液溶剤フロン回収方法に用いるフロン回収装置
を示し、上部開口にフィルタ１を張架した汚液槽２を設
け、この汚液槽２内にはＰＣＢ洗浄後のフラックス混合
廃液Ａを投入する。The drawing shows a fluorocarbon recovery device used in a waste liquid solvent fluorocarbon recovery method, and a waste liquid tank 2 with a filter 1 stretched over the upper opening is provided, and a flux mixed waste liquid A after PCB cleaning is poured into the waste liquid tank 2. .
上述の汚液槽２の下部と処理槽３との間を、主洸ライン
４で連結し、この主流ライン４には送液ポンプ５を介設
している。The lower part of the sewage tank 2 and the processing tank 3 are connected by a main line 4, and a liquid feeding pump 5 is interposed in the main line 4.
上述の処理槽３は略密閉状に構成し、この処理槽３内の
受液部６と槽３外とを連通するように開口部７を形成し
ている。The processing tank 3 described above is configured in a substantially hermetically sealed manner, and an opening 7 is formed so that the liquid receiving section 6 inside the processing tank 3 communicates with the outside of the tank 3.
上述の受液部６の下端には後述するオイル混合廃液の流
下を案内する流下板８を傾斜状に連設している。At the lower end of the above-mentioned liquid receiving part 6, a flow-down plate 8 is provided in an inclined manner to guide the flow of the oil-mixed waste liquid, which will be described later.
そして、この流下板８の液流下面には、凹凸部９を一体
的に形成して処理表面積の拡大を図ると共に、この流下
板８の背面にはフロン液蒸発用の加熱ヒータ１０を配設
している。An uneven portion 9 is integrally formed on the lower surface of the liquid flow plate 8 to expand the processing surface area, and a heater 10 for evaporating the fluorocarbon liquid is provided on the back surface of the flow plate 8. are doing.
上述の加熱ヒータ１０は、通電により約６０〜１００℃
に加熱制御して、沸騰点が４７，６℃のフロン液を蒸発
気化させる。The above-mentioned heater 10 has a temperature of approximately 60 to 100°C when energized.
The heating is controlled to evaporate the fluorocarbon liquid whose boiling point is 47.6°C.
また、上述の流下板８の下端には汚液Ｃ（高沸点オイル
Ｅと松ヤニとが混合したもの）を貯溜する汚液タンク１
１を配設すると共に、この汚液タンク１１の底部には汚
液取出し管１２を連設し、また汚液タンク１１の反流下
板側の側壁１１ａを上方に延設して仕切板１３を一体形
成している。Further, at the lower end of the above-mentioned flow-down plate 8, there is a sewage tank 1 that stores sewage C (a mixture of high boiling point oil E and pine resin).
At the same time, a sewage take-out pipe 12 is connected to the bottom of the sewage tank 11, and a side wall 11a on the opposite flow lower plate side of the sewage tank 11 is extended upward to form a partition plate 13. are integrally formed.
さらに、この仕切板１３を隔てた反流下板側には、加熱
ヒータ１０により蒸発されたフロン蒸気りを凝縮液化さ
せる冷却手段としての冷却コイル１４を配設している。Further, on the opposite flow lower plate side across the partition plate 13, a cooling coil 14 is disposed as a cooling means for condensing and liquefying the fluorocarbon vapor evaporated by the heater 10.
この実施例では、上述の冷却コイル１４としては冷凍機
１５のエバポレータを用いている。In this embodiment, the evaporator of the refrigerator 15 is used as the above-mentioned cooling coil 14.
因に、上述の冷凍機１５はフロンＲ−１１、Ｒ−１２、
Ｒ−２２等の冷媒を用いる冷凍機で、この冷凍機１５は
圧縮機の吐出側に凝縮器、受液器、液電磁弁、膨張機構
としての膨張弁を介して前述のエバポレータを接続し、
このエバポレータの後位をアキュームレータを介して圧
縮機の吸引側に接続した冷凍サイクルで、圧縮機の駆動
により、同圧縮機で圧縮され高圧となった冷媒が、凝縮
器に送られ、ここで液化して受液器に至った後に、この
高圧冷媒液は液電磁弁を介して膨張弁に導かれ、この弁
で絞り膨張されて低圧となった冷媒はエバポレータ内に
入り、周囲より熱を奪って蒸発して蒸発ガスとなり、ア
キュムレータを介して再び圧縮機に吸込まれる。Incidentally, the above-mentioned refrigerator 15 uses Freon R-11, R-12,
This refrigerator 15 uses a refrigerant such as R-22, and the above-mentioned evaporator is connected to the discharge side of the compressor via a condenser, a liquid receiver, a liquid electromagnetic valve, and an expansion valve as an expansion mechanism.
In the refrigeration cycle, the rear part of the evaporator is connected to the suction side of the compressor via an accumulator, and when the compressor is driven, the refrigerant compressed by the compressor to high pressure is sent to the condenser, where it is liquefied. After reaching the liquid receiver, this high-pressure refrigerant liquid is guided to an expansion valve via a liquid solenoid valve, and the refrigerant is throttled and expanded by this valve to a low pressure, enters the evaporator, and absorbs heat from the surroundings. It evaporates into vaporized gas, which is sucked into the compressor again via the accumulator.
上述のエバポレータにより構成した冷却コイル１４の下
部には、凝縮液化して蒸溜再生されたフロン液、つまり
フロン蒸溜再生液Ｆを受ける再生液タンク１６を配設し
、この再生液タンク１６の底部に再生液取出し管１７を
連設している。At the bottom of the cooling coil 14 constituted by the above-mentioned evaporator, there is disposed a regeneration liquid tank 16 that receives a fluorocarbon liquid that has been condensed and liquefied and regenerated by distillation, that is, a fluorocarbon distillation regeneration liquid F. A regeneration liquid take-out pipe 17 is provided in series.
また上述の再生液取出し管１７には液バイブ１８を連設
し、この液パイプ１８の液出口部下方には蒸溜再生され
たフロン新液を貯溜する液貯溜タンク１９．を配設して
いる。Further, a liquid vibrator 18 is connected to the above-mentioned regenerated liquid take-out pipe 17, and a liquid storage tank 19 is provided below the liquid outlet of the liquid pipe 18 to store the fresh fluorocarbon liquid that has been distilled and regenerated. has been set up.
一方、上述の汚液タンク１１下部の汚液取出し管１２に
は液パイプ２０を介して回収タンク２１を連通し、この
回収タンク２１内の上部には高沸点オイルＥと松ヤニと
を分離するフィルタ２２を交換可能に張架している。On the other hand, a collection tank 21 is connected to the waste liquid take-out pipe 12 at the bottom of the waste liquid tank 11 through a liquid pipe 20, and a high boiling point oil E and pine tar are separated from each other in the upper part of the recovery tank 21. The filter 22 is suspended so that it can be replaced.
ところで、上述の処理槽３内において、流下板８の下端
上部と冷却コイル１４との間には、フラックスや油等の
汚液Ｃが冷却コイル１４側に飛散するのを防止するため
に、上述の両者８，１４間を上下方向に仕切るバッフル
プレート２３を設け、このバッフルプレート２３により
冷却コイル１４の汚染を防止すべく構成している。By the way, in the above-mentioned processing tank 3, there is a space between the upper part of the lower end of the flow-down plate 8 and the cooling coil 14 in order to prevent the dirty liquid C such as flux or oil from scattering toward the cooling coil 14 side. A baffle plate 23 is provided to partition both 8 and 14 in the vertical direction, and this baffle plate 23 is configured to prevent contamination of the cooling coil 14.
次に、廃液溶剤フロン回収方法について説明する。Next, a method for recovering the waste liquid solvent Freon will be explained.
フロン超音波洗浄装置でワークとしてのＰＣＢを洗浄す
ると、フロン液Ｒ１１３中に松ヤニを含むフラックスや
油等の汚液が混入する。When a PCB as a workpiece is cleaned using a fluorocarbon ultrasonic cleaning device, dirty fluids such as flux and oil containing pine tar are mixed into the fluorocarbon solution R113.
上述のフロン液中に松ヤニが混合したフラックス混合廃
液Ａを、まず汚液槽２に投入し、フィルタ１てゴミ等を
除去する。The above-mentioned flux mixed waste liquid A containing pine resin mixed with the fluorocarbon liquid is first put into the waste liquid tank 2, and the filter 1 is used to remove dust and the like.
次に、上述のフラックス混合廃液へに高沸点オイルＥを
所定量混入して、オイル混合廃液Ｂを形成する。Next, a predetermined amount of high boiling point oil E is mixed into the above-mentioned flux mixed waste liquid to form oil mixed waste liquid B.
ここで、上述の高沸点オイルＥとしては、沸点が１５０
〜１６０℃のダブニーオイルＮ２２を用い、この高沸点
オイルＥを例えばフラックス混合廃液Ａ１００ マｏ１
％に対して２０ｖｏ１％の割合で混合する。Here, the above-mentioned high boiling point oil E has a boiling point of 150
Using Dabney oil N22 at ~160°C, this high boiling point oil E is mixed with flux mixed waste liquid A100 Mao1.
% and mix at a ratio of 20vo1%.
なお、上述のフラックス混合廃液Ａ中のフロンＲ１１３
と松ヤニとの割合比率は例えばフロンＲ１１３が８Ｑｖ
ｏ１％に対して、松ヤニが２０ マ０％で、この松ヤニ
は上述の高沸点オイルＥに対して不溶性を示す。In addition, Freon R113 in the above-mentioned flux mixed waste liquid A
For example, Freon R113 is 8Qv.
1% of pine resin is 20% of pine resin, and this pine resin is insoluble in the above-mentioned high boiling point oil E.
次、送液ポンプ５を駆動して、汚液槽２内のオイル混合
廃液Ｂを主流ライン４の先端から処理槽３の受液部６に
供給する。Next, the liquid sending pump 5 is driven to supply the oil mixed waste liquid B in the waste liquid tank 2 from the tip of the main flow line 4 to the liquid receiving part 6 of the processing tank 3.
そこで、上述の加熱ヒータ１０を通電加熱して、受液部
３からオイル混合廃液Ｂを上述の流下板８に流下させる
と、オイル混合廃液Ｂのフロン液は沸点以上に加熱され
て蒸発気化して、フロン蒸気りとなる一方、オイル混合
廃液Ｂ中の高沸点オイルＥおよび松ヤニは蒸発しない。Therefore, when the above-mentioned heater 10 is electrically heated and the oil mixed waste liquid B is caused to flow down from the liquid receiving part 3 to the above-mentioned flow down plate 8, the fluorocarbon liquid of the oil mixed waste liquid B is heated above the boiling point and evaporates. As a result, fluorocarbon vapor is produced, but the high boiling point oil E and pine tar in the oil mixed waste liquid B do not evaporate.
また、上述の松ヤニは高沸点オイルＥにより流動性が付
加されて、処理表面積の大きい上述の流下板８を流下し
、汚液Ｃ（高沸点オイルＥと松ヤニ）となって汚液タン
ク１１に流下した後に、液パイプ２０を介して回収タン
ク２１に流下し、同タンク２１上部のフィルタ２２で松
ヤニが除去され、同タンク２１下部には高沸点オイルＥ
が回収される。In addition, the above-mentioned pine tar is given fluidity by the high-boiling point oil E, flows down the above-mentioned flow-down plate 8 having a large treated surface area, becomes sewage liquid C (high-boiling point oil E and pine tar), and becomes a sewage tank. 11, it flows down to the recovery tank 21 via the liquid pipe 20, where the pine tar is removed by the filter 22 at the top of the tank 21, and the high boiling point oil E is stored at the bottom of the tank 21.
is collected.
一方、上述の冷凍機１５を駆動すると、冷却コイル１４
がエバポレータとして作用するので、上述の加熱ヒータ
１０で蒸発されたフロン蒸気りは、４７．６℃と−２０
〜−３０℃との温度差に起因し、かつ凝縮液化による体
積縮小によって、バッフルプレート２３と処理槽３ケー
シングとの間の隙間、バッフルプレート２３と汚液タン
ク１１および仕切板１３との間の各隙間を介して冷却コ
イル１４側に吸引される。On the other hand, when the above-mentioned refrigerator 15 is driven, the cooling coil 14
acts as an evaporator, the fluorocarbon vapor evaporated by the heater 10 mentioned above has a temperature of 47.6°C and -20°C.
Due to the temperature difference between -30°C and volume reduction due to condensation and liquefaction, the gaps between the baffle plate 23 and the casing of the processing tank 3, and between the baffle plate 23 and the waste liquid tank 11 and the partition plate 13 It is attracted to the cooling coil 14 side through each gap.
この冷却コイル１４側に吸引されたフロン蒸気りは同コ
イル１４により凝縮液化されてフロン蒸溜再生液Ｆとな
り、この再生液Ｆは冷却コイ几１４下方の再生液タンク
１６内に貯溜される。The fluorocarbon vapor drawn into the cooling coil 14 is condensed and liquefied by the coil 14 to become a fluorocarbon distilled regeneration liquid F, and this regeneration liquid F is stored in the regeneration liquid tank 16 below the cooling coil 14.
この再生液タンク１６内に貯溜されたフロン蒸溜再生液
Ｆは再生液取出し管１７および液パイプ１８を介してフ
ロン新液貯溜用の液貯溜タンク１９内に順次貯溜される
。The fluorocarbon distilled regenerating liquid F stored in the regenerating liquid tank 16 is sequentially stored in a liquid storage tank 19 for storing new fluorocarbon liquid via a regenerating liquid take-out pipe 17 and a liquid pipe 18.
なお、上述の液貯溜タンク１９内のフロン蒸溜再生液Ｆ
の純度を高める目的で、このフロン蒸溜再生液Ｆを上述
の各要素７．６．９．１６．１７゜１８．１９の順で連
続循環させてもよい。Note that the fluorocarbon distillation regeneration liquid F in the liquid storage tank 19 mentioned above
For the purpose of increasing the purity of the fluorocarbon distillation regenerated liquid F, the above-mentioned elements 7, 6, 9, 16, 17, 18, 19 may be continuously circulated in this order.
このように、フラックス混合廃液Ａに対して所定量の高
沸点オイルＥを混入するので、上述の流下板８でオイル
混合廃液Ｂを加熱して、このオイル混合廃液Ｂからフロ
ンＲ１１３を分離する時、高沸点オイルＥが蒸発してフ
ロン蒸気り中に混入することがなく、シかも、この高沸
点オイルＥにより松ヤニに流動性を付加することができ
るので、この松ヤニが流下板８主面および配管内や装置
内部へ付着するのを確実に防止することができる。In this way, since a predetermined amount of high boiling point oil E is mixed into the flux mixed waste liquid A, when the oil mixed waste liquid B is heated by the above-mentioned flow down plate 8 and the Freon R113 is separated from this oil mixed waste liquid B. The high boiling point oil E will not evaporate and mix into the freon vapor, and the high boiling point oil E can add fluidity to the pine tar. It is possible to reliably prevent it from adhering to surfaces, inside piping, and inside the equipment.
この結果、フロン液中に松ヤニが混合したフラックス混
合廃液ＡからフロンＲ１１３を良好に回収することがで
きる効果がある。As a result, there is an effect that Freon R113 can be well recovered from the flux mixed waste liquid A in which pine tar is mixed in the Freon liquid.
この発明の構成と、上述の実施例との対応において、
この発明の新液タンクは、実施例の貯溜タンク１９に対
応するも、
この発明は、上述の実施例の構成のみに限定されるもの
ではない。Regarding the correspondence between the structure of this invention and the above-described embodiment, the new liquid tank of this invention corresponds to the storage tank 19 of the embodiment, but this invention is limited only to the structure of the above-described embodiment. isn't it.
図面は廃液溶剤フロン回収方法に用いる装置の一実施例
を示す系統図である。
８・・・流下板 １９・・・液貯溜タンク２
１・・・回収タンク
Ａ・・・フラックス混合廃液
Ｂ・・・オイル混合廃液The drawing is a system diagram showing one embodiment of an apparatus used in a waste liquid solvent fluorocarbon recovery method. 8... Flowing plate 19... Liquid storage tank 2
1... Recovery tank A... Flux mixed waste liquid B... Oil mixed waste liquid
Claims (1)
液からフロンＲ１１３を回収する廃 液溶剤フロン回収方法であって、 上記フラックス混合廃液に高沸点オイルを 所定量混入する工程と、 上記オイル混合廃液を流下板に流下させな がら、フロンＲ１１３の沸点以上に加熱し て、オイル混合廃液からフロンＲ１１３を 分離する工程と、 分離したフロンＲ１１３を凝縮液化して、 蒸溜再生液を新液タンクに貯溜すると共に、高沸点オイ
ルにより流動性が付加された松 ヤニと上記高沸点オイルとを回収タンクに 貯溜する工程とを備えた 廃液溶剤フロン回収方法。(1) A waste liquid solvent fluorocarbon recovery method for recovering fluorocarbon R113 from a flux mixed waste liquid in which pine tar is mixed in the fluorocarbon liquid, comprising: mixing a predetermined amount of high boiling point oil into the flux mixed waste liquid; A process of separating Freon R113 from the oil mixed waste liquid by heating it above the boiling point of Freon R113 while flowing it down a flow plate, and condensing and liquefying the separated Freon R113 and storing the distilled regenerated liquid in a new liquid tank. A method for recovering fluorocarbons as a waste liquid solvent, which also includes the step of storing pine resin to which fluidity is added by high-boiling point oil and the above-mentioned high-boiling point oil in a recovery tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414890A JPH0435701A (en) | 1990-05-31 | 1990-05-31 | Method for recovering exhausted fluorocarbon solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414890A JPH0435701A (en) | 1990-05-31 | 1990-05-31 | Method for recovering exhausted fluorocarbon solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435701A true JPH0435701A (en) | 1992-02-06 |
Family
ID=15355336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14414890A Pending JPH0435701A (en) | 1990-05-31 | 1990-05-31 | Method for recovering exhausted fluorocarbon solvent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435701A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000189702A (en) * | 1998-10-22 | 2000-07-11 | Akio Goto | Method of recovering solvent component in waste paint, waste solvent and waste washing solvent |
| CN106215500A (en) * | 2016-08-19 | 2016-12-14 | 中国人民解放军海军工程大学 | A kind of freon purifier using distillation mode |
-
1990
- 1990-05-31 JP JP14414890A patent/JPH0435701A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000189702A (en) * | 1998-10-22 | 2000-07-11 | Akio Goto | Method of recovering solvent component in waste paint, waste solvent and waste washing solvent |
| CN106215500A (en) * | 2016-08-19 | 2016-12-14 | 中国人民解放军海军工程大学 | A kind of freon purifier using distillation mode |
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