JPS58207902A - Recovery of oil adhered to metal - Google Patents
Recovery of oil adhered to metalInfo
- Publication number
- JPS58207902A JPS58207902A JP57090515A JP9051582A JPS58207902A JP S58207902 A JPS58207902 A JP S58207902A JP 57090515 A JP57090515 A JP 57090515A JP 9051582 A JP9051582 A JP 9051582A JP S58207902 A JPS58207902 A JP S58207902A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- oils
- fats
- tank
- metals
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は金属類の加工時に用すた油脂類のうち、金属類
に付着したものを回収、再使用するたＤの回収、再使用
方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for recovering and reusing oils and fats attached to metals from among oils and fats used in processing metals.
鉄板、兼線、パイプその他の圧延や引き抜き、金属の切
削、研磨、焼入れ等金属の加工をスムーズに行うため油
脂類が多く用いられる。これらの油脂は、当然金属表面
に付着するが、次工掻以後において不都合を生ずるため
洗浄除去され、ｂことになろう
従来量も一般的な油脂の除去方法は、所謂アルカリ洗浄
である。この場合油脂はアルカリで一部分解され、残部
は乳濁状態の廃液を生ずるっこの方法の欠点はまず、洗
浄に要する時間が比較的長いこと、油脂除去後の廃液の
処理、即ちＢＯＤ、ＣＯＤの減少処理、っＨの調整等厄
介な問題がある。Oils and fats are often used to smoothly process metals, such as rolling and drawing iron plates, wires, pipes, etc., cutting, polishing, and hardening metals. These fats and oils naturally adhere to the metal surface, but since they cause inconvenience after the next process, they are washed away.The conventional method for removing fats and oils is so-called alkaline cleaning. In this case, the fats and oils are partially decomposed with alkali, and the remaining part produces a waste liquid in an emulsified state.The disadvantages of this method are that the cleaning time is relatively long, and the treatment of the waste liquid after removing the fats and oils, that is, the BOD and COD There are troublesome problems such as reduction processing and adjustment of H.
そこでパークロルエチレンやトリクａルエチレン、
１，１．１−）リクロルエタンなどの有機溶剤を用いて
洗浄する方法も提案された。Therefore, perchlorethylene and trichlorethylene,
A method of cleaning using an organic solvent such as 1,1.1-)lichloroethane has also been proposed.
こ几により、金属に付着した油脂の除去速度は向上し念
が２一般に有機溶剤、特に塩素化溶剤と機械、工作油等
の油脂との混合物は、両者の沸点は天′きな差があるに
刀１かわらず完全分層は容易でない。例えば、パークロ
ルエチレンやトリクロルエチレン等の溶剤と機械油との
混合物を常圧下に単蒸溜によって分離しようとすると、
低沸点成分である溶剤を約５つ％種度含有した状態で沸
点の上昇を来たし、これを更に加熱すると油の劣化温度
である１３９０以上、場合（二よっては１５０℃を越え
てしまう。This method improves the rate of removal of oils and fats attached to metals.In general, when organic solvents, especially chlorinated solvents, are mixed with oils and oils such as machine oil, there is a huge difference in the boiling points of the two. It is not easy to completely separate the layers, even if it is only 1 sword. For example, if a mixture of a solvent such as perchlorethylene or trichlorethylene and machine oil is separated by simple distillation under normal pressure,
The boiling point rises when it contains approximately 5% of the solvent, which is a low boiling point component, and when it is further heated, it exceeds the deterioration temperature of oil, 1390°C, and in some cases exceeds 150°C.
また溶剤を約５０％も含有する機械油は一般に用途がな
いため、廃油として焼却されることになる。即ち、従来
金属類の加工時に使用される油のうち、該金属類に付着
して持ち去られる部分は最早回収不能分と着像されてい
たのである。Furthermore, machine oil containing about 50% solvent is generally of no use and is therefore incinerated as waste oil. That is, of the oil conventionally used when processing metals, the portion that adheres to the metals and is carried away is considered to be unrecoverable.
本発明者等は、金属加工、即ち金属の切削。The inventors are involved in metal processing, that is, cutting metal.
穿孔、圧延、引抜き、プレス、焼入れ、焼鈍。Drilling, rolling, drawing, pressing, hardening, annealing.
表面保護等の加工工程において潤滑、冷却。Lubricating and cooling in processing processes such as surface protection.
防錆その他の目的で該金属上に塗布され、又は付着する
油脂の１が意外と多いことに着目し、これら全回収し、
有効に利用する方法を検討した結果、本発明に到達した
。皿ち本発明は金属類のＩ工に際し付着した油脂ｉを有
機溶剤洗浄により溶解除去し、該油脂を含有する溶剤を
蒸溜することにより、溶剤を回収し、これを溶剤洗浄に
供すると共に、蒸溜残分け、これに新たな油脂を補充し
た後、上記加工工程に再使用することを特徴とする金属
類の加工用油脂の回収、再使用方法である。Noting that there is a surprisingly large amount of oil and fat that is applied or attached to the metal for rust prevention and other purposes, we collected all of them,
As a result of studying ways to utilize this effectively, we have arrived at the present invention. Dish This invention dissolves and removes oils and fats that have adhered during I-working of metals by washing with an organic solvent, and distills the solvent containing the oil and fats to recover the solvent. This is a method for collecting and reusing oils and fats for processing metals, which is characterized in that the remaining oils and fats are separated, replenished with new oils and fats, and then reused in the above-mentioned processing steps.
本発明においては、まず、溶剤洗浄に供した後の油脂を
溶解して−いる溶剤（以下単に油脂溶液ともいう）から
蒸溜手段により溶剤を回収した後の蒸溜残分に新たな油
脂類を加えて、得られる混合油中の溶剤含量が、金属類
の加工時に用いる油脂として使用可能な範囲の量になる
まで低下せしめた後、該加工に供することにより無駄な
く油脂類を使用することが可能となる。In the present invention, first, new oils and fats are added to the distillation residue after the solvent is recovered by distillation means from the solvent in which the oils and fats are dissolved after being subjected to solvent cleaning (hereinafter also simply referred to as an oil and fat solution). After reducing the solvent content in the resulting mixed oil to a level that can be used as oil and fat used in processing metals, it is possible to use the oil and fat without waste by subjecting it to the processing. becomes.
更に本発明を効率よく行うためには、油脂溶液を蒸溜す
る方法を工夫し、蒸溜残分に含まれる溶剤量を可及的に
減少させることである。一般（二は常圧下での単蒸溜に
よっテハ、油の劣化温度を加味して、１２０℃以下では
約３０Ｘもの溶剤を回収することができないっこの場合
、例えば再使用可能な溶剤残存量が６Ｘであるとすれば
、新たな油により５倍以上に襠釈する必要がある。一般
に、回収される油脂の量は、加工に使われる全油脂量に
比して少量であり、また加工時のこぼれ、その他の損失
分の補填も必要となり、この程度の油の追加は油脂の収
支をくずすものではないが、更に溶剤を十分分離する手
段を講するのが好ましい。本発明において好ましい蒸溜
手段は、一旦常圧下に１２０℃以下で蒸溜し、溶剤の回
収を行い、次いで薄膜蒸溜、減圧蒸溜、水蒸気蒸溜など
有効な蒸溜手段に付して蒸溜残分中の溶剤量を５％以下
に減少させるのが好着しい。これらのうちで、設備費、
後処理などを含めたランニングコストの面から、第１段
目の常圧下での蒸溜は、複数段単蒸溜方式を用い、第２
段目は、減圧蒸溜を１み合せて用いるのがｉｋも有効と
なるっ
また使用する溶剤は、特に限定されないが、一般に塩素
化炭化水素系溶剤、例えばテトラクロルエチレン、
１１１．１−）す７０ルエタン、 １＋１＋２−）
リクロルエタン、トリクロルエチレン、ジクロルエチレ
ン、クロルホルＡ、塩化メチレン、フロン−１，１，３
などがあり、特に毒性が低く、沸点が低いこと及び油脂
に対する洗浄力が大きく且つ蒸溜分離性が良好なことか
ら、メチレンクロリドの使用が好ましｈ０勿論場合によ
ってはインプロピルアルコール、アセトン、石油ベンジ
ンなども使用される。更にこれらの溶剤は、通常使用さ
れる安定剤等を含有していてもよい。Furthermore, in order to carry out the present invention efficiently, it is necessary to devise a method for distilling the oil and fat solution and to reduce the amount of solvent contained in the distillation residue as much as possible. General (2) In this case, approximately 30X of solvent cannot be recovered at temperatures below 120°C by simple distillation under normal pressure, taking into account the deterioration temperature of the oil. If 6 It is also necessary to compensate for spillage and other losses, and although the addition of this amount of oil does not destroy the balance of oil and fat, it is preferable to take measures to sufficiently separate the solvent.A distillation method preferred in the present invention is first distilled under normal pressure at 120°C or lower to recover the solvent, and then subjected to effective distillation methods such as thin film distillation, vacuum distillation, and steam distillation to reduce the amount of solvent in the distillation residue to 5% or less. Of these, equipment costs,
In terms of running costs, including post-processing, the first stage distillation under normal pressure is carried out using a multi-stage single distillation method, and the second stage distillation is carried out under normal pressure.
In the second stage, it is effective to use vacuum distillation in combination.Although the solvent used is not particularly limited, it is generally a chlorinated hydrocarbon solvent, such as tetrachloroethylene,
111.1-) 70 ruethane, 1+1+2-)
Lichloroethane, trichlorethylene, dichloroethylene, chlorophor A, methylene chloride, Freon-1,1,3
It is preferable to use methylene chloride because of its low toxicity, low boiling point, high detergency against fats and oils, and good distillation separation properties. etc. are also used. Furthermore, these solvents may contain commonly used stabilizers and the like.
以下第１図により本発明を具体的に説明する。図中１は
金属類加工工程であり、油だめ２より加工油が適宜供給
されていることを概念的に示したものである。３は金属
類に付着した油脂を溶剤洗浄すると共に常圧下での単蒸
溜を行うための装置である。即ち、溶剤洗浄槽４中に、
油脂類の付着Ｉ−た金属加工品５を浸漬し油脂類を溶解
除去し、次いで、該金属加工品を溶剤液面上空間部６に
引き上げ溶剤蒸気に曝して蒸気洗浄し、取り出される。The present invention will be specifically explained below with reference to FIG. In the figure, reference numeral 1 indicates a metal processing process, and conceptually shows that processing oil is appropriately supplied from an oil sump 2. 3 is an apparatus for cleaning oils and fats adhering to metals with a solvent and carrying out simple distillation under normal pressure. That is, in the solvent cleaning tank 4,
The metal workpiece 5 to which oils and fats have adhered is immersed to dissolve and remove the oils and fats, and then the metal workpiece is pulled up to the space 6 above the solvent surface and exposed to solvent vapor for steam cleaning, and then taken out.
溶剤の蒸気は、金属加工品上又は冷却管７によって凝縮
され溶剤槽４に落下する。このため溶剤槽４中の微量の
油脂分を含んだ溶剤量は増加しオーバーフローによって
蒸発槽８に移行する。蒸発槽では適当な加熱手段９によ
って、溶剤溶液を加熱し、所謂単蒸溜の原理によって溶
剤の蒸気が発生し、空間部６に供給される。かくして、
蒸発槽８には高濃度の油脂数を含む溶剤が蓄積するので
、これをパイプライン２０によって減圧源溜装置の蒸発
缶１０に供給する蒸発缶はエジェクターその他の手段１
１で減圧されており、溶剤の蒸発を助ける。蒸発された
溶剤は凝縮益１２等により液化され、パイプライン２１
よりタンク１３に回収される。これはパイプライン２２
により洗浄工程に循環再使用される。他方蒸溜残分け、
パイプライン２３により適宜金属加工工程の油溜め２へ
戻される。ここでは２４より新しく油脂が供給されて油
溜め２内の溶剤濃度は金属加工時における許容濃度範囲
内に保持される。同図中２５からは不足する溶剤を補給
することができる。また各パイプラインの途中等におい
て、脱水乾燥工程を経由させることも任意である。The solvent vapor is condensed on the metal workpiece or by the cooling pipe 7 and falls into the solvent bath 4 . Therefore, the amount of solvent containing a trace amount of oil and fat in the solvent tank 4 increases and transfers to the evaporation tank 8 due to overflow. In the evaporation tank, the solvent solution is heated by a suitable heating means 9, and solvent vapor is generated and supplied to the space 6 according to the so-called simple distillation principle. Thus,
Since solvent containing a high concentration of oil and fat accumulates in the evaporator tank 8, the evaporator that supplies this to the evaporator 10 of the vacuum source storage device via the pipeline 20 is an ejector or other means 1.
1 to help evaporate the solvent. The evaporated solvent is liquefied by condensation gain 12, etc., and is transferred to pipeline 21.
It is recovered into the tank 13. This is pipeline 22
It is recycled and reused in the cleaning process. On the other hand, the distillation residue is separated,
The pipeline 23 appropriately returns the oil to the oil sump 2 for the metal processing process. Here, fresher oil is supplied than 24, and the solvent concentration in the oil reservoir 2 is maintained within the allowable concentration range during metal processing. Insufficient solvent can be replenished from 25 in the figure. It is also optional to pass through a dehydration and drying process in the middle of each pipeline.
第１図は本発明の工程の１例を示す図である。図中１は
金属類の加工工程を、２は金属加工時に用いる油脂類の
溜槽を示す。３は溶剤洗浄装置であり、−５４は洗浄槽
、５は被洗浄物、８は蒸気槽、１０は蒸圧蒸発缶、１３
はタンクを夫々表す。
１：１：
特許出願人
徳山１違株式会社FIG. 1 is a diagram showing an example of the process of the present invention. In the figure, 1 indicates a metal processing process, and 2 indicates a reservoir for oils and fats used during metal processing. 3 is a solvent cleaning device, -54 is a cleaning tank, 5 is an object to be cleaned, 8 is a steam tank, 10 is a steam pressure evaporator, 13
represent tanks, respectively. 1:1: Patent Applicant Tokuyama Ichiban Co., Ltd.
Claims (3)
剤洗浄により溶屏除去し、該油脂を含有する溶剤を蒸溜
することこより溶剤を回収し、こ几を溶剤洗浄に供丁と
共に、蒸溜残分は、これに新たな油脂を禰充した後、上
記加工工描に再使用することを特徴とする金属類のｍ工
油詣類の回収、再使用方法。(1) The oils and fats that adhere to metals during J-working are removed by washing with an organic solvent, and the solvent containing the oils and fats is distilled to recover the solvent. A method for collecting and reusing industrial oils of metals, characterized in that the remaining material is reused for the above-mentioned processing after replenishing it with new oils and fats.
に屓次付して、溶剤を特徴とする特許請求の範囲第１項
記載の方法。(2) The method according to claim 1, wherein the solvent is obtained by subjecting a solvent containing oil and fat to subsequent distillation at normal pressure and distillation at reduced pressure.
溶剤を分離する４許請求の範囲第１項記載の方法、(3) the method according to claim 1, in which the solvent is separated until the solvent contained in the distillation residue is 5X or less;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57090515A JPS58207902A (en) | 1982-05-29 | 1982-05-29 | Recovery of oil adhered to metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57090515A JPS58207902A (en) | 1982-05-29 | 1982-05-29 | Recovery of oil adhered to metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58207902A true JPS58207902A (en) | 1983-12-03 |
| JPS645923B2 JPS645923B2 (en) | 1989-02-01 |
Family
ID=14000592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57090515A Granted JPS58207902A (en) | 1982-05-29 | 1982-05-29 | Recovery of oil adhered to metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58207902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5992115A (en) * | 1982-11-17 | 1984-05-28 | Tokuyama Soda Co Ltd | Cold drawing method of metallic pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462548U (en) * | 1977-10-12 | 1979-05-01 | ||
| JPS5741552A (en) * | 1980-08-25 | 1982-03-08 | Nippon Kakouki Kogyo Kk | Circulating refrigeration system of solvent degreasing washer |
-
1982
- 1982-05-29 JP JP57090515A patent/JPS58207902A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462548U (en) * | 1977-10-12 | 1979-05-01 | ||
| JPS5741552A (en) * | 1980-08-25 | 1982-03-08 | Nippon Kakouki Kogyo Kk | Circulating refrigeration system of solvent degreasing washer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5992115A (en) * | 1982-11-17 | 1984-05-28 | Tokuyama Soda Co Ltd | Cold drawing method of metallic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS645923B2 (en) | 1989-02-01 |
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