JP5710873B2 - Cable handling method - Google Patents
Cable handling method Download PDFInfo
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- JP5710873B2 JP5710873B2 JP2009255038A JP2009255038A JP5710873B2 JP 5710873 B2 JP5710873 B2 JP 5710873B2 JP 2009255038 A JP2009255038 A JP 2009255038A JP 2009255038 A JP2009255038 A JP 2009255038A JP 5710873 B2 JP5710873 B2 JP 5710873B2
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- 238000000034 method Methods 0.000 title description 7
- 238000003672 processing method Methods 0.000 claims description 19
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 10
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 239000003921 oil Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000010949 copper Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 150000002013 dioxins Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
本発明は、ＯＦケーブル（油浸紙絶縁ケーブル）等の電線用ケーブルの廃棄及びリサイクル処理に用いられるケーブルの処理方法に関する。 The present invention relates to a cable processing method used for disposal and recycling processing of cables for electric wires such as OF cables (oil-immersed paper insulated cables).
ＯＦケーブル（油浸紙絶縁ケーブル）の一例として、図１に示すように、油通路となるメタルスパイラル１と、このメタルスパイラル１の外周には銅線等の導体２と、この導体２上にはカーボン紙を巻回してなる遮蔽層３が設けられ、この遮蔽層３上には油浸絶縁体４が設けられている。この油浸絶縁体４上には、銅、アルミニウム（Ａｌ）等のメタルテープを巻回してなる遮蔽層５が設けられる。この遮蔽層５上には鉛又はアルミニウム（Ａｌ）６が被覆され、更にポリ塩化ビニル、クロロプレンゴムなどからなる防食層７が設けられている。
前記メタルスパイラル１は、亜鉛メッキ鋼板からなる鋼帯をスパイラル状に巻き付け、波付け加工を施したパイプ状のものであって、その内部空間は絶縁油の通路となるようになっている。
前記導体２は、六分割圧縮中空撚線からなるもので、複数の銅線を撚り合せ、扇状に圧縮成形したユニットを６個上記メタルスパイラル１の外周に配置したものである。
前記油浸絶縁体４は、絶縁紙を巻回し、絶縁油を含浸してなるものである。
As an example of an OF cable (oil-immersed paper insulated cable), as shown in FIG. 1, a metal spiral 1 serving as an oil passage, a conductor 2 such as a copper wire on the outer periphery of the metal spiral 1, and a conductor 2 Is provided with a shielding layer 3 formed by winding carbon paper, and an oil immersion insulator 4 is provided on the shielding layer 3. On this oil-immersed insulator 4, a shielding layer 5 formed by winding a metal tape such as copper or aluminum (Al) is provided. On this shielding layer 5, lead or aluminum (Al) 6 is coated, and further, an anticorrosion layer 7 made of polyvinyl chloride, chloroprene rubber or the like is provided.
The metal spiral 1 has a pipe shape in which a steel strip made of a galvanized steel plate is wound in a spiral shape and subjected to a corrugation process, and its internal space serves as a passage for insulating oil.
The conductor 2 is composed of a six-division compressed hollow stranded wire, and is formed by arranging a plurality of units in which a plurality of copper wires are twisted and compression-molded in a fan shape on the outer periphery of the metal spiral 1.
The oil-immersed insulator 4 is formed by winding an insulating paper and impregnating the insulating oil.
このようなＯＦケーブルは、安全性を考慮して一定期間の経過により取り替えられている。そこで、取り替えられたＯＦケーブルの廃棄処理及びリサイクル処理が種々検討されている。例えば単なる焼却を行うだけでは、完全にケーブル内部まで焼却し難く、焼却を強めると金属部が脆くなるか、揮発するため金属材料の回収が困難になるという問題がある。 Such an OF cable is replaced after a certain period in consideration of safety. Therefore, various disposal processing and recycling processing of the replaced OF cable have been studied. For example, simply performing incineration makes it difficult to completely incinerate the inside of the cable, and if incineration is strengthened, there is a problem that the metal part becomes brittle or volatilizes, making it difficult to recover the metal material.
また、特許文献１には、含油絶縁紙を絶縁体とする廃棄ケーブルの切断片を反応容器内で水熱処理することにより、廃棄ケーブル中の有機物を分解するとともに、分解後のケーブル残渣から有価金属を回収する廃棄ケーブルのリサイクル処理方法が提案されている。しかし、この提案では、水熱処理を行うための設備投資が増大してしまうという課題がある。 Further, Patent Document 1 discloses that a waste piece of waste cable having an oil-impregnated insulating paper as an insulator is hydrothermally treated in a reaction vessel to decompose organic substances in the waste cable, and at the same time valuable metal from the decomposed cable residue. A recycling method for a waste cable that collects waste has been proposed. However, this proposal has a problem that capital investment for performing hydrothermal treatment increases.
したがって金属部品が歩留まりよく回収可能であり、作業負荷が少なく、焼却残物が無害であるケーブルの処理方法の速やかな提供が望まれているのが現状である。 Accordingly, there is a demand for prompt provision of a cable processing method in which metal parts can be collected with a high yield, the work load is small, and the incineration residue is harmless.
本発明は、従来における諸問題を解決し、以下の目的を達成することを課題とする。即ち、本発明は、金属部品が歩留まりよく回収可能であり、作業負荷が少なく、残物が無害であるケーブルの処理方法を提供することを目的とする。 An object of the present invention is to solve various problems in the prior art and achieve the following objects. That is, an object of the present invention is to provide a cable processing method in which metal parts can be recovered with a high yield, the work load is small, and the residue is harmless.
前記課題を解決するための手段としては以下の通りである。即ち、
＜１＞ 油分を含む絶縁体を有するケーブルを切断した切断ケーブル片を、焼却炉内の焼却室に略鉛直方向に立設させた状態で焼却することを特徴とするケーブルの処理方法である。
＜２＞ 複数本の切断ケーブル片を開放容器内に充填して焼却を行う前記＜１＞に記載のケーブルの処理方法である。
＜３＞ ５５０℃〜８５０℃の温度で１時間以上焼却する前記＜１＞から＜２＞のいずれかに記載のケーブルの処理方法である。
＜４＞ 酸化雰囲気下で焼却する前記＜１＞から＜３＞のいずれかに記載のケーブルの処理方法である。
＜５＞ ケーブルが、ＯＦケーブル（油浸紙絶縁ケーブル）である前記＜１＞から＜４＞のいずれかに記載のケーブルの処理方法である。
Means for solving the above problems are as follows. That is,
<1> A cable processing method, characterized in that a cut cable piece obtained by cutting a cable having an insulator containing oil is incinerated in a state of being erected in a substantially vertical direction in an incinerator in an incinerator.
<2> The cable processing method according to <1>, wherein a plurality of cut cable pieces are filled in an open container and incinerated.
<3> The cable processing method according to any one of <1> to <2>, wherein the incineration is performed at a temperature of 550 ° C. to 850 ° C. for 1 hour or more.
<4> The cable processing method according to any one of <1> to <3>, wherein the cable is incinerated under an oxidizing atmosphere.
<5> The cable processing method according to any one of <1> to <4>, wherein the cable is an OF cable (oil-immersed paper insulated cable).
本発明によると、従来における諸問題を解決することができ、金属部品が歩留まりよく回収可能であり、作業負荷が少なく、残物が無害であるケーブルの処理方法を提供することができる。 According to the present invention, it is possible to solve various problems in the prior art, and to provide a cable processing method in which metal parts can be recovered with a high yield, the workload is small, and the residue is harmless.
本発明のケーブルの処理方法は、油分を含む絶縁体を有するケーブルを切断した切断ケーブル片を、焼却炉内の焼却室に略鉛直方向に立設させた状態で焼却する。
ここで、略鉛直方向とは、焼却室の底面（水平面；容器の底面）に対して切断ケーブル片がほぼ９０度であることを意味し、９０度±１０度の範囲を含むことが好ましい。
前記ケーブルは、もともと剛性が低く、多少の柔軟性があるため直線性は弱く、鉛直に立てると自重により湾曲する。このため、ケーブルは、容器の底面に切断面を対向させるように設置し、容器内にてケーブル同士がもたれかかりながら配置される。前記ケーブルを容器内に複数本以上立設する方が設置に特別な治具を要さず簡便である。また、熱処理時における変形等にも、固定されていないため柔軟に応力を緩和でき、金属類の損耗や、燃え残りを防止できる。
According to the cable processing method of the present invention, a cut cable piece obtained by cutting a cable having an insulator containing oil is incinerated in a state where the cable piece is erected in a substantially vertical direction in an incinerator in an incinerator.
Here, the substantially vertical direction means that the cut cable piece is approximately 90 degrees with respect to the bottom surface (horizontal plane; bottom surface of the container) of the incineration chamber, and preferably includes a range of 90 degrees ± 10 degrees.
The cable is originally low in rigidity and has some flexibility, so the linearity is weak, and when it stands upright, it is bent by its own weight. For this reason, a cable is installed so that a cut surface may face the bottom face of a container, and it arrange | positions while cables lean against each other in a container. It is simple to install a plurality of cables in the container without requiring a special jig for installation. Further, since it is not fixed even during deformation during heat treatment, the stress can be relaxed flexibly, and metal wear and unburned residue can be prevented.
−ケーブル−
前記ケーブルとしては、使用されなくなった廃棄ケーブルが用いられる。
このようなケーブルとしては油分を含む絶縁体を有すれば特に制限はなく、目的に応じて適宜選択することができるが、例えばＯＦケーブル、ＳＬケーブル、Ｈケーブル等の油浸紙絶縁ケーブルなどが挙げられる。これらの中でも、ＯＦケーブルが特に好ましい。
前記ＯＦケーブルとしては、上述したように、図１に示すものなどが挙げられる。
-Cable-
A waste cable that is no longer used is used as the cable.
Such a cable is not particularly limited as long as it has an insulator containing oil, and can be appropriately selected according to the purpose. For example, an oil-impregnated paper insulation cable such as an OF cable, an SL cable, and an H cable Can be mentioned. Of these, OF cables are particularly preferred.
Examples of the OF cable include those shown in FIG. 1 as described above.
前記ケーブルは、所定の長さに切断した切断ケーブル片の形態で用いられる。前記ケーブルの切断は、断面が露出するようにケーブルの軸方向に垂直に切断する（輪切り切断する）。
前記切断ケーブル片の長さは、焼却炉内に略鉛直方向に立設可能であれば特に制限はなく、目的に応じて適宜選択することができるが、０．３ｍ〜１．０ｍが好ましく、０．７ｍが特に好ましい。
The cable is used in the form of a cut cable piece cut to a predetermined length. The cable is cut perpendicularly to the axial direction of the cable so that the cross section is exposed (cut into a ring).
The length of the cut cable piece is not particularly limited as long as it can be erected in a substantially vertical direction in the incinerator, and can be appropriately selected according to the purpose, preferably 0.3 m to 1.0 m, 0.7 m is particularly preferable.
−容器−
ケーブルを処理する際には、容器に入れる方がよい。前記容器は、焼却炉内にて熱等に耐える材質のものが好ましく、例えば鉄等がある。切断ケーブル片を立設する容器の形状は、上方が開放され、底面と側面が形成されケーブルを立設して貯留できる形状が適している。例として上方が開放されたスチールドラム缶などがある。上方が開放されていないと熱よる発生するガスが抜けずにケーブルに残留するためである。また、作業性からも上方から投入でき、投入状態を視認でき、修正しやすく優れている。
容器内にて切断ケーブル片を焼却処理すると、焼却時の熱により容器内の切断ケーブル片から油の気化ガスが発生し、充満される。ここで容器の上方が開放されているため、前記ガス等は容器内から流出される。容器内側（切断ケーブル片が立設された領域）は、炉内の雰囲気に係わらず前記ガス等で充満により極端な酸化雰囲気となることを避けられ、切断ケーブル片の金属類の酸化損失を抑制する。
容器内にて処理をすることで、金属回収が容器毎に効率良くできるので作業面、及び回収面で有意である。
-Container-
When handling cables, it is better to put them in a container. The container is preferably made of a material that can withstand heat in an incinerator, such as iron. As the shape of the container in which the cut cable piece is erected, a shape in which the upper part is opened, the bottom surface and the side surface are formed, and the cable can be erected and stored is suitable. An example is a steel drum that is open at the top. This is because the gas generated by heat does not escape and remains in the cable unless the upper part is opened. Also, from the viewpoint of workability, it can be thrown in from above, the throwing state can be visually confirmed, and it is easy to correct.
When the cut cable piece is incinerated in the container, the vaporized gas of oil is generated from the cut cable piece in the container and is filled with the heat at the time of incineration. Here, since the upper part of the container is opened, the gas and the like flow out from the container. The inside of the container (the area where the cutting cable piece is erected) can be prevented from becoming an extreme oxidizing atmosphere due to filling with the gas, etc., regardless of the atmosphere in the furnace, and the metal loss of the cutting cable piece is suppressed. To do.
By performing the treatment in the container, the metal can be efficiently recovered for each container, which is significant in terms of work and recovery.
前記切断ケーブル片は、焼却炉内の焼却室に略鉛直方向に立設させた状態で焼却される。
前記切断ケーブル片を、焼却炉内の焼却室に略鉛直方向に立設させる方法としては、特に制限はなく、目的に応じて適宜選択することができ、切断ケーブル片を１本ずつ略鉛直方向に立設配置してもよいが、複数本の切断ケーブル片を開放容器（例えばドラム缶）内に略鉛直方向に立設させて充填し、該ドラム缶ごと焼却炉内で焼却することが、安定性及び作業効率の点で特に好ましい。前記ドラム缶内に充填する切断ケーブル片の数は、ケーブル径、ドラム缶の大きさなどに応じて異なり一概には規定できないが、ケーブル径が１２０ｍｍの場合には１本〜１２本であることが好ましい。
例えば図３及び図４に示すように、ドラム缶１１内に１２本の切断ケーブル片１２（図３中左側）、又はドラム缶１１内に６本の切断ケーブル片１２（図３中右側）を鉛直方向に立設配置し、焼却炉内の焼却室１３で焼却することができる。図３及び図４中黒丸は温度測定位置を示す。
The cut cable piece is incinerated in a state of being erected in a substantially vertical direction in an incineration chamber in an incinerator.
There is no restriction | limiting in particular as a method of making the said cutting cable piece stand in a substantially vertical direction in the incinerator in an incinerator, According to the objective, it can select suitably, Each cutting cable piece is substantially vertical direction one by one However, it is stable that a plurality of cut cable pieces are filled in an open container (for example, a drum can) in a substantially vertical direction, and the drum can is incinerated in an incinerator. And particularly preferable in terms of work efficiency. The number of the cut cable pieces to be filled in the drum can differs depending on the cable diameter, the size of the drum can, etc., and cannot be defined unconditionally, but is preferably 1 to 12 when the cable diameter is 120 mm. .
For example, as shown in FIGS. 3 and 4, twelve cutting cable pieces 12 (left side in FIG. 3) in the drum can 11, or six cutting cable pieces 12 (right side in FIG. 3) in the drum can 11. Can be incinerated in the incinerator 13 in the incinerator. Black circles in FIGS. 3 and 4 indicate temperature measurement positions.
−焼却−
前記焼却に用いる焼却炉としては、特に制限はなく、目的に応じて適宜選択することができるが、例えば固定床炉、雰囲気炉などを用いることができる。
前記焼却は、５５０℃〜８５０℃の温度で１時間以上であることが好ましく、５５０℃〜８５０℃の温度で４時間〜８時間であることがより好ましい。前記焼却温度が、５５０℃未満であると、油分などの揮発が進まないことがあり、８５０℃を超えると、処理費の必要以上な増大を招来してしまうことがある。
前記焼却は、酸化雰囲気下で行うことが、焼却残物の量（質量、体積）が減量する点で好ましい。炉内の酸素濃度は１０％以上であることが好ましい。
-Incineration-
There is no restriction | limiting in particular as an incinerator used for the said incineration, Although it can select suitably according to the objective, For example, a fixed bed furnace, an atmospheric furnace, etc. can be used.
The incineration is preferably at a temperature of 550 ° C. to 850 ° C. for 1 hour or longer, more preferably at a temperature of 550 ° C. to 850 ° C. for 4 hours to 8 hours. When the incineration temperature is less than 550 ° C., volatilization of oil or the like may not proceed, and when it exceeds 850 ° C., the processing cost may increase more than necessary.
The incineration is preferably performed in an oxidizing atmosphere in terms of reducing the amount (mass, volume) of the incineration residue. The oxygen concentration in the furnace is preferably 10% or more.
前記焼却の際には排ガス処理を行うことにより、ダイオキシン類の発生を防止することができるので好ましい。前記排ガス処理としては、例えば電気集塵機、冷却塔、洗浄塔、煙突などが挙げられ、市販されている排ガス処理装置を用いることができる。 It is preferable to perform exhaust gas treatment at the time of incineration because generation of dioxins can be prevented. Examples of the exhaust gas treatment include an electric dust collector, a cooling tower, a cleaning tower, a chimney, and the like, and a commercially available exhaust gas treatment apparatus can be used.
ここで、図２は、ＯＦケーブルの処理方法の一例を示す工程図である。
まず、１本のＯＦケーブル（ケーブル径１２０ｍｍ）を長さ０．７ｍごとに輪切りに切断してケーブル切断片とする。
次に、このケーブル切断片をドラム缶内に鉛直方向に立設させて充填し、密閉して、ドラム缶を輸送し、その後ドラム缶を開封する。そして、ドラム缶ごと焼却炉（固定床炉）に投入後、バーナーにより昇温し、炉内が５５０℃〜８５０℃になってから４時間以上を保持する。この際、炉内へのエアー投入は極力少なくし、バーナーの油燃焼分のみを投入する。
次に、空気吹き込みの冷却後、ドラム缶を取り出す。以上により、ＯＦケーブルの処理を効率よく行うことができる。
Here, FIG. 2 is a process diagram showing an example of a method of processing the OF cable.
First, one OF cable (cable diameter 120 mm) is cut into round pieces every 0.7 m to obtain a cable cut piece.
Next, the cable cut piece is vertically installed in the drum can, filled, sealed, transported, and then the drum can is opened. And after putting into the incinerator (fixed bed furnace) with the drum can, it heats up with a burner and holds for 4 hours or more after the inside of a furnace becomes 550 to 850 degreeC. At this time, the input of air into the furnace is minimized and only the oil burner burner is input.
Next, after cooling by blowing air, the drum can is taken out. As described above, the OF cable can be processed efficiently.
本発明のケーブルの処理方法によれば、焼却残物は無害であり、該焼却残物から有用な各種材料をリサイクル可能である。例えばＯＦケーブルの各部材（導体（銅）、アルミニウム（Ａｌ）シース被覆、絶縁紙、ＰＶＣ）は人手で容易に分離可能であり、銅（Ｃｕ）及びアルミニウム（Ａｌ）は金属原料としてリサイクル可能である。また、絶縁紙については、完全に炭化しており、助燃剤としてリサイクル可能である。 According to the cable processing method of the present invention, the incineration residue is harmless, and various useful materials can be recycled from the incineration residue. For example, each member of the OF cable (conductor (copper), aluminum (Al) sheath coating, insulating paper, PVC) can be easily separated by hand, and copper (Cu) and aluminum (Al) can be recycled as a metal raw material. is there. Further, the insulating paper is completely carbonized and can be recycled as a combustion aid.
以下、本発明の実施例を説明するが、本発明は、これらの実施例に何ら限定されるものではない。 Examples of the present invention will be described below, but the present invention is not limited to these examples.
（実施例１）
１本のＯＦケーブル（ケーブル径１２０ｍｍ）を長さ０．７ｍごとに輪切りに切断したケーブル切断片を１２本ドラム缶内に充填したもの（以下、「フル」と称することもある）と、ケーブル切断片を６本ドラム缶内に充填したもの（以下、「ハーフ」と称することもある）とを用意した。ドラム缶内において各ケーブル切断片は、いずれも略鉛直方向（９０度±１０度）に立設して配置されていた。
次に、該２つのドラム缶を固定床炉（エコシステム秋田株式会社製）に投入後、Ａ重油バーナーにより昇温し、炉内が８５０℃になってから８時間温度を保持した。この際、炉内へのエアー投入は極力少なくし、バーナーの油燃焼分のみを投入した。
なお、この固定床炉の排ガスは、排ガス処理設備に接続されており、８５０℃以上で２秒以上の滞留時間で処理した。
処理後のドラム缶内には、ケーブルのアルミニウム（Ａｌ）シース被覆が溶融してドラム缶の底に溜まっていたが、容易に分離でき、回収のハンドリングが悪くなることはなかった。
Example 1
One OF cable (cable diameter 120mm) cut into round cuts every 0.7m in length and filled with 12 pieces of drums (hereinafter sometimes referred to as "full"), and cable cut A piece in which six drums were filled (hereinafter also referred to as “half”) was prepared. In the drum, each cable cut piece was arranged upright in a substantially vertical direction (90 ° ± 10 °).
Next, the two drums were put into a fixed-bed furnace (manufactured by Ecosystem Akita Co., Ltd.) and then heated with an A heavy oil burner, and the temperature was maintained for 8 hours after the inside of the furnace reached 850 ° C. At this time, the input of air into the furnace was reduced as much as possible, and only the oil burner burner was supplied.
The exhaust gas from the fixed bed furnace was connected to an exhaust gas treatment facility, and was treated at a temperature of 850 ° C. or more for a residence time of 2 seconds or more.
In the treated drum, the aluminum (Al) sheath coating of the cable was melted and accumulated at the bottom of the drum, but it could be easily separated and the handling of the collection was not deteriorated.
（実施例２）
実施例１において、炉内温度を５５０℃で４時間保持した以外は、実施例１と同様にして、焼却処理を行った。処理後のドラム缶内では、アルミニウム（Ａｌ）シース被覆が溶融せずに残存していた。
(Example 2)
In Example 1, incineration was performed in the same manner as in Example 1 except that the furnace temperature was maintained at 550 ° C. for 4 hours. In the drum after the treatment, the aluminum (Al) sheath coating remained without melting.
次に、処理後の各部材（導体（銅）、アルミニウム（Ａｌ）シース被覆、絶縁紙、ＰＶＣ）の残留油分、Ｃｌ濃度、及びダイオキシン類濃度を以下のようにして測定した。結果を表２に示す。 Next, the residual oil content, Cl concentration, and dioxin concentration of each member (conductor (copper), aluminum (Al) sheath coating, insulating paper, PVC) after the treatment were measured as follows. The results are shown in Table 2.
＜残留油分の測定＞
試料をｎ−ヘキサンで抽出後、ＧＣ−ＦＩＤ（ガスクロマトグラム−水素炎イオン化検出器）により測定した。
<Measurement of residual oil>
The sample was extracted with n-hexane and then measured by GC-FID (gas chromatogram-flame flame ionization detector).
＜Ｃｌ濃度の測定＞
試料をアルカリ溶解後、イオンクロマトグラフィーにて測定した。
<Measurement of Cl concentration>
The sample was dissolved in an alkali and then measured by ion chromatography.
＜ダイオキシン類濃度の測定＞
ガスクロマトグラフ質量分析計により、公定法により測定した。
<Measurement of dioxin concentration>
It was measured by an official method using a gas chromatograph mass spectrometer.
各部材は人手で容易に分離可能であり、銅（Ｃｕ）及びアルミニウム（Ａｌ）は金属原料としてリサイクル可能であった。絶縁紙については、完全に炭化しており、助燃剤としてリサイクル可能であった。
ＯＦケーブルではダイオキシン類の再合成が懸念されたが、０．０００２１ｎｇ−ＴＥＱ／ｇと非常に低く、ダイオキシンの再合成の心配はないことが証明された。また、ＯＦケーブルのＰＶＣ残渣（８５０℃でフル）のＣｌは、５５ｐｐｍ程度とラボ試験（２０％残留）に比べて、Ｃｌの揮発がかなり進んだため、再合成がほぼなかったと考えられる。
試験結果から、温度保持時間としては４時間程度で十分であり、ＯＦケーブルはドラム缶にフルに充填して処理可能であることが分かった。
Each member was easily separable by hand, and copper (Cu) and aluminum (Al) were recyclable as metal raw materials. The insulating paper was completely carbonized and could be recycled as a combustion aid.
In the OF cable, there was a concern about the resynthesis of dioxins, but it was very low at 0.00021ng-TEQ / g, and it was proved that there was no concern about the resynthesis of dioxins. In addition, Cl of the PVC residue (full at 850 ° C.) of the OF cable is considered to have hardly been re-synthesized because the volatilization of Cl was considerably advanced compared with the laboratory test (20% residue) at about 55 ppm.
From the test results, it was found that a temperature holding time of about 4 hours is sufficient, and the OF cable can be fully filled in a drum can and processed.
本発明のケーブルの処理方法は、金属部品が歩留まりよく回収可能であり、作業負荷が少なく、残物が無害であり、ＯＦケーブル等の電線用ケーブルのリサイクル処理に好適である。 The cable processing method of the present invention can recover metal parts with a high yield, has a low work load, is harmless to the residue, and is suitable for the recycling process of cables for electric wires such as OF cables.
１ メタルスパイラル
２ 導体
３ 第１の遮蔽層
４ 油浸絶縁体
５ 第２の遮蔽層
６ 鉛又はアルミニウム（Ａｌ）
７ 防食層
１１ ドラム缶
１２ ケーブル切断片
１３ 焼却炉
DESCRIPTION OF SYMBOLS 1 Metal spiral 2 Conductor 3 1st shielding layer 4 Oil-immersed insulator 5 2nd shielding layer 6 Lead or aluminum (Al)
7 Corrosion protection layer 11 Drum can 12 Cable cut piece 13 Incinerator
Claims (5)
前記開放容器内に、１２本の前記切断ケーブル片を略鉛直方向に立設させた状態で充填することを特徴とするケーブルの処理方法。 A cable processing method in which a cut cable piece obtained by cutting a cable having an insulator containing oil is filled in an open container, and the open container filled with the cut cable piece is incinerated in an incinerator in an incinerator,
12. The cable processing method , wherein the open container is filled with 12 pieces of the cut cable pieces standing in a substantially vertical direction.
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