JP2000306444A - Continuous processing equipment for resin-coated wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To process, rapidly and simply, a resin-coated wired or a plastic-metal composite material, and to efficiently recover its component materials as recycled resources, fuels, and the like. SOLUTION: In this continuous processing equipment, a resin-coated wire to be processed is continuously supplied as a continuous body and continuously processed while it moves. This device has a means 1 for continuously supplying, as a continuous body, the resin-coated wire to be processed, a heating means 2 for heat-treating the resin-coated wire supplied by the means 1 and thermally decomposing the coating resin of the resin-coated wire into an easily peelable coating, a peeling means 3 for peeling the coating from the resin-coated wire after the heat-treatment by the heating means 2, and a winding means 4 for winding up the wire after the coating is peeled/removed from the wire. The wire and the coating peeled/removed from the wire can be separately recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a resin-coated wire (particularly, a plastic-metal (or inorganic material) composite).
The present invention relates to a continuous treatment facility capable of treating resin-coated wire (waste) and recovering its constituent materials as recycled resources, fuel, and the like.

[0002]

2. Description of the Related Art Resin-coated wires used for electric wires and the like are made by coating a wire such as a copper wire or a glass fiber with a resin such as vinyl chloride or polyethylene. After the coating material (resin) is separated from the wire by mechanical pulverization, the coating material and the wire (copper, aluminum, glass fiber, etc.) are separated and collected by wind separation or specific gravity separation.

[0003]

However, it is difficult to reuse the coated material that has been separated as described above because the crushed material of the wire generated during the pulverization is mixed in. The coated material is discarded. The fact was that they had to be disposed of.
Attempts such as freezing and pulverization have also been made to improve the efficiency of separation between the coating material and the wire rod, but this method cannot fundamentally solve the above-mentioned problem.

On the other hand, Japanese Patent Application Laid-Open No. Hei 9-229341 discloses an apparatus for thermally decomposing polymer waste containing a large amount of vinyl chloride. A pyrolysis apparatus comprising a pyrolysis furnace having a specific structure and gas recovery means for recovering a dry distillation gas generated during the treatment of polymer waste in the pyrolysis furnace has been proposed. I have.

However, the processing apparatus disclosed in Japanese Patent Application Laid-Open No. 9-229341 is an apparatus for batch processing, and has a problem in thermal efficiency inside a pyrolysis furnace. There is a problem that the resin is excessively thermally decomposed and a large amount of tar is generated. Accordingly, it is an object of the present invention to provide a resin-coated wire that can quickly and simply process a resin-coated wire that is a plastic-metal (or inorganic material) composite material and that can efficiently recover its constituent materials as recycled resources or fuel. An object of the present invention is to provide a continuous processing facility for wire rods.

[0006]

Means for Solving the Problems The continuous processing equipment for resin-coated wires according to the present invention for solving such problems is provided by:
It has the following features. [1] Continuous processing equipment that continuously supplies a resin-coated wire to be treated as a continuous body and performs continuous processing during its movement. It continuously supplies a resin-coated wire to be treated as a continuous body. Heating means for heating the resin-coated wire supplied by the means, and thermally decomposing the coating resin of the resin-coated wire to form an easily peelable coating; and after heating by the heating means. A stripping means for peeling off the coating of the resin-coated wire from the wire, and a winding means for winding up the wire after the coating has been peeled off by the stripping means. .

[2] Cutting and / or cutting the resin-coated wire to be treated
Processing means for crushing and processing, and cutting or /
Heating the crushed resin-coated wire and heating means for thermally decomposing the coating resin of the resin-coated wire to form an easily peelable coating, and the resin-coated wire after being heated by the heating means. A continuous processing equipment for resin-coated wires, comprising: a separating means for separating the coating from the wire; and a separating means for separating the separated coating and the wire.

[3] The resin coating according to the above [1] or [2], further comprising gas treatment means for recovering or neutralizing chlorine in exhaust gas discharged from the heating means. Continuous processing equipment for wire rods. [4] The continuous processing equipment according to [1] or [2], further comprising a gas processing unit configured to process exhaust gas discharged from the heating unit,
The gas treatment means is a gas combustion means for burning a combustible gas in the exhaust gas generated by the heat treatment of the resin-coated wire,
Gas treatment means for recovering or neutralizing chlorine in exhaust gas having undergone a combustion step by the gas combustion means, and a gas treatment means for continuously treating resin-coated wire rods.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the apparatus of the present invention, in which a resin-coated wire to be treated is continuously supplied as a continuous body, and continuous processing is performed during the movement. It is a continuous processing facility. In the figure, 1 is a continuous supply device (supplying means) for a resin-coated wire, 2 is a heat treatment device (heating means) for a resin-coated wire, and 3 is a device for peeling off the heat-treated resin-coated wire from the wire. Device (peeling means), 4 is a winding device (winding device) for the wire rod from which the coating resin has been peeled off, and 5 is an exhaust gas treatment facility for detoxifying the exhaust gas discharged from the heat treatment device 2. (Gas processing means).

The continuous supply device 1 is a device for continuously supplying a resin-coated wire to be treated in a continuous state.
For example, it is configured by a payoff reel (rewinding device) in which a resin-coated wire is wound around a drum in a coil shape. The heat treatment device 2 heats the resin-coated wire continuously supplied from the continuous supply device 1 and thermally decomposes (usually partially thermally decomposes) the coating resin of the resin-coated wire to form an easily peelable coating material (resin). For thermal decomposition residue)
For example, it is configured by an indirect heating type gas heating device or the like. When the coating resin is a chlorine-containing resin such as vinyl chloride, the chlorine content in the resin is desorbed as hydrogen chloride gas by heating the heat treatment device 2.

The peeling device 3 mechanically peels and removes the coating resin (easily peelable coating) of the resin-coated wire that has been heat-treated (heat-cooled) in the heat treatment device 2 from the wire body. It is a device for. The predominant coating resin used for electric wires and the like is a vinyl chloride resin, and the vinyl chloride resin undergoes a dechlorination reaction with heating, and the dechlorinated resin becomes a foamed solid coating. This coating can be easily separated from the wire rod body by giving a simple impact. Therefore, the peeling device 3 is provided by a crushing device that crushes (or crushes) only the coating by applying a simple impact, such as a so-called hammer mill or a crushing roller having an uneven surface, a metal brush or a scraper. It can be constituted by an appropriate device such as a scraping device for scraping off the coating.

The winding device 4 is a device for continuously winding a wire from which a coating resin has been peeled and removed, and is, for example, a tension reel for winding the wire into a coil around a drum.

The exhaust gas treatment equipment 5 is a device for treating the exhaust gas from the heat treatment device 2 containing the gas generated by heating the resin-coated wire rod and rendering it harmless. In many cases, the coating resin of the resin-coated wire is a chlorine-containing resin (such as a vinyl chloride resin). In this case, the gas generated by heating contains hydrogen chloride along with hydrocarbons such as tar generated by thermal decomposition of the resin. It is included. Therefore, normally, the exhaust gas treatment equipment 5 includes a combustion device for burning combustible gas (hydrocarbons such as tar components) in the exhaust gas and a gas treatment device for collecting or neutralizing the hydrogen chloride in the exhaust gas. It is preferable to provide a facility configuration including

For example, in such an equipment configuration, a combustion device (gas combustion) that introduces exhaust gas discharged from the heat treatment device 2 and burns combustible gas (hydrocarbons such as tar) contained in the gas. Means) and a gas processing apparatus (gas processing means) for recovering or neutralizing hydrogen chloride in exhaust gas discharged from the combustion apparatus. In this gas treatment apparatus, hydrogen chloride in exhaust gas is absorbed by water and recovered as hydrochloric acid, or hydrogen chloride in exhaust gas is neutralized with an aqueous alkali solution. When the amount of hydrocarbons such as tar contained in the exhaust gas is small, it is not necessary to provide a combustion device in the exhaust gas treatment equipment 5.

According to the above-described equipment, the resin-coated wire continuously supplied as a continuous body from the continuous supply device 1 is guided to the heat treatment device 2 while being transferred by bridle rolls or the like. Thermally decomposes at least to the extent that the coating resin can be easily stripped and removed (for example, stripping with a crusher), and when the coating resin is a chlorine-containing resin, most of the chlorine in the resin is desorbed as hydrogen chloride gas The heat treatment is performed under such conditions (heating temperature and processing time).

The resin-coated wire continuously heat-treated as described above is guided to the peeling device 3 as it is, and the coating material (residue of thermal decomposition of the coated resin) which has become easily peelable is mechanically peeled and removed. Thereafter, the wire rod body is wound into a coil shape by the winding device 4. Therefore, the wire is finally recovered in a coil-like form advantageous for reuse. On the other hand, the coating material peeled and removed from the wire is recovered by a suitable recovery means, and is reused as a furnace fuel or a reducing agent if necessary.

Exhaust gas (exhaust gas containing gas generated by resin heating) discharged from the heat treatment apparatus 2 is treated in an exhaust gas treatment facility 5 to be rendered harmless. For example, in an exhaust gas treatment facility provided with the combustion device and the gas treatment device described above, first, exhaust gas is introduced into the combustion device to burn combustible gas (hydrocarbons such as tar components) contained in the gas. After that, the mixture is introduced into a gas treatment device, and hydrogen chloride in the exhaust gas is recovered or neutralized.

FIG. 2 shows a second embodiment of the apparatus of the present invention, which is a continuous processing apparatus which performs processing after cutting or crushing a resin-coated wire to be processed. In the figure, 6 is a processing device (processing means) for cutting and / or crushing the resin-coated wire, 7 is a heating device (heating means) for the resin-coated wire, and 8 is coating of the resin-coated wire after the heat treatment. A separating device (separating means) for separating the object from the wire, a separating device (separating device) 9 for separating (separating) the separated coating material and the wire from each other, and a discharge device 10 for discharging from the heat treatment device 2 Exhaust gas treatment equipment (gas treatment means) for detoxifying exhaust gas.

The processing device 6 is a device for cutting and / or crushing a resin-coated wire to be processed into a length that can be supplied to the heat treatment device 7. For example, the resin-coated wire is rotated by a rotary blade or the like. It is composed of a crushing device for crushing. The heat treatment device 7 heats the crushed material and / or the cut material of the resin-coated wire supplied from the processing device 6 in a fixed amount, and easily decomposes (usually partially thermally decomposes) the coating resin of the resin-coated wire. This is an apparatus for forming a releasable coating (residue of thermal decomposition of resin), and is constituted by, for example, a rotary kiln. When the coating resin is a chlorine-containing resin such as vinyl chloride, the chlorine in the resin is desorbed as hydrogen chloride gas by heating the heat treatment device 7.

The peeling device 8 mechanically peels and removes the coating resin (easily peelable coating) of the resin-coated wire that has been heat-treated (heat-cooled) in the heat treatment device 7 from the wire body. It is a device for. As described above, vinyl chloride resin, which is the mainstream of resin for covering electric wires and the like, undergoes a dechlorination reaction with heating, and the resin after dechlorination becomes a foamed solid coating. This coating can be easily separated from the wire rod body by giving a simple impact.
Therefore, the peeling device 8 is constituted by an appropriate device such as a so-called hammer mill or a crushing device that crushes (or crushes) only the coating by applying a simple impact, such as a crushing roller having irregularities on the surface. can do.

The separating device 9 is a device for separating (separating) the coating material and the wire separated from each other as described above. For example, a wind separator for separating substances having different specific gravities and bulk densities by wind power. Such as a dry separation apparatus, a wet separation apparatus in which a substance is put into a liquid, and a separation is performed based on a difference in specific gravity. Since the specific gravity and the bulk density are remarkably different between the coating resin and the wire, both of the dry separation apparatus and the wet separation apparatus can appropriately separate (separate) them.
The exhaust gas treatment equipment 10 processes the exhaust gas from the heat treatment device 7 including the gas generated by heating the resin-coated wire,
This is a device for rendering this harmless, and its equipment configuration is the same as that of the embodiment shown in FIG.

According to the equipment having the above-described configuration, the resin-coated wire to be treated is first charged into the processing device 6 and then supplied to the heat treatment device 7 in a length (for example, several tens mm).
Below) and / or crushing treatment. The resin-coated wire thus processed is loaded into the heat treatment device 7 via an appropriate quantitative supply device, where at least the coating resin can be easily peeled off (for example, peeled off by a crusher). When the coating resin is a chlorine-containing resin, heat treatment is performed under such conditions (heating temperature and processing time) that most of the chlorine in the resin is desorbed as hydrogen chloride gas.

The resin-coated wire thus heat-treated is supplied to a peeling device 8, where the easily peelable coating material (residue of thermal decomposition of the coated resin) is mechanically peeled and removed.
Next, the separated coating material and the wire that are supplied to the separation device 9 are separated (separated) from each other, and are separately collected by appropriate collection means. The recovered coating is reused as a furnace fuel or a reducing agent if necessary. Also,
Exhaust gas (exhaust gas containing gas generated by resin heating) discharged from the heat treatment device 7 is treated and rendered harmless by the exhaust gas treatment facility 10 as in the embodiment of FIG. 1 described above.

When a rotary kiln is used as the heat treatment device 7 in this embodiment, the resin-coated wire is efficiently heated and the resin-coated wire is prevented from adhering to the inner wall of the rotary kiln. It is preferable to supply a solid heat carrier (powder or granule) together with the resin-coated wire that is the material to be processed. Also, in order to prevent segregation of this solid heat medium and enhance its function,
It is preferable to use a solid heat medium having a bulk density similar to that of the resin-coated wire rod, and in that respect, coke breeze is most preferable.

The type of the heat treatment devices 2 and 7 in the embodiment shown in FIGS. 1 and 2 is arbitrary, and the dechlorination reaction (thermal decomposition reaction) of a chlorine-containing resin such as a vinyl chloride resin is sufficiently advanced. On the other hand, the heating temperature (usually 250
To 350 ° C.), and any type of apparatus can be used as long as it can keep the material to be treated at the heating temperature for a time required (typically, 20 to 30 minutes). Further, as the heat treatment devices 2 and 7, those which can heat the resin-coated wire in a non-oxidizing gas atmosphere in order to prevent combustion of the resin inside the device are particularly preferable. A rotary kiln is preferable as the heat treatment apparatus that satisfies the above conditions, particularly a heat treatment apparatus that heat-treats a cut or crushed product of a resin-coated wire, and among them, a rotary kiln of an indirect heating method as described later is most preferable. .

When the heat treatment devices 2 and 7 are heating devices utilizing gas heating, the heating method is preferably an indirect heating method in which the heating gas is not brought into contact with the material to be treated. This is because, in the direct heating method in which the heating gas is brought into contact with the material to be treated, the heating gas is included in the exhaust gas discharged from the heat treatment devices 2 and 7, and a large amount of exhaust gas is generated. Alternatively, it is necessary to increase the size of the exhaust gas treatment devices 5 and 10 for the neutralization treatment in accordance with the amount of the exhaust gas.

Therefore, when the heat treatment device (especially, the heat treatment device 7) is constituted by a rotary kiln, the rotary kiln 11 of the indirect heating (external heat) type as shown in FIGS. An outer cylinder 13 is provided.
It is preferable that the space between them is formed as a heating gas passage b. In the rotary kiln having such a structure, usually, the inner cylinder 12 rotates with respect to the outer cylinder 13, and the heating gas flowing in the heating gas passage b is transferred in the longitudinal direction in the processing target material passage a. The material to be processed is heated through the tube wall of the inner cylinder 12.

Next, a more specific embodiment of the continuous processing equipment of the present invention will be described. FIG. 5 shows a more specific embodiment of the equipment type shown in FIG. 1, in which a payoff reel 14 is used as a continuous supply device of a resin-coated wire, and a rotary kiln 11 of an indirect heating method is used as a heat treatment device for a resin-coated wire. The crusher 15 (for example, a hammer mill) is used as a peeling device for peeling off the coated material of the resin-coated wire after the heat treatment, the tension reel 16 is used as a wire winding device, and the heat treatment device is used. Scrubbers 17 are provided as exhaust gas treatment facilities for detoxifying the exhaust gas, respectively.

The rotary kiln 11 is an indirect heating type kiln having an inner cylinder 12 and an outer cylinder 13 having a structure similar to that shown in FIGS. The space between the cylinder 12 and the outer cylinder 13 is defined as a heating gas passage b. In this kiln, the inner cylinder 12 is configured to rotate with respect to the outer cylinder 13, and the both ends thereof are provided with an inlet seal chamber 18a and an outlet seal chamber 18b, respectively. An inlet 120 at one end of the passage a) is rotatably connected to the inlet seal chamber 18a, and an outlet 121 at the other end is rotatably connected to the outlet seal chamber 18b. The entrance seal chamber 18a and the exit seal chamber 18b are provided with through holes (not shown) for passing the resin-coated wire X or the wire x, respectively.

Further, an outer cylinder 13 is provided in the heating gas passage b.
A heating gas is supplied from a gas supply port 130 provided at one end of the outer cylinder 13, and the heating gas is exhausted from a gas exhaust port 131 provided at the other end of the outer cylinder 13. In this embodiment, the rotary kiln 11 is used as a heat treatment device for the resin-coated wire. However, when a continuous body of the resin-coated wire is continuously processed as in the present embodiment, the kiln does not need to rotate, and A fixed rotation heating kiln may be used.

The crusher 15 is provided with the outlet seal chamber 18.
b. As the crusher 15, for example, a hammer mill as described above, a crushing roller having an uneven surface, or the like can be used. The payoff reel 14 is disposed on the side of the entrance seal chamber 18a of the rotary kiln 11 and the tension reel 16
Is disposed on the outlet side seal chamber 18b side of the rotary kiln 11. Therefore, the resin-coated wire unwound from the pay-off reel 14 passes through the entrance-side seal chamber 18a, and then enters the processing material passage a of the rotary kiln 11 from the entrance portion 120, passes through this passage, and exits through the exit portion. After entering the outlet side seal chamber 18b from 121, the coating material is peeled and removed by the crusher 15 and then exits the outlet side seal chamber 18b and is wound on the tension reel 16.

Further, on the exit side of the pay-off reel 14, the inside of the entrance-side seal chamber 18a and the entrance side of the tension reel 16,
Bridle rolls 19 are disposed, and the bridle rolls 19 continuously transport the resin-coated wire X and the wire x from which the coating is removed. The lower part of the outlet side seal chamber 18b is formed in a hopper shape for storing the coating material peeled off from the wire, and a lower end thereof is provided with a discharge port 180 for discharging the coating material.
A passage a for a material to be processed is provided above the outlet side seal chamber 18b.
A gas exhaust port 181 is provided for discharging gas (exhaust gas including gas generated by thermal decomposition of the coating resin) therein.

The scrubber 17 cleans the exhaust gas discharged from the material passage a of the rotary kiln 11, and recovers or neutralizes hydrogen chloride contained in the exhaust gas as hydrochloric acid. In the other drawings, reference numeral 20 denotes a hot air generator, 21 denotes a heat exchanger, 22 denotes a blower, and 23 denotes a chimney for radiating atmospheric air.

The heating gas (hot air) generated by the hot air generator 20 is supplied to the gas supply port 130 of the rotary kiln 11.
Supplied to In addition, the heating gas that has flowed out of the gas exhaust port 131 of the rotary kiln 11 passes through the heat exchanger 21 and
The air is returned to the hot air generator 20 or is emitted to the atmosphere through the chimney 23. Nitrogen gas is supplied to the heat exchanger 21, where it is preheated by heat exchange with the heating gas, and then supplied as a carrier gas from the inlet 120 of the rotary kiln 11 into the passage a for the material to be treated.

When, for example, a waste vinyl chloride coated wire as a resin coated wire is treated by the equipment shown in FIG. 5, the resin coated wire X wound in a coil shape on the payoff reel 14 is continuously supplied by bridle rolls 19, The inlet section 120 of the rotary kiln 11 passes through the inlet side seal chamber 18a.
From the inside (passage for material to be treated a). In the rotary kiln 11, the heating gas generated by the hot air generator 20 is introduced into the heating gas passage b from the gas supply port 130, and the ambient temperature in the material passage a becomes a predetermined temperature (normally 250 to 350 ° C.). The inner tube 12 is heated so that

The nitrogen gas preheated by the heat exchanger 21 is introduced as a carrier gas from the inlet portion 120 into the passage a for the material to be treated. Atmosphere. This carrier gas also plays a role of smoothly discharging the generated gas generated by heating the resin-coated wire to the outside of the material passage a. The resin-coated wire X guided into the passage a for the material to be treated is
The atmosphere in the passageway is usually heated to a temperature of about 250 to 350 ° C., whereby the coating resin is thermally decomposed into an easily peelable coating, and most of the chlorine in the resin is desorbed as hydrogen chloride gas. I do.

The resin-coated wire X led out of the outlet 121 of the passage a for processing material passes through the crusher 15 in the outlet-side sealing chamber 18b, so that a coating (residue of thermal decomposition of the coating resin) is removed. The wire material x is mechanically peeled and removed, and only the wire x passes through the outlet-side seal chamber 18b and is wound into a coil by the tension reel 16. On the other hand, the coating material peeled and removed from the wire rod by the crusher 15 falls to the lower part of the outlet side sealing chamber 18b, and is appropriately taken out from the outlet 180. Exhaust gas (exhaust gas including gas generated by resin heating) discharged from the material passage a into the outlet-side seal chamber 18b is guided to the scrubber 17 from the gas exhaust port 181 and is discharged into the exhaust gas by the scrubber 17. After the chlorine content is removed (recovered or neutralized as hydrochloric acid), it is released from the chimney 23 to the atmosphere.

FIG. 6 shows a more specific embodiment of the equipment type shown in FIG. 2, in which a crushing machine 24 is used as a processing device for cutting and / or crushing the resin-coated wire rod. The rotary kiln 11 of the indirect heating system is used as a device, and the crusher 25 is used as a peeling device for peeling off the coating of the resin-coated wire after the heat treatment from the wire.
However, a separator 26 such as a wind separator is used as a separation device for separating (separating) the stripped coating and the wire rod, and a scrubber 17 is used as an exhaust gas treatment facility for detoxifying exhaust gas from the heat treatment device. Is provided.

The rotary kiln 11 is an indirect heating type kiln having an inner cylinder 12 and an outer cylinder 13. An inlet seal chamber 18 a and an outlet seal chamber 18 are provided at both ends of the inner cylinder 12.
It has the same structure as the equipment shown in FIG. 5 in the basic structure such as the point where b is provided. The crusher 24 is provided on the inlet side seal chamber 18a side of the rotary kiln 11, and the crusher 25 and the separator 2 are provided on the outlet side seal chamber 18b side of the rotary kiln 11.
6 are provided.

As the crusher 24, a crusher capable of crushing the resin-coated wire carried into the facility to a length (for example, 30 mm or less) that can be supplied to the rotary kiln 11 by the below-described quantitative supply device is used. As the crusher 25, for example, the above-described hammer mill, a crushing roller having unevenness on the surface, or the like can be used. The separator 26 is, for example, a dry separator such as a wind separator that separates substances having different specific gravities and bulk densities by wind power, a wet separator that inputs a substance into a liquid and performs separation based on a difference in specific gravity. Be composed.

A storage tank 27 for storing the resin-coated wire (material to be processed) crushed by the crusher 24 is provided between the crusher 24 and the inlet 120 of the material passage a.
And a fixed-quantity supply device 28 to which the material to be treated in the storage tank 27 is supplied via a conveyor 29. The constant-quantity supply device 28 is provided with a double damper 30 for receiving the material transferred to the transfer conveyor 29.
And a screw feeder 31 from which a material to be processed is cut out from the double damper 30.
The front end side extends through the side wall of the entrance-side seal chamber 18a to the entrance portion 120.

The lower part of the outlet side seal chamber 18b is
2 is configured in a hopper shape to store the heat-treated resin-coated wire discharged from the outlet 121,
A discharge port 180a for discharging the treated resin-coated wire is provided at the lower end thereof. Also, the outlet side seal chamber 18
5B is provided with a gas exhaust port 181 at the top of FIG.
It is the same as the equipment shown in (1). The scrubber 17 is the same as the equipment shown in FIG. In addition, other configurations are the same as those of the equipment shown in FIG. 5, and the same reference numerals are given and detailed description is omitted.

When the waste vinyl chloride coated wire, which is a resin-coated wire, is treated by the equipment shown in FIG. 6, for example, the resin-coated wire carried into the equipment is first treated by a crusher 24 to an appropriate length (for example, 30mm or less)
After this is once stored in the storage tank 27, the transport conveyor 29
And feeds it to the quantitative supply device 28 via the double damper 30, and further supplies the quantitative supply from the quantitative supply device 28 to the inlet 120 of the passage a for the material to be treated. In the rotary kiln 11, the heating gas generated by the hot-air generator 20 is introduced into the heating gas passage b from the gas supply port 130, and the temperature of the atmosphere in the passage a for the material to be treated becomes a predetermined temperature (usually 25
(0-350 ° C.).

The nitrogen gas preheated by the heat exchanger 21 is introduced as a carrier gas from the inlet portion 120 into the passage a for the material to be treated, and this carrier gas causes the passage a for the material to be treated to be inert gas. Atmosphere. This carrier gas also plays a role of smoothly discharging the generated gas generated by heating the resin-coated wire to the outside of the material passage a.

The resin-coated wire supplied into the passage a for material to be treated is usually transferred to the outlet 121 through the longitudinal direction of the rotating inner cylinder 12 toward the outlet 121, and is usually 250 to 250 mm depending on the atmosphere in the passage.
The coating resin is heated to a temperature of about 350 ° C., whereby the coating resin is thermally decomposed into an easily peelable coating, and most of the chlorine in the resin is desorbed as hydrogen chloride gas. The transfer speed of the resin-coated wire is selected by adjusting the number of rotations of the kiln so that the required residence time (for example, about 20 to 30 minutes) of the resin-coated wire is secured in the passage a for processing material. You.

The resin-coated wire transferred in the passage a for processing material is discharged from the outlet 121 to the outlet seal chamber 18b, and is appropriately taken out from the discharge port 180a at the lower end thereof, and is then released by an appropriate transport means. The coating material (the thermal decomposition residue of the coating resin) is mechanically peeled and removed from the wire rod. Next, the separated coating material and the wire are separated (separated) in the separator 26, and the coating material and the wire are separately collected.

Exhaust gas (exhaust gas containing gas generated by resin heating) discharged from the material passage a into the outlet-side seal chamber 18b flows from the gas exhaust port 181 to the scrubber 1.
After the chlorine contained in the exhaust gas is removed (recovered or neutralized as hydrochloric acid) by the scrubber 17, the chlorine is released from the chimney 23 to the atmosphere.

[0048]

As described above, according to the continuous processing apparatus of the present invention, a resin-coated wire, which is a plastic-metal (or inorganic material) composite material, can be processed quickly and easily, and its constituent materials can be recycled. And can be efficiently recovered as fuel or the like. In addition, for vinyl chloride-coated electric wires, which account for the majority of resin-coated electric wires, the chlorine content in the coated resin can be appropriately removed, so that not only wires but also resin materials that can be used as furnace fuel can be efficiently used. Can be recovered.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a continuous processing facility according to the present invention, which continuously processes a resin-coated wire as a continuous body.

FIG. 2 is an explanatory view showing one embodiment of a continuous processing facility according to the present invention, which performs a continuous processing by cutting or / and crushing a resin-coated wire rod.

FIG. 3 is a longitudinal sectional view showing one embodiment of a main body of a rotary kiln used as a heating means in the continuous processing equipment of the present invention.

FIG. 4 is a cross-sectional view of the rotary kiln main body shown in FIG.

FIG. 5 is an explanatory diagram showing a more specific embodiment of the equipment of FIG. 1;

FIG. 6 is an explanatory diagram showing a more specific embodiment of the equipment of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Continuous supply apparatus, 2 ... Heat processing apparatus, 3 ... Peeling apparatus,
4 ... winding device, 5 ... exhaust gas treatment equipment, 6 ... processing device, 7
... heat treatment device, 8 ... peeling device, 9 ... separation device, 10 ...
Exhaust gas treatment equipment, 11: rotary kiln, 12: inner cylinder, 13: outer cylinder, 14: payoff reel, 15: crusher, 16: tension reel, 17: scrubber, 18
a: entrance seal chamber, 18b: exit seal chamber, 19: bridle roll, 20: hot air generator, 21: heat exchanger, 2
2 Blower, 23 Chimney, 24 Crusher, 25 Crusher, 26 Sorter, 27 Storage tank, 28 Constant feeder, 29 Conveyor, 30 Double damper, 31 Screw feeder 120 ... entrance part, 121 ... exit part,
130: gas supply port, 131: gas exhaust port, 180, 1
80a: outlet, 181: gas outlet, a: passage for material to be treated, b: passage for heated gas

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tatsuro Ariyama 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. F-term (reference) 4D004 AA07 AB06 AC05 BA03 BA05 CA04 CA12 CA24 CA50 CB42 4F301 AA11 AA17 AC11 BA01 BA02 BA10 BA12 BA13 BA15 BA17 BA21 BA25 BD42 BD44 BD45 BE08 BE30 BE31 BF02 BF10 BF12 BF20

Claims (4)

[Claims] 1. A continuous processing equipment for continuously supplying a resin-coated wire to be treated as a continuous body and performing continuous processing during its movement, wherein the resin-coated wire to be treated is continuously supplied as a continuous body. And a heating means for heating the resin-coated wire supplied by the means to thermally decompose the coating resin of the resin-coated wire to form an easily peelable coating. Continuity of a resin-coated wire having a peeling means for peeling off the coated material of the resin-coated wire after the wire is removed, and a winding means for winding up the wire after the coating is peeled and removed by the peeling means. Processing equipment. 2. A processing means for cutting or / and crushing a resin-coated wire to be treated, and a heat treatment for the resin-coated wire cut or / and crushed by the processing means, thereby forming a coating resin on the resin-coated wire. A heating means for thermally decomposing the coating material into an easily peelable coating, a peeling means for peeling off the coating of the resin-coated wire after the heat treatment by the heating means from the wire, and the peeled coating and the wire. A continuous treatment facility for resin-coated wire rods, comprising a separation means for separating the wire rod. 3. The continuous processing equipment for resin-coated wire according to claim 1, further comprising gas processing means for recovering or neutralizing chlorine in exhaust gas discharged from the heating means. 4. A gas processing means for processing the exhaust gas discharged from the heating means, the gas processing means comprising: a gas combustion means for burning a combustible gas in the exhaust gas generated by the heat treatment of the resin-coated wire rod; 3. A gas processing means for recovering or neutralizing a chlorine content in an exhaust gas having undergone a combustion step by the gas combustion means.
4. A continuous processing equipment for resin-coated wire according to the above.