KR20170096287A - Regeneration apparatus and method having excellent energy efficiency and productivity - Google Patents

Abstract

More particularly, the present invention relates to a waste plastic recycling apparatus and method which are excellent in energy efficiency and productivity, and more particularly, to a recycling apparatus and method for waste plastic recycling apparatus and method, A barrel capable of thermally dissolving the waste plastics by direct contact with the thermal oil and having a through hole through which the thermal oil can enter and exit from the side; c) And d) conveying means for conveying the undissolved waste plastic from the outlet of the barrel. The present invention also relates to an apparatus and a method for recycling waste plastics having excellent energy efficiency and productivity.
According to the present invention, the dissolution or decomposition of waste plastics is three times faster than in the prior art, and a large amount of waste plastics can be regenerated even with a small energy. In the mixed waste plastics, only desired plastics can be easily regenerated, And it is possible to carry out the transfer of the apparatus by a large amount of waste plastic production paper, which can greatly reduce the distribution cost, and it is easy to separate and regenerate the waste plastic and metal from the waste plastic in which the metal is bonded such as the substrate and the insert molding And it is possible to regenerate almost all the components from the waste plastic, thereby providing an innovative waste plastic recycling apparatus and method which can minimize environmental damage due to reclamation or incineration of the waste plastic.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste plastic recycling apparatus and a waste plastic recycling apparatus,

The present invention relates to a waste plastic recycling apparatus and method with excellent energy efficiency and productivity, and more particularly, to a waste plastic recycling apparatus and a waste plastic recycling apparatus which dissolve or decompose waste plastic three times faster than the prior art, It is possible to easily regenerate the desired plastic from the mixed waste plastic or to separate and recover the kind of the waste plastic, and it is possible to transfer the apparatus to a large amount of the waste plastic due to the transfer of the apparatus, thereby greatly reducing the logistics cost. It is easy to separate and regenerate the waste plastics and metals from the combined waste plastics. It can regenerate almost all the components from the waste plastics. It is an innovative waste plastics regenerating device that minimizes the environmental damage due to the incineration or incineration of waste plastics. Method and the like.

The disposal of waste plastics is one of the great social problems.

Currently, waste plastic processing methods include regeneration, incineration, and landfill.

However, reclamation of waste plastics causes not only fatal environmental pollution but also decaying. In many cases, it takes a period of several hundred years or longer. Incineration of waste plastics is a problem in which the environment is directly polluted by harmful gas generated during incineration have.

In addition, the regeneration of the waste plastic is limited, the quality may be deteriorated due to the residue of the unnecessary material, and the logistics ratio required for transporting the waste plastic, the electricity cost during the regeneration process, etc., There is a problem that the unit price is too high.

Korean Patent Laid-Open Publication No. 1998-0008496

In order to solve the problems of the prior art as described above, the present invention is characterized in that dissolution or decomposition of waste plastics is three times faster than in the prior art, and that a large amount of waste plastics can be regenerated even with a small energy, It is possible to easily reproduce plastic or to separate and recover by type, and it is possible to carry out a large amount of waste plastic due to the transfer of the device by the generation of waste plastics, and it is possible to save logistics cost greatly and waste plastics combined with metal such as substrate, insert molding, It is an object of the present invention to provide an innovative waste plastic recycling apparatus and method that can easily recycle and regenerate a metal and can regenerate almost all components from the waste plastic, thereby minimizing environmental damage due to reclamation or incineration of the waste plastic .

These and other objects of the present disclosure can be achieved by all of the present invention described below.

In order to achieve the above-mentioned object, the present invention provides a method of manufacturing a tub, comprising the steps of: a) a bath filled with a heating medium oil; b) a tub provided in the bath and capable of transferring internal material by a rotational force, A barrel having a through hole for thermally dissolving waste plastic by direct contact with the thermal oil, c) feeding means for feeding waste plastic to the barrel inlet, and d) And a transfer means for transferring the waste plastics which are not used in the waste plastics.

In addition, the present invention relates to a method of manufacturing a tub, comprising: a) a bath filled with a heating medium oil; b) a through hole provided inside the bath and capable of transferring internal material by a rotational force, A barrel for thermally dissolving the waste plastic by direct contact with the thermal oil, c) feeding means for feeding the waste plastics to the barrel inlet, d) means for feeding waste plastic not dissolving from the outlet of the barrel And e) recovery means for recovering molten waste plastic, which is thermally melted and discharged through the through holes of the barrel, from the lower portion of the bath, and a waste plastic recycling apparatus and method excellent in energy efficiency and productivity.

In addition, the present invention provides a waste plastic regeneration vehicle including a moving means and the waste plastic regeneration device provided above the moving means.

According to the present invention, the dissolution or decomposition of waste plastics is three times faster than in the prior art, and a large amount of waste plastics can be regenerated even with a small energy. In the mixed waste plastics, only desired plastics can be easily regenerated, And it is easy to transport the apparatus by a large amount of waste plastic production paper, so that the distribution cost can be largely saved and separation and regeneration of the waste plastic and metal can be easily performed in the waste plastic in which the metal is bonded such as the substrate and the insert molding product And it is possible to regenerate almost all the components from the waste plastic, thereby providing an innovative waste plastic recycling apparatus and method which can minimize environmental damage due to reclamation or incineration of the waste plastic.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing one embodiment of a waste plastic regeneration method according to the present invention; FIG.
2 is a cross-sectional view illustrating one embodiment of the waste plastic recycling apparatus according to the present invention.
3 is a cross-sectional view illustrating another embodiment of the waste plastic regeneration apparatus according to the present invention.
Fig. 4 is a cross-sectional view illustrating a preferred embodiment of the waste plastic recycling apparatus according to the present invention.

Hereinafter, the waste plastic regeneration apparatus and method and the waste plastic regeneration vehicle including the same will be described in detail.

The inventor of the present invention has found that when waste plastics are melted in direct contact with a high temperature thermal oil, it is possible to melt a large amount of waste plastics even with a small amount of energy even if the temperature distribution is uniform, and heat loss is prevented to a maximum due to heat storage characteristics of the heat oil. It is possible to maintain stable operation due to high thermal stability and to confirm that the thermal oil is freely separated during the solidification process of the molten recycled plastic and when the waste plastic is melted by using the net type barrel, It is possible to easily reproduce or separate and recover by type. In the waste plastics combined with metal such as substrates and insert molding products, it is easy to separate and regenerate waste plastic and metal, It is confirmed that there is almost no contamination, and Thereby completing the invention.

The waste plastic regenerating apparatus according to the present invention comprises: a) a bath filled with a heat medium oil; b) a through-hole through which the heat medium oil can enter and exit from the side, a barrel for thermally dissolving the waste plastic by direct contact with the thermal oil, c) supply means for supplying waste plastic to the barrel inlet, and d) And a transfer means for transferring the plastic.

As another example, the waste plastic recycling apparatus according to the present invention may include: a) a bath filled with a heat medium oil; b) a heat exchanger installed in the bath and capable of transferring internal material by a rotational force, C) a supply means for supplying the waste plastics to the barrel inlet; d) a supply means for supplying waste plastic from the outlet of the barrel, And e) recovery means for recovering molten waste plastic, which is thermally dissolved and discharged through the through holes of the barrel, from the lower portion of the bath.

As another example, the waste plastic regenerating apparatus according to the present invention may further include a heat medium oil recycling means for recycling the remaining heat medium oil recovered in the e) recovery means to the bass.

The material of the bass and the barrel is not particularly limited when it is a material thermally and chemically stable to thermal oil and molten plastic, and may be, for example, stainless steel.

The bass may be, for example, a hermetically sealed container, preferably a cylindrical hermetically sealed container.

The bass may be, for example, a bass having an inclined surface at the bottom so that the molten recycled plastic flowing through the through hole of the barrel can be gathered to one side.

The bass may be, for example, a molten plastic feed screw located at the bottom of the bass and capable of transferring the molten reclaimed plastic falling from the barrel to one side and a molten recycled plastic conveyed by the molten plastic feed screw, In this case, the size of the bath and the amount of the heat medium oil to be used can be greatly reduced, so that the energy to be used can be greatly reduced, and movement and installation are easy.

The bass may be covered or enclosed by double asbestos jackets, for example. In this case, the heat loss of the heat medium oil can be suppressed by the heat insulation effect, and the risk of fire can be reduced and the safety of the operator can be guaranteed.

The barrel capable of transferring the internal material by the b) may be, for example, a rotary barrel in which the barrel itself rotates about the conveying direction of the material, or a screw barrel including a screw in the barrel. In this case, Not only the transfer of the waste plastics but also the waste plastics can be brought into contact with the thermal oil evenly so that the waste plastics to be recovered are effectively melted and discharged without being left in the barrel.

The rotary barrel may further include a metal wing having a helical surface coupled to an inner surface of the rotary barrel so as to receive an urging force of an inner object in an exit direction during rotation. At this time, the barrel is connected to the driving motor and the gear, for example, and is rotated in the transport direction of the object.

The screw-type barrel can be subjected to a force that pushes the object inside the barrel toward the outlet by the rotation of the screw. At this time, the screw is connected to the driving motor and rotated, for example.

The through hole formed on the side of the barrel b) may be, for example, a circle having a diameter of 0.5 to 3.0 cm, 0.5 to 2.0 cm, or 0.5 to 1.5 cm, and within this range, the purity and productivity .

Preferably, the through hole is uniformly distributed over the entire side of the barrel so that the heating medium oil flows directly from the bath and the molten waste plastic can be easily discharged out of the barrel.

The metal blade of the rotary barrel may have a blade height of 2 to 10 cm, 2 to 5 cm, or 2 to 4 cm, for example. Within this range, energy efficiency and productivity are both excellent.

The outlet of the b) barrel can form a jaw, for example, in which the discharge of the waste plastics which is not melted is controlled, and thus the melting time of the waste plastics to be recovered is sufficiently secured.

The size, length and / or diameter of the barrel b) can be adjusted in consideration of the amount of waste plastics to be treated and the processing speed.

The c) waste plastic supply means is not particularly limited when it is a means capable of transferring the waste plastic to the barrel, and may include at least one kind selected from the group consisting of a supply pipe, a hopper and a supply device, Conveying rollers, conveyors, or the like sealed by piping. In this case, it is possible to prevent the outflow of gas, which may occur during melting or decomposition of waste plastic, to the outside.

The feeding device may be, for example, a conveying screw, a conveying roller, a conveyor, or the like.

The c) waste plastic supply means may be a combination of a supply device and a supply pipe, a supply pipe and a hopper, or a supply device, a supply pipe and a hopper, for example.

The d) waste plastics transferring means is not particularly limited insofar as it is a means for transferring waste plastic which is not melted from the barrel out of the bath. For example, it may be a transfer piping, a transferring device or a combination thereof, , Or a combination of a transfer pipe and a transfer device.

The conveying device may be, for example, a conveying screw, a conveying roller, a conveyor, or the like.

The d) waste plastics transporting means may be connected to a barrel of another waste plastic regenerator to re-supply the waste plastics which have not been melted.

As another example, the d) waste plastics conveying means may be connected to a pelletizer for pelletizing the waste plastic mass when the waste plastics passing through the barrel are in a semi-molten state and the molten waste plastics and the solid waste plastics are entangled And in this case the pellets produced can be used as waste plastic solid fuel products (RPE: Refused Plastic Puel).

The recovery means is not particularly limited insofar as it is a means capable of recovering the molten recycled plastic that has melted and passed through the through hole of the barrel and sinked in the lower portion of the bath from the bath. For example, the recovery pipe and / And may be a conveying device such as a conveying pump, a conveying screw, a conveying roller, a conveyor, or the like, which is preferably sealed by a pipe. The waste plastics melted in the barrel are pulled out like noodles through the through holes and are not melted or adhered or wetted in the heat medium oil, and e) when the molten material plastic is recovered by the recovery means, .

The e) recovery means may be, for example, a bottom portion at a point where the molten recycled plastic settled in the lower portion of the bath is hardened to some extent during transportation by the recovery means and can not pass through the net, that is, In this case, the recycled plastic is transported past the net, and the thermal oil is transferred to the bottom of the net through the circulation device or the circulation pipe. Recirculated.

For example, the recovering device may be installed such that the molten reclaimed plastic is fed upwardly. In this case, the heating oil separated by the net can be recycled to the bath through the circulation pipe without a separate device such as a pump or the like.

For example, the waste plastic recycling apparatus includes a pressurizing roller or extrusion die for uniformly pressing the completely unreinforced recycled plastic recovered by the recycling means, and a pelletizer for pelletizing the recycled plastic extruded or pressed therethrough, As shown in FIG.

The waste plastic regenerating apparatus further includes a grinder for cutting or crushing the waste plastics into a predetermined size, preferably 5 to 20 cm, 5 to 15 cm, or 5 to 10 cm in length, in front of the c) waste plastic supplying means can do. The pulverized waste plastic may be supplied to the barrel by the c) waste plastic supplying means.

As a specific example, the crusher may be connected directly to the supply pipe or the hopper, or may be connected to the supply device to supply waste plastic that has been cut or crushed.

The pulverizer is not particularly limited in the case of a device capable of cutting or pulverizing waste plastics.

The waste plastic regenerating apparatus may further include a condenser connected to the upper end of the bath for liquefying the gas generated during the melting process of the waste plastic, and a storage tank for storing the condensed liquid (oil) In this case, the condensed liquid can be used as an energy source, and is economical, and does not discharge or incinerate, thereby reducing environmental pollution.

The condenser may receive a gas generated in the bath through an exhaust pipe formed on the upper surface of the bath.

As another example, the waste plastic regenerating apparatus may further include a temperature sensor and a heating device so as to control the temperature of the heat medium oil.

The temperature sensing sensor may be installed in a bath, for example, and is not particularly limited in the case of a temperature sensing sensor which is stable in a high temperature heat medium oil.

The heating device is not particularly limited as long as it is a heating device capable of heating thermal oil. For example, the heating device may be a heating device using a burner or an electric heating device using a coil, and preferably a heating device using a burner , And more preferably a heating medium boiler.

The electric heating device using the coil can directly heat the heating oil in the bath by placing the coil in the bath, but it is more suitable for a small capacity waste plastic regenerating device considering the cost and heat transfer capacity, and the heating using the burner The apparatus, particularly the heating medium boiler, regulates the temperature of the heat medium oil in the bath by heating the heating medium circulating in the bath and the heating medium boiler, and can use cheap energy resources such as gas and regeneration oil, There is an effect suitable for the device.

The waste plastic recycling method according to the present invention comprises the steps of: a) a bath filled with a heat medium oil; b) a through hole provided in the bath and capable of transferring internal material by a rotational force, a barrel for thermally dissolving the waste plastic by direct contact with the thermal oil, c) supply means for supplying waste plastic to the barrel inlet, and d) And a transfer means for transferring the plastic.

The waste plastics recycling method of the present invention comprises the steps of: a) a bath filled with a heat medium oil; b) a through hole provided in the bath and capable of transferring internal material by a rotational force, a barrel for thermally dissolving the waste plastics by direct contact with the thermal oil having a through hole, c) supply means for supplying waste plastics to the barrel inlet, d) And a recovery means for recovering the molten waste plastic, which is heat-dissolved by the through hole of the barrel, and discharged from the lower portion of the bath, is used as the waste plastic recycling device.

The waste plastic regeneration apparatus used in the waste plastic regeneration method of the present invention may include all the contents of the waste plastic regeneration apparatus of the present invention described above.

The thermal oil may be filled in an amount of 20 to 70% by volume, 30 to 60% by volume, preferably 45 to 55% by volume of the barrel, and within this range, It can be sufficiently melted within a short period of time and completely recovered through the through hole on the side of the barrel.

The heating medium oil is not particularly limited when it is a heating medium which is thermally stable at a set temperature, that is, at a melting temperature of the waste plastic. For example, the heating medium may be uniquely sold on the market. Specific examples thereof include an organic heating medium, And diphenyl ether, or a shell permic oil.

The waste plastic regeneration method according to the present invention uses a high thermal conductivity of a heat medium oil to instantaneously heat the sealed heat medium oil, thereby achieving a low thermal loss and a high thermal efficiency at a low cost. By using the heat accumulation of the heat medium oil, And the high heat stability of the heating medium makes it possible to continuously supply high-quality energy.

The thermal oil may for example be regenerated, that is, maintained at the melting temperature of the waste plastic to be recovered, or may be maintained at a temperature of 10 to 20 DEG C or 5 to 15 DEG C lower than its decomposition temperature.

The waste plastic recycling method according to the present invention can include a plurality of waste plastic recycling apparatuses connected by a transferring means for transferring undissolved waste plastic. In this case, the mixed waste plastic can be quickly separated and regenerated by type, It has an effect of minimizing environmental pollution caused by waste plastics.

The plurality of waste plastic regenerating apparatuses may have a total of two or more, two to ten, two to five, or two to four waste plastic regenerators, for example. Within this range, productivity and economy It has excellent effect.

The plurality of waste plastic regenerating apparatuses may be a waste plastic regenerating apparatus in which waste plastic not dissolved in the barrel is placed second by the transfer means of the waste plastic regenerator (first waste plastic regenerator) And then the undissolved waste plastic is fed to the next waste plastic device and the last waste plastic recovery device recovers undissolved waste plastic or the plastic component is melted and / And the metals can be recovered.

In the plurality of waste plastic regenerators, for example, the temperature of the heat medium oil in each waste plastic regenerator may be set differently, and is preferably set to increase stepwise.

In the case of setting the temperature of the heat medium oil of each waste plastic regeneration device in the plurality of waste plastic regeneration apparatuses to increase stepwise, a specific example may be as follows:

a) a step of firstly melting and recovering waste plastic at a temperature of 100 ° C or higher and lower than 140 ° C; b) second melting and recovering the unheated waste plastic in the step a) at a temperature of 140 ° C or higher and lower than 190 ° C; c) thirdly melting and recovering the unheated waste plastic in the step b) at a temperature of not less than 190 ° C and less than 240 ° C; d) melting and recovering the unheated waste plastic at a temperature higher than 240 ° C and lower than 290 ° C in the step c); And e) a step of finally melting and / or decomposing undissolved waste plastics in the step d) at a temperature higher than 290 ° C (see FIG. 1)

As another example, the plurality of waste plastic regenerating apparatuses make the whole waste plastic into a lump of semi-molten state without collecting the molten waste plastic through the through hole of the barrel in the last waste plastic regenerating apparatus, (RPE: Refused Plastic Puel) by transferring the pellets to a pelletizer that forms the pellet.

The waste plastic solid fuel product may include, for example, fire-retardant or flame retardant plastic, wood, paper, and the like.

The waste plastic may be, for example, a waste thermoplastic resin or a waste rubber. The waste plastic may be a waste styrofoam, a waste tire, a waste insert molded product, a waste board or a waste paint. In this case, have.

The waste thermoplastic resin may be, for example, a polyethylene (PE) resin, a polypropylene (PP) resin, a polystyrene (PS) resin, a polyamide (PA) resin, a waste acrylonitrile butadiene Styrene resin, polycarbonate (PC) resin, polyvinyl chloride (PVC) resin, waste vinyl acetate resin, polyester resin such as PBT and PET, waste polyacetal resin, Vinyl chloride, and vinyl chloride.

The waste rubber may be, for example, waste synthetic rubber or waste natural rubber.

The waste plastic is discharged as ordinary industrial waste, municipal waste, rejects in factories, etc., and may be in the form of a film, a sheet, a molded product, or the like. The waste plastics raw material may contain a small amount of foreign substances such as water, dirt, paper, iron, glass, etc. so long as it does not interfere with the melting separation reaction. Further, a small amount of oil such as vegetable oil, mineral oil, waste lubricating oil and the like may be mixed into the waste plastic.

Hereinafter, the waste plastic recycling apparatus and method of the present invention will be described in detail with reference to Figs. 1 to 4. Fig.

FIG. 1 is a process diagram schematically showing one embodiment of the waste plastic regeneration method according to the present invention, in which a plurality of waste plastic regenerators are connected by a multistage temperature gradient, The gas recovered from the bottom is recovered from the top of each bath and collected into the condensate by the condenser.

In the last step, the thermal oil is kept at 290 ° C or higher so that the molten waste is melted and decomposed in the previous step, and the molten material is recovered from the lower part of the bath, the decomposed gas is recovered from the upper part and the remaining metals are recovered from the barrel .

The size and shape of the through holes of the barrel in the last stage can be adjusted so that the remaining metals do not escape.

As a specific example, a polyethylene (PE) resin having a relatively low melting point is melted and recovered in the first stage at a temperature of 100 ° C or more and less than 140 ° C by the multistage melt regeneration process, and at a temperature of 140 ° C or more and less than 190 ° C (PET) resin or polycarbonate (polyvinyl chloride) resin at a temperature of 190 占 폚 or more and less than 240 占 폚 in the third step, the polyvinyl chloride resin (Nylon) resin or a hard polyvinyl chloride resin is melted and recovered at a temperature of 240 DEG C or more and less than 290 DEG C in the fourth step. In addition, oil (broom oil) is obtained by cooling the gas discharged at the temperature of 290 ° C or more in the last step and the gas discharged in the previous step, or this gas is supplied continuously to the gas burner (heating device) By operating the burner, it can be recycled as its own heat source.

2 and 3 are cross-sectional views of an embodiment of a waste plastic regeneration apparatus according to the present invention, showing a bath 10 filled with thermal oil H, a barrel 20 having a through-hole 23, A waste plastic supplying means composed of a waste plastic 30 and a hopper 40, a temperature sensor 61 and a heat transfer device 60 for regulating the temperature of the heat medium oil, a recovery means 11 for recovering the molten recycled plastic from the bath, A recycling pipe 12 for recirculating the separated heat medium oil to the bath, and an exhaust pipe 50 for guiding the gas generated in the bath to the condenser. ).

The screw provided inside the barrel or barrel is rotated by the driving motor M and the substance inside the barrel is rotated by the metal blade having the helical surface attached to the inside of the barrel or the screw installed inside the barrel, To the outlet 22 of the barrel.

A hopper 40 is connected to the inlet of the barrel, and a transfer pipe is connected to the outlet of the barrel.

It is preferable that the heat medium oil H is filled to the extent that 20 to 70% by volume of the barrel 20 is filled.

The waste plastics charged by the supply device 30 are introduced into the barrel 20 via the hopper 40 and part or all of the waste plastics charged into the barrel are melted by contact with the high temperature thermal oil H, Through the through hole 23 formed in the bottom surface of the bath. The collected molten recycled plastic is recovered through the recycling means 11. The recycled molten recycled plastic is set in a lower portion 11a at a point where the molten recycled plastic is hardened adequately and can not pass through the net, And recycles it to the bath through the recirculation line 12.

The mesh may be, for example, a metal mesh, preferably a stainless mesh mesh, and is not particularly limited in size and shape when it is a mesh that allows slip through the recycled plastic and allows the heat medium oil to escape downward.

The unheated waste plastics conveyed from the outlet 22 of the barrel may be collected through a transfer line 24 or into a barrel of another waste plastic recycling apparatus set at a higher temperature.

The barrel of FIG. 2 is a rotary barrel 20, and the barrel 20 of FIG. 3 corresponds to a screw barrel.

4 is a cross-sectional view of a preferred embodiment of a waste plastic regenerator according to the present invention, showing a bath 10 filled with thermal oil H, a barrel 20 having a through-hole 23, 30, and a hopper 40, a temperature sensor 61 for sensing the temperature of the heat medium oil, a heat medium oil supply pipe 13a to which the heat medium oil heated from the heat medium boiler is supplied, a heat medium oil of the bass is supplied to the heat medium boiler A molten plastic feed screw 13 for feeding the molten recycled plastic away from the through hole of the barrel to one side of the lower part of the bath, and a molten recycled plastic conveyed to one side of the lower part of the bath by the molten plastic feed screw A collecting hopper 71 for collecting the molten recycled plastic from the bass, a collecting means 11 for collecting the molten recycled plastic from the bass, Shows the recycling line drain hole 12, and the waste plastic and reproducing apparatus (A) consists of an exhaust pipe 50 for guiding the gas generated in the bath as a condenser, etc. is recycled to the thermal oil separation and (11a) to the bath.

As described above, the waste plastic regenerating apparatus including the molten plastic conveying screw 70 and the collecting hopper 71 significantly reduces the size of the bath and the amount of the heat medium oil to be used, compared to a device for collecting the molten regenerated plastic only on the inclined surface of the lower portion of the bath The energy used for regeneration can be largely reduced, and it is easy to move and install.

Although not shown in FIGS. 2 to 4, the waste plastic supply apparatus 30 may further include a pulverizer for cutting or crushing the waste plastic into a predetermined size, preferably 5 to 20 cm in diameter or 5 to 20 cm in length and width .

Further, in Figs. 2 to 4, a transfer pump, a crusher, a conveying screw, a condenser, a compression roller, an extrusion die or a cutter, which are well known to those skilled in the art, are not shown.

The waste plastic regenerator system according to the present invention is characterized in that a plurality of waste plastic regenerators of the present invention are continuously connected by the combination of the conveying means 24 of the regenerating apparatus in front and the feeding means 30, .

The feeding means of the waste plastic regenerating device located at the front side and the feeding means of the waste plastic regenerating device located behind the feeding means may be integrally formed as one unit.

In addition, it is preferable that the waste plastic regenerating apparatus located behind the waste plastic regenerating apparatus has a higher bass temperature, that is, a higher temperature of the heat medium oil than the waste plastic regenerating apparatus disposed at the front. In this case, There is no need to recycle or recycle almost all kinds of waste plastics and metal residues that cause pollution by recycling and re-use, so there is no fear of causing environmental pollution.

The waste plastic regeneration vehicle according to the present invention is characterized in that it comprises a moving means and a waste plastic regeneration device of the present invention provided on the moving means.

The moving means is not particularly limited in the case of a moving means capable of loading or installing the waste plastic recycling apparatus of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments are merely illustrative of the present invention, and various changes and modifications can be made within the scope and spirit of the present invention. Are obvious to those skilled in the art, and it is obvious that such variations and modifications fall within the scope of the appended claims.

[Example]

A waste plastic regeneration system in which four waste plastic regenerating apparatuses as shown in FIG. 4 are continuously connected is prepared. At this time, the waste plastics supplying means of the second, third and fourth waste plastic regenerating apparatuses were modified to combine with the transferring means of the waste plastic regenerating apparatus described earlier, and the through-holes of the barrel were uniformed to a diameter of about 1 cm. Each bath was filled with about 40% of the barrel so that the heating medium was filled with shallow phermic oil (BPTRANSCAL.N, KSM2051.IS.PVG32, manufactured by Incheon Oil Co., Ltd.), then heated using a heating medium boiler, The sensor was used to maintain the temperature set in each bath. The first bath has a temperature of 100 ° C or more and less than 140 ° C, the second bath has a temperature of 140 ° C or more and less than 190 ° C, the third bath has a temperature of 190 ° C or more and less than 240 ° C or the fourth bath has a temperature of 240 ° C or more and less than 290 ° C Temperature.

The mixed waste plastic crushed at about 15 cm using a crusher was then fed to the barrel inlet of the first waste plastic recycling apparatus using a feeder and a hopper.

The mixed waste plastic supplied to the first barrel was transferred to the exit direction of the barrel while being mixed with the heated thermal oil as the barrel rotated. The waste plastic melted during the transfer was submerged to the lower part of the bath through the through hole of the barrel. The settled molten recycled plastic was collected using a molten plastic transfer screw and a collection hopper and then recovered by a recovery device. The recovered heat transfer oil was dropped into a drainage line where the net was installed and recycled to the bath through the recycle line.

The waste plastics not melted in the first barrel were recovered by melting in the same manner through the second, third and fourth barrels.

In addition, the gas generated from each bath was collected through the exhaust pipe on the upper surface of the bath, cooled by a condenser, and stored as a condensate (heavy oil).

(PE) resin having a relatively low melting point was recovered in the first recycled plastic recycling apparatus, and a polypropylene (PP) resin, a soft polyvinyl chloride (PVC) resin and a second recycled (PET) resin, a polycarbonate (PC) resin and an acrylic resin were recovered in the third waste plastic recycling apparatus. In the fourth waste plastic recycling apparatus, a polyamide (nylon) resin and a hard The polyvinyl chloride resin was recovered.

Through the above-described embodiment, the waste plastic recycling apparatus and method of the present invention can dissolve or decompose a waste plastic very quickly, enable the recycling of a large amount of waste plastics even with a small energy, And it was confirmed that almost all of the components were recovered from the waste plastics, thereby minimizing the environmental damage due to reclamation or incineration of the waste plastics.

10: Bath 11: Recovery means
11a: net 12: circulation piping
20: Barrel 21: Barrel entrance
22: Barrel outlet 23: Through hole
24: Transfer piping 30: Waste plastic supply device
40: Hopper 50: Exhaust pipe
60: Heating device 61: Temperature sensor
70: molten plastic feed screw 71: collecting hopper

Claims (10)

a) a bath filled with a heat medium oil; b) a heat medium oil which is installed inside the bass and has a through hole through which the internal material can be conveyed by a rotational force, A barrel for thermally dissolving the waste plastic by direct contact of the barrel c), c) feeding means for feeding waste plastic to the barrel inlet, and d) conveying means for conveying the undissolved waste plastic from the outlet of the barrel Characterized in that
Waste plastic recycling equipment with excellent energy efficiency and productivity. The method according to claim 1,
Wherein the waste plastic recycling apparatus includes recovery means for recovering molten waste plastic, which is thermally dissolved by the through hole of the barrel, and discharged from the lower portion of the bath,
Waste plastic recycling equipment with excellent energy efficiency and productivity. 3. The method of claim 2,
Wherein the waste plastic regeneration device includes a heat medium oil recirculation means for recirculating the heat medium oil separated in the recovery means to the bath
Waste plastic recycling equipment with excellent energy efficiency and productivity. The method according to claim 1,
The b) barrel is provided with a metal wing having a helical surface on its inner side so that when the barrel is rotated, an object in the barrel is pressed against the exit direction
Waste plastic recycling equipment with excellent energy efficiency and productivity. The method according to claim 1,
And b) the through-hole of the barrel has a diameter of 0.5 to 3.0 cm
Waste plastic recycling equipment with excellent energy efficiency and productivity. The method according to claim 1,
The waste plastic regenerating device further comprises a condenser connected to the upper surface of the bath and liquefying the gas generated in the process of melting the waste plastic
Waste plastic recycling equipment with excellent energy efficiency and productivity. a) a bath filled with a heat medium oil; b) a heat medium oil which is installed inside the bass and has a through hole through which the internal material can be conveyed by a rotational force, A barrel for thermally dissolving the waste plastic by direct contact of the barrel c), c) feeding means for feeding waste plastic to the barrel inlet, and d) conveying means for conveying the undissolved waste plastic from the outlet of the barrel Is used as the waste plastic recycling apparatus
Waste plastic recycling method with excellent energy efficiency and productivity. 8. The method of claim 7,
Wherein the waste plastic recycling apparatus includes recovery means for recovering molten waste plastic, which is thermally dissolved by the through hole of the barrel, and discharged from the lower portion of the bath,
Waste plastic recycling method with excellent energy efficiency and productivity. 9. The method of claim 8,
Characterized in that the heat medium oil is filled so as to be 20 to 70% by volume of the barrel
Waste plastic recycling method with excellent energy efficiency and productivity. And a waste plastic regenerating apparatus according to any one of claims 1 to 6,
Waste plastic recycling vehicles.

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