KR102346618B1 - Waste vinyl melting system - Google Patents

Abstract

The present invention relates to a waste vinyl melting system that can be used for melting waste vinyl by recovering heat generated during incineration. The waste vinyl melting system, according to an embodiment of the present invention, comprises: an incinerator incinerating waste to generate heat and providing heat to a first melter; a first melter for receiving heat generated from the incinerator, performing primary melting of waste vinyl, and supplying residual heat to a second melter; a second melter for secondarily melting the primary melt waste vinyl using the residual heat supplied from the first melter, and supplying the residual heat to a waste vinyl input device; and a waste vinyl input device for evaporating moisture of the raw material waste vinyl using the residual heat supplied from the second melter, and supplying the dried raw material waste vinyl to the first melter.

Description

Waste vinyl melting system

The present invention relates to a waste vinyl melting system, and more particularly, to a waste vinyl melting system that can be used for melting waste vinyl by recovering heat generated during incineration.

Waste vinyl is a common occurrence in our daily life, and refers to ethylene, propylene, and rubber. It is collected separately for recycling.

However, most of the waste vinyl discarded after being used for agricultural or industrial purposes is incinerated and disposed of due to difficulties in separation and costly dust. However, there is a problem in that a large amount of harmful gas that causes air pollution is discharged in the process as described above, and there is a problem in that resources are wasted.

Therefore, in order to solve the above problems, a waste vinyl melting apparatus capable of recycling resources has been developed by putting the discarded vinyl into a heating furnace, heating it to a predetermined temperature, and reusing it as a raw material for a synthetic resin material.

That is, when briefly explaining the configuration of the conventional waste vinyl melting apparatus, a tube having a hopper for inputting waste vinyl is installed on one side, and a screw having a plurality of blades formed on the outer circumferential surface to transport the waste vinyl to the inside of the tube. A transport means is installed. And a burner for spraying hot air having a predetermined temperature is installed in the tube body configured as described above, and the waste vinyl being transported is heated and melted into a gel shape, and discharged to the outside through the outlet.

However, in the case of such a conventional waste vinyl melting apparatus, it has the following problems.

First, as the heating method adopts the direct heating method using the hot air of the burner, there are disadvantages in that the thermal efficiency is lowered by inducing pollution and unevenly heating the waste vinyl put into the furnace. In particular, as the structure of the tubular body is biased toward a specific part, the specific part is weakened when used for a long period of time, thereby causing failure. In addition, the waste vinyl is often collected in a state containing a large amount of moisture due to its characteristics and put into the furnace. Effective regeneration was not possible due to problems such as generation of air bubbles.

In addition, there is a problem in that the thermal efficiency is lowered as a cooling device is required to keep the temperature in the heating furnace constant.

(0001) Republic of Korea Public Utility Notice No. 20-2006-0000098 (0002) Republic of Korea Patent Publication No. 10-2006-0083474

The present invention has been devised to solve the above problems, and an object of the present invention is to melt waste vinyl using heat generated from an incinerator, and to provide a system capable of melting waste vinyl without using additional electricity or fuel. that it provides

Another object of the present invention is to provide a waste vinyl melting system capable of maximizing thermal efficiency by sequentially introducing heat generated from the incinerator into the first and second melters.

Another object of the present invention is to provide a waste vinyl melting system capable of maximizing thermal efficiency by evaporating moisture contained in waste vinyl by inputting residual heat remaining after melting into a waste vinyl input machine.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Waste vinyl melting system according to an embodiment of the present invention for solving the above problems is an incinerator that incinerates waste to generate heat and supplies heat to the first melter; a first melter for receiving heat generated from the incinerator, first melting waste vinyl, and supplying residual heat to a second melter; a second melting machine for secondarily melting the primary molten waste vinyl using the residual heat supplied from the first melting machine, and supplying the residual heat to the waste vinyl input machine; and a waste vinyl inserter for evaporating the moisture of the raw material waste vinyl using the residual heat supplied from the second melter, and supplying the dried waste vinyl raw material to the first melter.

In one embodiment, the incinerator, a multi-stage combustion reactor consisting of 2 to 5 stages having different floor heights; 2-50 plasma supply means for supplying plasma to the combustion reactor; and a waste transfer means formed on the bottom surface of the multi-stage combustion reactor and supplying the burning waste to the next stage, wherein the multi-stage combustion reactor includes: a reactor body made of refractory brick or castable; a waste supply means formed on one side of the upper part of the reactor body; and a gas outlet formed on the other side of the lower side of the reactor body, wherein the plasma supply means are arranged at regular intervals on both sides of the combustion reactor along a direction horizontal to the bottom of the combustion reactor, and the waste transport means is located on the upper side and a transfer means body including 2 to 100 perforated parts formed on the side surface; Forward and backward means for moving the transfer means body forward and backward; and an auxiliary combustion means for supplying air or oxygen to the perforated portion formed in the transfer means body, wherein the forward and backward means move the transfer means body forward and backward to remove the waste that is being burned at the bottom of the multi-stage combustion reactor. Supply to the next stage, the first melting machine, a waste vinyl supply unit for supplying the supplied raw material waste vinyl to the melter body; A cylindrical first melter body in which the raw material waste vinyl is supplied from one side, and the primary molten waste vinyl is discharged to the other side; a transfer screw located inside the first melter body and transferring the waste vinyl in another direction; and a primary heating means located outside the first melter body, receiving the combustion gas supplied from the incinerator, heating the first melter body, and supplying residual heat to the secondary heating means, wherein the The waste vinyl supply unit includes: a cylindrical waste vinyl supply unit body connected to the first melter body at a predetermined angle; a waste vinyl supply screw positioned inside the waste vinyl supply unit main body to transport the waste vinyl to the first melter body; and a compression part formed in a connection part between the waste vinyl supply part main body and the first melter body, wherein the waste vinyl supply screw compresses the waste vinyl in the compression part and then supplies it to the first melter body And, the second melting machine, a second melting machine body for secondary melting of the primary molten waste vinyl supplied from the first melting machine; mixing means for mixing the second molten waste vinyl in the second melter body; a secondary heating means for receiving residual heat from the primary heating means to heat the main body of the second melter, and supplying the residual heat to a waste plastic input machine; and an outlet for discharging the molten waste vinyl to the outside, wherein the waste plastic inserter has the other side higher than one side at a predetermined angle, and receives the residual heat supplied from the secondary heating means from the other side to receive the internal waste A cylindrical outer housing for drying the vinyl, a rotating shaft rotating through the inside of the outer housing; and a spiral blade formed on the outer circumferential surface of the rotary shaft, wherein the temperature of the gas generated in the incinerator is 700 ~ 1000 ℃, the temperature in the first melter is 300 ~ 500 ℃, the temperature in the second melter is 200 ~ 300 ℃, the temperature in the waste plastic input machine provides a waste vinyl melting system of 50 ~ 100 ℃.

In one embodiment, the outlet of the second melter body is formed at the lower end of the second melter, the upper side is opened and the outlet body into which the molten waste vinyl flows, and the outlet body is located inside the outlet body, the molten waste vinyl It may include a melt transfer screw for transferring the in one direction.

In one embodiment, the primary heating means may include a re-combustion means for supplying oxygen or air for re-combusting the combustion gas.

According to an embodiment of the present invention, as waste vinyl is melted using heat generated from an incinerator, it is possible to efficiently melt waste vinyl without additional electricity or fuel supply.

In addition, it is possible to manufacture a waste vinyl melting system with high thermal efficiency by sequentially supplying heat generated from the incinerator to each melter.

In addition, since waste vinyl is dried using the residual heat used in the melter, moisture, which is pointed out as the cause of lowering the thermal efficiency, can be completely removed, thereby maximizing the thermal efficiency in the melter.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1 shows the overall configuration of a waste vinyl melting system according to an embodiment of the present invention.
2 is a detailed view of a combustion reactor according to an embodiment of the present invention.
3 is a view showing the appearance of the first melting machine according to an embodiment of the present invention.
Figure 4 shows the internal structure of the first melting machine according to an embodiment of the present invention.
5 shows the external and internal structures of the second melting machine according to an embodiment of the present invention.
6 is a view showing the appearance of a waste plastic input machine according to an embodiment of the present invention.
7 is a view showing the internal structure of the waste vinyl inserter according to an embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the accompanying drawings are only provided to facilitate understanding of the various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various components, but these components are not limited by the above-mentioned terms. The above terminology is used only for the purpose of distinguishing one component from another component.

In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof. When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

Meanwhile, as used herein, a “module” or “unit” for a component performs at least one function or operation. And “module” or “unit” may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of “modules” or a plurality of “units” other than a “module” or “unit” to be performed in specific hardware or to be executed in at least one processor may be integrated into at least one module. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

1 shows the configuration of a waste vinyl melting system of the present invention, and FIG. 2 shows the structure of a multi-stage combustion reactor.

The present invention is an incinerator for incinerating waste to generate heat and supplying heat to the first melting machine; a first melter for receiving heat generated from the incinerator, first melting waste vinyl, and supplying residual heat to a second melter; a second melting machine for secondarily melting the primary molten waste vinyl using the residual heat supplied from the first melting machine, and supplying the residual heat to the waste vinyl input machine; And it relates to a waste vinyl melting system including a waste vinyl input device for evaporating the moisture of the raw material waste vinyl by using the residual heat supplied from the second melter, and supplying the dried raw material waste vinyl to the first melter.

The incinerator 100 is a device that incinerates waste to generate heat, and in the present invention, any combustible waste can be used without limitation, but preferably waste plastic waste or waste vinyl can be used as fuel. In particular, since the present invention provides a system for melting waste vinyl, a single raw material can be used by using the same raw material, waste vinyl, as fuel. It is also possible to melt

The incinerator 100 includes a multi-stage combustion reactor consisting of 2 to 5 stages having different floor heights; 2-50 plasma supply means 130 for supplying plasma to the combustion reactor; and a waste transfer means 140 formed on the bottom surface of the multi-stage combustion reactor and supplying the burning waste to the next stage. The incinerator performs complete combustion during incineration, and it is preferable to use a multi-stage combustion reactor to maximize efficiency.

The multi-stage combustion reactor includes a reactor body 120 made of refractory brick or castable; Waste supply means 121 formed on one side of the upper portion of the reactor body; and a gas outlet 122 formed below the other side of the reactor body.

The multi-stage combustion reactor body 120 is a part constituting the body of the incinerator and is manufactured in a square or circular pipe shape, a waste supply means 121 is installed on one side in the axial direction, and gas discharge is provided on the other side. Means 122 may be installed. The multi-stage combustion reactor body 120 may also be manufactured in a vertical cylindrical or square column shape, in this case the waste supply means 121 is installed on one side of the upper part, and the gas outlet 122 on the other side of the lower part. ) can be installed. That is, it is preferable that the waste supply means 121 is installed on one side of the multi-stage combustion reactor body 120 , and the gas outlet 122 is installed on the other side. Accordingly, the fuel (waste) supplied from the waste supply means 121 may be discharged in the direction of the gas outlet 122 on the other side through a combustion reaction in the combustion reactor body 120, and the generated high-temperature gas is also described above. It may be discharged in the direction of the gas outlet 122 .

In addition, the multi-stage combustion reactor may be composed of 2 to 5 stages having different heights in order to increase combustion efficiency. In each stage, the waste is transferred to the next stage through the movement of the waste transfer means 140 to be described later, and since combustion can occur under individual conditions at each stage, higher combustion efficiency can be obtained compared to combustion in one space. In addition, it is possible to reduce the amount of harmful gas generated due to complete combustion (refer to (b) of FIG. 2).

However, when the multi-stage combustion reactor exceeds 5 stages, the size of the incinerator becomes large, which is inefficient, and the temperature of the discharged gas is lowered, so that foreign substances such as tar may be generated on the main surface of the gas outlet.

The multi-stage combustion reactor body 120 may be made of refractory bricks or castables. The castable is a kind of refractory cement, and it is possible to form a combustion furnace having a certain shape through a molding oil curing process. Refractory bricks, on the other hand, are fire resistant materials manufactured in the shape of bricks having a constant h shape, which can be stacked regularly to form a combustion furnace. In the present invention, the multi-stage combustion reactor body 120 can be manufactured using the castable or refractory bricks, but preferably, the reactor body is manufactured with refractory bricks, and then the castables are placed in a gap between the refractory bricks. It is preferable to manufacture the multi-stage combustion reactor body 120 by a method of filling.

The plasma supply means 130 is a device that helps complete combustion of the waste by supplying plasma to the inside of the combustion reactor. Existing incinerators use fossil fuels to incinerate waste. However, in the case of fossil fuels, not only can they generate toxic gases (especially carbon monoxide) on their own, but also the amount of carbon dioxide is increased. In addition, in the case of an incinerator using fossil fuels, it is difficult to reach the complete combustion temperature of the waste because there is a limit to raising the combustion temperature. Therefore, in the case of the present invention, the complete combustion of the waste can be helped by installing the plasma combustion means 130 inside the combustion reactor (see FIG. 2 ).

The multi-stage combustion reactor may include 2 to 50 plasma combustion means 130 . The plasma combustion means may be arranged at regular intervals on the side surface of the multi-stage combustion reactor body 120, wherein the plasma combustion means 130 is arranged at regular intervals on both sides along a direction horizontal to the bottom of the reactor body. It is preferable to be (Fig. 2 (a) and (c)). In particular, since the waste is supplied from the waste supply means 121 located at the upper side of the reactor body, most of the waste is burned at the bottom of the reactor body. Therefore, in order to maximize the efficiency of the plasma combustion means 130, the plasma reactor may be installed on the bottom side of the multi-stage combustion reactor body 120 .

In addition, when the combustion reactor is configured in a multi-stage type as in the present invention, 2 to 30 of the plasma reactors are arranged at the top, and the rest can be arranged in stages 2 to 5 (FIG. 2 (a) and (b)) ). In the case of the present invention, as described above, since the waste is supplied from the waste supply means 121 on one side, the part where most of the waste is burned is the uppermost reactor. Therefore, if the temperature of the uppermost part of the reactor is lowered, there is a possibility that a lot of toxic gases will be generated. Accordingly, in the case of the present invention, by disposing more than half of the plasma combustion means 130 in the uppermost reactor, it is possible to help smooth combustion of the waste.

The waste transfer means 140 is installed inside the multi-stage combustion reactor, and serves to supply the burning waste to the next stage. The waste conveying means 140 includes a conveying unit body including 2 to 100 perforated parts formed on the upper side and the side surface; Forward and backward means for moving the transfer means body forward and backward; And it may include an auxiliary combustion means for supplying air or oxygen to the perforated portion formed in the transfer means body.

2 to 100 perforated parts are formed in the upper part of the transfer means main body to discharge oxygen or air supplied from the auxiliary combustion means to the upper side. In the case of oxygen or air discharged in this way, it not only helps the complete combustion of the waste, but also increases the temperature inside the multi-stage combustion reactor so that the harmful gas can be oxidized and removed. When only one perforated part is installed, the oxygen or air cannot be smoothly supplied, and when 100 or more are installed, durability of the transport means may deteriorate and manufacturing cost may increase.

The forward/backward means may move the waste conveying means 140 back and forth. When the waste conveying means 140 is repeatedly moved forward and backward by the forward moving means, a part of the burning waste may be pushed and supplied to the next stage. Through this, the burning waste may slowly move toward the gas outlet 122 . In the case of a generally used screw-type transporter, if the burning waste is transported as described above, incomplete combustion may occur depending on the position of the screw, so it is preferable to transport the burning waste using this type of transporting means.

The auxiliary combustion means is a means for supplying oxygen or air to the perforated portion located on the upper portion of the waste transfer means 140, and may supply pressurized oxygen or air to the inside of the multi-stage combustion reactor. In particular, as shown above, since the supplied waste is located at the bottom of the combustion reactor and burned, the left front combustion of the waste can be aided by supplying the oxygen or air through the transfer means body that is closest to the bottom. . In addition, in the case of oxygen or air supplied as described above, it is possible to simultaneously perform a role of lowering the temperature of the transfer means body, thereby preventing the transfer means body from being damaged by thermal fatigue.

In the case of the inside of the incinerator 100, it is combusted using plasma and an excess of oxygen or air is supplied using the auxiliary combustion means, so that the temperature can be maintained at 2000 ~ 5000 ℃. In the case of combustion at the above temperature, the emission of harmful gases due to incomplete combustion can be minimized, and thermal efficiency can be increased because it is also smooth with the gas of the waste. However, in the case of the combustion gas formed at such a temperature, the temperature is lowered through the gas discharge means 122, and finally, the gas generated in the incinerator may have a temperature of 700 ~ 1000 ℃. If the temperature of the gas generated in the incinerator is less than 700 ℃, the deposition of tar due to unburned ash may occur, and if it exceeds 1000 ℃, thermal fatigue occurs in the external pipe, which may be a problem.

As described above, the gas formed in the incinerator is supplied to the first melter to supply heat.

Figure 3 shows the appearance of the first melting machine, Figure 4 is a schematic view of the internal configuration of the first melting machine.

The first melter 200 is a portion that first melts the waste vinyl supplied by using the heat generated in the incinerator 100, and a waste vinyl supply unit for supplying the raw waste vinyl supplied to the melter body; A cylindrical first melter body 220 in which the raw material waste vinyl is supplied from one side, and the primary molten waste vinyl is discharged to the other side; a transfer screw 221 located inside the first melter body and transferring the waste vinyl in another direction; and a primary heating means 210 located outside the first melter body, receiving the combustion gas supplied from the incinerator, heating the first melter body, and supplying residual heat to the secondary heating means can do.

The waste vinyl supply unit 230 serves to supply the raw material waste vinyl to the inside of the first melting machine, and has a cylindrical shape and includes a transfer screw 231 inside, so that the existing structure is the first melting machine. similar to the gui

That is, the waste vinyl supply unit includes: a cylindrical waste vinyl supply unit body 230 connected to the first melter body at a predetermined angle; a waste vinyl supply screw 231 positioned inside the waste vinyl supply unit main body to transport the waste vinyl to the first melter body; and a compression unit 232 formed in a connection portion between the waste vinyl supply unit body and the first melter body.

When the raw material waste vinyl is supplied through the waste vinyl supply unit having the above structure, the raw material waste vinyl may be compressed in the compression unit 232 and supplied to the first melter body 220 . In the case of most waste vinyl, the shape is not constant, and since it has malleability and ductility, it cannot achieve a fixed shape. Due to the nature of the waste vinyl, the waste vinyl is caught in the rotating part of the screw transfer device, causing many failures. In order to prevent this, a gap is formed between the screw transfer device and the external container, but in the case of the first melter 200 of the present invention, the reverse flow of the molten waste vinyl is prevented because the molten waste vinyl exists inside. In order to do this, it is desirable to minimize the gap. That is, when the waste vinyl is directly put into the first melting machine, many failures may occur due to jamming of the waste vinyl. Therefore, in the present invention, a compression unit 232 may be installed between the waste vinyl supply unit and the first melter to compress and supply the waste vinyl. In the case of compressed waste vinyl, since it is compressed with reduced malleability and ductility, a failure due to pinching of the waste vinyl can be minimized. It can be pulverized once more by means of a vacuum cleaner, so that it can be melted uniformly while preventing failure due to pinching of waste plastic.

The first melter body 220 may be formed in a cylindrical shape in which the raw material waste vinyl is supplied from one side, and the primary molten waste vinyl is discharged to the other side. In addition, a transfer screw 221 may be installed inside the body of the first melter. While rotating the transfer screw 221 in one direction, the waste vinyl located inside the first melter body 220 is transferred, and the waste vinyl is the primary installed outside the first melter body 220 . It may be heated through the heating means 210 to start melting. In the case of the existing waste vinyl melter, as the melting was performed only in one space, the cold waste vinyl was supplied to the melter, resulting in a very low thermal efficiency. However, in the case of the present invention, since the first melting is performed in the first melting machine 200 and then supplied to the second melting machine 300, thermal efficiency can be maximized. In this case, the waste vinyl located in the first melter 200 may be completely melted and discharged to the second melter 300 , but it is also possible to be supplied after a part is melted or softened. Even if it is not completely melted and is partially softened and then supplied to the second melter 300 , it may be supplied at a temperature that does not differ significantly from the melting temperature due to the characteristics of the polymer resin, and then secondary melted in the second melter 300 . can be used to form a product, so that thermal efficiency can be maximized.

The primary heating means 210 is a space formed around the first melter 200, and the means for heating the first melter 200 using the gas discharged from the incinerator is simply a space formed around the incinerator 100. It is also possible to heat by injecting the gas generated from the ), and in order to increase the heating efficiency, the heat medium is heated using the gas generated in the incinerator 100, and then it is used in the first melter 200. It can also be heated by supplying it to the In addition, in order to further increase the temperature of the gas generated in the incinerator 100 and to completely oxidize the harmful gas, the primary heating means 210 may include a re-burning means for supplying oxygen or air. The gas generated in the incinerator 100 can supply gas that is completely combusted as much as possible, but some incompletely combusted gas may be mixed and discharged, and the temperature of the first melter 200 is further increased by re-burning it. can do it In addition, when air or oxygen is injected using the re-burning device over the complete oxidation condition, the temperature of the first melter 200 may be lowered as the gas having a low temperature is mixed. As an application of this, the re-burning device can be used for both raising or lowering the temperature of the first melter 200, and by maintaining an appropriate temperature, the waste vinyl present in the first melter 200 can be melted. can make it

The temperature inside the first melting machine 200 may be 300 ~ 500 ℃, preferably 350 ~ 450 ℃, most preferably 400 ℃. The gas generated in the incinerator 100 has a temperature of 700 ~ 1000 ℃ when discharged from the incinerator, the first melter 200 heated using the gas may have a temperature of 300 ~ 500 ℃. At this time, if the temperature of the first melter 200 is less than 300 ℃, the temperature of the waste vinyl inside does not increase, so that the waste vinyl does not melt normally, or the thermal efficiency in the second melter 300 to be described later may decrease. In addition, when it exceeds 500° C., the waste vinyl is oxidized or carbonized, and a failure may occur that is attached to the wall or screw of the first melter 200 .

Figure 5 shows the second melting machine, (a) shows the exterior, (b) shows the internal configuration.

The second melting machine 300 is a part to make a product by second melting the first melted waste vinyl in the first melting machine 200, and the second melting machine 300 is different from the first melting machine. A bath-type or hopper-type melter (see Fig. 5) can be used. The first melter 200 continuously supplies waste vinyl to the second melter 300, and since solid waste vinyl and molten waste vinyl need to be transported at the same time, a screw type feeder can be used, but In the case of the second melting machine 300, most of the waste vinyl exists in a molten state, and since it is discharged as a product, it is preferable to completely melt the waste vinyl using a bath or hopper type melter.

To this end, the second melter 300 includes a second melter body 320 for secondarily melting the primary molten waste vinyl supplied from the first melter 200; a mixing means 330 for mixing the second molten waste vinyl in the second melter body; a secondary heating means for receiving residual heat from the primary heating means to heat the main body of the second melter, and supplying the residual heat to a waste plastic input machine; And it may include an outlet 310 for discharging the melted waste vinyl to the outside.

As described above, the melter body 320 preferably uses a bathtub or hopper-type melter, and an outlet 310 is formed at the lower portion to discharge the melted waste vinyl. At this time, the second melter 200 may use a circular, square, pentagonal or hexagonal melter, mixing by rotation is easy, and a melter having a circular cross-section to prevent waste vinyl from sticking to the corners is used. can

The second melting machine 300 may include a mixing means 330 . The waste vinyl first melted in the first melter 200 is continuously supplied to the second melter 300 , and it is melted secondarily and discharged to the outlet 310 . At this time, if the molten waste vinyl is not mixed, a temperature deviation may occur at each point, and accordingly, the waste vinyl may be solidified in the second melting machine 300 . In order to prevent this, it is possible to raise the minimum temperature in the second melting machine 300 above the melting point of the waste vinyl, but in this case, the thermal efficiency may be lowered as a high amount of heat is required. In the present invention, it is preferable to install the mixing means 330 inside the second melting machine 300 in order to minimize the temperature deviation. The mixing means 300 may be used without limitation as long as it can uniformly mix the molten waste vinyl, and preferably, a gate blade type stirrer may be used as shown in FIG. 5 . However, in the case of the stirrer, it is preferable to prevent this by installing a heating means in the shaft portion of the stirrer because the temperature around the shaft connected to the outside may decrease and the molten waste vinyl may be solidified.

An outlet 310 may be formed in the second melting machine 300 . The outlet 310 is a part for discharging the molten waste vinyl in the second melting machine 300 to the outside, and may be simply an outlet having a stopper or a valve, but is formed at the lower end of the second melting machine, and the upper side is It is preferable to include an outlet body through which the open and molten waste vinyl is introduced, and a melt feed screw positioned inside the outlet body and transporting the molten waste vinyl in one direction.

The outlet 310 may have an inlet installed on the upper side, and the inlet may be connected to the main body of the second melter. In the case of a general liquid, it can be smoothly discharged only through the inlet, but in the case of molten waste vinyl, since it has a high viscosity, even if the inlet is simply opened, the discharge rate to the outside is slow, which may cause a delay. Therefore, it is preferable to connect the inlet to the lower end of the second melter as described above, but install an Isol screw inside the main body of the outlet to transport the high-viscosity molten waste vinyl (refer to (b) of FIG. 5).

The temperature inside the second melting machine 300 may be 200 ~ 300 ℃. The second melter 300 may be heated only with residual heat of heating the first melter 200 . To this end, the second melter 300 may be supplied with gas or heat that has passed through the primary heating means 210 installed in the first melter 200, and using this, the second melter 300 ) can be heated. Although the temperature inside the second melter 300 is lower than that of the first melter 200, the melting point of the waste vinyl is maintained so that the waste vinyl can be melted smoothly, and it is different from the existing waste vinyl melter. Otherwise, since the waste vinyl heated primarily in the first melting machine 200 is supplied, the change in temperature is minimized and the thermal efficiency thereof can be maximized. In addition, when the internal temperature of the second melter 300 is less than 200 ℃, the viscosity of the molten waste vinyl may be increased or solidified, so it may be difficult to discharge, and the temperature exceeding 300 ℃ is supplied from the first melter 200 It is inefficient because it is impossible to implement with the residual heat generated and requires additional fuel cost.

The gas or fruit passing through the second melter 300 may be supplied to the waste vinyl input device 400 and used to evaporate moisture of the raw material waste vinyl. In the case of the collected raw material waste vinyl, it requires a cleaning process as it is collected along with many foreign substances. In the case where the washed raw material waste vinyl is still put into the melter, it is necessary to melt the waste vinyl due to the latent heat of evaporation of water. It is known as the main culprit for reducing the thermal efficiency of the device, and many efforts are being made to solve it. In the case of the present invention, the residual heat of the second melting machine 300 is supplied to the waste vinyl input machine 400 to dry the raw material waste vinyl, and then, as the waste vinyl is fed into the first melt machine 200, moisture A decrease in thermal efficiency can be minimized.

6 is a view showing the exterior of the waste vinyl inserter, and FIG. 7 is a view showing the internal structure of the waste vinyl inserter.

To this end, the waste vinyl input machine 400 is formed with the other side higher than one side at a predetermined angle, and receives the residual heat supplied from the secondary heating means from the other side to dry the waste plastic inside the cylindrical outer housing 420 . ), a rotating shaft 430 that passes through the inside of the outer housing and rotates; And it may include a spiral blade 440 formed on the outer peripheral surface of the rotation shaft. The outer housing 420 has the other side higher than one side at a certain angle, and the raw material waste vinyl may be supplied 410 from one side. The raw waste vinyl supplied in this way is transferred to the other side according to the rotation of the rotation shaft 430 and the spiral blade 440 existing inside the outer housing, and residual heat of the second melter 300 supplied from the other direction. may cause drying. However, in order to further facilitate drying during the movement as described above, the inside of the outer housing 420 may include a waste vinyl mixing means formed inside the outer housing in the longitudinal direction. The waste vinyl mixing means rotates according to the rotation of the rotating shaft, and thus the waste vinyl is raised along the wall surface of the outer housing. However, since the waste vinyl is not fixed to the waste vinyl mixing means, the waste vinyl rises to a predetermined position and is separated from the waste vinyl mixing means and is located at the top of the raw material waste vinyl. When this process is repeated, the waste vinyl on the floor is moved to the uppermost stage by the waste vinyl mixing means, and the amount exposed to the air during movement increases, so that more smooth drying can be performed.

At this time, the temperature inside the waste plastic inserter 400 may be 50 ~ 100 ℃. If the temperature inside the waste plastic inserter is less than 50 ℃, it may be difficult to dry the waste vinyl, and if it exceeds 100 ℃, it is uneconomical because fuel is required to further increase the temperature inside the waste plastic inserter.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications are possible by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

100: incinerator
120: combustion reactor body
121: waste supply means
122: gas outlet
130: plasma supply means
140: waste transport means
200: first melting machine
210: primary heating means
220: first melter body
221: transfer screw
230: waste vinyl supply unit
231: waste vinyl supply screw
232: crimping part
300: second melting machine
310: outlet
320: second melting machine body
330: mixing means
400: waste plastic inserter
410: waste vinyl input unit
420: waste plastic inserter body
430: rotation axis
440: spiral wings
450: transfer space
460: fixed shaft
470: waste vinyl outlet

Claims (2)

an incinerator that incinerates waste to generate heat and supplies heat to the first melter;
a first melter for receiving heat generated from the incinerator, first melting waste vinyl, and supplying residual heat to a second melter;
a second melting machine for secondarily melting the primary molten waste vinyl using the residual heat supplied from the first melting machine, and supplying the residual heat to the waste vinyl input machine; and
a waste vinyl input device for evaporating the moisture of the raw material waste vinyl using the residual heat supplied from the second melter, and supplying the dried waste vinyl raw material to the first melter;
In the waste vinyl melting system comprising a,
The incinerator,
A multi-stage combustion reactor consisting of 2 to 5 stages having different floor heights;
2-50 plasma supply means for supplying plasma to the combustion reactor; and
It is formed on the bottom surface of the multi-stage combustion reactor, and includes a waste transport means for supplying the burning waste to the next stage,
The multi-stage combustion reactor,
a reactor body made of refractory brick or castable;
a waste supply means formed on one side of the upper part of the reactor body; and
It includes a gas outlet formed below the other side of the reactor body,
The plasma supply means are arranged at regular intervals on both sides of the combustion reactor along the horizontal direction with the bottom of the combustion reactor,
The waste transport means
a transfer means body including 2 to 100 perforated portions formed on the upper side and the side surface;
Forward and backward means for moving the transfer means body forward and backward; and
It includes an auxiliary combustion means for supplying air or oxygen to the perforated portion formed in the transfer means body,
The forward and backward means for moving the main body of the transfer means forward and backward, and supplies the waste that is being burned at the bottom of the multi-stage combustion reactor to the next stage,
The first melting machine,
a waste vinyl supply unit for supplying the raw material waste vinyl to the melter body;
A cylindrical first melter body in which the raw material waste vinyl is supplied from one side, and the primary molten waste vinyl is discharged to the other side;
a transfer screw located inside the first melter body and transferring the waste vinyl in another direction; and
It is located outside the first melter body, and receives the combustion gas supplied from the incinerator to heat the first melter body and includes a primary heating means for supplying residual heat to the secondary heating means,
The waste vinyl supply unit,
a cylindrical waste vinyl supply unit connected to the first melter body at a predetermined angle;
a waste vinyl supply screw positioned inside the waste vinyl supply unit main body to transport the waste vinyl to the first melter body; and
and a compression part formed in the connection part between the waste vinyl supply part body and the first melter body,
The waste vinyl supply screw compresses the waste vinyl in the compression part, and then supplies it to the body of the first melter,
The second melting machine,
a second melting machine body for secondary melting of the primary molten waste vinyl supplied from the first melting machine;
mixing means for mixing the secondary molten waste vinyl in the second melter body;
a secondary heating means for receiving residual heat from the primary heating means to heat the main body of the second melter, and supplying the residual heat to a waste plastic input machine; and
It includes an outlet for discharging the melted waste vinyl to the outside,
The waste vinyl inserter,
A cylindrical outer housing in which the other side is formed higher than one side at a predetermined angle, and the other side receives the residual heat supplied from the secondary heating means to dry the waste vinyl inside;
a rotating shaft that passes through the inside of the outer housing and rotates; and
It includes a spiral blade formed on the outer circumferential surface of the rotation shaft,
The temperature of the gas generated in the incinerator is 700 ~ 1000 ℃, the temperature in the first melter is 300 ~ 500 ℃, the temperature in the second melter is 200 ~ 300 ℃, the temperature in the waste vinyl input machine is Waste vinyl melting system at 50~100℃. delete

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