KR101914366B1 - Transfer device with double screw structure and waste plastic emulsification system using the same - Google Patents

Abstract

Disclosed is a transfer device having a double screw structure and a waste plastic emulsification system using the same. A waste plastic emulsification system according to an embodiment of the present invention includes a heating unit for heating a raw material containing waste plastic and a condenser for condensing the gas generated from the raw material heated by the heating unit to produce a primary oil And the heating unit includes a feed screw and a first screw and a second screw which are provided in the feed screw and are capable of being conveyed by the rotary wing assembly formed in a spiral shape on the shaft by rotation of the shaft Wherein the first screw and the second screw are alternately arranged such that a first rotary blade formed on the first screw and a second rotary blade formed on the second screw are alternately arranged, And a part of the wing is disposed so as to be covered by the second rotary blade.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device having a double screw structure and a waste plastic emulsification system using the same,

The present invention relates to a conveying apparatus having a double screw structure and a waste plastic emulsification system using the same. More particularly, the present invention relates to a conveying apparatus having a double screw structure, By alternately arranging the wings so that the wings are alternately arranged, it is possible to perform the simultaneous feeding of the raw material and the stirring by the rotating blades while rotating the respective blades, so that the uniform heating by the smooth feeding and stirring of the raw materials is possible, The present invention relates to a technical idea capable of preventing the solidification of raw materials and promoting reduction.

Technical ideas for recycling waste plastics or generating renewable energy from waste plastics have been actively studied.

BACKGROUND ART Conventionally, a conventional waste plastic emulsification system for thermally decomposing waste plastics and chemically recycling them comprises a heating furnace for decomposing waste plastics in a solid state through a pulverizer, a heating furnace for heating the waste plastics, And then pyrolysis is used.

When the waste plastic is pyrolyzed, the raw material (i.e., waste plastic) is heated and vaporized with various organic gases (gas), and the gas is condensed and liquefied according to the types thereof, thereby producing oil from the waste plastic.

However, due to the characteristics of the plastic used as the raw material, the thermal conductivity is relatively low, which makes it difficult to uniformly heat the raw materials during the pyrolysis process. For example, in general, a waste plastic emulsification system is heated while slowly transferring a raw material through a predetermined transfer path (or a heating furnace). At this time, a screw is provided in the conveying path for conveying the raw material, and the raw material is conveyed by the rotating blade formed on the screw.

However, in the case of plastic, heat does not melt in a completely liquid state like water, but is thermally decomposed in a state of gelation or melting when it is melted or melted. Conventionally, the screw for transporting is a structure using a single screw, There occurs a phenomenon in which the raw material is not stirred inside the furnace, but merely pushed constantly along the conveying direction. In this case, if the raw material located outside the feed path continuously remains only outside the feed path, the possibility that the raw material located at the inner side (central portion) of the feed path will stay in the center of the feed path all the way through the feed path becomes considerably higher.

In general, the heating of the raw material in the waste plastic emulsification system is mainly performed outside the transfer path. Accordingly, the outside of the conveying path has a relatively high temperature, and the inside (the central portion) of the conveying path can be relatively lowered in temperature. In this case, the raw material located outside the transfer path may be carbonized due to a high temperature beyond the melting or melting, and the raw material existing inside the transfer path may be carbonized due to high temperature, On the other hand, the raw material located in the center portion is not properly melted or melted, and the efficiency of pyrolysis can be significantly deteriorated.

Therefore, even if the raw material is relatively low in the heat transfer rate, it is possible to uniformly heat the raw material conveyed from the inside of the conveying path to the gel state, thereby facilitating reduction by forming airflow inside the conveying path by agitating the raw material Technical ideas are required.

In addition, a technical idea is required to prevent the risk that the raw material is prevented from being hindered due to agitation of the raw material due to solidification during transportation and sticking to the inner wall, screw, or the like of the feed path.

Korean Registered Patent (Registration No. 10-1026202, "Pyrolysis and Emulsification Apparatus for Waste Plastics")

SUMMARY OF THE INVENTION Accordingly, it is a technical object of the present invention to provide a transfer device for transferring a raw material in a waste plastic emulsification system with a double screw structure, Even if the raw material falls to the bottom of the furnace.

In addition, due to the double screw structure, the raw material can be agitated naturally by using the rotating blades of each screw, so that it is possible to coagulate during transportation and adhere to the inner wall or screw of the transfer path to prevent the transfer of the raw material.

According to an aspect of the present invention, there is provided a waste plastic emulsification system comprising: a heating unit for heating a raw material containing waste plastic; and a condenser for condensing gas generated from the raw material heated by the heating unit And a condensing section for generating tea oil. The heating section includes a transferring passage, and a first conveying passage provided inside the conveying passage and capable of conveying the raw material by a rotary vane assembly formed in a spiral shape on the shaft by rotation of the shaft, Wherein the first screw and the second screw have a first rotating blade formed on the first screw and a second rotating blade formed on the second screw, And a part of the first rotary blade is disposed so as to be covered by the second rotary blade.

The conveying path may include a first conveying path having the first screw therein and a second conveying path having the second screw therein, and the first conveying path and the second conveying path may include a first conveying path, And the side faces of the first screw and the second screw are communicated with each other.

The first screw and the second screw may be formed in such a manner that the rotational direction of the rotational vane formed in each end section is opposite to the rotational direction of the rotational vane in the remaining section.

In addition, the transfer device may be configured such that the inner surface of the first rotary blade and the second rotary blade and the transfer path are spaced from each other by a predetermined distance.

According to an aspect of the present invention, there is provided a conveying apparatus having a double screw structure, the conveying apparatus including a conveying path, and a rotating blade provided inside the conveying path, the rotating blade being spirally formed on the shaft by rotation of the shaft, Wherein the first screw and the second screw are formed by a first rotary blade formed on the first screw and a second rotary blade formed on the second screw, Wherein the first rotary blade and the second rotary blade are disposed such that a portion of the first rotary blade is obscured by the second rotary blade, and a terminal section of the first screw and the second screw is disposed between the first rotary blade and the second rotary blade, And the rotation direction of the second rotary blade is formed to be opposite to the remaining section.

According to the technical idea of the present invention, a transfer device for transferring a raw material in a waste plastic emulsification system is realized as a double screw structure, and a raw material transferred in a gel state in the transfer path is appropriately stirred, It is possible to perform uniform heating even with stirring.

In addition, due to the double screw structure, the raw material can be agitated naturally by using the rotating blades of each screw, so that it coagulates during transfer and sticks to the inner wall or screw of the transfer path, so that the transfer of the raw material can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of each drawing is provided to more fully understand the drawings recited in the description of the invention.
1 shows a schematic configuration of a waste plastic emulsification system according to an embodiment of the present invention.
2 shows a schematic configuration of a preprocessing unit according to an embodiment of the present invention.
3 shows an embodiment of a transfer device having a double screw structure according to an embodiment of the present invention.
4 shows an embodiment of a transfer path in a transfer device having a double screw structure according to an embodiment of the present invention.
Fig. 5 shows a schematic configuration of a heating unit according to an embodiment of the present invention.
6 shows an embodiment of a transfer device having a double screw structure according to another embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 shows a schematic configuration of a waste plastic emulsification system according to an embodiment of the present invention, and FIG. 2 shows a schematic configuration of a pretreatment unit according to an embodiment of the present invention.

1, a waste plastic emulsification system 100 according to an embodiment of the present invention includes a pretreatment unit 110, a heating unit 120, a condensation unit 130, and / or a purification unit 140 .

The raw material containing the waste plastic may be pulverized through the pretreatment unit 110 and removed into the heating unit 120 in a state where moisture is removed.

2, the pretreatment unit 110 according to the embodiment of the present invention may pulverize the raw material (raw material containing waste plastic) in a solid state, and the pulverized raw material may be transferred to the magnetic drum 112 . Then, the magnetic drum 112 can remove foreign substances such as iron, which are not plastic components.

The raw material from which the iron component is removed from the magnetic drum 112 may be transferred to the drying device 113 to remove moisture. For example, the drying device 113 can dry the raw material using warm air.

The raw material may be transferred to be heated and melted and / or melted by a transfer device included in the heating unit 120.

According to an embodiment of the present invention, oxygen may be removed by filling nitrogen during transportation of the raw material in order to prevent air contact with the raw material during the continuous process. When the air is contacted or the oxygen ratio is high during the transportation of the raw material, there is a danger that the raw material becomes a vaporization point through the heating part 120 and explodes, so that the air layer (oxygen) is removed Can be important.

Meanwhile, according to the technical idea of the present invention, the heating unit 120 heats the raw material through two processes having different temperature ranges, so that the raw material can be smoothly and efficiently melted / melted have. For this, the heating unit 120 may include a melting device 121 and / or a melting device 122.

Depending on the embodiment, the heating section 120 may be configured to separate and / or separate the raw material through one device or path, such as the melting device 121 and / or the melting device 122, And may be implemented to melt. If necessary, the heating unit 120 may include a plurality of smoothing devices 121 and / or a plurality of melting devices 122. It will be appreciated by those of ordinary skill in the art that the technical idea of the present invention may be applied to the present invention.

In the present specification, the term " melting " may mean a process in which a raw material in a solid state is heated and softened. For example, the raw material melted in the melting device 121 may be a state in which the raw material in a solid state is softened in a gel state.

Also, melting may refer to a process of heating the melted (softened) raw material again. For example, when the raw material melted in the melting device 121 is transferred to and melted in the melter 122, the melting device 122 may be operated at different temperature intervals (for example, Relatively high temperature). In this case, the molten raw material may be more softened than the raw material in the melting apparatus 121. The heating unit 120 will be described later with reference to FIG.

The condenser 130 may be heated by the heating unit 120 to condense and vaporize the vaporized raw material to generate a primary oil.

The primary oil generated by the condenser 130 may be purified by the purifier 140 to finally generate oil.

On the other hand, the raw material pretreated by the pretreatment unit 110 is heated and melted / melted while being transferred from the heating unit 120 as described above. According to the technical idea of the present invention, It is possible to provide an efficient and smooth transfer device for melting / melting. This will be described in detail with reference to FIG. 3 to FIG.

3 shows an embodiment of a transfer device having a double screw structure according to an embodiment of the present invention.

3, a conveying apparatus 1 having a double screw structure according to an embodiment of the present invention includes a conveying path 30 and a conveying path 30 provided inside the conveying path 30, The first screw 10 and the second screw 12, which can be transported by the rotation of rotating blades (for example, 12 and 22) spirally formed on the axis (for example, 11 and 21) (20).

At this time, the first screw 10 and the second screw 20 are connected to the first rotary blade 12 formed on the first screw 10 and the second rotary blade 12 formed on the second screw 20 22 may be alternately arranged. That is, as shown in the drawing, the first screw 10 and the second screw 20 are arranged side by side in the conveying path 30, (For example, 11 and 21) may be arranged to intersect with each other.

Also in such a case, a portion of the first rotary vane 12 (or the second rotary vane 22) is covered by the second rotary vane 22 (or the first rotary vane 12) So that any one of the rotating blades can be disposed in the space between the remaining rotating blades. In other words, the first screw 10 and the second screw 20 may be spaced apart from each other by a predetermined distance. This can mean that as shown in the drawing, the sections in which the respective blades overlap each other when viewed in cross section are arranged so as to be at least partially present.

In the case where the first rotary vane 12 and the second rotary vane 22 are alternately arranged such that a part of each rotary vane is positioned in the space between the other rotary vanes, 10 and the second screw 20, each of the rotary blades can rotate and have a stirring effect by the rotary blades when the material is heated and conveyed along the conveying direction.

As described above, the raw material including the waste plastic is transferred to the gel state through the melting / melting process, rather than being completely dissolved into the liquid state while being heated. Since the thermal conductivity is relatively low due to the nature of the plastic, it is difficult for the raw materials to be conveyed to be evenly melted / melted to easily re-solidify in the state of being melted / melted and adhered to the inner surface of the feed path 30, There is a risk that the transfer of the raw material may be blocked.

Therefore, in the case of using a single screw as in the case of the conventional transfer device, the screw may be used to merely push the raw material straightly, rather than being heated evenly while the raw material is being stirred by the screw. The material is excessively heated and carbonized on the outer side of the transfer path, and the material is not properly melted / melted at the center of the transfer path where the heat transfer is relatively lowered due to the low thermal conductivity, or the material that has been melted / melted solidifies again There is a problem.

However, according to the technical idea of the present invention, by implementing the double screw structure in the transfer device as described above, the rotary blades formed on the respective screws can stir the materials located in the central portion of the transfer path 30, It is possible to solve the problems. That is, according to the technical idea of the present invention, the conveying device 1 having the double screw structure is capable of smoothly conveying the raw material, and the raw material in the gel state is conveyed to the first rotary blade 12 and the second rotary blade 22 It is possible to evenly heat the raw material.

Meanwhile, the conveying device 1 having the double screw structure has an interval of a predetermined distance between the inner surface of the conveying path 30 and the first rotary vane 12 and the second rotary vane 22 As shown in Fig. For example, in the drawing, the first rotary blade 12 formed on the first screw 10 located on the left side (upper side in the drawing) of the transfer device 1 having the double screw structure, It is preferable that the inner side (upper side in the drawing) of the side of the pinhole has as narrow a gap as possible with an interval enough for air (gas) to pass through. This may be for conveying the raw material smoothly in the transfer path 30. However, when the first rotary blade 12 and the inner surface of the conveyance path 30 are completely in contact with each other, the rotation of the first screw 10 may interfere with the rotation of the first rotary blade 12, Since the conveying path 30 may be damaged, it is preferable that the first rotating blade 12 and the inner surface of the conveying path 30 have a predetermined interval. Of course, the inner surface of the second rotary blade 22 formed on the second screw 20 and the conveying path 30 may be arranged to have the same or similar spacing.

Meanwhile, the conveying path 30 may be formed in various shapes. According to one example, the conveying path 30 may be simply formed in a rectangular shape. However, in this case, depending on the shape of the screw, which is generally realized as a cylindrical shape, a space such as an edge portion of the conveying path 30 may occur Which may interfere with smooth transport of raw materials and even heating.

Also, when the cross section of the conveying path 30 is formed as a simple circular shape, it may be difficult to realize the double screw structure as in the technical idea of the present invention. Therefore, an example of the preferred conveying path 30 for implementing the double screw structure according to the technical idea of the present invention will be described with reference to FIG.

4 shows an embodiment of a transfer path in a transfer device having a double screw structure according to an embodiment of the present invention.

4, the conveying path 30 includes a first conveying path 31 having the first screw 10 therein and a second conveying path 31 having the second screw 20 therein. (Not shown). At this time, the first transfer path 31 and the second transfer path 32 may communicate with each other to share the internal space. In other words, the first conveying path 31 and the second conveying path 32 may communicate with each other at the side where the first screw 10 and the second screw 20 face each other.

As described above, when the conveying path 30 is formed in a polygonal shape such as a rectangular shape, a dead zone in which the rotational force of the rotating blades of the screws can not be generated may occur, The second conveying path 32 may be preferably formed in a circular shape in cross section. That is, according to the embodiment of the present invention, the overall cross-sectional shape of the conveyance path 30 may be formed to have an ∞ shape.

It should be noted that the present invention is not limited thereto, and the present invention may be embodied in a dual screw structure in which the first screw 10 and the second screw 20 are provided. The shape of the conveying path 30 can be variously implemented as needed.

The transfer device 1 having the double screw structure may be included in the heating unit 120. For example, the transfer device 1 having the double screw structure may be provided in the above-mentioned melting unit 121 and / or the melting unit 122 of the heating unit 120, Can be implemented. The transfer device 1 having the double screw structure provided in the melting device 121 and the melting device 122 may be configured to have the same configuration as each other. However, according to an embodiment, A transfer device 1 having a screw structure may be provided in the melting device 121 and the melting device 122, respectively. In any case, when the heating unit 120 includes the melting device 121 and the melting device 122, the melting device 121 and the melting device 122 may be formed of the double screw structure And a conveying device (1). This will be described with reference to FIG.

Fig. 5 shows a schematic configuration of a heating unit according to an embodiment of the present invention.

Referring to FIG. 5, the heating unit 120 may include the melting device 121 and the melting device 122, as described above. In this case, the melting device 121 and the melting device 122 have different temperature intervals and can heat the raw material. According to the embodiment of the present invention, the first temperature The second temperature interval, which is the temperature interval of the melting apparatus 122, may be relatively high.

Hereinafter, the second temperature interval has a higher temperature than the first temperature interval, it means that the average temperature of the entire second temperature interval is relatively higher than the average temperature of the entire first temperature interval It can mean. However, this does not mean that the entire section of the second temperature interval always has a higher temperature than the highest temperature section of the first temperature section.

For example, the average temperature of the entire second temperature interval may be higher than the average temperature of the entire first temperature interval. However, in some of the second temperature intervals, the average temperature may be the same as the temperature of some interval of the first temperature interval. Or may have a similar temperature, and depending on the embodiment, the temperature of some section of the second temperature section may have a lower temperature than a section of the first temperature section.

For example, the first temperature interval may have a temperature range of between about 50 ° C and about 300 ° C, and the second temperature interval may have a temperature range of between about 250 ° C and about 700 ° C .

In other words, the first temperature interval and the second temperature interval may be a temperature at which the second temperature interval is relatively higher than the first temperature interval at the overall average temperature, but a part of each temperature interval may be a temperature Lt; / RTI >

The second temperature interval may have a temperature of at least 250 캜 and may be heated to about 700 캜 at the highest temperature interval. For example, the lowest temperature interval in the second temperature interval may have a temperature of about 260 ° C. The initial portion of the melting apparatus 122 heated to the second temperature range may be a portion into which the raw material that has been melted at the distal end of the melting apparatus 121 is fed, May be heated to the same or similar or lower temperature than the end of the melting device 121 (i.e., the highest temperature section of the first temperature section).

In the heating unit 120 shown in FIG. 5, the gas discharge portion where the fuel is vaporized and the gas is discharged is shown as being located in the middle section and the end section of the melting apparatus 122, no. It is possible to form a plurality of gas discharging portions, or only one gas discharging portion, as needed, and the gas discharging portion may be formed at the same time in the intermediate portion and the end portion as well as other positions of the melting device 122.

Also, depending on the embodiment, the gas exhaust portion may also be formed in the smoothing device 121. In this case, it is preferable that the gas exhaust part is formed in the end section of the melting device 121, which is heated to a relatively high temperature in the melting device 121, but the present invention is not limited thereto.

The gas discharged from the smoldering device 121 may be transferred to the condenser 130 to be condensed to produce oil. Alternatively, the gas discharged from the smoldering device 121 may burn waste gas to generate energy. Or may be transferred to a predetermined energy production system (not shown).

According to an embodiment of the present invention, the heating unit 120 heats the raw materials in stages using the melting apparatus 121 and the melting apparatus 122 having different temperature ranges, It is possible to prevent carbonization and achieve more efficient melting / melting.

According to an embodiment of the present invention, the melting device 121 included in the heating unit 120 is configured such that the raw material, which is transferred from the pre-processing unit 110 and introduced into one end portion, And can be melted while being transferred to the other end by the rotation of the screw 10 provided.

At this time, the melting device 121 can heat the raw material transferred from the inside according to the first temperature interval as described above.

According to the embodiment of the present invention, the first temperature interval is set at a temperature which is higher toward the terminal section from which the raw material melted along the feeding direction is discharged from the initial section into which the raw material is fed into the melting device 121, And can be heated.

The first temperature interval may be, for example, such that the temperature rises linearly along the conveying direction. However, according to an embodiment of the present invention, the first interval may be divided into at least two intervals, The temperature difference may be different for each of the sections. For example, when the demultiplexer 121 is divided into two sections, ie, an initial section and an end section, the temperature in the initial section may be relatively low compared to the temperature in the final section.

The raw material can be heated at a higher temperature from one end of the inlet section to the other end of the terminal section even when the section for dividing the melting device 121 is divided into a plurality of sections of three or more sections .

As described above, the temperature difference of the demarcating device 121 according to the conveyance direction may be required for more efficient deterioration. When the solid raw material is rapidly heated to a high temperature, the raw material may be carbonized before the raw material is melted. In the present invention, as the raw material is heated from the initial entry section to the end section This problem can be solved by heating the raw material at a temperature.

According to an embodiment, the first temperature interval may be implemented such that the lowest temperature interval is about 100 ° C and the maximum temperature interval is about 260 ° C. For example, the raw material is heated at a temperature of about 100 ° C. in the initial section, and the raw material is heated at a temperature of about 260 ° C. in the end section, and the raw material is fed along the feed direction in the melting device 121 It can be implemented so that it can be gradually demagnetized.

The raw material melted from the melting device 121 may be transferred to the melting device 122.

The melting device 122 can heat the raw material that has been melted by the melting device 121 at the second temperature interval as described above. For example, the lowest temperature section in the second temperature section may have a temperature of about 260 ° C to 300 ° C. The molten apparatus 122 may generate the gas by vaporizing the raw material by heating the molten raw material at the second temperature interval relatively higher than the first temperature range.

The vaporized raw material is discharged to the condenser 130 in a gaseous state, and is condensed in the condenser 130 to be liquefied, so that primary oil can be produced as described above.

As described above, the melting apparatus 122 has a second temperature interval relatively higher than that of the melting apparatus 121, so that the material melts more and becomes more softened than the inside of the melting apparatus 121 As a matter of course, the raw material may be vaporized into a gas to generate an organic gas.

The molten raw material in the melting apparatus 122 can be heated and vaporized while being conveyed in the conveying direction by a screw provided in the melting apparatus 122. At this time, depending on the amount of the raw material or the feed rate, the raw material may be transferred from the inlet section of the melting apparatus 122 to the end section of the melting apparatus 122, and a raw material that can not be vaporized or melted may remain.

Therefore, according to the present invention, the material to be melted in the melting apparatus 122 can be heated again while reciprocating in a predetermined section, thereby preventing the raw material from being untreated or being not melted. An embodiment of the transfer device 1 having a double screw structure for this purpose is shown in Fig.

6 shows an embodiment of a transfer device having a double screw structure according to another embodiment of the present invention.

For convenience of explanation, the melting apparatus 122 is also divided into a plurality of sections in the same manner as the above-described the above-mentioned melting apparatus 121. Further, the transfer device 1 having the double screw structure is also divided into the same sections as the melting device 121 and / or the melting device 122.

6, the end sections of the first screw 10 and the second screw 20 corresponding to the end sections of the melting apparatus 122 (i.e., the end sections of the transfer apparatus 1 having the double screw structure) (For example, 13, 23) may be formed. The reversing blades (for example, 13 and 23) refer to a rotary blade formed such that the rotational directions of the first and second rotary blades 12 and 22 are opposite to the rotational direction of the remaining section . That is, in the end section of the conveying apparatus 1 having the double screw structure, the first screw 10 and the second screw 20 are rotated in a predetermined direction, but the transfer direction of the end section and the remaining sections is reversed Direction.

For example, when the melting apparatus 122 is divided into three sections, the transfer direction in the entry section and the intermediate section may be opposite to each other. These intervals may be defined in various lengths according to the needs of the user, so that the reversing blades (e.g., 13, 23) may also be formed within various ranges as needed.

According to the technical idea of the present invention, when the raw material conveyed in the melting apparatus 122 reaches the end section, the raw material is returned to the intermediate section by the screw whose conveying direction is reversed in the end section .

At this time, the second temperature interval is not realized such that the temperature of the distal end portion is the highest as in the first temperature interval in the above-described device 121, and the temperature in the middle interval is the highest.

For example, when the melting apparatus 122 is divided into three sections, the temperature of the middle section may be relatively high compared to the temperatures of the inlet section and the end section. For example, the temperature of the inlet section and the terminal section may be about 300 ° C, and the temperature of the middle section may be about 300 ° C to 700 ° C.

Herein, the case where the plurality of sections are implemented as three sections is described as an example, but the scope of the present invention is not limited thereto, and it is needless to say that the sections may be divided into various sections as necessary.

In any case, by gradually changing the temperature for each section, it is possible to reduce the side effects such as soot and carbonization as much as possible and to smoothly melt the raw material as the raw material is rapidly heated.

Also, in the case of the melting apparatus 122, since the raw material can be returned to the middle section in the end section, the second temperature section is preferably determined so that the end section has a relatively lower temperature than the middle section can do.

In addition, as the feed direction is reversed in the end section as described above, there is an effect that the raw materials softened (melted) in the melting apparatus 122 are mixed and the efficiency of melting the softened fuels due to the immobilization is increased.

On the other hand, when the gas is condensed by the condenser 130, organic substances are accumulated in the plurality of gas flow paths provided in the plurality of condensers included in the condenser 130 to block the gas flow path, A choking phenomenon or a coking phenomenon in which the passage of the flow path is narrowed may occur (hereinafter referred to as a caulking phenomenon).

As described above, a plurality of gas flow paths into which the gas flows may be provided in the first condenser of the plurality of condensers, It is possible to cool the gas introduced into the gas flow paths by flowing cold water around the gas flow paths inside the plurality of condensers.

At this time, in the process of liquefying the gas, organic substances may accumulate in the gas flow path to clog the gas flow path, or the gas transfer path may be narrowed, thereby causing the caulking phenomenon.

If the coking phenomenon occurs, it may interfere with the smooth inflow of the gas, and there may be a risk of explosion due to an increase in internal pressure. Therefore, when the caulking phenomenon occurs, it is necessary to solve and / or alleviate the caulking phenomenon of the gas flow channel.

As described above, conventionally, in order to solve such a caulking phenomenon, a tank, a gas passage (pipe), etc. of the system are disassembled and cleaned, or the system is stopped and a separate cleaning liquid (for example, alkali, Or a surfactant, etc.) have been mainly used.

In such a conventional system, since the system must be stopped in any case, continuity in the emulsification process of the waste plastic is inevitably lowered, and there is a problem such as a decrease in efficiency and an increase in the incidental cost.

Therefore, the present invention provides the technical idea that the caulking phenomenon can be solved by using the primary oil generated by the condenser 130 during the process without stopping the emulsification process of the waste plastic, Can be solved.

For example, as described above, the condensed portion 130 may be fed through the pretreatment portion 110 and the heating portion 120, and the vaporized gas may be introduced into the condensed portion 130. At this time, each of the plurality of condensers may be connected to an inflow path for introducing the gas.

According to the embodiment of the present invention, not only the plurality of condensers are used all at once, but only the first condenser of the plurality of condensers, the gas can be introduced and condensed. For example, the flow path connected to the first condenser is opened to allow the gas to flow into the first condenser, and the flow path connected to the second condenser to allow the gas to flow into the second condenser, The emulsifying process of the present invention may proceed.

If the caulking phenomenon occurs in the gas flow path inside the first condenser, the waste plastic emulsification system 100 blocks the flow of the gas into the first condenser, and the gas flows into the second condenser Can be done.

The coking phenomenon of the first condenser can be eliminated while the condensation of the gas proceeds through the second condenser.

In this case, even if the coking phenomenon occurs in the first condenser, it is not necessary to stop the operation of the system for cleaning the first condenser, so that the continuous waste plastic emulsification process can proceed.

In addition, according to the technical idea of the present invention for this purpose, not the conventional method such as disassembling the first condenser in which the gas is no longer flowed from the heating unit 120, or inputting a separate cleaning liquid, The caulking phenomenon of the first condenser can be eliminated by using the emulsification process.

For example, a supply passage through which the primary oil stored in the oil tank described above can be supplied to the plurality of condensers is connected, and the primary oil flows into the first condenser in which the caulking phenomenon occurs, The caulking phenomenon can be solved by the oil.

The primary oil is stored in the oil tank and can be supplied to the condenser when the coking phenomenon occurs. Preferably, the primary oil is heated by the oil tank and heated The supply of the primary oil to the first condenser may be more effective in solving the coking phenomenon.

In this case, in order to heat the oil tank, the microwave transmitting apparatus 200 and the microwave heating type heating apparatus 300 according to the technical idea of the present invention can be used.

Meanwhile, in order to determine whether or not the gas flow path in the plurality of condensers has occurred, the waste plastic emulsification system 100 may include a flow rate sensing unit (not shown) capable of sensing the flow rate of the gas flow path .

According to one embodiment, the flow rate sensing unit (not shown) may be implemented as a predetermined sensor system capable of sensing the flow of gas. The flow of the gas may mean, for example, the flow rate of the gas and / or the amount of the gas flowing in a certain section.

The flow rate sensing unit (not shown) determines whether or not a caulking phenomenon occurs based on a change in the flow of gas inside the gas flow channel, which is changed when the gas flow channel 10 has a narrowed passage area due to a phenomenon of coking occurring in the gas flow channel It can be judged. The waste plastic emulsification system 100 can control whether or not the gas flows into / out of each of the plurality of condensers according to the determination result of the flow rate sensing unit (not shown).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (5)

In the waste plastic emulsification system,
A heating unit for heating a raw material containing waste plastic; And
And a condenser for condensing the gas generated from the raw material heated by the heating unit to generate a primary oil,
The heating unit includes:
Transportation path; And
And a conveying device provided in the conveying path and including a first screw and a second screw capable of conveying the raw material by a rotation of the rotary vane formed in a spiral manner on the axis by rotation of the shaft,
The first screw and the second screw may be formed of a metal,
Wherein a first rotary blade formed on the first screw and a second rotary blade formed on the second screw are alternately arranged such that a part of the first rotary blade is obscured by the second rotary blade,
The rotation direction of the rotary blade formed at each end section is formed to be opposite to the rotation direction of the rotary blade of the remaining section so that the transfer direction of the end section is opposite to the transfer direction of the remaining section Waste plastic emulsification system.
2. The apparatus according to claim 1,
A first transfer path in which the first screw is provided; And
And a second conveying path in which the second screw is provided,
The first conveying path and the second conveying path,
Wherein a side surface of the first screw and a surface of the second screw are communicated with each other.
delete The image forming apparatus according to claim 1,
And the inner surface of the first rotary blade and the second rotary blade and the transfer path are formed to have an interval within a predetermined transaction.
A transfer device for transferring a predetermined material,
Transportation path; And
And a first screw and a second screw which are provided in the transfer path and are formed so that the rotary blade formed in a spiral shape on the shaft by rotation of the shaft rotates and the material can be transferred,
The first screw and the second screw may be formed of a metal,
Wherein a first rotary blade formed on the first screw and a second rotary blade formed on the second screw are alternately arranged such that a part of the first rotary blade is obscured by the second rotary blade,
Wherein the end sections of the first screw and the second screw are formed such that the rotation direction of the first rotary blade and the second rotary blade is opposite to the remaining section and the transfer direction of the end section is the transfer direction of the remaining section So as to be in a direction opposite to the direction of the arrow.

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