KR102596791B1 - Waste plastic emulsification system with improved heating and reduction efficiency - Google Patents

Abstract

A waste plastic emulsification system with improved heating and reduction efficiency is disclosed. A waste plastic emulsification system with improved heating and reduction efficiency according to an embodiment of the present invention includes at least one transfer path through which raw materials including waste plastic are transferred, It includes a heating unit for heating the raw material, a control system for controlling heating of the heating unit, and a condensation unit for condensing gas generated from the raw material heated by the heating unit to generate primary oil, wherein the heating The unit includes a first transfer passage for softening solid raw materials in which at least a portion of the section is heated using a first heating method, and at least a portion of the section is heated using a second heating method to vaporize the softened raw material transferred from the first conveying passage. It includes a second transfer path and a third transfer path for generating the gas, and the second transfer path and the third transfer path each form an inclined structure so that the height of the distal end is higher by a predetermined height compared to the inlet part. It is characterized by having a bump to prevent the liquid in the transfer path from falling into the discharge port.

Description

Waste plastic emulsification system with improved heating and reduction efficiency and method {Waste plastic emulsification system with improved heating and reduction efficiency}

The present invention relates to a waste plastic emulsification system with improved heating and reduction efficiency. More specifically, in a waste plastic emulsification system that produces oil by heating and heat-treating raw materials containing waste plastic, high frequency induction is used to heat the raw materials. By using a heating method together with a microwave heating method using a microwave-sensitive heating device that generates heat in response to microwaves, solid raw materials are softened relatively quickly through a high-frequency induction heating method, and then in the sensitization/melting process. It is about a technical idea that improves the efficiency of the waste plastic emulsification system and produces high-purity carbon sludge by reducing power consumption through microwave heating.

Technological ideas for recycling and using waste plastic or generating renewable energy from waste plastic are being actively researched.

In general, the conventional waste plastic emulsification system for chemical recycling by pyrolyzing waste plastic is composed of a heating furnace and a gas classification tank that crush solid waste plastic through a shredder and apply heat to the pulverized waste plastic. A method of melting and then thermally decomposing is used.

In the case of thermal decomposition of waste plastic in this way, oil can be produced from waste plastic by heating the raw material (i.e., waste plastic) and vaporizing it into various organic gases (gases), and then condensing and softening the gases for each type.

At this time, in the heating furnace in which the raw material is heated, conventionally, induction heating using a heating material that converts electrical energy into thermal energy, especially an electric coil, is widely used to quench or melt the raw material by heating the heating furnace. .

However, when using an electric coil like this, relatively fast heating is possible, but there is a problem in that electricity consumption is large and costs increase accordingly. As a result, the burden of using induction heating in all processes may increase.

Meanwhile, recently, microwave-sensitive heating devices that can generate heat in response to microwaves have become known. These microwave-sensitive heating devices can be molded into various shapes and have excellent thermal shock resistance and heat generation characteristics, while consuming relatively very little power compared to conventional electric coils, etc., so their use is gradually increasing.

However, the microwave heating method using this microwave-sensitive heating device has a slower heating rate than the above-mentioned induction heating, so it takes a lot of time to soften the solid raw material to enable attenuation/melting in the initial process. There is a problem that may cause slowdown.

Therefore, there is a need for a technical idea that can greatly improve the efficiency of the waste plastic emulsification system by appropriately using the high-frequency induction heating method, which consumes relatively large amounts of power but allows relatively rapid heating, and the microwave heating method, which consumes relatively little power. .

In addition, if the sludge generated during the attenuation/melting process of raw materials contains high-purity carbon, various recycling (e.g., rubber production, etc.) is possible, but oil vapor cannot be discharged to the outside or converted to a gaseous state within the transfer path. In this case, when liquid containing oil is burned in the transfer path or included in sludge, there is a problem that the quality of oil vapor is lowered or sludge of low quality in terms of carbon purity is discharged, so a technical idea to solve this problem is required.

In addition, each plastic produced as a raw material must be pyrolyzed at a temperature suitable for pyrolytic reduction to obtain high-quality recycled oil. However, waste plastic, which is the raw material for the emulsification system for emulsification, contains different types of plastic mixed together, and there is a problem in that each type of plastic has different thermal properties. For example, a large amount of waste plastic mixed with different thermal properties such as melting point, ignition point, and thermal decomposition temperature (e.g., polypropylene, polyimide, polyethylene, polycarbonate, polyamide, PVC, etc.) is put into the heating furnace. If possible, it may be important to ensure that thermal decomposition occurs at an appropriate temperature for each type of plastic.

In addition, if a constant airflow is not formed within the heating furnace, the oil vapor generated through thermal decomposition may be carbonized in the heating furnace, which can significantly lower the quality of the recycled oil and lead to a decrease in production.

Korean registered patent (registration number 10-1026202, “Thermal decomposition emulsification device for waste plastic”)

Therefore, the technical problem to be achieved by the present invention is to increase the efficiency of the waste plastic emulsification system by appropriately using the high-frequency induction heating method, which consumes relatively large amounts of power but allows relatively rapid heating, and the microwave heating method, which consumes relatively little power. It provides technical ideas that can greatly improve.

In addition, it provides technical ideas for preventing combustion or inclusion of oily liquid raw materials in sludge within the transfer path and increasing attenuation/melting efficiency.

In addition, it provides a technical idea that can produce high-quality recycled oil even when waste plastic mixed with different types of plastic is input as a raw material.

In addition, it provides a technical idea that can reduce the phenomenon of oil vapor being carbonized inside the heating furnace when the generated oil vapor is not discharged smoothly.

A waste plastic emulsification system with improved heating and reduction efficiency according to an embodiment of the present invention for achieving the above technical problem includes at least one transfer path through which raw materials including waste plastic are transferred, and a heating device for heating the raw materials. and a control system for controlling heating of the heating unit, and a condensing unit for generating primary oil by condensing gas generated from the raw material heated by the heating unit, wherein at least some areas of the heating unit are The first transfer passage and at least a portion of the zone for softening the solid raw material heated and introduced by the first heating method are heated by the second heating method to vaporize the softened raw material transferred from the first conveying passage to generate the gas. It includes a second transfer path and a third transfer path for It is characterized by having a bump to prevent the liquid from falling into the discharge port.

The waste plastic emulsification system with improved heating and reduction efficiency connects the first transfer path and the second transport path and moves the softened raw material softened in the first transport path to the second transport path. It further includes a passage and a gas line for injecting a predetermined gas into a predetermined position on the first movement passage, wherein the gas line continuously injects the gas during the operation time when the heating unit starts operating. You can do this.

The waste plastic emulsification system with improved heating and reduction efficiency further includes a gas line for injecting a predetermined gas into a predetermined position at the beginning of the second transfer path, and the gas line operates when the heating unit begins to operate. It may be characterized by continuously injecting the gas over time.

The gas may be injected in an amount of 1% to 10% of the volume of the raw material per hour.

Each of the second transfer path and the third transfer path is divided into a plurality of zones whose heating can be individually controlled, and each zone has a gradually higher temperature section from the initial section to the end section along the transfer direction. Heating is performed so that the area corresponding to the entrance section of the third transfer path is heated to have a higher temperature section than each section of the second transfer path.

The control system selectively operates one of a plurality of operation modes, and the temperature section of each of the plurality of zones included in each of the second transfer path and the third transfer path is set differently for each of the operation modes. It can be characterized as:

The plurality of operation modes may be respectively set according to a plurality of raw material types.

According to another aspect, a waste plastic emulsification system with improved heating and reduction efficiency includes at least one transfer path through which raw materials including waste plastic are transferred, a heating unit for heating the raw material, and controlling heating of the heating unit. It includes a control system for generating primary oil by condensing the gas generated from the raw material heated by the heating unit, wherein at least a portion of the heating unit is heated to soften the input solid raw material. and at least one transfer passage for generating the gas by vaporizing the softened raw material transferred from the first transfer passage by heating at least a portion of the passage, and at least one of the at least one transfer passage. One may be characterized by forming an inclined structure so that the height of the distal part is higher by a predetermined height compared to the inlet part, and providing a bump to prevent the liquid in the transfer path from falling into the discharge port.

According to another aspect, a waste plastic emulsification system with improved heating and reduction efficiency includes at least one transfer path through which raw materials including waste plastic are transferred, a heating unit for heating the raw material, and controlling heating of the heating unit. and a control system for producing primary oil by condensing the gas generated from the raw material heated by the heating unit, wherein the heating unit includes a plurality of zones in which heating can be individually controlled. It includes at least one transfer path divided into, and each zone is heated to have a gradually higher temperature section from the entrance section to the end section along the transfer direction, and the control system operates in one of a plurality of operation modes. One may be operated selectively, and the temperature section of each of the plurality of zones included in each of the at least one transfer path may be set differently for each of the operation modes.

According to the technical idea of the present invention, the efficiency of the waste plastic emulsification system can be greatly improved by appropriately using the high-frequency induction heating method, which has relatively high power consumption but allows relatively rapid heating, and the microwave heating method, which has relatively low power consumption. This has the effect of increasing the amount of raw materials that can be processed at one time, making it possible to enlarge the waste plastic emulsification system.

In addition, there is an effect of preventing combustion of oily liquid and/or inflow into sludge through the formation of an inclined structure and bumps in the transfer path and increasing attenuation/melting efficiency.

In addition, even when waste plastic mixed with different types of plastic is input as a raw material, an easily customized heating process can be selectively performed, which has the effect of producing high-quality recycled oil.

In addition, a phenomenon in which oil vapor generated from thermal decomposition is not smoothly discharged by artificially forming an air current inside the heating furnace by continuously injecting a predetermined gas into the heating furnace during operation of the heating furnace causes oil vapor to carbonize inside the heating furnace. It has the effect of reducing.

In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.
Figure 1 shows a schematic configuration of a continuous waste plastic emulsification system according to an embodiment of the present invention.
Figure 2 shows a schematic configuration of a heating unit according to an embodiment of the present invention.
Figure 3 is a diagram for explaining a heating method to be applied to the heating unit according to an embodiment of the present invention.
Figure 4 is a diagram for explaining the double screw structure of a transfer path according to an embodiment of the present invention.
5 and 6 show a schematic configuration of a heating unit according to another embodiment of the present invention.
Figure 7 schematically shows a microwave transmitting device and a microwave-sensitive heating device according to an embodiment of the present invention.
Figure 8 shows a schematic configuration of a control system according to an embodiment of the present invention.
Figure 9 shows a schematic configuration of a preprocessing unit according to an embodiment of the present invention.
Figure 10 is a diagram for explaining operating modes according to an embodiment of the present invention.
Figure 11 is a diagram showing the results of component analysis of sludge discharged through a system according to an embodiment of the present invention.

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member.

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

Referring to FIG. 1, a continuous waste plastic emulsification system 100 (hereinafter referred to as an emulsification system) according to an embodiment of the present invention includes a heating unit 120. The emulsification system 100 may further include a control system 150 for controlling whether to heat and/or the heating temperature of the condensing unit 130, the purifying unit 140, and/or the heating unit 120. there is.

Raw materials containing waste plastic may be pulverized through the pretreatment unit 110, foreign substances containing iron may be removed, and then may be introduced into the heating unit 120 with moisture removed. The configuration of the preprocessing unit 110 for this purpose is shown in FIG. 9.

Figure 9 shows a schematic configuration of a preprocessing unit according to an embodiment of the present invention.

Referring to FIG. 9, the preprocessing unit 110 according to an embodiment of the present invention is used in a crusher/crusher 111 for crushing the raw material (raw material containing waste plastic) in a solid state. It may include a magnetic drum 112 and a drying device 113 for removing iron-containing foreign substances from the pulverized raw materials. Foreign substances made of iron, not plastic, can be removed from the magnetic drum 112.

In this way, the raw material from which iron-containing foreign substances have been removed from the magnetic drum 112 is transferred to the drying device 113 to remove moisture. At this time, the drying device 113 can dry the raw material using warm air, for example.

And a heating process of the transfer paths included in the heating unit 120 can be performed. The raw material transported along the transport paths may be heated and melted and/or melted.

According to one embodiment of the present invention, in order to prevent air contact with the raw material during the continuous process, oxygen may be removed in advance by filling a predetermined gas (eg, nitrogen) in the raw material transfer path. If air is contacted during the transfer process of the raw material or the oxygen ratio is high, there is a risk of explosion when the raw material is heated through the heating unit 120, which will be described later, and the air layer (oxygen) in the transfer path is removed. may be important.

Meanwhile, according to the technical idea of the present invention, the heating unit 120 can be divided into a softening unit for heating and softening the raw material that is pulverized and input in a solid state, and a vaporizing unit for heating and vaporizing the softened fuel again. there is. In this specification, the softening unit and the vaporizing unit do not necessarily mean any separate components or devices, but may be meant to distinguish a plurality of transfer paths provided for heating and transferring raw materials for convenience. Of course, depending on the implementation, the softening unit and the vaporizing unit may be implemented as separate devices.

In addition, in this specification, softening of the raw material may mean that the raw material is softened by heating and changes into gel-like physical properties.

According to one embodiment, the softening unit and/or the vaporizing unit may each include a transfer path through which the raw material can be heated and transferred. For example, the softening unit may be configured to include a first transfer path 121, and the vaporizing unit may include at least two transfer paths, that is, a second transfer path 122 and a third transfer path 123. It can be configured. The configuration of the heating unit 120 will be described with reference to FIG. 2.

The heating unit 120 according to an embodiment of the present invention may have the feature of forming an inclined structure of the transfer path and preventing combustion of oily liquid and/or inflow into sludge through a bump. Through these characteristics, if the oil liquid is burned in the transfer path or flows into sludge (residue), the quality of not only the oil vapor but also the carbon purity of the sludge can be significantly lowered, so this problem can be solved. This feature can be achieved by having an inclined structure so that the transfer path becomes higher in the transport direction and at the same time forming a bump at the front end of the outlet of the transport path.

In addition, the heating unit 120 is provided with a plurality of zones in which heating can be individually controlled in each transfer path, and the heating process for each zone uses waste plastic mixed with different types of plastic as a raw material. It has the feature of producing high-quality recycled oil by selectively determining the operation mode so that it can be easily customized even when input.

In addition, by continuously injecting a predetermined gas (e.g., nitrogen) into the heating furnace while operating the heating furnace, an air current is artificially formed inside the heating furnace, so that when oil vapor generated from thermal decomposition cannot be discharged smoothly, It has the characteristic of reducing the carbonization of oil vapor.

The structure of the heating unit having these characteristics is explained as follows.

Figure 2 shows a schematic configuration of a heating unit according to an embodiment of the present invention.

Referring to FIG. 2, in the emulsification system 100 according to an embodiment of the present invention, the heating unit 120 includes a first transfer path 121, a second transfer path 122, and a third transfer path 123. It may be configured to include. As described above, the first transfer path 121 is a softening unit for quickly softening solid raw materials, and the second transfer path 122 and the third transfer path 123 continuously heat the softened raw materials. It can be divided into a vaporization section for vaporization while doing so.

In the drawing, the heating unit 120 is shown to include a total of three transfer paths, that is, the first transfer path 121, the second transfer path 122, and the third transfer path 123, but the present invention This is not necessarily limited to this. For example, the softening unit may be provided with a plurality of transfer paths, the vaporization unit may be provided with only one transfer path, or the vaporization unit may be provided with three or more transfer paths. Even in this case, it can be easily inferred by an average expert in the technical field to which the present invention belongs that the technical idea of the present invention, which will be described later, can be equally applied. Hereinafter, as described above, in this specification, the heating unit 120 is provided with three transfer paths, that is, the first transfer path 121, the second transfer path 122, and the third transfer path 123. Let us explain using an example.

The first transfer path 121, which is divided into the softening section, allows the raw material introduced in a solid state to be softened as quickly as possible, and then the vaporization section, that is, the second transfer path 122 and the third transfer path ( 123), the softened raw material can be continuously heated and vaporized to collect gas for producing primary oil. To this end, at least a portion of the first transfer path 121 may be heated by a predetermined first heating method, and at least a portion of the second transfer path 122 and/or the third transfer path 123 may be heated. Some zones may be heated by a second heating method different from the first heating method.

In one embodiment, the first heating method may be a high-frequency induction heating method using high-frequency induction, and the second heating method may be a microwave heating method using microwaves.

According to another embodiment, the first transfer path 121 performs heating using a high-frequency heating method, the second transport path 122 performs heating using a kanthal (or heater) method, and the third transport path 123 You can also use the microwave heating method. Various embodiments may be possible.

High-frequency induction heating uses electromagnetic induction to flow alternating current through a coil to generate alternating magnetic flux, thereby causing induced current (eddy current) to flow in the object to be heated. This induced current generates Joule heat, which is used to heat the object. It can mean being carried out. Since the technical idea related to such high-frequency induction heating is already widely known, detailed description will be omitted in this specification. Hereinafter, for convenience of explanation, in this specification, a method of performing heating using electromagnetic induction generated by flowing current through a coil will be referred to as a high-frequency induction heating method.

In the case of such a high-frequency induction heating method, it may be possible to heat the object to be heated more rapidly than other methods, and may be suitable for the softening unit to soften solid raw materials relatively quickly. However, in the case of high-frequency induction heating, energy consumption is relatively large compared to the microwave heating method using microwaves, which will be described later, conventional band heaters, and other heat sources, but it has excellent heating efficiency and allows rapid heating as described above. This can have the effect of improving the overall efficiency of the waste plastic emulsification process.

For such high-frequency induction heating, although not shown in the drawing, the first transfer path 121 may be previously equipped with a coil for electromagnetic induction. Additionally, a power system may be provided to send current to the coil. Since the power system for induction heating is already known, further detailed description will be omitted.

Meanwhile, the vaporization unit, that is, the second transfer path 122 and the third transfer path 123, may be heated in a different way from the softening unit, that is, the first transfer path 121.

According to one embodiment, a microwave heating method using microwaves may be applied to the second transfer path 122 and the third transfer path 123. Hereinafter, in this specification, as will be described later for convenience of explanation, a method of heating a certain object to be heated (e.g., transfer paths) using a certain microwave-sensitive heating device and/or a microwave transmitter is described as microwave. It should be called a heating method.

To this end, the second transfer path 122 and the third transfer path 123, that is, the vaporization unit, may be equipped with a microwave-sensitive heating device and a microwave transmitting device.

The microwave transmitting device may be controlled by the control system 150, and the microwave-sensitive heating device reacts and heats by the microwave transmitted from the microwave transmitting device, and the microwave-sensitive heating device is heated. The second transfer path 122 and/or the third transfer path 123 may each be heated by a heat generating device. This microwave method will be described again later.

The heating unit 120 connects the respective transfer passages 121, 122, and 123 and may be provided with a first movement passage 30 and a second movement passage 31 that serve as movement passages for raw materials.

The first transfer passage 30 connects the outlet of the first transfer passage 121 and the inlet of the second transfer passage 122, and transfers the softened raw material softened in the first transfer passage 121 to the above. It can be moved to the second transfer path 122.

The second transfer passage 31 connects the outlet of the second transfer passage 122 and the inlet of the third transfer passage 123, and transfers the raw material heated in the second transfer passage 122 to the third transfer passage. It can be moved to furnace (123).

And according to the technical idea of the present invention, the heating unit 120 of the emulsification system 100 has gas lines 40 and 41 that can supply gas to a predetermined position of the heating unit 120 from a predetermined gas supply source. More may be included.

Meanwhile, according to an embodiment of the present invention, before operating the heating unit 120 of the emulsification system 100, air can be discharged from the inside of the heating furnace and then the heating unit 120 can be operated. To this end, the heating furnace can be operated after injecting a predetermined gas (eg, nitrogen) and filling the heating furnace with the gas.

This means that if oxygen exists inside each transfer path of the heating unit 120, a large amount of waste gas may be produced by combining with oil vapor or carbon in plastic, the quality of the recycled oil may deteriorate, and the recycled oil may turn black. Because it can be.

In addition, when the transfer passages are filled with a single-molecule gas (e.g., nitrogen), air currents may not be formed well within the transfer passages (122, 123). In this case, the generated oil vapor is not discharged to the top and flows into the heating furnace. Carbonization may occur within the material.

To this end, according to the technical idea of the present invention, a small amount of gas (for example, nitrogen) is continuously injected into the emulsification system 100 to form an artificial air current so that the generated oil vapor can be easily discharged.

According to one example, when an amount of 1 to 10% of the volume of the raw material was continuously added per hour, the discharge of oil vapor was smoothest and the quality of the recycled oil could be improved through this.

Additionally, by injecting the same gas (eg, nitrogen) as the gas introduced before operating the heating furnace, the risk of gases of different types reacting can be reduced.

Although the gas is nitrogen as an example, it is not limited thereto, and a gas with low reactivity can be used.

For this purpose, the emulsification system 100 may be equipped with a gas tank or a gas generator, and gas lines 40 and 41 connecting the gas tank or gas generator and a predetermined position of the heating unit may be provided.

The predetermined position may be a predetermined position on the first movement passage 30, and the gas line 40 may be connected to a position where the gas can be injected into the first movement passage 30. According to another embodiment, the predetermined location may be the beginning of the second transfer path 122. For example, in the drawing, the left side of the second transfer path 122 may be connected to the gas line 41, and the gas lines 40 and 41 continuously supply the gas during the operating time when the heating unit begins operating. can be injected.

The gas lines 40 and 41 are connected to the inlet of the first transfer passage 30 and/or the second transfer passage 122, so that the first transfer passage 121 generates oil vapor, that is, gas. This is because it is effective to artificially create an airflow by injecting gas at the front end of the second transfer path 122. Of course, an airflow may also be formed in the third transfer path 123 by the gas injected through the gas lines 40 and 41.

Meanwhile, a high-frequency induction heating method applied to the softening unit, that is, the first transfer path 121, and a microwave applied to the vaporization unit, that is, the second transfer path 122 and the third transfer path 123. As described above, each method has its own characteristics and advantages and disadvantages. This will be briefly explained with reference to FIG. 3.

Figure 3 is a diagram for explaining a heating method to be applied to the heating unit according to an embodiment of the present invention.

First, Figure 3a is a diagram for explaining a heating method using microwaves. As will be described later, the microwave-sensitive heating device provided on the surface of the transfer path or the housing 124 is first heated, thereby heating the surface of the transfer path or the housing ( 124) is heated, and as a result, the inside of the transfer path is heated, so that the raw materials transferred inside can be heated.

In the case of the high-frequency induction heating method shown in FIG. 3b, heat can be induced not only on the surface of the transfer path or the housing 124 but also on the internal steel material 125, so that the heat generation surface area can be relatively large. Therefore, the high-frequency induction heating method enables relatively rapid heating compared to the method using microwaves, and thus can have the effect of softening a large amount of raw materials in a relatively quick time.

However, as described above, the high-frequency induction heating method consumes more energy than the microwave method, so there is a risk that the overall process efficiency of the waste plastic emulsification system 100 may be reduced.

Therefore, the present invention applies a high-frequency induction heating method capable of relatively rapid heating to the softening unit, that is, the first transfer path 121, where the raw material in the solid state is first introduced into the heating unit 120, so that the raw material in the solid state is relatively quickly heated. The vaporization unit, that is, the second transfer path 122 and the third transfer path 123, where the raw material is softened and the subsequent process (e.g., attenuation/melting process) is performed, uses a microwave method that consumes relatively little energy. By applying , the efficiency of the entire process of the waste plastic emulsification system 100 can be greatly improved.

Meanwhile, according to the technical idea of the present invention, the heating unit 120 has the effect of heating the raw material through processes having different temperature sections, thereby enabling softening and attenuation/melting of the raw material more smoothly and efficiently. You can.

In this specification, melting may mean a process of heating and softening a solid raw material, or a process of heating a gel-like raw material softened to a certain level at a relatively low temperature range. For example, melting of the raw material may be performed in the first transfer path 121 and the second transfer path 122, or may refer to a process performed in the second transfer path 122.

Additionally, melting may refer to a process of reheating the thawed (softened) raw material at a relatively high temperature range. For example, when the raw material melted in the second transfer path 122 of the softening unit and/or the vaporization unit is transferred to the third transfer path 123 of the vaporization unit to be melted, the third transport path 123 is It can be heated in a temperature section that is relatively high compared to the second transfer path 122. In this case, the melted raw material may be in a relatively more softened or softened state compared to the melted raw material.

In this case, as shown in the figure, in the second transfer path 122 where melting progresses, among the raw materials with various components, the raw materials with relatively low melting points are vaporized first and sent to the condensation unit 130. can be supplied. And, as the third transfer path 123 is heated at a higher temperature section than the second transfer path 122 and melting proceeds, even the raw materials with relatively high melting points among the raw materials are vaporized and formed in the condensation unit 130. ) Gas can be supplied.

Differentiating the temperature range for each process like this may be to prevent raw materials with relatively low melting points among the softened fuel from being carbonized without being vaporized due to rapid heating.

Meanwhile, each of the transfer paths 121, 122, and 123 may include a plurality of zones Z1 to Z10 whose temperature can be individually controlled. In one embodiment, the first transfer path 121 includes two zones (Z1, Z2), and the second transfer path 122 includes four zones (Z3, Z4, Z5, Z6), and 3Transfer path 123 may include four zones (Z7, Z8, Z9, Z10).

Separate heating means (high-frequency heating, heater, and/or microwave) may be provided for each zone, and individual temperature control for each zone may be possible by controlling the separate heating means by a control system.

Additionally, the emulsification system 100 may provide a plurality of operation modes, and different temperature sections may be preset for each zone according to each operation mode.

This is because, on the other hand, each plastic must be thermally decomposed at a temperature suitable for thermal decomposition reduction in order to obtain high-quality recycled oil. Waste plastic, which is the raw material for the emulsification system for emulsification, contains a mixture of different types of plastic. There is a problem that they have different thermal characteristics. For example, a large amount of waste plastic mixed with different thermal properties such as melting point, ignition point, and thermal decomposition temperature (e.g., polypropylene, polyimide, polyethylene, polycarbonate, polyamide, PVC, etc.) is put into the heating furnace. If possible, it may be important to ensure that thermal decomposition occurs at an appropriate temperature for each type of plastic.

Therefore, operation modes corresponding to each other may be set according to a plurality of raw material types. For example, if the raw material is primarily waste fishing line, the emulsification system 100 may be set to operate in the first operation mode. For example, if the raw material is primarily waste tires, the emulsification system 100 may be set to operate in the second operation mode. Any one of a plurality of operating modes can be selected depending on the main ingredient of the other raw material, and the emulsification system 100 may have a temperature range for each zone (Z1 to Z10) suitable for the main ingredient preset. You can.

Of course, the temperature section for each zone (Z1 to Z10) may be set differently for each of the different operating modes.

The fact that the temperature range is set differently for each zone (Z1 to Z10) does not necessarily mean that all of the zones (Z1 to Z10) must be set differently for each operating mode, and at least one of the zones (Z1 to Z10) must be set differently. This may mean that more than one temperature section is set differently.

The emulsification system 100 may be provided with a predetermined interface (e.g., dashboard, button, etc.) that can be selected by the operating entity, and the operating entity can select one of a plurality of operating modes through the interface. . Then, the heating unit 120 can be heated and operated according to the temperature range for each zone (Z1 to Z10) set in the selected operation mode.

Therefore, by checking the type of raw material and selecting the corresponding operation mode, the operator can easily produce high-quality recycled oil without having to individually set the temperature range for each zone (Z1 to Z10) suitable for each raw material. .

Depending on the implementation, the second transfer path 122 included in the vaporization unit may be classified as a melting device, and the third transfer path 123 may be classified as a melting device. Hereinafter, in this specification, the case where the second transfer path 122 is classified as the melting device and the third transfer path 123 is classified as the melting device will be described as an example, and the respective names can be used interchangeably. The scope of rights of the present invention is not necessarily limited thereto. For example, depending on the implementation, the second transfer path 122 may be classified as the melting device, and the third transfer path 123 may be classified as the melting device.

Meanwhile, as described above, the heating unit 120 may be implemented to have different temperature sections for each transfer path through which each process progresses, but even in one transfer path, the heating unit 120 may be implemented to have different temperature sections. It can also be implemented to have .

Hereinafter, in this specification, saying that a specific temperature section (e.g., a second temperature section) has a higher temperature than another temperature section (e.g., a first temperature section) means that the temperature is higher than the average temperature of the entire first temperature section. This may mean that the average temperature of the entire second temperature section is relatively high. However, this does not necessarily mean that the entire section of the second temperature section 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 section may be higher than the average temperature of the entire first temperature section, but in some sections (zones) of the second temperature section, some sections (zones) of the first temperature section ( may have the same or similar temperature as the temperature of the zone, and depending on the implementation example, the temperature of some sections (zones) of the second temperature section may have a lower temperature than some sections (zones) of the first temperature section. It may be possible.

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

In other words, the first temperature section and the second temperature section may have a relatively higher temperature than the first temperature section in the overall average temperature, but a portion of each temperature section overlaps with each other. can be heated.

For example, the second temperature section may have a temperature of at least 250°C or higher, and the highest temperature section may be heated to about 600°C to 700°C. In this case, the lowest temperature section in the second temperature section may have a temperature of about 260°C. In one example, the second temperature section may be a temperature section applied to the third transfer path 123, which is classified as a melting device among the vaporization units. At this time, the inlet part of the third transfer path 123 may be the part where the raw material melted at the end of the above-described melting device, that is, the second transfer path 122, is input, and accordingly, the third transfer path 123 ) may be heated to a temperature that is the same as, similar to, or lower than the distal end of the second transfer path 122 (i.e., the highest temperature section of the first temperature section).

Meanwhile, as described above, the heating unit 120 heats the raw materials step by step by having different temperature sections for each transfer path and/or each zone (e.g., Z1 to Z10) in each transfer path. By doing so, rapid carbonization of the raw material can be prevented and more efficient attenuation/melting can be achieved.

For example, as shown in FIG. 2, the heating unit 120 sequentially passes through the first transfer path 121, the second transfer path 122, and the third transfer path 123. It can be implemented so that raw materials are transported. At this time, in each transfer path, the heating temperature range can be varied for each zone (for example, Z1 to Z10) so that the raw materials can be heated in stages. This step-by-step heating has the effect of allowing plastics with relatively low thermal decomposition temperatures to be stably vaporized first.

According to one embodiment, the softening unit included in the heating unit 120, that is, the first transfer path 121, is where the raw material transferred from the above-described pre-processing unit 110 and introduced into one end is the first transfer path 121. 1 It can be softened (or melted) while being transferred to the other end by the rotation of the screw provided inside the transfer path 121. In this case, a high-frequency induction heating method can be used in the first zone (Z1) and the second zone (Z2) of the first transfer path 121 shown in FIG. 2, and the solid raw material is quickly softened (or quenched). Afterwards, it can be transferred to the second transfer path 122 for processing. In one example, the front end of the first zone (Z1) and the second zone (Z2) of the first transfer path 121 may represent a section where air is injected to remove impurities from the input solid raw material.

In addition, the second transfer path 122, where melting takes place, is divided into four zones (e.g., Z3 to Z6) as shown in the figure and can be heated at a different temperature for each zone, and the third transfer path 122, where melting takes place, is similarly divided into four zones (e.g., Z3 to Z6). The transfer path 123 may also be heated to have a different temperature range for each zone (eg, Z7 to Z10).

In one embodiment of the present invention, the area included in the softening unit, that is, the temperature section of the first zone (Z1) and the second zone (Z2) of the first transfer path 121, is a temperature section where the raw material in a solid state is softened ( or melting) may have a temperature sufficient to cause melting. For example, in the first transfer path 121, the raw material is heated to a temperature range where it can be softened, but the temperature range may be such that the softened raw material is not vaporized. Of course, depending on the implementation, the temperature range in which the first transfer path 121 is heated may be sufficient as long as the raw material can be softened in a solid state.

And the zones included in the vaporization unit (eg, Z3 to Z10) may be sequentially heated to have a high temperature section. That is, in the second transfer path 122 for melting, heating is performed to have a gradually higher temperature section from the initial section to the end section along the transfer direction, and in the third transfer path 123 for melting, heating is performed at the entrance section. It can be implemented to be heated to have a relatively high temperature section from the beginning of the section compared to each section of the second transfer path 122, and to be heated to a higher temperature section toward the end section.

Depending on the implementation example, each transfer path of the vaporization unit, that is, the 6th zone (Z6), which is the terminal section of the second transfer path 122, and the 10th zone, which is the terminal section of the third transfer path 123 ( Z10) may each be implemented to have a relatively low temperature section compared to the front section.

This may be for proper agitation of the softened raw material transported within each transfer path and to prevent carbonization of the raw material through this. In this case, the screw inside at least one of each transfer path is implemented to include a rotary blade formed so that the rotation direction of a portion of the distal section is opposite to the rotation direction of the remaining section, so that the raw material transferred from any of the transfer paths to the distal section By going back through some sections in sections where the direction of rotation is reversed, it is possible to prevent as much fuel that has not yet been vaporized or softened as possible. The configuration for this is shown in Figure 4.

Figure 4 is a diagram for explaining the double screw structure of a transfer path according to an embodiment of the present invention.

Referring to FIG. 4, all or some of the transfer paths 121, 122, and 123 may be equipped with screws as shown in FIG. 4. The end section of the first screw 10 and the second screw 20 corresponding to the end section of each of the transfer paths 121, 122, and 123 (i.e., the end of the transfer device 1 having a double screw structure) Section), reverse rotary blades (eg, 13, 23) may be formed. The reverse rotary blades (e.g., 13, 23) may mean rotary blades formed so that the rotation direction of the first rotary blade 12 and the second rotary blade 22 is opposite to the rotation direction of the remaining section. You can. That is, in the end section of the transfer device 1 having the double screw structure, the first screw 10 and the second screw 20 rotate in a certain direction, but the transfer directions of the end section and the remaining sections are opposite. It can be implemented to be directional.

For example, when the second transfer path 122 is divided into three sections, the transfer direction at the beginning section and the middle section may be opposite to the transfer direction at the end section. These sections can be set to various lengths depending on the user's needs, and accordingly, the reverse rotary blades (eg, 13 and 23) can also be formed within various ranges as needed.

According to the technical idea of the present invention, when the raw material transported within the transfer path reaches the end section, the raw material can be returned to the middle section by a screw in which the transfer direction is reversed in the end section.

Additionally, an outlet (eg, 122-1) through which raw materials are discharged may be provided before the end section of each of the transfer paths 121, 122, and 123. Additionally, a stopper (eg, 122-2) may be provided at the front of the discharge port 122-1 for each transfer path to prevent the oil liquid from being discharged. Through this bump (e.g., 122-2), it is possible to ensure that only the solid sludge is discharged rather than the oily liquid being discharged in the next transfer path or sludge.

Oily liquid may occur when oil vapor cannot be discharged and remains in the transfer path, and if such oil vapor is continued to be heated without combustion, carbonization may occur and the carbon purity of the sludge may increase. Sludge with high carbon purity can be very useful as it has a variety of recycling sources. However, if this oil liquid phase passes to the next high-temperature transfer path, combustion may occur, which may lower the quality of the recycled oil, and the quality of the carbon purity of the sludge may also decrease. Of course, even when the oil liquid phase is included in the sludge, there is a problem of generating sludge of low quality in terms of carbon purity because the oil liquid phase is not sufficiently carbonized.

Therefore, this problem can be solved by providing the bump (e.g., 122-2), and as will be described later, the terminal section of the second transfer path 122 and/or the third transfer path 123 is moved to a higher position. The use of an inclined structure that points towards the surface has the effect of preventing more oily liquid from being discharged from the transfer channels.

On the other hand, rather than completely dissolving and entering a liquid state when heated, raw materials including waste plastic are softened and transported in a gel state through a attenuation/melting process as described above. In addition, due to the nature of plastic, the thermal conductivity is relatively very low, so it is difficult for the raw material being transported to attenuate/melt evenly, and it is easy to solidify again in a softened state, so it sticks to the inner surface of the transport path or solidifies while sticking to the screw, etc. There may be a risk that the transfer itself may be blocked.

Therefore, as described above, the fuel is returned to a certain level in the opposite direction of the transfer direction at the end section of the transfer path, and is allowed to travel back and forth for a predetermined period of time in a certain section, so that unsoftened or unvaporized fuel is left behind along with proper agitation of the fuel. can do.

Meanwhile, according to another embodiment of the present invention, in addition to simply forming the rotation direction of the screw in the opposite direction at the end section of the transfer path as described in FIG. 4, the transfer path itself is implemented to have an inclination to increase the efficiency of reclaimed oil production. The quality of recycled oil and/or sludge can be greatly improved. Examples of these are shown in Figures 5-6.

5 and 6 show a schematic configuration of a heating unit according to another embodiment of the present invention.

First, referring to FIG. 5, at least one transfer path (e.g., 122) included in the heating unit 120 may be formed to have an inclined structure so that the distal end in the transfer direction is higher by a predetermined height compared to the beginning. . In other words, in a transfer path with an inclined structure, the softened fuel also fills the inside of the transfer path at an angle as shown in the drawing. This results in expanding the surface area of the fuel, which can have the effect of significantly improving heating efficiency. there is. Therefore, even when the raw materials contain various types of mixed waste plastics, the discharge of fuel without being softened or vaporized can be greatly reduced, which not only improves the efficiency of the waste plastic emulsification system 100 but also makes the system itself larger than before. There are also beneficial effects that can be achieved.

In addition, as described above, there is an advantageous effect in preventing oily liquid from being discharged through the outlet (122-1), and this effect can be further maximized if a bump (122-2) is provided in front of the outlet (122-1). there is.

The transfer path formed to have an inclined structure in this way may be included in the vaporization unit.

Referring to FIG. 6, an example is shown where the second transfer path 122 and the third transfer path 123 included in the vaporization unit have an inclined structure at a predetermined angle, and the first transfer path 121 has this structure. It is okay to not have an inclined structure. In addition, as described above, each of the second transfer path 122 and the third transfer path 123 may be provided with bumps 122-2 and 122-3 at the front end of the discharge port.

Of course, the present invention is not limited to the form shown in FIG. 6, and it can be easily inferred by an average expert in the technical field to which the present invention belongs that the transfer path having an inclined structure can be determined in various ways as needed. will be.

Meanwhile, the vaporized raw material is discharged to the condensation unit 130 in a gaseous state, and is condensed in the condensation unit 130 to generate primary oil as described above.

As shown in FIG. 2, in the vaporization device, that is, the second transfer path 122 and the third transfer path 123, the softened fuel is attenuated/melted and the vaporized gas (organic gas) is transferred to the condensation unit. It can be implemented so that it can be discharged as (130).

As described above, the condensation unit 130 can generate primary oil by condensing and softening the gas in which the raw material has been heated by heating the heating unit 120, and the gas produced by the condensation unit 130 The primary oil may be purified by the purification unit 140 to finally produce oil.

In the heating unit 120 shown in FIG. 2, the gas discharge portion where the fuel is vaporized and gas is discharged is implemented to be located at a predetermined position in the second transfer path 122 and the third transfer path 123. Although a case is shown, the present invention is not necessarily limited thereto.

The position of the gas discharge portion as well as the number of gas discharge portions for each transfer path can be implemented in various ways as needed.

In this way, the gas discharged from the vaporization device, that is, the second transfer path 122 and/or the third transfer path 123, may be used to produce oil by being transferred to the condensing unit 130 and condensed. Alternatively, the gas discharged from the vaporizer may be transferred to an energy production system (not shown) that produces energy by burning waste gas.

Meanwhile, the second transfer path 122 and/or the third transfer path 123 of the vaporization device, unlike the first transfer path 121 that uses a high-frequency induction heating method, uses the kanthal (heater) method as described above. And/or a microwave heating method using microwaves may be used.

The microwave transmitting device and microwave-sensitive heating device for this purpose will be described with reference to FIG. 7.

Figure 7 schematically shows a microwave transmitting device and a microwave-sensitive heating device according to an embodiment of the present invention.

Referring to FIG. 7, when a microwave is output from the microwave transmitting device 200, the microwave-sensitive heating device 300 in response to the output microwave may generate heat.

At this time, the microwave-sensitive heating device 300 is disposed on the surface of the heating unit 120, especially the vaporizing unit (e.g., the second transfer path 122 and/or the third transfer path 123), It may be implemented to heat the vaporization unit when heat is generated. And the microwave transmitting device 200 is directed from the outside of the vaporization unit toward the vaporization unit (i.e., the microwave response attached to the surface of the second transfer path 122 and/or the third transfer path 123). Microwaves can be output (toward the type heating device 300).

In this way, the microwave-sensitive heating device 300, which generates heat in response to microwaves, includes a sensitive heating element made of silicon carbide and silicon nitride, and a low thermal expansion sintered body made of magnesium oxide, silicon dioxide, aluminum oxide, titanium dioxide, and lithium oxide. It may include a binder and a metal compound consisting of at least one of nickel, cobalt, and tungsten carbide.

The sensitive heating element containing the ceramic material made of silicon carbide and silicon nitride is capable of generating heat up to the user's desired temperature within a few seconds to tens of seconds and has the effect of producing high performance at a relatively low cost, and has the effect of producing high performance at a relatively low cost, and has the effect of producing plate-shaped, rod-shaped, It may be used to mold into either a columnar or honeycomb shape.

The drawing for explaining the present invention shows the case where the microwave-sensitive heating device 300 is molded into a plate shape with a rectangular cross-section, but the scope of the present invention is not limited thereto, and the microwave-sensitive heating device 300 is molded into a plate shape with a rectangular cross-section. Device 300 may be formed in various shapes as described above, if necessary.

In addition, the low thermal expansion sintering binder may have the effect of crystallizing the microwave-sensitive heating device 300 into a stabilized shape to increase thermal shock resistance and prevent cracks from occurring even when the temperature changes rapidly during heating.

In addition, the emulsification system 100 varies the number of microwave-sensitive heating devices 300 for each zone of the heating unit 120, especially the vaporization unit, or varies the output of the microwave transmitting device 200. Accordingly, the degree of heat generation of the microwave-sensitive heating device 300 may be varied for each zone.

Meanwhile, the configuration of a control system 150 for controlling the output of the microwave transmitting device 200 or controlling high frequency induction heating of the first transfer path 121 is shown in FIG. 8.

Figure 8 shows a schematic configuration of a control system according to an embodiment of the present invention.

Referring to FIG. 8, the control system 150 according to an embodiment of the present invention may include an input unit 151, a temperature detection unit 152, and/or a control unit 153.

The input unit 151 can receive input information including the set temperature from the user. Additionally, as described above, an operation mode may be selected.

Depending on the implementation, the input unit 151 may manually receive input information further including information about the output level of the microwave transmitter 200 from the user.

The temperature sensing unit 152 may be equipped with a predetermined sensor capable of detecting temperature. The temperature sensing unit 152 may detect at least one temperature information of the internal temperature or surface temperature of the transfer paths.

As described above, the microwave-sensitive heating device 300 is provided on the surface of the transfer passages and heats the transfer passages while generating heat. Accordingly, the temperature of the surface of the transfer passages is equal to the internal temperature of the transfer passages. It can be measured higher than that. However, since the raw material is located and heated inside the transfer passages, it may be desirable to accurately measure the temperature inside the transfer passages in order to measure the temperature at which the raw material is heated.

The control unit 153 may control the temperature of each of the transfer paths 121, 122, and 123 based on the operation mode, input information, and/or the temperature information. Of course, like the room described above, each zone (Z1 to Z10) can be controlled individually. For this purpose, high frequency induction can be controlled, the heater, and/or the output of the microwave transmitting device 200 can be controlled.

The fact that the control unit 153 controls high frequency induction may mean controlling the amount of current to flow in the coil or controlling whether to flow the current. In addition, the control unit 143 controls the output of the microwave transmitter 200, meaning that the control unit 153 varies the frequency of the microwave output by the microwave transmitter 200, or This may mean varying the output range, which is the range where microwaves reach from the microwave transmitting device 200.

For example, the control unit 153 may control the microwave transmitting device 200 to output microwaves according to the input information input by the input unit 151. As described above, since the heating part 120 has a heating temperature in the range of at least several hundred degrees Celsius, the microwave sensitive heating device 300 can initially generate as much heat as possible. Thereafter, the control unit 153 compares the temperature information detected by the temperature detection unit 152 with the input information and transmits the microwave so that the temperature information reaches the input information, that is, the set temperature. The device 200 can be controlled.

For example, when the current temperature information detected by the temperature detection unit 152 is lower than the set temperature, the control unit 153 allows the microwave sensitive heating device 300 to continue generating heat, or The microwave transmitting device 200 can be controlled to generate heat at a higher temperature.

If the current temperature information detected by the temperature detection unit 152 is higher than the set temperature, the control unit 153 transmits the microwave to prevent the microwave sensitive heating device 300 from generating any more heat. The device 200 may be controlled, or the microwave transmitting device 200 may be controlled so that the microwave sensitive heat generating device 300 generates heat at a lower temperature.

That is, the control unit 153 uses the microwave to allow the temperature information to reach the set temperature or maintain the temperature information at the current temperature through a feedback action on the temperature information obtained from the temperature detection unit 152. By controlling the transmitting device 200, easy and efficient temperature control can be achieved. This control can be performed in the same or similar manner in high-frequency induction as described above.

Meanwhile, when the gas is condensed by the condensing unit 130, organic substances accumulate in the plurality of gas passages provided inside the plurality of condensers included in the condensing section 130, and the gas passages are blocked or the gas passages are clogged. A coking phenomenon that narrows the gas flow path may occur.

Briefly explaining the process of condensing the gas in the condenser 130, the interior of the first condenser among the plurality of condensers may be provided with a plurality of gas passages through which the gas flows as described above. It can be implemented to cool and soften the gas flowing into the gas passages by flowing cold water around the gas passages inside a plurality of condensers.

At this time, in the process of softening the gas, organic matter may accumulate in the gas passage, blocking the gas passage or narrowing the gas transfer passage, causing the coking phenomenon.

If this coking phenomenon occurs, not only does it interfere with the smooth inflow of the gas, but there may also be a risk of explosion due to increased internal pressure. Therefore, when a coking phenomenon occurs, it is necessary to eliminate and/or alleviate the coking phenomenon in the relevant gas flow path.

As mentioned above, in the past, in order to solve this coking phenomenon, the tank or gas flow path (pipe) of the system was disassembled and cleaned, or the system was stopped running and a separate cleaning solution (e.g., alkali, acid, chlorine agent and/or or surfactant, etc.) has been mainly used.

In this conventional method, the operation of the system must be stopped in any case, so the continuity of the emulsification process of waste plastic is inevitably reduced, and there are problems such as a decrease in efficiency and an increase in incidental costs.

Therefore, the present invention solves the above-mentioned problems by providing a technical idea that can solve the coking phenomenon by using the primary oil generated by the condensation unit 130 during the process without stopping the emulsification process of waste plastic. It can be solved.

For example, as described above, the condensation unit 130 may be transported through the pretreatment unit 110 and the heating unit 120, and the gas in which the raw material has been vaporized may be introduced. At this time, each of the plurality of condensers may be connected to inflow passages through which the gas flows.

According to an embodiment of the present invention, in normal times, all of the plurality of condensers are not used, and the gas may flow into and be condensed only in the first condenser among the plurality of condensers. 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 is cut off to allow the gas to flow into the second condenser. The emulsification process may proceed.

Then, when the coking phenomenon occurs in the gas passage inside the first condenser, the waste plastic emulsification system 100 blocks the inflow of the gas into the first condenser, and prevents the gas from flowing into the second condenser. You can do it.

And while condensation of the gas progresses through the second condenser, the coking phenomenon in the first condenser can be resolved.

In this case, even if the coking phenomenon occurs in the first condenser, there is no need to stop operation of the system to clean the first condenser, so a continuous waste plastic emulsification process can proceed.

In addition, according to the technical idea of the present invention for this purpose, instead of the conventional method such as disassembling the first condenser from which the gas no longer flows from the heating unit 120 or injecting a separate cleaning solution, waste plastic The coking phenomenon in the first condenser can be resolved using an emulsification process.

For example, a supply passage through which the primary oil stored in the above-described oil tank can be supplied to the plurality of condensers is connected, and as the primary oil flows into the first condenser where the coking phenomenon occurred, the primary oil The coking phenomenon can be resolved with oil.

The primary oil may be stored in the oil tank and supplied to the condenser when the coking phenomenon occurs, but preferably, the primary oil is heated by the oil tank as described above, and the heated Supplying primary oil to the first condenser may be more effective in resolving the coking phenomenon.

At this time, to heat the oil tank, a microwave transmitting device 200 and a microwave-sensitive heating device 300 according to the technical idea of the present invention may be used.

Meanwhile, in order to determine whether coking has occurred in the gas passages in the plurality of condensers, the waste plastic emulsification system 100 further includes a flow rate detection unit (not shown) capable of detecting the flow rate of the gas passages. It can be included.

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

When a coking phenomenon occurs in the gas passage and the passage area of the gas passage 10 narrows, the flow rate detection unit (not shown) determines whether the coking phenomenon occurs based on the change in the flow of gas inside the gas passage. You can judge. And the waste plastic emulsification system 100 can control whether the gas is introduced into or blocked (opening or closing the flow path) to each of the plurality of condensers according to the judgment result of the flow rate detection unit (not shown).

Figure 10 is a diagram for explaining operating modes according to an embodiment of the present invention.

Referring to FIG. 10, as described above, the emulsification system 1 may be operated in one of a plurality of operation modes. And for each operation mode, the temperature section for each zone (eg, Z1 to Z10) included in the transfer paths 121, 122, and 123 may be set differently in advance.

Each operating mode can be appropriately set depending on the main type of raw material 10.

For example, in the first mode among the plurality of operation modes, the main type of raw material may be waste fishing line. And in this case, the zones included in the second transfer path 122 can each be set to temperature sections (a1 to a2, a2 to a3, a3 to a4, and a4 to a5). Additionally, the zones included in the third transfer path 123 can each be set to temperature sections (b1~b2, b2~b3, b3~b4, and b4~b5). Of course, what temperature range is desirable to set for each raw material can be set in various ways depending on the thermal characteristics of each raw material.

Meanwhile, in the second mode among the plurality of operation modes, the main type of raw material may be waste tires. And in this case, the areas included in the second transfer path 122 can each be set to a temperature range (c1~c2, c2~c3, c3~c4, c4~c5). Additionally, the zones included in the third transfer path 123 can each be set to temperature sections (d1 to d2, d2 to d3, d3 to d4, and d4 to d5).

In addition, the embodiment shows an example in which the upper limit of the temperature section of the consecutive preceding zone is set to be the same as the lower limit of the temperature section of the next zone, but the average expert in the technical field of the present invention will easily understand that it is not necessarily limited to this. It can be inferred. In addition, as described above, the temperature section of the trailing zone may be set higher than the temperature section of the preceding zone.

Ultimately, according to the technical idea of the present invention, even when raw materials mixed with different types of plastic are input, the temperature of the heating furnace is gradually increased, and temperature sections with high thermal decomposition efficiency of the raw materials are selected and heating is performed to ensure high quality. It has the effect of producing recycled oil.

Figure 11 is a diagram showing the results of component analysis of sludge discharged through a system according to an embodiment of the present invention.

Figure 11 shows the inclined structure and bumps 122-2, 122- of each of the transfer paths (e.g., 122, 123) as described above so that the oil liquid is not included in the next transfer path or sludge, according to the technical idea of the present invention. 3) shows the results of analysis of the components of sludge (residue) discharged when producing recycled oil using the emulsification system 100 equipped with a public institution (Korea University of Technology and Technology).

As a result of analysis of three samples as shown in Figure 11, it can be seen that the sludge is discharged as high-purity carbon sludge containing, on average, 95.22% carbon by weight and 97.03% by element ratio. In addition, it can be confirmed that 3.52% of oxygen and 1.26% of iron are contained in the sludge by weight, and that only 2.69% of oxygen and 0.27% of iron are contained in the sludge by elemental ratio.

This high-purity carbon sludge can be used as a recycled raw material for the production of recycled rubber and various other industries.

The present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached registration claims.

Claims (9)

In the waste plastic emulsification system with improved heating and reduction efficiency,
It includes at least one transfer path through which raw materials including waste plastic are transferred, and a heating unit for heating the raw materials; and
It includes a control system for controlling heating of the heating unit,
It includes a condensation unit that condenses the gas generated from the raw material heated by the heating unit to generate primary oil,
The heating unit,
A first transfer path for softening the input solid raw material by heating at least a portion of the area using a first heating method; and
At least a portion of the area is heated by a second heating method to vaporize the softened raw material transferred from the first transfer path, comprising a second transfer path and a third transfer path to generate the gas;
The second transfer path and the third transfer route are, respectively,
An inclined structure is formed so that the height of the distal end is higher by a predetermined height compared to the inlet, and in order to prevent the liquid oil in the transfer path from falling into the outlet, it is located at the front of the outlet in the transfer direction of the raw material and has a predetermined amount in the outlet direction. It is characterized by having a bump formed to have an inclination,
The second transfer route and the third transfer route,
It is divided into a plurality of zones where heating can be individually controlled, and each zone is heated to have a gradually higher temperature range from the entry section to the end section along the transport direction.
The control system is,
One of a plurality of operating modes is selected by the user according to the type of the raw material, and temperature section information for each of the plurality of zones included in each of the at least one transfer path is preset differently for each of the operating modes. A waste plastic emulsification system with improved heating and reduction efficiency, wherein the plurality of zones are heated to correspond to each temperature section information preset according to the selected operation mode.
The waste plastic emulsification system of claim 1, wherein the waste plastic emulsification system has improved heating and reduction efficiency,
a first moving passage connecting the first conveying passage and the second conveying passage and moving the softened raw material softened in the first conveying passage to the second conveying passage; and
It further includes a gas line for injecting a predetermined gas into a predetermined position on the first movement passage,
A waste plastic emulsification system with improved heating and reduction efficiency, wherein the gas line continuously injects the gas during the operation time when the heating unit starts operating.
The waste plastic emulsification system of claim 1, wherein the waste plastic emulsification system has improved heating and reduction efficiency,
It further includes a gas line for injecting a predetermined gas into a predetermined position at the beginning of the second transfer path,
A waste plastic emulsification system with improved heating and reduction efficiency, wherein the gas line continuously injects the gas during the operation time when the heating unit starts operating.
The method of claim 3, wherein the gas is:
A waste plastic emulsification system with improved heating and reduction efficiency, characterized in that it is injected in an amount of 1% to 10% of the volume of the raw material per hour.
The method of claim 1, wherein each of the second transfer path and the third transfer path,
Divided into a plurality of zones whose heating can be individually controlled,
Each zone is heated to have a gradually higher temperature range from the initial section to the end section along the transport direction.
A waste plastic emulsification system with improved heating and reduction efficiency, characterized in that the area corresponding to the entrance section of the third transfer path is heated to have a higher temperature section than each zone of the second transfer path.






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