KR101828312B1 - Waste plastics oil system using a microwave - Google Patents

Abstract

Disclosed is a waste plastic emulsification system using microwaves. The waste plastic emulsification system using microwaves according to an embodiment of the present invention includes: a heating unit to heat raw materials containing waste plastics; and a condensing unit which generates primary oil by condensing gas generated from the raw materials heated by the heating unit. The heating unit includes: a first housing; a first transfer path which is disposed in the inside of the first housing and transfers the raw materials; at least one first microwave transmitter which is included in the first housing and outputs microwaves toward the inside of the first housing; and at least one first microwave-sensitized heater which is included in the surface of the first transfer path and generates heat in response to the microwaves. The raw materials positioned inside the first transfer path can be heated when the first microwave-sensitized heater generates heat and heats the first transfer path. The present invention is provided to reduce resource consumption and enable efficient heating of raw materials.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a microwave-

The present invention relates to a waste plastic emulsification system using microwaves and a method thereof, and more particularly, to a waste plastic emulsification system for producing oil by heating and heat-treating a raw material containing waste plastic, The present invention relates to a technical idea that enables efficient heating while reducing power consumption as compared with the conventional method using an electric coil or the like by using a microwave-assisted heating device that generates heat in response to a wave.

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.

At this time, in the heating furnace in which the raw material is heated, a heat generating material, especially an electric coil, which mainly converts electric energy into heat energy is widely used, and the raw furnace is heated or melted by heating the furnace.

However, when the electric coil is used, there is a problem that the electric consumption is large and the cost is increased accordingly.

Recently, microwave-assisted heating devices capable of generating heat by being sensitive to microwaves have been known. Such microwave-assisted heat generating devices are capable of being formed into various shapes, and have excellent heat-shock resistance and heat generation, and their power consumption is relatively small compared to conventional electric coils and the like.

Therefore, it is required to apply such a microwave-assisted heating device to a waste plastic emulsification system so as to effectively heat and waste or melt the waste plastic material, and to reduce resources such as electric power in the process .

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

Accordingly, a technical problem to be solved by the present invention is to use a microwave-assisted heating device for heating waste plastics (raw materials) in a waste plastic emulsification system to reduce the consumption resources such as electric power, .

According to an aspect of the present invention, there is provided a microwave-assisted waste plastic emulsification system including a heating unit for heating a raw material including waste plastics, and a gas generated from the raw material heated by the heating unit, A condenser for condensing the condensed water to generate a primary oil, wherein the heating unit includes a first housing, a first conveying passage disposed in the first housing and through which the raw material is conveyed, a first conveying passage provided in the first housing, At least one first microwave transmitter for outputting a microwave toward the inside of the housing, and at least one first microwave sensor for generating heat in response to the microwave, And when the first microwave-assisted heat generating device generates heat to heat the first conveyance path, That is the raw material placed inside can be heated to can be characterized.

The heating unit may include a second housing, a second conveying path disposed in the second housing and through which the raw material is conveyed from the first conveying path, a second conveying path provided in the second housing, And at least one second microwave generating device provided on a surface of the second conveying path and generating heat in response to the microwave, wherein the second microwave transmitting device outputs at least one second microwave- When the microwave-assisted heat generating device generates heat to heat the second conveyance path, the material positioned inside the second conveyance path can be heated.

The heating unit may be configured such that the first microwave transmitter outputs a microwave to the first microwave heating apparatus so that the first feeding path is heated to a first temperature range, Wherein the first microwave heating type heating device and the second microwave heating type heating device output the microwave to the second microwave heating type heating device so that the second feeding path is heated to the second temperature range, And the number of the devices is different from the first temperature interval to the second temperature interval.

The first microwave transmission device may be divided into a plurality of sections so that the microwaves may be heated to at least two different temperatures for each of the plurality of sections, And the first microwave-assisted heating device is provided in a different number for each of the plurality of sections.

According to the technical idea of the present invention, by using the microwave-assisted heating device for heating the waste plastics (raw materials) in the waste plastic emulsification system, it is possible to effectively heat the raw materials while reducing consumable resources such as electric power.

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 using microwave according to an embodiment of the present invention.
2 shows a schematic configuration of a heating unit according to an embodiment of the present invention.
3 schematically shows a microwave transmitter and a microwave-assisted heating device according to an embodiment of the present invention.
FIG. 4 schematically shows an embodiment of a microwave-driven waste plastic emulsification system according to an embodiment of the present invention.
5 shows a schematic configuration of a preprocessing unit according to an 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 using microwave according to an embodiment of the present invention, and FIG. 2 shows a schematic configuration of a heating unit according to an embodiment of the present invention.

1, a microwave-driven 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. The configuration of the preprocessing unit 110 for this purpose is shown in FIG.

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

Referring to FIG. 5, 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. At this time, the drying apparatus 113 can dry the raw material using, for example, warm air.

As the feed path included in the heating unit 120 is heated, the raw material conveyed along the feed path can be heated and melted and / or melted.

According to an embodiment of the present invention, in order to prevent air contact with the raw material during the continuous process, oxygen may be removed by filling the feed path of the raw material with nitrogen. When the raw material is heated by the heating unit 120, which will be described later, when the air comes into contact with the air or the oxygen is high, the air layer (oxygen) in the feed path is removed It can be important.

According to the technical idea of the present invention, the heating unit 120 can heat and melt the raw material through two processes having different temperature ranges, so that the raw material can be smoothly and efficiently melted and melted . For this, the heating unit 120 may include a first conveying path and a second conveying path.

According to an embodiment, the heating unit 120 may not include a separate conveying path, such as the first conveying path and the second conveying path, but may include only one conveying path. It goes without saying that the heating unit 120 may include a plurality of feed paths. 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. Hereinafter, the case where the heating unit 120 includes the first transfer path and the second transfer path is described as an example, but the scope of the present invention is not necessarily limited thereto.

According to an embodiment of the present invention, the first conveyance path may mean the melting device 121 or the melting device 122 shown in the drawing, and the second conveyance path may include the first conveyance path, But may be implemented in other types of devices.

For example, when the first conveyance path means the melting device 121, the second conveyance path may mean the melting device 122.

Hereinafter, the case where the first conveying path is implemented by the melting device 121 and the second conveying path is realized by the melting device 122 will be described as an example, and the respective names may be used in combination, The scope of the present invention is not limited thereto. For example, according to an embodiment, the first transfer path may be implemented by the melting apparatus 122, and the second transfer path may be implemented by the melting apparatus 121. [

The configuration of the heating unit 120 will be described later with reference to FIG.

The melting device 121 and the melting device 122 shown in FIG. 2, that is, the first feeding path and the second feeding path each have different temperature sections and can heat the raw material. According to the embodiment, the temperature interval of the melting apparatus 122 may be relatively higher than the temperature interval of the melting apparatus 121.

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 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.

Referring to FIG. 1 again, the condenser 130 may be heated by the heating unit 120 to condense and liquefy the vaporized raw material to generate primary oil.

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

In the heating unit 120 shown in FIG. 2, a gas exhaust part where the fuel is vaporized and a gas is discharged is shown to be positioned at a distal end portion of the melting apparatus 122, but the present invention is not limited thereto. A plurality of gas discharging portions may be formed as needed, and the gas discharging portions may be formed at the same time as the terminal portions as well as other positions of the melting apparatus 122. For example, at the other end of the melting apparatus 122, such as the end section of the melting apparatus 122, as well as the middle section of the melting apparatus 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).

As described above, according to the technical idea of the present invention, in order to heat the raw material in the heating unit 120, the feed path can be heated by the microwave-assisted heating device. Hereinafter, an application example of the microwave transmitter, the microwave transmitter, the microwave transmitter, and the microwave sensor will be described with reference to FIG. 3 to FIG.

FIG. 3 schematically shows a microwave transmitter and a microwave-assisted heating device according to an embodiment of the present invention. FIG. 4 schematically shows an embodiment of a microwave-assisted waste plastic emulsification system according to an embodiment of the present invention. .

Referring to FIG. 3, when a microwave is output from the microwave transmitter 200 according to the embodiment of the present invention, the microwave-assisted heat generator 300 responsive to the output microwave may generate heat.

In this case, the microwave-assisted heating device 300 is disposed on the surface of the conveyance path (for example, the melting device 121 and / or the melting device 122), and when heated, . The surface of the conveyance path (for example, the demodulating device 121 and / or the melting device 122) is conveyed to the inside of the conveying path (for example, the demodulating device 121 and / or the melting device 122) May be meant to include a surface or an exterior surface. That is, the microwave-assisted heating device 300 may be disposed on any one of the inner surface and the outer surface of the conveyance path (for example, the melting device 121 and / or the melting device 122) Both on the surface and on the outer surface.

However, in the case of the inner surface of the conveyance path (for example, the demodulating device 121 and / or the melting device 122), the microwave outputted from the microwave transmitting device 200 may not reach or be distorted The microwave-assisted heating device 300 may be disposed on the outer surface of the conveyance path (for example, the melting device 121 and / or the melting device 122) Lt; / RTI >

Hereinafter, the expression that the microwave-assisted heating device 300 is disposed on the surface of the conveyance path (for example, the melting device 121 and / or the melting device 122) It may mean that the heating device 300 is disposed on the outer surface of the conveyance path (for example, the melting device 121 and / or the melting device 122), but the scope of the present invention is not limited thereto It is not.

The microwave transmitter 200 may output a microwave from the outside of the conveyance path toward the conveyance path (i.e., toward the microwave-assisted heating device 300 attached to the conveyance path) . An example of this is shown in FIG.

Referring to FIG. 4, the heating unit 120 according to the embodiment of the present invention includes the housing 121-1, the first transfer path, for example, At least one microwave transmitting device 200 provided in the housing 121-1 and outputting a microwave toward the inside of the housing 121-1, a conveying path 121-2 through which the raw material is conveyed, And at least one microwave sensor 300 disposed on the surface of the transfer path 121-2 and generating heat in response to the microwave output from the microwave transmitter 200 .

The feed path 121-2 can be conveyed by driving the screw S provided therein.

In addition, the transfer path 121-2 may be disposed in the housing 121-1 so as to have a predetermined empty space.

The microwave transmitter 200 may be provided outside the housing 121-1 or inside the housing 121-1 according to an embodiment. According to an example, the microwave transmitter 200 may be provided to allow a user to operate the microwave transmitter 200 or to confirm that the microwave transmitter 200 is installed. Of course, the microwave transmitter 200 may be provided inside the housing 121-1 or outside the housing 121-1 so that the user can not visually recognize the microwave transmitter 200 in the housing 121-1 .

In any case, the microwave transmitter 200 may be provided to output a microwave in an inner direction of the housing 121-1. That is, the microwave transmitting apparatus 200 may be installed in the microwave-assisted microwave transmitting apparatus 121-1 provided on the surface of the feeding path 121-2, It is possible to output microwaves toward the heating device 300.

Although the configuration of the melting device 121 is shown as an example in the drawing, the melting device 122 may have the same configuration as the drawing. For example, the melting apparatus 122 is provided with a second housing separate from the housing 121-1, a second feeding path inside the second housing, a second microwave transmitting apparatus provided in the second housing, And a second microwave heating device provided on the surface of the second transfer path.

The microwave-assisted heating device 300, which generates heat by being sensitive to microwaves, includes a reaction heating element made of silicon carbide and silicon nitride, a low thermal expansion sintered body made of magnesium oxide, silicon dioxide, aluminum oxide, titanium dioxide, A binder, and a metal compound composed of at least one of nickel, cobalt, and tungsten carbide.

The sensitive heating element including the ceramic material composed of the above-mentioned boiling silicon and silicon nitride is capable of heating to a desired temperature within a few seconds to several tens of seconds, has an effect of achieving high performance at a relatively low cost, And may be used for molding into a shape of either a columnar or a honeycomb.

4 illustrates a microwave-assisted heating device 300 formed into a rectangular plate having a rectangular cross section, the scope of the present invention is not limited thereto, The wave-assisted heating device 300 may be formed in various shapes as described above, attached to the conveying path 121-2 as necessary, and is sensitive to microwaves output from the microwave transmitting device 200, Thereby heating the conveying path 121-2 and thereby heating the material located inside the conveying path 121-2.

In addition, the low thermal expansion sintering binder may crystallize the microwave-assisted heat generating device 300 into a stabilized shape to enhance the thermal shock resistance and prevent the crack from being generated even when the temperature changes suddenly.

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.

According to the embodiment of the present invention, the melting apparatus 122 may be divided into a plurality of sections as in the above-described apparatus 121.

At this time, in the end section of the melting apparatus 122, for example, the end of the screw 20 provided inside the melting apparatus 122 for feeding the raw material, the direction of the screw 20 is opposite to the remaining section So that when the screw 20 rotates in a predetermined direction, the transport directions are opposite to each other.

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.

That is, when the raw material conveyed in the melting apparatus 122 reaches the end section, the raw material can be returned to the intermediate section by the screw whose conveying direction is reversed in the end section.

 In this case, the second temperature interval may be implemented such that the temperature of the distal end portion is not 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.

The microwave-assisted waste plastic emulsification system 100 is connected to the microwave-assisted heating device (not shown) for each section of the conveying path 121-2 of the melting device 121 and / 300 may be different from each other or the output of the microwave transmitter 200 may be different to differentiate the degree of heat generation of the microwave sensor 300 with respect to each section.

According to an embodiment, the conveyance path 121-2 according to the embodiment of the present invention may include two conveyance paths arranged side by side as shown in FIG. 4, and screws included in the respective conveyance paths have.

At this time, the screws provided in the respective conveyance passages may be arranged so that the ranges of the rotary blades are overlapped with each other, and the respective rotary blades are alternately positioned.

In this case, since the material is melted or melted on the screw 121-2, particularly, on the screw, it is possible to prevent the danger that the conveyance can not be smoothly prevented by blocking the screw or by blocking the rotation of the screw .

That is, the raw material can be crushed by the rotating blades of the two screws arranged so as to be overlapped with each other, and it is possible to prevent the raw material from hardening on the screws and hindering smooth transport of the raw materials .

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.

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 (4)

In a waste plastic emulsification system using a microwave,
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:
A first housing;
A first conveying path disposed inside the first housing and through which the raw material is conveyed;
At least one first microwave transmitter provided in the first housing and outputting a microwave toward the first transport path disposed inside the first housing; And
And at least one first microwave-assisted heating device provided on a surface of the first conveyance path and generating heat in response to the microwave,
Wherein the raw material located in the first transfer path can be heated when the first microwave-assisted heating device generates heat and heats the first transfer path.
The apparatus according to claim 1,
A second housing;
A second transfer path disposed inside the second housing and through which the raw material is transferred from the first transfer path;
At least one second microwave transmitter provided in the second housing and outputting a microwave toward the inside of the second housing; And
And at least one second microwave-assisted heating device provided on a surface of the second conveyance path and generating heat in response to the microwave,
Wherein when the second microwave-assisted heating device generates heat to heat the second conveyance path, the material positioned inside the second conveyance path can be heated.
The apparatus according to claim 2,
Wherein the first microwave transmitter outputs a microwave to the first microwave heating apparatus so that the first feeding path is heated to a first temperature range,
The second microwave transmitting apparatus may output microwaves to the second microwave heating apparatus so that the second feeding path is heated to a second temperature range,
Wherein the number of the first microwave-assisted heating device and the number of the second microwave-assisted heating devices are different from each other so as to correspond to the first temperature interval and the second temperature interval. Emulsification system.
The image forming apparatus according to claim 1,
And is divided into a plurality of sections,
The first microwave transmission apparatus may output microwaves differently for each of the plurality of sections so that the microwaves may be heated to at least two different temperatures for each of the plurality of sections,
Wherein the first microwave-assisted heating device is provided in a different number for each of the plurality of sections.

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