KR20230024235A - Intermittent waste plastic emulsification system with improved efficiency - Google Patents

Abstract

Disclosed is a batch-type waste plastic emulsification system having improved efficiency. The batch-type waste plastic emulsification system having improved efficiency according to one embodiment of the present invention comprises: a heating furnace where raw materials introduced through a raw material inlet formed on one side are stored; a heating unit heating the raw materials introduced into a drum; a control system controlling heating of the heating unit; and a condensation unit generating primary oil by condensing the gas generated from the raw materials heated by the heating unit, wherein the heating unit heats the furnace by using a microwave heating method using microwaves.

Description

Intermittent waste plastic emulsification system with improved efficiency}

The present invention relates to a batch-type waste plastics emulsification system with improved efficiency, and more particularly, to a technical idea for improving the efficiency of a batch-type (or intermittent) waste plastics emulsification system that is relatively less efficient than a continuous type. .

Technical ideas for recycling and using waste plastics or generating renewable energy from waste plastics are being actively studied.

In general, a conventional waste plastic emulsification system for chemically recycling waste plastic by pyrolysis is composed of a heating furnace and a gas classification tank for crushing solid waste plastic through a crusher and applying heat to the pulverized waste plastic A method of pyrolysis after melting is used.

In this way, when waste plastic is pyrolyzed, oil can be produced from waste plastic by heating raw materials (that is, waste plastic) to vaporize them into various organic gases (gases), and then condensing and purifying the gases by type.

Among the systems that produce renewable energy from raw materials such as waste plastic or waste vinyl, the recently widely known continuous waste plastic emulsification system heats the sequentially input raw materials and transfers the melted raw materials through a screw in the transfer furnace. While the batch type (or intermittent type) waste plastic emulsification system puts the raw materials into one heating furnace at once, and collects the gas for condensation, a new process is performed until the emulsification process of the raw materials is all completed. There is a feature that cannot be performed continuously.

In the case of such a batch type (or intermittent type), the range of use is reduced because the efficiency is relatively lower than that of the continuous type. However, the batch type (or intermittent type) can be miniaturized compared to the continuous type, and it is easy to operate selectively only when the user needs it, so it is rather difficult to collect a certain amount of raw materials such as waste plastics from islands or remote areas and process them at the time. can be effective Accordingly, there is still a demand for a batch (or intermittent) waste plastic emulsification system, and a technical idea capable of further improving the efficiency of the batch (or intermittent) waste plastic system is required.

Korea Patent Registration (Registration No. 10-1890415, "Waste Plastic Pyrolysis Emulsification Apparatus and Emulsification Method")

Therefore, the technical problem to be achieved by the present invention is to increase the efficiency that is reduced as the conventional batch (or intermittent) waste plastic emulsification system mainly uses a burner for heating, an electrical heating method (e.g., microwave Heating method and / or high frequency induction heating method) to provide a technical idea that can be used.

In addition, in a batch type (or intermittent type) in which a relatively large amount of raw material is heated in one heating furnace at a time compared to a continuous type, a technical idea that can improve the efficiency of the emulsification process by enabling even heating of the raw material is to provide

A batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention for achieving the above technical problem is a heating system in which raw materials input through a raw material inlet formed on one side are stored. Furnace, including a heating unit for heating the raw material put into the drum, a control system for controlling the heating of the heating unit, and a condensing unit for condensing gas generated from the raw material heated by the heating unit to produce primary oil And, the heating unit may be characterized in that the heating furnace is heated by a microwave heating method using microwaves.

In addition, the heating unit may include a housing formed to surround the heating furnace at a predetermined interval, at least one microwave transmitter provided in the housing and outputting microwaves toward the inside of the housing, and a surface of the heating furnace. It may include at least one microwave sensitive heating device provided in the microwave and generating heat in response to the microwave.

In addition, the batch-type waste plastic emulsification system with improved efficiency may further include at least one heating inductor for inducing heating of the raw material inside the heating furnace.

In addition, the heating conductor may be formed in the form of a metal block or a metal column capable of receiving heat from an inner wall of the heating furnace.

In addition, the batch-type waste plastic emulsification system with improved efficiency may further include a stirring device provided inside the heating furnace to stir the raw material to be heated.

In addition, the batch-type waste plastic emulsification system with improved efficiency further includes a nitrogen line capable of injecting nitrogen through the lower end of the heating furnace, and the control system determines that when the internal temperature of the heating furnace reaches a certain level or higher. , It is possible to control so that nitrogen can be injected through the nitrogen line at regular intervals.

In addition, the control system may be characterized in that it controls the heating unit to perform step-by-step temperature management at predetermined time intervals.

A batch-type waste plastic emulsification system with improved efficiency according to another embodiment of the present invention for solving the above technical problem is a batch-type waste plastic emulsification system, in which raw materials input through a raw material inlet formed on one side are stored A heating furnace, a heating unit for heating the raw material put into the drum, a control system for controlling the heating of the heating unit, and a condensing unit for condensing gas generated from the raw material heated by the heating unit to produce primary oil. The heating part may be characterized in that it heats the heating furnace by a high-frequency induction heating method.

In addition, the heating unit may further heat the heating furnace by using a microwave heating method using microwaves.

According to the technical concept of the present invention, an electrical heating method (eg, microwave heating method and / or high-frequency induction heating method) has an effect of significantly improving heating efficiency.

In addition, in the batch type (or intermittent type) in which a relatively large amount of raw material is heated in one heating furnace at a time compared to the continuous type, even heating of the raw material is possible to improve the efficiency of the emulsification process as well as carbonization of the raw material 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.
1 shows a schematic configuration of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
2 and 3 are views for explaining the microwave heating method of the batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
4 is a view for explaining a high-frequency induction heating method of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
5 is a view for explaining a stirring device of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
6 is a view for explaining nitrogen injection of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
7 is a view for explaining a condensation unit for preventing coking in a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.
8 is a view for explaining waste gas utilization of a batch type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

In order to fully understand the present invention and the advantages in operation of the present invention and the objects achieved by the practice of 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 describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

In addition, in the present specification, the softening of a raw material may mean a state in which the raw material is softened by heating and changed to a gel-like physical property.

1 shows a schematic configuration of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

Referring to FIG. 1, a batch-type waste plastic emulsification system 1 with improved efficiency according to an embodiment of the present invention includes a heating furnace 100 into which raw materials 10 are introduced through a raw material inlet formed on one side, the heating A heating unit 200 for heating the raw material 10 put into the furnace, a control system (not shown) for controlling the heating of the heating unit 200, and/or a raw material heated by the heating unit 200 It may include a condensing unit 300 that condenses the gas generated from (10) to generate primary oil.

The raw material 10 may include general thermoplastic waste synthetic resin. For example, the raw material 10 may include waste plastic, waste vinyl, and the like. For convenience of description, the raw material 10 will be described below as an example of waste plastic, but the present invention is not necessarily limited thereto. no. As described above, the raw material 10 may include all materials that can be melted when heated to a predetermined temperature and refined into a predetermined recycled oil, including waste synthetic resins of thermoplasticity such as polyethylene and polypropylene.

The heating furnace 100 may be formed such that a raw material input port is formed on one surface so that the raw material 10 is injected. The raw material put into the heating furnace 100 may be refined into predetermined oil (recycled oil) while being heated inside the heating furnace 100 according to the technical concept of the present invention, which will be described later.

As described above, compared to the recently well-known continuous waste plastic emulsification system, which heats the sequentially introduced raw materials 10 and transfers the melted raw materials through a screw in a conveyor, and collects gas for condensation, a batch type In the (or intermittent) waste plastic emulsification system, the raw material 10 is injected into one heating furnace 100 at once, and the new process is continuously performed until the emulsification process of the raw material 10 once injected is all completed. There are features that cannot be performed.

In the case of such a batch type (or intermittent type), the range of use is reduced because the efficiency is relatively lower than that of the continuous type. However, since the batch type (or intermittent type) can be miniaturized compared to the continuous type, and selective operation is easy only when the user needs it, a certain amount of raw material 10 such as waste plastic is collected from an island or remote area and then processed at the time. It can be rather effective to do so. Accordingly, while the demand for a batch (or intermittent) waste plastic emulsification system still exists, the present invention is intended to provide a technical idea capable of further improving the efficiency of the batch (or intermittent) waste plastic system.

Conventionally, in a batch-type (or intermittent-type) waste plastic emulsification system, a burner is mainly used to heat the raw material 10. As described above, the heating method using such a burner has a risk of fire or explosion in that the raw material 10 is melted and is located close to the generated gas (gas), and the efficiency is greatly reduced due to the large amount of energy consumed for heating. there is In addition, since the heating method using a burner has a substantially constant heating temperature, a large amount of raw material 10 mixed with various materials is not evenly melted, and there is a burden that the specific gravity of carbide is significantly increased.

Therefore, the present invention is to solve the above problems by using an electric method instead of using a conventional burner for heating the heating furnace 100.

In one embodiment, the heating unit 200 for heating the heating furnace 100 may be implemented as a microwave heating method using microwaves. The microwave heating method will be described with reference to FIGS. 2 and 3 . 2 and 3 are views for explaining the microwave heating method of the batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

Microwave heating method The heating unit 200 includes a housing 210 formed to surround the heating furnace 100 at a predetermined distance from the heating furnace 100, and provided in the housing 210 to form the housing 210. (210) at least one microwave transmitter 210 that outputs microwaves toward the inside, and/or at least one microwave sensor that is provided on the surface of the heating furnace 100 and generates heat in response to the microwaves A mold heating device 220 may be included. Hereinafter, in this specification, a method of performing heating using microwaves is defined as a microwave heating method for convenience of explanation.

Referring to FIG. 2 , when microwaves are output from the microwave transmitter 210, the microwave sensitive heating device 220 in response to the output microwaves may generate heat.

At this time, as shown in FIG. 3 , the microwave sensitive heating device 220 may be disposed on the surface of the heating furnace 100 and heat the heating furnace 100 when heat is generated. Also, the microwave transmitter 210 may output microwaves toward the heating furnace 100 from the outside of the heating furnace 100 .

The microwave-sensitive heating device 220, which generates heat in response to microwaves, includes a responsive heating element made of silicon carbide and silicon nitride, and low thermal expansion sintering made of magnesium oxide, silicon dioxide, aluminum oxide, titanium dioxide, and lithium oxide. It may include a binder and a metal compound made of at least one of nickel, cobalt, and tungsten carbide.

The sensitive heating element including a ceramic material made of silicon carbide and silicon nitride can generate heat up to a temperature desired by the user within several seconds to several tens of seconds, and has the effect of producing high performance at a relatively low cost, and is plate-shaped, rod-shaped, It can also be used to mold into either a columnar shape or a honeycomb shape.

In the drawings for explaining the present invention, a case in which the microwave sensitive heating device 220 is formed in a plate shape with a rectangular cross section is shown, but the scope of the present invention is not limited thereto, and the microwave sensitive heating device 220 is not limited thereto. The device 220 may be formed in various shapes as described above as needed.

In addition, the low thermal expansion sintered binder may have an effect of increasing thermal shock resistance by crystallizing the microwave sensitive heating device 220 into a stabilized shape and preventing cracks from occurring even when a rapid temperature change occurs during heating.

In this microwave heating method, it is possible to adjust the degree of heat generation, that is, the heating temperature, according to the user's needs, while varying the number of the microwave sensitive heating devices 220 and/or the output of the microwave transmitting device 210. can

Meanwhile, the heating unit 200 may be implemented to heat the heating furnace 100 using a high frequency induction heating method using high frequency as well as the above-described microwave heating method. A high frequency induction heating method for this purpose will be described with reference to FIG. 4 .

4 is a view for explaining a high-frequency induction heating method of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

In high-frequency induction heating, alternating magnetic flux is generated by flowing alternating current through the coil using electromagnetic induction, so that induced current (eddy current) flows in the object to be heated, and Joule heat is generated by this induced current, and heating is performed using this. can mean doing. Since the technical idea related to such high-frequency induction heating is already widely known, a detailed description thereof will be omitted herein. In this specification, for convenience of description, a method of performing heating using electromagnetic induction generated by flowing a current through a coil is defined as a high-frequency induction heating method.

In the case of the high-frequency induction heating method using high-frequency waves, high-frequency waves are directly output into the heating furnace 100 to directly heat the object to be heated.

At this time, as shown in the figure, the inside of the heating furnace 100 is heated between the raw materials 10 by the high frequency and a predetermined heating inductor 230 for inducing uniform heating of the raw materials 10 is provided. may have been In one embodiment, the heating inductor 230 may be formed in the shape of a column made of metal or a cube made of metal. Of course, the material or shape of the heating inductor 230 is not necessarily limited thereto, and the heating inductor 230 may be made of various shapes and materials as needed if it does not melt with the raw material 10 and has high thermal conductivity. can be implemented

In the case of such a high-frequency induction heating method, it may be possible to rapidly heat the object to be heated compared to other methods, and it may be possible to soften the raw material in a solid state relatively quickly. However, in the case of high-frequency induction heating, energy consumption is higher than that of the above-mentioned microwave heating method using microwaves, but compared to conventional general band heaters and other heat sources, energy consumption is relatively low and heating efficiency is excellent. Since rapid heating is possible, there is an effect of greatly improving heating efficiency when properly used.

For such high-frequency induction heating, although not shown in the drawing, the heating furnace 100 may be provided with a coil for electromagnetic induction in advance. In addition, a predetermined power system for sending current to the coil may be provided. Since the power supply system for induction heating is already known, further detailed descriptions will be omitted.

In the case of the high-frequency induction heating method, not only the surface of the heating furnace 100 but also the heat of the internal steel material (eg, the exothermic inductor 230) can be induced, so that the heating surface area can be relatively widened. Therefore, the high-frequency induction heating method is capable of relatively rapid heating compared to the microwave heating method, and thus can have an effect of softening a large amount of raw material in a relatively quick time.

However, as described above, in the case of the high-frequency induction heating method, energy consumption required for heating is large compared to the microwave heating method, so there is a risk that the energy efficiency of the overall process may be lowered.

Therefore, the present invention mixes the high-frequency induction heating method and the microwave heating method, and applies the high-frequency induction heating method capable of relatively rapid heating at the time when the solid state raw material is first introduced into the heating furnace 100. The efficiency of the entire process can be greatly improved by rapidly softening the solid-state raw material and then applying a microwave heating method with relatively low energy consumption.

Of course, the heating unit 200 may apply the microwave heating method alone or the high frequency induction heating method alone, if necessary.

Meanwhile, a configuration of a control system for controlling the output of the microwave transmitter 210 or controlling the high-frequency induction heating of the heating furnace 100 is shown in FIG. 5 .

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

Referring to FIG. 5 , the control system 150 according to an embodiment of the present invention may include an input unit 151, a temperature sensor 152, and/or a control unit 153.

The input unit 151 may receive input information including a set temperature from a user. Depending on the embodiment, the input unit 151 may manually receive input information further including information about the degree of output of the microwave transmitter 210 from the user.

The temperature sensing unit 152 may include a predetermined sensor capable of sensing temperature. For example, the temperature sensor 152 may detect temperature information of at least one of an internal temperature of the heating furnace 100 and a surface temperature of the heating furnace 100 .

In the microwave heating method, as described above, the microwave sensitive heating device 220 is provided on the surface of the heating furnace 100 to heat the heating furnace 100 while generating heat. The temperature of the surface of the heating furnace 100 may be measured to be higher than the internal temperature of the heating furnace 100 . However, since the raw material is located and heated inside the heating furnace 100, it may be desirable to accurately measure the temperature inside the heating furnace 100 in order to measure the temperature at which the raw material is heated.

Then, the control unit 153 controls the output of the microwave transmission device 210 in the heating furnace 100 based on the input information and the temperature information, or in the case of a high frequency induction heating method, high frequency induction. You can control it.

That the control unit 153 controls high-frequency induction may mean controlling the amount of current to flow through the coil or controlling whether or not to flow current. In addition, the controller 143 controls the output of the microwave transmitter 210 means that the controller 153 varies the frequency of the microwave output by the microwave transmitter 210, or It may mean that the output range, which is the range that the microwave reaches from the microwave transmitter 210, is different.

For example, the control unit 153 may control the microwave transmission device 210 to output microwaves according to the input information input by the input unit 151 . As described above, since the heating unit 100 has a heating temperature in the range of at least several hundred degrees Celsius, it is possible to enable the microwave sensitive heating device 220 to generate heat as much as possible at first. Thereafter, the control unit 153 compares the temperature information detected by the temperature sensor 152 with the input information, and transmits the microwave so that the temperature information can reach the input information, that is, the set temperature. Device 210 can be controlled.

For example, when the current temperature information sensed by the temperature sensor 152 is lower than the set temperature, the controller 153 controls the microwave sensitive heating device 220 to continuously generate heat, or The microwave transmitter 210 may be controlled to generate heat at a higher temperature.

When the current temperature information sensed by the temperature sensor 152 is higher than the set temperature, the control unit 153 transmits the microwave to prevent the microwave sensitive heating device 220 from generating any more heat. The device 210 may be controlled, or the microwave transmitting device 210 may be controlled so that the microwave sensitive heating device 220 generates heat at a lower temperature.

That is, the controller 153 controls the temperature information to reach the set temperature or maintains the temperature information at the current temperature through a feedback action on the temperature information obtained from the temperature sensor 152. By controlling the transmission device 210, it is possible to achieve easy and efficient temperature control. As described above, this control may be performed in the same or similar manner in high-frequency induction.

On the other hand, in the batch type waste plastic emulsification system 1, since a relatively large amount of raw material 10 is injected into the heating furnace 100 at one time compared to a general continuous type, the raw material inside the heating furnace 100 Even heating of (10) can be difficult. This problem is that the raw material 10 is rapidly carbonized on the inner wall side of the heating furnace 100, where the temperature is relatively high, and the central portion of the heating furnace 100 is not properly heated, which can greatly reduce the efficiency of the process. there is

Therefore, in the present invention, while the heating furnace 100 is being heated by the heating unit 200, the raw material inside the heating furnace 100 can be appropriately stirred so that the raw material 10 can be evenly heated. can do.

5 is a view for explaining a stirring device of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

Referring to FIG. 5 , a stirring device 110 may be provided inside the heating furnace 100 .

The stirring device 110 is implemented to include at least one wing, so that the raw material inside the heating furnace 100 can be stirred by rotation. Although the figure shows a stirring device 110 equipped with three blades having different lengths, the shape of the stirring device 110 is not necessarily limited to this shape.

In addition, when the stirring device 110 is formed of a metal material having excellent thermal conductivity, the stirring device 110 itself may perform the function of the exothermic inductor 230 described above. That is, while the stirring device 110 itself for stirring the raw materials 10 receives heat and heats, the raw material 10 located relatively far from the inner wall of the heating furnace 100 is stirred by the stirring device 110. Heating can be done at the same time.

On the other hand, for the thermal decomposition of the raw material 10 such as waste plastic, whether batch (or intermittent) or continuous, the formation of air flow inside the heating furnace 100 or the transfer furnace in which the raw material 10 is heated may be very important. .

In the case of the continuous type, while the raw material 10 is transported through the screw provided in the conveying furnace, an airflow is naturally formed and the gas generated by heating the raw material 10 can be smoothly discharged, but a general batch type (or In the case of the intermittent type), an airflow is formed only with the gas generated by heating the raw material 10, so the reduction rate is relatively low, and as a result, the quality of the produced reclaimed oil may also be lowered.

Therefore, the present invention is intended to provide a technical idea capable of increasing efficiency by forming an appropriate airflow in the heating furnace 100 even in a batch (or intermittent) system.

6 is a view for explaining nitrogen injection of a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

Referring to FIG. 6 , a nitrogen line may be provided to communicate with the inside of the heating furnace 100 so that nitrogen can be supplied into the heating furnace 100 .

At this time, it may be preferable for natural airflow to be disposed at the end of the nitrogen line, that is, the nozzle discharging nitrogen into the heating furnace 100 to be located at the lower side of the heating furnace 100 . However, in this case, the nozzle may be clogged due to the raw material 10 being heated and melted. Therefore, a separate space in which a predetermined air pocket can be formed is formed in the portion where the nozzle is located inside the heating furnace 100, thereby preventing the molten raw material 10 from penetrating into the nozzle and injecting necessary nitrogen. You can make this happen smoothly.

This nitrogen injection may also be performed by the control system 150 described above.

According to one embodiment, the control system 150, after the heating of the heating furnace 100 is started, the surface of the heating furnace 100 or the internal temperature of the heating furnace 100 reaches a certain temperature In this case, a small amount of nitrogen may be injected at regular intervals.

On the other hand, according to the technical idea of the present invention, unlike the conventional batch-type (or intermittent-type) waste plastic emulsification system mainly using a burner, the heating unit 200 operates the heating furnace 100 in an electrical manner (eg, micro It is heated through a wave heating method and/or a high frequency induction heating method), so that step-by-step temperature management is possible compared to the prior art.

For example, the control system 150 may control the heating unit 200 to heat the heating furnace 100 at a different temperature for each predetermined time interval or predetermined period. For example, in the control system 150, the heating unit 200 heats the heating furnace 100 at about 100°C for 1 hour, about 200°C for 1 hour, and about 300°C for 1 hour at 1 hour intervals. You can control what you can do. In addition to this, the control system 150 may control the heating temperature of the heating unit 200 to be increased in stages at various time intervals or at various cycles as needed.

As such, step-by-step temperature control becomes possible, compared to the prior art, in which the raw material 10 is heated only in a single temperature range due to the nature of the batch (or intermittent) system in which relatively various materials are easily included, and there are inevitably many carbonized residues. Through this, it is possible to have an effect of minimizing that the raw material 10 of each material is carbonized.

On the other hand, as described above, due to the nature of the batch type (or intermittent type) in which many raw materials 10 are injected and heated at once, the condensing unit 300 for condensing the gas generated by heating the raw materials 10 When the gas is condensed by the condensation unit 300, organic substances are accumulated in the plurality of gas passages provided inside the plurality of condensers included in the condensation unit 300, and the gas passage is clogged or the passage of the gas passage is narrowed. Caulk ( choke) may occur. A technical concept for preventing this coking phenomenon will be described with reference to FIG. 7 .

7 is a view for explaining a condensation unit for preventing coking in a batch-type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

First of all, briefly describing the process of condensing the gas in the condensing unit 300, the inside of the first condenser among the plurality of condensers (eg, 310 and 320) provided in the condensing unit 300 is described above. As such, a plurality of gas flow passages through which the gas is introduced may be provided. It is implemented so that the gas flowing into the gas flow passages can be cooled and condensed by flowing cold water around the gas flow passages inside the plurality of condensers. there is.

At this time, in the process of softening the gas, the coking phenomenon may occur as organic matter accumulates in the gas passage and the gas passage is blocked or the gas transfer passage is narrowed.

When such a coking phenomenon occurs, the smooth inflow of the gas is hindered, and the internal pressure may increase, causing a risk of explosion. Therefore, when the coking phenomenon occurs, it is necessary to solve and/or mitigate the coking phenomenon in the corresponding gas flow path.

Conventionally, in order to solve this coking phenomenon, the tank or gas flow path (pipe) of the system is disassembled and cleaned, or the operation of the system is stopped and a separate cleaning liquid (eg, alkali, acid, chlorine agent and / or surfactant, etc.) is used. The inlet method has been mainly used.

In this conventional method, if the coking phenomenon occurs even during the heating of the raw material 10, the operation of the system is completely stopped in any case and the disassembly of the device is required, resulting in a decrease in efficiency and an increase in incidental costs. did

The present invention solves the above problems by providing a technical idea capable of solving the coking phenomenon by using the primary oil generated by the condensation unit 300 during the process without stopping the emulsification process of waste plastic. can

For example, as described above, gas in which the raw material is vaporized from the heating furnace 100 may flow into the condensing unit 300 . In this case, each of the plurality of condensers (eg, 310 and 320) may be connected to inlet passages (eg, a and b) through which the gas is introduced.

According to an embodiment of the present invention, not all of the plurality of condensers (eg, 310 and 320) are normally used, but a first condenser (eg, 310) among the plurality of condensers (eg, 310 and 320) Only the gas can be introduced and condensed. For example, a flow path (eg, a) connected to the first condenser (eg, 310) is opened so that the gas can flow into the first condenser (eg, 310), and the second condenser (eg, 320) The process of emulsifying the waste plastic may be performed while the flow path (eg, b) connected to the second condenser (eg, 320) is disconnected so that gas can be introduced.

Then, when the coking phenomenon occurs in the gas flow path inside the first condenser (eg, 310), the control system 150 blocks the inflow of the gas into the first condenser (eg, 310), and the gas It may be introduced into the second condenser (eg, 320).

And while the condensation of the gas proceeds through the second condenser (eg, 320), the coking phenomenon of the first condenser (eg, 310) may be resolved.

In this case, even if the coking phenomenon occurs in the first condenser (eg, 310), there is no need to stop the operation of the system for cleaning the first condenser (eg, 310).

In addition, according to the technical idea of the present invention for this purpose, a conventional method such as disassembling the first condenser (eg, 310) in which the gas is no longer introduced from the heating furnace 100 or injecting a separate cleaning solution Alternatively, the coking phenomenon of the first condenser (eg, 310) may be solved by using the emulsification process of waste plastic.

For example, a supply passage through which the primary oil stored in the oil tank T can be supplied to the plurality of condensers (eg, 310 and 320) is connected, and the first condenser (eg, 310) where the coking phenomenon occurs ), it is possible to solve the coking phenomenon occurring in the first condenser (eg, 310) by the primary oil while the primary oil is introduced into the ).

The primary oil may be stored in the oil tank (T) and supplied to the corresponding condenser when the coking phenomenon occurs, but preferably, the primary oil is heated by the oil tank (T), It may be more effective to solve the coking phenomenon by supplying the heated primary oil to the condenser where the coking phenomenon has occurred.

At this time, for heating the oil tank, the aforementioned microwave transmitter 210 and the microwave sensitive heat generator 220 may be used.

Meanwhile, in order to determine whether the coking phenomenon has occurred in the gas passages in the plurality of condensers (eg, 310 and 320), the batch-type waste plastic emulsification system 1 with improved efficiency detects the flow rate of the gas passages. A flow rate sensor (not shown) may be further included.

According to one embodiment, the flow rate sensor (not shown) may be implemented as a predetermined 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 the gas flowing in a certain section.

The flow rate detecting unit (not shown) detects whether or not the coking phenomenon occurs based on the change in the flow of gas inside the gas flow path, which changes when the passage area of the gas flow path 10 is narrowed due to the coking phenomenon occurring in the gas flow path. can judge In addition, the batch-type waste plastic emulsification system 1 with improved efficiency is configured to inflow/block the gas to/from each of the plurality of condensers (eg, 310 and 320) according to the determination result of the flow rate sensor (not shown). opening and closing) can be controlled.

On the other hand, when the gas generated by being heated in the heating furnace 100 is condensed in the condenser 300, uncondensed gas (hereinafter, referred to as waste gas) may exist.

In addition, among gases generated in the process of being heated in the heating furnace 100, gases generated when the raw material 10 is not heated at a sufficient temperature have difficulty condensing. For example, it may be a gas generated while the temperature of the heating furnace 100 rises when the raw material 10 is put into the heating furnace 100 and heating starts.

On the other hand, after the gas is condensed in the condensing unit 300, waste gas may be generated even in the process of finally refining oil (recycled oil). For example, primary oil produced by condensing first vaporized gas is stored in the oil tank T, and refined oil can be produced by heating and condensing the stored primary oil again. Even during the purification process, uncondensed waste gas may be generated.

Conventionally, such waste gas is simply discharged or discharged after filtering pollutants through a separate purification system such as a scrubber.

However, such waste gas is generated in the process of thermal decomposition of waste plastic, etc., which is a raw material, and when it is discharged, attention is required because environmental pollution may occur.

Therefore, the present invention can utilize the waste gas generated during the emulsification process to enable more efficient use of the produced energy.

8 is a view for explaining waste gas utilization of a batch type waste plastic emulsification system with improved efficiency according to an embodiment of the present invention.

Referring to FIG. 8, as described above, the heating furnace 100, the condensing unit 300, and/or the primary oil generated by the condensing unit 300 are purified to produce final oil (recycled oil). Waste gas generated from the purification unit 400 may be collected into a predetermined energy production system 500 through a line connected to each component.

According to one example, the energy production system 500 may produce various energies using thermal energy generated by burning such waste gas.

For example, the energy production system 500 may generate hot water while burning waste gas or may generate warm air by using a separate blower. Here, the warm air may refer to air itself heated in the process of burning waste gas in the energy production system 500 or air heated by the hot water.

In addition, the hot water generated by the energy production system 500 by burning the waste gas can be supplied to a system such as a power generation device that generates electricity using hot water or a boiler that requires hot water itself, as well as the generation of warm air as described above. may be

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

Claims (2)

In the batch type waste plastic emulsification system,
A heating furnace in which raw materials input through a raw material inlet formed on one side are stored;
a heating unit for heating the raw material put into the drum;
a control system for controlling heating of the heating unit; and
A condensing unit for condensing gas generated from the raw material heated by the heating unit to produce primary oil,
The control system,
When the heating furnace reaches the first temperature by controlling the heating part, the first temperature is maintained for a predetermined period of time, and when the heating furnace is heated to reach the second temperature, the second temperature is maintained for a predetermined period of time, and then the heating furnace is A batch-type waste plastic emulsification system with improved efficiency of maintaining the third temperature for a predetermined time when heated to a third temperature.
The method of claim 1, wherein the batch type waste plastic emulsification system with improved efficiency,
Further comprising a nitrogen line capable of injecting nitrogen through the lower end of the heating furnace,
Inside the heating furnace, a space for forming an air pocket is provided at a position corresponding to the nozzle of the nitrogen line,
The control system,
A batch-type waste plastic emulsification system with improved efficiency for controlling nitrogen to be injected through the nitrogen line at regular intervals when the internal temperature of the heating furnace is above a certain level.

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