KR102357846B1 - Piston type dosing device for producing refined oil using used plastic - Google Patents

Abstract

The present invention relates to a raw material supply input system of a waste plastic emulsification device and a supply method thereof, wherein a process of supplying a raw material to a reactor (300) by a piston (210) while removing unnecessary air input together with the raw material by a pressurization chamber (P) can be continuously and repeatedly performed, thereby preventing the risk of explosion and environmental pollution, and maximizing a process operation rate.

Description

Raw material input system for waste plastic emulsifier {PISTON TYPE DOSING DEVICE FOR PRODUCING REFINED OIL USING USED PLASTIC}

The present invention is a technical field related to an input device for an emulsification treatment device for waste plastics. In more detail, a pressurization chamber (P) is installed to remove the air injected together with the raw material (waste plastic, etc.), thereby preventing the risk of ignition that may occur during the raw material input process, and transferring the raw material to the piston 210 in the reactor 300 ), it is a technical field related to the raw material input system of the waste plastic emulsifier, which can prevent the combustible phenomenon of raw materials that may occur in the conventional screw input method.

In modern times, a large amount of plastic waste is generated every day in our daily life, and with the spread of the Internet, not only products but also food and beverages are ordered for delivery, resulting in a sharp increase in disposable plastic waste every year. Natural decomposition during landfilling of these waste plastics generally takes at least 500 to 100 years, causing not only environmental pollution problems, but also more serious environmental pollution that causes the generation of harmful substances such as dioxins, nitric acid compounds, and hydrochloric acid compounds even when incinerated. can do.

Although such waste plastics increase rapidly every year, excessive costs are required for the recovery and disposal process of the waste plastics, and due to the inefficiency of the process following regeneration, although the reduction to crude oil is relatively simple, it is not properly treated. The existing waste plastic emulsification process is a batch-type input, so mechanical facilities are large and the pyrolysis requirement of waste plastics is very large, so the efficiency of mechanical facilities is actually low, making it difficult to apply in the field.

In particular, in the waste plastic emulsification process, heat must be applied after the waste plastic is put in. Depending on the type of raw material, heating environmental conditions must be satisfied at 200°C or higher for solidification, 400°C or higher for liquefaction, and 1000°C or higher for gasification. . In addition, since it is a type of waste, it is difficult to recover pure PE and PP, and a large amount of harmful gas is generated during the pyrolysis process in the situation that PVC is mixed with waste plastic and collected.

In this regard, in the process of supplying a certain amount of waste plastic to an emulsifying device for liquefying waste plastic and pyrolyzing it, the amount of waste plastic that can be input is determined. In this process, the emulsification device heated to 400℃ or higher must be heated for about 6 hours or more, and even after temperature reduction, the device through sufficient discharge of gas due to the risk of explosion due to the effects of harmful gas and oxygen in the air that may leak due to the opening of the inlet. It takes a considerable amount of time to recover. That is, the continuous process of the process is not easy, so the process efficiency and economic feasibility are very low, so it is difficult to apply it to the actual field as described above.

In addition, in the emulsification process of waste plastics, heat is applied in a low oxygen, preferably anoxic environment, and low molecular weight is decomposed in a reducing atmosphere. The yield of the decomposed raw material depends on the pyrolysis temperature and rate. However, there is a problem in that high-purity liquefied fuel cannot be discharged by the air injected together in the process of inputting the waste plastic, and the thermal decomposition temperature cannot be maintained for a long period of time, thereby reducing production efficiency.

On the other hand, the raw material including the input waste plastic is introduced into the reactor 300 while rotating the screw bar. At this time, part of the raw material is dried on the screw bar and the input process is interrupted due to the flammable phenomenon, which impairs the continuity of the process and causes a breakdown, thereby reducing the process efficiency.

Accordingly, the present invention intends to provide an input system of a continuous waste plastic emulsification apparatus in order to solve the above-described problems. Specifically, by arranging a pressurization chamber (P) at the rear end of the inlet of the emulsifying device, when raw materials including waste plastics are input, the air introduced together with the raw materials is removed to reduce the risk of ignition, so that continuous raw material input is possible. In addition, the supply unit 200 is separated from the pressure chamber P by a door at the rear end of the pressure chamber P and a piston 210 to prevent interference between the raw material and the input device, thereby converting the continuously input material into the reactor. (300) can be transmitted smoothly.

The raw material input system of the waste plastics emulsification apparatus according to an aspect of the present invention for achieving the above technical problem, in the waste plastics emulsification system, a pressure chamber (P) including a first inlet 100 for inputting raw materials, The supply unit 200 disposed at the rear end of the pressurization chamber P and including a second inlet 201 through which the raw material injected into the pressurization chamber P is input, and the raw material of the supply unit 200 are inputted and pyrolyzed. furnace 300; but, the pressurization chamber (P) includes an inert gas input unit 110 and an air discharge unit 120, but the inert gas input unit 110 and the air discharge unit 120 are It is arranged to be inclined downwardly inward from the side wall of the pressure chamber P, and the supply unit 200 has a cylinder 220 structure, but the raw material input from the pressure chamber P is transferred to the reactor 300 by the piston 210. And, it is characterized in that the cooling unit 230 is placed on a part of the inner wall to cool the cylinder 220 that is heated when the raw material is delivered.

Further, the piston 210 is connected to the piston 210 head 211 disposed inside the cylinder 220 to press the piston 210 head 211 and supply raw materials to the reactor 300, but the piston ( 210) The first gasket 212 is disposed on the head 211 to seal gas and raw materials, and the cylinder 220 accommodates the expansion and contraction of the reactor 300 by heat with the expansion joint 234, and the outer wall The second gasket 221 is disposed on a part of the second gasket 221 to seal the harmful gas generated by the movement of the piston 210, and the second gasket 221 formed in a circular shape causes the emulsification generated in the reactor 300. It includes a sealing device to block the gas, characterized in that it can cool the inner wall of the cylinder 220.

Furthermore, the inert gas input unit 110 is disposed downward from the outer wall of the pressure chamber P toward the inner center so that the inert gas passes through the dust of the raw material and is dispersed into the pressure chamber P, and the inert gas input unit 11 And the air discharge unit 120 has a ratio of 2:1, and the air discharge unit ( 120) is opened to discharge air.

The raw material input method for emulsifying waste plastic according to another aspect of the present invention includes (a) a raw material input step of opening the first inlet 100 and inputting the raw material into the pressurization chamber P, (b) an inert gas input unit After inputting the inert gas to (110), an air removal step of discharging air to the air discharge unit 120, (c) in a state in which the air is removed, open the second inlet 201 to the supply unit 200 A raw material transfer step of inputting the raw material and (c) a raw material supply step of supplying the raw material to the reactor 300 by the piston 210; However, in (b), the input inert gas and the exhaust air have a volume ratio of 3 to 4:1, and when the air is discharged, the atmospheric pressure of the pressurized chamber (P) is 1.5 to 1.7 bar, and inert according to the change in atmospheric pressure The gas input unit 110 and the air discharge unit 120 are automatically turned on and off, so that the inert gas is input and air is discharged, and (d) is the first gasket outside the piston head 211 and the cylinder 220 . (212) and the second gasket 221 seals the gas due to thermal decomposition, and the cooling unit 230 maintains the temperature inside the cylinder 220 at 90-100° C. It provides a raw material supply method of the waste plastic emulsification apparatus according to any one of claims 3 to 4.

The input system of the waste plastic emulsification apparatus according to an embodiment of the present invention removes the air introduced together with the raw material by the pressurization chamber (P) to allow continuous raw material input, reducing the number of openings in the reactor 300 to the reactor By preventing the 300 from being exposed to the outside air, it is possible to maximize the operation rate.

In addition, since the emulsified gas of the reactor 300 does not leak to the outside, it is possible to remove the risk of explosion and prevent environmental pollution due to unpurified harmful gas.

Furthermore, by configuring the supply unit 200 in a piston 210 manner, continuously input raw materials can be smoothly delivered to the reactor 300, thereby shortening the cooling time of the device and eliminating the risk of ignition, as well as eliminating the risk of ignition of the device by the raw materials. It can prevent malfunction.

In addition, the pressure chamber (P) and the supply unit 200 are separated and the pretreatment process of removing air from the input material can be performed, so that the emulsification process can be smoothly performed by removing the air input from the supply unit 200 to the reactor 300 . can proceed.

1 is a schematic configuration diagram of a raw material input system of a waste plastic emulsification apparatus according to an embodiment of the present invention.
2 is a schematic partial view of the piston 210 including the first gasket 212 of the raw material input system of the waste plastic emulsification apparatus according to an embodiment of the present invention.
3 is a schematic partial view of the second gasket 221 of the raw material input system of the waste plastic emulsification apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of the raw material input system of the waste plastic emulsification apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

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.

1 is a schematic configuration diagram of a raw material input system of a waste plastics emulsification apparatus according to an embodiment of the present invention, and FIG. 2 is a piston 210 of a raw material input system of a waste plastics emulsification apparatus according to an embodiment of the present invention. It is a schematic partial view of the head 211, and FIG. 3 is a schematic partial view of the second gasket 221 of the raw material input system of the waste plastic emulsification apparatus according to an embodiment of the present invention.

1 to 3 , the raw material input system of the waste plastic emulsification apparatus according to an embodiment of the present invention macroscopically includes a pressurization chamber P, a supply unit 200, and a reactor 300, and specifically includes an inert gas input unit 110 and an air discharge unit 120 , and the supply unit 200 includes a piston 210 and a cylinder 220 .

The conventional waste plastic emulsifier is a method in which raw materials are put into the reactor 300 through a hopper and then pyrolyzed to liquefy. It corresponds to the batch input device and method of Specifically, in the batch input method, the raw material is directly injected into the reactor 300, and the temperature of the inlet is increased to about 400° C. by the gases generated in the pyrolysis process. Therefore, if the inlet is opened to re-inject the raw material, there is a possibility of ignition or explosion due to external air and pyrolysis gas. For this purpose, the emulsification apparatus by the batch injection method requires 6 to 10 hours of cooling after completion of one thermal decomposition. After that, fuel is added and the furnace is reheated to emulsify the raw material.

Therefore, in the batch input method, the process is cut by the cooling time and harmful gas is leaked whenever the reactor 300 is opened, causing the risk of explosion and environmental pollution. lower it

In addition, in the case of the conventional emulsifying apparatus, the method of injecting the raw material into the reactor 300 is made by the rotation of the screw bar, and the rotational movement of the screw is disturbed by the flammable phenomenon in which foreign substances contained in the waste plastic, which is waste, are wound around the screw. This not only interferes with the supply of raw materials, but also accelerates the aging of the equipment.

In one embodiment of the present invention, in order to solve the above-mentioned problems, a pressure chamber (P) and a supply unit 200 are placed at the tip of the reactor 300 to remove oxygen before input to the reactor 300 to reduce cooling time and reheating time. It is possible to continuously emulsify waste plastics by saving and eliminating the interruption of the process.

Referring to Figure 1, the present invention is a pressurization chamber (P) including a first inlet 100 for injecting raw materials,

The supply unit 200 disposed at the rear end of the pressurization chamber P and including a second inlet 201 through which the raw material injected into the pressurization chamber P is input, and the raw material of the supply unit 200 are inputted and pyrolyzed. It includes a furnace 300 .

In more detail, the pressurization chamber P includes a first inlet 100 through which the raw material is put in the upper part, and the first inlet 100 is opened to insert the raw material. The first inlet 100 may be an opening and closing device, for example, a slide gate, and the shape and input method of the inlet are not limited. At this time, external air is introduced into the pressurization chamber (P) together with the raw material. The outside air contains oxygen to increase the possibility of explosion when in contact with the harmful gas discharged from the reactor 300 . Therefore, in an embodiment of the present invention, an inert gas is introduced into the pressurization chamber P in order to discharge the outside air to pressurize the indoor part, so that the pressurized air combined with oxygen can be discharged to the outside. To this end, an inert gas input unit 110 and an air discharge unit 120 are included in the outer wall and the inner wall. At this time, it is preferable that the inert gas input unit 110 and the air discharge unit 120 are disposed to be inclined downward from the outer wall of the pressurization chamber P toward the inner center. Since the raw material, which is a waste, contains a large amount of dust, the inert gas must pass through it and be smoothly introduced into the pressurization chamber (P). The inert gases to be formed can be evenly dispersed without interfering with each other. The inert gas is not limited and may be, for example, nitrogen.

Preferably, the inert gas input unit 110 and the air discharge unit 120 may have a ratio of 2:1. Considering the amount of gas that is increased after the air introduced together with the raw material comes into contact with the inert gas, the number of the inert gas input unit 110 and the air discharge unit 120 may be in a ratio of 2:1. For example, when 10 m ³ of inert gas is introduced, the discharged air is about 4 m ³ . Accordingly, in consideration of the discharged air, the number of the inert gas input unit 110 and the air discharge unit 120 may be mutually adjusted.

Furthermore, a portion of the air input unit 110 may measure the increased pressure inside the pressure chamber P and open the discharge unit 120 under a set pressure condition to discharge air combined with oxygen. In general, the waste plastic emulsifier measures the oxygen concentration at the entrance of the open door before opening and opens the open door.

In the case of the conventional emulsification system by the batch input method, it is ok to measure the oxygen concentration at each time point where the emulsification is finished because it takes cooling time. ) may be an automatic opening system that can open the discharge unit 120 when the set pressure is reached by dataizing the elevated pressure and the oxygen concentration at the time of discharge (about 0.1% of the oxygen concentration in the atmosphere). The input and discharge methods of the above-described inert gas input unit 110 and air discharge unit 120 are not particularly limited, and may be, for example, a solenoid valve type.

As described above, when the air discharge is completed, the raw material is discharged through the second inlet 201 leading to the supply unit 200 at the lower end of the pressurization chamber P. The second inlet 201 may be an opening/closing device, for example, a slide gate, and the shape and input method of the inlet are not limited.

On the other hand, the supply unit 200 has a cylinder 220 structure, but the raw material input from the pressure chamber P is transferred to the reactor 300 by the piston 210, and a cooling unit 230 is placed on a part of the inner wall to deliver the raw material. A cooling unit 230 for cooling the heated cylinder 220 may be included.

In more detail, the piston 210 may be connected to the piston 210 head 211 disposed inside the cylinder 220 to pressurize the piston 210 head 211 and supply raw materials to the reactor 300 . . At this time, by disposing the first gasket 212 on the head 211 of the piston 210 , it is possible to seal the gas and raw materials that may leak to the outside when the piston 210 is pressurized.

In addition, the cylinder 220 is disposed just before the high temperature (350 ℃ ~ 500 ℃) reactor 300 and expands by thermal expansion under pyrolysis conditions, an expansion joint (234, Expansion Joint) capable of accommodating the amount of expansion includes

That is, by arranging the expansion joint 234 on a part of the outer wall of the cylinder 220, it is possible to accommodate the expansion and contraction of the cylinder by pyrolysis, that is, the reactor, and as shown in FIG. By disposing the second gasket 221 , it is possible to seal the harmful gas generated by the pressure of the piston 210 . Accordingly, the emulsified gas generated in the reactor 300 may be blocked through the first gasket 212 and the second gasket 221 .

The first gasket 212 may be an input piston 210 formed to be sealed with the first gasket 212 for pushing the raw material into the reactor 300 by the piston 210 reciprocating device. Therefore, if the piston 210 of the input method for pushing the raw material into the reactor 300, the method is not particularly limited. For example, as shown in FIG. 2 , the piston 210 , the piston head 211 , a fastening bolt for fastening the piston head to the reciprocating shaft, a gasket formed of rubber and Teflon, and a gasket cover for holding the gasket may be included.

The second gasket 221 is not particularly limited as long as it is a method capable of sealing harmful gases, for example, a ceramic gakta gasket 221 formed in a circular shape as shown in FIG. 3 , a sealing device lid for pushing the gasket, sealing It may consist of a bolt holding the device lid.

Further, the thermal decomposition of the raw material in the reactor 300 is completed at about 400 ℃, it is preferable that the temperature of the supply unit 200 for the smooth supply of the raw material by the piston 210 is about 90 ~ 100 ℃. Therefore, it is preferable to arrange a cooling furnace on a part of the inner wall of the supply passage in order to adjust the internal temperature of the supply passage located at the immediate stage of the reactor 300 to about 90 to 100°C.

The cooling unit 230 includes a cooling water inlet 231 for injecting cooling water into a part of the cylinder wall in a cooling jacket method, a cooling water outlet 231 from which cooling water comes out of the cooling jacket, and the fuel residue from the cylinder. It may include a residue removal unit 240 .

An embodiment of the present invention describes a raw material input method by the raw material input device of the above-described waste plastic emulsification device.

(a) a raw material input step of opening the first inlet 100 to input a raw material into the pressurization chamber P, (b) introducing an inert gas into the inert gas input unit 110, and then the air discharge unit 120 By the air removal step of discharging air to the furnace, (c) a raw material transfer step of opening the second inlet 201 in a state in which the air is removed and inputting the raw material into the supply unit 200, and (d) the piston 210 A raw material supply step of supplying the raw material to the reactor 300; includes

In (b), the inputted inert gas and the exhausted air have a volume ratio of 3 to 4:1, and when the air is discharged, the pressure of the pressurized chamber (P) is 1.5 to 1.7 bar, and the inert gas input unit and air according to the amount of air pressure The discharge unit is automatically turned on and off, so that the inert gas can be introduced and air is discharged.

In detail, after sealing the first inlet 100 to remove oxygen injected into the pressurization chamber P together with the raw material, the inert gas is introduced into the pressurization chamber P through the inert gas input unit. The inert gas is not particularly limited, and nitrogen may be used, for example. Therefore, as a result of the reaction of the input inert gas with oxygen in the air, the internal pressure of the pressurization chamber P increases. The pressure measuring unit 121 of the air discharging unit 120 measures the amount of pressure change and opens the air discharging unit 120 under a set pressure condition to discharge a predetermined amount of air.

To prevent the risk of explosion, the oxygen concentration in and around the first inlet of the waste plastic emulsifier must satisfy about 10% of the oxygen concentration in the atmosphere, and it can be determined by measuring the oxygen concentration outside the outlet. The opening timing of the inert gas input unit 110 and the air discharge unit 120 may be set by dataizing the amounts of inert gas and discharged air introduced into the pressurization chamber P and the oxygen concentration near the first inlet at this time. For example, when the oxygen concentration in the atmosphere is 23%, it is preferable that the oxygen concentration inside and outside the inlet is about 2.3%, and the amount of inert gas and discharged air introduced into the pressurization chamber (P) and the oxygen concentration near the inlet at this time When phosphorus 2.3% or less is satisfied, the air discharge unit 120 may be opened, discharged, and input of inert gas may be automatically performed.

At this time, the ratio of the input inert gas and the discharged air volume is preferably 3 to 4:1, and the pressure of the pressurization chamber P may be 1.5 to 1.7 bar. Accordingly, the pressure chamber P may be automatically operated according to the ratio of the inert gas, the discharged air, and the pressure inside the pressure chamber P. Further, when the raw material is introduced into the pressure chamber P and oxygen is removed under a certain condition, the raw material is discharged to the supply unit 200 through the second inlet 201 . In this case, the opening/closing time of the second inlet 201 may be adjusted by converting the amount of the input material into data. For example, the raw material from which unnecessary air is removed may be transferred through the second inlet 201 for about 5 seconds.

When the raw material is transferred to the supply unit 200 , the step of supplying the supply unit 200 to the reactor 300 may be automatically performed. In detail, the supply unit 200 has the shape of a cylinder 220 , and may supply raw materials to the reactor 300 by the operation of the piston 210 . That is, a supply path is disposed just before the reactor 300 to push the raw material into the reactor 300 .

On the other hand, the liquefaction temperature of the waste plastic in the reactor 300 is about 400 ℃. It is preferable that the supply unit 200 just before the reactor 300 prevents steam generation and maintains a smooth piston 210 operating temperature condition in the range of about 90°C to 100°C. However, since the reactor 300 can be expanded and contracted by the thermal decomposition temperature condition of the reactor 300, the expansion joint 234 on the outside of the cylinder 220 can accommodate the expansion and contraction of the reactor 300. Therefore, the raw material can be smoothly supplied to the reactor 300 by the piston 210 . At this time, it is preferable to keep the temperature of the supply unit 200 constant at the above temperature, so that the temperature of the supply unit 200 can be maintained by the cooling unit 230 of the wall surface of the supply unit 200 .

In addition, in (d), the piston 210 supplies the raw material from the supply unit 200 to the reactor 300 while pressurizing the raw material, which is generated by thermal decomposition to the piston 210 and the head 211 with the first gasket 212 . It is possible to prevent the outflow of gas to the outside. In addition, the gas due to thermal decomposition may be sealed by the second gasket 221 outside the cylinder 220 .

Processes (a) to (d) described above are repeated automatically and continuously, and the risk of accidents can be eliminated.

According to the experimental example of the present invention, in the above-described process, the time required for one cycle was measured to be about 30 to 40 seconds, and the idle time between one operation process and the next operation process was adjusted by adjusting the It is possible to adjust the input amount of raw materials.

In detail, the specific gravity of waste plastic may vary depending on the type and composition of waste plastic, and the actual amount of waste plastic input is idle after measuring the amount of raw material that can be input in one cycle by inputting the actual raw material. By determining the idle time, the actual amount of waste plastic input can be determined.

That is, the raw material input system of the waste plastic emulsification apparatus according to the embodiment of the present invention can continuously operate the reactor 300 only by injecting a predetermined amount of raw material into the pressurization chamber (P). Therefore, when the raw material is put into the pressurization chamber P, unnecessary air can be removed, and the raw material can be supplied to the reactor 300 by the movement of the piston 210 of the supply passage thereafter, and not only maintain the continuous supply condition of the raw material, but also harmful By sealing the gas emission, the risk of explosion is eliminated and waste plastic can be continuously liquefied, maximizing process efficiency.

P pressurized chamber
100 1st inlet
110 Inert gas inlet
120 air outlet
121 pressure measuring part
200 supply
201 2nd inlet
210 piston
211 piston head
212 first gasket
220 cylinder
221 second gasket
230 cooling
231 coolant inlet
232 coolant outlet
240 Cylinder debris removal unit
234 Expansion Joint
300 reactor
A Piston movement direction

Claims (4)

In the waste plastic emulsification system,
a pressure chamber (P) including a first inlet (100) for inputting raw materials;
a supply unit 200 disposed at the rear end of the pressurization chamber P and including a second inlet 201 through which the raw material injected into the pressurization chamber P is put; and
a reactor 300 in which the raw material of the supply unit 200 is input and thermally decomposed; including,
The pressurization chamber (P) includes an inert gas input unit 110 for introducing an inert gas and an air discharge unit 120 through which the input inert gas is substituted with air and the substituted air is discharged, but the inert gas input unit ( 110) is disposed downward from the outer wall of the pressure chamber P toward the inner center so that the inert gas passes through the dust of the raw material and is dispersed into the pressure chamber P, and the inert gas input unit 110 and the air discharge unit 120 are It is a ratio of 2:1, and the pressure measuring unit 121 is placed on one side of the discharge unit to measure the pressure in the pressure chamber (P), and the air discharge unit 120 is opened under the set pressure condition to discharge air,
The supply unit 200 has a cylinder 220 structure, and the raw material input from the pressure chamber P is pushed to the reactor 300 by the piston 210 and transferred, and a cooling unit 230 is placed on a part of the inner wall to deliver the raw material. Cooling the cylinder 220 to be heated
The piston 210 is connected to the piston head 211 disposed inside the cylinder 220 to pressurize the piston head 211 and supply raw materials to the reactor 300 , but a first gasket is provided to the piston head 211 . 212 is disposed to seal gas and raw materials;
The cylinder 220 accommodates the expansion and contraction of the cylinder 220 by heat with an expansion joint 234 , and a second gasket 221 is disposed on a part of the outer wall to seal the harmful gas generated by the movement of the piston 210 . It includes a sealing device for blocking the emulsified gas generated in the reactor 300 by a second gasket formed in a circular shape, and includes a cooling unit 230 that can cool the inner wall of the cylinder 220 A raw material input system for a waste plastic crematorium, characterized in that delete delete (a) a raw material input step of opening the first inlet (100) and inputting the raw material into the pressurization chamber (P);
(b) After the inert gas is introduced into the inert gas input unit 110, the inert gas passes through the dust of the raw material and is dispersed downwardly into the pressurization chamber P to replace air and inert gas, and the substituted air is discharged from the air outlet Air removal step discharged upward to (120);
(c) a raw material transfer step of injecting raw materials into the supply unit 200 by the pressure of the inert gas dispersed downward by simultaneously opening the second inlet 201 in a state in which the air of (b) is removed; and
(d) a raw material supply step of pushing and supplying the raw material to the reactor 300 by the piston 210;
In (b), the input inert gas and the discharged air have a volume ratio of 3 to 4:1, and when the air is discharged, the pressure of the pressurized chamber (P) is 1.5 to 1.7 bar, and according to the change in atmospheric pressure, the pressure measuring unit 121 ), when the pressure in the pressure chamber (P) is a set pressure condition, the inert gas input unit 110 and the air discharge unit 120 are automatically turned on and off, so that the inert gas is input and air is discharged,
The (d) seals the gas due to thermal decomposition by the first gasket 212 and the second gasket 221 outside the piston 210, the head 211 and the cylinder 220 so that the harmful gas is exposed to the outside. A method of supplying raw materials for a waste plastics emulsifying device by the raw material input system of the waste plastics emulsifying device of claim 1, characterized in that the cooling unit 230 maintains the temperature inside the cylinder 220 at 90-100° C. .

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