KR102571736B1 - Oil production method using waste plastic - Google Patents

Abstract

The present invention relates to an oil production method using waste plastic, in which the oil production method comprises: a raw material input step of inputting waste plastic into an input part and inputting the waste plastic discharged from the input part into a pyrolysis furnace; a melting step of heating and melting the waste plastic input into the pyrolysis furnace by a burner, and then heating and gasifying the waste plastic until pyrolysis is performed; a distillation step of distilling a gas fraction generated in the melting step using a distillation column; a liquefaction step of liquefying the gas fraction separated by the distillation column in the distillation step by passing the gas fraction through a condenser; and a cooling step of cooling the liquid liquified in the liquefaction step by passing the liquid through a cooler, transferring the liquid to a storage tank, and storing the liquid, wherein the input part of the raw material input step comprises: a weight detection unit which is opened at an upper part thereof, has an inlet port formed therein and an outlet port formed at a lower part thereof, and detects an internal input amount; and an opening unit for opening an internal passage, is connected to the weight detection unit, and the waste plastic stored in the input part is discharged through the outlet port by opening the opening unit when the input amount reaches +20 to 30 wt% above the lowest set value of a set weight range or reaches -20 to 30 wt% above the highest set value. According to the present invention, it is possible to shorten a process time by automating the input of the waste plastic, which is a target object.

Description

Oil production method using waste plastic}

The present invention relates to a method for producing oil using waste plastics, and more particularly, oil production using waste plastics to extract and recycle oil from plastic containers and plastic packaging materials discarded as waste through an emulsification process. It's about how.

In general, with the advancement and diversification of industries, the amount of use of various polymer compound materials is increasing, and the huge amount of use and disposal of waste plastics, waste fibers, etc. causes waste of manufacturing and disposal costs in proportion to it.

Such waste polymer compounds are obtained from petroleum resources and have the characteristics of being regenerable through appropriate thermal decomposition, but the regeneration activity is limited to an extremely weak level due to the high cost of installing regeneration facilities and regeneration costs.

Due to this reason, the amount of regeneration is extremely small compared to the amount of polymer compounds used and discarded, so most of them are discarded by incineration or landfill. When incinerated, pollutants such as hydrogen chloride (HCl), sulfur oxides (SOx), nitrogen oxides (NOx), and dioxin are discharged, which causes serious contamination of the air or soil.

In order to prevent such waste treatment and environmental pollution, various measures have been devised, and among them, a method for extracting oil such as pyrolysis oil from waste plastic and recycling it has emerged.

Waste plastics recycled to extract pyrolysis oil include PP (Poly Propylene), PE (Poly Ethylene), and PS (Poly Styrene).

PP, PE, and PS are pyrolyzed to produce about 10% of pyrolysis gas, 80% of pyrolysis oil, and 10% of carbon.

Of the pyrolysis oil, 10% is light oil, the main component of which is naphtha, 80% is heavy oil, the main component of which is kerosene or light oil, and 10% is heavy oil, which contains a large amount of WAX components.

Light oil is a low boiling point material with a distillation temperature of less than 150 ° C and a flash point of less than 50 ° C. Vapor lock may occur in the burner during combustion.

Medium oil is a fuel with a distillation temperature of 150℃~350℃ and a flash point of 65℃~80℃. However, heavy oil is a material with a distillation temperature of 350 ° C or higher and has a high flash point and high viscosity, which is inconvenient for handling. Meanwhile, heavy oil can be used as fuel like bunker oil when heated to 50℃.

Waste plastic is put into a pyrolysis device and pyrolyzed to extract pyrolysis oil, that is, recycled oil.

The pyrolysis device needs to remove carbon generated after thermal decomposition of waste plastic in the pyrolysis tank. In this case, in order for people to enter the pyrolysis tank, the pyrolysis tank heated to 450 ° C must be cooled to room temperature.

Since about 12 hours of cooling time is required to naturally cool the heated pyrolysis tank, there is a disadvantage in that a lot of time is delayed from producing the primary pyrolysis oil to producing the secondary pyrolysis oil.

On the other hand, according to the prior art, since the pyrolysis furnace is closed to the outside due to the nature of gas extraction, once the extraction process is completed with the waste plastic once injected, it is cooled to discharge the residue, and then the waste plastic must be reheated, so the efficiency is quite low. There is a problem in that it is difficult to obtain a high yield due to the waste of useful materials because the gas that is not condensed and remains to the end among the obtained gases must be removed by incineration unless there is a separate storage facility.

Korean Registered Patent Publication No. 10-1890415

The present invention has been made to solve the problems of the prior art, and the process time can be shortened by automating the input of the object, and the time required for the cooling process can be significantly reduced by injecting nitrogen after pyrolysis, thereby improving work efficiency. The purpose is to provide an oil production method using waste plastic that can be improved.

An object of the present invention described above is to include a raw material input step of inputting waste plastic into an input unit and inputting the waste plastic discharged from the input unit into a pyrolysis furnace; a melting step of heating and melting the waste plastic put into the pyrolysis furnace with a burner and then heating and gasifying the waste plastic until pyrolysis is performed; a distillation step of distilling the gas fraction generated in the melting step using a distillation column; a liquefaction step of liquefying the fractional gas separated by the distillation column in the distillation step by passing it through a condenser; Including, a cooling step of passing the liquefied liquid in the liquefaction step through a cooler to cool it and then transporting it to a storage tank for storage, wherein the input part of the raw material input step is opened at the top to form an inlet and the bottom is formed with an outlet. It includes a weight sensing means for detecting the input amount inside and an opening and closing means for opening and closing the passage inside, and is connected to the weight sensing means, and the input amount reaches +20 to 30 wt% above the lowest set value of the set weight range. Alternatively, when -20 to 30 wt% is reached than the highest set value, the opening and closing means is opened so that the waste plastic stored in the input unit is discharged to the discharge port. Can be achieved by a method for producing oil using waste plastic there is.

The cooling process is characterized by injecting liquid nitrogen into an outer coil wound around an outer circumferential surface of the cooler to cool the cooler, and injecting liquid nitrogen into an inner coil formed inside the cooler to cool the liquid.

The cooler has a liquid nitrogen supply pipe formed therein, includes a liquid nitrogen storage container connected to an end of the liquid nitrogen supply pipe, and controls the supply amount of liquid nitrogen by measuring the internal temperature of the cooler and comparing it with a set temperature value. It is characterized in that it includes a measuring unit.

The liquefaction process includes a collection process for collecting the distillate gas separated by the distillation tower in the distillation process, a dispersing process for dispersing the collected oil gas in a vortex form while passing through a rotating screw, and a diameter of the dispersed vortex form oil gas A compression process in which the compressed dense gas is passed through a tube-diameter reduction part that is gradually reduced in size and converted into a dense gas flow; It is characterized in that the oil gas passing through is liquefied by passing it through a condenser.

According to the present invention, there is an effect that the process time can be shortened by automating the input of waste plastic, which is an object.

In addition, the time required for the cooling process can be significantly reduced by injecting liquid nitrogen after thermally decomposing the waste plastic, thereby improving work efficiency.

1 is a process chart showing a method for producing oil using waste plastic according to the present invention;
2 is a view showing the input part of the raw material input process of the oil production method using waste plastic according to the present invention;
3 is a view showing a cooler of an oil production method using waste plastic according to the present invention;
4 is an exemplary diagram showing a liquefaction process of an oil production method using waste plastic according to the present invention;
5 is a perspective view of a light blocking structure applied to the present invention;
6 is a perspective view showing a second side wall module of a light blocking structure;
7A to 7C are diagrams illustrating adjusting the size of the curvature of the second side wall module;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes can be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents or substitutes to the embodiments are included within the scope of rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only, and may be modified and implemented in various forms. Therefore, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various components, such terms should only be construed for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle.

Terms used in the examples are used only for descriptive purposes and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are the same as those commonly understood by one of ordinary skill in the art to which the present invention belongs. It has meaning. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative, so the present invention is not limited to the details shown. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. When 'includes', 'has', 'consists of', etc. mentioned in this specification is used, other parts may be added unless 'only' is used. In the case where a component is expressed in the singular, the case including the plural is included unless otherwise explicitly stated.

In interpreting the components, even if there is no separate explicit description, it is interpreted as including the error range.

In the case of a description of a positional relationship, for example, 'on top of', 'on top of', 'at the bottom of', 'next to', etc. Or, unless 'directly' is used, one or more other parts may be located between the two parts.

When an element or layer is referred to as “on” another element or layer, it includes all cases where another element or layer is directly on top of another element or another layer or other element intervenes therebetween. Like reference numbers designate like elements throughout the specification.

The size and thickness of each component shown in the drawings are shown for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

Each feature of the various embodiments of the present invention can be partially or entirely combined or combined with each other, and as those skilled in the art can fully understand, various interlocking and driving operations are possible, and each embodiment can be implemented independently of each other. It may be possible to implement together in an association relationship.

Among the accompanying drawings, FIG. 1 is a process diagram showing a method for producing oil using waste plastic according to the present invention, and FIG. 2 is a diagram showing an input part of a raw material input process of a method for producing oil using waste plastic according to the present invention. Figure 3 is a view showing a cooler of the oil production method using waste plastic according to the present invention, Figure 4 is an exemplary view showing the liquefaction process of the oil production method using waste plastic according to the present invention, Figure 5 is a view showing the present invention 6 is a perspective view showing a second side wall module of the light blocking structure, and FIGS. 7A to 7C are views showing adjusting the size of the curvature of the second side wall module.

The oil production method using waste plastic according to the present invention,

a raw material input step (S10) of introducing waste plastic into the input unit 20 and inputting the waste plastic discharged from the input unit 20 into a pyrolysis furnace;

A melting step (S20) of melting the waste plastic put into the pyrolysis furnace by heating it with a burner and then heating it until it is pyrolyzed to gasify it;

A distillation step (S30) of distilling the gas fraction generated in the melting step using a distillation column;

a liquefaction step (S40) of liquefying the fractional gas separated by the distillation column in the distillation step (S30) by passing it through a condenser;

A cooling step (S50) of passing the liquefied liquid in the liquefaction step (S40) through a cooler to cool it and then transferring it to a storage tank for storage (S50).

In the raw material input process (S10), PP (Poly Propylene), PE (Poly Ethylene), and PS (Poly Styrene) included in waste vinyl and waste plastic are input as raw materials.

In order to reduce the volume of the raw material, it is first heated and melted.

The melted raw material is introduced into the input unit 20, but is automatically discharged after a certain amount is input.

The input unit 20 of the raw material input step (S10) is opened at the top to form an inlet 202 and has an outlet 204 at the bottom and a weight sensing means 206 for detecting the input amount therein, An opening and closing means 24 for opening and closing the inner passage is included.

The inlet 202 is a hopper, the outlet is formed in the lower part of the hopper, and the weight sensor 206 is a weight sensor provided to detect the weight of the opening and closing means.

The opening/closing means 24 is horizontally coupled to the inner passage of the input unit 20, and is provided on the outside of the blocking plate 242 to be moved in the horizontal direction to open and close, and the blocking plate 242 to exert opening and closing power. It includes a drive unit 25.

The driving unit 25 is a normal motor, and the main gear 251 mounted on the shaft of the motor is geared to the rack gear 253 formed in the longitudinal direction of the blocking plate 242 to prevent horizontal movement of the blocking plate 242. will control

Preferably, the opening/closing means 24 is connected to the weight sensing means 206, and when the input amount reaches +20 to 30wt% above the lowest set value of the set weight range or -20 to 30wt% above the highest set value. The opening/closing operation is controlled so that it opens at the right time.

Therefore, when a certain amount of waste plastic is loaded into the blocking plate 242 after being put into the input unit 20, the blocking plate 242 is opened to be discharged through the outlet 204.

By providing such an automatic opening/closing means 24, it can be shortened by 1 to 2 hours compared to conventional manual input.

In the melting process, waste plastic is discharged from the input unit 20 and introduced into the pyrolysis furnace 40,

The waste plastic introduced into the pyrolysis furnace 40 is heated and melted by a burner to produce light oil.

As the pyrolysis proceeds, gasification is performed and a gas stream is generated.

For hard emulsification, the most important residence time is heated at a constant heating rate to 430 to 460 ° C at a minimum heating rate of 4.5 to 5.5 ° C / min. It is heated at a constant rate up to 450°C, preferably at a rate of 5°C/min.

In this way, by maintaining a constant heating rate, it is possible to suppress the generation of gasoline, and it is thermally decomposed at a ratio of 70% of light oil and 30% of heavy oil.

In the distillation step (S30), the gas fraction is distilled using a distillation tower.

In the liquefaction step (S40), the gas fraction separated by the distillation tower (not shown) in the distillation step (S30) is passed through a condenser to liquefy.

The liquefaction process (S40)

A collection step (S401) of collecting the distillate gas separated by the distillation column in the distillation step (S30);

A dispersing step (S402) of dispersing the collected oil gas in a vortex form while passing through a rotating screw 51;

A compression step (S403) of changing the dispersed oil gas in the form of a vortex into a dense gas flow while passing through a pipe diameter reduction part 52 whose diameter is gradually reduced;

A low-temperature process (S404) of reducing the temperature of the compressed dense gas while passing it through the bent tube 53 filled with the adsorbent R and removing odors is included.

The distillate gas that has passed through the low-temperature process (S404) is passed through a condenser (not shown) to liquefy.

In the cooling process (S50), the liquid liquefied in the liquefaction process is cooled by passing through the cooler 30, and then transferred to a storage tank for storage.

In the cooling process (S50), liquid nitrogen is injected into the outer coil 302 wound around the outer circumferential surface of the cooler 30 to cool the cooler 30 to a cooling temperature of -150°C to -120°C.

In addition, liquid nitrogen is injected into the inner coil 304 formed inside the cooler 30 to cool the liquid.

The cooler 30 includes a liquid nitrogen storage container 308 having a liquid nitrogen supply pipe 306 formed therein and connected to an end of the liquid nitrogen supply pipe 306,

It includes a temperature measurement unit 309 that measures the internal temperature of the cooler 30, compares it with a set temperature value, and controls the amount of liquid nitrogen supplied.

Meanwhile, referring to FIGS. 5 to 7C , the cooling process (S50) may include a process of constructing the light blocking structure 1000 mounted on the outside of the cooler 30.

The process of constructing the light blocking structure 1000,

A process of installing the base module 1100 outside the cooler 30;

A process of coupling a plurality of first sidewall modules 1200 to the base module 1100 so that the length can be adjusted in the vertical direction;

A second side wall module is movably coupled to the base module between the plurality of first side wall modules 1200, and a side wall body can be formed in association with the plurality of first side wall modules 1200, and the upper curvature thereof A process of combining a plurality of second side wall modules 1300 so that the size of can be adjusted;

A process of installing a reinforcing module to connect between the plurality of second side wall modules 1300;

A process of installing a roof module to correspond to the curvature of the plurality of second side wall modules 1300

made including

The light blocking structure 1000 includes a base module 1100 installed outside the top of the cooler 30 and a plurality of first sidewall modules 1200 coupled to the base module 1100 so as to be adjustable in length along the vertical direction;

It is movably coupled to the base module 1100 between the plurality of first side wall modules 1200 and is linked to the plurality of first side wall modules 1200 to form the side wall body of the light blocking structure 1000, and the upper curvature thereof second side wall modules 1300, the size of which is adjustable and provided in plurality;

a reinforcing module 1400 for connecting the plurality of second sidewall modules 1300;

A roof module 1500 whose area can be adjusted corresponding to the curvature of the plurality of second side wall modules 1300; may be included.

The base module 1100 is installed outside the upper part of the cooler 30, has a movable slit 1110 recessed in the upper part, and the second side wall module 1300 is movably inserted into the movable slit 1110.

The first side wall module 1200 is coupled to the base module 1100, and the plurality of first side wall modules 1200 are composed of four and may be installed at the upper corner of the base module 1100.

The first side wall module 1200 is composed of a jack supporter or a cylinder capable of extending and contracting in the vertical direction.

The second sidewall module 1300 may be formed to be in contact with the roof module 1500 so as to support the front and rear sides of the roof module 1500 in the longitudinal direction.

The second sidewall module 1300 includes the support portion 1310 and a curvature portion 1320 connected to the support portion 1310 so that at least one of the size of the area and the curvature of the support portion 1310 can be adjusted. can do.

The supporting part 1310 may include a plurality of side wall plates 1311 and a load distribution bar 1312 .

The side wall plate 1311 may contact the roof module 1500 and support the roof module 1500 while in contact with the roof module 1500 .

In addition, at least a portion of the plurality of side wall plates 1311 may be disposed to overlap, and may be slidably movable along a circumferential direction, which is a circumferential direction of a circle having a longitudinal direction as a central axis. The side wall plate 1311 may be formed in a curved plate shape so as to be movable in a circumferential direction.

The curvature part 1320 includes a first curvature changer 1321 that is movable in the vertical direction so that the side wall plate 1311 can come into contact with the roof module 1500 according to the size of the roof module 1500 set by the user. A second curvature changer 1322 movable in the width direction may be included.

In addition, the curvature unit 1320 may further include a third curvature changer 1323 and a fourth curvature changer 1324 capable of finely adjusting the amount of curvature of the plurality of side wall plates 1311 .

The first curvature changer 1321 includes a first main frame 1321a extending vertically and having a space therein, a first adjusting frame 1321b inserted into the first main frame 1321a, and a first adjusting frame. (1321b) may include a first fixing pin (1321c) that can be fixed to the first main frame (1321a).

The second curvature changer 1322 is installed between the pair of first curvature changers 1321, and at least a portion thereof may move in the width direction. That is, at least a part of the second curvature changer 1322 may move in the width direction, and the pair of first curvature changers 1321 may be spaced apart or brought closer to each other in the width direction.

The second curvature changer 1322 includes a coupling frame 1322a, a second main frame 1322b, a second adjusting frame 1322c inserted into the second main frame 1322b, and a second adjusting frame 1322c. 2 may include a second fixing pin 1322d that can be fixed to the main frame 1322b.

The second main frame 1322b may be disposed between the pair of coupling frames 1322a and may have a cylindrical shape extending in the width direction. In addition, a through hole in the width direction may be formed in the second main frame 1322b. A second fixing pin 1322d may be inserted into the hole.

The second adjusting frame 1322c is installed on the first adjusting frame 1321b and is inserted into the inner space of the second main frame 1322b to move in the width direction.

The third curvature changer 1323 may serve to connect the second curvature changer 1322 and the side wall plate 1311 .

The third curvature changer 1323 may precisely adjust the size of the curvature of the plurality of side wall plates 1311 .

The third curvature changer 1323 is a first length changer 1323a extending in one direction, one side rotatably coupled to the coupling frame 1322a and the other side penetrating the lower portion of the first length changer 1323a. A first support shaft 1323b and one side rotatably coupled to the hinge member 1311c and the second support shaft 1323c screwed through the top of the first length changing body 1323a and the other side screwed together can include

The fourth curvature changer 1324 may serve to connect the first curvature changer 1321 and the side wall plate 1311 .

In addition, the fourth curvature changer 1324 may rotate in the circumferential direction around the coupling protrusion and move the sidewall plates 1311 in the circumferential direction to unfold.

The fourth curvature changer 1324 is a second length changer 1324a extending in one direction, one side of which is rotatably coupled to a pair of coupling protrusions and the other side penetrates the lower portion of the second length changer 1324a. A third support shaft 1324b, one side of which is screwed together, is rotatably coupled to the side wall plate 1311, and the other side of a fourth support shaft 1324c screwed through the top of the second length changing body 1324a. can include

The structure and operation method of the fourth curvature changer 1324 may be the same as that of the third curvature changer 1323 .

Some of the plurality of side wall plates 1311 may be folded by the fourth curvature changer 1324 and overlapped with each other.

The guide pin 1311b of one side wall plate 1311 is inserted into the guide groove 1311a of the adjacent other side wall plate 1311, and the guide pin 1311b of the other side wall plate 1311 is inserted into another side wall plate 1311. ) may be in a state of being inserted into the guide groove 1311a.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and may be variously modified and implemented without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

20: input unit 24: opening and closing means
25: driving unit 30: cooler
40: pyrolysis furnace 51: rotary screw
52: pipe diameter reduction part 53: bending pipe
206: weight sensing means 242: blocking plate
251: main gear 253: rack gear
302: outer coil 304: inner coil

Claims (3)

a raw material input step of introducing waste plastic into an input unit and inputting the waste plastic discharged from the input unit into a pyrolysis furnace;
a melting step of heating and melting the waste plastic put into the pyrolysis furnace with a burner and then heating and gasifying the waste plastic until pyrolysis is performed;
a distillation step of distilling the gas fraction generated in the melting step using a distillation tower;
a liquefaction step of liquefying the fractional gas separated by the distillation column in the distillation step by passing it through a condenser;
Including; a cooling step of passing the liquefied liquid in the liquefaction step through a cooler to cool it and then transferring it to a storage tank for storage,
The input unit of the raw material input step,
It is opened at the top to form an inlet, an outlet is formed at the bottom, and includes a weight sensing means for detecting an input amount therein, and an opening and closing means for opening and closing the passage therein,
It is connected to the weight sensing means, and when the input amount reaches +20 to 30wt% of the lowest set value of the set weight range or reaches -20 to 30wt% of the highest set value, the opening and closing means is opened so that the input unit In the method of producing oil using waste plastic, which allows the stored waste plastic to be discharged through an outlet,
The opening and closing means of the input unit of the raw material input process includes a blocking plate that is horizontally coupled to an inner passage of the input unit and moves in a horizontal direction to open and close, and a drive unit provided outside the blocking plate to exert opening and closing power,
The driving part is a motor, and a main gear mounted on the shaft of the motor is geared to a rack gear formed in the longitudinal direction of the blocking plate to control the horizontal movement of the blocking plate.
The cooling process
Liquid nitrogen is injected into the outer coil wound on the outer circumferential surface of the cooler to cool the cooler to -150 ° C to -120 ° C,
Liquid nitrogen is injected into an inner coil formed inside the cooler to cool the liquid,
the cooler,
A liquid nitrogen supply pipe is formed therein and includes a liquid nitrogen storage container connected to an end of the liquid nitrogen supply pipe,
A temperature measurement unit for controlling the supply amount of liquid nitrogen by measuring the internal temperature of the cooler and comparing it with a set temperature value;
The liquefaction process
A collection process for collecting the distillate gas separated by the distillation column in the distillation process;
A dispersing step of dispersing the collected oil gas in a vortex form while passing through a rotating screw;
a compression step of changing the dispersed oil gas in the form of a vortex into a dense form of gas flow while passing through a pipe diameter reduction part whose diameter is gradually reduced;
a low-temperature process of lowering the temperature of the compressed dense gas while passing it through a bent tube filled with an adsorbent and removing odor;
Oil production method using waste plastic, characterized in that the oil gas passing through the low temperature process is passed through a condenser to liquefy.
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