KR101051314B1 - Waste plastic pyrolyzing apparatus and fuel oil producing system using the same - Google Patents

Abstract

PURPOSE: A vacuum pyrolysis apparatus of a waste plastic and a vacuum pyrolysis emulsifier system are provided to improve the process efficiency and process reliability by preventing the fixing phenomenon of the pyrolysis residue and the melt. CONSTITUTION: A part(10) comprises a hopper(12) for an input of the waste plastic. A heating furnace(30) creates the high temperature environment using a burner(34). A melting furnace(50) comprises a transfer-compression axis(60) which transfers and compresses the waste plastic task. The first transport unit(70) connected to the other end of the melting furnace transfers the melt of the waste plastic. A vacuum pyrolysis(90) transfers and thermally decomposes the melt.

Description

Vacuum plastic pyrolyzing apparatus and fuel oil producing system using the same

The present invention relates to a pyrolyzing apparatus and a fuel oil producing system. More specifically, the present invention is a vacuum pyrolysis device that continuously decomposes waste plastics such as vinyl, synthetic resin, rubber, and waste fishing net in a high temperature and vacuum environment, and pyrolysis by condensing oil vapor generated during the pyrolysis process of the vacuum pyrolysis device. A vacuum pyrolysis emulsion system for obtaining oil.

Recently, as the society shows rapid industrialization and urbanization, the generation of various wastes is rapidly increasing, and the proportion of plastic-degradable wastes such as vinyl, synthetic resin, rubber, and waste fishing nets is increasing rapidly.

As a result, countries around the world are actively seeking ways to efficiently treat wastes, while contributing to pollutants such as dioxin (Poly Chlorinated Dibenzo Dioxins, PCDD-based compounds). All efforts are being made to reduce the amount of air pollutant emissions.

Waste generally becomes obsolete and according to the Waste Management Act, it is no longer necessary for human life or industrial activities such as garbage, combustion materials, sludge, waste oil, waste acids, waste alkalis, and carcasses of animals. Discarded substance ".

On the other hand, in the past, 'reduction', 'recycling', 'recycling', 'landfill' and 'incineration' methods have been mainly used for waste disposal, but 'reduction', 'recycling' and 'recycling' are not the final treatment. Except for this, 'landfill' is subject to strict regulation because it causes severe soil and water pollution over a long period of time, and 'incineration' is strongly discouraged because it involves a large amount of soot, dust, and air pollution emissions from incomplete combustion. In particular, waste plastics such as vinyl, synthetic resin, and rubber are the main causes of environmental pollution when landfilling and serious air pollution during incineration.

Accordingly, as a part of recycling of waste plastics, a method of obtaining pyrolysis oil by pyrolysis in a high temperature and vacuum environment and condensing steam generated during the pyrolysis process has been introduced.

For example, Korean Patent Laid-Open Publication No. 2001-66928 discloses pyrolysis oil obtained by condensing oil vapor obtained during dry distillation of waste plastic in a pyrolysis furnace and recovering pyrolysis oil from residual pyrolysis products in a vent condenser of a flue gas treatment process. Disclosed is a method and apparatus for decomposing and emulsifying waste plastics, and Korean Patent Laid-Open Publication No. 2004-22642 prevents self-burning during indirect heating by compressing waste plastic with a cylinder means before inserting it into a pyrolysis furnace to prevent self-burning. Disclosed is a waste synthetic resin pyrolysis oil regeneration device for recycling a pyrolysis product to a heat source.

However, the general technology in the field presents several problems. Looking at two representative ones, firstly, it is not possible to continuously process waste plastics, so that the throughput is largely insufficient per unit time, and second, it is necessary to continuously maintain a vacuum state during pyrolysis of waste plastics. Difficult to lower processing efficiency due to difficulty, and often prevents smooth process progress due to sticking of residue by self-burning in the device.

In brief, each of the general waste plastic pyrolysis apparatuses is a so-called batch type, in which it is impossible to add waste during the process due to pyrolysis, which maintains the vacuum inside. Therefore, only a certain amount of waste can be treated in one process, and as a result, a large amount of pyrolysis furnace is required for large amount of waste disposal as well as time and cost.

In addition, in general, the pyrolysis device of waste plastics is often removed once or twice before compression of waste plastics, so it is difficult to completely remove the air therein, and further air removal is impossible during the pyrolysis process. Because of this, there is a high possibility of the self-burning phenomenon due to the remaining air during the pyrolysis process, and the deterioration of the processing efficiency as well as the residues caused by the self-burning stick to various places in the device, preventing the progress of the process or the malfunction or failure of the pyrolysis device. Frequently it causes.

The present invention has been made to solve the above problems, it is possible to continuously thermal decomposition of the waste plastic and at the same time can remove a substantial amount of air or water contained in the waste plastic, even if a small amount of air, etc. The purpose of the present invention is to provide a vacuum pyrolysis device for waste plastics having high processing efficiency and process reliability, since it is possible to effectively prevent adhesion of residues in the device due to self-burning.

Furthermore, an object of the present invention is to provide a vacuum pyrolysis emulsion system that can obtain a larger amount of pyrolysis oil per unit time by using the vacuum pyrolysis apparatus.

In order to achieve the above object, the present invention, the input portion provided with a hopper for the input of waste plastic; A heating furnace equipped with a burner to create a high temperature environment therein; One end is connected to the inlet part and penetrates the heating furnace so that one end and the other end are exposed to the outside, and a transport compression means for transporting and compressing the waste plastic in one direction along an inner longitudinal direction is installed. A melting furnace for conveying, compressing, melting, and having a steam outlet for discharging water vapor according to compression and melting of the waste plastic on one side; A first transfer part connected to the other end of the melting furnace to transfer the melt of the waste plastic; One end is connected to the first transfer part to penetrate the heating furnace so that the one end and the other end are exposed to the outside, and a vacuum pump for vacuum composition is connected, and transfers the melt from the one end to the other end along an inner longitudinal direction. A vacuum pyrolysis furnace equipped with means for conveying and pyrolyzing the melt; A second transfer part connected to the other end of the vacuum pyrolysis furnace to transfer the pyrolysis residue of the waste plastic; One end is connected to the second transfer unit provides a vacuum pyrolysis apparatus including a discharge unit for discharging the pyrolysis residues.

At this time, the injection portion is a first cylinder tube extending to the rear end of the line of the hopper crosses the injection direction of the waste plastic and a plurality of permeation holes penetrated; A second cylinder tube connecting the first cylinder tube and one end of the melting furnace to cross the first cylinder tube at a rear end of the hopper; A first cylinder device mounted to the first cylinder tube to provide a first cylinder head reciprocating along the longitudinal direction of the first cylinder tube; And a second cylinder device mounted to the second cylinder tube to provide a second cylinder head reciprocating along the longitudinal direction of the second cylinder tube.

In addition, the conveying compression means comprises a first rotating shaft disposed along the inner longitudinal direction of the melting furnace; A first motor that rotates the first rotation shaft outside the melting furnace; And a plurality of blades spirally enclosed along the first axis of rotation and the pitch interval decreases from one end of the melting furnace to the other end.

The first conveying unit or the second conveying unit may include: a first flange connected to the other end of the melting furnace or the other end of the vacuum pyrolysis furnace; A second flange connected to one end of the vacuum pyrolysis furnace or one end of the discharge unit; A horizontal cylindrical extrusion housing connecting the first and second flanges; It is characterized in that it comprises a cylindrical rotator which is embedded along the longitudinal direction of the extrusion housing rotatably along the eccentric shaft and eccentrically rotates in line contact with the inner surface of the extrusion housing.

The conveying means may also include a second rotating shaft disposed along an inner longitudinal direction of the vacuum pyrolysis furnace; A second motor for rotating the second rotating shaft outside the vacuum pyrolysis furnace; And a first screw spirally enclosed along the second axis of rotation, wherein the conveying means further comprises a plurality of paddles encircled along the second axis of rotation, the sections being different from the first screw. It features.

In addition, the discharge portion is a horizontal cylindrical one end is connected to the second transfer portion and the other end is closed by a cap that can be opened and closed, and comprises a discharge means for discharging the pyrolysis residue from the one end to the other end along the inner longitudinal direction And the discharge means includes a third rotation shaft disposed along an inner longitudinal direction of the discharge part; A third motor which rotates the third rotation shaft outside the discharge unit; And a second screw spirally enclosed along the third axis of rotation.

The heating furnace may further include a combustion gas discharge port through which the combustion gas of the burner is discharged.

In addition, the present invention is a vacuum pyrolysis emulsification system using the vacuum pyrolysis apparatus, the first condenser is connected to the oil vapor outlet condensed oil vapor generated during the pyrolysis process to obtain a pyrolysis oil; A vacuum pump connected to the 2-1 condenser; It is connected to the vacuum pump provides a vacuum pyrolysis emulsification system comprising at least one second condenser 2-2 condensing the steam to obtain pyrolysis oil.

At this time, the first condenser connected to the steam outlet for condensing the water vapor into water; A purifier connected to the first condenser to purify the water; It is characterized in that it further comprises an air purifier connected to the combustion gas outlet for purifying the combustion gas.

The vacuum pyrolysis apparatus according to the present invention is capable of continuously supplying and pyrolyzing waste plastic, removing substantially all of the air or moisture contained in the waste plastic, and effectively preventing the sticking phenomenon of the melt or pyrolysis residue in the apparatus. It can show the advantage of high processing efficiency and process reliability.

Therefore, even a relatively large scale can be thermally decomposed a large amount of waste plastic, it is possible to prevent the self-burning phenomenon in advance to proceed a stable process, there is an advantage that can greatly reduce the probability of malfunction or failure.

Furthermore, the vacuum pyrolysis emulsion system according to the present invention obtains pyrolysis oil from the oil vapor generated during the pyrolysis process of the vacuum pyrolysis apparatus, so that a higher amount and higher quality pyrolysis oil can be obtained per unit time.

1 is a schematic diagram of a vacuum pyrolysis apparatus according to the present invention.
2 to 4 is a schematic diagram showing an operating state for the input unit of the vacuum pyrolysis apparatus according to the present invention, respectively.
5 is a schematic view of the transfer unit of the vacuum pyrolysis apparatus according to the present invention.
6 is a schematic view showing a melting furnace of a vacuum pyrolysis apparatus according to the present invention.
Figure 7 is a schematic diagram showing the vacuum pyrolysis furnace of the vacuum pyrolysis apparatus according to the present invention.
8 is a schematic diagram of a vacuum pyrolysis emulsion system using a vacuum pyrolysis apparatus according to the present invention.

Hereinafter, a preferred aspect of the present invention through the drawings look at in detail.

1 is a schematic diagram of a vacuum pyrolysis apparatus according to the present invention.

As can be seen, the vacuum pyrolysis apparatus according to the present invention has a heating part in which the waste plastic is put into the input part 10, the heating furnace 30 in which a high temperature environment is created, and one end connected to the input part 10. 30, a first conveying part 70 connected to the other end of the melting furnace 50, the melting furnace 50 is provided with a conveying compression means 60 for conveying and compressing one direction of the waste plastic along the inner longitudinal direction; 1 vacuum pyrolysis furnace (90), vacuum pyrolysis furnace (1) which penetrates the heating furnace (30) with one end connected to the conveying part (70), and a conveying means (100) for conveying the waste plastic in one direction is installed along the longitudinal direction thereof. 90 may be divided into a second transfer part 110 connected to the other end and a discharge part 130 having one end connected to the second transfer part 110.

In addition, the inlet 10 is provided with first and second cylinder devices 22 and 26 for compressing the hopper 12 and the waste plastic introduced into the hopper 12 and then transferring the waste plastic to the melting furnace 50. 30 is provided with a combustion gas outlet 32 for discharging the combustion gas generated during the composition of the high temperature environment, the melting furnace 50 has a steam outlet for discharging steam and the like generated during the compression and melting process of the waste plastic ( 52), the vacuum pyrolysis furnace (90) is provided with a vacuum pump (92, 180 in Fig. 8) is provided with a steam outlet (92) for continuously discharging oil vapor generated during the pyrolysis process of waste plastic to create and maintain a vacuum , The same below).

Therefore, the waste plastic first introduced into the hopper 12 of the charging unit 10 is compressed by the first and second cylinder devices 22 and 26 and then transferred to the melting furnace 50 after the air or moisture contained therein is removed. In the melting furnace 50, the waste plastic is melted by the high temperature of the heating furnace 30 during the process of being conveyed and compressed in one direction by the conveying compression means 60 so that steam and the like are discharged to the steam outlet 52. The melt is transferred to the vacuum pyrolysis furnace 90 through the first transfer unit 70, and in the vacuum pyrolysis furnace 90, the melt is transported in one direction by the transfer means 100, and inside the vacuum pyrolysis furnace 90. Pyrolyzed by the high temperature of the vacuum and the heating furnace 30 of the oil vapor is discharged to the oil vapor outlet (92) while the pyrolysis residue is delivered to the discharge unit 130 through the second transfer unit 110 is finally discharged to the outside. .

Hereinafter, the detailed configuration and operation of the vacuum pyrolysis apparatus according to the present invention will be described with reference to FIG. 1 and the drawings mentioned separately.

The input unit 10 is a part into which the waste plastic is first put into the hopper 12 and the waste plastic injected into the hopper 12 to remove air or moisture contained therein, and then interlock with each other to be delivered to the melting furnace 50. First and second cylinder devices 22, 26. In this case, preferably, the waste plastic introduced into the hopper 12 may be properly crushed after removing foreign substances such as stones, metals, and wood.

2 to 5 are schematic views showing the operating state of the input portion of the vacuum pyrolysis apparatus according to the present invention, respectively, with reference to FIG. 1.

As can be seen, the inlet 10 extends to the line rear end of the hopper 12 and intersects the hopper 12 and the input direction of the waste plastic to the hopper 12 and has a plurality of permeable holes H penetrated therethrough. A cylinder tube 14, a second cylinder tube 16 that crosses the first cylinder tube 14 at the rear end of the hopper 12 and connects the first cylinder tube 14 and the melting furnace 50 is provided. A first cylinder head 24 of the first cylinder device 22 is mounted in the first cylinder tube 14 so as to reciprocate in the longitudinal direction, and a second cylinder apparatus 26 is mounted in the second cylinder tube 16. The second cylinder head 28 is mounted reciprocally along the longitudinal direction.

For convenience, the motor driving means for reciprocating the first and second cylinder heads 24 and 28 of the first and second cylinder devices 22 and 26 are omitted. Even if there is no drawing or description, it is easily understood.

On the other hand, the first and second cylinder devices 22 and 26 interlock with each other according to a predetermined rule to compress the waste plastic introduced into the hopper 12 to remove air or moisture contained in the waste plastic as much as possible, and then to the melting furnace 50. It is characterized by transmitting.

Looking at the interlocking process of the first and second cylinder devices 22 and 26 for this purpose, first, before the waste plastic is introduced into the hopper 12 as shown in FIG. 14) to move to the first point ① of the tip side of the hopper 12 from the inside, and the second cylinder head 28 to seal the rear end of the first cylinder tube 14 inside the second cylinder tube 16; It moves to the second point ②, which is the connection point of the first and second cylinder tubes 14,16.

Subsequently, when the waste plastic is put into the hopper 12, the second cylinder head 28 stops at the corresponding position as shown in FIG. 3, and the first cylinder head 24 is moved along the inside of the first cylinder tube 14. The waste plastic is compressed by moving to the third point (③), which is the rear end side of 12). As a result, air or moisture contained in the waste plastic is discharged to the outside through the permeation hole H of the first cylinder tube 14.

Subsequently, when the compression pressure of the first cylinder head 24 becomes equal to or greater than a predetermined value, the first cylinder head 24 stops at the corresponding position inside the first cylinder tube 14, and the second cylinder head 28 As shown in FIG. 4, the fourth point ④ corresponding to the upper end of the hopper 12 so as to sufficiently open the connection point between the first cylinder tube 14 and the second cylinder tube 16 in the second cylinder tube 16. , The first cylinder head 24 moves from the inside of the first cylinder tube 14 to the fifth point ⑤, which is the rear end side of the hopper 12, and compresses the compressed waste plastic to the second cylinder tube 16. To pass.

Finally, as shown in FIG. 5, the second cylinder head 28 moves to the first second point ② inside the second cylinder tube 16 to deliver the compressed waste plastic to the melting furnace 50. The first cylinder head 24 also moves inside the first cylinder tube 14 to the first first point ①. The first and second cylinder devices 22 and 26 repeat the above interlocking relationship to continuously supply the waste plastic to the melting furnace 50, while sufficiently removing the air or moisture inside the waste plastic and simultaneously Preventing penetration into the melting furnace 450.

Returning to FIG. 1 again, the heating furnace 30 is a tank shape for accommodating the remaining portions except for one end and the other end of the melting furnace 50 and the vacuum pyrolysis furnace 90 as a part for creating and maintaining a high temperature environment therein. Indicates. And preferably, at least one burner 34 is installed at one lower end of the heating furnace 30 to provide a flame to create a high temperature environment inside the heating furnace 30, and at one upper end of the heating furnace 30. Combustion gas outlet 32 for discharging combustion gas by combustion of the burner 34 is provided.

At this time, the burner 34 may receive fuel from a separate fuel supply device 36, and a valve V0 may be installed between the fuel supply device 36 and the burner 34 to adjust a fuel supply amount. .

Melting furnace 50 is a portion for compressing and melting the waste plastic transferred from the input unit 10 to the first conveying unit 70, for example, a horizontal cylindrical or similar tank shape. And preferably, the melting furnace 50 penetrates the heating furnace 30 so that one end and the other end thereof are exposed to the outside of the heating furnace 30 with one end connected to the inlet part 10, and an inner length of the melting furnace 50 is provided. Along the direction, a conveying compression means 60 for conveying and compressing one direction of the waste plastic is installed, and at the upper end of one side of the melting furnace 50 exposed to the outside of the heating furnace 30 during the compression and melting of the waste plastic. A steam outlet 52 for discharging the generated steam or the like is provided.

Therefore, the waste plastic that has been delivered to the melting furnace 50 through the inlet 10 is melted by the high temperature of the heating furnace 30 while being transported and compressed from one end of the melting furnace 50 to the other end by the transfer compression means 60. It is delivered to the first conveying part 70 in the form of a melt, and water vapor generated during this process is discharged through the steam outlet 52.

6 is a schematic view illustrating an internal structure of the melting furnace 50, and is referred to together with FIG. 1.

As can be seen, along the inner longitudinal direction of the melting furnace 50, a conveying compression means 60 is installed to convey and compress the waste plastic in one direction.

The conveying compression means 60 for this purpose is a first rotating shaft 54 penetrating the interior of the melting furnace 50 in the longitudinal direction, the first motor (M1) for rotating the first rotating shaft (54) outside the melting furnace (50) And a plurality of blades 56 spirally enclosed along the first rotation shaft 54 in the melting furnace 50. And, preferably, the plurality of blades 56 have a pitch gap that decreases from one end of the melting furnace 50 to the other end.

As a result, the waste plastic that has been delivered to the melting furnace 50 is compressed by the pitch interval of the blade 56 during the process of transferring from one end of the melting furnace 50 to the other end, and is melted by the high temperature of the heating furnace 30, and waste The plastic is divided into a water substance and an oil substance, and the water substance is discharged through the steam outlet 52 in the form of water vapor while the oil substance is transferred to the first transfer part 70 in the form of a melt.

4 is a schematic view showing an internal structure of the first transfer unit 70, and will be referred to together with FIG. 1.

As shown, the first transfer unit 70 connects the other end of the melting furnace 50 and one end of the vacuum pyrolysis furnace 90 to transfer the melt of the melting furnace 50 to the vacuum pyrolysis furnace 90.

The first conveying part 70 for this purpose is a first flange 72 connected to the melting furnace 50, a second flange 74 connected to the vacuum pyrolysis furnace 90, first and second flanges 72, 74 Horizontal cylindrical extrusion housing (76) for connecting the extrusion housing 76 is rotatably installed along the eccentric shaft (78) in a position eccentric from the central axis in a built-in state along the longitudinal direction of the extrusion housing (76) And a cylindrical rotating body 80 which is eccentrically rotated while in line contact with the inner surface of the housing 76. At this time, preferably, the first flange 72, the extrusion housing 76, the second flange 74 is disposed in a straight line up and down, the outer surface of the rotating body 80, at least one wing 82 is adjustable in length ) Is attached to the inner surface of the compression housing 76 can be always rotated in close contact.

For reference, a driving source such as a motor for rotating the eccentric shaft 78 has been omitted, and since the general technical concept may be applied thereto, it may be easily understood without a separate drawing or description.

As a result, the first conveying unit 70 transfers the melt of the melting furnace 50 to the vacuum pyrolysis furnace 90 through the eccentric rotation of the rotating body 80, where the rotating body 80 is constantly extruded on its outer surface. Eccentric rotation to make linear contact with the inner surface of the housing 76 can effectively prevent the adhesion of the melt to the rotating body 80 or the extrusion housing 76, thereby transmitting a substantial amount of the melt to the vacuum pyrolysis furnace 90 do.

Referring back to FIG. 1, the vacuum pyrolysis furnace 90 is a portion that thermally decomposes the melt transferred from the first transfer part 70 to the second transfer part 110, preferably in a horizontal cylindrical or similar tank shape. And one end and the other end penetrate through the heating furnace 30 so that one end and the other end are exposed to the outside of the heating furnace 30 in a state where one end is connected to the first transfer unit 70.

And along the inner longitudinal direction of the vacuum pyrolysis furnace (90) is provided with a conveying means (100) for one-way transfer of waste plastic, one side of the vacuum pyrolysis furnace (90) exposed to the outside of the heating furnace (30) At the upper end, an oil vapor outlet 92 for continuously forming and maintaining a vacuum in the vacuum pyrolysis furnace 90 by continuously exhausting steam generated during pyrolysis of the melt is connected to the vacuum pump 180.

At this time, the vacuum pyrolysis furnace (90) is connected to at least two horizontal cylinders in a zigzag or similar form to increase the thermal decomposition efficiency of two or more horizontal sections (A1, A2) and one or more vertical sections (B) connecting them. It is possible to define, and to install the second transfer means 100 along the inner longitudinal direction of each horizontal section (A1, A2).

That is, the vacuum pyrolysis furnace 90 shown in the drawing includes a first horizontal section A1 having one end connected to the first transfer section 70, a first vertical section B connected to the other end of the first horizontal section A1, and a first one. One end is connected to one vertical section B to define a second horizontal section A2 parallel to the lower end of the first horizontal section A1, and the first and second horizontal sections A1 and A2 respectively form waste plastics. The conveying means 100 for one-direction conveying is installed to take the conveying directions opposite to each other so that the melt transferred from the first conveying unit 70 is the first horizontal section A1, the first vertical section B, and the second one. After passing through the horizontal section A2, the second conveying unit 100 is transferred.

As a result, the melt that has been transferred to the vacuum pyrolysis furnace 90 through the first transfer unit 70 is thermally decomposed by the high temperature of the heating furnace 30 while being transported by the transfer means 100, and the inside of the vacuum pyrolysis furnace 90 The exhaust is continuously exhausted through the steam outlet 92 so that a constant vacuum is formed and maintained, so that the melt is pyrolyzed without self-combustion.

8 is a schematic view showing the internal structure of the vacuum pyrolysis furnace 90, which will be referred to together with FIG. 1. Randomly look at the first horizontal section (A1).

As can be seen, along the inner longitudinal direction of the vacuum pyrolysis furnace 90, a conveying means 100 is installed to convey the melt in one direction.

The conveying means 100 for this purpose is a second motor for rotating the second rotary shaft 94 in the longitudinal direction through the interior of the vacuum pyrolysis furnace 90, the second rotary shaft 94 outside the vacuum pyrolysis furnace 90 (M2), the first screw 96 spirally enclosed along the second rotation shaft 94 in the vacuum pyrolysis furnace (90). In this case, preferably, a plurality of paddles 98 for stirring the melt or the pyrolysis residue in addition to the first screw 96 may be attached to the second rotating shaft 94 at different positions. The quantity, arrangement order, etc. of the paddle 98 can be adjusted suitably.

As a result, the melt that has been transferred to the vacuum pyrolysis furnace 90 is thermally decomposed during the transfer in one direction by the transfer means 100 and transferred to the second transfer unit 110, and the oil vapor generated during the process is transferred to the vacuum pyrolysis furnace. It is continuously exhausted through the steam discharge port 92 provided on one side and the vacuum pump 180 connected thereto.

1, the other end of the vacuum pyrolysis furnace 90 is connected to the discharge unit 130 via the second transfer unit 110.

In this case, the second transfer unit 110 has substantially the same configuration and function as the first transfer unit 70, but transfers the pyrolysis residue of the vacuum pyrolysis furnace 90 to the discharge unit 130, not the melt of the melting furnace 50. The discharge unit 130 finally compresses the pyrolysis residues and discharges them to the outside.

And the discharge portion 130 represents a horizontal cylindrical tank or the like shape, one end of which is connected to the second transfer portion 110 and the other end is closed by a cap 132 that can be opened and closed, and preferably, pyrolysis residues along an inner longitudinal direction. Discharge means 140 for transferring the one direction is installed.

At this time, the discharge means 140 is a third rotary shaft 134 penetrating the inside of the discharge portion 130 in the longitudinal direction substantially the same as the transfer means 100, the third rotary shaft from the outside of the discharge portion 130 A third motor M3 for rotating 134 and a second screw 136 helically enclosed along a third axis of rotation in the discharge unit 130. In addition, the other end of the discharge unit 140 is sealed with a cap 132, the cap 132 may be equipped with a weight or the like so as to open the other end of the discharge unit 130 for a discharge pressure of a predetermined or more, The final pyrolysis residue is discharged to the outside by a certain weight through the discharge unit 130.

On the other hand, the vacuum pyrolysis apparatus according to the present invention as described above is capable of continuous supply and thermal decomposition of the waste plastic and to fix the melt or pyrolysis residues in the device while removing substantially all of the air or water contained in the waste plastic. In order to effectively prevent the present invention, the present invention further provides a vacuum pyrolysis emulsion system capable of obtaining a larger amount of pyrolysis oil per unit time using the vacuum pyrolysis apparatus.

9 is a structural diagram showing a vacuum pyrolysis emulsion system according to the present invention. For reference, in this drawing, the vacuum pyrolysis apparatus is briefly shown mainly on necessary parts, and reference numerals unnecessary for description are omitted.

As can be seen, the vacuum pyrolysis emulsification system according to the present invention is the combustion of the first condenser 152, the water purifier 154, the heating furnace 30, which are in turn connected to the steam outlet 52 of the melting furnace 50. An air purifier 162 connected to the gas outlet 32, at least one second condenser 164, 166, 168 and a vacuum pump 180 connected to the oil vapor outlet 92 of the vacuum pyrolysis furnace 90 are included. For reference, detailed configurations of condensers, purifiers, vacuum pumps, etc. may be applied to general contents, and thus, the detailed description of the condenser, the purifier, and the vacuum pump will be given.

A first condenser 152 is connected to the steam outlet 52 of the melting furnace 50 to condense the water vapor generated during the compression and melting of the waste plastic into liquid water, and the crystallizer 154 to the first condenser 152. ) Is connected to purify the condensed water.

An air purifier 162 is connected to the combustion gas outlet 32 of the heating furnace 30 to purify the combustion gas generated during the combustion process of the fuel by the burner 34 and discharge it to the outside. For reference, the combustion gas discharged from the heating furnace 30 is mostly carbon dioxide and water vapor by substantially complete combustion, and the air purifier 162 removes a small amount of carbon monoxide.

At least one second condenser 164, 166, 168 and a vacuum pump P are connected to the oil vapor outlet 92 of the vacuum pyrolysis furnace 90. In this case, preferably, the second condenser 164, 166, 168 is a 2-1 condenser 164 connected to the oil vapor outlet 92, and at least one 2-2 condenser 166, 168 connected to the 2-1 condenser 164. And the vacuum pump 180 intakes the vapor generated in the pyrolysis process of the melt in the vacuum pyrolysis furnace 90 through the 2-1 condenser 164 to properly adjust the degree of vacuum in the vacuum pyrolysis furnace 90. By holding it, the vaporized air vapor is exhausted to the second-two condensers 166 and 168 while promoting the vaporization of the melt. Preferably, the 2-1 condenser 164 and the 2-2 condenser 166 and 168 are connected to the first and second pyrolysis oil tanks 165 and 167, respectively.

As a result, the oil vapor generated during the pyrolysis process of the vacuum pyrolysis furnace 90 is sucked into the oil vapor outlet 92 by the vacuum pump 180 and remains with the primary pyrolysis oil during the process of passing through the 2-1 condenser 164. The oil is separated into an oil vapor, and the primary pyrolysis oil is stored in the first pyrolysis oil tank 165. The residual oil vapor is condensed into secondary pyrolysis oil and stored in the second pyrolysis oil tank 167 during the process of passing through the at least one 2-2 condenser 166 and 168 through the vacuum pump 180.

At this time, preferably the safety valve (V1) for opening the corresponding pipe to the pressure exceeding the reference value may be installed in the pipe (L) connecting the 2-1 condenser 164 and the 2-2 condenser (166,168). The vacuum pump 180 has an intake pipe SL connected to a conduit L between the safety valve V1 and the 2-1 condenser 164, and the safety valve V1 and the 2-2 condenser 166 and 168. Exhaust pipe BL is connected to the pipe line L between). In this case, when an abnormal pressure or the like is detected in the vacuum pyrolysis furnace 90, the safety valve V1 opens the corresponding pipe L and vacuum pyrolysis furnace ( 90) Since the inside of the steam is aspirated through both the 2-1 and 2-2 condensers (164, 166, 168) it is possible to quickly lower the internal pressure of the vacuum pyrolysis furnace (90).

Furthermore, if necessary, a cooler 172 for cooling the purified water in the clarifier 154, a coolant tank 174 for storing the water cooled in the cooler 172, and the coolant stored in the coolant tank 174 may be used. By further using a pump 178 circulating in the condenser 166, 168 or the like, the condensation efficiency of the second condenser 166, 168 can be further improved. In addition, between the 2-1 condenser 164 and the first pyrolysis oil tank 165, the intake pipe SL or the exhaust pipe BL of the vacuum pump 180, the 2-1 condenser 164 and the 2-2 If appropriately installed check valves (V2 to V6) that allow only one-way flow of the fluid, respectively, such as a conduit connecting the condenser (166, 168) can further increase the overall reliability.

For reference, reference numeral 182 denotes a drain pipe for directly discharging water cooled by the cooler 172 to the outside, and V7 denotes a separate check valve installed in the drain pipe.

The above description and drawings are only illustrative of the invention and do not limit the invention. That is, the present invention may be modified in various ways, but if these modifications fall within the technical scope of the present invention, it should be included in the scope of the present invention. There is a need.

10: input part 12: hopper
14,16: first and second cylinder tube 22,26: first and second cylinder device
24,28: first and second cylinder head 30: heating furnace
32: steam outlet 34: burner
36: fuel supply device 50: melting furnace
52 steam outlet 54 first rotating shaft
56 blade 60: feed compression means
70,110: first and second conveying portion 72,74: first and second flange
76: extrusion housing 78: eccentric shaft
80: rotating body 90: vacuum pyrolysis furnace
92: vapor discharge outlet 94: the second rotary shaft
96: first screw 98: paddle
100: transfer means 130: discharge part
132 cap 134 third axis of rotation
136: second screw 152: first condenser
154: crystal purifier 162: air purifier
164,166,168: second condenser 165,167: first and second pyrolysis oil tanks
172: cooler 174: coolant tank
178: pump 180: vacuum pump
182: drain pipe A1, A2: first and second horizontal section
B: Vertical section H: Puncture
L: Pipeline SL, BL: Intake and Exhaust Pipe
M1, M2, M3: first to third motors V0 to V7: valves

Claims (11)

An input unit 10 having a hopper 12 for inputting waste plastic;
Burner 34 is mounted to the heating furnace 30 to create a high-temperature environment therein;
Feed compression means for connecting one end to the inlet 10 to penetrate the heating furnace 30 to expose the one end and the other end to the outside, and to convey and compress the waste plastic in one direction along the inner longitudinal direction ( A melting furnace (50) equipped with a steam outlet (52) for transporting, compressing, and melting the waste plastic, and discharge of water vapor due to compression and melting of the waste plastic on one side thereof;
A first transfer part 70 connected to the other end of the melting furnace 50 to transfer the melt of the waste plastic;
One end is connected to the first transfer part 70 to penetrate the heating furnace 30 so that the one end and the other end are exposed to the outside, and a vacuum pump 180 for forming a vacuum is connected to the melt along the inner longitudinal direction. A vacuum pyrolysis furnace (90) equipped with a conveying means (100) for conveying from one end to the other end to convey and pyrolyze the melt;
A second transfer part 110 connected to the other end of the vacuum pyrolysis furnace 90 to transfer the pyrolysis residue of the waste plastic; And
One end is connected to the second transfer unit 110 includes a discharge unit 130 for discharging the pyrolysis residues,
The conveying compression means 60,
A first rotating shaft 54 disposed along an inner longitudinal direction of the melting furnace 50;
A first motor (M1) for rotating the first rotating shaft (54) outside the melting furnace (50); And
And a plurality of blades (56) spirally enclosed along the first rotating shaft (54) and the pitch interval decreases from one end of the melting furnace (50) to the other end.
An input unit 10 having a hopper 12 for inputting waste plastic;
Burner 34 is mounted to the heating furnace 30 to create a high-temperature environment therein;
Feed compression means for connecting one end to the inlet 10 to penetrate the heating furnace 30 to expose the one end and the other end to the outside, and to convey and compress the waste plastic in one direction along the inner longitudinal direction ( A melting furnace (50) equipped with a steam outlet (52) for transporting, compressing, and melting the waste plastic, and discharge of water vapor due to compression and melting of the waste plastic on one side thereof;
A first transfer part 70 connected to the other end of the melting furnace 50 to transfer the melt of the waste plastic;
One end is connected to the first transfer part 70 to penetrate the heating furnace 30 so that the one end and the other end are exposed to the outside, and a vacuum pump 180 for forming a vacuum is connected to the melt along the inner longitudinal direction. A vacuum pyrolysis furnace (90) equipped with a conveying means (100) for conveying from one end to the other end to convey and pyrolyze the melt;
A second transfer part 110 connected to the other end of the vacuum pyrolysis furnace 90 to transfer the pyrolysis residue of the waste plastic; And
One end is connected to the second transfer unit 110 includes a discharge unit 130 for discharging the pyrolysis residues,
The first transfer unit 70 or the second transfer unit 110,
A first flange 72 connected to the other end of the melting furnace 50 or the other end of the vacuum pyrolysis furnace 90;
A second flange 74 connected to one end of the vacuum pyrolysis furnace 90 or one end of the discharge unit 130;
A horizontal cylindrical extrusion housing (76) connecting the first and second flanges (72, 74); And
Vacuum pyrolysis, which includes a cylindrical rotating body 80 that is eccentrically rotated in linear contact with an inner surface of the extrusion housing 76 and is embedded along the longitudinal direction of the extrusion housing 76 to be rotatable along the eccentric shaft 78. Device.
The method according to claim 1 or 2,
The injection unit 10,
A first cylinder tube (14) extending to a line rear end of the hopper (12) and crossing a plurality of perforation holes (H) through the direction in which the waste plastic is inserted;
A second cylinder tube (16) connecting the first cylinder tube (14) and one end of the melting furnace to cross the first cylinder tube (14) at the rear end of the hopper (12);
A first cylinder device (22) mounted to said first cylinder tube (14) to provide a first cylinder head (24) reciprocating along the longitudinal direction of said first cylinder tube (14); And
A vacuum pyrolysis device including a second cylinder device (26) mounted on the second cylinder pipe (16) to provide a second cylinder head (28) reciprocating along the longitudinal direction of the second cylinder pipe (16). .
delete The method according to claim 1 or 2,
The transfer means 100,
A second rotating shaft (94) disposed along an inner longitudinal direction of the vacuum pyrolysis furnace (90);
A second motor (M2) for rotating the second rotating shaft (94) outside the vacuum pyrolysis furnace (90); And
And a first screw (96) spirally enclosed along the second axis of rotation (94).
The method according to claim 5,
The transfer means 100,
And a plurality of paddles (98) which are spaced apart from the first screw (96) and enclosed along the second axis of rotation (94).
The method according to claim 1 or 2,
The discharge unit 130,
The one end is connected to the second conveying unit 110 and the other end is a horizontal cylindrical closed with a cap 132, which is openable, further discharge means 140 for discharging the pyrolysis residue from the one end to the other end along the inner longitudinal direction. Vacuum pyrolysis device comprising.
The method according to claim 7,
The discharge means 140,
A third rotating shaft 134 disposed along an inner longitudinal direction of the discharge part 130;
A third motor (M3) for rotating the third rotation shaft (134) outside the discharge unit (130); And
And a second screw (136) spirally enclosed along the third rotating shaft (134).
The method according to claim 1 or 2,
The heating furnace (30) further comprises a combustion gas outlet (32) in which the combustion gas of the burner (34) is discharged.
A vacuum pyrolysis emulsion system using the vacuum pyrolysis apparatus according to claim 9,
A 2-1 condenser 164 connected to the vapor discharge port 92 so as to first condense oil vapor generated during the pyrolysis process to obtain pyrolysis oil;
The vacuum pump 180 connected to the 2-1 condenser 164; And
And at least one second condenser (166, 168) connected to the vacuum pump (180) to condense the steam secondary to obtain pyrolysis oil.
The method according to claim 10,
A first condenser 152 connected to the steam outlet 52 to condense the water vapor into water;
A purifier 154 connected to the first condenser 152 to purify the water; And
And an air purifier (162) connected to the combustion gas outlet (32) to purify the combustion gas.

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