Light oil separate system

Abstract

The present invention relates to a light oil separation system, and aims to enhance product competitiveness by enabling the continuous production of pyrolysis oil products having a required flash point by separating light oil from pyrolysis oil produced by pyrolysis. To this end, the present invention is characterized by comprising: a preheater that receives pyrolysis oil from a pyrolysis oil reduction device and preheats it; a heater that heats the pyrolysis oil preheated through the preheater to induce light oil to volatilize and detach from the pyrolysis oil; a boiler that supports preheating or heating of the pyrolysis oil by circulating heating water to each of the preheater and the heater; a condenser that receives the light oil detached from the pyrolysis oil through the heater and condenses it; a light oil storage unit configured to store the light oil condensed through the condenser; a cooler that supports cooling the pyrolysis oil from which light oil has detached in the heater; at least one filter that filters the pyrolysis oil cooled through the cooler to obtain high-purity pyrolysis oil; a pyrolysis oil storage tank that stores the pyrolysis oil filtered through the filter; and a cooling water supply unit that supports cooling the pyrolysis oil or light oil by circulating cooling water to each of the condenser and the cooler.

Description

Technology Field

[0001] The present invention relates to a light oil separation system, and more specifically, to a light oil separation system that strengthens product competitiveness by separating light oil from pyrolysis oil produced by pyrolysis, thereby enabling the continuous production of pyrolysis oil products having a required flash point. Background Technology

[0003] Generally, plastic is a material that can be molded by heating, pressurization, or both, or a resin product made using such a material. Typically, plastic refers to synthetic resin; while the final product is a solid with a high molecular weight, it possesses fluidity during molding, making it easy to mold and allowing for the production of various shapes. Furthermore, by polymerizing various substances using petroleum as the primary raw material to produce polymer forms, it is possible to polymerize materials with properties desired by users, thereby producing polymer compounds with diverse functions and characteristics. Consequently, their applications and usage are rapidly increasing. Additionally, as plastic is a type of petroleum compound produced in a polymer form, it is difficult to decompose, offers excellent corrosion resistance for long-term use, is easy to mold allowing for the production of various shapes, and is lightweight. Consequently, it is widely used in everything from household goods to various industrial products, leading to a surge in usage.

[0004] However, there is a problem in disposing of waste plastics, as waste plastics discarded after use have the characteristic of plastics to be difficult to decompose, making landfill disposal difficult, and incineration releases various harmful gases that pollute the atmospheric environment.

[0005] Furthermore, as reserves of oil, including petroleum used as fuel to produce waste plastics, shrink, oil prices are rising, and due to resource depletion, the need to reuse the oil contained within waste plastics is increasing.

[0006] Accordingly, a waste plastic pyrolysis oil reduction device has recently been developed to increase resource recycling rates by reducing and recovering the pyrolysis oil contained within the waste plastic.

[0007] A pyrolysis oil reduction device (1) for obtaining pyrolysis oil from conventional waste plastics is configured as shown in FIG. 1, comprising a decomposition furnace (2) that receives waste plastics and heats them to a certain temperature, such as 300 to 800°C, to pyrolyze them and form a liquid resin, a conveying means (3) configured on one side of the decomposition furnace (2) to convey the liquid resin, and a purification unit (4) that receives the liquid resin conveyed through the conveying means (3) and purifies it to obtain pyrolysis oil.

[0008] In addition, the above decomposition furnace (2) allows the melting of waste plastic contained inside to proceed smoothly through rotation in place.

[0009] In addition, a pipe structure (5) is configured between the above-mentioned decomposition furnace (2) and the transfer means (3) to support the transfer of liquid resin through the transfer means (3) without interference with the rotating decomposition furnace (2).

[0010] However, conventional pyrolysis oil reduction devices do not provide a separate system for obtaining light oil with a required flash point from the pyrolysis oil after obtaining pyrolysis oil from waste plastics. Consequently, continuous pyrolysis oil cannot be produced from waste plastics, leading to problems such as reduced production efficiency and a decrease in the production volume of pyrolysis oil. Prior art literature

[0012] Republic of Korea Patent No. 10-861573 (Published Oct. 07, 2008) Republic of Korea Patent No. 10-955297 (Published Apr. 30, 2010) The problem to be solved

[0013] The purpose of the present invention, which is proposed to solve the above-mentioned problems, is to provide a light oil separation system that strengthens product competitiveness by separating light oil from pyrolysis oil produced by pyrolysis and enabling the continuous production of pyrolysis oil products having a required flash point. means of solving the problem

[0015] The present invention, for achieving the above-mentioned purpose, comprises: a preheater that receives pyrolysis oil from a pyrolysis oil reduction device and preheats it; a heater that heats the pyrolysis oil preheated through the preheater to induce light oil to volatilize and detach from the pyrolysis oil; a boiler that supports preheating or heating of the pyrolysis oil by circulating heating water to each of the preheater and the heater; a condenser that receives the light oil detached from the pyrolysis oil through the heater and condenses it; a light oil storage unit configured to store the light oil condensed through the condenser; a cooler that receives the pyrolysis oil from which light oil has detached in the heater and supports it for cooling; at least one filter that filters the pyrolysis oil cooled through the cooler to obtain high-purity pyrolysis oil; and a pyrolysis oil storage tank that stores the pyrolysis oil filtered through the filter. and a cooling water supply unit that supports cooling the pyrolysis oil or light oil by circulating cooling water to each of the condenser and cooler.

[0016] In the present invention, the preheater preferably comprises: a chamber having a circulation space formed therein and a first inlet pipe supporting the entry of pyrolysis oil into the circulation space on one side, and a first discharge pipe formed at a position corresponding to the first inlet pipe to discharge the pyrolysis oil that has been preheated in the circulation space; a circulation pipe formed in the circulation space of the chamber, including a second inlet pipe receiving heating water provided through a boiler on one side and a second discharge pipe supporting the re-entry of heating water into the boiler on the other side; a plurality of partitions formed in the circulation space of the chamber, configured in close proximity to the first inlet pipe and the first discharge pipe to support heat exchange between the pyrolysis oil and the circulation pipe between the first inlet pipe and the first discharge pipe; and at least one retention partition formed between the plurality of partitions, which delays the movement of the pyrolysis oil from the first inlet pipe to the first discharge pipe to extend the contact time with the circulation pipe and thereby induce an improvement in heat exchange efficiency.

[0017] In the present invention, the heater comprises: a heating chamber having a heating space of a certain size formed inside and a third inlet pipe receiving pyrolysis oil on one side, a third outlet pipe configured to correspond to the third inlet pipe to support the pyrolysis oil from which light oil has been removed so that it may enter a cooler, and a fourth inlet / outlet pipe supporting the light oil volatilizing from the heating of the heating space to enter the other side; a heating pipe configured within the heating chamber and having a fifth inlet pipe supporting the entry of heating water on one side and a fourth outlet pipe configured at a position corresponding to the fifth inlet pipe to support the re-entry of heating water into a boiler after it has circulated through the heating space; a stirring unit configured in the heating space of the heating chamber to support the improvement of the separation efficiency of light oil from the pyrolysis oil by expanding the contact area of ​​the pyrolysis oil with the heating pipe to induce the pyrolysis oil to be heated evenly; and a retention pipe to retain the light oil discharged through the fourth outlet pipe to filter out foreign substances. It is preferable to include a filter section configured at one end of the retention tube to filter light oil and induce the discharge of high-purity light oil with a low flash point. Effects of the invention

[0019] According to the present invention, by separating light oil from pyrolysis oil produced by pyrolysis and enabling the continuous production of pyrolysis oil products having a required flash point, the effect of strengthening product competitiveness is achieved. Brief explanation of the drawing

[0021] FIG. 1 is a schematic diagram of a pyrolysis oil reduction device showing a conventional example. FIG. 2 is a configuration diagram of a light oil separation system according to the present invention. FIG. 3 is a configuration diagram of a preheater according to the present invention. FIG. 4 is a configuration diagram of a heater according to the present invention. FIG. 5 is a diagram showing the configuration of a retention tube and a filtration section according to the present invention. Specific details for implementing the invention

[0022] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined by the description in the claims.

[0023] Meanwhile, the terms used in this specification are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used in this specification, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, operations, and / or elements to the mentioned components, steps, operations, and / or elements. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0025] The light oil separation system of the present invention receives pyrolysis oil generated through a pyrolysis oil reduction device (1), separates light oil from the pyrolysis oil, and enables the continuous production of a pyrolysis oil product having a required flash point.

[0026] The above light oil separation system may be configured to include a preheater (10), a heater (20), a boiler (30), a condenser (40), a light oil storage unit (50), a cooler (60), a filter (70), a pyrolysis oil storage tank (80), and a cooling water supply unit (90), as shown in FIG. 2.

[0027] The above preheater (10) receives pyrolysis oil provided through the pyrolysis oil reduction device (1) and heats it to a certain temperature to activate the pyrolysis oil.

[0028] The above preheater (10) may include a chamber (110), a circulation pipe (120), a partition (130), and a retention partition (140), as shown in FIG. 3.

[0029] The above chamber (110) forms a circulation space (112) inside so that the pyrolysis oil is preheated by maintaining the pyrolysis oil at a certain temperature through mutual exchange of heated water and pyrolysis oil.

[0030] Additionally, the chamber (110) includes a first entry pipe (114) configured on one side to support the pyrolysis oil provided from the pyrolysis oil reduction device (1) so that it can enter the chamber (110).

[0031] Additionally, the chamber (110) includes a first discharge pipe (116) configured on the other side to support the pyrolysis oil circulated in the circulation space (112) so that it can be discharged to the outside.

[0032] The above circulation pipe (120) is configured in the circulation space (112) of the chamber (110) to support the circulation of heated water supplied through the boiler (30) through the circulation space (112).

[0033] Additionally, the circulation pipe (120) includes a second inlet pipe (122) configured on one side of the chamber (110) so that heated water can be supplied to one end of the circulation pipe (120).

[0034] Additionally, the circulation pipe (120) includes a second discharge pipe (124) configured on the other side of the chamber (110) so that heated water can be discharged to the other end of the circulation pipe (120).

[0035] Additionally, the above partition (130) is configured in the circulation space (112) of the chamber (110), and is configured at a position adjacent to the first inlet pipe (114) and the first outlet pipe (116), respectively, so that the heating water is not circulated throughout the entire circulation space (112) of the chamber (110), and the pyrolysis oil that enters the first inlet pipe (114) can be discharged through the first outlet pipe (116), thereby limiting the space. In this partition (130), if the pyrolysis oil is circulated throughout the entire circulation space (112) as in the conventional method, the preheating efficiency decreases due to extensive heat exchange between the heating water and the pyrolysis oil; however, if heat exchange between the heating water and the pyrolysis oil occurs within the space limited by the partition (130), the preheating efficiency is improved due to heat exchange within the limited space.

[0036] The above retention partition (140) is configured within the above partition (130) and supports further improvement of the preheating efficiency of the pyrolysis oil by delaying contact with the circulation pipe (120) during the process in which the pyrolysis oil entering through the first entry pipe (114) is discharged through the first discharge pipe (116).

[0037] In this case, the above-mentioned retention partition (140) is formed in multiple numbers at regular intervals in the circulation space (112) of the chamber (110).

[0038] Additionally, the above retention partition (140) may include an alternately formed outlet hole (142) to induce retention while allowing heated water to sequentially enter the retention partitions (140) formed in a plurality.

[0039] The above-mentioned outlet hole (142) is formed on one side of the retention partition (140) and is formed in a certain size so that the pyrolysis oil can enter the next stage. For example, a plurality of retention partitions (140) are formed at regular intervals between the partitions (130), and the outlet hole (142) is formed at the bottom of the retention partition (140) formed at one end and the outlet hole (142) is formed at the top of the retention partition (140) located in the next order, so that the contact time of the pyrolysis oil with the circulation pipe (120) is delayed as much as possible, thereby improving the preheating efficiency due to heat exchange.

[0040] The heater (20) receives the pyrolysis oil preheated in the preheater (10) and heats it to a certain temperature.

[0041] As shown in FIG. 4, the heater (20) may include a heating chamber (210), a heating pipe (220), a stirring section (230), a retention pipe (240), and a filtration section (250).

[0042] The heating chamber (210) forms a heating space (212) inside so that light oil volatilizes and separates from the pyrolysis oil through mutual exchange of heating water and pyrolysis oil.

[0043] Additionally, the heating chamber (210) includes a third entry pipe (214) configured on one side to support the pyrolysis oil so that it can enter the heating space (212), and a third discharge pipe (216) through which the pyrolysis oil is discharged.

[0044] The third discharge pipe (216) is configured on the other side of the heating chamber (210) so that the pyrolysis oil from which light oil has been separated can be supplied to the cooler (60).

[0045] Additionally, the heating chamber (210) includes a fourth entry pipe (218) configured on the other side to allow light oil separated from the pyrolysis oil to enter the other side. In this case, the heating chamber (210) is configured so that the light oil entering through the fourth entry pipe (218) can sequentially enter the retention pipe (240) and the filtration section (250).

[0046] The above heating pipe (220) is configured in the heating space (212) of the heating chamber (210) to facilitate the circulation of heating water provided from the boiler (30), thereby heating the pyrolysis oil.

[0047] Additionally, the heating pipe (220) is configured on one side of the heating chamber (210), and a fifth inlet pipe (222) is configured to allow the heating water provided from the boiler (30) to enter the heating pipe (220).

[0048] Additionally, the heating pipe (220) is configured on the other side of the heating chamber (210), and a fourth discharge pipe (224) is configured to allow the heated water circulated through the heating pipe (220) to be re-entered into the boiler (30).

[0049] The above stirring unit (230) is configured in the heating space (212) of the heating chamber (210) to stir the pyrolysis oil introduced through the third entry pipe (214) so ​​that contact with the heating pipe (220) is evenly made, thereby supporting the promotion of volatilization of light oil from the pyrolysis oil.

[0050] For example, the stirring unit (230) comprises a motor, a stirring shaft formed at one end of the motor, and a stirring blade formed on the stirring shaft. As the stirring blade rotates according to the rotational force of the motor, it stirs the pyrolysis oil contained in the heating space (212), thereby ensuring that the pyrolysis oil comes into contact with the heating pipe (220) evenly. Accordingly, by promoting the heating of the pyrolysis oil and promoting even heating by the heating pipe (220), the amount of light oil volatilized from the pyrolysis oil is increased, thereby improving the efficiency of obtaining light oil.

[0051] The above retention tube (240) is configured on one side of the heating chamber (210) to receive light oil entering through the fourth entry tube (218) and to support it so that it is retained, thereby allowing foreign substances such as condensate contained in the volatile light oil to be separated by free fall.

[0052] The above retention tube (240) includes an entry tube member (242) and a condensation cap (244), as shown in FIG. 5.

[0053] The above-mentioned entry pipe member (242) is configured on the inner side of the retention pipe (240) and is configured at a certain height so as to be connected to the fourth entry pipe (218), so that light oil passing through the fourth entry pipe (218) enters, and the light oil is aggregated during the process of passing through the certain height.

[0054] The above condensation cap (244) is configured at one end, for example, the top of the inlet pipe member (242), to induce the diffusion of the agglomerated light oil over a wide range, thereby causing foreign substances such as condensate contained in the light oil to be separated by natural detachment.

[0055] The above filter unit (250) is configured at one end of the retention pipe (240) to filter out foreign substances contained in light oil.

[0056] As shown in FIG. 5, the above filtration unit (250) includes a filter tube (252), a filter mesh (254), and a fifth discharge tube (256).

[0057] The above filter tube (252) is configured inside the filter section (250) to support light oil entering the filter section (250) so that it can enter from the outside to the inside.

[0058] In addition, the filter tube (252) is composed of a perforated plate or a mesh screen so that primary filtration is performed during the process of transferring light oil from the outside to the inside. In this case, the filter tube (252) is formed of a metal material such as stainless steel, so that heat exchange occurs between the metal material and the light oil, thereby inducing the light oil to condense and making it easier for foreign substances to fall off.

[0059] The filter mesh (254) is configured inside the filter tube (252) to secondarily filter the light oil that has entered the inside of the filter tube (252), thereby obtaining light oil of high purity. In this case, the filter mesh (254) may be a non-woven fabric. Of course, it is not limited thereto, and the filter mesh (254) may be a membrane filter or a HEPA filter.

[0060] The above-mentioned fifth discharge pipe (256) is configured on one side of the filtration section (250) to discharge filtered light oil that has passed through the filter mesh (254) to the outside and allow it to enter the condenser (40).

[0061] The above boiler (30) is configured to provide heated water to a preheater (10) and a heater (20).

[0062] The above condenser (40) receives light oil separated from pyrolysis oil through the heater (20) and condenses it to obtain light oil with a low flash point. Additionally, the above condenser (40) may be configured with a structure identical or similar to that of the preheater (10) described above. In this case, if the condenser (40) adopts the same structure as the preheater (10), cooling water is introduced into the circulation pipe to facilitate the condensation of the light oil.

[0063] Additionally, the condenser (40) includes an inlet pipe that receives filtered light oil from the heater (20) and introduces it into the interior, and a discharge pipe configured at a position corresponding to the inlet pipe to support high-purity light oil with a low flash point through the condensation of the filtered light oil so as to be supplied to the light oil storage unit (50).

[0064] Additionally, the condenser (40) includes an inlet pipe for allowing cooling water supplied from a cooling water supply unit (90) to enter, and an outlet pipe configured at a position corresponding to the inlet pipe to support the cooling water circulating inside the condenser (40) to condense filtered light oil and then re-entering it into the cooling water supply unit (90).

[0065] The above light oil storage unit (50) receives light oil condensed through the condenser (40) and stores it.

[0066] In this case, the hard oil storage unit (50) may be composed of a first storage tank (510) and a second storage tank (520).

[0067] The first storage tank (510) above induces the stabilization of the light oil by primarily storing the light oil provided through the condenser (40).

[0068] The second storage tank (520) stores light oil stabilized through the first storage tank (510) and allows it to be discharged to the outside when necessary. In this case, the second storage tank (520) is configured with a higher capacity than the first storage tank (510).

[0069] The cooler (60) receives the pyrolysis oil from which light oil has been removed through the heater (20) and cools it. Additionally, the cooler (60) may be configured with a structure identical or similar to that of the preheater (10) described above. In this case, if the cooler (60) adopts the same structure as the preheater (10), cooling water is introduced into the circulation pipe to cool the pyrolysis oil.

[0070] Additionally, the cooler (60) includes an inlet pipe that receives pyrolysis oil from the heater (20) and introduces it into the interior, and an outlet pipe configured at a position corresponding to the inlet pipe to support the cooled pyrolysis oil so as to be supplied to the filter (70).

[0071] Additionally, the cooler (60) includes an inlet pipe for allowing cooling water supplied from a cooling water supply unit (90) to enter, and an outlet pipe configured at a position corresponding to the inlet pipe to support the cooling water circulating inside the cooler (60) to cool the pyrolysis oil and then re-entering it into the cooling water supply unit (90).

[0072] The filter (70) receives the pyrolysis oil cooled in the cooler (60) and filters out foreign substances to obtain high-purity pyrolysis oil. In this case, the filter (70) is configured in multiple units to improve the filtration efficiency of the pyrolysis oil, and the filter (70) may adopt a backwash filtration system.

[0073] The above pyrolysis oil storage tank (80) receives high-purity pyrolysis oil discharged through the above filter (70) and stores it.

[0074] The above cooling water supply unit (90) is configured to provide cooling water to the condenser (40) and the cooler (60), respectively.

[0076] The above description is merely one example for implementing a light oil separation system, and the present invention is not limited to the above-described example. Those skilled in the art will understand that various modifications can be made without departing from the essence of the present invention. Explanation of the symbols

[0078] 10: Preheater 110: Chamber 112: Circulation Space 114: First Entrance Passage 116: 1st discharge pipe 120: Circulation pipeline 122: Second Inlet Pipe 124: Second Outlet Pipe 130: Bulkhead 140: Retention bulkhead 142: Water outlet 20: Heater 210: Heating chamber 212: Heating space 214: Third Inlet Pipe 216: Third Outlet Pipe 220: Heating pipe 222: 5th entry pipe 224: 4th discharge pipe 230: Mixing section 240: Stay Officer 242: Absence of Entry Officer 244: Condensation cap 250: Filter section 252: Filter tube 254: Filter mesh 256: 5th discharge pipe 30: Boiler 40: Condenser 50: Light oil storage 510: 1st storage tank 520: 2nd storage tank 60: Cooler 70: Filter 80: Pyrolysis oil storage tank 90: Cooling water supply unit

Claims

Claim 1 A preheater that receives pyrolysis oil from a pyrolysis oil reduction device and preheats it; a heater that heats the pyrolysis oil preheated through the preheater to induce light oil to volatilize and detach from the pyrolysis oil; a boiler that supports preheating or heating of the pyrolysis oil by circulating heating water to each of the preheater and the heater; a condenser that receives the light oil detached from the pyrolysis oil through the heater and condenses it; a light oil storage unit configured to store the light oil condensed through the condenser; a cooler that supports cooling the pyrolysis oil from which light oil has detached in the heater; at least one filter that filters the pyrolysis oil cooled through the cooler to obtain high-purity pyrolysis oil; a pyrolysis oil storage tank that stores the pyrolysis oil filtered through the filter; and a cooling water supply unit that supports cooling the pyrolysis oil or light oil by circulating cooling water to each of the condenser and the cooler. The preheater comprises: a chamber having a circulation space formed inside, a first inlet pipe supporting the entry of pyrolysis oil into the circulation space on one side, and a first discharge pipe configured at a position corresponding to the first inlet pipe to discharge the pyrolysis oil that has been preheated in the circulation space; a circulation pipe configured in the circulation space of the chamber, including a second inlet pipe receiving heating water provided through a boiler on one side, and a second discharge pipe supporting the re-entry of heating water into the boiler on the other side; a plurality of partitions configured in the circulation space of the chamber, configured in close proximity to the first inlet pipe and the first discharge pipe to support heat exchange between the pyrolysis oil and the circulation pipe between the first inlet pipe and the first discharge pipe; and at least one retention partition configured between the plurality of partitions, including an alternating upper and lower discharge hole that delays the movement of the pyrolysis oil from the first inlet pipe to the first discharge pipe, thereby extending the contact time with the circulation pipe and inducing an improvement in heat exchange efficiency.The heater comprises: a heating chamber having a heating space of a certain size formed inside and a third inlet pipe receiving pyrolysis oil on one side, a third outlet pipe configured to correspond to the third inlet pipe to support the pyrolysis oil from which light oil has been removed so that it may enter a cooler, and a fourth inlet / outlet pipe supporting the light oil volatilizing from the heating of the heating space to enter the other side; a heating pipe configured within the heating chamber and having a fifth inlet pipe supporting the entry of heating water on one side and a fourth outlet pipe configured at a position corresponding to the fifth inlet pipe to support the re-entry of heating water into a boiler after it has circulated through the heating space; a stirring unit configured in the heating space of the heating chamber to support the improvement of the separation efficiency of light oil from the pyrolysis oil by expanding the contact area of ​​the pyrolysis oil with the heating pipe to induce the pyrolysis oil to be heated evenly; and a retention pipe to retain the light oil discharged through the fourth outlet pipe to filter out foreign substances. A light oil separation system comprising: a filter unit configured at one end of the retention pipe to filter the light oil and induce the discharge of high-purity light oil with a low flash point; and a stirring unit provided inside the heating chamber to induce uniform heating, and immediately removing foreign substances from the volatile light oil through the retention pipe and filter unit directly connected to the heating chamber. Claim 2 delete Claim 3 delete

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