Pretreatment apparatus for pyrolysis oil reduction system

Abstract

The purpose of the present invention is to improve the efficiency of a reduction system through continuous pyrolysis processing, by compressing and pulverizing collected waste plastics to a predetermined size and supporting smooth acquisition of pyrolysis oil through a decomposition furnace. To this end, the present invention includes a pretreatment apparatus which is formed on one side of a decomposition furnace so as to continuously provide a predetermined amount of waste plastics to the decomposition furnace, the pretreatment device comprising: a collecting unit for storing collected waste plastics; a first transfer unit which is formed inside the collecting unit to support forcible transfer of the stored waste plastics by a predetermined amount; a second transfer unit which is formed on one side of the first transfer unit, receives the waste plastics forcibly transferred from the first transfer unit, and forcibly transfers the waste plastics to the other side; a third transfer unit which is formed on one side of the second transfer unit to support primary compression while forcibly transferring the waste plastics, forcibly transferred by the second transfer unit, vertically downward; a fourth transfer unit for enabling secondary compression while forcibly transferring the primarily compressed waste plastics, transferred by the third transfer unit, to the decomposition furnace; a joint unit which is formed between the fourth transfer unit and the decomposition furnace to support stable transfer of the waste plastics by absorbing the thermal expansion and vibration of the decomposition furnace; and an airtight part which is formed between the airtight part and the decomposition furnace so as to prevent harmful gas generated in the decomposition furnace from being exposed to the outside.

Description

Pretreatment device of pyrolysis oil reduction system

[0001] The present invention relates to a pretreatment device for a pyrolysis oil reduction system, and more specifically, to a pretreatment device for a pyrolysis oil reduction system that compresses and crushes collected waste plastic into a certain size to support smooth acquisition of pyrolysis oil through a decomposition furnace, thereby improving the efficiency of the reduction system through the performance of a continuous pyrolysis process.

[0002] In general, plastics are materials that can be formed by heating, pressurizing, or both, or resin products made from such materials. Typically, plastics refer to synthetic resins. While the final product is solid and has a high molecular weight, they possess fluidity during molding, making them easy to mold and produce products of various shapes. Furthermore, since plastics are manufactured into polymers by polymerizing various substances using petroleum as the main raw material, users can polymerize substances with desired properties to produce polymer compounds with diverse functions and properties, and their applications and usage are rapidly increasing. Furthermore, plastics, a type of petroleum compound that uses petroleum as the main raw material, are manufactured into polymers. Therefore, they are difficult to decompose, have excellent corrosion resistance, and can be used for long periods of time. They are easy to mold, allowing for the production of various shapes. Furthermore, their light weight allows them to be used in a variety of applications, from household goods to various industrial products. Consequently, their usage is rapidly increasing.

[0003] However, waste plastic discarded after use has the characteristic of being difficult to decompose, making it difficult to landfill, and when incinerated, various harmful gases are emitted, polluting the atmospheric environment, making it difficult to dispose of waste plastic.

[0004] Additionally, as the reserves of oil, including petroleum, which is the fuel used to produce waste plastic, decrease, the price of oil increases, and as resources are depleted, the need to reuse the oil present in waste plastic is increasing.

[0005] Accordingly, a waste plastic pyrolysis oil reduction system has recently been developed to increase the resource recyclability by reducing and recovering the pyrolysis oil contained within waste plastic.

[0006] A pyrolysis oil reduction system for obtaining pyrolysis oil from conventional waste plastic comprises a decomposition furnace for receiving waste plastic, heating it to a certain temperature, for example, 300 to 800°C, to thermally decompose it to form a liquid resin, a transport means provided on one side of the decomposition furnace for transporting the liquid resin, and a purification unit for receiving the liquid resin transported through the transport means and refining it to obtain pyrolysis oil.

[0007] However, the conventional pyrolysis oil reduction system has the problem that the efficiency of decomposition of waste plastic is low because the collected waste plastic is fed into the decomposition furnace without being crushed into a certain size, and it takes a long time to convert it into a liquid resin through the decomposition furnace due to the irregular size, and continuous operation cannot be maintained.

[0008] In order to solve the above-mentioned problems, the purpose of the present invention is to provide a pretreatment device for a pyrolysis oil reduction system that supports smooth acquisition of pyrolysis oil through a decomposition furnace by compressing and crushing collected waste plastic into a certain size, thereby improving the efficiency of the reduction system through the performance of a continuous pyrolysis process.

[0009] In order to achieve the above object, the present invention proposes a pretreatment device configured on one side of a decomposition furnace to continuously provide a certain amount of waste plastic to the decomposition furnace; the pretreatment device comprises: a collection unit configured to store collected waste plastic; a first conveying unit configured inside the collection unit to support the stored waste plastic so as to be forcibly conveyed in a certain amount; a second conveying unit configured on one side of the first conveying unit to receive waste plastic forcibly conveyed from the first conveying unit and forcibly convey it to the other side; a third conveying unit configured on one side of the second conveying unit to support waste plastic forcibly conveyed through the second conveying unit so as to be primarily compressed while vertically conveying it; a fourth conveying unit to forcibly convey the primarily compressed waste plastic conveyed through the third conveying unit toward the decomposition furnace while subjecting it to a second compression; It is characterized by including a joint part configured between the fourth transport part and the decomposition furnace to support stable transport of waste plastic by absorbing thermal expansion and vibration of the decomposition furnace; and a sealing part configured between the joint part and the decomposition furnace to prevent harmful gases generated in the decomposition furnace from being exposed to the outside.

[0010] In the present invention, it is preferable that the fourth conveying section includes: a third inlet formed to a constant length and provided with waste plastic conveyed from the third conveying section at one end; a third outlet formed at the other end and supporting the waste plastic so that it is conveyed to a sealed section; a third chamber formed between the third inlet and the third outlet, the third chamber having a shape of a vertically extending beam and a horizontally extending beam and including a compression section of a constant length so that the waste plastic is secondarily compressed; a fourth conveying screw formed inside the third chamber and forcibly conveying the waste plastic; a third power source formed at one end of the fourth conveying screw and generating a rotational force to provide a rotational force to the fourth conveying screw; and a heating member formed in the compression section of the third chamber and supporting the waste plastic conveyed through the fourth conveying screw so that the decomposition process in the decomposition furnace can be smoothly performed by melting the waste plastic through heating.

[0011] According to the present invention, by compressing and crushing collected waste plastic into a certain size and supporting smooth acquisition of pyrolysis oil through a decomposition furnace, there is an effect of improving the efficiency of the reduction system by performing a continuous pyrolysis process.

[0012] Figure 1 is a configuration diagram of a pyrolysis oil reduction system according to the present invention.

[0013] Figure 2 is a configuration diagram of a preprocessing device according to the present invention.

[0014] Figure 3 is an enlarged view showing the configuration of the second to fourth transport units according to the present invention.

[0015] Figure 4 is an enlarged view showing the configuration relationship of the joint part and the sealing part according to the present invention.

[0016] Figure 5 is an exploded cross-sectional view of a confidential part according to the present invention.

[0017] Figure 6 is a cross-sectional view showing the configuration of a confidential part according to the present invention.

[0018] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below 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 solely 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 of the claims.

[0019] Meanwhile, the terminology used in this specification is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise. As used herein, "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 attached drawings.

[0020]

[0021] The pyrolysis oil reduction system of the present invention, as illustrated in Fig. 1, comprises a pretreatment device (10), a decomposition furnace (20), and a residue conveying device (30). Here, the decomposition furnace (20) receives waste plastic compressed and crushed to a certain size through the pretreatment device (10) to produce pyrolysis oil, and the residue conveying device (10) obtains pyrolysis oil through waste plastic through the decomposition furnace (20) and then discharges the produced residues, etc. to the outside.

[0022] The preprocessing device (10) compresses and crushes the collected waste plastic into a certain size, thereby supporting the smooth acquisition of pyrolysis oil through the decomposition furnace (20), thereby improving the efficiency of the reduction system by performing a continuous pyrolysis process.

[0023] As shown in FIG. 2, the above preprocessing device (10) includes a collection unit (100), a first transfer unit (200), a second transfer unit (300), a third transfer unit (400), a fourth transfer unit (500), a joint unit (600), and a sealing unit (700).

[0024] The collection unit (100) is formed to a certain size and configured to store waste plastic inside. The collection unit (100) includes an inlet (110) configured on one side, for example, the upper side, to support the input of waste plastic, and an outlet (120) configured on the other side, for example, the lower side, to support the discharge of the stored waste plastic.

[0025] The first transport unit (200) is configured on one side of the inside of the collection unit (100), for example, at the bottom, and supports waste plastic stored in the collection unit (100) to be forcibly discharged through the discharge port (120). In this case, waste plastic discharged through the first transport unit (200) is transferred to the second transport unit (300).

[0026] The first transport unit (200) is configured on the inside of the collection unit (100) and includes a first transport screw (210) that rotates by externally provided rotational force to forcefully transport waste plastic to one side, for example, toward the discharge port (120).

[0027] In addition, one end of the first transfer screw (210) includes a first power transmission member (220) that receives rotational force and supports the first transfer screw (210) so that it can rotate.

[0028] The second transport unit (300) is configured on one side of the first transport unit (200) to forcefully transport waste plastics that are forcibly transported through the first transport unit (200) to one side.

[0029] The second transfer unit (300) includes a first chamber (310), a second transfer screw (320), a second power transmission member (330), and a first power source (340), as illustrated in FIG. 3.

[0030] The first chamber (310) is formed with a certain length and size to form a transport path for waste plastics provided through the first transport unit (200). In this case, one side of the first chamber (310) includes a first inlet (312) that is configured to communicate with the discharge port (120) of the collection unit (100) and allows waste plastics discharged through the first transport unit (200) to enter. In addition, the other side of the first chamber (310) includes a first discharge port (314) that supports waste plastics forcibly transported through the second transport screw (320) to be forcibly discharged and to enter the third transport unit (400).

[0031] The second transport screw (320) is configured inside the first chamber (310) to enable the waste plastic to be forcibly transported to the first outlet (314) that entered through the first inlet (312).

[0032] The second power transmission member (330) is configured at one end of the second transfer screw (320) and supports the second transfer screw (320) so that it can rotate in one direction.

[0033] The first power source (340) is configured on one side of the second power transmission member (330) and generates and transmits rotational force so that the second power transmission member (330) can rotate in one direction.

[0034] The third transport unit (400) forces the waste plastic transported through the second transport unit (300) to be transported in one direction, for example, vertically downward, so that primary compression is performed.

[0035] The third transfer unit (400) includes a second chamber (410), a third transfer screw (420), and a second power source (430).

[0036] The second chamber (410) is formed to a certain length and size and is configured on one side of the second transport unit (300) to form a transport path for waste plastics provided through the second transport unit (300). In this case, the second chamber (410) is configured vertically so that waste plastics can be transported vertically downward from one side.

[0037] In addition, the second chamber (410) is formed in a shape of a top-down and bottom-up support so that the waste plastic can be compressed primarily as it goes downward.

[0038] In addition, the upper part of the second chamber (410) includes a second inlet (412) that is configured to communicate with the first outlet (314) of the second conveyor (300) and allows waste plastic discharged through the second conveyor (300) to enter.

[0039] In addition, the lower part of the second chamber (410) includes a second discharge port (414) that supports the waste plastic being forcibly conveyed through the third conveying screw (420) to be forcibly discharged and enter the fourth conveying section (500).

[0040] The third transport screw (420) is configured inside the second chamber (410) and supports the waste plastic so that it can be forcibly discharged through the second discharge port (414) as it rotates by the rotational force provided from the second power source (430). In this case, the waste plastic conveyed through the third transport screw (420) is compressed primarily as it is conveyed downward due to the upward-downward narrowing shape of the second chamber (410).

[0041] The second power source (430) is configured at one end of the third transfer screw (420) to generate rotational force and transmit the rotational force to the third transfer screw (420).

[0042] The fourth transport unit (500) supports the waste plastics transported through the third transport unit (400) so that they can be forcibly fed into the decomposition furnace (20) in a secondarily compressed state. In this case, the waste plastics forcibly fed through the fourth transport unit (500) pass through the joint unit (600) and the sealing unit (700) and enter the decomposition furnace (20).

[0043] The above fourth transfer unit (500) includes a third chamber (510), a fourth transfer screw (420), a third power source (530), and a heating member (540).

[0044] The third chamber (510) is formed to a certain length and size and is configured on one side of the third transport unit (400) to form a transport path for waste plastic provided through the third transport unit (400).

[0045] In addition, the third chamber (510) is formed in a shape of a top-down and bottom-up shape, so that the first compressed waste plastic is supplied through the third transport unit (400) and transported to the joint unit (600) in a second compressed state.

[0046] In addition, the third chamber (510) is formed with a third inlet (512) that is formed to be in communication with the second outlet (414) of the third conveying section (400) so that waste plastic can enter at one end, and a third outlet (514) that is formed at the other end to support the secondarily compressed waste plastic to enter the joint section (600).

[0047] In addition, the third chamber (510) has a shape of a vertical and horizontal axis, and a narrow pipe is formed with a fixed length, so that a compression section (516) of a fixed length is formed to support the waste plastic to maintain a secondary compressed state.

[0048] The fourth transfer screw (520) is configured inside the third chamber (510) to forcibly transfer waste plastic entering through the third inlet (512) to the third outlet (514).

[0049] The third power source (530) is configured at one end of the fourth transfer screw (520) to generate rotational force and transmit the rotational force to the fourth transfer screw (520).

[0050] The heating member (540) is configured in the compression section (516) of the third chamber (510), and heats the compression section (516) to a constant temperature, thereby allowing the waste plastic, which is forcibly conveyed by the rotation of the fourth conveying screw (520), to be provided to the decomposition furnace (20) in a heated state while undergoing secondary compression. That is, the heating member (540) supports the waste plastic so that it can enter the decomposition furnace (20) in a state where it is melted by heating along with secondary compression, thereby improving the decomposition efficiency of the waste plastic through the decomposition furnace (20).

[0051] The joint part (600) is configured on one side of the fourth transfer part (500), and is configured between the fourth transfer part (500) and the disassembly furnace (20), thereby buffering thermal expansion and vibration of the disassembly furnace (20) and supporting it so that continuous operation can be performed in a stable state.

[0052] The above joint part (600) includes an extension pipe (610), a first support flange (620), a second support flange (630), a corrugated pipe (640), and a gap adjusting member (650), as shown in FIG. 4.

[0053] The extension pipe (610) is fixed to one end of the third chamber (510) of the fourth transfer unit (500), and the other end is extended by a certain length and inserted into one end of the decomposition furnace (20), thereby supporting the waste plastic transferred through the fourth transfer unit (500) to be stably transferred to the decomposition furnace (20).

[0054] The first support flange (620) is configured at one end of the extension pipe (610) to support the configuration of the extension pipe (610).

[0055] The second support flange (630) is formed at one end of the sealing member (700), but is formed to be spaced apart from the first support flange (620) by a certain distance.

[0056] The corrugated pipe (640) is configured between the first and second support flanges (620) (630) and is configured to absorb thermal expansion and vibration of the decomposition furnace (20).

[0057] The gap adjusting member (650) is configured between the first and second support flanges (620) (630) to adjust the gap between the first and second support flanges (620) (630), thereby ensuring effective response to thermal expansion and vibration of the decomposition furnace (20). In this case, the gap adjusting member (650) is configured in multiple radial directions along the outer periphery of the first and second support flanges (620) (630).

[0058] The confidential part (700) is configured between the joint part (600) and the decomposition furnace (20) to prevent the oil vapor and water vapor generated by the action of the decomposition furnace (20) from leaking to the outside.

[0059] The above-mentioned sealing part (700) includes a fixed flange (710), a first sealing pusher (720), a sealing packing (730), a stop ring (740), a sealing filler (750), a second sealing pusher (760), a sealing plate (770), a sealing housing (780), a first adjusting part (792), and a second adjusting part (794), as shown in FIGS. 5 and 6.

[0060] A fixed flange (710) is configured at one end of the separator (20) to support the components of the sealing member (700) so that they can be stably configured.

[0061] The first sealing pusher (720) is inserted into the fixed flange (710) and moves forward or backward according to the control pressure of the first control unit (912) to pressurize the sealing packing (730), thereby providing a pressure force to improve the airtightness of the sealing packing (730).

[0062] The sealing packing (730) is configured between the first sealing pusher (720) and the stop ring (740), and between the other stop ring (740) and the second sealing pusher (760), and maintains or improves the airtightness by being compressed by the pressure provided by the first and second sealing pushers (760). In this case, the sealing packing (730) is configured in multiple pieces with a certain size. In addition, the sealing packing (730) may be graphite packing.

[0063] The stop ring (740) is configured to have a certain distance on each side of the center of the fixed flange (710), so as to secure a space in which a sealing filler (750) can be filled, and is configured in multiple numbers to prevent the gel-like sealing filler (750) from leaking to the outside. In this case, the stop ring (740) may be made of synthetic resin.

[0064] The sealing material (750) is injected into the space between multiple stop rings (740), thereby securing secondary sealing by the gel-like sealing material (750), thereby preventing harmful gases, etc. from leaking to the outside.

[0065] The above-mentioned airtight filler (750) may be composed of 60 to 70 parts by weight of nitrobutadiene rubber, 10 to 20 parts by weight of carbon black, 10 to 20 parts by weight of inorganic filler, 1 to 10 parts by weight of zinc oxide, 3 to 5 parts by weight of plasticizer, 1 to 5 parts by weight of antioxidant, and 0.5 to 3 parts by weight of vulcanizing agent.

[0066] The second sealing pusher (760) is provided on the other side, symmetrically to the first sealing pusher (720) provided on one side based on the sealing filler (750), and moves forward or backward according to the control pressure of the second control unit (914) to press the sealing packing (730) provided on one end of the stop ring (400) located on the other side, thereby providing a pressure force to improve the sealing property of the sealing packing (730).

[0067] The sealing plate (770) is configured on one end of the fixed flange (710), i.e., on the joint portion (600) side, and is fixed to one end of the sealing housing (780) described later to support the second adjusting portion (794) so ​​that it can be stably configured.

[0068] The sealing housing (780) is configured to surround the outer periphery of the fixed flange (710), thereby enhancing the sealing force between the fixed flange (710) and the sealing housing (780) and thereby preventing leakage of harmful gases. In this case, the sealing housing (780) is formed in a semi-split shape.

[0069] The first adjusting part (912) is configured between one end of the sealing housing (780) and the first sealing pusher (720), and supports the first sealing pusher (720) so that it can move forward or backward while being supported by the sealing housing (780) according to the adjustment amount.

[0070] The second control unit (914) is configured on a sealing plate (770) fixed to the other end of the sealing housing (780), and supports the second sealing pusher (760) so that it can move forward or backward depending on the adjustment amount.

[0071] The pretreatment device of the pyrolysis oil reduction system configured as described above discharges waste plastic collected in the collection unit (100) at a certain amount from the discharge port (120) of the collection unit (100) by the conveying force of the first conveying unit (200) configured inside the collection unit (100).

[0072] And, a certain amount of waste plastic discharged through the above discharge port (120) is transferred to the second transfer unit (300) and vertically transferred downward by the third transfer unit (400) located on the other side.

[0073] At this time, the second chamber (410) of the third transport unit (400) is formed in a shape of a top-down and bottom-up shape, and primary compression is performed in which the waste plastic transported downward is gradually compressed.

[0074] Additionally, the waste plastic is forcibly transported toward the decomposition furnace (20) by the fourth transport unit (500) that receives the first compressed waste plastic.

[0075] At this time, the third chamber (510) of the fourth conveying unit (500) is formed in a shape of a top-down and bottom-up, so that the waste plastic is compressed for the second time, and in particular, a heating member (540) is formed in a compression section (516) having a certain length at one end of the third chamber (510), so that the waste plastic is melted by the heating member (540) and supplied to the decomposition furnace (20) in a compressed and airtight state, thereby supporting the thermal decomposition process in the decomposition furnace (20) to be carried out more easily.

Claims

1. A pretreatment device is provided on one side of a decomposition furnace to enable continuous provision of a certain amount of waste plastic to the decomposition furnace; The above pretreatment device comprises a collection unit for storing collected waste plastic; A first conveying unit configured on the inside of the above-mentioned collecting unit to support the stored waste plastic so that it is forcibly conveyed in a certain amount; A second transfer unit configured on one side of the first transfer unit to receive waste plastic forcibly transferred from the first transfer unit and forcibly transfer it to the other side; A third conveying section configured on one side of the second conveying section to support the waste plastic being forcibly conveyed through the second conveying section by forcibly conveying it vertically downwards while performing primary compression; A fourth conveyor that forcibly conveys the primary compressed waste plastics conveyed through the third conveyor toward the decomposition furnace and compresses them a second time; A joint part configured between the fourth transport part and the decomposition part to absorb thermal expansion and vibration of the decomposition part and support stable transport of waste plastic; and A sealing member configured between the above joint and the decomposition furnace to prevent harmful gases generated in the decomposition furnace from being exposed to the outside; A pretreatment device for a pyrolysis oil reduction system, characterized by including a.

2. In paragraph 1, the fourth transport unit, A third inlet formed to a predetermined length and provided with waste plastic conveyed from a third conveying section at one end, a third outlet formed at the other end and supporting the waste plastic so that it is conveyed to a sealed section, and a third chamber formed between the third inlet and the third outlet and having a compression section of a predetermined length so that the waste plastic is compressed for the second time; A fourth transport screw configured inside the third chamber to forcibly transport waste plastic; A third power source configured at one end of the fourth transfer screw and generating a rotational force to provide rotational force to the fourth transfer screw; and A heating member configured in the compression section of the third chamber to melt waste plastic transported through the fourth transport screw by heating it and to support the decomposition process in the decomposition furnace so that it can proceed smoothly; A pretreatment device for a pyrolysis oil reduction system, characterized by including a.

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