Replaceable heating furnace, pyrolysis apparatus having same, and cooling apparatus connected thereto

Abstract

The present invention discloses a cooling apparatus and a pyrolysis apparatus having same, the cooling apparatus being connected to the pyrolysis apparatus to cool oil vapor transferred from the pyrolysis apparatus, wherein the cooling apparatus comprises a plurality of cooling assemblies disposed in parallel, the cooling assemblies communicate with one another via connecting pipes, and the connecting pipes are arranged to be vertically offset so that the oil vapor remains in one cooling assembly for as long as possible before being transferred to the next cooling assembly.

Description

Replaceable heating furnace and pyrolysis device equipped therewith and cooling device connected thereto

[0001] The present invention relates to a replaceable heating furnace, a pyrolysis device equipped with the same, and a cooling device connected thereto.

[0002]

[0003] The principle of pyrolyzing high-temperature oil involves placing high-temperature oil with a high boiling point, waste vinyl, waste oil, etc., into a pyrolysis furnace and heating them to decompose them into low-molecular-weight, light materials with a low boiling point. Among these, the hydrocarbon vapor (oil vapor) at the top is condensed using a heat exchanger, and the viscous residue at the bottom is heated to separate it into hydrocarbon vapor and heavy metal residue. The oil vapor is condensed into a liquid light oil that can be used to replace high-quality boilers, etc.

[0004] The applicant proposed boilers and incineration devices in various devices, such as the “multi-tube boiler using electric fuel as a simultaneous heat source” of Patent No. 10-1740533, the “electric boiler combined with a waste heat recovery boiler” of Patent No. 10-1734069, and the “automatic combustion device and combined boiler equipped therewith” of Patent No. 10-1894553.

[0005] In relation to a pyrolysis device, the applicant proposed a structure in the “Waste Oil Pyrolysis System” (Application No. 10-2023-0068451), filed on May 26, 2023, in which the space of the pyrolysis device is divided into a combustion chamber at the bottom and side and an oil vapor heating chamber excluding these, and the two spaces are separated by a partition. However, the oil vapor heating chamber is integrated with the pyrolysis device including an oil vapor exhaust duct and is not freely replaceable.

[0006] In this application and other commercially available pyrolysis devices or boilers, it is common practice to integrate the heating chamber or furnace (a tube installed inside the boiler drum, with its inner wall used as a combustion chamber and forming a passage for combustion gases and a heat transfer surface) where the materials to be heated, such as high-temperature oil, waste vinyl, and waste oil, are located, with the structure of the pyrolysis device or boiler. The rotary kiln pyrolysis machine currently in most common use operates for 8 to 10 hours after fuel is placed into the kiln, and then, in order to insert fuel such as waste vinyl again, fuel is introduced after waiting for the heated kiln interior to cool down, usually after 10 to 12 hours have passed. Therefore, there is a problem in that the machine can only be used about once a day.

[0007] If two heating furnaces are constructed for a single pyrolysis unit, and one furnace is operated while fuel such as waste vinyl is loaded into the other prepared furnace and left to stand, the furnace that has finished operating can be lifted by a crane and simultaneously replaced with the prepared furnace to be immediately inserted into the pyrolysis unit, the waiting time for cooling can be shortened and operational safety can be ensured.

[0008]

[0009] The present invention aims to provide a replaceable heating furnace, rather than an integral fixed type, and a heat exchanger equipped with the same in a pyrolysis device.

[0010] In addition, the present invention aims to provide a cooling device connected to the pyrolysis device.

[0011]

[0012] To achieve the above-mentioned objective, the present invention provides a cooling device connected to a pyrolysis device for cooling oil vapor delivered by the pyrolysis device, wherein the cooling device comprises a plurality of cooling assemblies installed in parallel, the cooling assemblies are interconnected by connecting pipes, and the connecting pipes are arranged in an offset manner vertically so that the oil vapor remains in one cooling assembly as much as possible and is delivered to the next cooling assembly.

[0013] A plurality of vertically extending oil vapor transfer passages are provided inside the cooling assembly, and a plurality of cooling fluid transfer pipes are installed between the oil vapor transfer passages to extend vertically. The side frame and the lower frame forming the exterior of the cooling assembly are in communication with each other, and each frame is formed with a double structure of inner and outer steel plates, so that a long, extended cooling fluid passage can be formed that is in communication with each other through the intermediate space between them.

[0014] Cooling water for cooling or heat transfer fluid or hot water for heating and removing oil vapor residue may be supplied to the above cooling fluid passage.

[0015] Furthermore, the present invention provides a pyrolysis device for discharging oil vapor to the above-described cooling device, wherein the pyrolysis device accommodates a heating furnace inside, and a plurality of support guide plates are installed at predetermined intervals in the height direction on the side interior of a partition steel plate forming the housing of the pyrolysis device, combustion heat ignited by a burner is supplied between the lower surface of the heating furnace and the lower surface of the partition steel plate, and a waste gas discharge port is installed in communication with the upper surface of the partition steel plate to discharge waste gas combusted by the burner, wherein the heating furnace is heated by the combustion heat of the burner and waste gas produced by the combustion of the burner, thereby heating the medium inside to form oil vapor, and the oil vapor rises and is discharged through an oil vapor discharge port connected to the heating furnace and supplied to the cooling device, and wherein the heating furnace has an independent structure that is sealed from other spaces of the pyrolysis device.

[0016] The above heating furnace is housed in a cylindrical inner steel plate that provides a heating chamber, and a plurality of lower lifting hooks for lifting the heating furnace are formed at the bottom inside the inner steel plate, and an upper lifting hook corresponding to the lower lifting hooks may be formed at the top inside the inner steel plate.

[0017] When viewed from the horizontal direction, the upper lifting hook is located on the perpendicular line connecting the midpoints of the two lower lifting hooks, so that when the two lower lifting hooks and one upper lifting hook are connected by a rope, a triangular shape can be formed with the longest side positioned horizontally at the bottom and the apex being the upper lifting hook.

[0018] The above support guide plate is installed so that, when viewed from the front-to-rear length direction of the pyrolysis device, the opening between the support guide plate and the partition plate is arranged in an alternating manner in the front and rear directions, allowing the waste gas generated from the bottom to flow in a zigzag pattern and stay there while heating the furnace.

[0019] Furthermore, the present invention relates to a pyrolysis system comprising a pyrolysis device and a cooling device connected to the pyrolysis device for cooling the oil vapor delivered by the pyrolysis device, wherein the pyrolysis device comprises a partition steel plate forming the exterior of the pyrolysis device and a heating furnace mounted inside the partition steel plate, wherein the heating furnace is replaceable and has a cylindrical shape providing a heating chamber, wherein an “”-shaped inner steel plate forms the framework of the heating furnace, the upper part of the inner steel plate extends to a lower connecting flange above the lower connecting flange, a bolt support is located on the lower side of the lower connecting flange, and a flange tightening bolt is installed on the lower surface of the bolt support, and an upper steel plate is mounted on the upper part of the inner steel plate to close the exterior of the heating furnace, and for the assembly of the inner steel plate and the upper steel plate, an upper connecting flange connected to the upper steel plate is butted against the lower connecting flange, and the lower connecting flange and the upper connecting flange are fastened with a flange tightening bolt, wherein a burner is mounted on the outer side of the lower part of the partition steel plate, and above the mounting position of the burner is the heating furnace A pyrolysis system is provided in which a support bracket is installed to support the lower surface.

[0020] A plurality of exhaust gas direction guide plates are installed at predetermined intervals in the height direction on the inner side of the partition plate, and the exhaust gas direction guide plates are installed to be in contact with the outer surface of the inner plate. When viewed from the front-to-rear length direction of the pyrolysis device, the openings between the exhaust gas direction guide plates and the partition plate are arranged in an alternating manner in the front and rear directions, so that the exhaust gas generated from the bottom can flow in a zigzag pattern and stay there to heat the furnace.

[0021] A vapor exhaust port is installed on the upper steel plate of the furnace to discharge oil vapor generated by heating inside the furnace, and the furnace and the partition steel plate are spatially separated so that exhaust gas cannot enter the furnace but rises upward along the side of the furnace and is discharged through the exhaust gas exhaust port, and the oil vapor inside the furnace is not discharged to another outside of the furnace but can be discharged to the outside through the vapor exhaust port.

[0022] The above cooling device comprises a plurality of cooling assemblies installed in parallel, wherein the cooling assemblies are connected to one another by connecting pipes, and the connecting pipes are arranged vertically offset so that oil vapor can remain in one cooling assembly as much as possible and be transferred to the next cooling assembly.

[0023] A plurality of vertically extending oil vapor transfer passages are provided inside the cooling assembly, and a plurality of cooling fluid transfer pipes are installed between the oil vapor transfer passages to extend vertically. The side frame and the lower frame forming the exterior of the cooling assembly are in communication with each other, and each frame is formed with a double structure of inner and outer steel plates, so that a long, extended cooling fluid passage can be formed that is in communication with each other through the intermediate space between them.

[0024]

[0025] According to the present invention, the efficiency of operation of the pyrolysis device is increased and the repair and maintenance of the heating furnace are facilitated through the replacement of the heating furnace in the pyrolysis device.

[0026] According to the present invention, the oil vapor delivered from the pyrolysis device is rapidly cooled, and the oil vapor residue can be effectively removed using hot water or heat transfer oil.

[0027]

[0028] FIG. 1 is a front cross-sectional view of a replaceable heating furnace mounted inside the pyrolysis device of the present invention;

[0029] FIG. 2 is a front cross-sectional view of the structure forming the pyrolysis device of the present invention;

[0030] FIG. 3 is a longitudinal side cross-sectional view illustrating the structure of the heating furnace of FIG. 1 mounted on the structure of the pyrolysis device of FIG. 2, showing the exhaust gas direction guide plate extended in the front-rear direction;

[0031] FIG. 4 is a front cross-sectional view of FIG. 3;

[0032] FIG. 5 is a diagram illustrating the flow of waste gas according to the present invention; and

[0033] FIG. 6 is a top-view cross-sectional view taken by cutting along the “” direction in FIG. 3, where FIG. 6(a) shows the case where the heating furnace is installed and FIG. 6(b) shows the case where the heating furnace is removed;

[0034] FIG. 7 is a plan view illustrating that the oil vapor outlets and oil vapor transfer pipes of the heating furnaces of two pyrolysis devices are combined and transferred to a cooling device; and

[0035] FIG. 8 is a drawing illustrating the structure of the cooling device of the present invention, the flow of the cooling fluid, and the flow of the oil vapor;

[0036] FIG. 9 is a cross-sectional view of a pyrolysis apparatus according to a second embodiment of the present invention;

[0037] FIG. 10 is a drawing illustrating the structure forming a pyrolysis device according to a second embodiment of the present invention;

[0038] FIG. 11 is a plan cross-sectional view of a pyrolysis apparatus according to a second embodiment of the present invention, such as FIG. 6; and

[0039] FIG. 12 is a drawing illustrating the lifting process of lifting the heating furnace of the second embodiment of the present invention from the pyrolysis device.

[0040]

[0041] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0042] A typical waste oil pyrolysis system includes a pyrolysis device, an oil vapor dust collector, an oil vapor cooling device, and a waste gas treatment system. High-temperature oil, waste vinyl, waste oil, etc., to be decomposed are supplied to the pyrolysis device. Heavy oil is supplied to the burner of the pyrolysis device to serve as a fuel source and heats the heating furnace of the pyrolysis device. Since the replaceable heating furnace (1) of the present invention is installed inside the pyrolysis device (1000), it will be described with a focus on this. For the entire pyrolysis system, the applicant may refer to the prior applicants “Waste Oil Pyrolysis System” (Application No. 10-2023-0068451) and “Rotary Kiln Type Pyrolysis System” (Application No. 10-2023-0071346).

[0043] <First embodiment of the pyrolysis device (1000)>

[0044] First, a replaceable heating furnace (1) mounted inside the pyrolysis device (1000) of the present invention will be described with reference to the front cross-sectional view of FIG. 1. It is illustrated based on the heating furnace (1) before it is mounted in the pyrolysis device (1000).

[0045] The furnace (1) is a curved rectangular tube shape that provides a heating chamber. An inner steel plate (9) in the shape of a “” forms the basic framework of the furnace (1). Reinforcement steel plates (30) are installed around the inner surface of the inner steel plate (9) at a predetermined height interval. The boundary between the left and right sides and the bottom surface of the inner steel plate (9) is formed with a smooth curve, and lifting hooks (23) for lifting the furnace (1) are formed on both sides of the bottom surface of the boundary. The reinforcement steel plates (30) extend a certain length upward from the bottom surface of the furnace (1).

[0046] Lifting hooks (31) are formed on both inner sides of the upper part of the inner steel plate (9). The upper part of the inner steel plate (9) extends to the lower flange (12) of the present invention and to the lower connecting flange (13) above it. A bolt support (21) is located on the lower side of the lower connecting flange (13), and a plurality of flange tightening bolts (20) are installed on the lower surface of the bolt support (21). Holes are formed in the lower connecting flange (13) and the bolt support (21) for the flange tightening bolts (20) to pass through.

[0047] Next, the structure forming the pyrolysis device (1000) of the present invention will be explained with reference to the front cross-sectional view of FIG. 2.

[0048] The partition plate (10) accommodating the heating furnace (1) in the pyrolysis device (1000) has a straight rectangular frame shape when viewed from the front and provides a large space inside. The lower part of the partition plate (10) is supported by a machine support (27). An insulating cover plate (18) is installed above the machine support (27) and around the outside of the partition plate (10) at a predetermined distance from the latter, thereby providing an insulating space (17).

[0049] A plurality of exhaust gas direction guide plates (5) are installed at predetermined intervals in the height direction inside the side of the partition steel plate (10). When viewed from the side of the partition steel plate (10), the exhaust gas direction guide plates (5) extend in a straight line over most of the length of the side (see FIG. 5). Near the top of the partition steel plate (10), an exhaust gas discharge port (7) is installed to discharge exhaust gas combusted by the burner (2).

[0050] A burner (2) is mounted on the outer side of the lower part, and an insulating material (25) is installed around the lower part to protect it from the combustion heat of the burner (2), and a support member (24) is installed on top of the insulating material (25).

[0051] FIG. 3 is a longitudinal side cross-sectional view showing the structure of the heating furnace (1) of FIG. 1 mounted on the structure of the pyrolysis device (1000) of FIG. 2, and FIG. 4 is a front cross-sectional view. For convenience, FIG. 3 shows the exhaust gas direction guide plate (5) extended in the front and rear directions.

[0052] Referring to both drawings, an upper steel plate (15) is mounted on the upper part of the furnace (1) to close the exterior of the furnace (1). To assemble the inner steel plate (9) and the upper steel plate (15), an upper connecting flange (14), which is, for example, welded to the upper steel plate (15), is placed on the lower connecting flange (13), and the lower connecting flange (13) and the upper connecting flange (14) are simultaneously fastened with flange tightening bolts (20).

[0053] The partition plate (10) does not extend to the upper plate (15), but an upper insulation plate (16) is installed to surround the outer surface of the upper plate (15) and perform the same function as the insulation cover plate (18). A lifting hook (23) is installed on the upper part of the upper plate (15). Since lifting hooks (23, 31) are installed at least three locations on the upper, lower, and middle of the heating furnace (1), the heating furnace (1) can be safely lifted, replaced, and installed without shaking by a crane.

[0054] The upper center is connected to a vapor discharge port (19), and the vapor heated inside the furnace (1) is transferred to, for example, a vapor dust collector through a vapor transfer pipe (22).

[0055] The lower part of the heating furnace (1) is supported by a support member (24). Also, as shown in FIG. 4, when the heating furnace (1) is mounted inside the partition plate (10), it is preferable that the exhaust gas direction guide plate (5) completely blocks the space between the outer surface of the heating furnace (1) and the inner surface of the partition plate (10).

[0056] As can be seen from these drawings, when the furnace (1) is installed inside the pyrolysis device (1000), the furnace (1) and other spaces of the pyrolysis device are separated and blocked, except for the oil vapor outlet (19). The waste gas from the combustion of fuel (heavy oil) in the combustion chamber, where a flame is emitted by the burner (2), does not enter the furnace (1) but rises upward along the side of the furnace (1) and is discharged through the waste gas discharge section (7). A medium (waste oil, vinyl, etc.) to be heated with combustion fuel is supplied into the furnace (1), and the oil vapor of the heated medium rises and is not discharged to the other outside of the furnace (1), but is discharged only to the outside through the oil vapor outlet (19).

[0057] FIG. 5 is a diagram illustrating the flow of exhaust gas according to the present invention. Exhaust gas combusted by the burner (2) flows upward from the bottom through the space between the two sides. When viewed from the front-to-back length direction, multiple exhaust gas direction guide plates (5) are installed in the height direction, and the openings between the exhaust gas direction guide plates (5) and the partition steel plate (10) are arranged in an alternating manner in the front and rear directions. Therefore, as shown in FIG. 5, the exhaust gas flows in a zigzag pattern, staying as much as possible to effectively heat the heating furnace (1), but does not flow upward and flows to the exhaust gas discharge section (7). It should be noted that the exhaust gas does not enter the interior of the heating furnace (1).

[0058] FIGS. 6(a) and FIGS. 6(b) are top-view cross-sectional views taken by cutting the “FF” direction in FIGS. 3, where FIGS. 6(a) shows the case where the heating furnace (1) is installed and FIGS. 6(b) shows the case where the heating furnace (1) is removed.

[0059] Referring to the two drawings together, the overall shape of the pyrolysis device (1000) of the present invention as viewed from above can be described as a track type consisting of an upper and lower opposing long straight frame and a curved frame connecting the frame on both sides. The heating furnace (1) and the partition plate (10) are manufactured to follow this shape. Support members (24) are placed at four locations in the front, back, left, and right to stably support the heating furnace (1). The track type is merely an example, and can be manufactured in various shapes such as square or circular.

[0060] The heating furnace (1) of the present invention is manufactured to be replaceable. In actual use, two heating furnaces are manufactured as described above. One heating furnace (1) is operated for pyrolysis in a pyrolysis device (1000), and fuel such as waste vinyl is placed into the other heating furnace prepared for use. After the heating furnace (1) finishes operating for pyrolysis, it is lifted by a crane and the other heating furnace (1) prepared for use is simultaneously replaced so that it can be immediately fed into the pyrolysis device.

[0061] Next, a preferred example of a cooling device (2000) connected to the pyrolysis device (1000) of the present invention will be described.

[0062] FIG. 7 illustrates a plan view in which the oil vapor discharge port (19) and the oil vapor transfer pipe (22) of the heating furnace (1) of two pyrolysis devices (1000) operating simultaneously are combined and transferred to a cooling device (2000). Although the explanation is based on the premise of the movement of oil vapor, the cooling device (2000) can also be used as a cooling device for steam from a steam boiler.

[0063] The cooling device (2000) includes a plurality of cooling assemblies (50) installed in parallel. The cooling assemblies (50) are connected to each other by connecting pipes (51), and the connecting pipes (51) are arranged vertically in an offset manner so that oil vapor stays in one cooling assembly (50) as much as possible before being transferred to the next cooling assembly (50), thereby increasing cooling efficiency. High-temperature oil vapor is introduced through an oil vapor inlet pipe (52), flows through the entire cooling device (2000), and is then discharged through an oil vapor discharge pipe (53).

[0064] FIG. 8 is a drawing for explaining the structure of the cooling device (2000) of the present invention, illustrating that oil vapor is introduced through the upper right connecting pipe (51) based on one cooling assembly (50), cooled, and then discharged through the upper left connecting pipe (51). A barrier wall (58) is installed in the upper chamber that communicates simultaneously with the two connecting pipes (51).

[0065] Inside the cooling assembly (50), a plurality of vertically extending oil vapor transfer passages (55) are provided. Between the oil vapor transfer passages (55), a plurality of cooling fluid transfer pipes (57) are installed to extend vertically.

[0066] The side frame (60) and the lower frame (61) forming the exterior of the cooling assembly (50) are connected to each other. Each frame has a double structure of inner and outer steel plates and provides a long, extended cooling fluid passage (62) that is connected to each other through the intermediate space between them. The side frame (60) is connected to a cooling fluid inlet pipe (63) that introduces cooling fluid from the outside. A shielding plate (64) is installed on the outside of the side frame (60) in the opposite direction facing the cooling fluid inlet pipe (63), and a cooling fluid discharge passage (65) is installed at the bottom thereof.

[0067] FIG. 8(b) is intended to illustrate the flow of cooling fluid introduced through the cooling fluid inlet pipe (63), and the space where the cooling fluid is filled is indicated in blue. The cooling fluid fills the entire cooling fluid transfer pipe (57) and the cooling fluid passage (62), and the overflowing cooling fluid flows downward through the space between the side frame (60) and the cover plate (64) and is discharged to the outside through the cooling fluid discharge path (65).

[0068] FIG. 8(c) further illustrates the flow of oil vapor in FIG. 8(b). The oil vapor introduced into the connecting pipe (51) on the right is blocked by the barrier wall (58) and cannot proceed directly to the left. Instead, it flows downward through the oil vapor transfer passage (55) on the right, then flows upward through the oil vapor transfer passage (55) installed on the left, and is delivered to the next cooling assembly (50). During the process of the oil vapor flowing up and down, it is always in contact with the cooling fluid transfer pipe (57), and since the side and bottom surfaces of the oil vapor are surrounded by the fluid of the cooling fluid passage (62), the oil vapor can be cooled very effectively. In other words, the cooling fluid transfer pipe (57) can be considered a heat exchange pipe.

[0069] The cooling fluid may use water from a water pipe. Alternatively, heat transfer fluid or hot water heated in a heat transfer fluid boiler or a hot water boiler may be used; in this case, it helps to remove foreign substances by heating the residue of oil vapor attached inside the device. That is, the cooling fluid of the present invention can be usefully utilized not only for "cooling" but also for cleaning or maintenance of the cooling device.

[0070] <Second embodiment of the pyrolysis device (1000a)>

[0071] Next, an improved second embodiment of the pyrolysis apparatus of the present invention will be described with reference to FIGS. 9 to 12. In the second embodiment, components corresponding to the positions of the first embodiment are given the same number and the symbol “a” is added. However, the same number does not mean that the structure and function are identical to those of the first embodiment.

[0072] FIG. 9 is a cross-sectional view of a pyrolysis device (1000a) according to a second embodiment of the present invention. A partition plate (10a) accommodating a heating furnace (1a) provides a large space inside. The lower part of the partition plate (10a) is supported by a machine support (27a). An insulating space is provided around the outside of the partition plate (10a) from above the machine support (27a).

[0073] A plurality of support guide plates (5a) are installed at predetermined intervals in the height direction on the side interior of the partition steel plate (10a). A waste gas discharge port (7a) is installed near the top of the partition steel plate (10a) to discharge waste gas combusted by the burner (2a).

[0074] A burner (2a) is mounted on the outer side of the lower part, and an insulating material (25a) is installed around the lower part to protect it from the combustion heat of the burner (2a). For example, two burners (2a) may be installed.

[0075] Next, the structure forming the pyrolysis device (1000a) according to the second embodiment of the present invention will be described with reference to FIG. 10. The heating furnace (1a) is a curved rectangular tube shape that provides a heating chamber. The boundary between the left and right sides and the bottom surface of the inner steel plate (9a) is formed with a smooth curve. Unlike the first embodiment, a plurality of lifting hooks (23a) for lifting the heating furnace (1a) are formed on the inside of the inner steel plate (9a), rather than on the outside, adjacent to the boundary. Additionally, a lifting hook (23b) corresponding to the lifting hook (23a) is formed on the upper inside of the inner steel plate (9a), adjacent to the boundary. It is desirable that the lifting hook (23b) be positioned on the perpendicular line connecting the midpoints of the two lifting hooks (23a) when viewed from the horizontal direction, so that when the two lifting hooks (23a) and one lifting hook (23b) are connected by a rope, they form a stable triangular shape with the longest side positioned horizontally at the bottom and the apex being the lifting hook (23b). It can be understood that if four lifting hooks (23a) are installed at the bottom and four lifting hooks (23b) are installed at the top of the midpoint to lift a heavy furnace (1a), each of the four sides of the furnace (1a) can be lifted stably at the same time. When replacing the furnace (1a), a rope (r) for lifting the furnace (1a) is suspended between the two lifting hooks (23a, 23b). In the first embodiment, separate ropes must be attached to each of the lifting hook (23) and the lifting hook (31) to lift the furnace (1), but in the second embodiment, a single rope (r) can be suspended from the lifting hooks (23a, 23b) as a set, so the replacement of the furnace (1a) is easy and stable.

[0076] At least the upper edge of the inner plate (9a) is covered by the lower flange (12a). A bolt structure like that of the first embodiment in the lower flange (12a) is not mandatory and can be applied optionally.

[0077] An upper steel plate (15a) is mounted on the upper part of the heating furnace (1a) to close the exterior of the heating furnace (1a). An upper thermal insulation plate (16a) is installed around the outer surface of the upper steel plate (15a). The upper steel plate (15a) and the upper thermal insulation plate (16a) serve as a cap (lid), and an upper connecting flange (14a) is integrally formed on the lower surface thereof. The upper connecting flange (14a) can be bolted to the lower flange (12a) or mounted thereon.

[0078] The upper center is connected to a vapor discharge port (19a), and the vapor heated inside the heating furnace (1a) is transferred to, for example, a vapor dust collector through a vapor transfer pipe (22a).

[0079] In the same manner as in the first embodiment, when the heating furnace (1a) is installed inside the pyrolysis device (1000a), the heating furnace (1a) and other spaces of the pyrolysis device are separated and blocked except for the oil vapor outlet (19a), and the waste gas from the combustion of fuel (heavy oil) in the combustion chamber, where a flame is emitted by the burner (2a), cannot enter the heating furnace (1a) but rises upward along the side of the heating furnace (1a) and is discharged through the waste gas discharge section (7a). A medium (waste oil, vinyl, etc.) to be heated with combustion fuel is supplied into the heating furnace (1a), and the oil vapor of the heated medium rises and is not discharged to the other outside of the heating furnace (1a) but is discharged to the outside through the oil vapor outlet (19a).

[0080] The support guide plate (5a) of the second embodiment of the present invention can also be arranged as shown in FIG. 5 so that the exhaust gas flows in a zigzag pattern, stays in place as much as possible, effectively heats the heating furnace (1a), and flows to the exhaust gas discharge section (7a). Alternatively, the lower surface of each support guide plate (5a) can be supported by a support bracket (50a) to be used for supporting the side of the heating furnace (1a), or installed to provide both uses.

[0081] FIG. 11 is a planar cross-sectional view similar to FIG. 6, illustrating a case where a heating furnace (1a) is mounted. Similar to the first embodiment, it is a track type consisting of a long straight frame and a curved frame connecting the frame on both sides.

[0082] The heating furnace (1a) of the present invention described above is manufactured to be replaceable. In actual use, two heating furnaces are manufactured as described above, and one heating furnace (1a) is operated for pyrolysis in a pyrolysis device (1000a). Fuel such as waste vinyl is then placed into the other heating furnace and waited. After the heating furnace (1a) finishes operating for pyrolysis, it is lifted by a crane and the other heating furnace (1) is simultaneously replaced and immediately fed into the pyrolysis device. Alternatively, two pyrolysis devices (1000a) may be arranged in parallel and operated simultaneously, and the structure may be such that the oil vapor discharge port (19a) of the heating furnace (1a) and the oil vapor transfer pipe (22a) merge.

[0083] In the latter case, the configuration and function of the vapor cooling device (2000) described in FIGS. 7 and 8 are applied. However, the cooling device (2000) of FIGS. 7 and 8 is, of course, also applied in the case where one heating furnace (1a) and one pyrolysis device (1000a) are used.

[0084] FIG. 12 is a drawing illustrating the lifting process of lifting the heating furnace (1a) of the second embodiment of the present invention from the pyrolysis device (1000a).

[0085] First, the upper steel plate (15a) corresponding to the cap and the upper thermal insulation steel plate (16a) are separated.

[0086] Next, two lifting hooks (23a) and one lifting hook (23b) are used as modules, and a rope (r) is suspended so that the longest side is positioned horizontally at the bottom and the apex forms the lifting hook (23b), thereby lifting the heating furnace (1a), for example, with a crane.

[0087] FIG. 12b illustrates a drawing of the lifting operation when viewed from the long length direction of the heating furnace (1a), and FIG. 12b illustrates a drawing of the lifting operation when viewed from the relatively short length direction of the heating furnace (1a). However, it is not necessary to lift all four sides of the heating furnace (1a) simultaneously, and it is possible to lift, for example, two opposing sides.

[0088] In addition, as shown in FIG. 12, to lift a heavy heating furnace (1a), a plurality of studs are installed on the upper surface of the lower surface (90a) of the inner steel plate (9a), and a rope (r) can be wrapped around the lower surface (90a) and the studs, and then connected to the lifting hook (23a) and the lifting hook (23b).

[0089] Although preferred embodiments of the present invention have been described above, various changes and modifications are possible to the present invention, and it is obvious that the scope of the present invention extends to the same or equivalent scope as the claims described below.

Claims

1. A cooling device connected to a pyrolysis device and cooling the oil vapor delivered by the pyrolysis device, wherein the cooling device: A cooling device comprising a plurality of cooling assemblies installed in parallel, wherein the cooling assemblies are connected to one another by connecting pipes, and the connecting pipes are arranged vertically offset so that oil vapor remains in one cooling assembly as much as possible and is transferred to the next cooling assembly.

2. In Paragraph 1, A cooling device having a plurality of vertically extended oil vapor transfer passages provided inside the cooling assembly, a plurality of cooling fluid transfer pipes installed vertically between the oil vapor transfer passages, and a side frame and a lower frame forming the exterior of the cooling assembly communicating with each other, and each frame formed with a double structure of inner and outer steel plates, thereby forming a long, extended cooling fluid passage communicating with each other through the intermediate space between them.

3. In Paragraph 2, A cooling device in which cooling water for cooling or heat transfer fluid or hot water for heating and removing oil vapor residue is supplied to the above cooling fluid passage.

4. A pyrolysis device for discharging oil vapor to the cooling device of claim 1, wherein the pyrolysis device accommodates a heating furnace inside, and a plurality of support guide plates are installed at predetermined intervals in the height direction on the side interior of the partition steel plate forming the housing of the pyrolysis device, and combustion heat ignited by a burner is supplied between the lower surface of the heating furnace and the lower part of the partition steel plate, and A exhaust gas exhaust port is installed on the upper part of the above partition steel plate to discharge exhaust gas combusted by a burner, and A pyrolysis device, wherein the heating furnace is heated by the combustion heat of the burner and the exhaust gas produced by the combustion of the burner, thereby heating the medium inside to form oil vapor, the oil vapor rises and is discharged through an oil vapor outlet connected to the heating furnace and supplied to the cooling device, and the heating furnace is a sealed, independent structure separated from other spaces of the pyrolysis device.

5. In Paragraph 4, A pyrolysis device comprising a heating furnace having a housing formed of a cylindrical inner steel plate providing a heating chamber, wherein a plurality of lower lifting hooks for lifting the heating furnace are formed at the bottom inside the inner steel plate, and an upper lifting hook corresponding to the lower lifting hooks is formed at the top inside the inner steel plate.

6. In Paragraph 5, A pyrolysis device in which the upper lifting hook is located on the perpendicular line connecting the midpoints of the two lower lifting hooks when viewed from the horizontal direction, and when the two lower lifting hooks and one upper lifting hook are connected by a rope, the longest side is horizontally located at the bottom side and the apex is the upper lifting hook.

7. In Paragraph 4, A pyrolysis device in which the above-mentioned support guide plate is installed such that, when viewed from the front-to-rear longitudinal direction of the pyrolysis device, the opening between the support guide plate and the partition steel plate is arranged in an alternating manner in the front and rear directions, allowing the waste gas generated from the bottom to flow in a zigzag pattern and remain there while heating the furnace.

8. A pyrolysis system comprising a pyrolysis device and a cooling device connected to the pyrolysis device for cooling oil vapor delivered by the pyrolysis device, wherein the pyrolysis device comprises a partition steel plate forming the exterior of the pyrolysis device and a heating furnace mounted inside the partition steel plate, and The above heating furnace is replaceable and has a cylindrical shape providing a heating chamber, wherein a "U"-shaped inner steel plate forms the framework of the heating furnace, the upper part of the inner steel plate extends to a lower flange and a lower connecting flange above it, a bolt support is located on the lower side of the lower connecting flange, and a flange tightening bolt is installed on the lower surface of the bolt support, and an upper steel plate is mounted on the upper part of the inner steel plate to close the exterior of the heating furnace, and for the assembly of the inner steel plate and the upper steel plate, an upper connecting flange connected to the upper steel plate is butted against the lower connecting flange, and the lower connecting flange and the upper connecting flange are fastened with a flange tightening bolt. A pyrolysis system in which a burner is mounted on the outer side of the lower part of the partition plate, and a support bracket is installed above the mounting position of the burner to support the lower surface of the heating furnace.

9. In Paragraph 8, A pyrolysis system in which a plurality of exhaust gas direction guide plates are installed at predetermined intervals in the height direction on the side interior of the partition steel plate, the exhaust gas direction guide plates are installed to be in contact with the outer surface of the inner steel plate, and the openings between the exhaust gas direction guide plates and the partition steel plate are arranged in an alternating manner in the front and rear when viewed from the front-to-rear length direction of the pyrolysis device, so that exhaust gas generated from the bottom flows in a zigzag pattern and stays there while heating the furnace.

10. In Paragraph 9, A vapor exhaust port is installed on the upper steel plate of the furnace to discharge oil vapor generated by heating inside the furnace, and the furnace and the partition steel plate are spatially separated so that exhaust gas cannot enter the furnace but rises upward along the side of the furnace and is discharged through the exhaust gas exhaust port. A pyrolysis system in which oil vapor inside the furnace is not discharged to another outside of the furnace but is discharged to the outside through an oil vapor outlet.

11. In the 8th, the cooling device is: A pyrolysis system comprising a plurality of cooling assemblies installed in parallel, wherein the cooling assemblies are connected to one another by connecting pipes, and the connecting pipes are arranged vertically offset so that oil vapor remains in one cooling assembly as much as possible and is transferred to the next cooling assembly.

12. In Paragraph 11, A pyrolysis system in which a plurality of vertically extended oil vapor transfer passages are provided within the interior of the cooling assembly, and a plurality of cooling fluid transfer pipes are installed between the oil vapor transfer passages to extend vertically, and the side frame and the lower frame forming the exterior of the cooling assembly are in communication with each other, and each frame is formed with a double structure of inner and outer steel plates, so that a long, extended cooling fluid passage is formed in communication with each other through the intermediate space between them.

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