Incinerator apparatus for recycling waste heat

Abstract

The present invention comprises: an input hopper for introducing waste; a combustion chamber for incinerating waste introduced into the input hopper; an exhaust gas treatment unit communicating with the combustion chamber and treating exhaust gas discharged from the combustion chamber; and a water jacket configured on the upper outer periphery of the combustion chamber and supplying to the outside a heat exchange medium that exchanges heat with waste heat released from the combustion chamber to the outside. The incinerator for recycling discharged waste heat comprises: a waste heat collection unit configured on the upper outer periphery of the combustion chamber and collecting waste heat discharged from the combustion chamber to the outside and supplying it to the outside; wherein the water jacket comprises a housing configured to surround the combustion chamber while forming a gap from the combustion chamber at the top of the combustion chamber and forming a space inside, a plurality of partitions that reinforce the housing from the inside and form a zigzag flow path, a supply line that supplies a heat exchange medium in communication with one end of the flow path, and a discharge line that discharges the heat exchange medium after heat exchange in communication with the other end of the flow path, wherein a pair of heat-insulating rims are configured in the gap between the side of the water jacket and the combustion chamber, and a discharge hole for discharging the waste heat after heat exchange is formed at the upper end of the heat-insulating rims, and a guiding rim is protruded on the lower surface of the water jacket, formed in a zigzag shape with an upward sloping gradient at each end to form a second flow path. It is about the device.

Description

Technology Field

[0001] The present invention relates to an incinerator device capable of recycling waste heat released to the outside from a combustion chamber. Background Technology

[0003] In the past, various types of waste, including garbage, were disposed of by landfilling; however, due to the recent difficulties in selecting landfill sites, the practice is gradually shifting toward incineration.

[0004] One method of incinerating waste involves loading the waste into an incinerator and supplying a heat source and air to burn it. When such waste is incinerated, exhaust gas is generated during the combustion process, and this exhaust gas contains hazardous air pollutants such as fly ash, carbon monoxide, acid gas, nitrogen oxides, heavy metals, and dioxins.

[0005] A gas treatment facility is used to remove pollutants contained in exhaust gas. The appropriate temperature for operating the gas treatment facility is approximately 220°C, but the temperature of the exhaust gas is a high temperature of approximately 900 to 1100°C.

[0006] Therefore, removing pollutants is only possible by lowering the temperature of the exhaust gas. Cooling devices and waste heat recovery systems are used to lower the temperature of the exhaust gas; in particular, a waste heat recovery system utilizing water pipes produces steam from the waste heat generated during incineration.

[0007] Meanwhile, in relation to this, Korean Patent Registration No. 10-0807200 (Title of Invention: Waste Heat Recovery Device Integrated with Incinerator) discloses a configuration comprising an inlet into which waste is introduced, a first incinerator for primary combustion of waste, a second incinerator for secondary combustion of waste, a first waste heat recovery unit installed inside the second incinerator for recovering heat generated during incineration, a second waste heat recovery unit for secondary recovery of heat generated during incineration, and a duct for discharging exhaust gas.

[0008] The above technology presents a technology for recycling waste heat from exhaust gas, but it does not present any configuration for utilizing waste heat released outside the first incinerator during the incineration process in the first incinerator. Furthermore, the release of such waste heat can also be a cause of atmospheric pollution. Prior art literature

[0010] Republic of Korea Patent Registration No. 10-0807200 The problem to be solved

[0011] Therefore, the present invention aims to provide an eco-friendly and energy-efficient incinerator device by recycling not only the waste heat from exhaust gases generated in the incinerator but also the waste heat emitted from the incinerator itself during the incineration process. means of solving the problem

[0013] An incinerator device for recycling discharged waste heat according to the present invention for achieving the above-mentioned purpose (hereinafter referred to as the "device of the present invention") comprises: an input hopper for introducing waste; a combustion chamber for incinerating waste introduced into the input hopper; an exhaust gas treatment unit communicating with the combustion chamber and treating exhaust gas discharged from the combustion chamber; and a water jacket configured on the upper outer periphery of the combustion chamber and supplying to the outside a heat exchange medium that performs heat exchange with the waste heat discharged from the combustion chamber to the outside. The invention includes a waste heat collection unit configured on the upper outer periphery of the combustion chamber and collecting waste heat released from the combustion chamber to the outside and supplying it to the outside; wherein the water jacket comprises a housing configured to surround the combustion chamber while forming a space between the combustion chamber and the upper part of the combustion chamber and forming a space inside, a plurality of partitions that reinforce the housing from the inside and form a zigzag flow path, a supply line that supplies a heat exchange medium in communication with one end of the flow path, and a discharge line that discharges the heat exchange medium after heat exchange in communication with the other end of the flow path, wherein a pair of heat-insulating rims are configured in the space between the side of the water jacket and the combustion chamber, and a discharge hole is formed at the upper part of the heat-insulating rims for discharging the waste heat after heat exchange, and a guide rim is formed protruding from the lower surface of the water jacket, which is formed in a zigzag shape while forming an upward slope at each end to form a second flow path.

[0014] As an example, the waste heat collection unit is characterized by including a collection jacket shaped to surround the combustion chamber above the water jacket, and a waste heat discharge pipe that supplies the waste heat collected in the collection jacket to the outside.

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[0019] As an example, the lower part of a pair of thermal insulation frames is characterized by having multiple guide stages that guide waste heat toward the water jacket, with the lower part in contact with the outer periphery of the combustion chamber. Effects of the invention

[0021] As explained above, the device of the present invention is environmentally friendly and has economic advantages by recycling waste heat emitted from the incinerator itself separately from the recycling of waste heat from the exhaust gas of the incinerator. Brief explanation of the drawing

[0023] FIG. 1 is a schematic diagram showing an apparatus of the present invention. FIG. 2 is a photograph showing the device of the present invention. FIGS. 3 and FIGS. 4 are a side view and a perspective view showing the operating state of a water jacket as one configuration of the present invention. FIG. 5 is a front view showing an embodiment of a water jacket as a configuration of the present invention. FIG. 6 is an operating state diagram of the embodiment shown in FIG. 5. FIG. 7 is a partial diagram showing another embodiment of a water jacket as one configuration of the present invention. FIG. 8 is a perspective view showing the heat shielding edge and guide section illustrated in FIG. 7. Specific details for implementing the invention

[0024] A preferred embodiment according to the present invention will be described in detail below.

[0025] The device (1) of the present invention is characterized by comprising: an input hopper (2) for inputting waste; a combustion chamber (3) for incinerating waste input into the input hopper (2); an exhaust gas treatment unit (4) communicating with the combustion chamber (3) and treating exhaust gas discharged from the combustion chamber (3); a water jacket (5) configured on the upper outer periphery of the combustion chamber (3) and supplying to the outside a heat exchange medium that exchanges heat with waste heat released to the outside from the combustion chamber (3); and a waste heat collection unit (6) configured on the upper outer periphery of the combustion chamber (3) and collecting waste heat released to the outside from the combustion chamber and supplying to the outside.

[0026] That is, the device (1) of the present invention is characterized by recycling the waste heat of the exhaust gas in the exhaust gas treatment unit (4) as a known technology, as well as supplying the waste heat emitted to the outside during the combustion process in the combustion chamber (3) itself to the outside and supplying a heat exchange medium heated through heat exchange with the waste heat to the outside.

[0027] The above input hopper (2) corresponds to a configuration that supplies waste uniformly and safely to the combustion chamber (3).

[0028] The above combustion chamber (3) is configured to generate combustible gas and thermal energy by primary combustion of the introduced waste. The thermal decomposition of the waste is achieved through the incineration of the waste, and the resulting product of this thermal decomposition is discharged to the outside, while the high-temperature exhaust gas generated during this process is directed to the exhaust gas treatment unit (4) at the rear.

[0029] Since there are various known operating mechanisms for such combustion chambers (3), a detailed description thereof is omitted.

[0030] The exhaust gas treatment unit (4) above functions as a secondary combustion zone in conjunction with the combustion chamber (3), thereby completely burning the remaining combustible components in the exhaust gas after primary combustion to remove harmful substances.

[0031] The exhaust gas is heated to 700 to 1100°C or higher by placing a high-temperature burner or an oxidation catalyst to oxidize carbon monoxide (CO), volatile organic compounds (VOCs), dioxin precursors, etc.

[0032] In addition, the exhaust gas treatment unit (4) can recover the thermal energy of the high-temperature exhaust gas and recycle it into boiler water, process heat, etc.

[0033] In addition, the exhaust gas treatment unit (4) can perform a purification operation to remove pollutants from the exhaust gas cooled through heat exchange.

[0034] Since the secondary combustion, waste heat recovery, and purification of the exhaust gas treatment unit (4) can be performed using various known technologies, a detailed description thereof is omitted.

[0035] As shown in FIG. 3, the water jacket (5) is configured to surround the combustion chamber (3) while forming a gap from the combustion chamber (3) on the upper part of the combustion chamber (3), and is characterized by including a supply line (54) for supplying a heat exchange medium on one side and a discharge line (55) for discharging the heat exchange medium after heat exchange on the other side.

[0036] Here, the supply line (54), although not shown in the drawing, can be connected to the boiler feedwater tank to supply water to the water jacket (5) as a heat exchange medium, and the discharge line (55) can also be connected to the boiler feedwater tank to supply heated water that has undergone heat exchange to the boiler feedwater tank. For example, water supplied to the water jacket (5) at approximately 51.1°C can be heated to 56.5°C through heat exchange with the waste heat (H1) emitted from the combustion chamber (3) and supplied.

[0037] As shown in FIG. 3, the water jacket (5) is installed so as to be spaced apart (d) from the upper part of the combustion chamber (3), so as to control the deterioration of the combustion chamber (3)'s function caused by heat exchange between the water jacket (5) and the combustion chamber (3).

[0038] Various known technologies can be applied to the technology that allows the water jacket (5) to be mounted with a gap (d) formed between it and the combustion chamber (3). For example, as shown in FIG. 2, the water jacket (5) can be mounted with a gap (d) formed between it and the combustion chamber (3) by means of a support (not shown in the drawing) in the collection jacket (61) described below.

[0039] In addition, the above water jacket (5) is provided with an example comprising a housing (51) that surrounds the combustion chamber (3) while forming an internal space to further increase heat exchange efficiency, a plurality of partitions (52) that reinforce the housing (51) from the inside and form a zigzag flow path (53), a supply line (54) communicating with one end of the flow path (53), and a discharge line (55) communicating with the other end of the flow path (53).

[0040] The thermal deformation of the housing (51) is controlled by the configuration of the partition (52) and the flow path (53), and the heat exchange efficiency is increased by extending the contact time between the heat exchange medium and the waste heat (H1) emitted from the combustion chamber (3).

[0041] The above waste heat collection unit (6) is characterized by including a collection jacket (61) that surrounds the combustion chamber (3) at the top of the combustion chamber (3), and a waste heat discharge pipe (62) that supplies the waste heat collected in the collection jacket (61) to the outside.

[0042] As shown in the drawing, the above-mentioned collection jacket (61) is configured to surround the combustion chamber (3) from the upper part of the combustion chamber (3), and a water jacket (5) can be placed between the combustion chamber (3) and the collection jacket (61).

[0043] The above-mentioned collection jacket (61) is configured to collect waste heat (H2) emitted from the combustion chamber (3), and as shown in the drawing, it is configured in a shape that narrows in diameter toward the waste heat discharge pipe (62) so that the collected waste heat (H2) can be easily discharged through the waste heat discharge pipe (62).

[0044] Here, waste heat (H2) is heat emitted from the combustion chamber (3) when the water jacket (5) is not placed between the collection jacket (61) and the combustion chamber (3), and corresponds to heat emitted from the combustion chamber (3) and passed through the water jacket (5) when the water jacket (5) is placed between the collection jacket (61) and the combustion chamber (3).

[0045] The waste heat (H2) collected in this way can be supplied to a recycling facility through the waste heat discharge pipe (62), and the waste heat (H2) can be supplied back to the combustion chamber (3) as a recycling facility. For example, the collected waste heat (H2) can be circulated to the combustion chamber (3) with heat of about 52°C so that combustion energy in the combustion chamber (3) can be reduced.

[0046] In addition, the present invention provides an example in which a pair of heat-insulating rims (58) are formed in the gap between the side of the water jacket (5) and the combustion chamber (3), as seen in FIG. 5. To this end, the heat-insulating rims (58) are formed with a curvature facing the combustion chamber (3) so that the lower end of the heat-insulating rims (58) completely contacts the outer periphery of the combustion chamber (3), thereby controlling the leakage of waste heat (H1) emitted from the combustion chamber (3) to the outside.

[0047] By configuring the heat shielding rim (58) in this way, a closed space is formed between the water jacket (5) and the combustion chamber (3), thereby controlling the leakage of waste heat (H1) emitted from the combustion chamber (3) to the outside of the water jacket (5) and preventing a decrease in heat exchange efficiency.

[0048] The above heat shielding frame (58) is designed so that the front and rear directions of the water jacket (5) and the combustion chamber (3) are closed in the drawing of FIG. 5, and the lower ends of both sides are left open. Since the waste heat (H1) will rise by convection, it is acceptable for the lower ends of both sides to be left open, and the newly generated waste heat (H1) is allowed to continuously flow into the space between the water jacket (5) and the combustion chamber (3).

[0049] These heat-insulating frames (58) should be made of a material with low thermal conductivity, for example, ceramic, so that not only heat insulation performance but also durability against heat is achieved.

[0050] In addition, as shown in the drawing, a discharge hole (581) is formed at the upper part of the heat-insulating rim (58) to discharge waste heat (H1) that has undergone heat exchange to the outside. This is intended to ensure that waste heat (H1) that has undergone heat exchange is discharged through the discharge hole (581) so that if it remains continuously in the space between the water jacket (5) and the combustion chamber (3), the heat exchange efficiency may decrease, and that waste heat (H1) that has not undergone heat exchange is continuously introduced into the space between the water jacket (5) and the combustion chamber (3).

[0051] Due to the configuration of the exhaust port (581), waste heat (H1) rises by convection in the space between the water jacket (5) and the combustion chamber (3) and is discharged through the exhaust port (581), and waste heat (H1) that has not undergone heat exchange flows in from the downward direction or rises from the internal space, thereby forming a continuous upward flow of waste heat (H1).

[0052] The reason the above discharge port (581) is configured at the upper part of the heat shielding rim (58) is to facilitate the aforementioned circulation, as high-temperature waste heat (H1) will continuously rise in the space between the water jacket (5) and the combustion chamber (3).

[0053] As previously mentioned, a continuous flow of waste heat (H1) is formed from the downward direction to the upward direction through the discharge port (581) in the space between the water jacket (5) and the combustion chamber (3). The present invention provides an example in which the waste heat (H1) is allowed to have a long contact time with the water jacket (5) in this flow to increase the heat exchange efficiency.

[0054] In this embodiment, as shown in FIGS. 5 and 6, the lower surface of the water jacket (5) is characterized by having a guiding edge (56) protruding from it, which is formed in a zigzag shape with an upward slope at each end to form a second flow path (57).

[0055] As seen in the drawing, waste heat (H1) flows upward in the space between the water jacket (5) and the combustion chamber (3). During the upward flow process, it comes into contact with the lower surface of the water jacket (5) and flows in a zigzag pattern along the flow path (57) formed by the guide edge (56), thereby extending the contact time between the waste heat (H1) and the water jacket (5).

[0056] In the case of the above-mentioned guide rim (56), as shown in the drawing, a slope is formed at each end in the direction of the center (upward direction) so that waste heat (H1) flows upward in a zigzag pattern at each end, and the formation of dead zones is controlled by ensuring that the flow is smooth due to the slope.

[0057] In addition, a control jaw (59) is configured to protrude from each discharge hole (581) in the center so that the waste heat (H1) induced into the center is controlled to escape directly through the discharge hole (581), thereby ensuring a sufficient residence time for the waste heat (H1) and further increasing the heat transfer coefficient through the formation of turbulence.

[0058] In addition, as shown in FIGS. 7 and 8, an example is presented in which the lower end of a pair of heat shielding frames (58) is configured with a plurality of guide ends (582) that guide waste heat (H1) toward the water jacket (5) while the lower end of the guide ends are in contact with the outer periphery of the combustion chamber (3).

[0059] The waste heat (H1) emitted from the combustion chamber (3) collides with each induction stage (582) during the upward process, and the waste heat (H1) is induced in the direction of the lower surface of the water jacket (5) opposite the position of the induction stage (582), so that the waste heat (H1) is induced across the entire surface of the water jacket (5) and rises along the induction edge (56) at each position, thereby forming a more sufficient contact time and a more sufficient vortex.

[0060] In other words, this configuration doubles the heat transfer efficiency. Here, it is appropriate for each induction section (582) to be composed of a material such as ceramic, just like the heat shielding edge (58).

[0061] In addition, the above-mentioned guide section (582) and the above-mentioned guide rim (56) must each be formed at a height that does not interfere with each other.

[0063] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited to the above embodiments, and it is obvious that various modifications and variations from the description above may be possible by those skilled in the art to which the present invention belongs. Explanation of the symbols

[0065] 1: Device of the present invention 2: Input hopper 3: Combustion chamber 4: Exhaust gas treatment unit 5 : Water Jacket 6 : Waste Heat Rejection

Claims

Claim 1 An input hopper for inputting waste; a combustion chamber for incinerating waste input into the input hopper; an exhaust gas treatment unit communicating with the combustion chamber and treating exhaust gas discharged from the combustion chamber; and a water jacket configured on the upper outer periphery of the combustion chamber and supplying to the outside a heat exchange medium that exchanges heat with waste heat released from the combustion chamber to the outside. The incinerator for recycling discharged waste heat comprises: a waste heat collection unit configured on the upper outer periphery of the combustion chamber and collecting waste heat discharged from the combustion chamber to the outside and supplying it to the outside; wherein the water jacket comprises a housing configured to surround the combustion chamber while forming a gap from the combustion chamber at the top of the combustion chamber and forming a space inside, a plurality of partitions that reinforce the housing from the inside and form a zigzag flow path, a supply line that supplies a heat exchange medium in communication with one end of the flow path, and a discharge line that discharges the heat exchange medium after heat exchange in communication with the other end of the flow path, wherein a pair of heat-insulating rims are configured in the gap between the side of the water jacket and the combustion chamber, and a discharge hole for discharging the waste heat after heat exchange is formed at the upper end of the heat-insulating rims, and a guiding rim is protruded on the lower surface of the water jacket, formed in a zigzag shape with an upward sloping gradient at each end to form a second flow path. Device. Claim 2 delete Claim 3 delete Claim 4 An incinerator device for recycling released waste heat, characterized in that, in claim 1, the waste heat collection unit comprises a collection jacket shaped to surround the combustion chamber at the top of the combustion chamber and a waste heat discharge pipe for discharging waste heat collected in the collection jacket to the outside. Claim 5 delete Claim 6 delete Claim 7 An incinerator device for recycling discharged waste heat, characterized in that, in claim 1, the lower end of a pair of heat-insulating rims is configured with a plurality of guide ends that guide waste heat toward the water jacket while the lower end of the rim contacts the outer periphery of the combustion chamber.

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