Hydrogen reform system using heat of exhaust gas from animal crematorium

Abstract

A reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium according to one embodiment of the present invention comprises: a crematorium for cremating a pet carcass; an exhaust gas outlet connected to the crematorium and discharging high-temperature exhaust gas generated during the cremation of the pet carcass; a hydrogen reformer connected to the exhaust gas outlet and generating reformed hydrogen by heat exchange with the waste heat contained in the exhaust gas; and a hydrogen supply channel connected to the hydrogen reformer and flowing the reformed hydrogen to the crematorium.

Description

Technology Field

[0001] The present invention relates to a system for producing reformed hydrogen through the recovery of waste heat from exhaust gas of a pet crematorium, which utilizes the waste heat from exhaust gas discharged from a crematorium during pet cremation to generate reformed hydrogen and allows the generated reformed hydrogen to be used as fuel in the crematorium. Background Technology

[0002] Currently, pet crematoriums generate high-temperature exhaust gases that contain large amounts of air pollutants, so they must be reprocessed before exhaust.

[0003] Since the exhaust gas generated from the incinerator must be burned up to 850°C to incinerate pollutants, it is burned to that temperature and then undergoes a final reprocessing process to be discharged at around 100°C.

[0004] In this case, heat is exchanged with the outside via air cooling to cool the exhaust gas, which fails to properly utilize the waste heat contained in the exhaust gas, and consequently causes negative environmental impacts.

[0005] Therefore, there is a need to develop technology that effectively recovers waste heat contained in the exhaust gas generated from pet crematoriums and recycles it into other energy systems. Prior art literature

[0006] Korean Patent Publication No. 10-2023-0170179, Dec. 19, 2023 The problem to be solved

[0007] The problem that the present invention aims to solve is to provide a reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium, which generates reformed hydrogen by utilizing the waste heat from the exhaust gas discharged from the crematorium during pet cremation and allows the generated reformed hydrogen to be used as fuel in the crematorium. means of solving the problem

[0008] A reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium according to an embodiment of the present invention for solving the above problem comprises: a crematorium for cremating a pet carcass; an exhaust gas outlet connected to the crematorium and discharging high-temperature exhaust gas generated during the cremation of the pet carcass; a hydrogen reformer connected to the exhaust gas outlet and generating reformed hydrogen by heat exchange with the waste heat contained in the exhaust gas; and a hydrogen supply channel connected to the hydrogen reformer and flowing the reformed hydrogen to the crematorium.

[0009] In addition, the crematorium comprises: a housing that forms an exterior and has an exhaust gas outlet connected to the upper portion; a crematorium pedestal provided inside the housing for introducing the pet carcass into the housing; a first burner provided inside the housing that sprays a flame to the crematorium pedestal to cremate the pet carcass and is connected to the hydrogen supply path; a second burner provided in the housing and above the first burner, which burns the exhaust gas generated after the cremation of the pet carcass and is connected to the hydrogen supply path; a first hydrogen nozzle provided in the housing, connected to the hydrogen supply path, and adjacent to the first burner; a second hydrogen nozzle provided in the housing, connected to the hydrogen supply path, and adjacent to the second burner; an inclined plate provided on the upper portion of the crematorium pedestal through which the exhaust gas rises; and a horizontal plate provided on the upper portion of the inclined plate and arranged in the housing to intersect with the inclined plate. and a cleaning nozzle provided at the lower part of the horizontal plate and spraying a cleaning fluid in the direction of the inclined plate; are included.

[0010] Additionally, the hydrogen supply path comprises: a main path connected to the hydrogen reformer to supply the reformed hydrogen from the hydrogen reformer; a first burner path connected to the main path, through which the reformed hydrogen flows, and equipped with a first valve; a second burner path connected to the main path, through which the reformed hydrogen flows, and equipped with a second valve; a first hydrogen nozzle path connected to the main path, through which the reformed hydrogen flows, and equipped with a first hydrogen valve; and a second hydrogen nozzle path connected to the main path, through which the reformed hydrogen flows, and equipped with a second hydrogen valve.

[0011] Additionally, the hydrogen reformer comprises: a hydrogen case connected to the exhaust gas outlet to receive the exhaust gas; a hydrogen generator provided inside the hydrogen case, which receives waste heat from the exhaust gas introduced into the hydrogen case to produce reformed hydrogen and is connected to the hydrogen supply path; a steam case into which the exhaust gas is introduced from the hydrogen case; a steam generator provided inside the steam case, which receives gas fuel and water from the outside and receives waste heat from the exhaust gas introduced into the steam case to produce steam; and a connecting pipe connecting the steam generator and the hydrogen generator to allow the steam produced in the steam generator to flow into the hydrogen generator.

[0012] Additionally, the hydrogen reformer further comprises: a connecting pipe connecting the steam generator and the hydrogen generator and flowing the steam generated in the steam generator to the hydrogen generator; a second injection nozzle provided in the connecting pipe and receiving gas fuel and water from the outside; a drain passage provided in the connecting pipe and flowing water stored in the connecting pipe; and a bypass passage provided in the drain passage and supplying the water flowing through the drain passage to the second injection nozzle. Effects of the invention

[0013] According to a reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium according to one embodiment of the present invention, reformed hydrogen is generated by utilizing the waste heat from the exhaust gas discharged from the crematorium during pet cremation, and the generated reformed hydrogen can be used as fuel in the crematorium. Brief explanation of the drawing

[0014] FIG. 1 is an overall schematic diagram of a reformed hydrogen system through the recovery of waste heat from a pet crematorium exhaust gas according to one embodiment of the present invention. FIG. 2 is a partial schematic diagram of a reformed hydrogen system through the recovery of waste heat from a pet crematorium exhaust gas according to one embodiment of the present invention. FIG. 3 is a schematic diagram of a pet crematorium according to one embodiment of the present invention. FIG. 4 is a schematic diagram of a hydrogen reformer (20) according to one embodiment of the present invention. FIG. 5 is a diagram showing the flow path of exhaust gas in a hydrogen reformer (20) according to one embodiment of the present invention. Figure 6 is a diagram showing the flow paths of gas fuel, steam, and reformed hydrogen in a hydrogen reformer (20). Specific details for implementing the invention

[0015] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0016] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components.

[0017] Hereinafter, a reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

[0018] FIG. 1 is an overall schematic diagram of a reformed hydrogen system through the recovery of waste heat from a pet crematorium exhaust gas according to one embodiment of the present invention.

[0019] FIG. 2 is a partial schematic diagram of a reformed hydrogen system through the recovery of waste heat from a pet crematorium exhaust gas according to one embodiment of the present invention.

[0020] FIG. 3 is a schematic diagram of a pet crematorium according to one embodiment of the present invention.

[0021] FIG. 4 is a schematic diagram of a hydrogen reformer (20) according to one embodiment of the present invention.

[0022] FIG. 5 is a diagram showing the flow path of exhaust gas in a hydrogen reformer (20) according to one embodiment of the present invention.

[0023] Figure 6 is a diagram showing the flow paths of gas fuel, steam, and reformed hydrogen in a hydrogen reformer (20).

[0024] Referring to FIGS. 1 to 5, a reformed hydrogen system through the recovery of waste heat from exhaust gas of a pet crematorium according to one embodiment of the present invention comprises: a crematorium (10) for cremating a pet carcass; an exhaust gas outlet (19) connected to the crematorium (10) for discharging high-temperature exhaust gas generated during the cremation of the pet carcass; a hydrogen reformer (20) connected to the exhaust gas outlet (19) for heat-exchanging waste heat contained in the exhaust gas to generate reformed hydrogen; and a hydrogen supply channel (30) connected to the hydrogen reformer (20) for flowing the reformed hydrogen to the crematorium (10).

[0025] The crematorium (10) cremates the remains of pets. The crematorium (10) can cremate the remains of pets using gas fuel (LPG or LNG). Additionally, as described below, it can receive reformed hydrogen from a hydrogen reformer (20) and burn the reformed hydrogen alone, or burn a mixture of reformed hydrogen and gas fuel (co-firing). The crematorium (10) discharges the exhaust gas generated during the cremation of the remains of pets to the outside.

[0026] The exhaust gas outlet (19) is connected to the crematorium (10). The exhaust gas outlet (19) discharges high-temperature exhaust gas generated during the cremation of a pet carcass.

[0027] Exhaust gas may contain not only fine dust, but also acidic gases such as hydrogen chloride (HCl), sulfur oxides (SO2), and hydrogen fluoride (HF), as well as various harmful pollutants such as heavy metals like Pb, Hg, and Cd, nitrogen oxides (NOx), dioxins, and furans.

[0028] The hydrogen reformer (20) is connected to the exhaust gas outlet (19). The hydrogen reformer (20) recovers waste heat contained in the exhaust gas and performs heat exchange. The hydrogen reformer (20) can generate reformed hydrogen by receiving waste heat from the exhaust gas. In this case, the hydrogen reformer (20) can generate reformed hydrogen from gas fuel and water supplied from the outside.

[0029] The hydrogen supply channel (30) is connected to the hydrogen reformer (20). The hydrogen supply channel (30) receives reformed hydrogen from the hydrogen reformer (20) and flows it to the incinerator (10).

[0030] The crematorium (10) can receive reformed hydrogen to cremate the remains of pets. In this case, the crematorium (10) can burn (co-fire) the reformed hydrogen supplied from the hydrogen supply path (30) alone or mixed with gas fuel.

[0031] Accordingly, the waste heat from the exhaust gas generated during pet cremation is recovered in a hydrogen reformer (20) to produce reformed hydrogen, which can then be used during pet cremation. Thus, the waste heat contained in the exhaust gas can be effectively recovered and reused.

[0032] In addition, the reformed hydrogen generated in the hydrogen reformer (20) can be mixed and combusted in the incineration furnace (10) in various ways according to the embodiment to optimize the efficiency of the incineration furnace (10).

[0033] Referring hereto to FIG. 3, according to one embodiment of the present invention, the crematorium (10) comprises: a housing (11) that forms an exterior and has an exhaust gas outlet (19) connected to its upper portion; a crematorium pedestal (12) provided inside the housing (11) for introducing the pet carcass into the housing (11); a first burner (13) provided inside the housing (11) and connected to a hydrogen supply channel (30) to spray a flame onto the crematorium pedestal (12) to cremate the pet carcass; a second burner (14) provided in the housing (11) and located above the first burner (13), which burns the exhaust gas generated after the cremation of the pet carcass and is connected to the hydrogen supply channel (30); and a first hydrogen nozzle (13a) provided in the housing (11), connected to the hydrogen supply channel (30), and located adjacent to the first burner (13). It includes: a second hydrogen nozzle (13b) provided in the housing (11), connected to the hydrogen supply channel (30), and provided adjacent to the second burner (14); an inclined plate (17) provided on the upper part of the dressing table (12) through which the exhaust gas rises; a horizontal plate (16) provided on the upper part of the inclined plate (17) and arranged in the housing (11) intersecting with the inclined plate (17); and a cleaning nozzle (18) provided on the lower part of the horizontal plate (16) to spray a cleaning fluid in the direction of the inclined plate (17).

[0034] The housing (11) forms the exterior. A cavity is formed inside the housing (11). The housing (11) is provided with a door (11a) at the front so that the housing (11) can be opened or closed. An exhaust gas outlet (19) is connected to the upper part of the housing (11). Exhaust gas generated during the cremation of a pet carcass flows through the exhaust gas outlet (19).

[0035] The cremation pedestal (12) is provided inside the housing (11). The cremation pedestal (12) is used to place the remains of a pet, which are then moved into or out of the housing (11).

[0036] The first burner (13) is provided inside the housing (11) and is provided at the bottom of the housing (11).

[0037] Gas fuel is supplied from the outside to the first burner (13) to burn the gas fuel. The first burner (13) sprays a flame onto the cremation cart (12) to cremate the pet carcass located on the cremation cart (12).

[0038] The first burner (13) can be connected to a hydrogen supply path (30). In this case, reformed hydrogen can be supplied to the first burner (13). At this time, the first burner (13) can be implemented as a mixed burner that burns reformed hydrogen alone or burns it mixed with gaseous fuel.

[0039] The second burner (14) is provided inside the housing (11), is provided on the upper part of the housing (11), and is provided on the upper part of the first burner (13).

[0040] Gas fuel is supplied from the outside to the second burner (14) to burn the gas fuel. The second burner (14) burns the exhaust gas generated after the cremation of the pet carcass. In this case, the second burner (14) can heat the exhaust gas up to 850°C. Accordingly, air pollutants contained in the exhaust gas can be burned.

[0041] The second burner (14) can be connected to a hydrogen supply path (30). In this case, reformed hydrogen can be supplied to the second burner (14). At this time, the second burner (14) can be implemented as a mixed burner that burns reformed hydrogen alone or burns it mixed with gaseous fuel.

[0042] The first hydrogen nozzle (13a) is provided in the housing (11) and connected to the hydrogen supply path (30). The first hydrogen nozzle (13a) is provided adjacent to the first burner (13).

[0043] The first hydrogen nozzle (13a) can receive and spray reformed hydrogen. In this case, the reformed hydrogen sprayed from the first hydrogen nozzle (13a) can be burned by the flame of the adjacent first burner (13). Accordingly, the exhaust gas is burned, and the air pollutants contained in the exhaust gas can be burned.

[0044] The second hydrogen nozzle (13b) is provided in the housing (11) and connected to the hydrogen supply path (30). The second hydrogen nozzle (13b) is provided adjacent to the second burner (14).

[0045] The second hydrogen nozzle (13b) can receive and inject reformed hydrogen. In this case, the reformed hydrogen injected from the second hydrogen nozzle (13b) can be burned by the flame of the adjacent second burner (14). Accordingly, the exhaust gas is burned, and the air pollutants contained in the exhaust gas can be burned.

[0046] An inclined plate (17) is provided on the upper part of the cremation trolley (12). Exhaust gas generated during the cremation of a pet carcass flows through the inclined plate (17). The exhaust gas rises through the inclined plate (17).

[0047] A horizontal plate (16) is provided on the upper part of an inclined plate (17). The horizontal plate (16) is positioned in the housing (11) alternately with the inclined plate (17) to form a flow path through which exhaust gas flows. In this case, the exhaust gas rises along the flow path formed by the inclined plate (17) and the horizontal plate (16).

[0048] A cleaning nozzle (18) is provided at the bottom of a horizontal plate (16). The cleaning nozzle (18) sprays a cleaning fluid in the direction of an inclined plate (17). Here, the cleaning fluid may be water, urea solution, etc., but the embodiments are not limited thereto.

[0049] A urea solution injection nozzle (15) is provided on the upper part of the housing (11). The urea solution injection nozzle (15) injects urea solution that reduces air pollutants contained in the exhaust gas.

[0050] Referring hereto to FIG. 2, according to one embodiment of the present invention, the hydrogen supply path (30) comprises: a main path (31) connected to the hydrogen reformer (20) to supply the reformed hydrogen from the hydrogen reformer (20); a first burner path (32) connected to the main path (31) to allow the reformed hydrogen to flow and equipped with a first valve (35); a second burner path (33) connected to the main path (31) to allow the reformed hydrogen to flow and equipped with a second valve (36); and a first hydrogen nozzle path (34a) connected to the main path to allow the reformed hydrogen to flow and equipped with a first hydrogen valve (37). and a second hydrogen nozzle flow path (34b) in which the second hydrogen nozzle (13b) is connected to the main flow path, the reformed hydrogen flows, and a second hydrogen valve (38) is provided.

[0051] The main flow path (31) is connected to the hydrogen reformer (20). Reformed hydrogen generated from the hydrogen reformer (20) is supplied to the main flow path (31).

[0052] The first burner path (32) is connected to the main path (31). The first burner path (32) connects the first burner (13) to the main path (31). Reformed hydrogen flows through the first burner path (32). Accordingly, reformed hydrogen is supplied to the first burner (13).

[0053] A first valve (35) is provided in the first burner passage (32). The first valve (35) is operated as an on-off valve to open and close the first burner passage (32). When reformed hydrogen is supplied to the first burner (13), the first valve (35) is turned on, and the first burner passage (32) is opened. When reformed hydrogen is not supplied to the first burner (13), the first valve (35) is turned off, and the first burner passage (32) is closed.

[0054] The second burner path (33) is connected to the main path (31). The second burner path (33) connects the second burner (14) to the main path (31). Reformed hydrogen flows through the second burner path (33). Accordingly, reformed hydrogen is supplied to the second burner (14).

[0055] A second valve (36) is provided in the second burner passage (33). The second valve (36) is operated as an on-off valve to open and close the second burner passage (33). When reformed hydrogen is supplied to the second burner (14), the second valve (36) is turned on, opening the second burner passage (33). When reformed hydrogen is not supplied to the second burner (14), the second valve (36) is turned off, closing the second burner passage (33).

[0056] The first hydrogen nozzle passage (34a) is connected to the main passage (31). The first hydrogen nozzle passage (34a) connects the first hydrogen nozzle (13a) to the main passage (31). Reformed hydrogen flows through the first hydrogen nozzle passage (34a). Accordingly, reformed hydrogen is supplied to the first hydrogen nozzle (13a).

[0057] A first hydrogen valve (37) is provided in the first hydrogen nozzle passage (34a). The first hydrogen valve (37) is operated as an on / off valve to open and close the first hydrogen nozzle passage (34a).

[0058] The second hydrogen nozzle passage (34b) is connected to the main passage (31). The second hydrogen nozzle passage (34b) connects the second hydrogen nozzle (13b) to the main passage (31). Reformed hydrogen flows through the second hydrogen nozzle passage (34b). Accordingly, reformed hydrogen is supplied to the second hydrogen nozzle (13b).

[0059] A second hydrogen valve (38) is provided in the second hydrogen nozzle passage (34b). The second hydrogen valve (38) is operated as an on / off valve to open and close the second hydrogen nozzle passage (34b).

[0060] The first valve (35) and the second valve (36) can be selectively turned on and off at least one of them. For example, the first valve (35) can be turned on and the second valve (36) can be turned off. Additionally, the first valve (35) can be turned off and the second valve (36) can be turned on. Also, the first valve (35) and the second valve (36) can be turned on or off simultaneously.

[0061] When the first valve (35) is turned on, reformed hydrogen is supplied to the first burner (13). When the second valve (36) is turned on, reformed hydrogen is supplied to the second burner (14).

[0062] At this time, the first burner (13) or the second burner (14) can burn the reformed hydrogen alone or burn it mixed with gas fuel supplied from the outside (mixed combustion).

[0063] When the first valve (35) is turned on and the second valve (36) is turned off, the first burner (13) burns the reformed hydrogen, and the second valve (36) burns the gas fuel.

[0064] When the second valve (36) is turned on and the first valve (35) is turned off, the second burner (14) burns the reformed hydrogen, and the first valve (35) burns the gas fuel.

[0065] When the first valve (35) and the second valve (36) are turned on, the first burner (13) and the second burner (14) burn the reformed hydrogen together.

[0066] When the first valve (35) and the second valve (36) are turned off, the first burner (13) and the second burner (14) burn gas fuel.

[0067] Meanwhile, the first hydrogen valve (37) or the second hydrogen valve (38) may be optionally operated on or off. For example, the first hydrogen valve (37) may be operated on and the second hydrogen valve (38) may be operated off. Additionally, the first hydrogen valve (37) may be operated off and the second hydrogen valve (38) may be operated on. Furthermore, the first hydrogen valve (37) and the second hydrogen valve (38) may be operated on or off simultaneously.

[0068] When the first hydrogen valve (37) is turned on, reformed hydrogen is supplied to the first hydrogen nozzle (13a). When the second hydrogen valve (38) is turned on, reformed hydrogen is supplied to the second hydrogen nozzle (13b).

[0069] At this time, when the first burner (13) or the second burner (14) is operated, the reformed hydrogen supplied to the first hydrogen nozzle (13a) or the second hydrogen nozzle (13b) is burned together with the operated first burner (13) or second burner (14).

[0070] Accordingly, the reformed hydrogen generated in the hydrogen reformer (20) can be burned alone or mixed in various ways according to the embodiment to optimize the efficiency of the incineration furnace (10).

[0071] Referring hereto to FIGS. 4 to 6, a hydrogen reformer (20) according to one embodiment of the present invention comprises: a hydrogen case (23) connected to the exhaust gas outlet (19) to receive the exhaust gas; a hydrogen generator (24) provided inside the hydrogen case (23), which receives waste heat from the exhaust gas introduced into the hydrogen case (23) to produce reformed hydrogen, and which is connected to the hydrogen supply path (30); a steam case (21) into which the exhaust gas from the hydrogen case (23) is introduced; a steam generator (22) provided inside the steam case (21), which receives hydrocarbons and water from the outside, receives waste heat from the exhaust gas introduced into the steam case (21) to produce steam; and a connecting pipe (25) connecting the steam generator (22) and the hydrogen generator (24) to allow the steam produced in the steam generator (22) to flow to the hydrogen generator (24).

[0072] The hydrogen case (23) is connected to the exhaust gas outlet (19). Exhaust gas is introduced into the hydrogen case (23). The hydrogen case (23) is formed in a cylindrical shape. On the outer surface of the hydrogen case (23), an exhaust gas inlet (231) is provided, which is connected to the exhaust gas outlet (19) and through which exhaust gas is introduced. In this case, the temperature of the exhaust gas can be formed at 850°C.

[0073] A hydrogen generator (24) is provided inside a hydrogen case (23). The hydrogen generator (24) is separated from the hydrogen case (23) by space. In this case, the exhaust gas flowing into the hydrogen case (23) is not in contact with the gas fuel and water vapor flowing into the hydrogen generator (24), and heat is exchanged without mixing.

[0074] The hydrogen generator (24) receives waste heat from the exhaust gas introduced into the hydrogen case (23). The hydrogen generator (24) uses the received waste heat to produce reformed hydrogen.

[0075] The hydrogen generator (24) may utilize a known hydrogen generation mechanism. For example, high-temperature steam generated in the steam generator (22) and gaseous fuel (LPG or LNG) may react with a nickel catalyst to produce carbon monoxide and hydrogen. Additionally, carbon monoxide and steam may produce carbon dioxide and hydrogen with the catalyst. In this way, the hydrogen generator (24) can recover waste heat from the exhaust gas to produce reformed hydrogen.

[0076] The hydrogen generator (24) is connected to the hydrogen supply channel (30). In this case, the reformed hydrogen produced in the hydrogen generator (24) is supplied to the hydrogen supply channel (30).

[0077] A hydrogen discharge valve (28) may be provided at the downstream end of the hydrogen generator (24). The hydrogen discharge valve (28) is connected to a hydrogen supply path (30). The hydrogen discharge valve (28) supplies reformed hydrogen to the hydrogen supply path (30). The hydrogen discharge valve (28) may be connected to a main path (31).

[0078] Exhaust gas heat-exchanged in the hydrogen generator (24) flows into the steam case (21). The hydrogen case (23) is connected to the steam case (21). In this case, the hydrogen case (23) is connected to the steam case (21) by a bridge (29) in which a hollow is formed. Exhaust gas heat-exchanged with the hydrogen generator (24) flows through the bridge (29). Exhaust gas heat-exchanged in the hydrogen generator (24) flows into the steam case (21) through the bridge (29).

[0079] The steam case (21) is connected to the hydrogen case (23). The steam case (21) is formed in a cylindrical shape. The steam case (21) is provided with an exhaust gas outlet (211) through which heat-exchanged exhaust gas is discharged. Exhaust gas is introduced into the steam case (21) from the hydrogen case (23) through a bridge (29). In this case, the exhaust gas is introduced into the steam case after being heat-exchanged in the hydrogen generator (24).

[0080] The steam generator (22) is provided inside the steam case (21). The steam generator (22) can receive gas fuel and water from the outside as shown in FIG. 6. In this case, the water supplied to the steam generator (22) can be sprayed inside the steam generator (22) and atomized into a mist state.

[0081] At this time, a first spray nozzle (26) is provided at the front end of the steam generator (22). The first spray nozzle (26) can spray water supplied from the outside in a mist state.

[0082] The steam generator (22) is separated from the steam case (21). In this case, the exhaust gas flowing into the steam case (21) does not come into contact with the gas fuel and water flowing into the steam generator (22), and heat is exchanged without mixing.

[0083] The steam generator (22) receives waste heat from the exhaust gas introduced into the steam case (21). The steam generator (22) receives the remaining waste heat from the exhaust gas introduced from the hydrogen case (24), heats the water in a mist state, and preheats the gas fuel. Accordingly, the steam generator (22) can additionally recover waste heat from the exhaust gas to generate steam and preheat the gas fuel, thereby improving thermal efficiency.

[0084] The exhaust gas can be cooled to 230°C or lower by transferring waste heat from the steam generator (22). The exhaust gas discharged through the exhaust gas outlet (211) can be connected to a known air pollution reduction device to remove pollutants and cooled and discharged to the outside.

[0085] A connecting pipe (25) is provided at the bottom of the steam case (21) and the hydrogen case (23). The connecting pipe (25) connects the steam generator (22) and the hydrogen generator (24) to allow water vapor generated in the steam generator (22) to flow into the hydrogen generator (24).

[0086] The connecting pipe (25) may be equipped with a second injection nozzle (27) that receives gas fuel and water from the outside. The second injection nozzle (27) is provided between the rear end of the steam generator (22) and the front end of the hydrogen generator (24). The second injection nozzle (27) can spray water supplied from the outside in a mist state.

[0087] A check valve (253) may be provided in the connecting pipe (25). The check valve (253) prevents gas fuel and water flowing through the connecting pipe (25) from flowing back into the steam generator.

[0088] Referring to FIG. 5, the exhaust gas flows along the direction of the arrow. The exhaust gas enters the hydrogen case (23) through the exhaust gas inlet (231) and exchanges heat with the hydrogen generator (24) in the hydrogen case (23).

[0089] Afterwards, the exhaust gas flows into the steam case (21) through the bridge (29), and after heat exchange with the steam generator (22), it flows out through the exhaust gas outlet (211).

[0090] Meanwhile, the connecting pipe (25) may be provided with a drain passage (251). The drain passage (251) may be provided between the front end of the hydrogen generator (24) and the second injection nozzle (27). The drain passage (251) allows water stored in the connecting pipe (25) to flow.

[0091] The drain channel (251) can be connected to the second spray nozzle (27) via a bypass channel (252). Water flowing through the drain channel (251) can be supplied back to the second spray nozzle (27) through the bypass channel (252). The second spray nozzle (27) can spray the water supplied through the bypass channel (252) in a mist state.

[0092] Accordingly, the water stored in the connecting pipe (25) is supplied back to the second injection nozzle (27) through the bypass path (252), thereby improving the water circulation efficiency and thus improving the efficiency of the hydrogen reformer (20).

[0093] For the time being, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

[0094] The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0095] 10 : Incineration furnace 20 : Hydrogen reformer 30 : Hydrogen supply route D : Pet carcass

Claims

Claim 1 A crematorium for cremating a pet's remains; an exhaust gas outlet connected to the crematorium and discharging high-temperature exhaust gas generated during the cremation of the pet's remains; a hydrogen reformer connected to the exhaust gas outlet and generating reformed hydrogen by heat exchange with waste heat contained in the exhaust gas; and a hydrogen supply channel connected to the hydrogen reformer and flowing the reformed hydrogen into the crematorium; wherein the crematorium comprises: a housing forming an exterior and having the exhaust gas outlet connected to the upper part; a cremation trolley provided inside the housing for introducing the pet's remains into the housing; a first burner provided inside the housing, which sprays a flame to the cremation trolley to cremate the pet's remains and is connected to the hydrogen supply channel; a second burner provided in the housing and above the first burner, which burns the exhaust gas generated after the cremation of the pet's remains and is connected to the hydrogen supply channel; and a first hydrogen nozzle provided in the housing, connected to the hydrogen supply channel, and provided adjacent to the first burner. A reformed hydrogen system through the recovery of waste heat from pet crematorium exhaust gas, comprising: a second hydrogen nozzle provided in the housing, connected to the hydrogen supply path, and provided adjacent to the second burner; an inclined plate provided on the upper part of the crematorium pedestal through which the exhaust gas rises; a horizontal plate provided on the upper part of the inclined plate and arranged in the housing intersecting with the inclined plate; and a cleaning nozzle provided on the lower part of the horizontal plate to spray a cleaning fluid in the direction of the inclined plate. Claim 2 delete Claim 3 In claim 1, the hydrogen supply path comprises: a main path connected to the hydrogen reformer to supply the reformed hydrogen from the hydrogen reformer; a first burner path connected to the main path, through which the reformed hydrogen flows, and which is equipped with a first valve; a second burner path connected to the main path, through which the reformed hydrogen flows, and which is equipped with a second valve; a first hydrogen nozzle path connected to the main path, through which the reformed hydrogen flows, and which is equipped with a first hydrogen valve; and a second hydrogen nozzle path connected to the main path, through which the reformed hydrogen flows, and which is equipped with a second hydrogen valve. Claim 4 In claim 1, the hydrogen reformer comprises: a hydrogen case connected to the exhaust gas outlet to receive the exhaust gas; a hydrogen generator provided inside the hydrogen case, which receives waste heat from the exhaust gas introduced into the hydrogen case to generate reformed hydrogen and is connected to the hydrogen supply path; a steam case into which the exhaust gas introduced from the hydrogen case is received; a steam generator provided inside the steam case, which receives gas fuel and water from the outside and receives waste heat from the exhaust gas introduced into the steam case to generate steam; and a connecting pipe connecting the steam generator and the hydrogen generator to allow the steam generated in the steam generator to flow into the hydrogen generator. Claim 5 In claim 4, the hydrogen reformer further comprises: a connecting pipe connecting the steam generator and the hydrogen generator and flowing the steam generated in the steam generator to the hydrogen generator; a second injection nozzle provided in the connecting pipe and receiving gas fuel and water from the outside; a drain passage provided in the connecting pipe and flowing water stored in the connecting pipe; and a bypass passage provided in the drain passage and supplying the water flowing through the drain passage to the second injection nozzle; a system for reforming hydrogen through the recovery of waste heat from pet crematorium exhaust gas.

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