WO2024237390A1 - Highly efficient fuel processing apparatus - Google Patents

Abstract

Provided is a highly efficient and durable fuel processing apparatus that subjects hydrocarbon-based raw gas or natural gas having methane (CH4) as the main component to a steam-reforming reaction and then supplies hydrogen to a fuel cell stack, the apparatus allowing stable production of hydrogen and removal of carbon monoxide by means of optimized heat-exchange in heat-exchangers associated with internal reactors when starting, operating, and stopping the fuel processing apparatus.

Description

High-efficiency fuel treatment unit

The present invention relates to a high-efficiency fuel processing device, and more specifically, to a _high -efficiency fuel processing device which supplies hydrogen to a fuel cell stack through a steam reforming reaction of a hydrocarbon-based raw material gas or natural gas having methane (CH 4 ) as a main component, and enables stable hydrogen production by utilizing optimized heat exchange between heat exchangers connected to internal reactors during startup, operation, and stop of the fuel processing device, and which also has durability to remove carbon monoxide.

Recently, work is being actively carried out both domestically and internationally to develop and commercialize fuel cell systems that enable high-efficiency power generation as power generation systems for distributed energy sources.

Currently, hydrogen supplied to fuel cell systems does not have a supply pipeline infrastructure like city gas, so in order to operate the fuel cell system, a hydrogen trailer is installed to continuously supply hydrogen, or a steam reforming method is used to produce hydrogen using city gas with methane as its main component for which existing infrastructure has been built.

In order to reduce the concentration of carbon monoxide generated in the hydrogen-containing gas through this steam reforming reaction, a CO transformation reactor is configured, and in order to completely remove carbon monoxide, a selective oxidation reactor is configured to remove carbon monoxide in the reformed gas (less than 10 ppm), and by supplying reformed gas with a high hydrogen composition (more than 74%) to the fuel cell stack, electricity and heat are produced in the fuel cell.

The catalyst used in the steam reforming reaction uses Ru or Ni in the operating temperature range of 600 to 700°C, the CO transformation reactor catalyst uses Cu-Zn in the operating temperature range of 200 to 300°C, and the selective oxidation reactor catalyst is designed to use an oxidation catalyst containing Ru in the operating temperature range of 90 to 150°C.

In particular, if the temperature of the selective oxidation reactor catalyst is too low, the reaction does not occur and carbon monoxide is not removed. On the other hand, if the temperature is too high, the catalyst deteriorates quickly, making it difficult to secure the life of the fuel processing unit, and the methanation reaction occurs, making it difficult to increase the hydrogen composition in the reformed gas produced.

That is, if even a small amount (≥50 ppm) of carbon monoxide (CO) is supplied to the fuel cell stack for a long period of time, there is a problem that CO poisoning occurs in the fuel cell catalyst, resulting in catalyst deterioration and deterioration of fuel cell performance.

Patent documents 1 to 3 are known as prior art techniques developed to solve the above problems.

However, according to Patent Document 1 (Korean Patent Publication No. 10-2010-0065564), a chamber is formed to recover and preheat the heat discharged to the outside by circulating the reactants in the upper part of the combustion chamber and the raw material and steam supplied to the steam reforming reactor, and the raw material-steam preheated in this chamber is supplied to the steam reforming reactor, but there is a problem that a long start-up time is required to achieve heat balance of the reactors when the fuel treatment devices of the CO transformation reactor and the selective oxidation reactor are started.

In addition, according to Patent Document 2 (Korean Patent Publication No. 10-2012-0084062), the steam reforming reactor and the raw material-steam are structured to directly exchange heat, and the outlet temperature of the steam reforming reactor is high at 650 to 700°C. If the water (steam) that has exchanged heat with the CO transformation unit directly exchanges heat with the steam reforming reactor, there is a problem that the temperature of the steam reforming reactor is lowered and a large amount of heat is supplied to raise the temperature.

And, according to patent document 3 (Korean Patent Publication No. 10-2018-0078522), it comprises a fuel reforming unit arranged at the center of a fuel processing device, a heating unit arranged at the upper side of the device body to heat the fuel reforming unit, a CO transformation reaction unit connected to the fuel reforming unit and arranged at the lower side of the device body, and a PROX reaction unit connected to the CO transformation reaction unit and arranged at the upper side of the device body. However, there are problems in that the durability of the reforming catalyst cannot be guaranteed with a heat dissipation plate, the temperature rise time of the CO transformation reaction unit is long when the fuel processing device is started, and efficient cooling cannot be performed during operation.

The present invention is to solve the problems revealed in the above-mentioned prior art, and one of the several objects of the present invention is to provide a highly efficient fuel processing device which supplies hydrogen to a fuel cell stack through a steam reforming reaction of a hydrocarbon-based raw material gas or natural gas having methane (CH ₄ ) as a main component, while enabling stable hydrogen production by utilizing optimized heat exchange between heat exchangers connected to internal reactors during startup, operation, and stop of the fuel processing device, and which has durability to remove carbon monoxide.

In addition, the present invention provides a high-efficiency fuel processing device capable of increasing the catalytic reaction efficiency of each reactor through a fast startup time and stable temperature maintenance during operation, through an optimized configuration suited to the reaction heat of each reactor in the fuel processing device and fluid heat exchangers according to the operating temperature of each reactor.

In addition, the purpose is to provide a durable, high-efficiency fuel processing device that enables stable hydrogen production and carbon monoxide removal through optimization of heat exchange that enables integration and miniaturization of the fuel processing device by configuring balanced structures that can withstand thermal stress that occurs during operation and stop.

According to one aspect, a burner combustion chamber having a burner provided at the top and receiving fuel gas and burner air from the outside to combust the fuel gas; a reforming reaction unit provided on the outside of the burner combustion chamber to convert a hydrocarbon-based raw material gas into a reforming gas; an insulating material provided on the outside of the reforming reaction unit; a first passage provided on the outside of the insulating material to provide a discharge path for burner combustion gas exhausted from the burner combustion chamber; a second passage provided on the outside of the first passage to provide a discharge path for reforming gas exhausted from the reforming reaction unit; a first heat exchange unit provided between the first and second passages to vaporize water supplied from the outside with the heat amount of the burner combustion gas and the reforming gas; a second heat exchange unit provided between the first passage and the insulating material to preheat the temperature of the vaporized water supplied from the first heat exchange unit and the hydrocarbon-based raw material gas supplied from the outside with the heat amount of the burner combustion gas; A high-efficiency fuel processing device is provided, including: a CO transformation reactor provided at a lower portion of the second passage so as to communicate with the second passage and remove CO from the reformed gas; a third heat exchanger provided between the first passage and the CO transformation reactor and providing a path for burner air supplied to the burner combustion chamber to cool the CO transformation reactor; a selective oxidation reactor provided on an outer side of the second passage and further removing CO from the reformed gas from which CO exhausted from the CO transformation reactor has been removed; and a fourth heat exchanger provided between the second passage and the selective oxidation reactor and providing a path for water supplied to the first heat exchanger to cool the selective oxidation reactor.

In one embodiment, a plurality of exhaust holes are provided at equal intervals on the lower side wall of the burner combustion chamber so that the burner combustion gas can be exhausted radially.

In one embodiment, the invention may further include a heater provided on the outside of the CO transformation reactor and the selective oxidation reactor.

In one embodiment, the third heat exchanger is installed in a coil shape on the side wall of the first heat exchanger so that the burner air therein can have a spiral movement path.

According to a high-efficiency fuel processing device according to one aspect of the present invention, a burner combustion gas movement passage capable of heat exchange from the bottom to the top of the fuel processing device is provided, wherein the temperature of the supplied hydrocarbon raw material gas and steam can be increased through a first heat exchanger that vaporizes water supplied to the fuel processing device using the heat of the burner combustion gas and reformed gas, and a second heat exchanger that preheats the temperature of the steam (water) and hydrocarbon raw material gas using the heat of the burner combustion gas.

In addition, according to a durable, high-efficiency fuel processing device that enables stable hydrogen production and carbon monoxide removal through optimization of the heat exchange of the present invention, a third heat exchanger that cools the CO transformation reactor with burner air during operation of the fuel processing device, and a fourth heat exchanger that cools the selective oxidation reactor by forming a water transfer passage inside the selective oxidation reactor formed on the outer wall of the reformed gas passageway, thereby providing a durable, high-efficiency fuel processing device capable of integration of the fuel processing device.

It should be understood that the effects of one aspect of the present invention are not limited to the effects described above, but include all effects that can be inferred from the detailed description of the invention or the composition described in the claims of this specification.

Figure 1 is a configuration diagram of a high-efficiency fuel processing device according to one embodiment of the present invention.

Figure 2 is an enlarged view of portion A of Figure 1.

Figure 3 is a schematic diagram showing a third heat exchanger according to one embodiment of the present invention.

FIG. 4 is a drawing showing a water movement path in a high-efficiency fuel processing device according to one embodiment of the present invention.

FIG. 5 is a drawing showing the movement path of hydrocarbon raw material gas in a high-efficiency fuel processing device according to one embodiment of the present invention.

FIG. 6 is a drawing showing the movement path of reformed gas in a high-efficiency fuel processing device according to one embodiment of the present invention.

FIG. 7 is a drawing showing the movement path of burner air (burner combustion gas) in a high-efficiency fuel processing device according to one embodiment of the present invention.

The advantages and features of the present invention and the methods for achieving them will become apparent with reference to the embodiments described in detail below together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform a person having ordinary skill in the art to which the present invention belongs of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques are not specifically described to avoid obscuring the present invention.

The terminology used herein is for the purpose of describing embodiments only and is not intended to limit the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase.

As used herein, the terms “comprises” and “comprising” are intended to mean that they do not exclude the presence or addition of one or more other components, steps, operations and/or elements other than the components, steps, operations and/or elements mentioned.

And, "and/or" includes each and every combination of one or more of the items mentioned.

Additionally, the embodiments described herein will be described with reference to cross-sectional drawings and/or schematic drawings, which are ideal examples of the present invention.

Accordingly, the embodiments of the present invention are not limited to the specific forms illustrated, but also include changes in forms produced according to the manufacturing process.

In addition, each component in each drawing illustrated in the present invention may be illustrated somewhat enlarged or reduced for convenience of explanation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a configuration diagram of a high-efficiency fuel processing device according to one embodiment of the present invention, FIG. 2 is an enlarged view of portion A of FIG. 1, and FIG. 3 is a schematic diagram showing a third heat exchange unit according to one embodiment of the present invention.

First, in order to improve the durability of a high-efficiency fuel processing unit, it is necessary to sufficiently preheat the mixed gas containing steam and hydrocarbon-based raw material gas supplied to the reforming reactor, effectively cool the CO reforming reactor and the selective oxidation reactor due to the exothermic reaction, and ensure good heat balance between the reactors during startup, operation, and stop of the fuel processing unit.

A high-efficiency fuel processing device (100) according to one embodiment of the present invention may be implemented in an overall cylindrical shape, and may be made of a material having high heat resistance and rigidity that can withstand high heat and impact. In addition, a support plate having an approximately circular shape and a plurality of supports connected to the support plate and supporting the high-efficiency fuel processing device may be provided at the bottom of the high-efficiency fuel processing device (100) according to one embodiment of the present invention so that the high-efficiency fuel processing device (100) can be stably supported.

Referring to FIG. 1, a high-efficiency fuel processing device (100) according to one embodiment of the present invention has a cylindrical structure in which a burner combustion chamber (12), a reforming reaction unit (25), an insulator (61), a second heat exchange unit (23), and a first flow path (14) are sequentially formed from the center, and a second flow path (26), a fourth heat exchange unit (52), and a selective oxidation reactor (42) are sequentially formed outside the first flow path (14), and a third heat exchange unit (32) and a CO transformation reactor (27) are sequentially formed below the second flow path (26).

The burner combustion chamber (12) is provided in the center of a high-efficiency fuel processing device (100) and serves to continuously supply the heat source necessary to convert hydrocarbon raw material gas into hydrogen through a reforming reaction with water steam.

A burner (11) is installed at the top of the burner combustion chamber (12), and fuel gas and burner air are supplied through the gas supply port (13) and combusted. Here, the fuel gas may be at least one selected from the group consisting of hydrocarbon-based raw materials and fuel cell stack off-gas.

When fuel gas is supplied as a mixture of fuel cell stack off-gas and burner air, it is desirable to supply it to the burner (11) through a separate pipe to prevent backfire.

Meanwhile, a temperature sensor (not shown) is configured at the bottom of the burner combustion chamber (12) so that the ignition/combustion status of the burner can be checked from the outside, thereby monitoring the combustion chamber status.

A reforming reaction unit (25) that converts hydrocarbon-based raw material gas into reforming gas is provided on the outside of the burner combustion chamber (12).

The reforming reaction unit (25) is filled with a reforming catalyst, and the catalyst used therein is a Ru or Ni reforming catalyst, and converts hydrocarbon raw material gas into hydrogen through a reforming reaction with steam at an operating temperature of 600 to 700°C.

The chemical formula of this steam reforming reaction is as follows, and since the reaction in the reforming reaction section (25) is an endothermic reaction and the temperature of the reforming reaction section (25) decreases, heat must be continuously supplied from the burner combustion chamber (12).

The outer wall of the reforming reaction unit (25) is provided with an insulating material (61). The insulating material (61) prevents the high temperature heat of the reforming reaction unit (25) from being released to the outside and prevents heat exchange with other components of the high-efficiency fuel processing device (100).

A first passage (14) is provided on the outside of the insulation (61) to provide a discharge path for burner combustion gas exhausted from the burner combustion chamber (12).

Referring to FIG. 2, the burner combustion gas inside the burner combustion chamber (12) can be radially exhausted through a plurality of exhaust holes (12a) provided at equal intervals on the lower side of the burner combustion chamber (12) and can be introduced into the first passage (14) through a plurality of exhaust holes (14a) provided at equal intervals on the inner side of the lower side of the first passage (14). In this case, the burner combustion gas can be evenly distributed in the first passage (14) implemented in a cylindrical shape, so there is an advantage in that the heat exchange efficiency between the first passage (14) and other components described later can be maximized.

The burner combustion gas flowing through the first flow path (14) is discharged to the outside through the burner combustion gas discharge port (15) provided at the top of the high-efficiency fuel processing device (100).

A second passage (26) is provided on the outside of the first passage (14) to provide a discharge path for the reformed gas exhausted from the reforming reaction unit (25).

The reformed gas flowing through the second flow path (26) is supplied to a CO reforming reactor (27) provided at the lower portion of the second flow path (26) so as to be connected to the second flow path (26).

The CO transformation reactor (27) is filled with a Cu-Zn catalyst, and the operating temperature is in the range of 200°C to 300°C.

The high temperature reformed gas of 600 to 700°C discharged from the reforming reaction unit (25) flows through the first flow path (14) and is cooled to a temperature in the range of about 200°C and supplied to the CO transformation reactor (27).

The chemical formula of the CO transformation reaction that occurs in the CO transformation reactor (27) is as follows, and the carbon monoxide content of the reformed gas is reduced to approximately 0.1 to 0.5% while passing through the CO transformation reactor (27).

The reformed gas flowing through the CO reforming reactor (27) is discharged to the outside through the reformed gas discharge port (28) provided on one side of the CO reforming reactor (27).

A heater may be provided on the outer wall of the CO transformation reactor (27) for rapid temperature increase when the fuel processing device (100) is started, but is not limited thereto.

Between the first and second paths (14, 26), a first heat exchanger (22) is provided to vaporize water supplied from the outside with the heat of burner combustion gas and reformed gas, and between the first path (14) and the insulation (61), a second heat exchanger (23) is provided to preheat the temperature of the vaporized water supplied from the first heat exchanger (22) with the heat of burner combustion gas and the hydrocarbon-based raw material gas supplied from the outside.

When non-preheated hydrocarbon raw material and steam are mixed in the reforming reaction unit (25), the temperature of the steam may decrease, causing liquid water droplets to form. In this case, the ratio of steam and carbon may not be correct, thereby reducing the efficiency of the reforming reaction. However, in the fuel processing device (100) of the present invention, water supplied from the outside is vaporized through heat exchange between the first and second flow paths (14, 26) and the first heat exchange unit (22), and the hydrocarbon raw material and steam are preheated through heat exchange between the first flow path (14) and the second heat exchange unit (23), thereby maximizing the efficiency of the reforming reaction. In addition, in the fuel processing device (100) of the present invention, the temperature of the reformed gas having a temperature range of 600°C to 700°C is cooled to about 200°C through heat exchange between the first heat exchange unit (22) and the second flow path (26) and supplied to the CO transformation reactor (27) described above, thereby maximizing the efficiency of the CO transformation reaction.

Between the first filament (14) and the CO transformation reactor (27), a third heat exchanger (32) is provided to provide a path for the burner air supplied to the aforementioned burner combustion chamber (12) to cool the CO transformation reactor (27).

Since the CO transformation reaction that occurs in the CO transformation reactor (27) is an exothermic reaction, a separate cooling device such as an air-cooling fan is usually provided in the CO transformation reactor. However, in the fuel processing device (100) of the present invention, the CO transformation reactor (27) can be effectively cooled without a separate cooling device through heat exchange between the CO transformation reactor (27) and the third heat exchange unit (32), and as a result, the fuel processing device can be miniaturized. In addition, by preheating the burner air supplied to the burner combustion chamber (12), the fuel gas combustion efficiency by the burner (11) can be maximized.

Referring to Fig. 3, the third heat exchanger (32) may be installed in a coil shape on the side wall of the first flow path (14) so that the burner air inside it may have a spiral movement path. In this case, the time that the burner air remains inside the third heat exchanger (32) may be increased, so that heat exchange between the CO transformation reactor (27) and the third heat exchanger (32) may occur more effectively.

On the outside of the second duct (26), a selective oxidation reactor (42) is provided to additionally remove CO from the reformed gas from which CO has been removed and exhausted from the CO reforming reactor (27).

The chemical formula of the CO removal reaction that occurs in the selective oxidation reactor (42) is as follows, and the carbon monoxide content of the reformed gas is reduced to about 10 ppm or less while passing through the selective oxidation reactor (42).

Between the second heat exchanger (26) and the selective oxidation reactor (42), a fourth heat exchanger (52) is provided to provide a path for the water supplied to the first heat exchanger (22) described above to cool the selective oxidation reactor (42).

Since the CO removal reaction that occurs in the selective oxidation reactor (42) is an exothermic reaction, a separate cooling device such as an air-cooling fan is usually provided in the selective oxidation reactor. However, in the fuel processing device (100) of the present invention, the selective oxidation reactor (42) can be effectively cooled without a separate cooling device through heat exchange between the selective oxidation reactor (42) and the fourth heat exchange unit (52), and as a result, the fuel processing device can be miniaturized. In addition, by preheating the water supplied to the first heat exchange unit (22), the vaporization of water that occurs in the first heat exchange unit (22) can be facilitated.

FIG. 4 is a drawing showing a water movement path in a high-efficiency fuel processing device according to one embodiment of the present invention.

Referring to FIG. 4, water is supplied to the fourth heat exchanger (52) through the cooling water supply port (51), and water whose temperature has increased through heat exchange with the selective oxidation reactor (42) is discharged to the outside through the cooling water discharge port (53). In addition, water discharged through the cooling water discharge port (53) is supplied to the first heat exchanger (22) through the water supply port (21), and is vaporized through heat exchange with the first and second flow paths (14, 26). In addition, the vaporized water is supplied to the second heat exchanger (23), and is preheated through heat exchange with the first flow path (14).

FIG. 5 is a drawing showing the movement path of hydrocarbon raw material gas in a high-efficiency fuel processing device according to one embodiment of the present invention.

The hydrocarbon raw material gas is supplied to the second heat exchanger (23) through the hydrocarbon raw material gas supply port (24) provided at the top of the fuel processing device (100), and is preheated through heat exchange with the first flow path (14) together with the aforementioned vaporized water.

FIG. 6 is a drawing showing the movement path of reformed gas in a high-efficiency fuel processing device according to one embodiment of the present invention.

The vaporized water and hydrocarbon raw material gas supplied from the second heat exchange unit (23) are converted into reformed gas having a temperature range of 600°C to 700°C by a reforming reaction in the reforming reaction unit (25), and the converted reformed gas is supplied to the second flow path (25) and cooled to about 200°C through heat exchange with the first heat exchange unit (22). The reformed gas cooled to about 200°C is supplied to a CO transformation reactor (27) provided at the lower portion of the second flow path (26) so as to be in communication with the second flow path (26), and the CO content is reduced to about 0.1 to 0.5% through the CO transformation reaction, and is discharged to the outside through the reformed gas discharge port (28). The reformed gas discharged to the outside is supplied to the selective oxidation reactor (42) through the supply port (41), and the CO content is reduced to about 10 ppm or less through the CO removal reaction, and then discharged to the outside through the exhaust port (43).

FIG. 7 is a drawing showing the movement path of burner air (burner combustion gas) in a high-efficiency fuel processing device according to one embodiment of the present invention.

The burner air is supplied to the third heat exchanger (32) through the cooling outside air supply port (31), and the burner air, whose temperature has increased through heat exchange with the CO transformation reactor (27), is discharged to the outside through the cooling outside air discharge port (33). The burner air discharged to the outside is supplied to the burner combustion chamber (12) through the gas supply port (13) provided at the top of the fuel processing device (100) together with the fuel gas, and the fuel gas is combusted by the burner (11) provided at the upper center of the burner combustion chamber (12) and converted into burner combustion gas. The burner combustion gas is radially exhausted through a plurality of exhaust holes (12a) provided at equal intervals on the lower side of the burner combustion chamber (12) and flows into the first passage (14) through a plurality of exhaust holes (14a) provided at equal intervals on the inner side of the lower side of the first passage (14). The burner combustion gas flowing through the first duct (14) is cooled through heat exchange with the first and second heat exchange units (22, 23) and discharged to the outside through the burner combustion gas discharge port (15) provided at the top of the fuel processing device (100).

The present invention, having the above configuration, provides a fuel processing device for converting hydrocarbon-based raw material gas or natural gas mainly composed of methane (CH ₄ ) into hydrogen through steam reforming, CO transformation, and CO selective oxidation, thereby providing a durable and highly efficient fuel processing device by maximizing the use of the heat source of burner combustion gas and increasing the heat exchange efficiency according to the operating temperature of each reactor.

Although the preferred embodiments of the present invention have been described above as examples, the scope of the rights of the present invention is not limited to these specific embodiments, and other embodiments may be proposed by addition, change, deletion, addition, etc. of components within a scope obvious to a person skilled in the art who understands the spirit of the present invention, but this should also be interpreted as falling within the scope described in the claims of the present invention.

The scope of this specification is indicated by the claims which follow, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included within the scope of this specification.

[Explanation of symbols]

100 : Fuel treatment unit 11 : Burner

12: Burner combustion chamber 12a: First exhaust hole

13: Gas supply port 14: 1st Euro

14a: Second exhaust hole 15: Burner combustion gas exhaust port

21: Water supply port 22: First heat exchanger

23: Second heat exchanger 24: Hydrocarbon raw material gas supply port

25: Reformer reaction section 26: 2nd Euro

27: CO reforming reactor 28: Reformer gas discharge port

31: Cooling external air supply port 32: Third heat exchanger

33: Cooling outside air exhaust port 41: Supply air port

42: Selective oxidation reactor 43: Exhaust port

51: Cooling water supply port 52: 4th heat exchanger

53: Coolant drain port 61: Insulation

Claims (4)

A burner combustion chamber having a burner at the top and supplied with fuel gas and burner air from the outside to combust the fuel gas; A reforming reaction unit provided on the outside of the burner combustion chamber to convert hydrocarbon-based raw material gas into reforming gas; Insulating material provided on the outside of the above reforming reaction section; A first path provided on the outside of the above insulation material to provide a discharge path for burner combustion gas exhausted from the burner combustion chamber; A second path provided on the outside of the first path and providing a discharge path for the reformed gas exhausted from the reforming reaction unit; A first heat exchanger provided between the first and second ducts to vaporize water supplied from the outside using the heat of the burner combustion gas and the reformed gas; A second heat exchanger provided between the first heat exchanger and the insulation material to preheat the temperature of the vaporized water supplied from the first heat exchanger and the hydrocarbon-based raw material gas supplied from the outside by the heat amount of the burner combustion gas; A CO transformation reactor provided at the lower part of the second passage so as to be in communication with the second passage and for removing CO from the reformed gas; A third heat exchanger provided between the first heat exchanger and the CO transformation reactor and providing a path for burner air supplied to the burner combustion chamber to cool the CO transformation reactor; A selective oxidation reactor provided on the outside of the second fuel cell for additionally removing CO from the reformed gas from which CO has been removed and exhausted from the CO transformation reactor; A fourth heat exchanger provided between the second heat exchanger and the selective oxidation reactor, and providing a path for water supplied to the first heat exchanger to cool the selective oxidation reactor; A high-efficiency fuel treatment device comprising: In the first paragraph, A high-efficiency fuel processing device in which a plurality of exhaust holes are evenly spaced on the lower side wall of the burner combustion chamber so that the burner combustion gas is exhausted radially. In the first paragraph, A high-efficiency fuel processing device further comprising a heater provided on the outside of the CO transformation reactor and the selective oxidation reactor. In the first paragraph, A high-efficiency fuel processing device in which the third heat exchanger is installed in a coil shape on the side wall of the first heat exchanger so that the burner air inside has a spiral movement path.

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