JP4102080B2 - Fuel reformer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuel reformer for reforming natural gas fuel with the thermal energy of exhaust gas using CO ₂ in the exhaust gas.
[0002]
[Prior art]
Natural gas is known to have methane (CH ₄ ) as its main component. Fuel CH ₄ has a large calorific value and exists in nature, so it is expected as a future alternative fuel for oil. That is, in a gas engine using natural gas as a fuel, exhaust gas is extremely clean, and in a general diesel engine, nitrogen oxides of 500 ppm or more are discharged, but in a gas engine, it is extremely low as 10 ppm or less. In addition, when a gas engine is burned, the amount of carbon dioxide emissions per energy is 30% less than that of petroleum fuel, and it can be said that it is extremely promising as a future anti-pollution engine and fuel. Conventionally, a gas engine has been developed as a cogeneration system. In the cogeneration system, power is extracted as electric energy by a generator, heat of exhaust gas energy is heated by a heat exchanger to make hot water, and the hot water is used for hot water supply. Conventionally, as an engine using natural gas as a fuel, for example, there are those disclosed in JP-A-6-108865 and JP-A-6-101495.
[0003]
However, the biggest drawback of a gas engine using natural gas is that it is difficult to burn the natural gas fuel with good fuel consumption because the natural gas fuel is a gaseous fuel. That is, in diesel combustion, fuel is blown into compressed air, but the fuel cannot be injected into the combustion chamber unless the fuel is compressed to a pressure higher than the compressed air pressure. Therefore, a lot of work is required to compress the fuel to a high pressure, and the fuel efficiency is not necessarily improved. In addition, when fuel is injected into compressed air, gas is not mixed well, gas mileage is not improved, and nitrogen oxides are not reduced.
[0004]
Further, as gas engines using fuels obtained by reforming natural gas, for example, those disclosed in JP-A-11-93777 and JP-A-11-93778 are known. The natural gas reforming apparatus disclosed in Japanese Patent Application Laid-Open No. 11-93777 is pyrolyzed to convert CH ₄ which is a main component of natural gas into CO and H ₂ reformed fuel, thereby improving the thermal efficiency of the fuel and exhaust gas. CO ₂ in the gas is used for thermal decomposition to suppress the generation of NO _x . In the natural gas reformer, an exhaust gas passage body that forms an exhaust gas passage is disposed in an exhaust gas pipe, a gas fuel case through which gas fuel flows is disposed outside the exhaust gas pipe, and the gas fuel passage is disposed in the gas fuel case. A porous member made of porous ceramics to be formed is arranged, and a catalyst having an action of converting CH ₄ and CO ₂ into a reformed fuel of CO and H ₂ is coated on the surface of the porous member. A heat insulating material is arranged on the outer periphery.
[0005]
[Problems to be solved by the invention]
By the way, efforts have been made to improve the fuel efficiency of diesel engines in various directions for several decades, but it is now in a clogged state, and no major improvement can be made. Under such circumstances, the present inventor attempted to increase the calorific value by reforming methane gas in the presence of a catalyst using the heat of exhaust gas. The chemical formula is as follows.
When burning methane gas in air:
CH ₄ + 2O ₂ → CO ₂ + 2H ₂ O + 191290 Kcal / kmol
When carbon dioxide and methane are reacted (endothermic reaction):
CO ₂ + CH ₄ +59190 Kcal / kmol → 2CO + 2H ₂
H ₂ O + CH ₄ +53000 Kcal / kmol → CO + 3H ₂
When burning reformed fuel:
2CO + 2H ₂ + 2O ₂ → 2CO ₂ + 2H ₂ O + 250580 kcal / ₂ kmol
CO + 3H ₂ + 2O ₂ → CO ₂ + 3H ₂ O + 244290 kcal / ₂ kmol.
That is, 250580/191290 = 1.3, and it can be seen that the calorific value increases by 30% or more. Based on this theory, we conducted basic research on the catalyst and performed absorption and separation of CO _{2 from} the exhaust gas. Although completed in principle, both devices are extremely large in size. In order to drive the device, it was found that it requires a complicated structure and cannot be put to practical use. The present invention has been developed to eliminate such a problem.
[0006]
The CH ₄ in the natural gas, using thermal energy of the exhaust gas by the presence of CO _2, in the natural gas reforming device for reforming the H ₂ and CO, when using a CO ₂ separated from the exhaust gas In addition, if O ₂ is contained in the separation gas containing CO ₂ , there is a risk that O ₂ reacts with H ₂ or CO in the catalytic device of the natural gas reformer, and in some cases, a reaction explosion occurs. There is sex. Therefore, it is necessary to reduce as much as possible O ₂ contained in the separated gas containing CO ₂ separated from the exhaust gas fed to the natural gas reformer. In addition, as a conventional method for separating CO ₂ from exhaust gas, an attempt has been made to adsorb CO ₂ to a material in which activated carbon is impregnated with phosphate, and suck and separate CO ₂ from the material. It was complicated and huge, and almost unusable.
[0007]
[Means for Solving the Problems]
An object of the present invention is to solve the above-mentioned problems. For example, it is incorporated into a natural gas engine to reform natural gas, and CO ₂ contained in exhaust gas is used by using zeolite powder. Capturing and using the captured CO ₂ to thermally decompose CH _{4 in} natural gas into CO and H ₂ in the presence of a catalyst using the thermal energy of the exhaust gas, improving thermal efficiency and downsizing It is to provide a fuel reformer that can be configured.
[0008]
The present invention provides a cylindrical housing having a plurality of inlet side openings on one end surface and a plurality of outlet side openings on the other end surface, and is rotatably supported by the housing and includes a plurality of compartments in the rotation direction by a partition plate. A cylindrical rotating container divided into chambers, a metal porous body in which a catalyst is dispersed and adhered onto a coating layer which is housed in the compartment of the rotating container and is coated on the surface, one end surface of the rotating container Connected to the inlet opening and the outlet opening formed on the other end surface of the rotating container and aligned with the outlet opening, and the inlet opening and the outlet opening of the housing. exhaust gas pipe to form an exhaust gas passage that the water vapor tube to form a steam passage, to form a fuel pipe and the air passage forming a fuel passage and into the outlet air from the inlet Air inlet tube Sutame are sequentially disposed,
The coating layer coated on the surface of the refractory of the metal porous body is composed of zeolite powder and / or activated carbon powder is coated on the surface of the alumina and the alumina,
The compartment of the rotating vessel is formed with the exhaust gas passage, the water vapor passage, the fuel passage, and the air passage having a large passage area in accordance with the rotation of the rotating vessel,
The fuel pipe is composed of a natural gas pipe for introducing natural gas connected to the inlet side opening of the housing and a reformed fuel pipe for sending out reformed fuel connected to the outlet side opening of the housing, The present invention relates to a fuel reformer comprising a natural gas pipe and a reformed fuel pipe which are positioned corresponding to the longitudinal direction of the rotary container .
[0009]
The rotating container is supported by a bearing through a rotating shaft passing through the center portion, and heat dissipation is prevented by a vacuum layer formed between the rotating container and the housing.
[0010]
The rotary container is rotationally driven by a motor whose rotation is controlled by a command from a controller so that the exhaust gas pipe, the water vapor pipe, the fuel pipe, and the air introduction pipe are stopped for a certain period of time at a position aligned with the compartment. Controlled.
[0011]
Further, the catalyst dispersed in close contact with the surface of the front Symbol coating layer is composed of Pt, Ru, Ni, in fine powder, such as Al ₂ O _3, Pd.
[0012]
The metal porous body is made of a metal material such as Ni, Cr, Fe, Cu, etc., and the metal porous material is formed by coating the surface of the metal material laminated with respect to a gas flow and then oxidizing the aluminum. Alumina is formed on the surface of the material . Furthermore, SiO ₂ which is a glass layer is disposed on the surface of the alumina coating layer coated on the metal porous body, and the zeolite powder is dispersed and bonded using the glass layer as an adhesive.
[0013]
In this fuel reformer, the catalyst made of fine powder such as Pt, Ru, Ni, Al ₂ O ₃ , Pd is provided on the surface of the metal porous body coated with zeolite powder and / or activated carbon powder. It is dispersed and attached, and has the function of CO ₂ adsorption and natural gas fuel reforming. Alternatively, palladium powder is directly dispersed and adhered to the surface of the metal porous body.
[0014]
The rotating container is rotationally controlled by a motor capable of variably adjusting rotation speed, stoppage, and intermittent rotation according to a command from a controller.
[0015]
In this fuel reformer, exhaust gas is introduced into the compartment of the rotary container through the exhaust gas pipe, and heat of the exhaust gas is transferred to the porous metal body. At the same time, CO ₂ in the exhaust gas is converted into the metal. It is adsorbed by the pre-Symbol coating layer on the surface of the porous body, then, the exhaust gas containing oxygen from the compartment by the introduction through the steam tube vaporized steam to said compartment is discharged, then the partition Natural gas introduced into the chamber through the natural gas pipe is reformed by reacting the natural gas with CO and H _{2 in} the presence of the CO ₂ adsorbed by the zeolite and the water vapor; Air is introduced into the compartment, and the reformed fuel is sent to the engine together with the air.
[0016]
In this fuel reformer, the metal porous body constitutes a metal material having a honeycomb shape, zeolite powder and / or activated carbon powder as alumina and CO ₂ adsorbent constituting the coating layer, and the catalyst. It is composed of a composite material made of fine powder such as Pt, Ru, Ni, Al ₂ O ₃ and Pd.
[0017]
Since this fuel reformer is configured as described above, it can be configured very simply and compactly, and can be recovered as water vapor evaporated by the thermal energy of the exhaust gas, and CO ₂ in the exhaust gas can be recovered from the zeolite. The natural gas can be reformed into H ₂ and CO by allowing CO ₂ and methane gas to flow and react with each other on a carrier that has been collected by the above-described method and onto which the catalyst is attached. That is, in this fuel reformer, the porous metal is heated by the inflow of exhaust gas, the carbon dioxide contained in the exhaust gas is adsorbed by the zeolite, and the oxygen contained in the rotating vessel is sealed by sealing water vapor. When exhaust gas containing is discharged and methane gas is sealed in the rotating vessel in that state, a mixture of methane, CO ₂ and water vapor undergoes an endothermic reaction to cause reforming. The amount of heat generated by the reforming of natural gas improves its thermal efficiency by about 30% when the fuel is enclosed in the engine to generate heat.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a fuel reformer according to the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a fuel reforming apparatus according to the present invention. FIG. 2 is a cross-sectional view taken along the line BB of FIG. 2, and FIG. 2 shows the fuel reformer shown in FIG. is there.
[0019]
The fuel reformer according to the present invention improves the thermal efficiency by reforming the natural gas N used in the gas engine, has a simple structure and can be configured in a small size, and the exhaust gas G Water is vaporized using the thermal energy possessed to form water vapor S, and CH ₄ which is the main component of natural gas N is converted into H ₂ and CO using the thermal energy and CO ₂ contained in the exhaust gas G. The reformed fuel RF is thermally decomposed into a fuel with high thermal efficiency.
[0020]
This fuel reformer is rotatable in a cylindrical housing 1 and a housing 1 in which a plurality of at least four inlet side openings 12 are formed on one end surface and a plurality of at least four outlet side openings 13 are formed on the other end surface. The cylindrical rotary container 2 supported inside and divided into a plurality of compartments 15 in the rotational direction by the partition plate 9 and the inlet side opening 12 and the outlet side opening 13 of the housing 1 are sealed through a seal member 19. Exhaust gas pipe 4 through which exhaust gas G flows, steam pipe through which steam S flows, natural gas pipe through which natural gas N is introduced 6, air introduction pipe 22 through which low-humidity air A flows, and reformed fuel A reformed fuel pipe 20 for sending out RF is provided. The natural gas pipe 6 and the reformed fuel pipe 20 are positioned corresponding to the longitudinal direction. In particular, the metal porous bodies 3 are accommodated in the compartments 15 of the rotary container 2, respectively. Therefore, in the compartment 15 of the rotary container 2, as the rotary container 2 rotates, an exhaust gas passage, a water vapor passage, a fuel passage, and an air passage having a large passage area are sequentially arranged .
[0021]
Further, the rotary container 2 is fixed to a rotary shaft 14 that is rotatably attached to the housing 1 via a bearing 16. An inlet 7 formed on one end surface of the rotary container 2 is positioned so as to be aligned with the inlet-side opening 12 of the housing 1. The outlet 8 formed on the other end surface of the rotating container 2 is positioned so as to be aligned with the outlet side opening 13 of the housing 1. The fuel pipe includes a natural gas pipe 6 for introducing the natural gas N connected to the inlet side opening 12 of the housing 1, and a reformed fuel pipe 20 for sending out the reformed fuel RF connected to the outlet side opening 13 of the housing 1. The natural gas pipe 6 and the reformed fuel pipe 20 are positioned corresponding to the longitudinal direction of the rotary container 2. The air introduction pipe 22 is connected to the reformed fuel pipe 20 in the downstream of the compartment 15 in order to send the reformed fuel RF remaining in the compartment 15 to the engine side. The rotary container 2 is rotatably supported by a base 17 via a bearing 16 in a vacuum layer 18 formed in the housing 1. The rotating container 2 is rotationally driven by a motor 11 whose rotational speed is controlled by a command from the controller 10. Further, the metal porous body 3 has a structure in which metal materials such as metal wires and metal particles are laminated with respect to the gas flow, and has good heat conduction in which intersections and / or contact points are joined. , Has an open pore structure.
[0022]
The surface of the metal porous body 3 is first coated with alumina. The surface of the alumina is coated with zeolite (zeolite) powder and / or activated carbon powder that captures CO ₂ in the exhaust gas. Further, on the surface of the zeolite powder, Pt, Ru (ruthenium), Ni, Al ₂ O ₃ , Pd (palladium), etc., which become a catalyst when reforming natural gas into a reformed fuel of H ₂ and CO A catalyst layer of fine powder is disposed. The metal porous body 3 is made of a metal material such as Ni, Cr, Fe, or Cu. The surface of the metal material is coated with aluminum suitable for adhesion of catalyst, zeolite, and activated carbon, and then the coating surface is oxidized. As a result, alumina is formed on the surface of the metal porous body 3.
[0023]
On the surface of the alumina coating layer coated on the metal porous body 3, SiO ₂ which is a glass layer is attached, and zeolite powder and / or activated carbon powder is dispersed and bonded using the glass layer as an adhesive. A catalyst solution such as chemically dissolved Pt, Ru, Ni, Al ₂ O ₃ , and Pd is dispersed and adhered to the surface of the metal porous body 3 coated with the zeolite powder, and heated to 800 ° C. or higher. It is welded as metal particles. Pd (palladium) can also be directly dispersed and adhered to the surface of the metal porous body 3. Alternatively, a solution containing metal powder can be caused to flow through the metal porous body 3 and attached to the charged metal porous body 3.
[0024]
A motor 11 capable of variably controlling rotation, stop, intermittent rotation, and rotation speed of the rotating container 2 is attached to the rotating container 2 according to a command from the controller 10. The controller 10 is provided in the exhaust gas valve 24 provided in the exhaust gas pipe 4, the steam valve 25 provided in the steam pipe 5, the natural gas valve 26 provided in the natural gas pipe 6, and the air introduction pipe 22. The opening / closing operation of the air valve 23 is controlled over time, and exhaust gas G, water vapor S, natural gas N, and low-humidity air A are sequentially fed into the compartment 15. In other words, the rotary container 2 is rotationally driven by a motor 11 that is rotationally controlled by a command from the controller 10, and a fuel pipe composed of an exhaust gas pipe 4, a steam pipe 5, a natural gas pipe 6 and a reformed fuel pipe 20, and The air introduction pipe 22 is controlled to stop at a position aligned with the compartment 15 for a certain period, and the exhaust gas G, water vapor S, natural gas N, and low-humidity air A are sequentially fed into the compartment 15. The air introduction pipe 22 on the outlet side and the reformed fuel pipe 20 are connected to communicate with an intake pipe (not shown), and the reformed fuel is sent to the engine together with air.
[0025]
In this fuel reformer, exhaust gas is introduced into the compartment 15 of the rotating vessel 2 through the exhaust gas pipe 4, and CO ₂ in the exhaust gas G is adsorbed by zeolite and / or activated carbon on the surface of the metal porous body 3. Next, by introducing the steam S vaporized by the heat energy of the exhaust gas G into the compartment 15 through the steam pipe 5, the exhaust gas G containing oxygen is discharged from the compartment 15, and then the natural gas enters the compartment 15. The natural gas N introduced through the pipe 6 is reacted with CO ₂ adsorbed by zeolite and / or activated carbon and water vapor S to react the natural gas N with CO and H ₂ to form the reformed fuel RN. It is to be modified.
[0026]
The rotating container 2 in the reformed fuel device is formed in a cylindrical body such as a cylindrical shape, for example. The rotating container 2 is partitioned into a plurality of compartments 15 which become a plurality of spaces 21 by a plurality of partition plates 9 extending in the radial direction, and the metal porous body 3 made of a refractory metal is arranged or filled in the spaces 21. ing. The surface of the metal porous body 3 is coated with alumina, and further, zeolite material powder and / or activated carbon powder is coated on the alumina. On the surface of the zeolite material, a catalyst layer made of Pt, Ru, Ni, Al ₂ O ₃ , Pd or the like is dispersedly attached. In this reformed fuel device, when the rotary container 2 rotates in the housing 1, the inlet 7 and the outlet 8 formed in the rotary container 2 are an exhaust gas pipe 4, a steam pipe 5, a natural gas pipe 6, and an air introduction pipe. 22 sequentially passes through the inlet side opening 12 and the outlet side opening 13 of the housing 1 to which 22 is connected.
[0027]
The controller 10 outputs an operation command to the motor 11 to control the rotation operation of the rotating container 2 in order to bring the rotating container 2 into an optimum operating state for reforming the natural gas. It is set to control speed rotation, stop, continuous rotation, or intermittent rotation.
[0028]
In the alumina coating on the surface of the metal porous body 3, the surface of the porous material containing Ni, Cr, Fe, Cu or the like is coated with aluminum, and then the aluminum is oxidized, whereby the metal porous body 3 The surface of this is aluminized. Further, SiO ₂ which is a glass layer is disposed on the surface of the alumina coating, the glass layer is used as an adhesive, and zeolite powder and / or activated carbon powder is dispersed and adhered to the surface of the alumina coating. Further, in the porous metal body 3 coated with zeolite powder and / or activated carbon powder, catalyst metals such as Pt, Ni, Ru, Al ₂ O ₃ and Pd are dissolved in a sol form, The material is dispersed and adhered to the surface of the coating layer of zeolite powder and / or activated carbon powder, and this material is heated to 800 ° C. or higher and welded.
[0029]
In this fuel reformer, the metal porous body 3 has been described as a metal material laminated with respect to the gas flow. However, as another structure, a metal material having a honeycomb shape and an alumina constituting a coating layer And a composite material composed of fine particles of Pt, Ru, Ni, Al ₂ O ₃ , Pd, etc. constituting a catalyst having a fuel reforming function and zeolite powder and / or activated carbon powder as a CO ₂ adsorbent Of course, it can also be done.
[0030]
【The invention's effect】
Since the fuel reformer according to the present invention is configured as described above, CO ₂ in the exhaust gas is captured by zeolite and / or activated carbon, and then captured by natural gas introduced into the compartment. Natural gas is thermally decomposed by the thermal energy of the exhaust gas and the catalyst by CO ₂ and is thermally decomposed to CO and H ₂ to produce reformed fuel. The reformed fuel obtained by reforming the natural gas can be ignited and burned by the engine to improve the thermal efficiency.
[Brief description of the drawings]
FIG. 1 shows a fuel reformer according to an embodiment of the present invention and is a cross-sectional view taken along the line BB of FIG.
FIG. 2 is a cross-sectional view taken along the line AA, showing the fuel reformer of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 2 Rotary container 3 Metal porous body 4 Exhaust gas pipe 5 Water vapor pipe 6 Natural gas pipe 7 Inlet (rotary container)
8 Exit (Rotating container)
9 Bulkhead plate 10 Controller 11 Motor 12 Entrance side opening (housing)
13 Outlet side opening (housing)
DESCRIPTION OF SYMBOLS 14 Rotating shaft 15 Compartment 16 Bearing 17 Base 18 Vacuum layer 19 Seal member 20 Reformed fuel pipe 21 Space 22 Air introduction pipe 23 Air valve 24 Exhaust gas valve 25 Water vapor valve 26 Natural gas valve A Air G Exhaust gas N Natural gas RF Reformed fuel S Steam

Claims (11)

A cylindrical housing having a plurality of inlet side openings on one end surface and a plurality of outlet side openings on the other end surface, rotatably supported by the housing, and the interior is divided into a plurality of compartments in the rotation direction by a partition plate. A cylindrical rotating container, a metal porous body in which a catalyst is dispersed and adhered on a coating layer that is housed in the compartment of the rotating container and is coated on the surface, formed on one end surface of the rotating container, and inlet aligned with the inlet side opening, said rotating container outlet that matches the formed and the outlet opening on the other end face, as well as the inlet-side opening and the outlet opening and the exhaust gas passage that will be connected to each of said housing exhaust gas pipe to form a water vapor tube to form a steam passage, the fuel pipe forming a fuel passage and the air to flow to form an air passage to said outlet air from said inlet Introducing tube are arranged sequentially,
The coating layer coated on the surface of the heat-resistant porous metal body is made of alumina, zeolite powder and / or activated carbon powder coated on the surface of the alumina, and the compartment of the rotating container is formed of the compartment. The exhaust gas passage, the water vapor passage, the fuel passage, and the air passage having a large passage area are sequentially formed with the rotation of the rotating container,
The fuel pipe is composed of a natural gas pipe for introducing natural gas connected to the inlet side opening of the housing and a reformed fuel pipe for sending out reformed fuel connected to the outlet side opening of the housing, A fuel reformer comprising: a natural gas pipe and the reformed fuel pipe positioned in correspondence with a longitudinal direction of the rotary container . The rotating vessel, heat radiator is prevented by a vacuum layer formed between said housing, according to claim 1 which comprises rotatably supported by bearings through an axis of rotation passing through the center portion Fuel reformer. The rotary container is rotationally driven by a motor whose rotation is controlled by a command from a controller so that the exhaust gas pipe, the water vapor pipe, the fuel pipe, and the air introduction pipe are stopped for a certain period of time at a position aligned with the compartment. The fuel reformer according to claim 1 or 2, wherein the fuel reformer is controlled by the control. Before SL said catalyst dispersed in close contact with the surface of the coating layer _{Pt, Ru, Ni, Al 2} O 3, and consists configured with at least one fine powder selected from Pd claim 1 the fuel reforming apparatus according to any one of 3. The metal porous body is made of at least one metal material selected from Ni, Cr, Fe, and Cu , and the aluminum is coated on the surface of the metal material laminated with respect to a gas flow, and then the aluminum is coated. The fuel reformer according to any one of claims 1 to 4 , wherein alumina is formed on a surface of the porous metal body by oxidation. On the surface of the metal porous body coated alumina coating layer, it is disposed SiO ₂ is a glass layer consists of zeolite powder is dispersed bonding the glass layer as an adhesive claim 1-5 The fuel reformer according to any one of the above. On the surface of the front Symbol metal porous body, Pt, Ru, Ni, Al 2 O 3, and the catalyst dispersed by attaching consisting of at least one fine powder selected from Pd, and the adsorption of CO ₂ The fuel reformer according to any one of claims 1 to 6 , further comprising a fuel reforming function of natural gas. The fuel reformer according to any one of claims 1 to 7 , wherein palladium powder is dispersed and adhered to the surface of the metal porous body. The fuel according to any one of claims 1 to 8 , wherein the rotary container is controlled to rotate by a motor capable of variably adjusting a rotation speed, rotation, stop, and intermittent rotation according to a command from a controller. Reformer. Exhaust gas is introduced into the compartment of the rotating container through the exhaust gas pipe, and the heat of the exhaust gas is transferred to the porous metal body, and at the same time, CO ₂ in the exhaust gas is in front of the surface of the porous metal body. The exhaust gas containing oxygen is exhausted from the compartment by introducing the vapor adsorbed by the coating layer and then vaporized into the compartment through the steam pipe, and then through the natural gas pipe to the compartment. The introduced natural gas is reformed by reacting the natural gas with CO and H _{2 in} the presence of the CO ₂ adsorbed by the zeolite and the water vapor, and then air is introduced into the compartment is, fuel reforming apparatus according to any one of claims 1 to 9, consisting in feeding said reformed fuel to the engine together with the air. The porous metal body includes a metal material having a honeycomb shape, zeolite powder and / or activated carbon powder as an alumina and CO ₂ adsorbent constituting the coating layer, and Pt, Ru, Ni, Al constituting the catalyst. ₂ O _3, and a fuel reforming apparatus according to any one of claims 1 to 10 comprising a be composed of a composite material consisting of at least one fine powder selected from Pd.

Images