JP4715134B2 - Reactor - Google Patents

Description

  The present invention relates to a reaction apparatus, and more particularly to a reaction apparatus in which reactors having different chemical reaction temperature ranges are integrated.

  In research and development of fuel cells that directly extract electrical energy from chemical energy by electrochemically reacting fuel with oxygen in the atmosphere, small-sized devices such as mobile phones and personal computers are used in small-sized devices. In recent years, research and development of downsizing has been actively conducted for mounting as a power source for home appliances and the like.

  For example, in Patent Document 1, a groove continuously connected in a twisted state is formed on one plane of a first substrate made of polystyrene, and a plane on which the groove is formed and a plane of a second substrate made of polystyrene The invention of a small chemical microreactor that extracts a target product by causing a chemical reaction in a flow path formed by sealing with UV curable resin is provided, and a plurality of such microreactors are combined. It can also be used for a reformer of a fuel cell system.

There are two types of fuel cells: a direct type and a reformed type. In the direct type, liquid fuel such as alcohols and gasoline is directly supplied to the fuel electrode of the fuel cell to generate power. In the reforming type, power is generated by supplying hydrogen obtained by reforming fuel to hydrogen to the fuel electrode. Compared to the reforming type, the direct type has a problem that a part of the fuel passes through the proton permeable membrane and crosses over. On the other hand, the reforming type can have a relatively high output, but requires a reforming device for reforming liquid fuel in addition to the fuel cell.
JP 2002-102681 A

  Combining small devices such as a microreactor provided in Patent Document 1 to form a reformer, etc., and bringing the reactors close together in order to reduce the size of the fuel cell system, the reaction temperature for each reactor is different. Therefore, there is a possibility that each chemical reaction is not sufficiently performed due to the influence of heat.

  An object of the present invention is to provide a reaction apparatus capable of preventing heat interference between reaction apparatuses having different reaction temperatures, performing a suitable chemical reaction, and reducing the size of the reaction apparatus.

In order to solve the above problem, the reaction apparatus according to claim 1 reacts with a first reaction portion that reacts at a first reaction temperature and a second reaction temperature that is lower than the first reaction temperature. A second reaction part;
Arranged between the first reaction part and the second reaction part, at least one surface is made of a material having a lower thermal emissivity than the first reaction part, and a through hole is formed in the thickness direction. Having a low radiation member provided,
At least one of the first reaction part and the second reaction part includes a substrate having a plurality of through holes formed in a thickness direction,
A heater composed of a heating wire is disposed between the through holes of the substrate so as not to overlap the through holes provided in the substrate,
Area of the opposed surfaces of the one of the first reaction portion and a second reaction portion in the low emissivity member, said low radiation member in the one of the second reaction unit and the first reaction unit Larger than the area of the facing surface of
The opening area of the through holes formed in the low radiation member is smaller than the opening area of the first reaction part and the second reaction part of at least the one said through-hole formed in the substrate It is characterized by.

  According to the first aspect of the present invention, the low radiation member having a low heat radiation rate disposed between the first and second reaction parts blocks the radiant heat from the first reaction part and reacts with the reaction temperature. Even if reaction parts having different temperatures are close to each other, they are not affected by heat.

The invention according to claim 1 is characterized in that at least one surface of the low radiation member is formed of a material having a thermal radiation rate lower than that of the first reaction part.

According to invention of Claim 1 , the low radiation member covered with the material with a low heat radiation rate arrange | positioned between the said 1st and 2nd reaction part has a radiant heat rather than the said 1st reaction part. Since it is small, the second reaction part can be reacted at a desired temperature.

The invention according to claim 1, wherein the area of the opposed surfaces of the one of the second reaction unit and the first reaction portion in the low-radiating member, the first reaction part and the second reaction unit It is larger than the area of the opposing surface with the said low radiation member in said one side.

According to the invention described in claim 1, since the area of the opposed surfaces of the low-radiating member is made larger than the area of the first reaction portion and the one of the opposing surfaces of the second reaction unit, the low-radiating member is first less likely to be absorbed radiant heat from the one first reaction portion and a second reaction portion, it is possible to suppress the first reaction part heat loss due to heat radiation at the one of the second reaction unit.

Invention according to claim 1,
At least one of the first reaction portion and the second reaction portion includes a substrate having a through hole formed in a thickness direction.

According to the invention described in claim 1, since the movement of the reaction fluid between at least one and a low radiation member of the first reaction portion and a second reaction unit along the thickness direction, the short travel distance Therefore, the time required for a series of reactions can be shortened.

The invention described in claim 1
The opening area of the through holes formed in the low radiation member is smaller than the opening area of the first reaction part and the second reaction part of at least the one said through-hole formed in the substrate It is characterized by.

The invention described in claim 2
The number of the through holes formed in the low radiation member may be smaller than the number of the first reaction part and the second reaction part of at least the one said through-hole formed in the substrate .

According to invention of Claim 1, 2, since the total area of the opposing surface in a low radiation member can be easily made larger than the total area of said one opposing surface of a 1st reaction part and a 2nd reaction part. , low radiation member is more difficult to absorb the radiant heat from the one of the first reaction portion and a second reaction section, the heat loss due to heat radiation at the one and the first reaction portion and the second reaction unit Can be suppressed.

The invention described in claim 3 is the reactor of claim 1 or 2,
The distance between the low radiation member and the second reaction part is longer than the distance between the low radiation member and the first reaction part.

According to the third aspect of the invention, the radiant heat that cannot be blocked by the low radiating member is reduced by the heat in the first reaction section because the energy is reduced by the time it reaches the second reaction section. The second reaction section can be reacted at a desired temperature without any problems.

  According to the present invention, a temperature suitable for each chemical reaction is maintained in the first reaction part and the second reaction part in which chemical reactions occur under different reaction temperature conditions without being affected by the other reaction temperature. In addition, there is an effect of enabling a sufficient chemical reaction of the fuel.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a side sectional view showing a main part of a reaction apparatus to which the present invention is applied. The reaction apparatus 1 is a reaction apparatus necessary for reforming fuel in a so-called fuel reforming type fuel cell in which hydrogen is generated by chemical reaction of fuel and electric power is generated by an electrochemical reaction of the hydrogen. The fuel cell is a desktop personal computer, notebook personal computer, mobile phone, PDA (Personal digital Assistant), electronic notebook, wristwatch, digital still camera, digital video camera, game device, game machine, home electric device, etc. And is used as a power source for operating the electronic device main body.

  As shown in FIG. 1, the main body 2 of the reactor 1 has a rectangular parallelepiped or cubic box shape with an internal space, and is formed of a heat insulating material having low conductivity such as glass or ceramic. Is. Further, the main body 2 is provided with a fuel supply port 5 and a fuel discharge port 6 through which fuel is circulated near the center of the upper surface 3 and the lower surface 4 which are opposing wall surfaces.

  In the internal space of the main body 2, the reforming unit 10, the carbon monoxide removal unit 11, and the low radiation member 12 are disposed and stored so that the surface directions thereof face each other. In other words, the reforming unit 10 includes a plurality of substrates 7a provided with a plurality of fine through holes in the thickness direction, and a plurality of frame-shaped support members 8a having substantially the same outer peripheral dimensions as the substrate 7a. As shown in FIG. 4, the plane directions are opposed to each other and are alternately combined. The carbon monoxide removing unit 11 is formed by alternately combining the substrate 7b provided with fine through-holes in the surface thickness direction, and the substrate 7b and the support member 8a facing each other in the surface direction. is there. Furthermore, the low radiation member 12 consists of a plate-like body provided with a plurality of fine through holes in the thickness direction. In FIG. 4, description of electrical contacts 17 and 17 and a heater 18 which will be described later is omitted.

As shown in FIG. 2, a plurality of fine through holes formed on the surface of each substrate 7a constituting the modified portion 10 are formed into a flow path 13a through which fuel flows, such as a photolithography method, an etching method, a microblast method, Hexagonal holes are formed by a fine processing technique such as a laser method and arranged in a honeycomb shape.
In the present embodiment, the plurality of fine through holes formed in the substrate 7a have a hexagonal shape, but may be holes having a shape such as a triangle, a quadrangle, a polygon, and a circle.

  Further, as shown in FIG. 3, a catalyst layer 15 for reforming the fuel supplied from the fuel supply port 5 is supported on the inner wall portion of the flow path 13a, and the component thereof is Cu / ZnO-based. Is adopted.

  The substrate 7a is a plane on the fuel supply port side and is connected to the electrical contacts 17, 17 provided at both ends of the substrate 7a between the plurality of flow paths 13a. A heater 18 composed of a heating wire that generates heat when a voltage is applied therebetween is disposed, and heat from the heater 18 propagates to the catalyst layer 15 and the flow path 13a via the substrate 7a, and the fuel supply port. When the fuel supplied from 5 comes into contact with the catalyst layer 15 on the inner wall of the flow path 13a, the fuel is reformed by a chemical reaction.

  On the other hand, as shown in FIG. 2, the plurality of fine through holes formed on the surface of each substrate 7b constituting the carbon monoxide removal unit 11 serve as a flow path 13b through which the fuel flows, and the reforming unit 10 is formed. Similar to the flow path 13a formed in the substrate 7a to be formed, hexagonal holes are processed into a honeycomb shape by the above-described microfabrication technique or the like, and an inner wall portion of the flow path 13b has a modified portion. A Pt-based catalyst layer 20 for removing carbon monoxide from the fuel reformed in 10 by an oxidation reaction is supported. Between the plurality of flow paths 13b on the plane of the modified portion 10 side of the substrate 7b, the electrical contacts 17 and 17 provided at both ends of the substrate 7b are connected to and between the electrical contacts 17 and 17, respectively. A heater 18 composed of a heating wire that generates heat when a voltage is applied is provided, and heat from the heater 18 propagates to the catalyst layer 20 and the flow path 13b through the substrate 7b. When carbon monoxide in the fluid discharged from the reforming unit 10 comes into contact with the catalyst layer 20 on the inner wall of the flow path 13b, the carbon monoxide is removed from the fluid by a chemical reaction and then discharged from the fuel discharge port 6 and the fuel cell. 26 is supplied with a fuel containing hydrogen.

Next, the low radiation member 12 disposed between the reforming unit 10 and the carbon monoxide removing unit 11 will be described.
The low radiation member 12 reduces the heat generated in the reforming unit 10 from being radiated to the carbon monoxide removal unit 11, and is formed from a material having a low thermal radiation rate. That is, any chemical reaction performed in the reforming unit 10 and the carbon monoxide removal unit 11 constitutes the substrate 7a and the carbon monoxide removal unit 11 constituting the reforming unit 10 in order to perform a suitable reaction. Heating by the heater 18 provided on the substrate 7b is required. Here, the range of the reaction temperature for performing the preferred reforming of the fuel in the reforming unit 10 is higher than the range of the reaction temperature for performing the suitable carbon monoxide removing reaction in the carbon monoxide removing unit 11. It is. Therefore, by forming the surface 12a of the low radiation member 12 facing the reforming portion 10 with a material having a low heat radiation rate, heat radiation from the reforming portion 10 having a high reaction temperature range to the carbon monoxide removal portion 11 is achieved. Is to be reduced.
Moreover, it is preferable that the surface 12a facing the reforming part 10 of the low radiation member 12 has a high reflectivity of electromagnetic waves serving as a heat source of heat from the heater 18 provided in the substrate 7a. That is, it is for reflecting electromagnetic waves and maintaining the modified part 10 at a desired temperature efficiently.
Further, the surface 12b facing the carbon monoxide removing portion 11 of the low radiation member 12 also preferably has a high reflectivity of electromagnetic waves serving as a heat source of heat from the heater 18 provided on the substrate 7b. That is, it is for reflecting the electromagnetic waves and efficiently maintaining the carbon monoxide removing unit 11 at a desired temperature.
Specific examples of the material having a low heat radiation rate and a high reflectance of the electromagnetic wave serving as a heat source include gold, aluminum, and the like, and a modified portion of the base of the low radiation member 12 (eg, a glass plate or a ceramic plate) 10, vapor deposition methods such as CVD (Chemical Vapor Deposition) method, PVD (Physical Vapor Deposition) method, sputtering method or vapor phase growth method such as plating on the surface layers of the surfaces 12a and 12b facing the carbon monoxide removal part 11 A thin film such as gold or aluminum may be formed. The low radiation member 12 itself may be formed of a low reflection plate such as a gold or aluminum plate.

  Further, the low radiation member 12 is formed with a flow path 13c through which fuel flows in the thickness direction by the same microfabrication technique as in the case where the substrates 7a and 7b are formed. The low radiation member 12 reduces the area of the surface 12a in order to suppress overheating of the carbon monoxide removal unit 11 when heat rays from the heater 18 provided on the substrate 7a enter the surface 12a of the low radiation member 12. It is relatively larger than the area of the single substrate 7a. That is, when the peripheral shape and dimensions of the low radiation member 12 coincide with the peripheral shape and dimensions of the substrate 7a, the opening area of one flow path 13c is reduced to one flow path 13a formed in the substrate 7a. Compared to the opening area, the number of flow paths 13c may be smaller than the number of flow paths 13a provided on one substrate 7a. By adopting such a structure, it is possible to suppress radiation of an electromagnetic wave that becomes a heat source leaking to the carbon monoxide removal unit 11 through the flow path 13c, and the low reflection surface 12a is provided in the reforming unit 10. Since it becomes difficult to absorb the heat from the heater 18, the heat loss in the reforming part 10 can be suppressed. Of course, the opening area of one flow path 13c of the low radiation member 12 is made smaller than the opening area as compared with one flow path 13a formed in the substrate 7a, and the number of flow paths 13c is one substrate 7a. The number may be smaller than the number of the flow paths 13a provided in.

  In addition, the support member 8b combined between the carbon monoxide removal unit 11 and the low radiation member 12 is compared with the support member 8a combined between the reforming unit 10 and the low radiation member 12. The thickness is large. That is, by providing a certain distance between the low radiation member 12 and the carbon monoxide removal unit 11, the radiated heat radiated from the surface 12 b of the low radiation member 12 reaches the carbon monoxide removal unit 11. Thus, the influence on the reaction temperature of the carbon monoxide removal unit 11 is reduced.

Next, the operation of this embodiment will be described.
The fuel supplied in a vaporized state from the fuel supply port 5 is subjected to hydrogen reforming by the action of the catalyst layer 15 carried on the inner wall of the flow path 13a formed in the substrate 7a of the reforming unit 10. Since the chemical reaction of the catalyst layer 15 is efficiently generated at 250 ° C. to 300 ° C., heat is generated by applying a voltage to the heater 18 disposed between the flow paths 13a of the respective substrates 7a. Maintain temperature.

  Similarly to the reforming unit 10, the carbon monoxide removing unit 11 also has a flow path 13 b formed in the substrate 7 b in order to remove carbon monoxide in the fuel reformed by the reforming unit 10. The catalyst layer 20 supported on the inner wall of the catalyst oxidizes the fuel and oxygen in the air taken from outside to remove carbon monoxide. The catalyst layer 20 is composed of a catalyst layer for aqueous shift reaction and selective oxidation. Since it is a reaction catalyst layer and the desired reaction temperature of the oxidation reaction is 150 ° C. to 200 ° C., it is heated by the heater 18 disposed between the flow paths 13a of the substrates 7b. Thus, the desired reaction temperature in the carbon monoxide removing unit 11 is lower than the desired reaction temperature in the reforming unit 10.

  Therefore, the heat radiated by the heater 18 of the reforming unit 10 is not radiated to the carbon monoxide removal unit 11 by the low radiation member 12 having a low emissivity, and the heat in the reforming unit 10 is high because the reflectance is high. There is little loss and each board | substrate 7a of the modification | reformation part 10 can be hold | maintained uniformly and desired temperature over a surface direction.

  Further, the opening area of the flow path 13c formed in the low radiation member 12 is narrower than that of the flow path 13a, and the number thereof is also smaller than that of the flow path 13a. An area can be secured, and at the same time, the amount of heat electromagnetic waves passing through the flow path 13c is reduced. Further, the thickness of the support member 8b is made thicker than that of the support member 8a, and the distance between the low radiation member 12 and the carbon monoxide removal unit 11 is set as the distance between the substrate 7a and the substrate 7a or the distance between the substrate 7b and the substrate 7b. By making it longer than this, the intensity of the electromagnetic wave passing through the flow path 13c is reduced until it reaches the carbon monoxide removal unit 11, and the influence of heat can be suppressed.

  Next, the operation principle of the fuel cell system equipped with such a reactor 1 will be described. FIG. 5 is a block diagram showing a main configuration of the fuel cell system according to the present embodiment. The fuel stored in the fuel container 21 is a mixture of liquid chemical fuel and water. The chemical fuel includes alcohols such as methanol, ethanol and propanol, ethers such as diethyl ether, and hydrogen atoms such as hydrazine and gasoline. The compound is applied. In the present embodiment, a mixed liquid of methanol and water is used as the fuel, and the molar ratio of methanol and water is set to 1: 1.2.

  The fuel stored in the fuel container 21 is first supplied to the vaporizer 23 by the operation of the fuel pump 22, and the heater 24 heats the vaporizer 23 to 80 ° C. to 120 ° C. Then, the supplied fuel is heated and vaporized to become a mixture of methanol and water vapor. The air-fuel mixture generated in the vaporizing section 23 is supplied to the reaction apparatus 1.

The fuel supplied from the fuel supply port 5 provided on the upper surface of the reactor 1 is first reformed in contact with the catalyst layer 15 when passing through the flow paths 13a of the three substrates 7a of the reforming unit 10. Specifically, as shown in the chemical reaction formula (1), methanol and water vapor mixed in the vaporizing section 23 are heated to 250 ° C. to 300 ° C. by the heater 18 provided on the substrate 7a. Hydrogen and carbon dioxide are generated by the reaction of the catalyst layer 15 heated to ° C.
CH ₃ OH + H ₂ O → 3H ₂ + CO ₂ (1)

The fuel thus reformed is then supplied to the carbon monoxide removal unit 11 via the flow path 13c formed in the low radiation member 12, and the fuel is completely hydrogen and carbon dioxide in the reforming unit 10. In some cases, carbon monoxide is produced together as shown in chemical reaction formula (2).
2CH ₃ OH + H ₂ O → 5H ₂ + CO + CO ₂ (2)

In the carbon monoxide removing unit 11, a fluid containing such carbon monoxide is mixed with atmospheric oxygen introduced from the outside by the air pump 25, and the mixed fluid is mixed with the flow paths 13b of the three substrates 7b. The carbon monoxide is selectively oxidized to carbon dioxide by removing the carbon monoxide by contacting the catalyst layer 20 heated by the heater 18 provided on the substrate 7b when passing through the substrate. ing. Specifically, the chemical reaction formula (3) is shown.
2CO + O ₂ → 2CO ₂ (3)

Thus, the mixture of hydrogen and carbon dioxide chemically reacted in the reactor 1 is supplied to the fuel cell 26, and as shown in the electrochemical reaction formula (4), the hydrogen is converted by the action of the catalyst layer of the fuel electrode. The hydrogen ions are separated into electrons and the hydrogen ions are conducted to the air electrode through the ion conductive membrane, and the electrons are taken out by the fuel electrode. Electric energy is generated by the flow of the extracted electrons.
H ₂ → 2H ⁺ + 2e− (4)

  As described above, according to the present embodiment, the low radiation member 12 disposed between the reforming unit 10 and the carbon monoxide removal unit 11 having different reaction temperatures of the chemical reaction is provided in the reforming unit 10. The radiant heat of the heater 18 is reflected and diffusion due to the heat radiation can be prevented. Further, the opening area of the flow path 13c formed in the low radiation member 12 is made narrower than that of the flow path 13a, and the number thereof is reduced, so that the area of the region where the electromagnetic wave radiation is small can be secured at the same time. Since the amount of electromagnetic waves passing through the path 13c is reduced, the radiant heat transmitted to the carbon monoxide removal unit 11 can be reduced while maintaining a reaction temperature suitable for fuel reforming.

  Further, by increasing the thickness of the support member 8b that supports between the low radiation member 12 and the carbon monoxide removal unit 11 as compared with the support member 8a, the carbon monoxide removal unit 11 having a different reaction temperature is obtained. A suitable chemical reaction can be reliably performed without being affected by the heat of the reforming unit 10. This makes it possible to reduce the size of the reaction apparatus while performing a sufficient chemical reaction even if the reactors having different reaction temperatures are integrated without being arranged independently.

[Second Embodiment]
Next, a second embodiment will be described with reference to FIGS.
The small reactor in the second embodiment is different in the main body 2 and the support members 8a and 8b in the first embodiment, and the other configurations are the same. Hereinafter, the same reference numerals as those in the first embodiment are given to the portions showing the same configuration, and the description thereof is omitted, and different portions will be described.

  As shown in FIGS. 6 and 7, the main body 32 of the small reactor provided with the internal space has a planar surface of the substrate 7 a, the low radiation member 12, and the substrate 7 b inside the side wall surface 33 a and the side wall surface 33 b. A plurality of fitting grooves 34 for supporting both ends are formed. Specifically, as shown in FIG. 7, both ends of the substrate 7a, the low radiation member 12 and the substrate 7b are fitted into the fitting groove 34, respectively, and the reforming portion 10, the low radiation member 12 and the carbon monoxide are removed. The part 11 is supported.

Moreover, the space | interval in which the fitting groove 34 by which the carbon monoxide removal part 11 and the low radiation member 12 are supported among the fitting grooves 34 is formed is formed longer than the space | interval in which the other fitting grooves 34 are formed. Is.
That is, since the reforming unit 10 is heated to a high temperature by the heater 18 in order to promote the chemical reaction, the chemical reaction of the carbon monoxide removing unit 11 whose reaction temperature is lower than that of the reforming unit 10 is improved. This is to reduce the influence of heat radiated from the mass portion 10.

Next, the operation of the second embodiment will be described.
The fuel vaporized in the vaporization unit 23 described above is supplied from the fuel supply port 5 provided on the upper surface of the main body 2, and flows through the flow path 13 a provided in the substrate 7 a of the reforming unit 10. At this time, the fuel is suitably reformed by the action of the catalyst layer 15 carried on the inner wall of the flow path 13a and the heat of the heater 18 provided on the substrate 7a.

  In order to prevent such heat diffusion from the heater 18, as described in the first embodiment, heat radiation is prevented by the low radiation member 12, and a flow path formed in the low radiation member 12. With respect to the radiant heat transmitted through 13c, the reforming section 10 is provided by reducing the radiant heat by separating the space provided with the fitting groove 34 supporting the low radiant member 12 and the substrate 7b longer than the others. The effect of the carbon monoxide removal unit 11 having a low reaction temperature on the chemical reaction is reduced as compared with the above.

  The fuel reformed in the reforming unit 10 flows through a flow path 13c provided in the low radiation member 12 and is supplied to the carbon monoxide removing unit 11, and the carbon monoxide removing unit 11 is generated by reforming. Carbon monoxide is oxidized by a chemical reaction between the catalyst layer 20 carried on the inner wall of the flow path 13b formed in the substrate 7b and oxygen in the atmosphere taken in from the outside by the air pump 25 to generate carbon dioxide. Thus, the fuel that is a mixture of hydrogen and carbon dioxide is discharged from the fuel discharge port 6 and supplied to the fuel cell 26.

  As described above, according to the small reactor in the second embodiment, as in the reaction apparatus in the first embodiment, the substrates 7a and 7b and the low radiation member 12 are supported by the frame-shaped support members 8a and 8b. Instead of using, a fitting groove 34 is formed in the left and right wall surfaces 33a, 33b of the main body, and reaction parts having different reaction temperatures may be integrally formed as a structure in which both ends in the planar direction of the substrate 7a and the like are supported. It is possible to reliably reduce the size of the reaction apparatus without being affected by the mutual reaction temperature.

Although the fuel cell reactor to which the small reactor according to the present invention is applied has been described above, these embodiments do not limit the present invention.
In each of the above embodiments, the reforming unit 10 and the carbon monoxide removal unit 11 are accommodated in the main body 2 as the reaction apparatus 1, and the flow path 13 c is provided between the reforming unit 10 and the carbon monoxide removal unit 11. Although the low radiation member 12 is disposed, the vaporizing section 23, the reforming section 10 and the carbon monoxide removing section 11 are accommodated in the main body 2, and the flow path 13 c is provided between the vaporizing section 23 and the reforming section 10. The low radiation member 12 may be disposed, and the low radiation member 12 may be disposed between the reforming unit 10 and the carbon monoxide removal unit 11. By adopting such a structure, it is possible to prevent the low-temperature reaction part from being overheated by the high-temperature reaction part between the vaporization part 23, the reforming part 10 and the carbon monoxide removal part 11, and each is maintained at a desired temperature. can do.
In each of the above embodiments, the reforming unit 10 and the carbon monoxide removal unit 11 are three and two, respectively. However, the present invention is not limited to these several, and a plurality of different substrates may be used. At least one of the unit 10 and the carbon monoxide removing unit 11 may be composed of only a single substrate.
In each of the above embodiments, the reforming unit 10 and the carbon monoxide removal unit 11 are both through-holes whose flow paths extend in the thickness direction of the substrate. At least one of these may have a structure in which a flow path extending in the surface direction of the substrate and a through hole at an end of the flow path are provided.

It is the sectional side view which showed the principal part structure of 1st Embodiment to which this invention is applied. It is a front view of the board | substrate with which the fine through-hole in 1st and 2nd embodiment to which this invention was applied was formed. It is the front view which expanded a part of board | substrate in the 1st and 2nd embodiment to which this invention is applied. It is the perspective view which showed the combination procedure of the board | substrate and support member in 1st Embodiment to which this invention is applied. It is the block diagram which showed the principal part of the whole structure which applied 1st and 2nd embodiment to which this invention was applied to the fuel cell system. It is the sectional side view which showed the principal part structure of 2nd Embodiment to which this invention is applied. It is the perspective view which showed a part of main body in 2nd Embodiment to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reactor 2 Main body 5 Fuel supply 6 Fuel discharge 7a, 7b Substrate 8a, 8b Support member 10 Fuel reforming part 11 Carbon monoxide removal part 12 Low radiation member 13a, 13b, 13c Flow path 15, 20 Catalyst layer 18 Heater 21 Fuel container 22 Fuel pump 23 Vaporizer 24 Heater 25 Air pump 26 Fuel cell 32 Body 33a, 33b Side wall surface 34 Fitting groove

Claims (3)

A first reaction section that reacts at a first reaction temperature;
A second reaction section that reacts at a second reaction temperature lower than the first reaction temperature;
Arranged between the first reaction part and the second reaction part, at least one surface is made of a material having a lower thermal emissivity than the first reaction part, and a through hole is formed in the thickness direction. A provided low radiation member,
Have
At least one of the first reaction part and the second reaction part includes a substrate having a plurality of through holes formed in a thickness direction,
A heater composed of a heating wire is disposed between the through holes of the substrate so as not to overlap the through holes provided in the substrate,
Area of the opposed surfaces of the one of the first reaction portion and a second reaction portion in the low emissivity member, said low radiation member in the one of the second reaction unit and the first reaction unit Larger than the area of the facing surface of
The opening area of the through holes formed in the low radiation member is smaller than the opening area of the first reaction part and the second reaction part of at least the one said through-hole formed in the substrate A reactor characterized by. The number of the low emissivity member formed said through holes, and characterized in that less than the number of the first reaction part and the second reaction part of at least the one said substrate formed the through hole of The reaction apparatus according to claim 1.   The reaction apparatus according to claim 1 or 2, wherein an interval between the low radiation member and the second reaction unit is longer than an interval between the low radiation member and the first reaction unit. .

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