JP2010076965A - Reactor, power generation system and method for manufacturing reactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent displacement which occurs in a reformer and a carbon monoxide remover by welding. <P>SOLUTION: A reactor includes: a first reaction zone; a second reaction zone in which a reaction at a temperature lower than that in the first reaction zone is conducted; and a connecting section which connects the first reaction zone and the second reaction zone. A plate for sealing an internal passage is joined by welding to at least one of the first reaction zone and the second reaction zone. As the connecting section, a plurality of connecting sections are arranged on the confronting respective faces of the first reaction zone and the second reaction zone at predetermined intervals in the height directions of the first reaction zone and the second reaction zone. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a reaction apparatus and a power generation system.

  A fuel cell generates power by an electrochemical reaction between hydrogen and oxygen, and a power generation system equipped with such a fuel cell is provided with a reaction device that generates hydrogen from fuel and supplies it to the fuel cell. . The reactor is provided with a reformer that reforms the fuel into hydrogen and a carbon monoxide remover that removes a small amount of carbon monoxide produced by the reformer. The reformer and the carbon monoxide remover are connected by a connecting portion, and a flow path for sending the gas generated by the reformer to the carbon monoxide remover is formed in the connecting portion ( For example, see Patent Document 1).

Some reactors are of a type formed by laminating a plurality of laminated plates. In this type, each laminated plate has a hole to be a gas flow path, and the laminated plate is laminated so that each flow path of the reformer, the connecting portion, and the carbon monoxide remover It is supposed to be formed.
JP 2002-356310 A

  By the way, when sealing the flow path, it is necessary to join the sealing plate to the laminated plate by welding, but a plurality of reaction parts (reformer, carbon monoxide remover) are connected to each other at the connection part. When it has the structure to connect, there exists a possibility that the heat | fever by welding at the time of sealing a reaction part may be conducted to a connection part, and it thermally deforms, and position shift may generate | occur | produce in a mutual reaction part.

  The subject of this invention is making it possible to prevent the position shift which arises in a reformer and a carbon monoxide remover by welding.

The reaction apparatus according to the invention of claim 1 comprises:
A first reaction part;
A second reaction part in which a reaction different from the first reaction part is performed;
A connecting part for connecting the first reaction part and the second reaction part,
A plate for sealing an internal flow path is joined to at least one of the first reaction part and the second reaction part by welding,
A plurality of the connecting parts are provided on the opposing surfaces of the first reaction part and the second reaction part so as to have a predetermined interval in the height direction of the first reaction part and the second reaction part. It is characterized by being.

Invention of Claim 2 is the reaction apparatus of Claim 1,
The plurality of connecting portions are arranged so as to be symmetric with respect to a center line in a width direction orthogonal to the height direction.

Invention of Claim 3 is the reaction apparatus as described in any one of Claims 1-2,
At least one of the first reaction part and the second reaction part has a structure in which a perforated plate having a large number of holes and a frame plate for surrounding the perimeter of the many holes are alternately stacked in the height direction. It is characterized by being.

Invention of Claim 4 is the reaction apparatus of Claim 3,
The second reaction unit is characterized in that a reaction at a lower temperature than the first reaction unit is performed.

Invention of Claim 5 is the reaction apparatus as described in any one of Claims 1-4,
The perforated plate is made of metal.

Invention of Claim 6 is the reaction apparatus of Claim 5,
The porous plate is made of stainless steel.

  A seventh aspect of the invention is characterized by comprising the reactor according to any one of the first to sixth aspects and a fuel cell.

The invention described in claim 8
A first reaction part;
A second reaction part in which a reaction at a temperature lower than that of the first reaction part is performed;
And a connecting part provided on each of the opposing surfaces of the first reaction part and the second reaction part so as to connect the first reaction part and the second reaction part. A method,
In order to maintain the distance between the first reaction part and the second reaction part, a step of interposing a regulating jig between the opposing surfaces of the first reaction part and the second reaction part;
A step of welding a plate for sealing an internal flow path to at least one of the first reaction portion and the second reaction portion after the restriction jig is interposed. Yes.

  According to the present invention, a plurality of connecting portions are provided on the opposing surfaces of the first reaction portion and the second reaction portion so as to leave a predetermined interval in the height direction of the first reaction portion and the second reaction portion. Therefore, even if one of the connecting parts is likely to be thermally deformed due to the heat of welding when joining the plates, the connecting parts arranged at a predetermined distance from the connecting parts are the first reaction part and the second reaction part. The positional deviation of the part is regulated.

  Further, in order to maintain the distance between the first reaction part and the second reaction part, a regulating jig is interposed between the opposing surfaces of the first reaction part and the second reaction part, and then the internal flow path is changed. Since the plate for sealing is joined by welding, even if the connecting part side is likely to be thermally deformed by the heat of welding when joining the plates, the regulating jig is spaced between the first reaction part and the second reaction part. And the positional deviation is restricted.

  By these things, the position shift which arises in the reformer as a 1st reaction part and the carbon monoxide remover as a 2nd reaction part can be prevented.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a block diagram showing a configuration of a reaction apparatus 2 to which the present invention is applied and a power generation system 1 using the reaction apparatus 2. The power generation system 1 is provided in, for example, a notebook personal computer, a mobile phone, a PDA (Personal Digital Assistant), an electronic notebook, a wristwatch, a digital still camera, a digital video camera, a game device, a game machine, and other electronic devices. Yes, it is used as a power source for operating these electronic device bodies.

  The power generation system 1 includes a reaction device 2, a fuel cartridge 3, and a power generation cell 4 as a fuel cell. In the fuel cartridge 3, for example, fuel such as methanol, ethanol, dimethyl ether, butane, and gasoline and water are stored separately or in a mixed state. Fuel and water are mixed and supplied to the reactor 2 by a micro pump (not shown).

  The reactor 2 includes a vaporizer 5, a reformer 6, a carbon monoxide remover 7, a reforming combustor 8, a vaporizing combustor 9, and a heat exchanger 10.

  The fuel and water supplied from the fuel cartridge 3 to the reactor 2 are sent to the vaporizer 5. Fuel and water are vaporized in the vaporizer 5, and a mixture of fuel and water is sent from the vaporizer 5 to the reformer 6 as a fluid. The vaporization of fuel and water in the vaporizer 5 is caused by absorbing heat of combustion in the vaporization combustor 9.

  The reformer 6 generates hydrogen gas or the like from the vaporized water and fuel by a catalytic reaction, and further generates a carbon monoxide gas with a small amount. When the fuel is methanol, chemical reactions such as the following formulas (1) and (2) occur in the reformer 6. The reaction in which hydrogen is generated is an endothermic reaction, and the combustion heat in the reforming combustor 8 is used.

CH ₃ OH + H ₂ O → 3H ₂ + CO ₂ (1)
H ₂ + CO ₂ → H ₂ O + CO (2)

  The reformed gas including hydrogen gas and carbon monoxide gas generated by the reformer 6 is sent to the carbon monoxide remover 7, and further external air is sent to the carbon monoxide remover 7.

  The carbon monoxide remover 7 selectively removes carbon monoxide by preferentially oxidizing the by-produced carbon monoxide with a catalyst. The reaction in which carbon monoxide is oxidized in this way is an exothermic reaction. However, since the temperature range for performing an appropriate reaction is different from the appropriate temperature range of the reformer 6, the heat of the reformer 6 is increased by the carbon monoxide. Heat exchange is performed between the carbon monoxide remover 7 and the heat exchanger 10 so that the temperature of the carbon monoxide remover 7 does not exceed the proper temperature range due to propagation to the remover 7 too much. Cooling is performed so that the temperature of the carbon remover 7 is maintained in an appropriate temperature range.

  The power generation cell 4 that is a fuel cell includes a fuel electrode 4a, an oxygen electrode 4b, and an electrolyte membrane 4c sandwiched between the fuel electrode 4a and the oxygen electrode 4b. The reformed gas that has passed through the carbon monoxide remover 7 is discharged from the reactor 2 and supplied to the fuel electrode 4a of the power generation cell 4, and further external air is sent to the oxygen electrode 4b. Then, hydrogen in the reformed gas supplied to the fuel electrode 4a undergoes an electrochemical reaction with oxygen in the air supplied to the oxygen electrode 4b via the electrolyte membrane 4c, whereby the fuel electrode 4a and the oxygen electrode 4b. Electric power is generated between them. The electric power output by the fuel electrode 4a and the oxygen electrode 4b is supplied to the electronic device body.

When the electrolyte membrane 4c is a hydrogen ion permeable electrolyte membrane (for example, a solid polymer electrolyte membrane), a reaction represented by the following formula (3) occurs in the fuel electrode 4a, and hydrogen ions generated in the fuel electrode 4a are generated. Permeates the electrolyte membrane 4c, and a reaction represented by the following formula (4) occurs at the oxygen electrode 4b.
H ₂ → 2H ⁺ + 2e ⁻ (3)
2H ⁺ + 1 / 2O ₂ + 2e ⁻ → H ₂ O (4)

  The hydrogen gas remaining without electrochemical reaction at the fuel electrode 4 a is mixed with air, and the mixture of hydrogen gas and air is supplied to the reforming combustor 8 and also to the vaporizing combustor 9. Supplied. The combustors 8 and 9 combust the hydrogen gas remaining without being consumed in the fuel electrode 4a of the power generation cell 4 by a catalytic reaction. As a result, combustion heat is generated. The exhaust gas is discharged from the reforming combustor 8 and the vaporizing combustor 9 to the outside.

  Water is sent to the heat exchanger 10, and the water heated by the carbon monoxide remover 7 or the like is discharged from the heat exchanger 10. The water discharged from the heat exchanger 10 may be once cooled and sent to the heat exchanger 10 again to circulate the water, or may be mixed with the fuel in the fuel cartridge 3 and supplied to the vaporizer 5. May be. A part of the water generated during the electrochemical reaction in the power generation cell 4 may be used as the water for the heat exchanger 10.

Next, the basic configuration of the reaction apparatus 2 will be described.
FIG. 2 is an explanatory view schematically showing a basic configuration inside the reaction apparatus 2, wherein (a) is a top view and (b) is a side view. As shown in FIG. 2, the reaction apparatus 2 includes a reaction apparatus main body 20 and a heat insulating package 30 that accommodates the reaction apparatus main body 20.

  The reaction apparatus body 20 includes a first reaction unit 21, a second reaction unit 22 in which a reaction at a lower temperature than the first reaction unit 21 is performed, and a pair of first reaction unit 21 and the second reaction unit 22. The connection parts 23 and 24 are provided.

  The first reaction unit 21 includes a reformer 6, a reforming combustor 8, and a first heater / temperature sensor 211. The reforming combustor 8 is stacked on the upper surface of the reformer 6, and combustion heat generated in the reforming combustor 8 is conducted to the reformer 6. The first heater / temperature sensor 211 is arranged on the lower surface of the reformer 6, and heat generated by the first heater / temperature sensor 211 is conducted to the reformer 6.

  The second reaction unit 22 includes a carbon monoxide remover 7, a heat exchanger 10, a second heater / temperature sensor 222, a vaporizer 5, a vaporization combustor 9, and a third heater / temperature sensor 223. Is provided. The heat exchanger 10 is laminated on the upper surface of the carbon monoxide remover 7 and performs heat exchange by conduction of heat generated in the carbon monoxide remover 7. The second heater / temperature sensor 222 is stacked on the lower surface of the carbon monoxide remover 7 so that heat generated by the second heater / temperature sensor 222 is conducted to the carbon monoxide remover 7. The vaporizer 5 is disposed adjacent to one end of the carbon monoxide remover 7. Further, a fluid inlet / outlet part 40 protruding from the heat insulating package 30 is disposed on one side of the vaporizer 5. The vaporizing combustor 9 is formed in a substantially U shape (inverse U shape in FIG. 2) when viewed from the side, and the vaporizer 5 is disposed therein. Thereby, the heat generated in the vaporizing combustor 9 is conducted to the vaporizer 5. The third heater / temperature sensor 223 is stacked on the lower surface of the vaporizing combustor 9 so that heat generated by the third heater / temperature sensor 223 is conducted to the vaporizing combustor 9.

One end of each of the three heater / temperature sensors 211, 222, and 223 is commonly connected to the lead wire 62, and the other end is separately connected to the lead wires 61, 63, and 64, respectively.
Further, a getter material 230 for maintaining the degree of vacuum in the sealed space formed by the heat insulating package 30 and the reaction apparatus main body 20 is provided below one end of the carbon monoxide remover 7. The getter material 230 is connected to lead wires 65 and 66 extending outward from the heat insulating package 30. The getter material 230 is activated by heating and adsorbs ambient gas and fine particles, and the degree of vacuum in the heat insulating package 30 is increased or maintained by the getter action.

  A pair of connecting portions 23 and 24 are provided in a predetermined direction in the height direction of the first reaction portion 21 and the second reaction portion 22 on the opposing surfaces 21a and 22a of the first reaction portion 21 and the second reaction portion 22, respectively. It is provided so as to be spaced. The pair of connecting portions 23 and 24 are arranged so as to be symmetric with respect to the center line L in the width direction orthogonal to the height direction. Hereinafter, of the pair of connection parts 23 and 24, the connection part located above is referred to as a first connection part 23, and the connection part located below is referred to as a second connection part 24.

  FIG. 3 is an explanatory view schematically showing the flow path configuration in the reaction apparatus 2. In FIG. 3, the solid line portion indicating the flow path indicates a portion where the reaction is performed by the internal fluid, and the dotted line portion indicates a portion where the fluid simply passes.

  The fluid inlet / outlet 40 includes a cooling water inlet 41, a cooling water outlet 42, a reforming offgas inlet 43, a combustion exhaust gas outlet 44, a fuel inlet 45, an air inlet 46, a vaporizing offgas inlet 47, and A reformed gas discharge port 48 is provided.

  The cooling water introduction port 41 communicates with the cooling water discharge port 42 via a cooling channel 410 formed in the heat exchanger 10. Thus, the water introduced from the cooling water inlet 41 is discharged from the cooling water outlet 42 after absorbing the heat generated in the carbon monoxide remover 7 when passing through the cooling channel 410. become.

  The reforming offgas inlet 43 communicates with the combustion exhaust gas outlet 44 via the reforming offgas passage 430. The reforming off-gas channel 430 is formed in the second reaction unit 22, the second connecting unit 24, and the reforming combustor 8. Here, in the reforming off-gas flow path 430, the locations corresponding to the second reaction section 22 and the reformer 6 are formed so that the fluid simply passes therethrough. As a result, when the air-fuel mixture of off-gas and oxygen (air) discharged from the fuel electrode 4a passes through the reforming off-gas passage 430, hydrogen in the air-fuel mixture is only in the reforming combustor 8. Is burned (oxidized) by oxygen in the air-fuel mixture under the action of the combustion catalyst. This combustion heat is conducted to the reformer 6 and used for the reforming reaction. The exhaust gas after combustion is discharged from the combustion exhaust gas outlet 44 through the reforming off-gas passage 430.

  The fuel introduction port 45 communicates with the reformed gas discharge port 48 via the fuel flow channel 450. The fuel flow channel 450 is formed in the vaporizer 5, the carbon monoxide remover 7, the first connecting portion 23, and the reformer 6. Here, in the forward path until the fluid reaches the reformer 6 in the fuel flow path 450, the fuel simply passes through the locations corresponding to the carbon monoxide remover 7 and the reforming combustor 8. Is formed. On the other hand, in the fuel flow path 450, the carbon monoxide remover 7 is formed so that the reaction occurs in the return path from the reformer 6 to the reformed gas discharge port 48. As a result, when the mixed liquid of fuel and water passes through the forward path of the fuel flow path 450, it is vaporized by the vaporizer 5 and then reacted by the action of the reforming catalyst in the reformer 6. Etc. (see, for example, the above chemical reaction formulas (1) and (2)). Thereafter, when the generated hydrogen or the like passes through the return path of the fuel flow path 450, the carbon monoxide is removed by the carbon monoxide remover 7 and supplied to the power generation cell 4 through the reformed gas discharge port 48. Is done.

  The air inlet 46 communicates with the return path of the fuel flow path 450 through the air flow path 460 formed in the carbon monoxide remover 7. That is, the air introduced from the air inlet 46 is mixed with hydrogen or the like in the fuel flow channel 450. At this time, the carbon monoxide is preferentially oxidized and removed from the air-fuel mixture such as hydrogen, carbon monoxide, and air by the carbon monoxide remover 7 as described above.

  The vaporizing off-gas inlet 47 communicates with the reforming off-gas channel 430 through the vaporizing off-gas channel 470 formed in the vaporizing combustor 9. When the mixture of off-gas and oxygen (air) discharged from the fuel electrode 4a passes through the vaporization off-gas passage 470, the hydrogen in the mixture in the vaporization combustor 9 acts as a combustion catalyst. It receives and burns (oxidizes). This combustion heat is conducted to the vaporizer 5 and used for vaporizing fuel and water. The exhaust gas after combustion is discharged from the combustion exhaust gas outlet 44 through the reforming off-gas passage 430.

Next, the specific structure of the reaction apparatus 2 will be described in detail.
4 is a perspective view showing a specific structure of the reaction apparatus 2, FIG. 5 is an exploded perspective view of the reaction apparatus 2 as viewed from below, and FIG. 6 is an exploded perspective view of the reaction apparatus 2 as viewed from above.
As shown in these drawings, the reaction device main body 20 of the reaction device 2 is sandwiched between an upper lid member 31 and a lower lid member 32 that form a heat insulating package 30. The upper lid material 31 is formed in a state where the lower side is recessed, and the lower lid material 32 is formed in a state where the upper side is recessed. The upper lid member 31 and the lower lid member 32 are made of a metal material such as stainless steel (for example, SUS316L). A radiation prevention film is formed on the inner surfaces of the upper lid member 31 and the lower lid member 32 by, for example, Au plating.

  The reactor main body 20 includes a laminate 300, a plate 310, a wire bonding 330, and a getter material 230.

  The laminated body 300 includes the above-described reformer 6, reforming combustor 8, carbon monoxide remover 7, vaporizer 5, vaporizing combustor 9, heat exchanger 10, connecting portions 23 and 24, fluid input / output A part 40, a cooling channel 410, a reforming off-gas channel 430, a fuel channel 450, an air channel 460, and a vaporizing off-gas channel 470 are formed. In addition, lead wires 61 to 66 are connected to the laminate 300.

  The laminated body 300 has a structure in which perforated plates 340 and frame plates 360 are alternately laminated in the height direction. FIG. 7 is a top view showing an example of the perforated plate 340, and FIG. 8 is a top view showing an example of the frame plate 360. The perforated plate 340 and the frame plate 360 are made of a metal material such as stainless steel such as SUS316L. The perforated plate 340 and the frame plate 360 are respectively provided with first regions 341 and 361 that form the first reaction portion 21, second regions 342 and 362 that form the second reaction portion 22, and outer edges that surround these regions. 343, 363 are provided.

  The first region 341 of the perforated plate 340 mainly constitutes the reformer 6, and a reforming catalyst (for example, a Cu / ZnO-based catalyst or a Pd / ZnO-based catalyst) is supported on the surface thereof. . The first region 341 is connected to the outer edge portion 343 via the connecting piece 344 and is connected to the second region 342 via the connecting piece 345. A number of holes 346 are opened in the first region 341. The numerous holes 346 are arranged with a predetermined regularity. The predetermined regularity is not only arranged in a matrix at predetermined intervals as shown in FIG. 7 but also arranged in a honeycomb shape, for example, or arranged along a plurality of concentric circles. And so on. The first region 341 is provided with holes 347 formed apart from the regularity of the large number of holes 346 in addition to the large number of holes 346. Specifically, the hole 347 is formed in the left rear end portion of the first region 341.

  The second region 342 of the perforated plate 340 mainly constitutes the carbon monoxide remover 7, and a selective oxidation catalyst (for example, platinum) is supported on the surface thereof. The second region 342 is connected to the outer edge portion 343 via connection pieces 348 and 349. In the second region 342, a large number of holes 350 are formed that are arranged with the same regularity as the large number of holes 346 in the first region 341. In addition to the large number of holes 350, the second region 342 is provided with holes 351, 352, and 353 formed outside the regularity of the large number of holes 350. Specifically, the hole 351 is formed at the right front end of the second region 342. The holes 352 and 353 are formed in the vicinity of the connecting piece 349 in the second region 342.

  A pair of extending portions 355 and 356 extending outward are provided on the outer edge portion 343 of the perforated plate 340.

  The first region 361 of the frame plate 360 mainly constitutes the reformer 6, and a reforming catalyst (for example, a Cu / ZnO-based catalyst or a Pd / ZnO-based catalyst) is supported on the inner peripheral surface thereof. ing. The first region 361 is connected to the outer edge portion 363 via the connecting piece 364 and is connected to the second region 362 via the connecting piece 365. The first region 361 is formed in a frame shape so as to surround the periphery of the first region 341 of the perforated plate 340. A frame 366 for enclosing only the hole 347 of the perforated plate 340 is formed at the left rear portion of the first region 361. A space formed by the first region 361 of the frame plate 360 and a large number of holes 346 of the porous plate 340 and a space formed by the frame 366 and the holes 347 of the porous plate 340 become a part of the fuel flow channel 450.

  The second region 362 of the frame plate 360 mainly constitutes the carbon monoxide remover 7, and a selective oxidation catalyst (for example, platinum) is supported on the inner peripheral surface thereof. The second region 362 is connected to the outer edge portion 363 via connection pieces 368 and 369. The second region 362 is formed in a frame shape so as to surround the periphery of the second region 342 of the perforated plate 340. A frame 371 for enclosing only the hole 351 of the perforated plate 340 is formed at the right front portion of the second region 362. A space formed by the second region 362 of the frame plate 360 and a large number of holes 350 of the porous plate 340 and a space formed by the frame 371 and the holes 351 of the porous plate 340 become a part of the fuel flow channel 450. Further, a frame 372 for individually enclosing the holes 352 and 353 of the perforated plate 340 is formed in the vicinity of the connecting piece 369 in the second region 362. A space formed by the frame 372 and the holes 352 and 353 of the perforated plate 340 becomes a part of the vaporizing off-gas channel 470.

  A pair of extending portions 375 and 376 are provided on the outer edge portion 363 of the frame plate 360 so as to individually overlap the extending portions 355 and 356 of the porous plate 340. In the space formed by the extending portions 355 and 356 of the perforated plate 340 and the extending portions 375 and 376 of the frame plate, the liquid absorbing material forming the vaporizer 5 is accommodated. The liquid absorbing material absorbs liquid, and as the liquid absorbing material, inorganic fibers or organic fibers are solidified with a binder, inorganic powder is sintered, inorganic powder is bound with a binder. It may be hardened or a mixture of graphite and glassy carbon. Specifically, a felt material, a ceramic porous material, a fiber material, a carbon porous material, or the like is used as the liquid absorbing material. The liquid mixture passing through the liquid absorbing material is heated and vaporized by the heat generated in the vaporizing combustor 9.

  In the above example, the porous plate 340 and the frame plate 360 that mainly form the reformer 6 and the carbon monoxide remover 7 have been described as examples, but in other porous plates and frame plates, These components (for example, the reforming combustor 8, the vaporizing combustor 9, the heat exchanger 10, the connecting portions 23 and 24, the fluid inlet / outlet portion 40, the cooling channel 410, the reforming off-gas channel 430, The shape is designed based on the fuel flow channel 450, the air flow channel 460, and the vaporizing off-gas flow channel 470).

  An example of the shape of the flow path formed in the laminate 300 is illustrated. FIG. 9 is a perspective view showing the outer shape of the fuel flow path 450 and the air flow path 460 formed in the stacked body 300. FIG. 10 is a perspective view showing the outer shape of the cooling flow path 410 formed in the laminate 300. FIG. 11 is a perspective view showing the outer shape of the reforming off-gas channel 430 and the vaporizing off-gas channel 470 formed in the laminate 300.

  Here, as shown in FIGS. 5 and 6, due to the configuration, each flow path is not sealed only by the laminate 300. Specifically, as shown in FIG. 5, the lower surface of the carbon monoxide remover 7 is opened and the lower surface of the reformer 6 is also opened at the lower surface of the laminate 300. On the other hand, in the upper surface portion of the laminate, as shown in FIG. 6, the upper surface of the vaporizing combustor 9 is opened at two locations, and the upper surface of the carbon monoxide remover 7 is also opened at two locations. By welding, for example, a stainless steel plate 310 to these open portions, each flow path is sealed.

  The plate 310 includes a remover lower plate 311 for sealing the lower surface of the carbon monoxide remover 7, a reformer plate 312 for sealing the lower surface of the reformer 6, and the upper surface of the vaporizing combustor 9. Combustor plates 313 and 314 for sealing, and remover upper surface plates 315 and 316 for sealing a part of the upper surface of the carbon monoxide remover 7 are provided.

A selective oxidation catalyst is supported on the surface of the remover lower surface plate 311 facing the flow path. A reforming catalyst is supported on the surface of the reformer plate 312 facing the flow path.
Further, an electric heating pattern 311a including an electric heating material whose electric resistance depends on temperature is formed on the lower surface of the plate 311 for the lower surface of the remover. The electric heating pattern 311a constitutes the second and third heater / temperature sensors 222, 223. An electric heating pattern 312a having an electric heating material whose electric resistance depends on temperature is also formed on the lower surface of the reformer plate 312. The electric heating pattern 312a constitutes the first heater / temperature sensor 211.

  The wire bonding 330 includes a first wire bonding 331 and a second wire bonding 332. The first wire bonding 331 makes the electric heating pattern 311a and the electric heating pattern 312a conductive. The second wire bonding 332 makes the electrothermal pattern 311a and the lead wires 61 to 64 conductive, and makes the getter material 230 and the lead wires 65 and 66 conductive.

  Next, the operation of this embodiment will be described. In the following description, not only the case where the plate 310 is welded to the laminated body 300 of the present embodiment will be described, but also the conventional laminated body 300A having only one connecting portion unlike the laminated body 300. Both are compared by exemplifying the case where the plate 310 is welded.

  FIG. 12 is a perspective view showing a welding location on the upper surface side in the laminate 300 of the present embodiment. FIG. 13 is a perspective view showing a welding location on the upper surface side in a conventional laminated body 300A that is a comparison target. As shown in FIGS. 12 and 13, the difference between the laminated body 300 of the present embodiment and the conventional laminated body 300A is whether there are two or one connecting portions. That is, the welding locations Y1 to Y4 are both provided at the same location. Moreover, the connection part 23A of the conventional laminated body 300A is provided in the location corresponding to the 1st connection part 23 of the laminated body 300 of this embodiment. In the following description, in the conventional laminated body 300A, a part corresponding to each part of the laminated body 300 of the present embodiment is given a reference numeral with “A” added to the reference numeral of each part.

  First, when the plates 310 (combustor plates 313, 314, remover upper surface plates 315, 316) are welded to the respective welded portions Y1-Y4 of the conventional laminate 300A by laser or the like, the welded portions Y1-Y4 are 1500. It becomes a high temperature of about ℃. As a result, thermal stress is generated and the connecting portion 23A is distorted. The distortion of the connecting portion 23A causes the first reaction portion 21A to be deformed upward (downward in FIG. 13) as shown in FIG.

  Similarly, when the plate 310 is welded to each of the welded portions Y1 to Y4 of the laminated body 300 with a laser or the like, thermal stress is generated as in the above case, and the first connecting portion 23 tends to be distorted. However, since the second connecting portion 24 is stretched on the opposite side of the first connecting portion 23 so as to restrict the deformation of the first reaction portion 21, the distortion of the first connecting portion 23 is restricted. As shown in FIG. 15, the deformation of the first reaction portion 21 is suppressed even after welding.

  Further, the plate 310 (the remover lower surface plate 311 and the reformer plate 312) is also welded to the surface opposite to the above-mentioned welding locations Y1 to Y4, but this also occurs in this case. The second connecting portion 24 tends to be distorted by thermal stress. However, since the first connecting portion 23 is stretched so as to restrict the deformation of the first reaction portion 21 on the opposite side of the second connecting portion 24, the distortion of the second connecting portion 24 is restricted, and the first portion after welding is restricted. The deformation of one reaction part 21 is suppressed.

  As described above, according to the present embodiment, the first reaction unit 21 and the second reaction unit 22 are arranged on the opposing surfaces of the first reaction unit 21 and the second reaction unit 22 in the height direction. Since a plurality of connecting portions 23 and 24 are provided so as to be spaced apart from each other, even if one connecting portion (for example, connecting portion 23) side is likely to be thermally deformed due to the heat of welding when joining the plate 310, the connecting portion The connecting part 24 arranged at a predetermined interval from the part 23 regulates the displacement of the first reaction part 21 and the second reaction part 22. Thereby, the position shift which arises in the reformer 6 as the 1st reaction part 21 and the carbon monoxide remover 7 as the 2nd reaction part 22 can be prevented.

  Moreover, since it is such a structure, the thermal deformation by welding can be suppressed also to the laminated body 300 using the porous plate 340 made of metal (for example, made of stainless steel) that is easily affected by heat.

  Further, since the pair of connecting portions 23 and 24 are arranged so as to be symmetric with respect to the center line in the width direction, the other connecting portion 24 effectively regulates distortion of one connecting portion 23. Is possible.

  The first reaction part 21 and the second reaction part 22 are alternately provided with a perforated plate 340 having a large number of holes 346 and 350 and a frame plate 360 for enclosing the periphery of the many holes 346 and 350 in the height direction. In the case of a laminated structure, it is easily affected by thermal stress due to welding, but even with such a structure, deformation due to welding can be suppressed by the pair of connecting portions 23 and 24.

  Since the large number of holes 346 and 350 of the perforated plate 340 are arranged with a predetermined regularity, the fluid can flow uniformly inside the first reaction unit 21 and the second reaction unit 22.

  Note that the present invention is not limited to the above embodiment, and can be modified as appropriate. In the following description, the same parts as those in the above embodiment are denoted by the same reference numerals and the description thereof is omitted.

  For example, in the present embodiment, the reaction apparatus 2 provided with two connecting portions 23 and 24 has been described as an example, but the number of connecting portions 23 and 24 may be three or more. Also in this case, for example, as shown in FIG. 16, it is preferable that the plurality of connecting portions 231, 232, and 233 are arranged so as to be symmetric with respect to the center line L in the width direction.

Moreover, when welding with respect to the laminated body 300A which has only one connection part 23A mentioned above, as shown in FIG. 17, before welding, each of the 1st reaction part 21A and the 2nd reaction part 22A which opposes each. A regulating jig 400 is interposed between the two surfaces. The regulating jig 400 is for maintaining the distance between the first reaction part 21A and the second reaction part 22A, and is formed in a rectangular column shape having substantially the same length as the connection part 23. And after interposing the control jig | tool 400, the plate 310 for sealing an internal flow path is joined with respect to the 1st reaction part 21A and the 2nd reaction part 22A by welding. As a result, even if the connecting portion 23A side is likely to be thermally deformed by the heat of welding when the plates 310 are joined, the regulating jig 400 maintains the distance between the first reaction portion 21A and the second reaction portion 22A, and the positional deviation occurs. Be regulated.
If the regulation jig 400 is removed after the laminated body 300A is sufficiently cooled after the welding, a reaction apparatus in which the first reaction part 21A and the second reaction part 22A are not misaligned can be provided.

  Further, in the present embodiment, the plurality of reaction units are used as the reformer 6 and the carbon monoxide remover 7, and it has been described in detail that these perform a reforming reaction or a selective oxidation reaction of carbon monoxide. Is not limited to the reaction of the above embodiment. Examples of the reaction other than the reforming reaction or the selective oxidation reaction of carbon monoxide include a synthesis reaction, a cyclization reaction, a decomposition reaction, a condensation reaction, a polymerization reaction, a reduction reaction, and a rearrangement reaction. In other words, the configuration of the present invention can be applied as appropriate to any reaction apparatus that has a connection portion and has a structure in which a plurality of reaction portions are indicated to each other by the connection portion.

It is the block diagram which showed the structure of the reaction apparatus which concerns on this invention, and the electric power generation system using the reaction apparatus. It is explanatory drawing which shows typically the basic structure inside the reaction apparatus of this embodiment, (a) is a top view, (b) is a side view. It is explanatory drawing which showed typically the flow-path structure in the reaction apparatus of FIG. It is a perspective view which shows the specific structure of the reaction apparatus of this embodiment. It is the disassembled perspective view which looked at the reaction apparatus of this embodiment from the lower side. It is the disassembled perspective view which looked at the reaction apparatus of this embodiment from the upper side. It is a top view which shows an example of the porous plate of the laminated body in the reaction apparatus of this embodiment. It is a top view which shows an example of the frame board of the laminated body in the reaction apparatus of this embodiment. It is a perspective view which shows the external shape of the fuel flow path and air flow path which were formed in the laminated body of this embodiment. It is a perspective view which shows the external shape of the flow path for cooling formed in the laminated body of this embodiment. It is a perspective view which shows the external shape of the off gas flow path for a reforming formed in the laminated body of this embodiment, and the off gas flow path for vaporization. It is a perspective view which shows the welding location of the upper surface side in the laminated body of this embodiment. It is a perspective view which shows the welding location of the upper surface side in the conventional laminated body. It is the perspective view which looked at the state after welding of the laminated body of FIG. 13 from the back surface side. It is the perspective view which looked at the state after welding of the laminated body of FIG. 12 from the back surface side. It is a front view which shows the modification in the reaction apparatus of this embodiment. It is a side view which shows the modification in the reaction apparatus of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power generation system 2 Reaction apparatus 3 Fuel cartridge 4 Power generation cell 5 Vaporizer 6 Reformer 7 Carbon monoxide remover 8 Reformation combustor 9 Vaporization combustor 10 Heat exchanger 20 Reactor main body 21 First reaction part 21a Surface 22 Second reaction portion 22a Surface 23 First connection portion (connection portion)
24 Second connecting part (connecting part)
30 Heat insulation package 40 Fluid inlet / outlet part 300 Laminated body 310 Plate 330 Wire bonding 340 Perforated plate 360 Frame plate 400 Regulatory jig L Center line

Claims (8)

A first reaction part;
A second reaction part in which a reaction different from the first reaction part is performed;
A connecting part for connecting the first reaction part and the second reaction part,
A plate for sealing an internal flow path is joined to at least one of the first reaction part and the second reaction part by welding,
A plurality of the connecting parts are provided on the opposing surfaces of the first reaction part and the second reaction part so as to have a predetermined interval in the height direction of the first reaction part and the second reaction part. The reaction apparatus characterized by the above-mentioned. The reactor according to claim 1, wherein
A plurality of the connecting portions are arranged so as to be symmetric with respect to a center line in a width direction orthogonal to the height direction. In the reaction apparatus according to any one of claims 1 to 2,
At least one of the first reaction part and the second reaction part has a structure in which a perforated plate having a large number of holes and a frame plate for surrounding the perimeter of the many holes are alternately stacked in the height direction. A reactor characterized in that The reactor according to claim 3, wherein
The reaction apparatus characterized in that the second reaction section performs a reaction at a temperature lower than that of the first reaction section. In the reaction apparatus according to any one of claims 1 to 4,
The reaction apparatus according to claim 1, wherein the perforated plate is made of metal. The reactor according to claim 5, wherein
The reaction apparatus according to claim 1, wherein the perforated plate is made of stainless steel.   A power generation system comprising the reactor according to any one of claims 1 to 6 and a fuel cell. A first reaction part;
A second reaction part in which a reaction at a temperature lower than that of the first reaction part is performed;
And a connecting part provided on each of the opposing surfaces of the first reaction part and the second reaction part so as to connect the first reaction part and the second reaction part. A method,
In order to maintain the distance between the first reaction part and the second reaction part, a step of interposing a regulating jig between the opposing surfaces of the first reaction part and the second reaction part;
And a step of welding a plate for sealing an internal flow path to at least one of the first reaction part and the second reaction part after interposing the regulating jig. A method for manufacturing a reaction apparatus.

Images