JP2007311164A - Combustion burner for reformer of fuel cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combustion burner for a reformer of a fuel cell which is structured so as to stably burn heating fuel by preventing a misfire caused if the heating fuel containing moisture is supplied, without changing the direction of the combustion burner. <P>SOLUTION: This combustion burner for the reformer of the fuel cell (combustion burner 100) to heat a reforming catalyst which generates a reforming gas to be supplied to a fuel cell by reacting the reforming fuel with steam is equipped with a heating fuel introducing part 110 for introducing the heating fuel, a heat-resistant three dimensional porous body 116 disposed on the downstream side of the heating fuel introducing part 110 in the stream of the heating fuel to absorb moisture contained in the heating fuel, and an ignition electrode 120 disposed on the downstream side of the heat-resistant three dimensional porous body 116 to burn the heating fuel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combustion burner for a reformer of a fuel cell.

A reformer of a fuel cell is a reformed gas containing hydrogen to be supplied to a fuel cell by reacting a reforming fuel (for example, city gas containing methane as a main component) and water vapor with a reforming catalyst. Hydrogen mixed gas) is generated. Since the reaction (steam reforming reaction) by the above reforming catalyst is an endothermic reaction, it is necessary to continuously heat the reforming catalyst from the outside. Therefore, in a reformer of a fuel cell, generally, a reforming catalyst is heated by burning a fuel for heating with a combustion burner (see, for example, Patent Document 1).
JP 2003-148709 A (paragraphs 0014 to 0017, 0022, 0023, FIGS. 1 and 2 etc.)

  By the way, the heating fuel combusted by the combustion burner consists of a dry gas such as a reforming fuel at the start of the fuel cell, but the reformed gas or fuel generated by the reformer during normal operation. It consists of wet gas such as reformed gas (unreacted gas) that was not used in the battery. For this reason, when the outside air temperature is low, moisture contained in the fuel for heating (specifically, the reformed gas) may be condensed to generate condensed water.

  When heating fuel containing condensed water is supplied to the combustion burner, the ignition part of the combustion burner, i.e., the ignition electrode, becomes wet, thereby causing misfires and the like, which makes it impossible to perform stable combustion. There was a fear. Therefore, it is conceivable to change the direction of the combustion burner or to provide a steam separator to prevent the heating fuel containing moisture from coming into contact with the ignition part. However, this is difficult due to the layout of the reformer. There are many cases.

  Accordingly, the object of the present invention is to solve the above-mentioned problems and prevent a misfire caused by supplying a heating fuel containing a lot of moisture without changing the direction of the combustion burner and the like, and stable combustion. An object of the present invention is to provide a combustion burner for a reformer of a fuel cell.

  In order to solve the above-mentioned object, according to claim 1, a reforming catalyst that heats a reforming catalyst that generates reformed gas to be supplied to the fuel cell by reacting the reforming fuel and water vapor. In the reformer combustion burner, an introduction part for introducing a heating fuel, a water absorption part that is disposed downstream of the introduction part in the flow of the heating fuel and absorbs moisture contained in the heating fuel, and And an ignition unit that is disposed downstream of the water absorption unit and burns the heating fuel when ignited.

  In Claim 2, the said water absorption part was comprised so that it might consist of a heat-resistant three-dimensional porous body.

  According to a third aspect of the present invention, the heat-resistant three-dimensional porous body is configured to be made of any one of a foam metal and a ceramic porous body.

  In the combustion burner for the reformer of the fuel cell according to claim 1, the introduction portion for introducing the heating fuel, and the heating fuel (specifically, disposed downstream of the introduction portion in the flow of the heating fuel) Is provided with a water absorption part that absorbs moisture contained in the reformed gas and unreacted gas, and an ignition part that is disposed downstream of the water absorption part and burns the fuel for heating when ignited. Most of the water contained in the heating fuel is absorbed by the water absorption part and does not contact the ignition part. Thereby, misfire caused by supplying a fuel containing a lot of moisture to the combustion burner can be prevented without changing the direction of the combustion burner, and thus stable combustion can be performed.

  In the combustion burner for the reformer of the fuel cell according to claim 2, since the water absorption part is configured to be made of a heat-resistant three-dimensional porous body, the above-described effects can be obtained while having a simple configuration. it can.

  In the combustion burner for the reformer of the fuel cell according to claim 3, the heat-resistant three-dimensional porous body is constituted by any one of the foam metal and the ceramic porous body. Effects can be further obtained.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a fuel cell reformer combustion burner according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a schematic view for explaining a reformer having a combustion burner for a reformer of a fuel cell according to an embodiment of the present invention.

  In FIG. 1, reference numeral 10 denotes a fuel cell (stack). The fuel cell 10 is a single cell comprising an electrolyte membrane (solid polymer membrane), a cathode electrode (air electrode) and an anode electrode (fuel electrode) that sandwich the membrane, and a separator disposed outside each electrode. This is a known polymer electrolyte fuel cell formed by laminating a plurality of layers.

  The fuel cell 10 is connected to a cathode gas supply system 12 that supplies a cathode gas (reaction air) to the cathode electrode, and an anode gas supply system 14 that supplies an anode gas (reformed gas, hydrogen mixed gas) to the anode electrode. Is done.

  The cathode gas supply system 12 includes an air cleaner 16 that removes atmospheric (air) dust, a cathode gas pump 20 that pumps air that has passed through the air cleaner 16 to the fuel cell 10 as a cathode gas, and a cathode gas pump 20 that serves as the cathode of the fuel cell 10. A cathode gas flow path 22 connected to a pole inlet (not shown).

  The anode gas supply system 14 reacts reforming fuel (for example, desulfurized city gas) and steam with a reforming catalyst (not shown in FIG. 1), and supplies hydrogen to be supplied to the anode electrode of the fuel cell 10. And a reformer 24 for generating reformed gas (anode gas) containing anode and an anode gas flow path 26 for connecting the reformer 24 to the inlet (not shown) of the anode electrode of the fuel cell 10. The reformer 24 will be described in detail later.

  The fuel cell 10 includes an output terminal 28 that outputs electric power generated in the fuel cell 10, and a power control system 30 is connected to the output terminal 28. The power control system 30 includes an electronic control unit (hereinafter referred to as “ECU”) 32 composed of a microcomputer and the like, an inverter 34 that converts a direct current into an alternating current of a predetermined frequency, and the like. The ECU 32 controls the operation of auxiliary equipment such as the cathode gas pump 20, the inverter 34, and an ignition electrode of a combustion burner described later.

  Further, the fuel cell 10 includes an exhaust system 36 that exhausts the cathode gas (hereinafter referred to as “cathode off-gas”) discharged from the fuel cell 10 and an anode gas (unreacted gas, which is not used in the fuel cell 10 hereinafter). A reflux system 40 is connected to reflux the fuel cell 10 and the reformer 24.

  The recirculation system 40 includes a first anode offgas passage 42 that connects an anode offgas discharge port (not shown) that discharges the anode offgas of the fuel cell 10 and the anode gas passage 26 described above, and a first anode offgas. A first anode off-gas flow path 42 branched from the flow path 42 and a reformer of the reformer 24 (to be precise, a fuel introduction part for heating the combustion burner (not shown in FIG. 1)) are described below. And a second anode off-gas flow path 44 to be connected. Further, the reflux system 40 includes an anode gas reflux path 46 that is branched from the anode gas path 26 and connects the anode gas path 26 and the second anode off-gas path 44.

  In addition to the above-described components, the fuel cell 10 is connected to a cooling system for cooling the fuel cell 10 and a humidifier for humidifying the cathode gas. These have a direct relationship with the gist of the present application. Since it does not have any, illustration and description are omitted.

  Next, the operation of the fuel cell 10 will be described.

The cathode gas supplied to the cathode electrode of the fuel cell 10 causes an electrochemical reaction with the anode gas supplied to the anode electrode. The electrode reaction occurring at the cathode and anode is specifically as follows.
Anode electrode: H ₂ → 2H ⁺ + 2e ⁻
Cathode electrode: 1 / 2O ₂ + 2H ⁺ + 2e ⁻ → H ₂ O
Therefore, the overall reaction is:
Overall: H ₂ + 1 / 2O ₂ → H ₂ O

  The electric power (DC current) generated by the fuel cell 10 by the above reaction is taken out from the output terminal 28, a part of which is used as a power source for auxiliary equipment such as the ECU 32 and the cathode gas pump 20, and the remainder is the inverter 34. Is supplied to an electric load (AC power supply device) 50 via the.

  The cathode off gas discharged from the fuel cell 10 is discharged into the atmosphere through the exhaust system 36. Further, the anode off gas discharged without being used in the fuel cell 10 is recirculated to the anode gas channel 26 via the first anode off gas channel 42 and is supplied to the fuel cell 10 again. The anode off gas is further supplied to a combustion burner (described later) of the reformer 24 via the first and second anode off gas passages 42 and 44. A part of the anode gas generated in the reformer 24 is also supplied to the combustion burner of the reformer 24 via the anode gas passage 26, the anode gas recirculation passage 46, and the second anode off-gas passage 44. The

  Next, the reforming device 24 of the fuel cell 10 will be described in detail.

  The reformer 24 includes a desulfurizer 54 that removes an odorant (such as an organic sulfur compound) of city gas, a reformer 56 into which city gas (reforming fuel) that has passed through the desulfurizer 54 is flowed, The desulfurizer 54 is used as a reformer 56 (more precisely, a reforming fuel pipe of the reformer 56 and a combustion air / reforming fuel introduction section of a combustion burner (both not shown in FIG. 1)). A reforming fuel flow path 60 to be connected, a water feed pump 62 that pumps water used for reforming (hereinafter referred to as “reforming water”) to the reformer 56, and the water feed pump 62 is connected to the reformer 56 (accurately). Includes a reforming water channel 64 connected to a reforming water pipe (not shown in FIG. 1) of the reformer 56 described later.

  The reformer 24 further includes an air cleaner 66 that removes atmospheric dust, and combustion that pumps the air that has passed through the air cleaner 66 to the reformer 56 as air for burning fuel for heating (hereinafter referred to as “combustion air”). An air pump 70, a combustion air flow path 72 that connects the combustion air pump 70 to the reformer 56 (more precisely, combustion air of the combustion burner / reforming fuel introduction section), and combustion generated in the reformer 56 And a combustion exhaust gas channel 74 for exhausting the exhaust gas into the atmosphere.

  FIG. 2 is an explanatory cross-sectional view showing a cross section of the reformer 56.

  As shown in the figure, the reformer 56 includes a reforming unit 76 that causes reforming fuel and reforming water to react with the reforming catalyst, a heating unit 80 that heats the reforming catalyst of the reforming unit 76, and a substantially cylindrical shape. And a case portion 82 that accommodates the reforming portion 76 and the heating portion 80.

  The reforming unit 76 is filled with the reforming fuel pipe 84 connected to the reforming fuel flow path 60, the reforming water pipe 86 connected to the reforming water flow path 64, and the reforming catalyst 90. Reformed pipe 92, reformed gas pipe 94 connected to the reformed pipe 92, and inserted in the middle of the reformed gas pipe 94, and carbon monoxide (CO) remaining in the reformed gas is removed. And a CO removing unit 96.

  The heating unit 80 includes a combustion burner (reformer combustion burner) 100 disposed at the upper end 82 a of the case unit 82, a combustion chamber 102 connected downward on the paper surface of the combustion burner 100, and a combustion burner 100 in the combustion chamber 102. And a flue gas pipe 104 that discharges the flue gas generated by the combustion.

  FIG. 3 is an enlarged explanatory cross-sectional view showing an enlarged cross section near the combustion burner 100 of the heating unit 80.

  The combustion burner 100 is connected to the second anode off-gas flow path 44 described above, and part of the anode off-gas discharged from the fuel cell 10 and the anode gas generated in the reformer 24, in other words, reforming. A heating fuel introduction section (introduction section) 110 that introduces gas as a heating fuel is connected to the combustion air passage 72 and the reforming fuel passage 60, and introduces the combustion air and the reforming fuel as the heating fuel. The combustion air / reforming fuel introduction section 112, the combustion pipe 114 for mixing the heating fuel and the combustion air, and the downstream side of the heating fuel introduction section 110 inside the combustion pipe 114 in the flow of the heating fuel The heat-resistant three-dimensional porous body (water-absorbing portion) 116 that is disposed in the heating fuel and absorbs moisture contained in the heating fuel and the vicinity of the lower end of the combustion pipe 114, in other words, the heat-resistant tertiary in the flow of the heating fuel Disposed downstream of the porous body 116, and a ignition electrode (igniter) 120 for burning fuel for heating when it is ignited.

  As shown in FIG. 3, the heating fuel introduction section 110 has an inverted L shape, and the heating fuel introduction pipe 122 that introduces the heating fuel introduced from the second anode off-gas flow path 44 into the combustion pipe 114. Is provided. In addition, a plurality (specifically, six (only three are shown)) of gas permeation holes 122a are formed at substantially lower intervals at the lower end of the heating fuel introduction pipe 122. Therefore, the heating fuel flowing through the heating fuel introduction pipe 122 is introduced into the combustion pipe 114 while being diffused by passing through the gas permeation holes 122a. The combustion air / reforming fuel introduction section 112 introduces combustion air and reforming fuel introduced from the combustion air passage 72 and the reforming fuel passage 60 into the combustion pipe 114. It consists of a quality fuel introduction pipe 124.

  The combustion tube 114 has a substantially cylindrical shape, and the heat-resistant three-dimensional porous body 116 has a shape filled in the combustion tube 114, that is, a substantially columnar shape. The heat-resistant three-dimensional porous body 116 has heat resistance and has a three-dimensional network structure, specifically, uniform pores with a diameter of about 1 [μm], and can absorb moisture contained in the passing gas. It is a serious substance. More specifically, it consists of a foam metal made from nickel (Ni) or copper (Cu) and a ceramic porous body.

  Returning to the description of FIG. 2, the combustion chamber 102 of the heating unit 80 is arranged such that the upper part 102 a is near the upper end 82 a of the case part 82 and the lower part 102 b is near the lower end 82 b of the case part 82. . The combustion chamber 102 communicates with the combustion exhaust gas pipe 104 at the lower part 102b. The flue gas pipe 104 extends upward along the outer wall 102 c of the combustion chamber 102, then bends in the vicinity of the upper end 82 a of the case portion 82, and is then connected to the flue gas passage 74 described above.

  The reforming water pipe 86 of the reforming section 76 circulates around the outer periphery 96a of the ring-shaped CO removing section 96 disposed so as to surround the combustion chamber 102, the combustion exhaust gas pipe 104 and the like a plurality of times (four times). And then disposed inside the combustion exhaust pipe 104. The reforming water pipe 86 disposed in the interior 104a of the combustion exhaust pipe 104 is disposed so as to circulate a plurality of times (four times) around it while being in contact with the outer wall 102c of the combustion chamber 102.

  A reforming fuel pipe 84 is connected to the reforming water pipe 86 via a connection portion 130. Hereinafter, the reforming water pipe 86 on the downstream side of the connecting portion 130 in the reforming water flow of the reforming water pipe 86 is referred to as “reforming fuel / water pipe” and denoted by reference numeral 132. The reforming fuel / water pipe 132 is further arranged so as to go around the outer wall 102 c of the combustion chamber 102 a plurality of times (four times), and then connected to the reforming pipe 92.

  The reforming pipe 92 extends downward while being in contact with the combustion exhaust gas pipe 104, and communicates with the reformed gas pipe 94 at the lower end 92a thereof. The reformed gas pipe 94 extends upward along the outer wall 92b of the reformed pipe 92, then bends in the vicinity of the upper end 82a of the case portion 82, and is then connected to the anode gas flow path 26 described above. . In the interior of the case portion 82 of the reformer 56, a heat insulating material 134 is disposed (filled) in a space other than each component such as the combustion chamber 102 and the reforming pipe 92 described above.

  Next, the operation of the reformer 24 configured as described above will be described with reference to FIGS.

  The odorant is removed from the city gas supplied from a city gas supply source (not shown) by the desulfurizer 54. Thereby, it is possible to prevent the reforming catalyst 90 and the like disposed downstream in the city gas flow from being poisoned by sulfur. The city gas from which the odorant has been removed, that is, the reforming fuel, is reformed through the reforming fuel flow channel 60, more specifically, the reformer 56, when the fuel cell 10 is started. Is supplied to the combustion air / reforming fuel introduction section 112 of the combustion burner 100 as heating fuel.

  Further, the combustion air sucked by the combustion air pump 70 and from which dust has been removed by the air cleaner 66 is also supplied to the combustion air / reforming fuel introduction section 112 of the combustion burner 100 via the combustion air flow path 72. The reforming fuel and the combustion air supplied to the combustion air / reforming fuel introduction section 112, that is, the air-fuel mixture, are discharged toward the combustion pipe 114.

  When the air-fuel mixture passes through the heat-resistant three-dimensional porous body 116 in the combustion tube 114, moisture contained in the air-fuel mixture is absorbed by the heat-resistant three-dimensional porous body 116. At this time, since the reforming fuel and the combustion air passing through the heat-resistant three-dimensional porous body 116 are relatively dry gases, a small amount of water is absorbed by the heat-resistant three-dimensional porous body 116.

  The air-fuel mixture that has passed through the heat-resistant three-dimensional porous body 116 is ignited (ignited) by the ignition electrode 120 and burned. The combustion exhaust gas generated by the combustion of the combustion burner 100 flows downward as viewed in the drawing, as indicated by arrows in FIG. The combustion exhaust gas passes through the inside of the combustion chamber 102 and is supplied to the combustion exhaust gas pipe 104. The combustion exhaust gas supplied to the combustion exhaust gas pipe 104 flows upward in FIG. 2 while raising the temperature of the interior 104 a and the wall surface of the combustion exhaust gas pipe 104. At this time, the reforming pipe 92 is disposed such that the outer wall 92b thereof is in contact with the combustion exhaust gas pipe 104, so that the heat of the combustion exhaust gas pipe 104 is transmitted and heated. Accordingly, the reforming catalyst 90 filled in the reforming pipe 92 is also heated and heated. Thereafter, the flue gas in the flue gas pipe 104 is introduced into the flue gas passage 74 and discharged into the atmosphere.

  When it is determined that the reforming catalyst 90 has been heated to a temperature at which the reforming catalyst 90 can be reformed (specifically, about 700 [° C.]) based on the output of a reforming catalyst temperature sensor (not shown) or the like, The reforming operation is started. Specifically, reforming water from a water supply source (not shown) sucked by the water pump 62 is caused to flow into the reforming water pipe 86 through the reforming water flow path 64.

  The reforming water pipe 86 is arranged so as to circulate around the outer periphery 96a of the CO removing unit 96 that becomes relatively high temperature, and is arranged in the interior 104a of the combustion exhaust pipe 104 that has been heated by the above-described combustion exhaust gas. Therefore, it will be heated by them. As a result, the reforming water that has flowed into the reforming water pipe 86 evaporates into steam, and the steam flows into the reforming fuel pipe 84 via the reforming fuel flow path 60 at the connection portion 130. The reformed fuel is combined and mixed.

  The reformed fuel and water vapor that have been mixed pass through the reforming fuel / water pipe 132 and then flow into the reforming pipe 92. The reforming catalyst 90 of the reforming pipe 92 is heated by the flue gas pipe 104 and heated to a temperature capable of reforming, so that a steam reforming reaction takes place, that is, with the mixed reforming fuel and A reformed gas containing hydrogen is generated from the steam.

The steam reforming reaction is specifically as follows.
CH ₄ + H ₂ O → CO + 3H ₂
Part of the carbon monoxide produced at this time further reacts with water vapor to produce hydrogen and carbon dioxide (that is, a shift reaction takes place). Specifically, it is as follows.
CO + H ₂ O → CO ₂ + H ₂

  The generated reformed gas is caused to flow into the CO removing unit 96 through the reformed gas pipe 94. Here, the reformed gas is allowed to flow into the anode gas flow channel 26 after the CO remaining in the reformed gas is removed. In this way, the reforming operation is performed by the reformer 56 to generate the reformed gas (anode gas).

  When the reformed gas is supplied to the fuel cell 10, the above-described electrochemical reaction occurs in the fuel cell 10, power is generated, and the fuel cell 10 is in a normal operation. During normal operation of the fuel cell 10, the amount of reforming fuel supplied from the reforming fuel flow path 60 to the combustion air / reforming fuel introducing unit 112 is gradually reduced, and finally The supply is stopped.

  As the amount of reforming fuel supplied decreases, reformed gas is supplied to the combustion burner 100 as a heating fuel instead of the reforming fuel. Specifically, the reformed gas (specifically, the anode offgas and the anode gas flowing through the second anode offgas passage 44) is supplied (introduced) to the heating fuel introduction unit 110 of the combustion burner 100.

  The reformed gas is mixed with the combustion air from the combustion air / reforming fuel introduction section 112 in the combustion pipe 114, and is included in the air-fuel mixture when the air-fuel mixture passes through the heat-resistant three-dimensional porous body 116. Moisture is absorbed by the heat resistant three-dimensional porous body 116. As described above, the reformed gas that passes through the heat-resistant three-dimensional porous body 116 is a relatively wet gas because it is generated by the steam reforming reaction. Therefore, most of the water contained in the air-fuel mixture is absorbed by the heat resistant three-dimensional porous body 116. In addition, since the combustion chamber 102 in which the combustion tube 114 is disposed has a high temperature of about 200 to 800 [° C.], the heat-resistant three-dimensional porous body 116 is heated by the radiant heat, and the absorbed moisture is 200 [° C. ] It evaporates.

  The air-fuel mixture from which moisture has been removed is then ignited by the ignition electrode 120 and burned. Even when the air-fuel mixture containing the reformed gas is burned by the combustion burner, the flow of the combustion exhaust gas is the same as described above, and the description thereof is omitted.

  In this way, the heating fuel, more precisely, the heating fuel introduction portion 110 for introducing the reformed gas, and the heating fuel is disposed downstream of the heating fuel introduction portion 110 in the flow of the heating fuel and included in the heating fuel. A water-absorbing part that absorbs moisture, specifically, a heat-resistant three-dimensional porous body 116, and an ignition electrode 120 that is disposed downstream of the heat-resistant three-dimensional porous body 116 and burns heating fuel when ignited Therefore, most of the water contained in the heating fuel is absorbed by the heat-resistant three-dimensional porous body 116 and does not contact the ignition electrode 120. Thereby, misfire caused by supplying the fuel for heating containing a lot of moisture to the combustion burner can be prevented without changing the direction of the combustion burner 100, and stable combustion can be performed.

  In addition, since the heat-resistant three-dimensional porous body 116 is configured to be made of either a foam metal or a ceramic porous body, the heating fuel containing moisture is supplied to the combustion burner while having a simple configuration. Can prevent misfire caused by the occurrence of stable combustion.

  Further, since the heat-resistant three-dimensional porous body 116 is configured to be disposed inside the combustion tube 114, the combustion tube 114 can be disposed in an arbitrary direction, and thus the degree of freedom in the directionality of the combustion tube 114 is increased. Can be increased.

  As described above, in the embodiment of the present invention, the reforming catalyst (90) that generates the reformed gas to be supplied to the fuel cell (10) by reacting the reforming fuel and water vapor is heated. In the combustion burner for the reformer of the fuel cell (combustion burner 100), an introduction part (heating fuel introduction part 110) for introducing the heating fuel and a downstream of the introduction part in the flow of the heating fuel are disposed. A water absorption part (heat-resistant three-dimensional porous body 116) that absorbs moisture contained in the heating fuel, and an ignition part (ignition) that is disposed downstream of the water absorption part and burns the heating fuel when ignited Electrode 120).

  Moreover, the said water absorption part was comprised so that it might consist of a heat resistant three-dimensional porous body (116).

  The heat-resistant three-dimensional porous body (116) is composed of either a foam metal or a ceramic porous body.

  In the above description, the fuel cell 10 is a solid polymer type. However, the present invention is not limited to this, and other types may be used.

  In addition, although city gas is used as the reforming fuel, LP gas or the like may be used.

It is the schematic for demonstrating the reformer which has the combustion burner for reformers of the fuel cell which concerns on the Example of this invention. It is explanatory sectional drawing which shows the cross section of the reformer of the reformer shown in FIG. FIG. 3 is an enlarged explanatory cross-sectional view showing an enlarged cross section near a combustion burner shown in FIG. 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Fuel cell, 90 Reforming catalyst, 100 Combustion burner (reformer combustion burner), 110 Heating fuel introduction part (introduction part), 116 Heat-resistant three-dimensional porous body (water absorption part), 120 Ignition electrode (ignition part)

Claims (3)

  Introducing a heating fuel in a combustion burner for a reformer of a fuel cell that heats a reforming catalyst that reacts the reforming fuel with water vapor to generate a reformed gas to be supplied to the fuel cell; A water absorption part disposed downstream of the introduction part in the flow of the heating fuel and absorbing moisture contained in the heating fuel; and a fuel absorption part disposed downstream of the water absorption part and ignited. A combustion burner for a reformer of a fuel cell, comprising: an igniter for burning the fuel.   2. The combustion burner for a reformer of a fuel cell according to claim 1, wherein the water absorption part is made of a heat-resistant three-dimensional porous body.   3. The combustion burner for a reformer of a fuel cell according to claim 2, wherein the heat-resistant three-dimensional porous body is made of one of a foam metal and a ceramic porous body.

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