JP2006292334A - Catalyst bed heating device, device for producing gas containing hydrogen gas, and fuel cell system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliable gas production device for producing gas containing hydrogen which stably generates discharge. <P>SOLUTION: The gas production device comprises a catalyst bed heating device in which a receiving part 8 having an inwardly concave inner surface is provided in an earth part 3 for receiving spark discharge 6 from an electrode part 1, and the tip portion of the electrode part 1 is arranged oppositely to the inside of the receiving part 8 so that the distance from the tip portion of the electrode part 1 to the inner surface of the receiving part is substantially constant. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a catalyst layer temperature increasing device, a gas production device including hydrogen provided with the same, and a fuel cell system provided with the same, such as a household polymer electrolyte fuel cell.

  17 and 18 are views showing an example of a conventionally proposed ignition device mounted on an internal combustion engine (see Patent Document 1 below), FIG. 17 is a front view of an ignition torch, and FIG. 18 is an enlarged A of FIG. It is an arrow view.

  In this ignition torch, an insulator 103 is attached to the metal shell 102, a terminal 104 is attached to the upper end side of the insulator 103, and a center electrode 105 is attached to the lower end side, and both are electrically connected.

  Further, an L-shaped outer electrode 106 is provided on the lower end side of the metal shell 102, and the horizontal side portion 106a of the outer electrode 106 is opposed to the center electrode 105 while maintaining a predetermined interval on the plug axis line. Discharge is performed between the opposing surfaces of the electrodes 105 and 106.

 As shown in FIG. 18, in order to facilitate discharge, a U-shaped groove 107 is formed on the surface of the center electrode 105 facing the outer electrode 106, and a through hole 108 is formed on the surface of the outer electrode 106 facing the center electrode 105. Each is formed. The width and length of the groove 107 are substantially the same as the width and length of the through hole 108, and a circular opening 109 larger than the width of the through hole 108 is provided on the back side of the through hole 108. .

 If an ignition torch in which this electrode part (high voltage part) and the earth part are integrated is built in a reformer of a fuel cell system, the following problems occur.

 As will be described later, the reformer of the fuel cell system is supplied with liquid fuel, water vapor, and reaction air, and a reforming reaction occurs in the presence of a combustion catalyst (reforming catalyst), which is about 40% to 50%. The reformed gas containing hydrogen is generated.

 In order to raise the temperature of the combustion catalyst layer to a predetermined temperature, a catalyst layer temperature raising device is provided in the reformer. An ignition torch and a flame holder are installed in the catalyst layer temperature raising device, and fuel such as city gas or LPG and air or oxygen are introduced, and the ignition torch is discharged to ignite the fuel in the flame holder.

 After raising the temperature of the combustion catalyst to about 500 ° C. to 800 ° C. by the combustion heat, the combustion catalyst layer is heated to a predetermined temperature by transferring the combustion field to the combustion catalyst layer and burning it. .

 When the above-mentioned ignition torch is installed in the catalyst layer temperature raising device, the distance between the center electrode 105 (electrode part) and the outer electrode 106 (earth part) is short as shown in FIG. If the conductive material 110 such as carbon or moisture that adheres adheres to the periphery of the center electrode 105 or the external electrode 106, there is a problem that the short circuit easily occurs and the function of the ignition torch is hindered.

 In order to make a structure in which short-circuiting due to adhesion of the conductive material does not easily occur, a catalyst layer temperature increasing device as shown in FIG. 20 has been studied. In this catalyst layer temperature raising device 111, a plug main body 113 is attached and fixed in a horizontal direction to a side wall of a casing 112 of a reformer by an attaching means 114 having electrical insulation such as a ceramic screw.

 At the tip of the plug body 113, an electrode portion 116 is provided in which a portion other than the discharge portion is covered with an insulator 115. A grounding part 117 separate from the electrode part 116 is installed at a location away from the electrode part 116.

 Below the plug body 113, a flame holder 119 having a cylindrical shape and having a large number of holes 118 formed on the upper side of the peripheral wall is installed. The flame holder 119 includes a gas such as city gas or LPG. A fuel supply pipe 121 that supplies fuel 120 and an air supply pipe 123 that supplies air (or oxygen) 122 are connected.

 A combustion catalyst layer 124 is installed above the plug body 113, and a combustion chamber 125 is formed between the combustion catalyst layer 124 and the flame holder 119. Accordingly, the electrode portion 116 and the ground portion 117 are disposed in the combustion chamber 125.

When the gas fuel 120 and the air 122 are supplied into the flame holder 119 at a predetermined ratio, they are mixed, and the mixed gas 126 is jetted into the combustion chamber 125 from each hole 118 of the flame holder 119. On the other hand, by applying a high voltage to the electrode part 116, a firework discharge 127 is generated between the electrode part 116 and the ground part 117, thereby igniting the mixed gas 126. The gas fuel 120 that is sequentially supplied by this ignition burns in the combustion chamber 125, and the combustion catalyst layer 124 is heated by the combustion heat.
Japanese Patent Laid-Open No. 7-135066

  The catalyst layer heating device 111 has a structure in which the electrode portion 116 and the ground portion 117 are separated from each other independently, so that a short circuit due to the adhesion of the conductive material is unlikely to occur, but the casing 112 is heated by the combustion in the combustion chamber 125. It may be deformed.

  FIG. 21 is a diagram illustrating a case where the casing 112 is deformed. Since the plug body 113 is attached to the casing 112, the distance L between the electrode portion 116 and the ground portion 117 may change with the deformation of the casing 112, which makes it difficult to discharge, resulting in poor ignition performance. It becomes stable. In such a state, eventually, the reforming reaction is not stably performed, and the production of gas containing hydrogen and the reliability of the fuel cell system are lowered.

  An object of the present invention is to provide a highly reliable catalyst layer temperature increasing device, a gas production device containing hydrogen, and a fuel cell system in which the disadvantages of the prior art are solved and fireworks discharge is always stably performed. There is a thing in that.

In order to achieve the above object, a first means of the present invention includes a casing having a combustion chamber, an electrode portion attached to a member facing the combustion chamber and disposed in the combustion chamber, and disposed in the combustion chamber. An earth portion provided apart from the electrode portion; means for supplying fuel and air or oxygen into the combustion chamber; and a catalyst layer disposed in the combustion chamber;
A high voltage is applied to the electrode portion to generate a pyrotechnic discharge between the ground portion and the supplied fuel to ignite and burn, and the catalyst layer is heated by the combustion heat to raise the catalyst layer. It is intended for temperature devices.

  And in order to receive the fireworks discharge from the electrode portion, a receiving portion having a concave inner surface toward the inside is provided in the ground portion, and the tip portion of the electrode portion is arranged so as to face the inside of the receiving portion, The distance from the tip part of the electrode part to each inner surface of the receiving part is made substantially the same.

  According to a second means of the present invention, in the first means, the receiving portion is provided with a large number of edge portions serving as discharge points.

  According to a third means of the present invention, in the second means, the edge portion is formed by a large number of through holes, slits or cuts provided in the receiving portion.

  According to a fourth means of the present invention, in the first means, a plurality of protrusions are provided on the inner surface of the receiving part, and the distances from the tip part of the electrode part to the protrusions are substantially the same. The person who is characterized by.

  According to a fifth means of the present invention, in the catalyst layer temperature increasing device, a planar receiving portion that receives fireworks discharge from the electrode portion is provided in the ground portion, and on the side of the receiving portion that faces the electrode portion, A plurality of protrusions are provided so that the distance from the tip of the electrode portion is substantially the same.

  According to a sixth means of the present invention, in the catalyst layer temperature increasing device, a receiving part for receiving fireworks discharge from the electrode part is provided in the ground part, and the receiving part is arranged radially toward the electrode part side, and A plurality of protrusions having substantially the same distance from the tip of the electrode part are provided.

  According to a seventh means of the present invention, in the catalyst layer temperature increasing device, a receiving part for receiving fireworks discharge from the electrode part is provided in the ground part, and the receiving part has a plurality of step parts toward the electrode part side. However, the distance from the tip of the electrode portion to each stepped portion is substantially the same.

  The eighth means of the present invention is characterized in that, in the catalyst layer temperature increasing device, a plurality of protrusions having substantially the same distance from the tip of the ground portion are provided at the tip of the electrode portion. .

  According to a ninth means of the present invention, in the first to eighth means, the member facing the combustion chamber is a casing.

  The tenth means of the present invention comprises a catalyst layer temperature raising device and means for supplying a raw material gas for producing a gas containing hydrogen to the catalyst layer temperature raising device, In the apparatus for producing a gas containing hydrogen by a reforming reaction by raising the temperature to a predetermined temperature and supplying the raw material gas to the catalyst layer, the catalyst layer raising device comprises the first to ninth means. This is a catalyst layer temperature raising apparatus.

  The eleventh means of the present invention comprises a fuel cell having an apparatus for producing a gas containing hydrogen, an anode for introducing a gas containing hydrogen produced by the gas producing apparatus, and a cathode for introducing air or oxygen. In the fuel cell system, the gas manufacturing apparatus is the gas manufacturing apparatus of the tenth means.

  As described above, the present invention has a structure in which the electrode part and the ground part are separated from each other independently, so that even if there is adhesion of a conductive substance such as carbon or moisture generated during combustion, the two electrodes are short-circuited. It becomes a difficult device.

  In addition, even when the electrode part is tilted due to thermal deformation accompanying temperature changes in the combustion chamber, the distance between the electrode part and the ground part can be maintained within the dischargeable range, so that the discharge performance can be stabilized and ignition can be ensured. Can be done.

  For this reason, it is possible to provide a catalyst layer temperature raising device, a gas production device, and a fuel cell system that are excellent in operation reliability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a catalyst layer temperature raising device provided with an ignition torch in the reformer according to the first embodiment, FIG. 2 is an enlarged front view of an earthing portion used in the temperature raising device, and FIG. FIG. 4 is a system diagram of a polymer electrolyte fuel cell system equipped with the reformer.

  First, the entire system of the partially oxidized steam reforming solid polymer fuel cell system according to the embodiment of the present invention will be described with reference to FIG.

  Liquid fuel 52 such as liquefied petroleum gas, naphtha, kerosene, light oil, dimethyl ether or the like stored in the fuel tank 51 is supplied from the fuel supply pipe 53 to the reformer 56 through the fuel supply pump 54 and the fuel cutoff valve 55. The

  The liquid fuel 52 supplied to the reformer 56 undergoes the following reforming reaction with the simultaneously supplied water vapor 57 and reaction air 58 (in the case of an autothermal reformer), thereby reforming the hydrogen rich. Generate gas.

_{C m H n + (2m +} 1 / 2n) O 2 ⇒CO 2 + 1 / 2H 2 O [ combustion reaction]
_{C m H (2m + 2)} + mH 2 O⇔mCO + (2m + 1) H 2 [ reforming reaction]
CO + H ₂ O => CO ₂ + H ₂ [CO conversion reaction]

An example of the composition of the generated reformed gas is as follows.
_{H 2: 40% ~50% CO} 2: 10% ~25%
CO: 5% to 15% N ₂ : 25% to 35%
CH _4: 0.5% ~3%
Thus, the reformed gas contains CO (carbon monoxide), and if this reformed gas is supplied as it is to the anode 60 of the fuel cell 59, it will adversely affect the noble metal catalyst supported on the electrode.

  Therefore, a CO conversion reaction with the remaining steam is performed on the catalyst of the CO converter 61, and further, after being mixed with the selective oxidation air 62, a selective oxidation reaction of CO is performed on the catalyst of the CO selective oxidizer 63 to obtain an allowable concentration (about Reduce the CO concentration to 10 ppm or less).

  This low CO concentration reformed gas is supplied to the anode 60 of the fuel cell 59, while the cathode 64 is supplied with the cathode air 65, and the electrochemical reaction is performed between the anode 60 and the cathode 64 via the polymer electrolyte membrane 66. A reaction occurs and generates power. Since the electrolytic membrane 66 generates heat with an electrochemical reaction, cooling water 67 is supplied, whereby hot water 68 is obtained and hot water is supplied to a facility or the like.

  The amount of hydrogen reacted at the anode 60 is about 70% to 80% of the hydrogen in the supplied reformed gas, and the gas containing unreacted hydrogen is discharged from the fuel cell 59. The discharged anode exhaust gas 69 is introduced into the combustor 70, combusted by the supply of combustion air 71, and the generated combustion gas 72 is discharged from the combustor 70.

  Water 73 and reaction air 58 are supplied to the combustor 70, and water 73 is supplied as steam 57 to the reformer 56 by heat generated in the combustor 70, while the reaction air 58 is preheated. Then, it is supplied to the reformer 56 and contributes to improvement of power generation efficiency.

  Unreacted cathode air 65 supplied to the fuel cell 59 is discharged from the fuel cell 59 as exhaust air 74. The electric power generated in the fuel cell 59 is taken out as AC power 76 by the inverter 75 and sent to the power supply destination.

  A catalyst layer temperature raising device 77 is installed at a predetermined position in the reformer 56, and its schematic configuration will be described with reference to FIGS.

  As shown in FIG. 1, a plug body 5 of an ignition torch is fixed to one side wall of a casing 10 in a cantilever manner in the horizontal direction by an attachment means 7 having electrical insulation properties such as a ceramic screw.

  On the tip end side of the plug main body 5, an electrode portion 1 is provided in which a portion other than the discharge portion is covered with an insulator 2. The grounding portion 3 is vertically provided in a separate position from the electrode portion 1 at a distant position.

  The earth part 3 is made of a metal having excellent heat resistance such as stainless steel, incoil, inconel, etc., and is made up of a receiving part 8 that receives a fireworks discharge facing the electrode 1 and a support part 4 that supports the receiving part 8. Has been.

  In the case of the present embodiment, the receiving portion 8 is formed in a bowl shape (hemispherical shape) having a concave curved surface on the inside, and the tip end portion of the electrode portion 1 is disposed so as to face the inside of the receiving portion 8. The radius of curvature of the receiving portion 8, the height of the ground portion 3 and the installation position are set so that the inner peripheral curved surface of the portion 8 is substantially the same distance from the tip of the electrode portion 1. In the case of this embodiment, the distance between the tip of the electrode part 1 and the inner surface of the receiving part 8 is adjusted to about 0.3 cm to 1.0 cm.

  In the case of this embodiment, as shown in FIGS. 1 and 2, a large number of through holes 14 are formed over substantially the entire receiving portion 8. Thus, by making the receiving part 8 into a perforated plate, the peripheral edge part of each through hole 14 becomes a discharge point, so that the stability of discharge can be ensured. In the present embodiment, the through holes 14 are formed, but instead, a number of vertical, horizontal, or diagonal slits or cuts may be formed.

  As described above, the ignition torch includes the plug body 5 having the electrode portion 1 and the ground portion 3 which is separate from the plug body 5. A flame holder 11 is installed below the ignition torch, and a combustion catalyst layer 12 is installed above the ignition torch. A space between the flame holder 11 and the combustion catalyst layer 12 is a combustion chamber 9, and the ignition torch is installed in the combustion chamber 9.

  As shown in FIG. 3, the flame holder 11 has a cylindrical shape or a rectangular tube shape, the openings at both ends thereof are closed, and a plurality of rows of holes 13 penetrating the upper portion are provided. A fuel supply pipe 16 that supplies a gas fuel 15 such as city gas or LPG and an air supply pipe 18 that supplies air (or oxygen) 17 are connected to one end of the flame holder 11.

  The gas fuel 15 and air (or oxygen) supplied at a predetermined rate into the flame holder 11 by the supply pipes 16 and 18 are immediately mixed, and the mixed gas 19 is injected into the combustion chamber 9 through the holes 13.

  On the other hand, a high voltage of, for example, about 15 kV is applied to the electrode portion 1 of the ignition torch, whereby a fireworks discharge 6 is generated between the receiving portion 8 of the ground portion 3 and the mixed gas 19 is ignited. The mixed gas 19 sequentially supplied by this ignition burns, and after the combustion catalyst layer 12 is heated to 500 ° C. to 800 ° C. by the combustion heat, the combustion field is moved to the combustion catalyst layer 12 and burned. The combustion catalyst layer 12 is further heated.

  After raising the combustion catalyst layer 12 to a predetermined temperature condition in this way, liquid fuel 52, water vapor 57, reaction air 58, etc. are supplied to the reformer 56 as shown in FIG. To produce a reformed gas containing hydrogen.

  When the reformed gas is produced continuously for a long time, the temperature inside the combustion chamber 9 gradually rises, and some distortion (deformation) 21 occurs in the vicinity of the attachment means 7 of the casing 10 due to the thermal effect thereof.

  Therefore, even when the electrode portion 1 is tilted upward (or downward) from the state of FIG. 1 as shown in FIG. 5, since the bowl-shaped (hemispherical) receiving portion 8 is installed, the discharge with the earth portion 3 is performed. The distance does not change substantially or is small even if it changes. Therefore, stable fireworks discharge 6 can always be secured. Moreover, although it is the same also in other embodiment, a wide discharge area can be ensured by the receiving part 8, Therefore, discharge is easy and stable.

  FIG. 6 is a schematic configuration diagram of a catalyst layer temperature raising apparatus according to the second embodiment of the present invention. The difference from the first embodiment is that the receiving portion 8 in which the hole 14 is not formed is used. Thus, it has been confirmed that even if the receiving portion 8 without the hole 14 is used, a discharge performance with no influence is obtained.

  Further, a convex portion that protrudes toward the electrode portion 1 side is formed by pressing or the like on the inner surface of the receiving portion 8 in which the hole 14 is not formed, or a large number of cuts are formed on the receiving surface 8 toward the electrode portion 1 side. An erecting piece can be provided to stabilize the discharge.

  7 and 8 are schematic configuration diagrams of a catalyst layer temperature raising apparatus according to the third embodiment of the present invention. The difference from the second embodiment is that a large number of protrusions 20a to 20e having substantially the same length are erected along the inner surface of the receiving portion 8 on the inner surface of the bowl-shaped (hemispherical) receiving portion 8. The tip portions of the protrusions 20a to 20e face the electrode portion 1.

  Therefore, the distance between the tip of the electrode 1 and the tip of each of the protrusions 20a to 20e is kept equal. Therefore, as shown in FIG. 8, when the distortion (deformation) 21 occurs in the vicinity of the attachment means 7 of the casing 10 and the electrode part 1 is inclined upward (or downward), the closest protrusion among the protrusions 20a to 20e. A fireworks discharge 6 is generated toward the portion 20b.

  9 and 10 are schematic configuration diagrams of a catalyst layer temperature raising apparatus according to the fourth embodiment of the present invention. In the case of the present embodiment, the receiving portion 8 is flat, and a large number of protruding portions 20a to 20e protruding toward the electrode portion 1 side are provided on one side thereof. As shown in FIG. 9, the protrusions 20a to 20e have the shortest central protrusion 20c closest to the electrode part 1 in the horizontal state, and then gradually become longer as they go upward and downward. The lengths, installation positions, and the like of the protrusions 20a to 20e are set so that the distances are substantially the same as viewed from the tip of the electrode unit 1.

  Therefore, as shown in FIG. 10, when a distortion (deformation) 21 occurs in the vicinity of the attachment portion 7 of the casing 10 and the electrode portion 1 is inclined upward (or downward), the closest protrusion of the protrusions 20a to 20e. A fireworks discharge 6 is generated toward the portion 20b. In this embodiment, since the receiving part 8 is comprised with a flat plate, manufacture is easy.

  FIG. 11 and FIG. 12 are schematic configuration diagrams of a catalyst layer temperature raising apparatus according to the fifth embodiment of the present invention. In the case of the present embodiment, a large number of protrusions 20a to 20e extend radially from one portion of the receiving portion 8 toward the electrode portion 1 side. As shown in FIG. 11, the protrusions 20a to 20e have the shortest central protrusion 20c closest to the electrode part 1 in the horizontal state, and then gradually become longer in the upward and downward directions. The lengths and directions of the protrusions 20a to 20e are set so that the distances are substantially the same as viewed from the tip of the electrode unit 1.

  Therefore, as shown in FIG. 12, when the distortion (deformation) 21 occurs in the vicinity of the attachment portion 7 of the casing 10 and the electrode portion 1 is inclined upward (or downward), the closest protrusion portion among the protrusion portions 20a to 20e. Fireworks discharge 6 is generated toward 20b.

  In the case of this embodiment, since all the protrusions 20a to 20e are welded and fixed together at one place, the welding work amount of the protrusions 20a to 20e can be reduced.

  In the third to fifth embodiments, the protrusions 20a to 20e may be plate-shaped or pin-shaped. In these embodiments, the support part 4 and the receiving part 8 may be one continuous plate.

  13 and 14 are schematic configuration diagrams of a catalyst layer temperature raising apparatus according to a sixth embodiment of the present invention. In the case of the present embodiment, the receiving portion 8 has a solid shape, and the side facing the electrode portion 1 is recessed so that the central portion is lowered, thereby a plurality of step portions (edge portions) 22a to 22f. Is formed.

  As shown in FIG. 13, other step portions 22a, 22b, 22e, and 22f are provided in a stepped shape upward and downward from the central step portions 22c and 22d closest to the electrode portion 1 in the horizontal state. The heights and positions of the step portions 22a to 22f are set so that the step portions 22a to 22f have substantially the same distance when viewed from the tip of the electrode portion 1 as indicated by dotted lines.

Therefore, as shown in FIG. 14, distortion (deformation) occurs near the attachment portion 7 of the casing 10.
21 occurs and the electrode part 1 is tilted upward (or downward), the fireworks discharge 6 is generated toward the closest step part 22b among the step parts 22a to 22f.

  In the present embodiment, the solid receiving portion 8 is used. However, the plate receiving portion 8 in which the step portions 22a to 22f are formed so as to be substantially the same distance when viewed from the tip portion of the electrode portion 1 is used. You can also.

  15 and 16 are schematic configuration diagrams of a catalyst layer temperature raising apparatus according to a seventh embodiment of the present invention. In the case of this embodiment, the ground part 3 has a pin shape and is erected in the vertical direction. On the other hand, a plurality of pin-like or flat plate-like protrusions 23a and 23b are radially arranged at the tip of the electrode part 1 toward the ground part 3 side.

  As shown in FIG. 15, the protrusions 23 a and 23 b are provided so as to have substantially the same distance when viewed from the tip of the ground 3. Therefore, as shown in FIG. 16, when distortion (deformation) 21 occurs near the attachment portion 7 of the casing 10 and the electrode portion 1 is inclined upward (or downward), the closest protrusion of the protrusions 23 a and 23 b. A fireworks discharge 6 is generated between 23b and the ground portion 3.

  Although the case where the temperature of the combustion catalyst layer is raised has been described in the above embodiment, the present invention is not limited to this, and can be applied to the temperature rise of other catalyst layers.

  Moreover, although the said embodiment demonstrated the case where hydrogen containing gas was used for a fuel cell system, this invention is not limited to this, It is applicable also to another technical field.

It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation | movement which concerns on the 1st Embodiment of this invention. It is an enlarged front view of the earthing part used for the embodiment. It is an expansion perspective view of the flame holder used for the embodiment. 1 is a system diagram of a fuel cell system according to an embodiment of the present invention. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus which concerns on the 1st Embodiment of this invention. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation | movement which concerns on the 2nd Embodiment of this invention. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation | movement which concerns on the 3rd Embodiment of this invention. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation | movement which concerns on the 4th Embodiment of this invention. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation which concerns on the 5th Embodiment of this invention. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation which concerns on the 6th Embodiment of this invention. It is a schematic configuration diagram showing a state where the casing is distorted by the operation of the catalyst layer temperature raising apparatus. It is a schematic block diagram of the catalyst layer temperature rising apparatus before the operation which concerns on the 7th Embodiment of this invention. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus. It is a front view of the ignition plug for internal combustion engines proposed conventionally. It is an enlarged arrow A view of FIG. It is a partially expanded front view which shows the state which the electroconductive substance adhered to the center electrode and outer electrode of the spark plug. It is a schematic block diagram before the operation | movement of the catalyst layer temperature rising apparatus examined conventionally. It is a schematic block diagram which shows the state at the time of producing a distortion in a casing by the driving | operation of the catalyst layer temperature rising apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1: Electrode part, 2: Insulator, 3: Ground part, 4: Support part, 5: Plug main body, 6: Spark discharge, 7: Attachment means, 8: Receiving part, 9: Combustion chamber, 10: Casing, 11 : Flame holder, 12: Combustion catalyst layer, 13: Hole, 14: Through hole, 15: Gas fuel, 16: Fuel supply pipe, 17: Air, 18: Air supply pipe, 19: Mixed gas, 20a to 20e: Projection, 21: Strain, 22a-22e: Step, 23a, 23b: Projection, 51: Fuel tank, 52: Liquid fuel, 53: Fuel supply pipe, 54: Fuel supply pump, 55: Fuel cutoff valve, 56 : Reformer, 57: steam, 58: air for reaction, 59: fuel cell, 60: anode, 61: CO converter, 62: selective oxidation air, 63: CO selective oxidizer, 64: cathode, 65: cathode Air, 66: Electrolytic layer, 67: Cooling water, 68: Hot water, 6 : Anode exhaust gas, 70: combustor 71: combustion air, 72: combustion gases 73: water, 74: exhaust air, 75: inverter, 76: AC power, 77: catalyst SoNoboru temperature apparatus.

Claims (11)

A casing having a combustion chamber; an electrode portion mounted on a member facing the combustion chamber and disposed in the combustion chamber; a grounding portion disposed in the combustion chamber and provided apart from the electrode portion; Means for supplying fuel and air or oxygen toward the electrode part and the ground part, and a catalyst layer disposed in the combustion chamber,
A high voltage is applied to the electrode portion to generate a pyrotechnic discharge between the ground portion and the supplied fuel to ignite and burn, and the catalyst layer is heated by the combustion heat to raise the catalyst layer. In the temperature device,
In order to receive the firework discharge from the electrode part, a receiving part having a concave inner surface is provided in the ground part, and the tip part of the electrode part is arranged so as to face the inner side of the receiving part, The catalyst layer temperature increasing device characterized in that the distance from the front end of each part to each inner surface of the receiving part is substantially the same.   2. The catalyst layer heating apparatus according to claim 1, wherein the receiving part is provided with a large number of edge portions serving as discharge points.   3. The catalyst layer heating apparatus according to claim 2, wherein the edge portion is formed by a large number of through holes, slits or cuts provided in the receiving portion.   2. The catalyst layer heating apparatus according to claim 1, wherein a plurality of protrusions are provided on the inner surface of the receiving part, and the distances from the tip part of the electrode part to the protrusions are substantially the same. Temperature rising device. A casing having a combustion chamber; an electrode portion mounted on a member facing the combustion chamber and disposed in the combustion chamber; a grounding portion disposed in the combustion chamber and provided apart from the electrode portion; Means for supplying fuel and air or oxygen toward the electrode part and the ground part, and a catalyst layer disposed in the combustion chamber,
A catalyst layer that applies a high voltage to the electrode portion to generate a firework discharge between the electrode portion, ignites the supplied fuel, burns the fuel, and heats the catalyst layer with the combustion heat In the temperature riser,
A flat receiving part for receiving fireworks discharge from the electrode part is provided in the ground part, and the distance from the tip part of the electrode part is substantially the same on the side of the receiving part facing the electrode part. A catalyst layer temperature increasing device, comprising a plurality of protrusions. A casing having a combustion chamber; an electrode portion mounted on a member facing the combustion chamber and disposed in the combustion chamber; a grounding portion disposed in the combustion chamber and provided apart from the electrode portion; Means for supplying fuel and air or oxygen toward the electrode part and the ground part, and a catalyst layer disposed in the combustion chamber,
A catalyst that applies a high voltage to the electrode portion to generate a firework discharge between the electrode portion, ignites the supplied fuel, burns the fuel, and heats the catalyst layer with the combustion heat In the layer heating device,
A receiving part for receiving fireworks discharge from the electrode part is provided in the ground part, and the receiving part is arranged radially toward the electrode part side, and has a plurality of protrusions having substantially the same distance from the tip part of the electrode part. A catalyst layer heating apparatus characterized by the above. A casing having a combustion chamber; an electrode portion mounted on a member facing the combustion chamber and disposed in the combustion chamber; a grounding portion disposed in the combustion chamber and provided apart from the electrode portion; Means for supplying fuel and air or oxygen toward the electrode and the ground portion, and a catalyst layer disposed in the combustion chamber,
A high voltage is applied to the electrode part to generate a firework discharge between the electrode part, the supplied fuel is ignited to burn the fuel, and the temperature of the catalyst layer is increased by the combustion heat. In the catalyst layer heating device,
A receiving part for receiving fireworks discharge from the electrode part is provided in the ground part, and the receiving part has a plurality of step parts toward the electrode part side, and the distance from the tip part of the electrode part to each step part. Are substantially the same, a catalyst layer temperature increasing device. A casing having a combustion chamber; an electrode portion mounted on a member facing the combustion chamber and disposed in the combustion chamber; a grounding portion disposed in the combustion chamber and provided apart from the electrode portion; Means for supplying fuel and air or oxygen toward the electrode part and the ground part, and a catalyst layer disposed in the combustion chamber,
A high voltage is applied to the electrode part to generate a firework discharge between the electrode part, ignite the supplied fuel, burn the fuel, and heat the catalyst layer with the combustion heat In the catalyst layer heating device,
A catalyst layer temperature increasing device, wherein a plurality of protrusions having substantially the same distance from the tip of the ground part are provided at the tip of the electrode part.   9. The catalyst layer heating apparatus according to claim 1, wherein the member facing the combustion chamber is a casing. A catalyst layer heating device, and means for supplying a raw material gas for producing a gas containing hydrogen to the catalyst layer in the catalyst layer heating device,
In the apparatus for heating the catalyst layer to a predetermined temperature with the catalyst layer heating device, supplying the raw material gas to the catalyst layer and producing a gas containing hydrogen by a reforming reaction,
A gas production apparatus containing hydrogen, wherein the catalyst layer temperature increasing device is the catalyst layer temperature increasing device according to any one of claims 1 to 9. In a fuel cell system comprising a gas production device for producing a gas containing hydrogen, and a fuel cell having an anode for introducing a gas containing hydrogen produced by the gas production device and a cathode for introducing air or oxygen,
The fuel cell system according to claim 10, wherein the gas production device is the gas production device according to claim 10.

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