JP2015174808A - reformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reformer that can suppress a decrease in reforming efficiency associated with time lapse.SOLUTION: A reformer is provided with: heating distribution changing means A that can change heating distribution and heats a reforming catalyst layer 6c by a reforming burner 8 along a heating distribution changing direction, which is a direction where both ends 14e, 14e of a partition wall W are arranged side by side; and temperature distribution change detecting means D that detects a temperature distribution change, which is a change of temperature distribution, in a direction along the heating distribution changing direction in the reforming catalyst layer 6c, from proper temperature distribution. Control means C for controlling operation is configured to control the operation of the heating distribution changing means A so that when the temperature distribution change is detected by the temperature distribution change detecting means D, the temperature distribution detected by the temperature distribution change detecting means D approaches the proper temperature distribution.

Description

  In the present invention, a reforming section in which a reforming catalyst is charged and a combustion section that forms a combustion space therein are disposed in a state of being partitioned by partition walls capable of transferring heat, and the combustion fuel is burned. A reforming burner that burns in the space and heats the reforming catalyst layer of the reforming section is from one end of the both ends facing each other in the direction along the wall surface of the partition wall in the combustion section, It is provided to form a flame toward the other end, and in the reforming section, a hydrocarbon-based raw fuel is reformed by the action of the reforming catalyst, and hydrogen gas is a main component. The present invention relates to a reformer configured to generate a reformed gas.

This reformer reforms hydrocarbon-based raw fuel supplied in a mixed state with water vapor by the catalytic action of the reforming catalyst in the reforming section to generate reformed gas mainly composed of hydrogen gas. The generated reformed gas is used for a power generation reaction in a fuel cell, for example.
That is, the combustion fuel is burned in the combustion space by the reforming burner, so that heat is transferred from the combustion section to the reforming catalyst layer of the reforming section through the partition wall, and the reforming catalyst layer is reformed of the raw fuel. It is configured to heat so that quality treatment is possible.

  In such a reformer, the reforming burner is directed from one end side of both end portions facing each other in the direction along the wall surface of the partition wall to the other end portion side. Since it is provided so as to form a flame, the temperature distribution of the reforming catalyst layer tends to be biased in the direction in which both ends of the combustion section are aligned, that is, in the direction along the flame forming direction of the reforming burner. In order to increase the efficiency of converting raw fuel into hydrogen gas (hereinafter, sometimes referred to as reforming efficiency), the temperature distribution in the direction along the flame formation direction of the reforming burner in the reforming catalyst layer is reduced. It is desirable to do.

  Therefore, conventionally, for example, when the combustion section is configured using a cylindrical cylinder, the reforming burner is in a state where the injection direction of the combustion fuel is slightly inclined with respect to the axis of the cylinder The temperature distribution in the direction along the flame formation direction of the reforming burner in the reforming catalyst layer is provided on one end side of the cylinder and is made to flow in the combustion space while swirling the combustion gas. Some have been configured to be small (see, for example, Patent Document 1).

JP 2006-179365 A

By the way, the reforming catalyst is usually granular, and the granular reforming catalyst is filled in the reforming section, so the packing density distribution of the reforming catalyst in the reforming section may change with time. . When the packing density distribution of the reforming catalyst layer in the reforming section becomes large, the fluid is less likely to flow in the portion where the packing density in the reforming catalyst layer is higher. Therefore, the fluid flowing through the reforming catalyst layer (raw fuel and steam and The mixed fluid) will drift.
In addition, the catalytic action of the reforming catalyst deteriorates with time, and the deterioration rate varies depending on the site of the reforming catalyst layer, so that the degree of deterioration of the catalytic action in the reforming catalyst layer is also distributed.
Since the reforming reaction of the raw fuel is an endothermic reaction, with the passage of time, the packing density distribution of the reforming catalyst layer in the reforming section changes, and a drift occurs in the fluid flowing in the reforming catalyst layer. If the degradation of the reforming catalyst progresses and a distribution occurs in the degree of degradation of the catalytic action in the reforming catalyst layer, the temperature distribution in the direction along the flame formation direction of the reforming burner in the reforming catalyst layer becomes large. As a result, the reforming efficiency decreases.
Therefore, in the conventional reformer, the reforming efficiency decreases with the passage of time due to the temperature distribution in the direction along the flame formation direction of the reforming burner in the reforming catalyst layer becoming larger. There was a problem.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a reforming apparatus that can suppress a decrease in reforming efficiency with the passage of time.

The reformer according to the present invention is disposed in a state where a reforming section in which a reforming catalyst is charged and a combustion section that forms a combustion space therein are partitioned by heat transferable partition walls,
A reforming burner that burns combustion fuel in the combustion space and heats the reforming catalyst layer of the reforming unit has one of both end portions facing each other in the direction along the wall surface of the partition wall in the combustion unit. It is equipped to form a flame from the end side toward the other end side,
In the reforming section, a hydrocarbon-based raw fuel is reformed by the action of the reforming catalyst, and a reformed gas containing hydrogen gas as a main component is generated. ,
The first characteristic configuration is a heating distribution changing means capable of changing a heating distribution for heating the reforming catalyst layer by the reforming burner along a heating distribution changing direction in which both ends of the partition walls are arranged,
A temperature distribution change detecting means for detecting a temperature distribution change in which the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer has changed from an appropriate temperature distribution; and
When the temperature distribution change is detected by the temperature distribution change detection means, the control means for controlling the operation sets the heating distribution so that the temperature distribution detected by the temperature distribution change detection means approaches the appropriate temperature distribution. In order to change, the operation of the heating distribution changing means is controlled.

According to the above characteristic configuration, the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer (corresponding to the direction along the flame forming direction of the reforming burner) is appropriate by the temperature distribution change detection means. When a temperature distribution change that has changed from the temperature distribution is detected, the control means operates the heating distribution changing means to change the heating distribution so that the temperature distribution detected by the temperature distribution change detecting means approaches the appropriate temperature distribution. Is controlled.
In other words, as the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution with time, the reforming burner modifies the temperature distribution so that it approaches the appropriate temperature distribution. The heating distribution for heating the porous catalyst layer (hereinafter sometimes simply referred to as the heating distribution by the reforming burner) is changed.
Therefore, it is possible to provide a reformer that can suppress a decrease in reforming efficiency with time.

In addition to the first feature configuration, the second feature configuration is
The reformer burner has a flame hole for injecting the combustion fuel into the combustion space. The injection direction of the combustion fuel is in the direction along the heating distribution change direction and the heating distribution change direction. In a form that is different from the direction inclined to the side, or a form that is different along the heating distribution change direction, a plurality of positions are provided,
A fuel injection form changing means capable of changing a flame hole for injecting the combustion fuel among the plurality of flame holes is provided,
The heating distribution changing means includes the fuel ejection form changing means.

According to the above characteristic configuration, the fuel injection form changing means changes the flame hole for injecting the combustion fuel into a flame hole having a different injection direction of the combustion fuel or a flame hole having a different position in the heating distribution changing direction. Thus, the heating distribution by the reforming burner is changed along the heating distribution changing direction.
Therefore, the heating distribution by the reforming burner in the direction along the heating distribution change direction can be accurately changed, and the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer can be brought close to the appropriate temperature distribution. Therefore, it is possible to accurately suppress a reduction in reforming efficiency with time.

The third feature configuration is in addition to the second feature configuration,
The plurality of flame holes are arranged in a line along a flame hole alignment direction along a direction perpendicular to the alignment direction of the both end portions of the wall surface of the partition wall, and the combustion fuel is directed along the heating distribution changing direction. A plurality of direct-injection flame holes, and a plurality of the fuel-injection fuels arranged in a line along the flame-hole arrangement direction and injecting the combustion fuel in a direction inclined toward the partition wall with respect to the heating distribution change direction With an inclined jet flame hole,
As the fuel injection form changing means, the combustion from the direct injection flame hole row in which a plurality of the direct injection flame holes are arranged in a line and the inclined injection flame hole row in which the plurality of the inclined injection flame holes are arranged in a line And a fuel ejection switching means capable of intermittently ejecting the fuel.

According to the above characteristic configuration, the flame hole array for injecting the fuel for combustion by the fuel injection switching means includes a direct flame hole array in which a plurality of direct injection flame holes are arranged in a line, and a plurality of inclined ejection flame holes. By changing to the inclined ejection flame hole rows arranged in a line, the heating distribution by the reforming burner is changed along the heating distribution changing direction.
Further, since the flame hole alignment direction of each of the direct flame hole array and the inclined ejection flame hole array is a direction orthogonal to the alignment direction of both end portions of the wall surface of the partition wall, the heating distribution of the reforming catalyst layer is represented by the wall surface of the partition wall. While maintaining as uniform as possible in the direction orthogonal to the direction of arrangement of both end portions in FIG.
That is, when the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution with time, the temperature distribution in the reforming catalyst layer is changed to the alignment direction of both ends of the wall surface of the partition wall. Can be made as close as possible to the appropriate temperature distribution by making a precise change in the direction along the direction of changing the heating distribution, while making it as uniform as possible in the direction orthogonal to.
Accordingly, it is possible to further suppress the reduction in reforming efficiency with time.

The fourth feature configuration is in addition to the second feature configuration,
The plurality of flame holes are arranged in a line along a flame hole alignment direction along a direction perpendicular to the alignment direction of the both end portions of the wall surface of the partition wall, and the combustion fuel is directed along the heating distribution changing direction. A plurality of flame hole rows composed of a plurality of flame holes to be ejected are provided along the heating distribution change direction,
As the fuel injection mode changing means, there is provided a fuel injection switching means capable of intermittently injecting the combustion fuel from each of the plurality of flame hole arrays.

According to the above-described feature configuration, the fuel injection switching means changes the flame hole row for injecting the combustion fuel into a flame hole row having a different position in the direction along the heating distribution changing direction, thereby The heating distribution by the burner is changed along the heating distribution changing direction.
Since the flame hole alignment direction of each flame hole row is a direction orthogonal to the alignment direction of both ends of the wall surface of the partition wall, the heating distribution of the reforming catalyst layer is orthogonal to the alignment direction of both end portions of the wall surface of the partition wall. While maintaining as uniform as possible in the direction to perform, it is possible to accurately change in the heating distribution change direction.
That is, when the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution with time, the temperature distribution in the reforming catalyst layer is changed to the alignment direction of both ends of the wall surface of the partition wall. Can be made as close as possible to the appropriate temperature distribution by making a precise change in the direction along the direction of changing the heating distribution, while making it as uniform as possible in the direction orthogonal to.
Accordingly, it is possible to further suppress the reduction in reforming efficiency with time.

In addition to any one of the first to fourth feature configurations described above, the fifth feature configuration is
The temperature distribution change detection means is provided with a plurality of temperature detection means that are arranged side by side along the heating distribution change direction and detect the temperature of the reforming catalyst layer. .

According to the above characteristic configuration, the temperature of the reforming catalyst layer is detected by each of the plurality of temperature detection means provided side by side along the heating distribution change direction, and the detected temperature of each of the plurality of temperature detection means. Based on this, a temperature distribution change is detected.
That is, the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer can be finely detected by the plurality of temperature detecting means arranged along the heating distribution changing direction, so that the temperature distribution change is accurately detected. be able to.
As a result, when the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution with the passage of time, the temperature distribution is accurately modified so that the temperature distribution approaches the appropriate temperature distribution. The heating distribution by the quality burner is changed along the heating distribution changing direction.
Accordingly, it is possible to accurately suppress a decrease in reforming efficiency with time.

In addition to any one of the first to fourth feature configurations described above, the sixth feature configuration is
The temperature distribution change detection means includes a component concentration detection means for detecting the concentration of the specific component in the reformed gas generated in the reforming unit, and the specific component detected by the component concentration detection means This is because the temperature distribution change is detected based on the fact that the concentration of the liquid is out of the appropriate range.

According to the above characteristic configuration, the concentration of the specific component in the reformed gas generated in the reforming unit is detected by the component concentration detection means, and the concentration of the specific component detected by the component concentration detection means is in an appropriate range. On the basis of the deviation from the temperature, a change in temperature distribution is detected.
In other words, if the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution, the reforming efficiency decreases and the concentration of the specific component in the reformed gas changes. The temperature distribution change can be accurately detected based on the change in the concentration of the specific component in the gas.
As a result, when the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer changes from the appropriate temperature distribution with the passage of time, the temperature distribution is accurately modified so that the temperature distribution approaches the appropriate temperature distribution. The heating distribution by the quality burner is changed along the heating distribution changing direction.
Accordingly, it is possible to accurately suppress a decrease in reforming efficiency with time.

The block diagram which shows the whole structure of the reforming apparatus which concerns on 1st Embodiment. The longitudinal cross-sectional view of the reformer burner of the reformer according to the first embodiment The bottom view of the reformer burner of the reformer according to the first embodiment The figure which shows the change form of the heating pattern of the reforming burner which concerns on 1st Embodiment. The figure which shows the change form of the heating distribution by the reforming burner which concerns on 1st Embodiment. The block diagram which shows the whole structure of the reforming apparatus which concerns on 2nd Embodiment. Longitudinal sectional view of the reforming burner of the reforming apparatus according to the second embodiment The bottom view of the reforming burner of the reformer according to the second embodiment The figure which shows the change form of the heating pattern of the reforming burner which concerns on 2nd Embodiment. The figure which shows the change form of the heating distribution by the reforming burner which concerns on 2nd Embodiment. Block diagram of a hydrogen-containing gas generator equipped with a reformer Vertical section of a hydrogen-containing gas generator equipped with a reformer

Hereinafter, an embodiment in which the present invention is applied to a reformer R provided in a hydrogen-containing gas generator P for a fuel cell will be described with reference to the drawings.
[First Embodiment]
First, the first embodiment will be described.
As shown in FIGS. 11 and 12, the hydrogen-containing gas generator P is a hydrocarbon-based raw fuel gas (for example, a natural gas-based city such as 13A) supplied by the raw fuel blower 32 through the raw fuel supply passage 31. The desulfurization unit 1 for desulfurizing the gas), the steam generation unit J for generating steam by heating the raw water supplied by the reforming water pump 34 through the reforming water supply path 33, and the desulfurization unit 1 A reformer R that reforms the raw fuel gas using the steam generated in the steam generator J to generate a reformed gas mainly composed of hydrogen gas, and the reformer R supplies the reformed gas. The carbon monoxide gas in the reformed gas is converted to carbon dioxide gas using water vapor, and the carbon monoxide gas in the reformed gas supplied from the shift unit 4 is selectively oxidized. Selective oxidation unit 5 and operation control That is configured to include a operation control unit C or the like, and is configured to generate a low hydrogen-containing gas concentration of carbon monoxide.

The reformed gas generated by the hydrogen-containing gas generation device P is supplied to the fuel cell G through the fuel gas channel 35 as a fuel gas for power generation.
Since this fuel cell G is well known, a detailed description and illustration thereof will be omitted. For example, the fuel cell G is configured in a solid polymer type in which a plurality of cells each having a solid polymer membrane as an electrolyte layer are provided in a stacked state. The fuel gas is supplied from the hydrogen-containing gas generating device P to the fuel electrode of each cell through the fuel gas flow path 35, and the air is supplied from the reaction air blower 36 to the oxygen electrode of each cell, so that hydrogen and oxygen It is comprised so that electric power generation may be performed by the electrochemical reaction.

Next, each part of the hydrogen-containing gas generator P will be described.
As shown in FIG. 1, the reformer R includes a partition wall W capable of transferring heat between the reforming unit 6 in which the reforming catalyst 6 c is inserted and the combustion unit 7 that forms a combustion space 7 s therein. It is arranged and configured in a partitioned state.
Combustion gas fuel (which is an example of combustion fuel, for example, a city gas such as 13A) supplied by the combustion fuel blower 10 through the combustion fuel supply passage 9 is passed through the combustion air supply passage 11 to the combustion air blower 12. The reforming burner 8 that heats the reforming catalyst layer 6 c of the reforming unit 6 by burning in the combustion space 7 s with the combustion air supplied by the combustion air in the direction along the wall surface of the partition wall W in the combustion unit 7. It is equipped so that a flame may be formed toward the other end 14e from one end 14e of the opposite ends 14e, 14e.

Referring to FIG. 1, the reformer R will be described. The reformer R has a main body 13 in which a cylindrical inner cylinder 14 and an outer cylinder 15 are coaxially arranged, and both ends thereof are arranged. The inner cylinder 14 is closed with the upper plate 16 and the bottom plate 17, and further, the cylindrical radiation tube 18 is disposed inside the inner cylinder 14, the other end is separated from the bottom plate 17, and one end is fixed to the upper plate 16. 14 is provided coaxially.
An annular space formed between the inner cylinder 14 and the outer cylinder 15 is filled with the reforming catalyst 6c, and the reformer 6 is configured by the inner cylinder 14, the outer cylinder 15, the upper plate 16, the bottom plate 17, and the like. The
The space in the inner cylinder 14 is a combustion space 7s, and the combustion section 7 is constituted by the inner cylinder 14, the upper plate 16, the bottom plate 17, and the like, and the reforming burner 8 is supported by the upper plate 16. In the state, it is provided coaxially with the inner cylinder 14.
The inner cylinder 14 is configured to function as a partition wall W.

  In the state where the upper plate 16 communicates with the annular space between the outer cylinder 15 and the inner cylinder 14, the raw fuel gas inlet 19 communicates with the annular space between the inner cylinder 14 and the radiation cylinder 18. Each of the combustion gas outlets 21 is provided, and the reformed gas outlet 20 is provided on the bottom plate 17 so as to communicate with the annular space between the inner cylinder 14 and the outer cylinder 15.

The combustion fuel supply path 9 and the combustion air supply path 11 are connected to a mixer 22, and in the mixer 22, the combustion gas fuel from the combustion fuel supply path 9 and the combustion air supply path 11 are connected. Combustion air is mixed and the mixed gas is supplied to the reforming burner 8 through the mixed gas supply path 23.
Further, an offgas passage 24 for guiding offgas discharged from the fuel electrode of the fuel cell G in a state where hydrogen remains is connected to the mixer 22, and the offgas is supplied to the reforming burner 8 as combustion fuel. It is configured as follows.

The apparatus main body 13 is arranged with the upper plate 16 facing upward.
Then, the reforming burner 8 burns the mixture of the combustion gas fuel from the combustion fuel supply passage 9 and the combustion air from the combustion air supply passage 11 so that the combustion gas flows in the radiation cylinder 18. After flowing downward, it collides with the bottom plate 17, flows upward in the annular space between the inner cylinder 14 and the radiation cylinder 18, is discharged from the combustion gas outlet 21 to the combustion gas flow path 25, and the combustion gas The retained heat and the radiant heat from the radiation cylinder 18 are transferred through the inner cylinder 14 as the partition wall W, and the reforming catalyst layer 6c of the reforming section 6 is heated.
The raw fuel gas mixed with water vapor is supplied from the raw fuel gas inlet 19 to the reforming unit 6 and is reformed into a reformed gas containing hydrogen gas as a main component by the action of the reforming catalyst 6c.
Incidentally, when the city gas (for example, 13A) containing methane gas as a main component is the raw fuel gas, the methane gas is used under the reforming treatment temperature in the range of 600 to 700 ° C. by the catalytic action of the reforming catalyst 6c. And steam undergo a reforming reaction according to the following reaction formula, and reformed to a gas containing hydrogen gas and carbon monoxide gas.

CH ₄ + H ₂ O → CO + 3H ₂

Next, a description will be given of the configuration of portions other than the reformer R in the hydrogen-containing gas generator P.
As shown in FIGS. 11 and 12, the steam generation unit J includes a heating exhaust gas flow unit 3 that allows the combustion gas of the reforming burner 8 discharged from the combustion unit 7 to flow, and the heating exhaust gas flow channel. And an evaporation processing unit 2 that evaporates the reforming water by heating by the unit 3 to generate water vapor.

  Furthermore, in this hydrogen-containing gas generating device P, heat exchange for the raw fuel after desulfurization is performed in which the raw fuel gas after desulfurization desulfurized in the desulfurization unit 1 by the high-temperature reformed gas discharged from the reforming unit 6 is heated. Ea, raw heat exchanger Eb before desulfurization for heating raw fuel gas desulfurized in desulfurization section 1 by reformed gas after heat exchange in desulfurized raw fuel heat exchanger Ea, and heating There is provided a cooling exhaust gas flow part 37 for allowing the combustion gas discharged from the exhaust gas flow part 3 to flow and cooling the metamorphic part 4 with the combustion gas.

  After desulfurization, the raw fuel heat exchanger Ea is desulfurized in the desulfurization section 1 by the upstream heat exchange flow section 38 through which the reformed gas discharged from the reforming section 6 flows, and the reforming section 6. The desulfurized raw fuel flow section 39 for allowing the desulfurized raw fuel gas to be supplied to the exhaust gas is provided so as to be capable of exchanging heat, and the undesulfurized raw fuel heat exchanger Eb is provided with an upstream heat exchange flow Heat exchange between the downstream heat exchange flow section 40 through which the reformed gas discharged from the section 38 flows and the raw fuel flow section 41 before desulfurization through which the raw fuel gas desulfurized in the desulfurization section 1 flows. It is provided and configured freely.

As shown in FIG. 12, each part other than the reformer R among the parts constituting the hydrogen-containing gas generation device P is configured by using a plurality of flat containers B that form a processing space S for processing a fluid. Has been.
Then, the hydrogen-containing gas generation device P arranges the reformer R and the plurality of containers B in a stacked manner in the container alignment direction along the horizontal direction with the reformer R positioned in the middle. It is configured by pressing B by pressing means (not shown) from both sides of the container arrangement direction.
Each container B is made of a heat-resistant metal such as stainless steel, and in each container B, a plurality of processing spaces S are partitioned by a heat transfer plate (not shown) so as to be able to transfer heat to each other. It is formed side by side.

In this embodiment, the hydrogen-containing gas generator P is configured using five containers B. In addition, in order to make the distinction of the five containers B clear, for the sake of convenience, a reference numeral 1, 2, 3,... .
Incidentally, the reformer R is disposed between the leftmost container B1 and the second container B2 from the left.

As shown in FIG. 12, the leftmost container B1 includes two processing spaces S, the exhaust gas flow passage 3 for heating is configured in the left processing space S, and the meandering evaporation is performed in the right processing space S. A processing unit 2 is configured. That is, the water vapor generating part J is configured by the leftmost container B1.
In addition, an auxiliary heating electric heater 42 is provided for auxiliary heating of the evaporation processing unit 2 at the time of start-up or the like while being applied to the side surface of the leftmost container B1 on the evaporation processing unit 2 side.

  The second container B2 from the left is provided with two processing spaces S, the upstream processing space S is constituted by the upstream processing space S, and the raw fuel flow after desulfurization is performed in the right processing space S. A flow part 39 is configured. That is, the desulfurized raw fuel heat exchanger Ea is configured by the second container B2 from the left. Auxiliary heating electricity for auxiliary heating of the desulfurized raw fuel flow-through section 39 at the time of start-up or the like in the state of being applied to the side surface of the second desulfurized raw fuel flow section 39 in the second container B2 from the left A heater 42 is provided.

The third container B3 from the left includes four processing spaces S. The third chamber from the left, the second chamber from the left, and the processing space S at the left end are adjacent to each other so that fluid can flow in the order of description. It is communicated.
The raw fuel flow passage 41 before desulfurization is configured in the third processing space S from the left, and each of the second processing chamber and the leftmost processing space S from the left has a desulfurization catalyst 43 for desulfurizing the raw fuel gas. The desulfurization unit 1 is filled and the rightmost processing space S is filled with an iron oxide-based or copper-zinc-based conversion catalyst 44 that converts carbon monoxide gas into carbon dioxide gas using water vapor. 4 is configured.
Incidentally, although details will be described later, since the transformation section 4 constituted by the third container B3 from the left is the first stage and the transformation section 4 is provided in four stages, the third container from the left will be described below. The metamorphic part 4 configured by B3 may be referred to as the first stage metamorphic part 4.

The third processing space S from the left that constitutes the raw fuel flow passage 41 before desulfurization and the rightmost processing space S that constitutes the first-stage metamorphic portion 4 transfer heat through a heat transfer plate (not shown). The raw fuel gas to be desulfurized flowing through the raw fuel flow passage 41 before desulfurization and the reformed gas to be subjected to shift treatment flowing through the first stage shift section 4 are configured to exchange heat. ing.
In other words, the first-stage shift section 4 is configured to be used also as the downstream heat exchange flow section 40, and is used downstream by the raw fuel flow section 41 before desulfurization and the first-stage shift section 4. A heat exchanger Eb for raw fuel before desulfurization is configured by the side heat exchange flow part 40.

And the desulfurization part 1 comprised in the process space S of the 2nd chamber from the left is made into the 1st step, the desulfurization part 1 comprised in the process space S of the left end is made into the 2nd step, and the raw fuel gas to be desulfurized is After the pre-desulfurization raw fuel flow part 41 is passed and preheated, each desulfurization part 1 is made to flow through in order of the first stage and the second stage for desulfurization treatment.
An auxiliary heating electric heater 42 for assisting heating of the transformation section 4 at the time of start-up or the like is provided in a state of being applied to the side face of the third container B3 from the left side on the transformation section 4 side.

  The fourth container B4 from the left includes four processing spaces S, and the leftmost processing space S is configured as a cooling exhaust gas flow passage 37. The second processing chamber S3, the third processing chamber S, and the rightmost processing space S from the left. Are adjacent to each other so that fluids can flow in the order of description, and are filled in the shift catalyst 44 to form the shift section 4.

The transformation section 4 configured in the processing space S in the second chamber from the left is the second stage, the transformation section 4 configured in the processing space S in the third chamber from the left is the third stage, and the processing space at the right end. The transformation section 4 configured by S is the fourth stage, and an external gas processing flow path 45 is provided from the first stage transformation section 4 configured by the third container B3 from the left to the second stage transformation section 4. The reformed gas is supplied at, and the reformed gas is caused to flow through each of the transforming sections 4 in the order of the second, third, and fourth stages, and the modification process is performed.
In addition, an auxiliary heating electric heater 42 for assisting heating of the transforming portion 4 at the time of start-up or the like is provided in a state of being applied to the side surface of the fourth stage transforming portion 4 side in the fourth container B4 from the left. It has been.

  Incidentally, in the shift unit 4, carbon monoxide and water vapor in the reformed gas supplied from the reforming unit 6 are converted at a shift processing temperature in the range of 150 to 400 ° C. by the catalytic action of the shift catalyst 44. The metamorphic reaction is performed below.

The fifth container from the left, that is, the rightmost container B5, has two processing spaces S, the left processing space S is used for heat transfer adjustment without any use, and the right processing space S is carbon monoxide. The selective oxidation unit 5 is configured by filling a selective oxidation catalyst 46 of a noble metal such as platinum, ruthenium, rhodium or the like that selectively oxidizes gas.
Incidentally, in the selective oxidation unit 5, the carbon monoxide gas remaining in the reformed gas after the shift treatment under the selective oxidation treatment temperature of, for example, 80 to 150 ° C. is caused by the catalytic action of the selective oxidation catalyst 46. Selectively oxidized.

  The five containers B and the reformer R described above are arranged outside the leftmost container B1, between the leftmost container B1 and the reformer R, the reformer R and the second container B2 from the left. Between the second container B2 from the left and the third container B3 from the left, and between the third container B3 from the left and the fourth container B4 from the left. In a state where the material 47 is arranged, it is pressed from both sides of the container arranging direction by the pressing means, and is arranged in close contact with each other. Further, on the side of the rightmost container B5 constituting the selective oxidation unit 5, the container B5 A cooling blower 48 is provided so as to ventilate the air. Then, the selective oxidizer 5 is cooled by the cooling fan 48.

  Next, the connection form of the flow path to each container B or reformer R for supplying fluid to each container B or reformer R or discharging the fluid from each container B or reformer R will be described. To do. In each processing space S, the fluid is supplied from the upper part and flows downward and discharged from the lower part, or the fluid is supplied from the lower part and flows upward and supplied from the upper part. Since the fluid flows in the vertical direction so as to be discharged, each flow path is connected to the upper end portion or the lower end portion of each processing space S.

  The raw fuel gas supply path 31 is connected to the raw fuel flow section 41 before desulfurization, and the second stage desulfurization section 1 and the raw fuel flow section 39 after desulfurization are the raw fuel flow section 39 and reforming section after desulfurization. 6, the raw fuel gas inlet 19, the reformed gas outlet 20 of the reforming section 6 and the upstream heat exchange flow section 38, and the upstream heat exchange flow section 38 and the downstream heat exchange flow path. The first stage metamorphic section 4 that also serves as the flow section 40, the first stage metamorphic section 4 and the second stage metamorphic section 4, and the fourth stage metamorphic section 4 and the selective oxidation section 5 The selective oxidation unit 5 and the fuel gas supply unit of the fuel cell G are connected to each other through a gas processing channel 45 and a fuel gas channel 35.

  An ejector 49 for mixing water vapor into the raw fuel gas after desulfurization is provided in the gas processing flow path 45 that connects the second stage desulfurization unit 1 and the raw fuel flow portion 39 after desulfurization.

  A selective oxidation air supply path 51 to which selective oxidation air is supplied from a selective oxidation blower 50 is connected to the gas processing flow path 45 that connects the fourth stage shift section 4 and the selective oxidation section 5. Thus, the selective oxidation air is mixed with the reformed gas that has been subjected to the modification treatment in the modification unit 4 and supplied to the selective oxidation unit 5.

  The combustion gas outlet 21 of the combustion unit 7 and the heating exhaust gas flow part 3 are connected to the heating exhaust gas flow part 3 and the cooling exhaust gas flow part 37 through the combustion gas flow path 25, respectively. The combustion gas discharged from the combustion section 7 is configured to flow through the heating exhaust gas flow section 3 and the cooling exhaust gas flow section 37 in this order to be discharged.

  The reforming water supply path 33 is connected to the lower end of the evaporation processing unit 2, and the water vapor channel 52 that guides the water vapor generated in the evaporation processing unit 2 by heating by the heating exhaust gas flow unit 3 is provided in the ejector 43. It is connected.

  That is, the raw fuel gas is desulfurized in the first-stage and second-stage desulfurization sections 1, and the steam that is generated in the evaporation processing section 2 and supplied through the steam flow path 52 to the desulfurized raw fuel gas. Are mixed in the ejector 49, and the raw fuel gas mixed with the water vapor is reformed in the reforming section 6, and the reformed gas is treated in the first, second, third, fourth. A shift treatment is performed in the shift unit 4, and the reformed reformed gas is selectively oxidized in the selective oxidation unit 5 to generate a hydrogen-containing gas having a low carbon monoxide concentration. The hydrogen-containing gas is used as a fuel gas. It is configured to be supplied to the fuel cell G through the fuel gas channel 35.

In the present invention, as shown in FIGS. 1 and 2, the reforming catalyst layer is formed by the reforming burner 8 along the heating distribution changing direction in which both end portions 14 e and 14 e of the inner cylinder 14 as the partition wall W are aligned. The heating distribution changing means A capable of changing the heating distribution for heating 6c, and the temperature distribution in the direction along the heating distribution changing direction in the reforming catalyst layer 6c (hereinafter sometimes referred to as the reforming catalyst layer temperature distribution). Is provided with temperature distribution change detecting means D for detecting a temperature distribution change that has changed from an appropriate temperature distribution.
When the temperature distribution change detection means D detects the temperature distribution change, the operation control unit C performs the heating distribution so that the reforming catalyst layer temperature distribution detected by the temperature distribution change detection means D approaches the appropriate temperature distribution. Is configured to control the operation of the heating distribution changing means A.

In the first embodiment, the open ends on both sides of the inner cylinder 14 correspond to both end portions 14e, and the heating distribution changing direction is the axial direction of the inner cylinder 14, that is, the vertical direction (corresponding to the vertical direction in FIG. 1). ) Is set.
As shown in FIGS. 2 and 3, the flame hole 60 for injecting the combustion gas fuel (mixed gas in the present embodiment) into the combustion space 7 s in the reforming burner 8 is heated and distributed in the direction in which the mixed gas is ejected. A plurality is provided in a form different from the direction along the changing direction and the direction inclined toward the inner cylinder 14 as the partition wall W with respect to the heating distribution changing direction.
Moreover, as shown in FIG. 1, the fuel injection form change means V which can change the flame hole 60 which ejects mixed gas among several flame holes is provided.

  The reforming burner 8 will be described. As shown in FIGS. 2 and 3, the reforming burner 8 has a plurality of (six in the first embodiment) direct flame holes 60s that are annular at equal intervals. A disc-shaped nozzle portion having concentrically arranged inclined jet flame hole rows 60T arranged in an annular manner at equal intervals, and a plurality of (in this first embodiment, 12) inclined jet flame holes 60t are arranged in a ring shape. 61, a cylindrical inner pipe 63 forming a direct injection flow path 62 for supplying a mixed gas to the direct flame hole row 60S, and an inclined jet for supplying the mixed gas to the inclined jet flame row 60T. A cylindrical outer tube 65 and the like forming the use flow path 64 are integrally assembled.

Each direct flame hole 60s is formed in the nozzle part 61 in a state where the hole axis is parallel to the axis of the nozzle part 61, and is provided so as to eject the mixed gas in a direction along the heating distribution changing direction. It has been.
A corner portion at the tip of the nozzle portion 61 is formed in a shape that is notched so as to form a tapered surface that is inclined toward the inner cylinder 14 with respect to the heating distribution changing direction. Each inclined ejection flame hole 60t opens to the tapered surface of the outer peripheral portion of the tip of the nozzle portion 61, and the hole axis of the tip side portion is inclined toward the inner cylinder 14 with respect to the heating distribution changing direction. Thus, it is formed in the nozzle part 61 and is provided so as to eject the mixed gas in a direction inclined toward the inner cylinder 14 with respect to the heating distribution changing direction.
The total cross-sectional area obtained by adding up the cross-sectional areas of each of the direct flame holes 60s and the total cross-sectional area of adding up the cross-sectional areas of each of the plurality of inclined jet flame holes 60t are configured to be substantially equal.

The inner tube 63 and the outer tube 65 are arranged coaxially, the nozzle portion 61 is attached to the tip of the inner tube 63 and the outer tube 65, and the base ends thereof are closed by the lid plate 66. A direct-injection flow path 62 that communicates with the plurality of direct-injection flame holes 60 s is formed inside the inner tube 63, and communicates with the plurality of inclined ejection flame holes 60 t between the inner tube 63 and the outer tube 65. An inclined ejection channel 64 is formed.
A spark plug 67 is provided in a state of passing through the axis of the inner tube 63 and penetrating the cover plate 66, the inner tube 63 and the nozzle portion 61.
Further, a direct injection receiving port 68 is attached to the cover plate 66 in a state of communicating with the direct injection flow path 62, and an inclined jet flow is provided at an end of the outer tube 65 on the side closed by the cover plate 66. An inclined ejection inlet 69 is attached in a state of communicating with the path 64.

  That is, the direction perpendicular to the arrangement direction of both end portions 14e and 14e (the axial center direction of the inner cylinder 14) on the wall surface of the inner cylinder 14 as the partition wall W, that is, the direction along the circumferential direction of the inner cylinder 14 is the flame hole arrangement. The direction of the mixed gas (an example of combustion fuel) along the heating distribution changing direction is arranged in a line along the flame hole alignment direction along the circumferential direction of the inner cylinder 14 as a plurality of flame holes 60. A plurality of direct-injection flame holes 60 s that are jetted in a row and a plurality of inclinations that are arranged in a line along the flame-hole arrangement direction and jet the mixed gas in a direction inclined toward the inner cylinder 14 with respect to the heating distribution change direction A jet flame hole 60t is provided.

As shown in FIG. 1, the mixed gas supply path 23 is branched into a direct injection branch path 23s and an inclined jet branch path 23t, and the direct injection branch path 23s is connected to the direct injection inlet 68 and is inclined. The jet branch 23t is connected to the inclined jet receiving port 69.
The direct injection branch passage 23s is provided with a direct injection intermittent valve Vs for interrupting the flow of the mixed gas in the direct injection branch passage 23s, and the inclined injection branch passage 23t is provided for the inclined injection. An inclined ejection intermittent valve Vt for intermittently flowing the mixed gas in the branch passage 23t is provided.

Then, as shown in FIG. 4A, when both the direct injection intermittent valve Vs and the inclined ejection intermittent valve Vt are opened (hereinafter sometimes referred to as a first heating pattern), the mixed gas is directly injected. The direct flow flame hole row 60S in which the plurality of direct injection flame holes 60s are arranged in an annular row and the plurality of inclined jet flame holes 60t are arranged in a row. The gas is ejected from both of the aligned inclined ejection flame hole rows 60T into the combustion space 7s.
Alternatively, as shown in FIG. 4B, when the direct injection intermittent valve Vs is opened and the inclined ejection intermittent valve Vt is closed (hereinafter sometimes referred to as a second heating pattern), the mixed gas is directly injected. It will flow through the flow path 62 and will be ejected from the direct flame hole array 60S to the combustion space 7s.
Alternatively, as shown in FIG. 4 (c), when the direct injection intermittent valve Vs is closed and the inclined injection intermittent valve Vt is opened (hereinafter, sometimes referred to as a third heating pattern), the mixed gas is inclined. The plurality of inclined ejection flame holes 60t are ejected into the combustion space 7s from the inclined ejection flame hole array 60T in which the plurality of inclined ejection flame holes 60t are arranged in a row.

  That is, the direct injection intermittent valve Vs and the inclined injection intermittent valve Vt constitute fuel injection switching means capable of intermittently discharging the mixed gas from each of the direct injection flame hole row 60S and the inclined injection flame hole row 60T. The fuel injection form changing means V is constituted by a direct injection intermittent valve Vs and an inclined injection intermittent valve Vt.

  As shown in FIG. 1, the region at one end in the heating distribution changing direction in the reforming unit 6, that is, the temperature of the upper region Lu in the reforming catalyst layer 6c, the middle region in the heating distribution changing direction, that is, the reforming catalyst. In order to detect the temperature of the intermediate region Lm in the vertical direction in the layer 6c and the region on the other end side in the heating distribution change direction, that is, the temperature of the lower region Lb in the reforming catalyst layer 6c, the upper temperature sensor Tu and the intermediate temperature sensor Tm and the lower temperature sensor Tb are provided in a state of being close to the outer peripheral surface of the inner cylinder 14.

The reforming catalyst layer temperature distribution is composed of detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb.
Then, before the reformer R is shipped, the reforming catalyst comprising the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb when the reforming burner 8 is burned in the first heating pattern. The layer temperature distribution is stored in the storage unit (not shown) of the operation control unit C as an appropriate temperature distribution.
When the reforming burner 8 is burned in the first heating pattern, the reforming catalyst layer temperature distribution including the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb is made as uniform as possible. Further, the mounting position of the reforming burner 7 in the vertical direction with respect to the combustion part 7 and the mixed gas ejection direction of the inclined ejection flame hole 60t are set.

Further, a temperature distribution change detection unit Cd that detects a temperature distribution change based on the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb is configured using the operation control unit C.
Specifically, the temperature distribution change detection unit Cd detects the temperature distribution change in which the temperature of the upper region Lu in the reforming unit 6 has decreased when the temperature detected by the upper temperature sensor Tu is lower than the temperature in the appropriate temperature distribution by a set temperature or more. When the detected temperature of the lower temperature sensor Tb is lower than the temperature in the appropriate temperature distribution by the set temperature or more, a temperature distribution change in which the temperature of the lower region Lb in the reforming unit 6 is detected is detected.
That is, the temperature distribution change detection means D is configured by the upper temperature sensor Tu, the intermediate temperature sensor Tm, the lower temperature sensor Tb, and the temperature distribution change detection unit Cd.

Next, a description will be given of how the heating distribution of the reforming catalyst layer 6c is changed in the heating distribution changing direction by the reforming burner 8. FIG.
As shown in FIG. 4A, a heating pattern for heating the reforming catalyst layer 6c of the reforming section 6 by opening both the direct injection intermittent valve Vs and the inclined ejection intermittent valve Vt (hereinafter referred to as a reforming catalyst). When the first heating pattern is used as the first heating pattern, the heating distribution in the heating distribution changing direction (vertical direction) (that is, the distribution of the heating degree) is the upper region Lu as shown in FIG. , The heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are heating distributions of “medium”, “high”, and “medium”, respectively.
Alternatively, as shown in FIG. 4B, when the direct injection intermittent valve Vs is opened, the inclined ejection intermittent valve Vt is closed, and the reforming catalyst layer heating pattern is changed to the second heating pattern, as shown in FIG. Furthermore, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “low”, “medium”, and “high”, respectively. Distribution.
Alternatively, as shown in FIG. 4C, when the direct injection intermittent valve Vs is closed, the inclined ejection intermittent valve Vt is opened, and the reforming catalyst layer heating pattern is changed to the third heating pattern, as shown in FIG. Furthermore, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “high”, “medium”, and “low”, respectively. Distribution.
That is, when the first heating pattern is used, the heating distribution of the reforming catalyst layer 6c in the direction of changing the heating distribution by the reforming burner 8 becomes the most uniform.

Next, a control operation of the operation control unit C will be briefly described with reference to FIGS.
The operation control unit C is configured using a microcomputer or the like, and controls operations of the hydrogen-containing gas generation device P including the reformer R, the fuel cell G, and the like by executing a predetermined control program. It is configured as follows.
In normal operation in which the operation control unit C generates a hydrogen-containing gas in an amount corresponding to the power generation output of the fuel cell G and supplies the hydrogen-containing gas to the fuel cell G, the supply amount of the raw fuel gas according to the power generation output of the fuel cell G The raw fuel blower 32 and the reforming water pump 34 are controlled to adjust the supply amount of the reforming water.
In normal operation, the operation control unit C opens both the direct injection intermittent valve Vs and the inclined injection intermittent valve Vt, sets the reforming catalyst layer heating pattern as the first heating pattern, and the intermediate temperature sensor Tm. The combustion fuel blower 10 is controlled and the reforming fuel blower 10 is controlled so as to adjust the supply amount of the combustion gas fuel to the reforming burner 8 so that the detected temperature becomes the predetermined reforming setting temperature. The combustion air blower 12 is controlled to adjust the supply amount of the combustion air supplied to the burner 8 to an amount corresponding to the supply amount of the combustion gas fuel to the reforming burner 8.

According to the power generation output of the fuel cell G, the supply amount of off-gas as combustion gas fuel supplied to the reforming burner 8 through the off-gas passage 24 is known, and based on the control information of the combustion fuel blower 10, The supply amount of the combustion gas fuel supplied by the fuel blower 10 is known.
Therefore, according to the supply amount of off gas supplied to the reforming burner 8 and the supply amount of combustion gas fuel by the combustion fuel blower 10, the amount of combustion air for completely burning them is obtained. The combustion air amount derivation information is preset by map information or the like and stored in the storage unit of the operation control unit C.
Then, the operation control unit C corresponds to the supply amount of the off gas supplied to the reforming burner 8 and the supply amount of the combustion gas fuel by the combustion fuel blower 10 based on the combustion air amount derivation information. The combustion air blower 12 is controlled so as to determine the supply amount of the combustion air and supply the calculated supply amount of combustion air.

The temperature distribution change detection unit Cd monitors the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb during normal operation, and the detected temperature of the upper temperature sensor Tu is set higher than the temperature in the appropriate temperature distribution. When the temperature is lower than the temperature, the temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is decreased is detected. When the temperature detected by the lower temperature sensor Tb is lower than the temperature in the appropriate temperature distribution, the reforming unit 6 is detected. The temperature distribution change in which the temperature of the lower region Lb is decreased is detected.
When the temperature distribution change detection unit Cd detects a temperature distribution change in which the temperature of the lower region Lb of the reforming unit 6 is decreased, the operation control unit C opens the direct injection intermittent valve Vs, and the inclined ejection intermittent valve. Vt is closed and the reforming catalyst layer heating pattern is changed to the second heating pattern.
Then, since the heating pattern for heating the reforming catalyst layer 6c of the reforming unit 6 is a heating pattern in which the lower region Lb is heated to a high degree, the temperature distribution in which the temperature of the lower region Lb of the reforming unit 6 is reduced is improved. It approaches the appropriate temperature distribution.

Further, when the temperature distribution change detection unit Cd detects a temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is decreased, the operation control unit C closes the direct injection intermittent valve Vs and performs the inclined jetting. The intermittent valve Vt is opened, and the reforming catalyst layer heating pattern is changed to the third heating pattern.
Then, since the heating pattern for heating the reforming catalyst layer 6c of the reforming unit 6 is a heating pattern in which the heating degree of the upper region Lu is high, the temperature distribution in which the temperature of the upper region Lu of the reforming unit 6 is reduced is improved. It approaches the appropriate temperature distribution.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described. This second embodiment describes another embodiment of a configuration for changing the heating distribution by the reforming burner 8, and includes other hydrogen-containing components. The configuration of the gas generator P is the same as that of the first embodiment. Accordingly, the same constituent elements as those in the first embodiment and the constituent elements having the same action are denoted by the same reference numerals in order to avoid duplicate description, and the reforming burner 8 will be mainly described.

  As shown in FIGS. 6 to 8, in this second embodiment, the reforming burner 8 has a plurality of (six in this second embodiment) front flame holes 60 f arranged in a ring at regular intervals. A disc-shaped front nozzle portion 71 provided with a row 60F, and a plurality (eight in this second embodiment) of intermediate flame holes 60m located rearward (upward) in the heating distribution changing direction from the front nozzle 71. Ring-shaped intermediate nozzle part 72 provided with intermediate flame hole rows 60M arranged in a ring at equal intervals, and a plurality (this second) is positioned rearward (upward) in the heating distribution changing direction with respect to the intermediate nozzle part 72. In the embodiment, 12) rear flame holes 60r are configured to include a ring-shaped rear nozzle portion 73 provided with a rear flame hole row 60R arranged in an annular shape at equal intervals.

  Further, the reforming burner 8 includes a cylindrical inner pipe 75 forming a front flame hole flow path 74 for supplying the mixed gas to the front flame hole array 60F, and an intermediate flame for supplying the mixed gas to the intermediate flame hole array 60M. An intermediate pipe 77 that forms the hole flow path 76 with the inner pipe 75, and an outer pipe 79 that forms the rear flame hole flow path 78 that supplies the mixed gas to the rear flame hole row 60 </ b> R with the intermediate pipe 77. ing.

As shown in FIG. 7, each front flame hole 60f is formed in the front nozzle part 71 in a state where the hole axis is parallel to the axis of the front nozzle part 71, and each intermediate flame hole 60m has a hole axis. Are formed in the intermediate nozzle portion 72 in a state parallel to the axial center of the intermediate nozzle portion 72, and each rear flame hole 60r has a rear nozzle in a state in which the hole axis is parallel to the axial center of the rear nozzle portion 73. Each of the front flame holes 60f, the intermediate flame holes 60m, and the rear flame holes 60r is formed in the portion 73 so as to eject the mixed gas in a direction along the heating distribution changing direction.
It should be noted that the total cross-sectional area obtained by summing the cross-sectional areas of each of the plurality of front flame holes 60f, the total cross-sectional area obtained by summing the cross-sectional areas of each of the plurality of intermediate flame holes 60m, and the cross-sectional area of each of the plurality of rear flame holes 60r. The total cross-sectional area is configured to be approximately equal.

A front nozzle portion 71 is coaxially attached to the tip of the inner tube 75, and an intermediate nozzle portion 72 is coaxially attached to the rear side (upward) of the front nozzle portion 71 in the inner tube 75 in an outer fitting shape. An intermediate tube 77 is connected to the intermediate nozzle portion 72 in a state of being coaxially disposed on the outer peripheral portion of the inner tube 75.
A rear nozzle portion 73 is coaxially and externally attached to the rear side (upward) of the intermediate nozzle portion 72 in the middle tube 77, and an outer tube 79 is attached to the rear nozzle portion 73 of the middle tube 77. It is connected to the outer periphery in a state of being coaxially disposed.
Further, the base ends of the inner tube 75, the middle tube 77 and the outer tube 79 are collectively closed by the lid plate 80.

A forward flame hole flow path 74 communicating with the plurality of front flame holes 60 f is formed inside the inner pipe 75, and communicated with the plurality of intermediate flame holes 60 m between the inner pipe 75 and the middle pipe 77. An intermediate flame hole channel 76 is formed, and a rear flame hole channel 78 communicating with the plurality of rear flame holes 60 r is formed between the middle tube 77 and the outer tube 79.
A front ignition plug 81 is provided in a state of passing through the axis of the inner tube 75 and penetrating the cover plate 80, the inner tube 75 and the front nozzle portion 71, and a rear ignition plug 82 is provided in the rear nozzle portion 73. It is provided in a state where it is brought into contact with the outer peripheral surface of the outer cylinder 79 in a state of protruding forward.
Further, the lid plate 80 is provided with a front flame hole receiving port 83 in a state communicating with the front flame hole channel 74, and in a state communicating with the intermediate flame hole channel 76. In the state where the inlet 84 is attached and communicates with the rear flame hole channel 78, the rear flame hole inlet 85 is attached.

That is, as a plurality of flame holes 60, the mixed gas (an example of combustion fuel) is ejected in a direction along the heating distribution changing direction, arranged in a line along the flame hole arrangement direction along the circumferential direction of the inner cylinder 14. A plurality of flame holes 60 (ie, a plurality of front flame holes 60f, a plurality of intermediate flame holes 60m, a front flame hole row 80F including a plurality of rear flame holes 60r, an intermediate flame hole row 80M, and a rear flame hole row 80R are heated. It is provided along the distribution change direction.
The front flame hole row 80F or the intermediate flame hole row 80M is ignited by the front ignition plug 81, and the rear flame hole row 80R is ignited by the rear ignition plug 82.

As shown in FIG. 6, the mixed gas supply path 23 is branched into a front flame hole branch path 23f, an intermediate flame hole branch path 23m, and a rear flame hole branch path 23r. 23 f is connected to the front flame hole inlet 83, the intermediate flame hole branch 23 m is connected to the intermediate flame hole inlet 84, and the rear flame hole branch 23 r is connected to the rear flame hole inlet 85. ing.
Further, the front flame hole branch 23f is provided with a front flame hole interrupting valve Vf for interrupting the flow of the mixed gas in the front flame hole branch 23f. An intermediate flame hole interrupting valve Vm is provided for interrupting the flow of the mixed gas in the intermediate flame hole branch 23m. The rear flame hole branch 23r is connected to the mixed gas in the rear flame hole branch 23r. A rear flame hole interrupting valve Vr for interrupting the flow is provided.

Then, as shown in FIG. 9A, all of the forward flame hole intermittent valve Vf, the intermediate flame hole intermittent valve Vm, and the rear flame hole intermittent valve Vr are opened (hereinafter referred to as a first heating pattern). The mixed gas flows through the front flame hole channel 74, the intermediate flame hole channel 76, and the rear flame hole channel 78, so that the front flame hole row 60F, the intermediate flame hole row 60M, and the rear flame. It will be ejected from the hole row 60R to the combustion space 7s.
As shown in FIG. 9B, the forward flame hole intermittent valve Vf and the intermediate flame hole intermittent valve Vm are opened, and the rear flame hole intermittent valve Vr is closed (hereinafter referred to as a second heating pattern in some cases). ), The mixed gas flows through the front flame hole channel 74 and the intermediate flame hole channel 76, and is ejected from the front flame hole row 60F and the intermediate flame hole row 60M into the combustion space 7s.
As shown in FIG. 9 (c), the front flame hole intermittent valve Vf is opened, and the intermediate flame hole intermittent valve Vm and the rear flame hole intermittent valve Vr are closed (hereinafter sometimes referred to as a third heating pattern). ), The mixed gas flows only through the front flame hole channel 74 and is ejected from only the front flame hole row 60F into the combustion space 7s.

As shown in FIG. 9 (d), the front flame hole intermittent valve Vf is closed, and the intermediate flame hole intermittent valve Vm and the rear flame hole intermittent valve Vr are opened (hereinafter sometimes referred to as a fourth heating pattern). ), The mixed gas flows through the intermediate flame hole channel 76 and the rear flame hole channel 78, and is ejected from the intermediate flame hole row 60M and the rear flame hole row 60R into the combustion space 7s.
As shown in FIG. 9 (e), the front flame hole intermittent valve Vf and the intermediate flame hole intermittent valve Vm are closed and the rear flame hole intermittent valve Vr is opened (hereinafter may be referred to as a fifth heating pattern). ), The mixed gas flows only through the rear flame hole channel 78 and is ejected from only the rear flame hole row 60R into the combustion space 7s.

  That is, the mixed gas from each of the front flame hole row 60F, the intermediate flame hole row 60M, and the rear flame hole row 60R is caused by the front flame hole interruption valve Vf, the intermediate flame hole interruption valve Vm, and the rear flame hole interruption valve Vr. The fuel injection switching means capable of intermittently injecting the fuel is constituted, and the fuel injection form changing means V is constituted by the forward flame hole intermittent valve Vf, the intermediate flame hole intermittent valve Vm, and the rear flame hole intermittent valve Vr.

As shown in FIG. 6, as in the first embodiment, the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb are provided in a state of being close to the outer peripheral surface of the inner cylinder 14, and the reforming catalyst The layer temperature distribution is composed of detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb.
Then, before the reformer R is shipped, the reformer composed of the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb when the reforming burner 8 is burned in the first heating pattern. The catalyst layer temperature distribution is stored in the storage unit (not shown) of the operation control unit C as an appropriate temperature distribution.
When the reforming burner 8 is burned in the first heating pattern, the reforming catalyst layer temperature distribution including the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb becomes as uniform as possible. As described above, the mounting position of the reforming burner 7 in the vertical direction with respect to the combustion section 7 and the mounting positions of the front nozzle section 71, the intermediate nozzle section 72, and the rear nozzle section 73 in the reforming burner 7 in the vertical direction. Is set.

  Similarly to the first embodiment, the temperature distribution change detection unit Cd that detects the temperature distribution change based on the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb includes an operation control unit. The temperature distribution change detection means D is configured by the upper temperature sensor Tu, the intermediate temperature sensor Tm, the lower temperature sensor Tb, and the temperature distribution change detection unit Cd.

Next, a description will be given of how the heating distribution of the reforming catalyst layer 6c is changed in the heating distribution changing direction by the reforming burner 8. FIG.
As shown in FIG. 9A, all of the forward flame hole intermittent valve Vf, the intermediate flame hole intermittent valve Vm, and the rear flame hole intermittent valve Vr are opened, and the reforming catalyst layer heating pattern is changed to the first heating pattern. Then, as shown in FIG. 10, the heating distribution (that is, the distribution of the heating degree) in the heating distribution changing direction (up and down direction) includes the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the lower region Lb. The heating distributions are “high”, “high”, and “high”, respectively.
As shown in FIG. 9B, the forward flame hole intermittent valve Vf and the intermediate flame hole intermittent valve Vm are opened, the rear flame hole intermittent valve Vr is closed, and the reforming catalyst layer heating pattern is changed to the second heating pattern. Then, as shown in FIG. 10, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “low” and “high”, respectively. ”And“ High ”.

As shown in FIG. 9C, the forward flame hole intermittent valve Vf is opened, the intermediate flame hole intermittent valve Vm and the rear flame hole intermittent valve Vr are closed, and the reforming catalyst layer heating pattern is changed to the third heating pattern. Then, as shown in FIG. 10, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “low” and “low”, respectively. The heating distribution becomes “high”.
As shown in FIG. 9D, the forward flame hole intermittent valve Vf is closed, the intermediate flame hole intermittent valve Vm and the rear flame hole intermittent valve Vr are opened, and the reforming catalyst layer heating pattern is changed to the fourth heating pattern. Then, as shown in FIG. 10, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “high” and “high”, respectively. The heating distribution becomes “low”.
As shown in FIG. 9 (e), the forward flame hole intermittent valve Vf and the intermediate flame hole intermittent valve Vm are closed, the rear flame hole intermittent valve Vr is opened, and the reforming catalyst layer heating pattern is changed to the fifth heating pattern. Then, as shown in FIG. 10, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “high” and “low”, respectively. The heating distribution becomes “low”.
That is, when the first heating pattern is used, the heating distribution of the reforming catalyst layer 6c in the direction of changing the heating distribution by the reforming burner 8 becomes the most uniform.

Next, the control operation of the operation control unit C will be briefly described.
The operation control unit C executes normal operation in the same manner as in the first embodiment. In the normal operation, the front flame hole intermittent valve Vf, the intermediate flame hole intermittent valve Vm, and the rear flame hole intermittent valve Vr are all operated. Open the reforming catalyst layer heating pattern as the first heating pattern, and set the combustion gas fuel to the reforming burner 8 so that the temperature detected by the intermediate temperature sensor Tm becomes the predetermined temperature for reforming. In order to adjust the supply amount, the combustion fuel blower 10 is controlled, and the supply amount of the combustion air supplied to the reforming burner 8 corresponds to the supply amount of the combustion gas fuel to the reforming burner 8. The combustion air blower 12 is controlled to adjust the amount.

The temperature distribution change detection unit Cd monitors the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb during normal operation, and the detected temperature of the upper temperature sensor Tu is set higher than the temperature in the appropriate temperature distribution. When the temperature is lower than the temperature, the temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is decreased is detected. When the temperature detected by the lower temperature sensor Tb is lower than the temperature in the appropriate temperature distribution, the reforming unit 6 is detected. The temperature distribution change in which the temperature of the lower region Lb is decreased is detected.
When the temperature distribution change detection unit Cd detects a temperature distribution change in which the temperature of the lower region Lb of the reforming unit 6 is decreased, the operation control unit C detects the forward flame hole intermittent valve Vf and the intermediate flame hole intermittent valve. From the state where Vm and the rear flame hole intermittent valve Vr are all open, the rear flame hole intermittent valve Vr is closed and the reforming catalyst layer heating pattern is changed to the second heating pattern.
In the second heating pattern, since the heating degree of the intermediate region Lm and the lower region Lb is relatively high, the temperature distribution in which the temperature of the lower region Lb of the reforming unit 6 is reduced is improved and approaches the appropriate temperature distribution.

Thus, even if the forward flame hole intermittent valve Vf and the intermediate flame hole intermittent valve Vm are opened, the rear flame hole intermittent valve Vr is closed, and the reforming catalyst layer heating pattern is changed to the second heating pattern, the temperature distribution changes. When the detection unit Cd detects a change in temperature distribution in which the temperature of the lower region Lb of the reforming unit 6 has decreased, the operation control unit C further closes the intermediate flame hole intermittent valve Vm to heat the reforming catalyst layer. The pattern is changed to the third heating pattern.
In this third heating pattern, the heating degree of the lower region Lb is increased, and the lower region Lb is intensively heated, so that the temperature distribution in which the temperature of the lower region Lb of the reforming unit 6 is further reduced is further improved. Approaching the proper temperature distribution.

Further, when the temperature distribution change detection unit Cd detects a temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is decreased, the operation control unit C detects the forward flame hole intermittent valve Vf and the intermediate flame hole. From the state where all of the intermittent valve Vm and the rear flame hole intermittent valve Vr are open, the forward flame hole intermittent valve Vf is closed and the reforming catalyst layer heating pattern is changed to the fourth heating pattern.
In the fourth heating pattern, since the heating degree of the upper region Lu and the intermediate region Lm is relatively high, the temperature distribution in which the temperature of the upper region Lu of the reforming unit 6 is reduced is improved and approaches the appropriate temperature distribution.

In this way, the front flame hole intermittent valve Vf is closed, the intermediate flame hole intermittent valve Vm and the rear flame hole intermittent valve Vr are opened, and the reforming catalyst layer heating pattern is changed to the fourth heating pattern. When the detection unit Cd detects a temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is decreased, the operation control unit C further closes the intermediate flame hole intermittent valve Vm to heat the reforming catalyst layer. The pattern is changed to the fifth heating pattern.
In the fifth heating pattern, the degree of heating of the upper region Lu is increased and the upper region Lu is heated intensively, so that the temperature distribution in which the temperature of the upper region Lu of the reforming unit 6 is reduced is improved, It approaches the appropriate temperature distribution.

Further, as described above, when the operation control unit C sets the reforming catalyst layer heating pattern to the second or third heating pattern, the temperature distribution change detection unit Cd detects the temperature of the upper region Lu of the reforming unit 6. When the temperature distribution change with the decrease is detected, the operation control unit C determines that the reforming catalyst layer temperature distribution including the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb approaches the appropriate temperature distribution. Thus, the reforming catalyst layer heating pattern is changed to one of the first, fourth, or fifth heating pattern.
As described above, when the operation control unit C sets the reforming catalyst layer heating pattern to the fourth or fifth heating pattern, the temperature distribution change detection unit Cd detects the temperature of the lower region Lb of the reforming unit 6. When the temperature distribution change with the decrease is detected, the operation control unit C determines that the reforming catalyst layer temperature distribution including the detected temperatures of the upper temperature sensor Tu, the intermediate temperature sensor Tm, and the lower temperature sensor Tb approaches the appropriate temperature distribution. Thus, the reforming catalyst layer heating pattern is changed to one of the first and second heating patterns.

[Another embodiment]
Next, another embodiment will be described.
(A) In the second embodiment, when the temperature detected by the upper temperature sensor Tu becomes higher than the temperature in the appropriate temperature distribution as the temperature distribution change detected by the temperature distribution change detection unit Cd, the reforming unit 6 When the temperature distribution change in which the temperature of the upper region Lu of the temperature rises is detected and the temperature detected by the lower temperature sensor Tb becomes higher than the temperature in the appropriate temperature distribution by the set temperature or more, the temperature of the lower region Lb of the reforming unit 6 increases. You may make it detect a temperature distribution change.
In this case, when configuring the operation control unit C, when a temperature distribution change in which the temperature of the upper region Lu of the reforming unit 6 is increased is detected, the reforming catalyst layer temperature distribution is modified so as to approach the appropriate temperature distribution. If the temperature distribution change in which the temperature of the lower region Lb of the reforming unit 6 is increased is detected by changing the heating catalyst layer heating pattern to the second or third heating pattern, the reforming catalyst layer temperature distribution becomes an appropriate temperature distribution. The reforming catalyst layer heating pattern is changed to the fourth or fifth heating pattern so as to approach.

(B) In the second embodiment, as the reforming catalyst layer heating pattern, the front flame hole intermittent valve Vf and the rear flame hole intermittent valve Vr are opened, the intermediate flame hole intermittent valve Vm is closed, and the mixed gas However, a heating pattern that flows through the front flame hole channel 74 and the rear flame hole channel 78 and is ejected from the front flame hole row 60F and the rear flame hole row 60R into the combustion space 7s may be added. In this case, the heating distribution in the heating distribution changing direction is such that the heating degree of the upper region Lu, the heating degree of the intermediate region Lm, and the heating degree of the lower region Lb are “high”, “low”, and “high”, respectively. It becomes the heating distribution which becomes.

(C) The form in which the plurality of flame holes 60 are arranged in the reforming burner 8 is not limited to the arrangement form described in each of the first and second embodiments.
For example, when providing a direct injection flame hole row 60S in which a plurality of direct injection flame holes 60s are arranged in a row and an inclined injection flame hole row 60T in which a plurality of inclined injection flame holes 60t are arranged in a row, an inclined injection flame hole row is provided. As 60T, a plurality of inclined ejection flame hole rows 60T having different inclination angles toward the partition wall W in the inclined ejection flame holes 60t may be provided.
When a plurality of rows are provided along the flame hole heating distribution change direction, a flame hole row consisting of flame holes whose combustion fuel injection direction is along the heating distribution change direction, and the fuel injection direction is a heating distribution. A flame hole array composed of flame holes in a direction inclined toward the partition wall W with respect to the changing direction may be provided in a mixed manner.

(D) The specific configuration of the temperature distribution change detection means D is the configuration described in the first and second embodiments, that is, the upper temperature sensor Tu, the intermediate temperature sensor Tm, the lower temperature sensor Tb, and the temperature. The configuration is not limited to the configuration including the distribution change detection unit Cd.
For example, as shown by a virtual line (dashed line) in FIGS. 1 and 6, the gas is generated in the reforming unit 6 in the gas processing flow path 45 connected to the reformed gas outlet 20 of the reforming unit 6. A methane concentration sensor M (an example of component concentration detection means) that detects the concentration of methane gas in the reformed gas is provided. In this case, the concentration of methane gas detected by the methane concentration sensor M corresponds to the reforming catalyst layer temperature distribution. That is, the higher the reforming catalyst layer temperature distribution, the lower the reforming efficiency and the higher the concentration of methane gas in the reformed gas. Therefore, the higher the concentration of methane gas detected by the methane concentration sensor M, the higher the reforming catalyst layer temperature distribution. This corresponds to an increase in the temperature distribution of the catalyst bed.
The temperature distribution change detection means D is configured to include a methane concentration sensor M, and the temperature distribution change is detected based on the fact that the concentration of methane gas detected by the methane concentration sensor M is higher than the appropriate range. You may comprise so that it may detect.
When the configuration of the temperature distribution change detection means D is applied to the first embodiment, when the methane gas concentration detected by the methane concentration sensor M is higher than the appropriate range, the methane concentration sensor M While detecting the concentration, the reforming catalyst layer heating pattern is sequentially changed to the second heating pattern and the third heating pattern, and the heating pattern with the lowest methane gas concentration detected by the methane concentration sensor M is selected as the reforming catalyst layer. Set to heating pattern.

  In addition, when the configuration of the temperature distribution change detection means D is applied to the second embodiment, when the concentration of methane gas detected by the methane concentration sensor M becomes higher than the appropriate range, the methane concentration sensor M While detecting the methane gas concentration, the reforming catalyst layer heating pattern is sequentially changed to the second, third, fourth, and fifth heating patterns, and the methane gas concentration detected by the methane concentration sensor M is the highest. A low heating pattern is set as the reforming catalyst layer heating pattern.

A specific example of the component concentration detection means constituting the temperature distribution change detection means D is not limited to the methane concentration sensor M described above. For example, a hydrogen concentration sensor that detects the concentration of hydrogen gas in the reformed gas. Can be used.
In this case, the temperature distribution change is detected based on the fact that the concentration of hydrogen gas detected by the hydrogen concentration sensor becomes lower than the appropriate range.

(E) The specific configuration of the reformer R is not limited to the configurations described in the first and second embodiments. For example, the reformer R may be configured using a container B having two processing spaces S similar to those in the first embodiment. That is, the reforming unit 6 is configured using one processing space S of the container B, and the combustion unit 7 is configured using the other processing space S.
Further, the specific configuration (shape, etc.) of the reforming burner 8 is not limited to the configuration described in the first and second embodiments, and is configured according to the configuration of the reforming apparatus R. be able to.
For example, when the reformer R is configured using the container B as described above, the partition wall W is planar. Therefore, when the reformer burner 8 is provided with a flame hole array composed of a plurality of flame holes 60, the partition wall W The flame hole alignment direction along the direction orthogonal to the alignment direction of both ends of the wall surface of the wall surface is linear.

(F) In each of the first and second embodiments, the reforming burner 8 is supplied with the combustion gas fuel (combustion gas fuel and off-gas from the combustion fuel blower 10) and the combustion air blower 12. A mixed gas mixed with combustion air was supplied. Instead of this, the reforming burner 8 may be configured to be supplied with combustion gas fuel and combustion air separately.

  As described above, it is possible to provide a reforming apparatus that can suppress a decrease in reforming efficiency over time.

6 reforming part 6c reforming catalyst, reforming catalyst layer 7 combustion part 7s combustion space 8 reforming burner 14e end part 60 flame hole 60f front flame hole (flame hole)
60m Intermediate flame hole (flame hole)
60r rear flame hole (flame hole)
60s Direct flame hole 60t Inclined flame hole 60F Front flame hole row (flame hole row)
60M Intermediate flame hole array (flame hole array)
60R rear flame hole row (flame hole row)
60S Direct flame hole row 60T Inclined jet flame hole row A Heating distribution changing means C Operation control unit (control means)
D Temperature distribution change detection means M Methane concentration sensor (component concentration detection means)
R reformer Tb Lower temperature sensor (temperature detection means)
Tm Intermediate temperature sensor (temperature detection means)
Tu upper temperature sensor (temperature detection means)
V Fuel injection mode changing means Vs, Vt Fuel injection switching means Vf, Vm, Vr Fuel injection switching means W

Claims (6)

The reforming section in which the reforming catalyst is charged and the combustion section that forms a combustion space therein are arranged in a state of being partitioned by heat transferable partition walls,
A reforming burner that burns combustion fuel in the combustion space and heats the reforming catalyst layer of the reforming unit has one of both end portions facing each other in the direction along the wall surface of the partition wall in the combustion unit. It is equipped to form a flame from the end side toward the other end side,
A reformer configured to reform a hydrocarbon-based raw fuel by the action of the reforming catalyst and generate a reformed gas mainly composed of hydrogen gas in the reforming unit; There,
A heating distribution changing means capable of changing a heating distribution for heating the reforming catalyst layer by the reforming burner along a heating distribution changing direction in which both ends of the partition walls are arranged;
A temperature distribution change detecting means for detecting a temperature distribution change in which the temperature distribution in the direction along the heating distribution change direction in the reforming catalyst layer has changed from an appropriate temperature distribution; and
When the temperature distribution change is detected by the temperature distribution change detection means, the control means for controlling the operation sets the heating distribution so that the temperature distribution detected by the temperature distribution change detection means approaches the appropriate temperature distribution. A reformer configured to control the operation of the heating distribution changing means to be changed. The reformer burner has a flame hole for injecting the combustion fuel into the combustion space. The injection direction of the combustion fuel is in the direction along the heating distribution change direction and the heating distribution change direction. In a form that is different from the direction inclined to the side, or a form that is different along the heating distribution change direction, a plurality of positions are provided,
A fuel injection form changing means capable of changing a flame hole for injecting the combustion fuel among the plurality of flame holes is provided,
The reforming apparatus according to claim 1, wherein the heating distribution changing means includes the fuel ejection form changing means. The plurality of flame holes are arranged in a line along a flame hole alignment direction along a direction perpendicular to the alignment direction of the both end portions of the wall surface of the partition wall, and the combustion fuel is directed along the heating distribution changing direction. A plurality of direct-injection flame holes, and a plurality of the fuel-injection fuels arranged in a line along the flame-hole arrangement direction and injecting the combustion fuel in a direction inclined toward the partition wall with respect to the heating distribution change direction With an inclined jet flame hole,
As the fuel injection form changing means, the combustion from the direct injection flame hole row in which a plurality of the direct injection flame holes are arranged in a line and the inclined injection flame hole row in which the plurality of the inclined injection flame holes are arranged in a line The reformer according to claim 2, further comprising a fuel ejection switching means capable of intermittently ejecting the fuel. The plurality of flame holes are arranged in a line along a flame hole alignment direction along a direction perpendicular to the alignment direction of the both end portions of the wall surface of the partition wall, and the combustion fuel is directed along the heating distribution changing direction. A plurality of flame hole rows composed of a plurality of flame holes to be ejected are provided along the heating distribution change direction,
The reformer according to claim 2, wherein fuel injection switching means capable of intermittently injecting the combustion fuel from each of the plurality of flame hole arrays is provided as the fuel injection form changing means.   2. The temperature distribution change detection means is provided with a plurality of temperature detection means that are arranged side by side along the heating distribution change direction and that detect the temperature of the reforming catalyst layer. The reformer of any one of -4.   The temperature distribution change detection means includes a component concentration detection means for detecting the concentration of the specific component in the reformed gas generated in the reforming unit, and the specific component detected by the component concentration detection means The reforming apparatus according to any one of claims 1 to 4, wherein the reforming device is configured to detect the temperature distribution change based on the fact that the concentration of the gas deviates from an appropriate range.

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