JP2002356309A - Operation control method for generation apparatus for gas containing hydrogen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation control method for a generation apparatus for gas containing hydrogen capable of operating a reforming section, a modifying section and a selective oxidation section by easy controls while maintaining to respectively proper temperatures. SOLUTION: A cooling means 10 of a selective oxidation section which cools a selective oxidation section 6 is provided. A reforming section 3, a modifying section 5 and the selective oxidation section 6 are provided so that adjacent sections can conduct heat to each other, and the modifying section 5 is located between the reforming section 3 and the selective oxidation section 6. A heating capacity of the heating means 4 of the reforming section is controlled so that a proper temperature for a reformation treatment of the reforming section 3 is maintained and further, a cooling capacity of the cooling means 10 of the selective oxidation section is controlled so that the proper temperature for a selective oxidation treatment of the selective oxidation section 6 is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reforming method in which a hydrocarbon-based raw fuel gas is reformed into a gas containing hydrogen gas and carbon monoxide gas with steam by being heated by a reforming section heating means. Unit, a conversion unit that performs a conversion process by converting the reforming gas supplied from the reforming unit into a carbon monoxide gas in the reforming gas, and a conversion unit that is supplied from the conversion unit. The present invention relates to a method for controlling the operation of a hydrogen-containing gas generator provided with a selective oxidation unit for selectively oxidizing a shift gas by selectively oxidizing carbon monoxide in the shift gas.

[0002]

2. Description of the Related Art Such a hydrogen-containing gas generating apparatus reforms a hydrocarbon-based raw fuel gas into a gas containing a hydrogen gas and a carbon monoxide gas with steam in a reforming section, and converts the reformed gas. A shift treatment is carried out by converting carbon monoxide gas in the reformed gas into carbon dioxide gas in the shift conversion section, and the shift processing gas is selectively oxidized in the selective oxidation section to carbon monoxide in the shift processing gas. To generate a hydrogen-rich hydrogen-containing gas having a low carbon monoxide concentration (for example, 10 ppm or less). The generated hydrogen-containing gas is used, for example, as a fuel gas for a power generation reaction in a fuel cell. .

[0003] During the operation of the hydrogen-containing gas generator, the reforming section, the shift section, and the selective oxidizing section each have a proper temperature for the reforming process (hereinafter sometimes referred to as a reforming process temperature). It is necessary to maintain a temperature appropriate for the shift treatment (hereinafter sometimes referred to as a shift temperature) and a temperature appropriate for the selective oxidation process (hereinafter sometimes referred to as a selective oxidation temperature). Incidentally, the reforming treatment temperature is, for example, 6
In the range of 00 to 700 ° C., the conversion temperature is 150
~ 250 ° C, selective oxidation treatment temperature is 80 ~ 100
° C.

Therefore, conventionally, in an operation control method for operating the reforming section, the shift section, and the selective oxidation section to maintain the reforming temperature, the shift temperature, and the selective oxidation temperature, respectively, a shift control method is employed. A reforming section heating means for heating the section and a transformation section cooling means for cooling the transformation section; and a selective oxidizing section heating means for heating the selective oxidizing section and a selective oxidizing section cooling means for cooling the selective oxidizing section. Adjusting the heating capacity of the reforming section heating means so as to maintain the section at the reforming treatment temperature,
The heating capacity of the metamorphic section heating means and the cooling capacity of the metamorphic section cooling means are adjusted so as to maintain the metamorphic section at the metamorphic processing temperature, and the selective oxidizing section is heated so as to maintain the selective oxidizing section at the selective oxidizing temperature. The heating capacity of the means and the cooling capacity of the cooling means for the selective oxidation section were adjusted.

[0005]

Therefore, in the conventional operation control method, in order to maintain the reforming section, the shift section, and the selective oxidation section at the reforming temperature, the shift temperature, and the selective oxidation temperature, respectively, Complicated control is required, such as individually controlling the temperatures of the reforming section, the shift section, and the selective oxidation section, and improvements have been desired.

The present invention has been made in view of such circumstances, and has as its object to operate the reforming unit, the shift unit, and the selective oxidizing unit at appropriate temperatures by simple control. It is an object of the present invention to provide a method for controlling the operation of a hydrogen-containing gas generator capable of reducing the pressure.

[0007]

Means for Solving the Problems [Invention according to claim 1]
The feature of the operation control method of the hydrogen-containing gas generating device according to claim 1 is that a selective oxidizing unit cooling unit that cools the selective oxidizing unit is provided, and the reforming unit, the shift unit, and the selective oxidizing unit are provided. The shift unit is located between the reforming unit and the selective oxidizing unit, and is provided so as to be able to conduct heat between adjacent ones, so that the reforming unit is maintained at a temperature appropriate for the reforming process. To adjust the heating capacity of the reforming section heating means, and
The cooling capacity of the selective oxidation unit cooling means is adjusted so that the selective oxidation unit is maintained at a temperature appropriate for the selective oxidation treatment. That is, the inventors of the present invention, the reforming temperature, the shift temperature and the selective oxidation temperature, the reforming temperature is the highest, the selective oxidation temperature is the lowest,
In view of the fact that the temperature of the shift treatment is between the temperature of the reforming treatment and the temperature of the selective oxidation treatment, intensive research was conducted to simplify the operation control method. Then, between the reforming unit, the shift unit and the selective oxidation unit, the reforming unit that needs to be maintained at the highest temperature and the selective oxidation unit that needs to be maintained at the lowest temperature, A metamorphic section that needs to be maintained at a temperature between the temperature of the selective oxidizing section is located and provided so as to be able to conduct heat between adjacent ones, so that the reforming section, the metamorphic section, and the selective oxidizing section are provided. In the state where is provided, by appropriately setting the heat transfer state between adjacent ones, only the reforming unit and the selective oxidation unit are each controlled to an appropriate temperature, and the shift unit does not control the temperature. It has been found that each can be maintained at an appropriate temperature. That is, as shown in FIG. 10, the reforming section 3 which needs to be maintained at the highest temperature
And the selective oxidizing unit 6 that needs to be maintained at the lowest temperature, the shift unit 5 that needs to be maintained at a temperature between the temperature of the reforming unit 3 and the temperature of the selective oxidizing unit 6 is located. ,and,
When provided so that heat can be transferred between adjacent members, FIG.
As shown by an arrow in FIG. 5, heat is transferred from the reforming section 3 to the selective oxidizing section 6 and is radiated from the selective oxidizing section 6.
In FIG. 10, reference numeral 4 denotes a combustion unit as a combustion-type reforming unit heating unit for heating the reforming unit 3, and 10 denotes a cooling unit as a selective oxidation unit cooling unit for cooling the selective oxidation unit 6. I'm a fan. Then, by appropriately setting the heat transfer state between adjacent ones, in FIG. 10, between the reforming unit 3 and the shift unit 5, and between the shift unit 5 and the selective oxidation unit 6 as appropriate, A cooling fan as a selective oxidizing unit cooling means so as to adjust the heating capacity of the combustion unit 4 so as to maintain the reforming unit 3 at the reforming temperature and to maintain the selective oxidizing unit 6 at the selective oxidizing temperature. By simply adjusting the cooling capacity by adjusting the air volume of 10, the shift section 5 located between the reforming section 3 and the selective oxidizing section 6 becomes the shift processing temperature without controlling the temperature. You can do it. In short, with a simple control that only controls the temperature of the reforming section and the temperature of the selective oxidizing section, the reforming section, the shift section, and the selective oxidizing section are set to the reforming process temperature, the shift process temperature, and the selective oxidation process temperature, respectively. Can now be maintained. Therefore,
It has become possible to provide an operation control method for a hydrogen-containing gas generator capable of operating the reforming section, the shift section, and the selective oxidation section at appropriate temperatures with simple control.

The invention of claim 2 is characterized in that the operation control method of the hydrogen-containing gas generator according to claim 2 is characterized in that the reforming section heating means is configured to be a combustion type for burning gaseous fuel,
On the side of the reforming section opposite to the side where the shift section is provided, supplied water is heated by combustion gas discharged from the combustion-type reforming section heating means, and the reforming section is heated. In providing a steam generating section for generating steam for the reforming process in the above. According to the operation control method of the second aspect, the reforming section heating means is configured to be a combustion type that burns gaseous fuel, and water supplied from the combustion type reforming section heating means in the steam generation section. Since the steam is heated by the discharged combustion gas to generate the steam for the reforming process in the reforming section, the steam for the reforming process can be generated without consuming extra energy. In addition, since the steam generation section is provided on the side of the reforming section opposite to the side on which the shift section is provided, heat radiation from the reforming section can be suppressed. The consumption can be reduced. Therefore, it is possible to provide a specific configuration that is preferable in that the operation can be performed to improve the energy efficiency and generate the hydrogen-containing gas.

The invention of claim 3 is characterized in that the operation control method of the hydrogen-containing gas generator according to claim 3 is characterized in that the reforming section, the shift section and the selective oxidizing section have a flat outer shape. It is configured to be plate-shaped, and the plate-shaped modified portion, the metamorphic portion, and the selective oxidation portion are arranged side by side in the thickness direction. According to the operation control method according to claim 3, the outer shape is a flat plate-shaped reforming section, the metamorphic section, and the selective oxidation section, and the metamorphic section is located between the reforming section and the selective oxidation section,
And, since it is arranged in parallel in the thickness direction so that adjacent ones can conduct heat, the reforming section, the metamorphic section, and the selective oxidation section are transferred from the reforming section in a state where heat is transferred in the thickness direction. Heat is transferred toward the selective oxidation section. In other words, the reforming section, the shift section, and the selective oxidation section are arranged in parallel so that the shift section is located between the reforming section and the selective oxidation section, and adjacent ones can conduct heat, and adjacent ones By appropriately setting the heat transfer state of the reforming section and the selective oxidizing section, only by controlling each to an appropriate temperature, the shift section can be maintained at an appropriate temperature. As described above, the reforming section, the metamorphic section, and the selective oxidation section are each configured in a flat plate shape, and are arranged side by side in the thickness direction, so that the transmission in each section of the reforming section, the metamorphic section, and the selective oxidation section is performed. Shorten the heat path,
The temperature gradient along the heat transfer path can be reduced, and the temperature distribution in each section can be reduced. Therefore, since the reforming unit, the shift unit, and the selective oxidation unit can be operated while maintaining the respective temperatures at appropriate temperatures while reducing the temperature distribution, a specific configuration preferable for implementing the operation control method of the present invention. Can be provided.

[0010] The feature of the operation control method of the hydrogen-containing gas generator according to claim 4 is that the desulfurization source desulfurized by the desulfurization unit for desulfurizing a hydrocarbon-based raw fuel gas. Fuel gas is supplied as a hydrocarbon-based raw fuel gas to be reformed in the reforming section, and the desulfurizing section and the shift section are arranged between the reforming section and the selective oxidation section,
Another object of the present invention is to provide heat transfer between adjacent components. That is, the inventors of the present invention convert the desulfurized raw fuel gas desulfurized in the desulfurizing section for desulfurizing the hydrocarbon raw fuel gas into a hydrocarbon-based raw fuel gas reformed in the reforming section. When supplying, at the reforming treatment temperature, the temperature suitable for desulfurization treatment (hereinafter sometimes referred to as desulfurization treatment temperature), the shift treatment temperature and the selective oxidation treatment temperature,
The operation control method is simplified in view of the fact that the reforming treatment temperature is the highest, the selective oxidation treatment temperature is the lowest, and the desulfurization treatment temperature and the shift treatment temperature are between the reforming treatment temperature and the selective oxidation treatment temperature. I researched hard to make it. Incidentally, the desulfurization treatment temperature is, for example, in a range of 150 to 270 ° C. Then, the reforming section, the desulfurization section, the shift section, and the selective oxidation section are placed between the reforming section that needs to be maintained at the highest temperature and the selective oxidation section that needs to be maintained at the lowest temperature. The desulfurization unit and the shift unit which need to be maintained at a temperature between the temperature of the selective oxidation unit and the temperature of the selective oxidation unit are located, and provided so as to be able to transfer heat between adjacent ones, so that the reforming unit, With the desulfurization unit, shift unit, and selective oxidation unit provided, the heat transfer state between adjacent units is appropriately set, so that only the reforming unit and the selective oxidation unit are controlled to appropriate temperatures, respectively. It has been found that the section and the metamorphic section can each be maintained at an appropriate temperature without controlling the temperature.
That is, as shown in FIG. 9, between the reforming section 3 which needs to be maintained at the highest temperature and the selective oxidation section 6 which needs to be maintained at the lowest temperature, the temperature of these reforming sections 3 and the selective oxidation Part 6
When the desulfurization unit 1 and the shift unit 5 that need to be maintained at a temperature between the above and the temperature are located and provided so as to be able to conduct heat between adjacent ones, as shown by arrows in FIG.
The heat is transferred from the reforming section 3 to the selective oxidation section 6, and is radiated from the selective oxidation section 6. In FIG. 9, reference numeral 4 denotes a combustion unit as a combustion-type reforming unit heating unit that heats the reforming unit 3, and 10 denotes a cooling unit as a selective oxidation unit cooling unit that cools the selective oxidation unit 6. I'm a fan. Then, adjacent ones, in FIG. 9, between the reforming unit 3 and the desulfurization unit 1, between the desulfurization unit 1 and the shift unit 5, and between the shift unit 5 and the selective oxidation unit 6.
By appropriately setting the respective heat transfer states between the combustion section 4 and the combustion section 4 so that the reforming section 3 is maintained at the reforming processing temperature.
By simply adjusting the cooling capacity by adjusting the airflow of a cooling fan 10 as a selective oxidizing section cooling means so as to maintain the selective oxidizing section 6 at a selective oxidizing treatment temperature by adjusting the heating capacity of the reforming sections, The desulfurization unit 1 and the shift unit 5 located between the unit 3 and the selective oxidation unit 6 can be controlled to the desulfurization temperature and the shift temperature, respectively, without controlling the temperature. . In short, with simple control just controlling the temperature of the reforming section and the temperature of the selective oxidation section,
The desulfurization section, reforming section, shift section, and selective oxidation section can be maintained at the desulfurization temperature, reforming temperature, shift temperature, and selective oxidation temperature, respectively. Therefore, it is possible to provide an operation control method of the hydrogen-containing gas generator capable of operating the desulfurization unit, the reforming unit, the shift unit, and the selective oxidation unit at appropriate temperatures with simple control. It became so.

The invention according to claim 5 is characterized in that the operation control method for the hydrogen-containing gas generator according to claim 5 is characterized in that a plurality of the desulfurization units and the shift units are respectively provided, and the desulfurization unit and the shift unit Are arranged so as to be alternately arranged and so that adjacent ones can conduct heat. According to the operation control method according to claim 5, a plurality of desulfurization units and a plurality of shift units are respectively provided so that the desulfurization unit and the shift unit are alternately arranged, and the adjacent units can conduct heat. A plurality of desulfurization units perform a desulfurization process on a hydrocarbon-based raw fuel gas, and a plurality of shift units perform a shift process on a reformed gas. In other words, since the desulfurization treatment temperature and the shift treatment temperature are in the same temperature range, a plurality of desulfurization units and shift units are respectively provided, so that the desulfurization unit and the shift unit are alternately arranged, and between adjacent units. By providing heat conduction, only the appropriate temperature of the reforming section and the selective oxidizing section is controlled, and each of the plurality of desulfurizing sections and the plurality of shift sections is appropriately controlled without controlling the temperature. Temperature, and the desulfurization processing of hydrocarbon-based raw fuel gas in these multiple desulfurization sections improves desulfurization processing capacity, and the reforming processing gas is reformed in multiple shift sections. By doing so, the metamorphic treatment capacity can be improved. Moreover, by providing a plurality of desulfurization units and a plurality of shift units, such that the desulfurization unit and the shift unit are alternately arranged,
A plurality of desulfurization units are connected by pipes so that the gas to be treated flows sequentially, and a plurality of conversion units are connected by pipes so that the gas to be processed flows sequentially. Since it is possible to increase the length of the pipeline connecting the components arranged in the order of the flow paths, the pipeline connection work is facilitated and the cost can be reduced. By the way,
When a plurality of desulfurization units and a plurality of shift units are provided so that the desulfurization units are collectively adjacent to each other, and the shift units are collectively adjacent to each other, it is necessary to connect the adjacent ones by a pipeline, The length of the pipeline to be connected is shortened, and the pipeline connection work becomes difficult. Therefore, it has become possible to provide an operation control method of the hydrogen-containing gas generation device that can be operated with a simple control so as to improve the desulfurization processing capacity and the shift processing capacity while reducing the cost.

The invention according to claim 6 is characterized in that the operation control method of the hydrogen-containing gas generator according to claim 6 is characterized in that the desulfurization raw fuel gas from the desulfurization section and the reforming processing gas from the reforming section. And a heat exchange unit for exchanging heat between the reforming unit and the desulfurization unit or the shift unit. According to the operation control method of the sixth aspect, the desulfurization raw fuel gas from the desulfurization section and the reforming from the reforming section are provided in the heat exchange section provided between the reforming section and the desulfurization section or the shift section. Heat exchange with the processing gas is performed to preheat the desulfurization raw fuel gas and supply it to the reforming section, and also cool the reforming processing gas and supply it to the shift section. In other words, the temperature of the desulfurized raw fuel gas discharged from the desulfurization unit is close to the temperature of the desulfurization unit, and the difference from the temperature of the reforming unit to which the desulfurized raw fuel gas is supplied is large. The reforming gas discharged from the reforming section has a temperature close to the temperature of the reforming section, and has a large temperature difference from the shift section to which the reforming gas is supplied. Therefore, by performing heat exchange between the desulfurization raw fuel gas discharged from the desulfurization unit and the reforming process gas discharged from the reforming unit in the heat exchange unit, extra energy is required to preheat the desulfurization raw fuel gas. Preheating the desulfurization raw fuel gas without consuming it and without wasting heat to cool the reforming gas, and supplying it to the reforming unit with a small temperature difference from the reforming unit Can be done,
The reforming process gas can be cooled and supplied to the shift unit in a state where the temperature difference with the shift unit is reduced. In addition, the temperature of each fluid flowing into and out of the heat exchange section is within or close to the range between the temperature of the reforming section and the temperature of the desulfurization section or the shift section. Is provided between the reforming section and the desulfurization section or the shift section, so that the temperature of the reforming section, the temperature of the desulfurization section or the shift section can be easily maintained at an appropriate temperature, respectively. It is easy to maintain the temperature of each part of the generator at an appropriate temperature. Therefore, it is possible to operate while maintaining the temperatures of the desulfurization unit, the reforming unit, the shift unit, and the selective oxidation unit more accurately while improving the energy efficiency and generating the hydrogen-containing gas. The above preferred embodiment can be provided.

The invention of claim 7 is characterized in that the operation control method of the hydrogen-containing gas generator according to claim 7 is characterized in that the reforming section, the desulfurization section, the shift section, and the selective oxidation section include:
The outer shape is configured to be a flat plate, and the plate-shaped reforming section, the desulfurization section, the metamorphic section, and the selective oxidation section are arranged side by side in the thickness direction. According to the operation control method described in claim 7, the outer shape of the flat plate-shaped reforming section, desulfurizing section, metamorphic section and selective oxidation section, the desulfurization section and the selective oxidation section between the reforming section and the selective oxidation section. Since the metamorphic section is located and juxtaposed in the thickness direction so that adjacent parts can conduct heat to each other, each section of the reforming section, desulfurization section, metamorphic section, and selective oxidation section is transmitted in the thickness direction. In the heated state, heat is transferred from the reforming section to the selective oxidation section. In other words, the reforming unit, the desulfurization unit, the shift unit, and the selective oxidation unit are arranged in parallel, where the desulfurization unit and the shift unit are located between the reforming unit and the selective oxidation unit, and the adjacent units can conduct heat. Then, by appropriately setting the heat transfer state between the adjacent ones, simply controlling the reforming unit and the selective oxidizing unit to appropriate temperatures, respectively, maintains the desulfurizing unit and the shift unit at the appropriate temperatures. As described above, the reforming section, the desulfurization section, the metamorphic section, and the selective oxidation section are each configured as a flat plate, and are arranged side by side in the thickness direction, as described above. The heat transfer path in each section of the section, the desulfurization section, the shift section, and the selective oxidation section can be shortened to reduce the temperature gradient along the heat transfer path, thereby reducing the temperature distribution in each section. Therefore, the desulfurization unit, the reforming unit, the shift unit, and the selective oxidation unit can be operated while maintaining the respective temperatures at appropriate temperatures while reducing the temperature distribution, so that the operation control method of the present invention can be implemented. Preferred embodiments can be provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment in which the present invention is applied to a hydrogen-containing gas generator for a fuel cell will be described below with reference to the drawings. As shown in FIG. 1, a hydrogen-containing gas generator P includes a desulfurization unit 1 for desulfurizing a hydrocarbon-based raw fuel gas such as a supplied natural gas.
And a steam generation unit S for heating the supplied raw water to generate steam, and a desulfurization raw fuel supplied from the desulfurization unit 1 by being heated by the combustion unit 4 serving as a combustion-type reforming unit heating unit. A reforming section 3 for reforming the gas into a gas containing hydrogen gas and carbon monoxide gas using steam generated by the steam generating section S; A shift section 5 for shift conversion by converting a carbon oxide gas into a carbon dioxide gas using water vapor, and a selective oxidation treatment by selectively oxidizing a carbon monoxide gas in the shift processing gas supplied from the shift section 5. And a control unit C for controlling the operation of the hydrogen-containing gas generating apparatus so that the concentration of carbon monoxide gas is low (for example, 10 ppm).
The following is configured to generate a hydrogen-rich hydrogen-containing gas.

In the desulfurization section 1, for example, 150 to 27
At a desulfurization treatment temperature in the range of 0 ° C., a sulfur compound in the raw fuel gas is hydrogenated by a desulfurization catalyst, and the hydride is adsorbed by zinc oxide to be desulfurized. Incidentally, the desulfurization reaction in the desulfurization unit 1 is an exothermic reaction.

In the reforming section 3, when natural gas mainly composed of methane gas is the raw fuel gas, the reforming catalyst is catalyzed by a reforming catalyst and has a reforming temperature of, for example, 600 to 700 ° C. Then, the methane gas and the steam undergo a reforming reaction according to the following reaction formula, and are reformed into a gas containing hydrogen gas and carbon monoxide gas. Incidentally, the reforming reaction in the reforming section 3 is an endothermic reaction.

[0017]

Embedded image CH ₄ + H ₂ O → CO + 3H ₂

In the shift unit 5, the carbon monoxide gas and the steam in the reforming gas are reacted by the catalytic action of the shift catalyst at the shift reaction temperature of, for example, 150 to 250 ° C. The carbon monoxide gas is converted into carbon dioxide gas by a conversion reaction according to the formula. Incidentally, the metamorphic reaction in the metamorphic section 5 is an exothermic reaction.

[0019]

## STR2 ## CO + H ₂ O → CO ₂ + H ₂

In the selective oxidation section 6, the catalytic conversion of a noble metal-based conversion catalyst such as platinum, ruthenium, rhodium or the like causes the catalyst remaining in the conversion processing gas at a selective oxidation processing temperature in the range of 80 to 100 ° C., for example. Carbon monoxide gas is selectively oxidized. Incidentally, the oxidation reaction in the selective oxidation section 6 is an exothermic reaction.

The hydrogen-containing gas generated by the hydrogen-containing gas generator is supplied to the fuel cell G through the fuel gas passage 23 as a fuel gas. Although the detailed description is omitted, the fuel cell G is a solid polymer type using a polymer membrane as an electrolyte. The fuel cell G includes hydrogen in the fuel gas supplied from the hydrogen-containing gas generator P and a blower (not shown). Is generated by an electrochemical reaction with oxygen in the reaction air supplied from the reactor.

The combustion section 4 is discharged from the fuel cell G,
In burning off-gas, which is a fuel gas supplied through the off-gas passage 24, as gas fuel, and heating the reforming unit 3 so that the reforming process can be performed, the shortage of the off-gas alone is supplied through the gas fuel supply passage 37. City gas (13A or the like) to be burned as gas fuel.

The steam generating section S is provided with a steam generating heating flow section 11 through which the combustion gas discharged from the combustion section 4 flows.
And an evaporating section 2 for evaporating the supplied raw water by heating by the heating flow section 11 for steam generation.

Further, the high-temperature reforming gas discharged from the reforming section 3 is passed through the hydrogen-containing gas generator P,
Heat exchange passage 7 for keeping the temperature of the reforming section 3, and heat exchange between the desulfurized raw fuel gas from the desulfurizing section 1 and the high-temperature reforming processing gas from the reforming section 3, and supply to the reforming section 3. Desulfurization raw fuel gas heat exchanger Ep (corresponding to a heat exchange section) for preheating the desulfurization raw fuel gas to be heated, the high-temperature reforming processing gas from the reforming section 3 and the raw fuel supplied to the desulfurization section 1 A heat exchanger Ea for raw fuel gas for preheating the raw fuel gas by exchanging heat with the gas, and a flow passage for cooling 8 for a cooling unit for cooling the cooling unit 5 to cool the shift unit 5 A cooling section flow passage 9 through which a cooling fluid flows to cool the section 5;
Cooling fan 1 as cooling means for selective oxidation unit for cooling
0 is provided. Further, a heat exchanger 17 for preheating a raw water is provided for preheating the raw water by exchanging heat between the metamorphic processing gas discharged from the metamorphic section 5 and the raw water supplied to the steam generating section S.

The desulfurization raw gas heat exchanger Ep is supplied to the upstream reforming gas passage 12 through which the reforming gas discharged from the heat retaining passage 7 flows, and to the reforming section 3. And a desulfurization raw fuel gas flow portion 13 through which the heat of the desulfurization raw fuel gas to flow is provided so as to freely exchange heat.
Is a downstream reforming gas passage 15 through which the reforming gas discharged from the upstream reforming gas passage 12 flows.
And a raw fuel gas flow section 16 through which the raw fuel gas supplied to the desulfurization section 1 flows is provided so as to freely exchange heat.

At the time of start-up, a desulfurization section heater 32 for heating the desulfurization section 1 so as to be capable of desulfurization and two shift section heaters 33 for heating the shift section so as to be capable of shift processing are provided. Reference numerals 32 and 33 comprise electric heaters.

In the first embodiment, the reforming unit 3, the desulfurization unit 1, the shift unit 5, and the selective oxidation unit 6 are provided, and the desulfurization unit 1 and the shift unit 5 are provided between the reforming unit 3 and the selective oxidation unit 6. Located and
Provided so as to be able to conduct heat between adjacent ones,
The heating capacity of the combustion unit 4 is adjusted so as to maintain the temperature at a temperature appropriate for the reforming process, and the ventilation of the cooling fan 10 is controlled so as to maintain the selective oxidation unit 6 at a temperature appropriate for the selective oxidation process. By adjusting the cooling capacity by adjusting the amount, the heat transfer state between the adjacent ones is set in advance so that the desulfurization unit 1 and the shift unit 5 have an appropriate temperature for each treatment.

In addition, as shown in FIG. 1, the hydrogen-containing gas generator P is provided with a plurality of rectangular flat plates B arranged side by side in the thickness direction of the flat plate. Using them, a desulfurization unit 1, a reforming unit 3, a combustion unit 4, a shift unit 5, a selective oxidizing unit 6, a steam generation unit S, and respective flow units are respectively configured. Part of the plurality of containers B is constituted by a single-chamber-equipped container Bm formed to have one chamber, and the rest is a twin-chamber-equipped container Bd formed to have two partitioned chambers. It consists of.

As shown in FIG. 2, the double-chambered container Bd comprises:
With the flat partition member 43 positioned between the pair of dish-shaped container forming members 41, the peripheral portions are welded and connected to form two flat chambers, and as shown in FIG. In the chamber-equipped container Bm, a dish-shaped container forming member 41 and a flat-plate-shaped container forming member 42 are welded and connected at their peripheral portions to form one flat chamber. A connection nozzle 44 for fluid supply or fluid discharge is attached to each of the single-chamber-equipped containers Bm and each of the double-chamber-equipped containers Bd so as to communicate with the internal chambers as necessary. Although not shown, if necessary, the chamber of the container B is configured to have a meandering flow path, and the flow path of the fluid is lengthened.

As shown in FIG. 1, in the first embodiment, eight double-chambered containers Bd and one single-chambered container Bm are provided in a third single-chamber from the left end in a side view. In a state where the container Bm is positioned, the container Bm is provided side by side in the thickness direction to be compact. In order to clarify the distinction between the eight twin-chamber-equipped containers Bd, for the sake of convenience, the code Bd indicating the twin-chamber-equipped container is followed by the reference numeral 1 indicating the arrangement order from the left.
2, 3 ... 8

The steam generating section S is constituted by the double-chambered container Bd1 at the left end, and the portion of the double-chambered container Bd1 provided with the left chamber is used as the heating flow section 11 for steam generation.
And the evaporating section 2 is formed by using the portion provided with the chamber on the right side.
In both chambers, a heat transfer promoting material made of stainless steel wool or the like is filled in a permeable state. The combustion unit 4 is configured using a portion including the left chamber of the second double chamber-equipped container Bd2 from the left, and the reforming unit 3 is configured using a portion including the right chamber. The left chamber constituting the combustion section 4 is configured as a combustion chamber, and a reforming burner 4b is provided so as to burn gas fuel in the combustion chamber. A large number of porous ceramic particles holding reforming catalysts such as ruthenium, nickel and platinum are filled in a gas-permeable state. Using the single-chamber-provided container Bm, the heat-passing flow passage 7 is formed.

The upstream reforming gas flow section 12 is formed by using the left chamber of the third double chamber-equipped container Bd3 from the left, and is formed by using the section having the right chamber. , A desulfurization raw fuel gas flow section 13. Both chambers are filled with a heat transfer promoting material made of stainless steel wool or the like in a permeable state.

The desulfurization unit 1 is constituted by using the portion provided with the left chamber of the fourth double-chamber container Bd4 from the left, and the raw fuel gas passage is formed by using the portion provided with the right chamber. 16 are constituted. A large number of ceramic porous granules holding a desulfurization catalyst are filled in the left chamber constituting the desulfurization unit 1 in a gas-permeable state.

A portion of the fifth double chamber-equipped container Bd5 from the left having the left chamber is used to form the downstream reforming gas flow section 15, and a portion having the right chamber is used. , A shift unit 5. Sixth double-chambered container Bd6 from the left
The metamorphic unit 5 is constituted by using the portion provided with the left chamber of
Using the portion provided with the right side chamber, the flow passage 8 for cooling the metamorphic section
Is configured. The metamorphic unit 5 is configured using the seventh double-chambered container Bd7 from the left. Each of the chambers constituting the metamorphic section is filled with a large number of porous ceramic particles holding a metamorphic reaction catalyst of iron oxide or copper zinc in a gas-permeable state. In other words, the metamorphic unit 5 includes the fifth twin-chamber container Bd5 from the left and the sixth twin-chamber container Bd from the left.
6 and the seventh twin chamber-equipped container Bd7 from the left, and three transformation units 5 are provided.

The eighth (right end) double-chambered container Bd from the left
The portion provided with the left chamber of FIG. 8 constitutes the flow passage 9 for cooling the metamorphic section, and the portion provided with the right chamber constitutes the selective oxidation section 6. The interior of the chamber constituting the selective oxidation section 6 is filled with a large number of porous ceramic particles holding a ruthenium selective oxidation catalyst in a gas-permeable state.

That is, one side of the double-chamber container Bd2 constituting the combustion section 4 and the reforming section 3 is provided with the double-chamber container Bd
From the side 2, a single-chamber container B constituting the heat retaining flow passage 7
m, a heat insulator 19, an upstream reforming gas flow portion 12, and a desulfurization raw fuel gas flow portion 13, that is, a double-chambered container Bd3 constituting a desulfurization raw fuel gas heat exchanger Ep, a heat insulating material 19, and desulfurization. Twin chamber-equipped container Bd4 constituting the section 1 and the raw fuel gas flow section 16, the downstream reforming gas flow section 15 and the shift section 5
The twin chamber-equipped container Bd5, the metamorphic unit 5, the metamorphic unit 5, and the metamorphic unit cooling passage 8
Bd7 with a double chamber, flow passage 9 for cooling the metamorphic section
And the twin chamber-equipped container Bd8 constituting the selective oxidizing section 6 is provided so as to be closely arranged to be arranged in the stated order, and on the other side of the twin chamber-equipped container Bd2,
Insulating material 19, twin-chamber-equipped container B constituting steam generating section S
d1 are arranged closely in order to be described.

The desulfurization section heater 32 is provided between the fourth double chamber-equipped container Bd4 from the left constituting the desulfurization section 1 and the heat insulating material 19 adjacent thereto.
Are the fifth double chamber-equipped container Bd5 from the left that constitutes the first stage transformation unit 5 and the sixth from the left that constitutes the second stage transformation unit 5
It is provided between the second twin-chamber-equipped container Bd6 and the other transformation unit heater 33, which is the seventh stage transformation unit 5 from the left.
It is provided between the eighth twin chamber-equipped container Bd8 and the eighth (right end) twin chamber-equipped container Bd8 from the left, which constitutes the cooling section cooling passage 9 and the selective oxidation section 6.

As shown in FIGS. 4 and 5, the hydrogen-containing gas generating apparatus P includes a plurality of containers B and a heat insulating material 19 arranged side by side as described above. The holding plates 49 are separately attached to each other, and the pair of holding plates 49 are connected to each other by six sets of screw-type connecting means to be integrally assembled. The screw type connecting means includes a bolt 45, a pair of nuts 46, and a pair of spring washers 47. Each holding plate 49 is formed in an L shape, and each holding plate 49 is reinforced by two reinforcing ribs 48. Then, in a state in which both ends of the bolt 45 are inserted into the holding plate 49, by tightening the nuts 46 from both sides via the spring washers 47, the relative movement in the direction orthogonal to the direction in which the plurality of containers B are arranged. Pressing from both sides in the arrangement direction is allowed. Further, the expansion and contraction of the containers B in the arrangement direction is allowed by the expansion and contraction of the spring washer 47. Note that the hydrogen-containing gas generator P is installed with the pair of holding plates 49 standing upright and supported by the pair of holding plates 49.

In FIG. 1, the raw fuel gas supply passage 21 is connected to the raw fuel gas heat exchanger Ea as indicated by the white arrow.
And the raw fuel gas flow section 16, the desulfurization section 1, and the desulfurized raw fuel gas heat exchanger Ep.
Of the desulfurization raw fuel gas, the reforming section 3, the heat retaining flow section 7, the upstream reforming gas flow section 12 of the desulfurization raw fuel gas heat exchanger Ep, the raw fuel gas heat exchanger Ea downstream reforming gas flow section 15, three-stage conversion section 5, selective oxidation section 6
These are connected by a gas processing channel 22 so as to form a gas processing path flowing in the order of.

The raw fuel gas supply passage 21 is provided with a raw fuel gas interrupting valve 20 for interrupting the supply of the raw fuel gas to the hydrogen-containing gas generator. A raw water preheating heat exchanger 17 for preheating raw water flowing through a raw water supply passage 25 to be described later with a metamorphic processing gas is provided in a gas processing flow path 22 connecting the last stage shift section 5 and the selective oxidation section 6. And a drain trap 34 for removing condensed water from the shift gas is provided downstream of the raw water preheating heat exchanger 17.

The selective oxidizing unit 6 and the fuel cell G are connected via a fuel gas passage 23 so that the selective oxidizing gas discharged from the selective oxidizing unit 6 is supplied to the fuel cell G as a fuel gas. The fuel cell G and the combustion unit 4 are connected to the off-gas passage 24 in order to supply the exhaust gas discharged from the
Connected. A check valve 39 for preventing a backflow of gas is provided in the off-gas passage 24, and a gas fuel supply passage 37 is connected to a portion of the off-gas passage 24 downstream of the check valve 39, and the gas fuel supply passage 37 is provided with a gas fuel supply amount adjusting valve 38 for adjusting the gas fuel supply amount.

In FIG. 1, as indicated by solid arrows,
A raw water supply passage 25 through which raw water for generating steam is sent from the raw water pump 14 is connected to the evaporating section 2 of the steam generating section S, and a steam path 26 for sending out the steam generated by the evaporating section 2 is connected. Is connected to a gas processing flow path 22 connecting the desulfurization unit 1 and the reformed gas flow part 13, and the reforming steam is mixed with the desulfurization raw fuel gas flowing through the gas processing flow path 22. It is configured so that

A heat exchanger 17 for preheating the raw water is provided in the middle of the raw water supply passage 25, and further, the raw water is supplied to a portion of the raw water supply passage 25 downstream of the heat exchanger 17 for preheating the raw water. A meandering flow portion 18 that flows in a meandering shape is provided, and the meandering flow portion 18 is provided so as to be able to conduct heat to a portion of the outer wall of the hydrogen-containing gas generator P that covers the combustion portion 4. Thus, the feed water flowing through the meandering flow portion 18 is preheated by conduction heat and radiant heat from the outer wall of the hydrogen-containing gas generator P.

In FIG. 1, as indicated by the dashed arrows,
The combustion gas discharged from the combustion unit 4 is caused to flow in the order of the heating flow unit 11 for steam generation and the flow unit 8 for cooling the metamorphic unit.
The combustion section 4, the heating flow section 11 for steam generation, and the flow section 8 for cooling the metamorphic section are connected by a combustion gas passage 27. In the heating flow section 11 for steam generation, the evaporating section The fuel cell 2 is configured to be heated, and the metamorphic section cooling flow section 8 is configured to cool the metamorphic section 5 where the metamorphic reaction, which is an exothermic reaction, is performed by the combustion gas.

In FIG. 1, the air from the blower 28 is passed as the combustion air through the flow passage 9 for cooling the metamorphic section and then supplied to the combustion section 4 as indicated by the dashed-dotted arrow in FIG. , Blower 28, metamorphic section cooling passage 9, combustion section 4
Are connected by a combustion air passage 29, and the combustion air is passed around the metamorphic section cooling passage 9 so as to flow therethrough.
A combustion air bypass passage 30 is connected to the combustion air passage 29, and an oxidation air supply passage 31 connected to the blower 28 is finally connected so that air from the blower 28 is supplied to the selective oxidation unit 6 as oxidation air. It is connected to a gas processing channel 22 that connects the shift unit 5 and the selective oxidation unit 6 of the stage.

A cooling supply state in which combustion air is supplied to the combustion section 4 by flowing through the metamorphic section cooling passage 9;
In order to bypass the metamorphic cooling passage 9 and switch to the bypass supply state in which the gas is supplied through the combustion air bypass passage 30, air passage switching valves 35 and 36 are provided. A combustion air supply amount adjustment valve 40 that regulates the supply of combustion air to the combustion section 4 is provided at a location downstream of the bypass portion of the combustion air bypass passage 30. The air path switching on-off valves 35 and 36 are normally switched to the bypass supply state. However, when the cooling capacity of the shift unit 5 is insufficient, for example, at a high temperature in summer, the air supply switching valves 35 and 36 are switched to the cooling supply state to perform combustion. The metamorphic section 5 is cooled with the working air.

Further, a reforming section temperature sensor T1 for detecting the temperature of the reforming section 3 and a selective oxidizing section temperature sensor T2 for detecting the temperature of the selective oxidizing section 6 are provided. The reforming unit temperature sensor T1 is provided so as to detect the temperature near the outlet of the reforming gas in the reforming unit 3, and the selective oxidation unit temperature sensor T1 is provided.
Numeral 2 is provided so as to detect the temperature near the center in the plane direction in the flat selective oxidation section 6.

In short, the desulfurization unit 1, the reforming unit 3, the shift unit 5
And the selective oxidizing section 6 between the reforming section 3 which needs to be maintained at the highest temperature and the selective oxidizing section 6 which needs to be maintained at the lowest temperature. The desulfurization unit 1 and the shift unit 5 which need to be maintained at a temperature between the temperature of the selective oxidation unit 6 and the shift unit 5 are arranged side by side from the side of the reforming unit 3 in the stated order, and the adjacent ones can conduct heat. The combustion unit 3 and the steam generation unit S that needs to be maintained at a lower temperature than the combustion unit 3 on the side opposite to the side where the desulfurization unit 1 is provided in the reforming unit 3 are reformed in the order described. It is arranged from the side of the part 3 and provided so that heat can be transferred between adjacent parts.

Then, as indicated by arrows in FIG. 9, the reforming section 3 heated in the combustion section 4
, The heat is sequentially transmitted through the desulfurization unit 1 and the shift unit 5, heat is radiated from the selective oxidation unit 6, and heat is transmitted from the combustion unit 4 to the steam generation unit S.

On the other hand, the raw fuel gas supplied from the raw fuel gas supply passage 21 is preheated by heat exchange with the reforming gas in the raw fuel gas heat exchanger Ea, and then supplied to the desulfurization unit 1. After the desulfurization treatment, the desulfurization raw fuel gas is mixed with the steam from the steam passage 26, and then preheated by heat exchange with the reforming treatment gas in the desulfurization raw fuel gas heat exchanger Ep. 3 and heated in the combustion unit 3 to reform the gas. The reformed gas is cooled by heat exchange with the desulfurized raw fuel gas in the desulfurized raw fuel gas heat exchanger Ep. After performing heat exchange by heat exchange with the raw fuel gas in the raw fuel gas heat exchanger Ea, the raw fuel gas is supplied to the three-stage conversion unit 5 in order to convert the carbon monoxide gas into carbon dioxide gas and perform a conversion process. Then, the metamorphic processing gas is cooled by heat exchange with the raw water in the heat exchanger 17 for preheating the raw water. After, to selective oxidation treatment of carbon monoxide gas is selectively oxidized is supplied to the selective oxidation unit 6.

By the way, the metamorphic reaction in the metamorphic section 5 is as follows:
Since the reaction is an exothermic reaction, the reforming process gas supplied to the shift unit 5 has a temperature lower than the shift process temperature in the shift unit 5 in the desulfurization raw fuel gas heat exchanger Ep and the raw fuel gas heat exchanger Ea. In addition, for example, when the metamorphic treatment temperature is 250 ° C., it is cooled to about 200 ° C. Similarly, since the oxidation reaction in the selective oxidizing section 6 is also an exothermic reaction, the conversion gas supplied to the selective oxidizing section 6 is supplied to the raw water preheating heat exchanger 17 at a temperature lower than the selective oxidizing temperature in the selective oxidizing section 6. Cool down to even lower temperatures.

The combustion gas discharged from the combustion section 4 is
After the heat is passed through the steam-generating heating passage 11 to generate steam, the metamorphic section cooling passage 8 is cooled to cool the metamorphic section 5.

Therefore, in the state where the desulfurization unit 1, the reforming unit 3, the shift unit 5, and the selective oxidation unit 6 are arranged as described above, adjacent ones, that is, considering the flow of the fluid as described above, that is,
Between the reforming unit 3 and the desulfurization unit 1, between the desulfurization unit 1 and the shift unit 5, between the shift unit 5 and the selective oxidation unit 6, and between the combustion unit 4 and the steam generation unit S, respectively. Heat transfer state (heat transfer amount)
Is appropriately set, the heating capacity of the combustion unit 4 is adjusted so as to maintain the reforming unit 3 at the reforming processing temperature, and
By adjusting the air flow rate of the cooling fan 10 so that the selective oxidizing section 6 is maintained at the selective oxidizing treatment temperature, the reforming section 3 is controlled.
Desulfurization section 1 and shift section 5 located between
Can be maintained at the desulfurization treatment temperature and the shift treatment temperature, respectively, without controlling the temperature, and the steam generation unit S can be maintained at the appropriate temperature for the steam generation by reaction. It is.

That is, between the reforming section 3 and the desulfurizing section 1, the heat transfer amount is set by the heat insulating material 19, the heat exchanger Ep for desulfurized raw fuel gas and the heat insulating material 19 arranged in order from the reforming section 3 side. The amount of heat transfer is set between the desulfurization unit 1 and the shift unit 5 by the raw fuel gas heat exchanger Ea, and between the shift unit 5 and the selective oxidation unit 6
The heat transfer amount is set in the metamorphic section cooling flow section 9, and the heat transfer amount is set between the combustion section 4 and the steam generation section S by the heat insulating material 19.

Next, an operation control method for the hydrogen-containing gas generator P configured as described above will be described. When the hydrogen-containing gas generator P is started, since the off-gas is not supplied from the fuel cell G, the gas fuel supply amount adjusting valve 38
Is opened, the combustion unit 4 is burned with city gas supplied through the gas fuel supply path 37, and the reforming unit 3 is heated.
The heating operation of the desulfurization section heater 32 is performed to heat the desulfurization section 1, and the heating operation of the shift section heater 33 is performed to heat the shift section 5. The process is continued until the temperature detected by the sensor T1 reaches the preset reforming processing temperature.

When the start-up operation control is completed, the heater 32 for the desulfurization section and the heater 33 for the shift section are stopped, while the combustion in the combustion section 4 is continued, and the raw fuel gas interrupting valve 20 is opened to open the raw fuel gas. The gas supply is started and the raw water pump 1
4 to start supplying the raw water and start the gas generation operation for generating the hydrogen-containing gas. Thereafter, during the gas generation operation, the heater 32 for the desulfurization unit and the heater 33 for the shift unit were stopped. In this state, the off-gas discharged from the fuel cell G is burned in the combustion unit 4 to maintain the reforming unit 3 at the reforming processing temperature. It is supplied to the combustion section 3 and burned.

Next, an operation control method in the gas generation operation will be described. In the present invention, the heating capacity of the combustion unit 4 is adjusted so as to maintain the reforming unit 3 at the set reforming temperature, and the cooling is performed so as to maintain the selective oxidizing unit 6 at the set selective oxidizing temperature. The ventilation amount of the fan 10 is adjusted. Then, as described above, between the reforming unit 3 and the desulfurization unit 1, between the desulfurization unit 1 and the shift unit 5, between the shift unit 5 and the selective oxidation unit 6, and between the combustion unit 4 and the steam generation unit. Since the respective heat transfer amounts with the section S are set, the desulfurization section 1 and the shift section 5 can be maintained at the desulfurization processing temperature and the shift conversion temperature, respectively, without controlling the temperature. In addition, the temperature of the steam generation section S can be maintained at a temperature suitable for steam generation.

In the present invention, the operation control in the start-up operation and the operation control in the gas generation operation as described above are automatically performed by using the control unit C. Hereinafter, the control operation when the control unit C executes the operation control in the gas generation operation will be described. Control unit C
The gas fuel supply amount adjusting valve 3 is controlled so that the temperature detected by the reforming section temperature sensor T1 becomes a preset reforming processing temperature.
8 and the combustion air supply amount adjustment valve 40 are controlled to adjust the heating capacity of the combustion unit 4 and to make the detection temperature of the selective oxidation unit temperature sensor T2 equal to a preset selective oxidation treatment temperature. The operation of the cooling fan 10 is controlled to adjust the amount of cooling air, that is, the cooling capacity.

To further explain the adjustment of the heating capacity of the combustion section 4, when the heating capacity is increased, for example, the gas fuel supply amount adjusting valve 38 is increased so as to increase the supply amount of city gas.
When the heating capacity is reduced, control is performed to control the gas fuel supply adjusting valve 38 so as to reduce the supply amount of the city gas, and to supply the combustion air so as to increase the combustion air supply amount. The control for controlling the amount adjusting valve 40 is executed under preset conditions.

Hereinafter, the operation is performed according to the operation control method described above.
The result of verifying the performance of the hydrogen-containing gas generator will be described.

The operating conditions of the hydrogen-containing gas generator are as follows. Raw fuel gas (13A) flow rate: 4.0 L (standard condition) / m
in Off-gas flow rate: 10.1 L (standard state) / min Raw water for steam generation (pure water): 12.0 cc / min Air flow rate for selective oxidation treatment: 0.8 L (standard state) / mi
n

As shown in FIG. 6, the supply amount of the city gas (13A) for maintaining the reforming unit 3 at the set reforming temperature in accordance with the temperature of the reforming unit 3 and the combustion gas The air supply amount is set and stored in the control unit C as reforming unit temperature control information. Based on the detected temperature of the reforming unit temperature sensor T1 and the stored reforming unit temperature control information, the control unit C controls the gas supply so that the city gas supply amount and the combustion air supply amount according to the detected temperatures are obtained. A so-called feed-forward control for controlling the fuel supply amount adjustment valve 38 and the combustion air supply amount adjustment valve 40 is executed. In addition, the cooling fan 10 is turned on and off so that the temperature detected by the selective oxidation unit temperature sensor T2 becomes the set selective oxidation processing temperature.

The set reforming temperature is set to, for example, 64.
When the temperature is set to 2.9 ° C. and the set selective oxidation treatment temperature is set to 95.0 ° C., for example, and controlled as described above, the desulfurization unit 1, the shift unit 5, and the steam generation unit S It can be seen that the temperature of the evaporating section 2 is in thermal equilibrium as described below and can be maintained at an appropriate temperature. The temperature of the combustion section 4 at that time is as follows. Since the temperature of the combustion section 4 is correlated with the temperature of the reforming section 3, the reforming section 3 is set and reformed as described above. Combustion unit 4 to reach processing temperature
As control information for adjusting the heating capacity of the combustion section, a combustion section temperature sensor that detects the temperature of the combustion section 4 is provided instead of the reforming section temperature sensor T1, and based on the temperature detected by the combustion section temperature sensor, It is also possible to control so that the heating capacity of the combustion unit 4 is adjusted so that the reforming unit 3 reaches the set reforming processing temperature.

Temperature of desulfurization section 1: 261.8 ° C. Temperature of shift section 5: 238.9 ° C. Temperature of evaporation section 2 of steam generating section S: 136.9 ° C. Temperature of combustion section 4: 838. 7 ° C

Hereinafter, each of the second and third embodiments of the present invention will be described. In each embodiment, the same components and components having the same functions as those of the first embodiment will be described.
In order to avoid repetition, the description will be omitted by assigning the same reference numerals, and a configuration different from the first embodiment will be mainly described.

[Second Embodiment] Hereinafter, based on the drawings,
A second embodiment in which the present invention is applied to a hydrogen-containing gas generator for a fuel cell will be described. In the above-described first embodiment, the case where the hydrogen-containing gas generator P is configured by integrally assembling the desulfurization unit 1 has been described.
As shown in (2), in the second embodiment, the desulfurization unit 1 is not installed integrally with the hydrogen-containing gas generator P but is placed outside. Accordingly, the desulfurization section heater 32 and the raw fuel gas heat exchanger Ea provided in the first embodiment are omitted.

In the second embodiment, the reforming section 3, the shift section 5, and the selective oxidation section 6 are the same as those in which the shift section 5 is located between the reforming section 3 and the selective oxidation section 6 and is adjacent to the reforming section 3. The heating capacity of the combustion unit 4 is adjusted so that the reforming unit 3 is maintained at a temperature appropriate for the reforming process, and the selective oxidizing unit 6 is adapted for the selective oxidizing process. The cooling capacity is adjusted by adjusting the air flow rate of the cooling fan 10 so as to maintain the temperature at an appropriate level, so that the heat transfer state between the adjacent ones is adjusted so that the metamorphic unit 5 has an appropriate temperature for the metamorphic treatment. Is set in advance.

In addition, as shown in FIG. 7, the hydrogen-containing gas generating apparatus P is provided with a plurality of rectangular plate-shaped flat containers B arranged in the thickness direction of the plate shape. The reforming section 3, the combustion section 4, the shift section 5, the selective oxidizing section 6, the steam generating section S, the respective flow sections, and the like are respectively constituted by using them. As in the first embodiment, a part of the plurality of containers B is constituted by a single-chamber-equipped container Bm, and the rest is constituted by a twin-chamber-equipped container Bd. In the second embodiment, the seven double-chambered containers Bd and the single single-chambered container Bm are arranged in the horizontal direction with the single-chambered container Bm positioned third from the left end in a side view. Are arranged side by side in the thickness direction and are formed compactly. In order to clarify the distinction between the seven twin-chamber-equipped containers Bd, for the sake of convenience, the reference numerals 1, 2, 3,...
Is attached.

As in the first embodiment, the steam generating section S is constituted by the double-chamber container Bd1 on the left end, and the combustion section 4 and the reforming section 3 are formed by using the second twin-chamber container Bd2 from the left. The single-chamber-equipped container Bm is used to constitute the heat-retaining flow part 7, and the third dual-chamber-equipped container Bd3 from the left is used to constitute the desulfurized raw fuel gas heat exchanger Ep. It is.

The downstream reforming gas flow section 15 is formed by using the left chamber of the fourth double chamber-equipped container Bd4 from the left, and the section having the right chamber is formed by using the right chamber. , A shift unit 5. The fifth twin-chamber container Bd5 from the left
The metamorphic unit 5 is constituted by using the portion provided with the left chamber of
Using the portion provided with the right side chamber, the flow passage 8 for cooling the metamorphic section
Is configured. The metamorphic unit 5 is configured by using the sixth double-chambered container Bd6 from the left, and the metamorphic unit using the left side chamber of the seventh (right end) double-compartmented container Bd7 from the left. The cooling passage 9 is formed, and the selective oxidizing section 6 is formed by using a portion provided with the right chamber. That is, the metamorphic unit 5
Is constituted by using the fourth double-chambered container Bd4 from the left, the fifth double-chambered container Bd5 from the left, and the sixth double-chambered container Bd6 from the left. It is provided.

That is, one side of the double-chamber container Bd2 constituting the combustion section 4 and the reforming section 3 is provided with the double-chamber container Bd
From the side 2, a single-chamber container B constituting the heat retaining flow passage 7
m, a heat insulating material 19, a twin chamber-equipped container Bd3 forming the desulfurization raw fuel gas heat exchanger Ep, a heat insulating material 19, a twin chamber-equipped container B forming the downstream reforming gas flow section 15 and the shift section 5
d4, a dual-chamber container Bd5 constituting the metamorphic section 5 and the cooling section flow-through section 8, and a twin-chamber vessel B constituting the metamorphic section 5
d6, the flow passage 9 for cooling the metamorphic section, and the twin chamber-equipped containers Bd7 constituting the selective oxidizing section 6 are arranged closely to each other so as to be arranged in the stated order, and the twin chamber-equipped container Bd2 is provided From the side of the container Bd2, the heat insulating material 19 and the double-chambered container Bd1 constituting the water vapor generation unit S are closely arranged and arranged in the stated order.

The raw fuel gas supply passage 21 is provided so that the desulfurized raw fuel gas desulfurized in the external desulfurizing section 1 is supplied as the hydrocarbon-based raw fuel gas to be reformed in the reforming section 3.
Is connected to the desulfurization raw fuel gas passage 13.

As shown by arrows in FIG. 10, heat is transmitted from the reforming section 5 to the selective oxidizing section 6 from the reforming section 3 heated in the combustion section 4 and is radiated from the selective oxidizing section 6. At the same time, heat is transferred from the combustion section 4 to the steam generation section S. On the other hand, the raw fuel gas supplied from the raw fuel gas supply passage 21 is mixed with the steam from the steam passage 26, and subsequently,
After being preheated by heat exchange with the reforming gas in the desulfurization raw fuel gas heat exchanger Ep, it is supplied to the reforming section 3 and heated in the combustion section 3 for reforming. Is cooled by heat exchange with the desulfurization raw fuel gas in the desulfurization raw fuel gas heat exchanger Ep, and is sequentially supplied to the three-stage shift section 5 to convert the carbon monoxide gas into carbon dioxide gas. Metamorphosis processing,
After the metamorphic processing gas is cooled by heat exchange with the raw water in the raw water preheating heat exchanger 17, it is supplied to the selective oxidizing section 6 to selectively oxidize the carbon monoxide gas to perform a selective oxidation treatment.

Therefore, in the state where the reforming section 3, the shift section 5, and the selective oxidizing section 6 are arranged as described above, adjacent ones, that is, the reforming section 3 are considered in consideration of the flow of the fluid as described above. By appropriately setting the respective heat transfer states (heat transfer amounts) between the shift unit 5 and the shift unit 5, between the shift unit 5 and the selective oxidation unit 6, and between the combustion unit 4 and the steam generation unit S. , Reforming unit 3
By adjusting the heating capacity of the combustion unit 4 so as to maintain the temperature at the reforming treatment temperature and adjusting the ventilation amount of the cooling fan 10 so as to maintain the selective oxidation unit 6 at the selective oxidation treatment temperature. The metamorphic section 5 located between the reforming section 3 and the selective oxidation section 6 can be maintained at the metamorphic treatment temperature without controlling the temperature, and the steam generating section S can be maintained. It is possible to maintain a temperature suitable for generating steam. That is, between the reforming unit 3 and the shift unit 5,
The heat transfer amount is set in the heat insulating material 19, the heat exchanger Ep for desulfurization raw fuel gas, the heat insulating material 19, and the downstream reforming gas flow part 15 arranged in order from the reforming part 3 side, and is selected as the shift part 5. Oxidation part 6
In between, the heat transfer amount is set in the metamorphic section cooling flow section 9,
A heat transfer amount is set between the combustion unit 4 and the steam generation unit S by the heat insulating material 19.

The control operation when the control unit C executes the operation control in the gas generation operation is the same as that in the first embodiment, and the description is omitted.

[Third Embodiment] Hereinafter, based on the drawings,
A third embodiment in which the present invention is applied to a hydrogen-containing gas generator for a fuel cell will be described. As shown in FIG. 8, in the third embodiment, between the reforming section 3 and the selective oxidation section 6, a plurality of desulfurization sections 1 and shift sections 5 are respectively provided.
In this embodiment, three units are provided so that the desulfurization unit 1 and the shift unit 5 are alternately arranged, and that adjacent units can conduct heat. Then, the heating capacity of the combustion unit 4 is adjusted so that the reforming unit 3 is maintained at a temperature appropriate for the reforming process, and the selective oxidation unit 6 is maintained at a temperature appropriate for the selective oxidation process. By adjusting the ventilation capacity of the cooling fan 10 to adjust the cooling capacity, each of the plurality of desulfurization units 1 has an appropriate temperature for the desulfurization process, and each of the plurality of shift units 5 has an appropriate temperature for the shift process. As described above, the heat transfer state between adjacent ones is set in advance.

In addition, as shown in FIG. 8, the hydrogen-containing gas generating device P is provided with a plurality of rectangular flat plates B arranged side by side in the thickness direction of the flat plate. Using them, a desulfurization unit 1, a reforming unit 3, a combustion unit 4, a shift unit 5, a selective oxidizing unit 6, a steam generation unit S, and respective flow units are respectively configured. As in the first embodiment, a part of the plurality of containers B is constituted by a single-chamber-equipped container Bm, and the rest is a twin-chamber-equipped container B
d. In the third embodiment, ten double-chambered containers Bd and one single-chambered container Bm are laterally arranged with the single-chambered container Bm positioned third from the left end in a side view. Are arranged side by side in the thickness direction and are formed compactly. In order to make the distinction between the 10 double-chamber-equipped containers Bd clear, for convenience, the reference numerals 1, 2, 3,...
………… 10 is added.

As in the first embodiment, the steam generating section S is constituted by the double-chamber container Bd1 at the left end, and the combustion section 4 and the reforming section 3 are formed by using the second twin-chamber container Bd2 from the left. The single-chamber-equipped container Bm is used to constitute the heat-retaining flow part 7, and the third dual-chamber-equipped container Bd3 from the left is used to constitute the desulfurized raw fuel gas heat exchanger Ep. It is.

The desulfurization unit 1 is constituted by using the fourth twin-chamber container Bd4 from the left, and the fifth double-chamber container B from the left.
The desulfurization unit 1 is constituted by using the part provided with the left chamber of d5, and the raw fuel gas flow part 16 is constituted by using the part provided with the right chamber. Sixth double-chambered container Bd from the left
The downstream reforming gas flow section 15 is constituted by using the section provided with the left chamber 6 and the shift section 5 is constituted by using the section provided with the right chamber. The desulfurization unit 1 is configured by using the seventh twin-chamber container Bd7 from the left, and the metamorphic unit 5 is configured by using the left chamber of the eighth double-chamber container Bd8 from the left. The flow passage 8 for cooling the metamorphic section is constituted by using the portion provided with the right chamber. Using the ninth double-chambered container Bd9 from the left, the metamorphic unit 5 is configured, and the metamorphic unit using the portion of the tenth (right end) double-chambered container Bd10 from the left that includes the left chamber. The cooling passage 9 is formed, and the selective oxidizing section 6 is formed by using a portion provided with the right chamber. That is, the desulfurization unit 1 is configured by using the fourth twin-chamber container Bd4 from the left, the fifth twin-chamber container Bd5 from the left, and the seventh twin-chamber container Bd7 from the left,
Three desulfurization units 1 are provided. The metamorphic section 5 is 6
It is configured by using the sixth twin-chamber container Bd6, the eighth twin-chamber container Bd8 from the left, and the ninth double-chamber container Bd9 from the left, and three transformation units 5 are provided. Then, the three desulfurization units 1 and the three shift units 5 are combined with the desulfurization unit 1 and the shift unit 5.
Are alternately arranged.

That is, one side of the double-chambered container Bd2 constituting the combustion section 4 and the reforming section 3 is provided with the double-chambered container Bd
From the side 2, a single-chamber container B constituting the heat retaining flow passage 7
m, a heat insulating material 19, a twin chamber-equipped container Bd3 forming the desulfurized raw fuel gas heat exchanger Ep, a heat insulating material 19, a twin chamber container Bd4 forming the desulfurizing section 1, the desulfurizing section 1, and the raw fuel gas flow section , The downstream-side reforming gas flow section 15 and the twin-chamber container B forming the shift section 5.
d6, a twin-chamber container Bd7 constituting the desulfurization unit 1, a twin-chamber container B constituting the shift unit 5 and the flow passage 8 for cooling the shift unit
d8, a twin-chamber-equipped container Bd9 constituting the shift part 5, a twin-chamber-equipped container Bd10 constituting the shift part cooling passage part 9 and the selective oxidizing part 6 are closely arranged and arranged in the stated order, On the other side of the equipped container Bd2, a heat insulating material 19 and a twin-compartment equipped container Bd1 constituting the steam generating section S are arranged in close contact with each other from the side of the double-compartment equipped container Bd2 in the stated order.

In the third embodiment, the partition member 43 of the double-chambered container Bd2 forming the combustion section 4 and the reforming section 3
A plurality of reinforcing members 63 are bridged between the double-chamber-equipped container Bd and the heat insulating material 19 adjacent to the combustion section 4 side. The plurality of reinforcing members 63 are configured to suppress deformation of the double-chamber-equipped container Bd due to thermal expansion.

The desulfurization section heater 32 includes a fourth double-chambered container Bd4 from the left and a fifth double-chambered container Bd5 from the left.
And one of the metamorphic section heaters 33 is 6 mm from the left.
It is provided between the sixth twin-chamber container Bd6 and the seventh twin-chamber container Bd7 from the left, and the other transformation unit heater 33 is
It is provided between the ninth twin-compartment container Bd9 from the left and the tenth double-compartment container Bd10 from the left. Furthermore, the third
In the embodiment, a steam generation heater 60 for heating the steam generation heating passage 11 and a raw fuel gas heater 61 for heating the desulfurization raw fuel gas passage 13 are provided at the time of startup.

The raw fuel gas supply path 21 is connected to the raw fuel gas flow section 16 of the raw fuel gas heat exchanger Ea, and the raw fuel gas flow section 16, the three-stage desulfurization section 1, the desulfurized raw fuel The desulfurization raw fuel gas flow section 13, the reforming section 3, the heat retaining flow section 7, and the upstream reforming processing gas flow section 12 of the desulfurization raw fuel gas heat exchanger Ep of the gas heat exchanger Ep, The gas processing passage 22 is formed so as to form a gas processing path that flows in the order of the downstream reforming gas flow section 15, the three-stage shift section 5, and the selective oxidation section 6 of the fuel gas heat exchanger Ea. Connected. By providing the three desulfurization units 1 and the three shift units 5 so that the desulfurization unit 1 and the shift unit 5 are alternately arranged, the gas is passed through the plurality of desulfurization units 1 so that the gas to be treated flows sequentially. In order to connect them in the processing flow path 22 and to connect them in the gas processing flow path 22 so that the gas to be processed flows sequentially through the plurality of metamorphic sections 5, they are connected in the order of the flow paths. Since the length of the gas processing flow path 22 can be increased, the connection operation is facilitated.

In the third embodiment, the combustion gas discharged from the cooling passage 8 through the combustion gas passage 27, the combustion air supplied to the combustion unit 4 through the combustion air passage 29, and the off-gas passage 24 An exhaust heat recovery heat exchanger 62 is provided for preheating the combustion air and the off-gas by exchanging heat with the off-gas supplied to the combustion unit 4 through the heat exchanger. Although not shown, as in the first embodiment, the combustion air bypass 30 and the air path switching on-off valve 35,
36 are provided.

From the reforming section 3 heated in the combustion section 4 to the selective oxidation section 6, the desulfurization section 1, the shift section 5, the desulfurization section 1,
The heat is sequentially transmitted to the metamorphic section 5, the heat is radiated from the selective oxidation section 6, and the heat is transmitted from the combustion section 4 to the steam generation section S. On the other hand, the raw fuel gas supplied from the raw fuel gas supply path 21 is preheated by heat exchange with the reforming gas in the raw fuel gas heat exchanger Ea, and then supplied to the three-stage desulfurization unit 1 sequentially. After desulfurization treatment, the desulfurization raw fuel gas is mixed with steam from the steam passage 26, and then preheated by heat exchange with the reforming treatment gas in the desulfurization raw fuel gas heat exchanger Ep.
It is supplied to the reforming section 3 and is heated and reformed in the combustion section 3.
The reformed gas is cooled by heat exchange with the desulfurized raw fuel gas in the desulfurized raw fuel gas heat exchanger Ep, and further cooled by heat exchange with the raw fuel gas in the raw fuel gas heat exchanger Ea. After the heat exchange, the gas is sequentially supplied to the three-stage shift section 5 to convert the carbon monoxide gas into carbon dioxide gas for shift processing, and the shift processing gas is fed to the feed water pre-heating heat exchanger 17 for feed water. After cooling by heat exchange with the gas, the gas is supplied to the selective oxidizing unit 6 to selectively oxidize the carbon monoxide gas to perform a selective oxidation treatment.

Therefore, in the state where the three desulfurization units 1, the reforming unit 3, the three shift units 5 and the selective oxidation unit 6 are arranged as described above, adjacent units are taken into consideration in consideration of the flow of the fluid as described above. The heating capacity of the combustion unit 4 is adjusted so that the reforming unit 3 is maintained at the reforming processing temperature by appropriately setting the respective heat transfer states (heat transfer amounts) between the heat exchangers and the selective oxidation. The reforming unit 3 and the selective oxidizing unit 6 are controlled by adjusting the ventilation amount of the cooling fan 10 so that the unit 6 is maintained at the selective oxidizing treatment temperature.
And three desulfurization units 1 and three metamorphic units 5 located between
Even if the temperature is not controlled, the temperature can be maintained at the desulfurization treatment temperature and the shift treatment temperature, respectively, and the steam generation unit S can be maintained at a temperature appropriate for the steam generation. .

The control operation when the control unit C executes the operation control in the gas generation operation is the same as that in the first embodiment, and the description is omitted.

[Another Embodiment] Next, another embodiment will be described. (A) The shapes and arrangements of the respective components constituting the hydrogen-containing gas generator P, such as the desulfurization unit 1, the reforming unit 3, the combustion unit 4, the shift unit 5, the selective oxidation unit 6, and the steam generation unit S, are as described above. The invention is not limited to those exemplified in the embodiment. For example, as shown in FIG. 11, a plurality of cylinders 51 are provided coaxially, and the desulfurization unit 1 and the reforming unit are formed by using the inside of the center cylinder 51 and between adjacent cylinders 51. 3, the combustion unit 4, the shift unit 5, the selective oxidizing unit 6, etc., each unit constituting the hydrogen-containing gas generator P may be configured.

In the example shown in FIG. 11, the combustion section 4 is formed by using the inside of the center cylinder 51, and the reforming section 3 is formed by using the space between the center cylinder 51 and the cylinder 51 adjacent thereto. The outermost cylindrical body 51 and the adjacent cylindrical body 51
And the selective oxidizing unit 6 is formed by using the
Between the steam generator S and the desulfurizer 1,
The metamorphic parts 5 are arranged in order from the inside,
It is configured using a space between adjacent cylindrical bodies 51.
As a cooling means for cooling the selective oxidizing section 6, a cooling water jacket 52 for cooling the selective oxidizing section 6 with flowing cooling water is provided, and a cooling water supply path 53 for supplying cooling water to the cooling water jacket 52 is provided. A cooling water pump 54 for adjusting the flow rate of the cooling water is provided.

Then, the control unit C controls the reforming unit temperature sensor T
1 based on the detected temperature and the stored reforming unit temperature control information so that the city gas supply amount and the combustion air supply amount according to the detected temperature become the gas fuel supply amount adjustment valve 38 and the combustion air Each of the supply amount adjustment valves 40 is controlled. or,
The operation of the cooling water pump 54 is controlled such that the temperature detected by the selective oxidation section temperature sensor T2 becomes the selective oxidation processing temperature.

(B) The desulfurization unit 1, the reforming unit 3, the shift unit 5, and the selective oxidizing unit 6 are located between the reforming unit 3 and the selective oxidizing unit 6. In order to provide heat conduction between adjacent components, the arrangement order of the desulfurization unit 1 and the shift unit 5 is not limited to the arrangement order in the above embodiment or another embodiment shown in FIG.
The arrangement order may be such that the alteration section 5 and the desulfurization section 1 are arranged in the stated order from the reforming section 3 side.

(C) In the above embodiment, the heat exchanger E for desulfurized raw fuel gas is provided between the reforming section 3 and the desulfurizing section 1.
p, a raw fuel gas heat exchanger Ea is provided between the desulfurization unit 1 and the shift unit 5, and the shift unit 5 and the selective oxidation unit 6
The case where the flow passage 9 for cooling the metamorphic portion is provided between the first and second embodiments is illustrated. Instead, between the reforming section 3 and the desulfurization section 1,
Without providing the heat exchanger Ep for desulfurization raw fuel gas, the heat insulating material 19
Only, and the heat insulating material 19 is used for the reforming section 3 and the desulfurizing section 1.
For example, a heat insulating material 19 is provided without setting the amount of heat transfer between the desulfurizing unit 1 and the heat exchanger Ea for raw fuel gas between the desulfurizing unit 1 and the shift unit 5, and the desulfurizing unit 19 uses the heat insulating material 19. Without setting the heat transfer amount between 1 and the shift unit 5 and without providing the shift unit cooling passage 9 between the shift unit 5 and the selective oxidation unit 6, for example, a heat insulating material 19 is provided. The heat transfer amount between the shift unit 5 and the selective oxidation unit 6 may be set by the heat insulating material 19.

(D) As the control for adjusting the heating capacity of the combustion section 4, in the above embodiment, the control for controlling the gas fuel supply adjusting valve 38 so as to reduce the supply of city gas, and Although the case where the control for controlling the combustion air supply amount adjusting valve 40 is used together to increase the combustion air supply amount has been exemplified, the gas fuel supply amount adjustment valve 38 is set so as to reduce the city gas supply amount. You may comprise so that only control may be performed. Alternatively, an off-gas supply amount adjusting valve for adjusting the amount of off-gas supplied to the combustion unit 4 is provided, and the heating capacity of the combustion unit 4 is adjusted by adjusting the off-gas supply amount by controlling the off-gas supply amount adjustment valve. You may.

(E) The control mode for adjusting the heating capacity of the combustion unit 4 in order to maintain the reforming unit 3 at the reforming processing temperature is as follows:
The present invention is not limited to the feedforward control as exemplified in the above-described embodiment.
Comparing the detected temperature with the reforming temperature, the heating capacity is decreased when the detected temperature is higher than the reforming temperature, and the heating capacity is increased when the detected temperature is lower than the reforming temperature. As described above, the feedback control for controlling the gas fuel supply amount adjustment valve 38 and the combustion air supply amount adjustment valve 40 may be performed, or both the feedforward control and the feedback control may be performed.

(F) The temperature detection positions of the reforming section temperature sensor T1 and the selective oxidation section temperature sensor T2 are not limited to the positions exemplified in the above embodiment, but can be changed as appropriate.

(G) In the first embodiment,
Although the case where the metamorphic unit 5 is provided in three stages has been illustrated, the number of stages in the case where the metamorphic unit 5 is provided in a plurality of stages can be changed as appropriate, or the metamorphic unit 5 may be provided in one stage. Further, in the third embodiment, the case where three desulfurization units 1 and three shift units 5 are provided is illustrated.
The number of the shift units 5 and the number of the shift units 5 can be changed as appropriate, and the number of the desulfurization unit 1 and the shift unit 5 may be different. In alternately arranging the desulfurization unit 1 and the shift unit 5, the form is not limited to the example illustrated in the third embodiment, and the units may be alternately arranged one by one.

(H) The specific structure of the reforming section heating means is not limited to the combustion section 4 which is a combustion-type reforming section heating means as exemplified in the above embodiment. May be configured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a hydrogen-containing gas generator according to a first embodiment.

FIG. 2 is a perspective view of a container provided with a double chamber constituting the hydrogen-containing gas generator.

FIG. 3 is a perspective view of a single-chamber container that constitutes the hydrogen-containing gas generator.

FIG. 4 is a side view of the hydrogen-containing gas generator according to the first embodiment.

FIG. 5 is a front view of the hydrogen-containing gas generator according to the first embodiment.

FIG. 6 is a diagram showing the relationship between the temperature of the reforming unit, the supply amount of city gas, and the supply amount of combustion air.

FIG. 7 is a longitudinal side view of a hydrogen-containing gas generator according to a second embodiment.

FIG. 8 is a longitudinal side view of a hydrogen-containing gas generator according to a third embodiment.

FIG. 9 is a diagram illustrating heat transfer in the hydrogen-containing gas generator.

FIG. 10 is a diagram illustrating heat transfer in the hydrogen-containing gas generator.

FIG. 11 is a schematic perspective view of a hydrogen-containing gas generator of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Desulfurization part 3 Reforming part 4 Reforming part heating means 5 Transformation part 6 Selective oxidation part 10 Selective oxidation part cooling means Ep Heat exchange part S Steam generation part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Norihisa Kami 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka F-term in Osaka Gas Co., Ltd. (reference) 4G040 EA03 EA08 EB01 EB03 EB12 EB31 EB32 EB42 EB43 EB44 5H027 AA02 BA01 BA16 BA17

Claims (7)

[Claims] 1. A reforming section which is heated by a reforming section heating means and reforms a hydrocarbon-based raw fuel gas into a gas containing hydrogen gas and carbon monoxide gas with water vapor; Conversion unit that converts the reforming gas supplied from the conversion unit by converting carbon monoxide gas in the reforming gas into carbon dioxide gas, and converts the conversion processing gas supplied from the conversion unit to the conversion unit. An operation control method for a hydrogen-containing gas generator provided with a selective oxidizing unit for performing selective oxidation treatment by selectively oxidizing carbon monoxide in a processing gas, comprising: a selective oxidizing unit cooling unit that cools the selective oxidizing unit. The reforming section, the shift section, and the selective oxidation section are arranged such that the shift section is located between the reforming section and the selective oxidation section, and that adjacent ones can conduct heat. Provision of the reforming section suitable for the reforming process To maintain the temperature,
A hydrogen-containing gas generator that adjusts the heating capacity of the reforming section heating means and adjusts the cooling capacity of the selective oxidizing section cooling means so as to maintain the selective oxidizing section at a temperature appropriate for the selective oxidizing treatment. Operation control method. 2. The reforming section heating means is configured to be of a combustion type for burning gaseous fuel, and water supplied to the side of the reforming section opposite to the side on which the shift section is provided is subjected to the combustion. 2. The operation of the hydrogen-containing gas generator according to claim 1, further comprising a steam generation unit configured to generate steam for the reforming process in the reforming unit by heating with the combustion gas discharged from the reforming unit heating unit. Control method. 3. The reforming section, the shift section, and the selective oxidation section are configured such that their outer shapes are flat and plate-shaped, and the plate-shaped reforming section, the shift section, and the selective oxidation section are formed. The operation control method for a hydrogen-containing gas generator according to claim 1, wherein the portions are arranged in parallel in the thickness direction. 4. A desulfurizing raw fuel gas desulfurized in a desulfurizing section for desulfurizing a hydrocarbon raw fuel gas is supplied as a hydrocarbon raw fuel gas to be reformed in the reforming section. The method according to any one of claims 1 to 3, wherein the desulfurizing unit and the shift unit are arranged between the reforming unit and the selective oxidation unit, and are provided so as to be able to conduct heat between adjacent units. An operation control method for the hydrogen-containing gas generator. 5. A plurality of said desulfurization units and said plurality of shift units are provided such that said desulfurization unit and said shift unit are alternately arranged and that adjacent units can conduct heat. An operation control method for the hydrogen-containing gas generator according to the above. 6. A heat exchange section for exchanging heat between the desulfurization raw fuel gas from the desulfurization section and the reforming gas from the reforming section is provided between the reforming section and the desulfurization section or the shift section. The operation control method for a hydrogen-containing gas generator according to claim 4 or 5, wherein 7. The reforming unit, the desulfurizing unit, the shift unit, and the selective oxidizing unit are configured to have a flat plate-like outer shape, and the plate-shaped reforming unit and the desulfurizing unit are formed. The operation control method for a hydrogen-containing gas generator according to any one of claims 4 to 6, wherein the shift unit and the selective oxidation unit are arranged in parallel in a thickness direction.