JP2009227722A - Desulfurization apparatus, its method, apparatus for producing fuel gas for fuel cell, and fuel cell system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell system having a desulfurization apparatus capable of stably and efficiently supplying a liquid fuel by carrying out desulfurization treatment. <P>SOLUTION: A liquid fuel to be subjected to the desulfurization treatment is desulfurized by exchanging the heat with a liquid fuel after the desulfurization treatment by a liquid fuel heat exchanger 122. The liquid fuel having a temperature lowered by the heat exchange is reheated by a heating means 122B4 after releasing the pressure by a minimum pressure valve 122B3 on a runoff route 122B, and flowed into a buffer tank 123. A vapor component such as methane gas present in the liquid fuel in an equilibrium condition is sufficiently separated in the buffer tank 123. As a result, the inconvenience of causing pulsating current by the generation of the vapor phase component when feeding the liquid fuel to the following step can be prevented without setting the volume of the buffer tank 123 large. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a desulfurization apparatus that desulfurizes liquid fuel with a desulfurization agent, a method thereof, an apparatus for producing fuel gas for a fuel cell, and a fuel cell system.

Conventionally, for example, various desulfurization methods for desulfurizing liquid fuel to generate hydrogen gas used for power generation in a fuel cell are known (see, for example, Patent Document 1 or Patent Document 2).
The one described in Patent Document 1 supplies a raw material from a desulfurizer that is filled with a desulfurizing agent and performs a desulfurization process to the auxiliary tank, supplies the raw material from the auxiliary tank to the reformer, and is generated from the desulfurizer at the time of start The raw material vapor is poured into an auxiliary tank and stored to prevent it from being supplied to the reformer, thereby preventing deterioration of the reforming catalyst and shortening the stop time. And the raw material level in an auxiliary tank is detected so that an auxiliary tank may not become empty, and the required quantity of raw material is supplied through a desulfurizer from a raw material tank.
However, in the conventional desulfurization method as described in Patent Document 1, a necessary amount of raw material is supplied from the raw material tank via the desulfurizer so that the auxiliary tank does not become empty, and a certain amount of raw material is supplied to the auxiliary tank. If the supply from the raw material tank is stopped when the gas is stored, the flow of the raw material stops in the desulfurizer, the temperature of the raw material in the desulfurizer rises, and steam is generated, so that desulfurization by the liquid phase adsorption method is performed. There is a possibility that the desulfurization efficiency of the desulfurizing agent for performing the treatment may fluctuate. For this reason, it is necessary to use a desulfurizer having a sufficient volume for a stable and good desulfurization treatment, which may increase the size of the apparatus.

In the device described in Patent Document 2, liquid fuel is introduced into the bottom of a desulfurization reactor in which a desulfurizing agent is filled and desulfurized, and the temperature is raised to a predetermined temperature and brought into contact with the desulfurizing agent for desulfurization. Thereafter, the reaction product in which the liquid component and the gas component coexist is extracted from the site of the gas-liquid interface in the desulfurization reactor, transferred to the downstream vaporizer and the reforming reactor, and hydrogen gas is supplied. The structure which prevents the pulsation at the time of producing | generating and transferring downstream after desulfurization is taken.
However, in the conventional desulfurization method as described in Patent Document 2, since a desulfurization agent for performing a desulfurization treatment by a liquid phase adsorption method is used, a gas component and a liquid component are contained in the desulfurization reactor. Since the desulfurization treatment efficiency by the desulfurization agent is different due to the generation, it is necessary to use a desulfurization reactor having a sufficient volume for stable and good desulfurization treatment, which may increase the size of the apparatus. Further, for example, when the flow of the liquid fuel is stopped by interrupting the power generation process, a gaseous component is more easily generated in the desulfurization reactor. For this reason, at the time of restarting, the control of pulling out in the state where the gas component and the liquid component coexist becomes complicated, and there is a possibility that pulsation may occur during the transfer to the downstream side. Furthermore, when vaporization is caused by mixing with water vapor in the vaporizer in the latter stage, the ratio of the gas component and liquid component of the reaction product to be transferred fluctuates, so that the water vapor balance in the reforming process in the latter stage is changed. It may fluctuate and a stable reforming process may not be obtained.

  By the way, as a desulfurization method, energy efficiency is extremely important particularly in a configuration in which hydrogen gas used for power generation in a fuel cell is generated. For this reason, as described in Patent Document 3, for example, a configuration is known in which a liquid hydrocarbon is desulfurized using a metal-based desulfurizing agent without adding hydrogen at a predetermined temperature and pressure. Further, miniaturization is strongly desired in the fuel cell system.

JP 2003-151608 A JP 2004-51864 A International Publication WO2004 / 9735

  As described above, the conventional desulfurization method uses an auxiliary tank that temporarily stores liquid fuel after desulfurization as in Patent Document 1 and the like so that it can be continuously and stably supplied to subsequent processes. Yes. However, when the liquid fuel after desulfurization is supplied to the subsequent stage, the liquid fuel is heated in the desulfurization process, so that a gas phase component existing in an equilibrium state is generated in the liquid fuel after desulfurization, and the stable process at the subsequent stage. May not be obtained.

  In view of the above, an object of the present invention is to provide a desulfurization apparatus, a method thereof, a fuel gas production apparatus for a fuel cell, and a fuel cell system, which can stably supply liquid fuel with a desulfurization treatment. .

The desulfurization apparatus according to the present invention is a desulfurization apparatus for desulfurizing a liquid fuel, the liquid fuel supply means for supplying the liquid fuel, and the liquid supplied with the desulfurization agent and supplied by the liquid fuel supply means A desulfurizer comprising a heating means for heating the fuel and desulfurizing while heating the supplied liquid fuel; the desulfurized liquid fuel connected to the desulfurizer is flowed in; and the liquid fuel stored in the lower portion is flowed out A storage tank having an open liquid fuel outlet and a gas fuel outlet through which gas phase of the liquid fuel flows out, and the desulfurized liquid fuel and liquid fuel flowing out from the desulfurizer A heat exchanger that exchanges heat with the liquid fuel supplied to the desulfurizer by a supply means, and a heating that heats the desulfurized liquid fuel that is heat-exchanged by the heat exchanger and flows into the storage tank means A flow path with, and characterized by including the.
In this invention, in order to efficiently desulfurize the liquid fuel to be desulfurized with the desulfurizer, the heat is exchanged with the liquid fuel after the desulfurization treatment with the heat exchanger, and the liquid fuel whose temperature has been lowered to some extent by the heat exchange is stored. It is reheated by the heating means of the flow path that flows into the tank, and the vapor phase components existing in an equilibrium state in the liquid fuel are sufficiently separated in the storage tank, and the gas phase component is separated from the liquid fuel flowing out from the storage tank to the subsequent stage. To prevent the inconvenience of generating pulsating flow.
Accordingly, for example, the inconvenience of the pulsating flow in the subsequent stage can be surely prevented without setting the capacity of the storage tank large, and the liquid fuel after the desulfurization treatment can be supplied stably.

And in this invention, it is preferable that the said heating means heats the said liquid fuel after cancellation | release of the pressure-holding state for the desulfurization process by a desulfurizer.
In this invention, the liquid fuel after releasing the pressure holding state for the desulfurization process by the desulfurizer is heated by the heating means.
This eliminates the need to increase the capacity of the storage tank and allows the gas phase components to be separated efficiently and easily because the gas phase components that exist in an equilibrium state are heated easily by releasing the pressure holding state. In addition, it is possible to prevent the inconvenience of the pulsating flow due to the generation of a gas phase component when supplying the liquid fuel after the desulfurization treatment to the subsequent stage.

In the present invention, it is preferable that the flow path includes a pressure holding valve, and the heating means is provided on the storage tank side with respect to the pressure holding valve.
According to the present invention, the liquid fuel after desulfurization treatment is heated on the storage tank side downstream from the pressure-holding valve provided in the flow path in order to efficiently and stably contact with the desulfurization agent in the desulfurizer. Heat by means.
As a result, the liquid fuel after being efficiently and stably desulfurized is in a depressurized state and heated in a state in which the gas phase component existing in the equilibrium state is easily separated, so it is necessary to increase the capacity of the storage tank. Therefore, the gas phase can be separated efficiently and easily, and the inconvenience of the pulsating flow due to the generation of the gas phase can be prevented when supplying the liquid fuel after the desulfurization process to the subsequent stage.

Furthermore, in the present invention, it is preferable that the heating means heats the liquid fuel to 90 ° C. or higher, preferably 95 ° C. or higher, more preferably 100 ° C. or higher.
Here, when heating is performed at a temperature lower than 90 ° C., the lower the temperature, the worse the generation state of the gas phase component, which may be inefficient. On the other hand, when heating is not performed after desulfurization, the vapor phase in an equilibrium state is difficult to separate. For this reason, by heating the liquid fuel after the desulfurization treatment at 90 ° C. or higher, the gas phase component existing in an equilibrium state in the liquid fuel can be separated efficiently.

Moreover, in this invention, it is preferable that the said heating means heats the said liquid fuel heat-exchanged to the temperature lower than 90 degreeC with the said heat exchanger to 90 degreeC or more.
In this invention, the liquid fuel cooled to a temperature lower than 90 ° C. by heat exchange is heated to 90 ° C. or higher.
As a result, gas phase components existing in an equilibrium state in the liquid fuel are efficiently separated by reheating.

And in this invention, it is preferable that the said heating means is set as the structure which is a heat exchanger which heats the said liquid fuel which distribute | circulates by the heating of the heating means of the said desulfurizer.
In the present invention, as the heating means, a heat exchanger that heats the liquid fuel flowing through the heating of the heating means of the desulfurizer is used.
As a result, the amount of heat from the heating means can be effectively used as the thermal energy for reheating the liquid fuel, and the gas phase component existing in an equilibrium state can be separated more efficiently.

The desulfurization method according to the present invention is a desulfurization method in which liquid fuel is desulfurized by a desulfurizer, wherein the liquid fuel is heated by heat exchange and desulfurized by the desulfurizer, and the desulfurized liquid fuel is heated. A heat exchanger that is cooled by exchange, and a storage tank that stores the liquid fuel after the desulfurization treatment and that allows the liquid fuel to flow out from the lower part and out of the gas phase from the upper part, and is cooled by the heat exchanger. The liquid fuel is heated before flowing into the storage tank.
The present invention is a development of the desulfurization apparatus according to claim 1, and has the same effects as the desulfurization apparatus according to claim 1.

An apparatus for producing fuel gas for a fuel cell according to the present invention includes the desulfurization apparatus according to any one of claims 1 to 6 and a liquid phase connected to a storage tank of the desulfurization apparatus and stored in the storage tank. A transfer path for transferring the liquid fuel, vaporization means for vaporizing the liquid fuel connected to the transfer path into a raw material gas, reforming the raw material gas vaporized by the vaporization means, And a reforming means to be produced.
In the present invention, the desulfurized liquid fuel can be efficiently and stably supplied to the desulfurization apparatus according to any one of claims 1 to 6, via a transfer path for transferring the liquid liquid fuel to be stored. A vaporizing means for vaporizing the liquid fuel into the raw material gas is connected. Then, the raw material gas vaporized by the vaporizing means is reformed by the reforming means to generate a fuel gas.
As a result, the desulfurized liquid fuel can be efficiently and stably supplied to the vaporizing means without pulsation, so that the mixing balance with the water vapor when vaporizing the vaporized gas by the vaporizing means is stabilized, for example, and reforming in the subsequent stage. A stable reforming process in the means can be obtained, and fuel gas with stable characteristics can be supplied stably.

In the present invention, the reforming means includes a burner, is connected to a storage tank of the desulfurization apparatus, and includes a fuel supply path that supplies a gas phase component stored in the storage tank as fuel for the burner. It is preferable that
In this invention, the gas phase component stored in the storage tank of the desulfurization apparatus is supplied as fuel to the burner of the reforming means via the fuel supply path.
As a result, even when a gas phase component is generated, the fuel can be effectively used as the fuel for the burner that is heated for the reforming process by the reforming means, so that the liquid fuel can be used efficiently.

A fuel cell system according to the present invention includes a fuel cell fuel gas production device according to claim 8 or claim 9, oxygen-containing gas supply means for supplying an oxygen-containing gas, and fuel cell fuel gas. And a fuel cell that generates electric power by using the fuel gas reformed by the reforming unit of the manufacturing apparatus and the oxygen-containing gas supplied by the oxygen-containing gas supply unit.
According to the present invention, a fuel cell is obtained by utilizing a fuel gas from a fuel cell fuel gas production apparatus capable of stably supplying a fuel gas having stable characteristics and an oxygen-containing gas supplied from an oxygen-containing gas supply means. To generate electricity.
As a result, the ratio between the fuel gas and the oxygen-containing gas is stabilized, and power can be generated efficiently and satisfactorily.

Hereinafter, an embodiment according to the fuel cell system of the present invention will be described.
In the present embodiment, the configuration of a fuel cell system that uses kerosene is exemplified, but the present invention can be applied to, for example, a manufacturing apparatus that manufactures fuel gas supplied to a fuel cell.
FIG. 1 is a block diagram showing a schematic configuration of a fuel cell system according to the present embodiment. FIG. 2 is a block diagram showing a schematic configuration of the desulfurization apparatus.

[Configuration of fuel cell system]
(overall structure)
In FIG. 1, reference numeral 100 denotes a fuel cell system. The fuel cell system 100 is a system in which liquid fuel is used as a raw material to be reformed into a fuel gas mainly containing hydrogen, and the fuel cell 170 generates power.
The fuel cell system 100 includes a liquid fuel supply unit 110, a desulfurization unit 120, a vaporization unit 130, a reforming unit 140, an oxygen-containing gas supply unit 150, a humidifier 160, a fuel cell 170, and the like. I have.
The liquid fuel supply means 110 and the desulfurization means 120 constitute a desulfurization apparatus 200 for desulfurizing the liquid fuel in the present invention. The desulfurization apparatus 200, a desulfurization fuel path 124 as a transfer path, a vaporization means 130, Fuel as a fuel gas production device for fuel cells, which is a device for producing hydrogen gas-rich fuel gas as a raw material to be generated by the fuel cell 170 from the desulfurized liquid fuel 111A according to the present invention by the reforming means 140 A gas manufacturing apparatus 300 is configured.

As shown in FIGS. 1 and 2, the liquid fuel supply means 110 includes a liquid fuel storage tank 111 and a liquid fuel supply path 112.
The liquid fuel storage tank 111 stores liquid fuel 111A such as kerosene so that it can flow out. Here, the liquid fuel 111A is not limited to kerosene, and various liquid fuels such as light oil and naphtha can be used.
The liquid fuel supply path 112 is connected to the liquid fuel storage tank 111, and distributes the liquid fuel 111A stored in the liquid fuel storage tank 111. The liquid fuel supply path 112 has a liquid fuel pump 112A as a liquid fuel supply pump and a fuel supply valve 112B, one end connected to the liquid fuel storage tank 111 and the other end connected to the desulfurization means 120. A tube 112C is provided. The liquid fuel supply path 112 distributes the liquid fuel 111A stored in the liquid fuel storage tank 111 to the desulfurization means 120 by driving the liquid fuel pump 112A.
The liquid fuel supply unit 110 is not limited to the configuration including the liquid fuel storage tank 111. For example, the liquid fuel supply unit 110 is connected to the separately provided liquid fuel storage tank 111 and stores liquid in the liquid fuel storage tank 111. It is good also as a structure provided only with the liquid fuel supply path 112 which distribute | circulates the fuel 111A.

As shown in FIGS. 1 and 2, the desulfurization means 120 includes a desulfurizer 121, a liquid fuel heat exchanger 122 as a heat exchanger, a buffer tank 123 as a storage tank, and the like.
For example, the desulfurizer 121 supplies liquid fuel 111A supplied from the liquid fuel storage tank 111 to the liquid fuel supply path 112 via the liquid fuel heat exchanger 122 at about 300 [ml / hour] by liquid phase adsorption. A desulfurization treatment is performed to adsorb and remove sulfur compounds contained in 111A.
The desulfurizer 121 includes a desulfurization agent container 121A, a desulfurization heating unit (not shown) as a heating unit, a desulfurization temperature detection unit (not shown), and the like. The desulfurization agent container 121A is formed in a substantially cylindrical shape filled with a desulfurization agent 121B. The other end of the liquid fuel supply pipe 112C of the liquid fuel supply path 112 is connected to one end in the axial direction, and the liquid fuel 111A flows into the desulfurization agent container 121A. A fuel inlet (not shown) is provided at the other end in the axial direction, and a fuel outlet (not shown) is connected to the buffer tank 123 and flows out the liquid fuel 111A flowing in contact with the desulfurizing agent 121B. The desulfurizer 121 is in a state in which the axial direction of the desulfurizing agent container 121A is substantially along the vertical direction, the fuel inlet is opened downward in the vertical direction, and the fuel outlet is opened upward in the vertical direction. To be installed. That is, the desulfurizer 121 is installed in a state in which the liquid fuel 111A is introduced from the lower part of the desulfurizing agent container 121A and flows out from the upper part while flowing upward in the vertical direction.
The desulfurization heating means includes, for example, an electric heater such as a sheathed heater spirally disposed on the outer surface of the desulfurization agent container 121A, and heats the liquid fuel 111A flowing from the outer surface side of the desulfurization agent container 121A to about 200 ° C., for example. To promote desulfurization. A heat insulating material that covers and heat-insulates the outer surface of the desulfurization agent container 121 </ b> A together with an electric heater is provided on the outer surface of the desulfurizer 121. Further, the electric heater is not limited to the spiral arrangement, and may be arranged so as to be folded along the longitudinal direction of the desulfurization agent container 121A, for example.
The desulfurization temperature detection means includes, for example, a temperature sensor that is disposed in the desulfurization agent container 121A and detects the temperature of the desulfurization agent container 121A. This temperature sensor outputs the detected temperature detection signal to a control device described later.

The liquid fuel heat exchanger 122 heats the liquid fuel 111A supplied from the liquid fuel storage tank 111 by heat exchange with the liquid fuel 111A after desulfurization that flows out of the desulfurizer 121.
Specifically, an inflow path 122A and an outflow path 122B as a distribution path are connected to the liquid fuel heat exchanger 122. The inflow path 122A is connected to the liquid fuel supply pipe 112C of the liquid fuel supply path 112 and is connected to the fuel inlet of the desulfurizer 121, and supplies the liquid fuel 111A to the desulfurizer 121 from the liquid fuel supply pipe 112C. The outflow path 122 </ b> B is connected to the fuel outlet of the desulfurizer 121 and is connected to the buffer tank 123, and distributes the liquid fuel 111 </ b> A that has been desulfurized by the desulfurizer 121 and flows out to the buffer tank 123. An outflow valve 122B1, a strainer 122B2, a pressure holding valve 122B3, and a heating means 122B4 are provided on the outflow path 122B downstream of the liquid fuel heat exchanger 122. The heating means 122B4 has, for example, a heat exchanger structure that is spirally piped on the outer surface of the desulfurizer 121 and heats the liquid fuel 111A that is circulated by heating the desulfurizer 121 by the desulfurization heating means.
Then, the supplied liquid fuel 111A flowing from the liquid fuel supply pipe 112C and flowing through the inflow path 122A and the liquid fuel 111A after desulfurization processing flowing through the outflow path 122B are subjected to heat exchange, and the supplied liquid fuel 111A is exchanged. It is heated to some extent and supplied to the desulfurizer 121.
The desulfurized liquid fuel 111A flowing through the outflow path 122B flows through the pressure holding valve 122B3 to release the pressure, is reheated by the heating means 122B4, and flows into the buffer tank 123. Heating by the heating means 122B4 is designed to heat the liquid fuel 111A that circulates in a temperature range of 90 ° C. or higher, preferably 95 ° C. or higher, more preferably 100 ° C. or higher. Here, when heating is performed at a temperature lower than 90 ° C., the lower the temperature, the worse the state of gas phase generation, which may be inefficient. On the other hand, when heating is not performed after desulfurization, the vapor phase in an equilibrium state is difficult to separate. For this reason, the liquid fuel after the desulfurization treatment is heated to 90 ° C. or higher, preferably 95 ° C. or higher, more preferably 100 ° C. or higher. The heating unit 122B4 is not limited to the configuration of the heat exchanger, and may be configured to reheat the liquid fuel 111A using an electric heater or the like, for example, similarly to the desulfurization heating unit.

The buffer tank 123 is a tank that temporarily stores the liquid fuel 111A that is desulfurized in the desulfurizer 121 and flows in from the outflow path 122B via the liquid fuel heat exchanger 122. That is, the buffer tank 123 is provided with an inlet (not shown) through which the desulfurized liquid fuel 111A flows in and an outlet as a gaseous fuel outlet through which the gaseous fuel 111A is discharged. An outflow port as a liquid fuel outflow port (not shown) for flowing out the liquid fuel 111A corresponding to the liquid phase stored in the tank is provided, and a tank configuration capable of storing the liquid fuel 111A is formed.
Then, the liquid fuel 111A that has flowed into the buffer tank 123 is reheated by the heating means 122B4 after being released, and the gas phase component dissolved in the equilibrium state is separated.

Further, the buffer tank 123 is provided with a liquid level sensor as a detection means (not shown) that detects the amount of liquid fuel 111A to be stored.
The liquid level sensor detects the liquid level position of the liquid fuel 111A stored in the buffer tank 123, and outputs a detection signal related to the liquid level position to a control device described later. In the present embodiment, the liquid level position “LL level” where the amount of liquid fuel 111A stored in the buffer tank 123 is extremely small and the liquid level position “L level” where the amount of liquid fuel 111A stored is relatively small. ”, The liquid level position“ H level ”where the liquid fuel 111A to be stored becomes a relatively large amount, and the liquid level position“ HH level ”where the amount of stored liquid fuel 111A becomes a very large amount. The structure which detects this is illustrated.
That is, for example, when the liquid level position is between “L level” and “H level”, the liquid level sensor does not output a signal or a detection signal to that effect. When the liquid level position is between “L level” and “LL level”, a detection signal corresponding to the liquid level position “L level” is output. Further, when the position is between “H level” and “HH level”, a detection signal corresponding to the liquid level position “H level” is output. In addition, the liquid level position is lower than the “LL level”, that is, the liquid level position where the storage amount is small, and the liquid level position is higher than the “HH level”, that is, the liquid level position where the storage amount is high. A detection signal to the effect is output.
Note that the liquid level sensor is not limited to such a configuration, but is configured to continuously detect the liquid level position, and is not limited to the liquid level. Any configuration that can detect the amount of the liquid liquid fuel 111 </ b> A stored in the buffer tank 123, such as a calculated configuration, can be applied. In addition, the “LL level” and the “HH level” may be different signals as detection signals indicating an abnormality, and the control device may perform different controls.

A desulfurization fuel passage 124 having a desulfurization fuel valve 124A and a desulfurization fuel pump 124B is connected to the lower part of the buffer tank 123, and the stored desulfurized liquid fuel 111A can be supplied to the vaporizing means 130. Yes.
The upper part of the buffer tank 123 has a backfire prevention filter 125A, and discharges the vaporized liquid fuel 111A, for example, a combustion gas supply path as a fuel supply path that is supplied as a combustion gas burned by the reforming means 140 125 is connected.

As shown in FIG. 1, the vaporization unit 130 is connected to the desulfurization fuel path 124 of the desulfurization unit 120 and vaporizes the liquid fuel 111 </ b> A after desulfurization supplied from the desulfurization unit 120. The vaporization means 130 includes a vaporizer 131, a heat exchange device 132, a water supply path 133, and the like.
The vaporizer 131 is connected to the desulfurization fuel path 124 and supplied with the liquid fuel 111 </ b> A, and is connected to the heat exchange device 132 and supplied with water vapor from the heat exchange device 132. Then, the vaporizer 131 appropriately mixes the liquid fuel 111A and water vapor to vaporize, that is, generate vaporized liquid fuel that is a raw material gas. The vaporizer 131 is connected to the reforming unit 140, and supplies the vaporized liquid fuel, which is the liquid fuel 111 </ b> A vaporized by mixing water vapor, to the reforming unit 140.
The heat exchange device 132 is connected to the reforming means 140, cools the exhaust gas exhausted from the reforming means 140, generates steam from water by heat exchange with the exhaust gas, and supplies the generated steam to the vaporizer 131. . Specifically, a pure water tank 133B for storing pure water 133A is connected to the heat exchange device 132 via a water supply path 133 having a transfer pump 133C and a transfer valve 133D, and the pure water 133A is supplied from the pure water tank 133B. Is supplied. The pure water 133A is heat-exchanged with the exhaust gas from the reforming means 140 and supplied to the vaporizer 131 as water vapor. The pure water tank 133B may store pure water 133A that does not contain impurities such as distilled water, and may be provided with a configuration in which, for example, tap water is purified and supplied appropriately.

The reforming unit 140 reforms the vaporized liquid fuel vaporized by mixing the water vapor by the vaporizing unit 130 into a hydrogen-rich fuel gas. The reforming means 140 includes a reformer 141, a CO converter 142, a CO selective oxidizer 143, and the like.
The reformer 141 includes a reforming catalyst such as a nickel catalyst (not shown) and a burner 141A. The burner 141 </ b> A is connected to a fuel transfer path 144 that is connected to the liquid fuel storage tank 111 and has a transfer pump 144 </ b> A to transfer the liquid fuel 111 </ b> A stored in the liquid fuel storage tank 111. In addition, an air supply path 145 having an air supply blower 145A and an air supply valve 145B is connected to the burner 141A, and combustion air is supplied by driving the air supply blower 145A. Further, the burner 141A is connected to a fuel cell 170, which will be described later in detail. The burner 141A has an open / close valve 146A and is connected to a fuel gas supply path 146 for discharging the fuel gas discharged from the fuel cell 170. The burner 141 </ b> A is connected with a combustion gas supply path 125, and is supplied with gas-phase liquid fuel 111 </ b> A stored in the buffer tank 123.
The burner 141 </ b> A is a gas-phase liquid fuel supplied via the fuel supply path 144 or the gas-phase liquid fuel supplied via the fuel conveyance path 144 by the air supplied from the air supply blower 145 </ b> A. The fuel gas supplied via 111A and the fuel gas supply path 146 is combusted, and the vaporized liquid fuel supplied to the reformer 141 is steam reformed into a hydrogen-rich fuel gas. The high-temperature exhaust gas generated by the combustion of the burner 141A is supplied to the heat exchange device 132 of the vaporizing means 130, cooled by heat exchange with the pure water 133A, and exhausted into the outside air.
The CO converter 142 converts carbon monoxide (CO) contained in the hydrogen-rich fuel gas flowing out from the reformer 141.
The CO selective oxidizer 143 is connected to the oxidation blower 143A and supplied with air. The CO selective oxidizer 143 oxidizes the remaining CO that is not transformed by the CO transformer 142 to carbon dioxide (CO ₂ ) by oxygen in the supplied air, and removes CO in the fuel gas.
Note that the CO converter 142 and the CO selective oxidizer 143 may be integrated with the reformer 141. In addition to the CO converter 142 and the CO selective oxidizer 143, a device for adsorbing and removing CO may be provided.

The oxygen-containing gas supply means 150 supplies, for example, air to the fuel cell 170 as the oxygen-containing gas.
Specifically, the oxygen-containing gas supply means 150 includes a blower 151, an air supply pipe 152 having one end connected to the blower 151 and the other end connected to the humidifier 160, and air provided in the air supply pipe 152. And a valve 153. The blower 151 is driven to supply air to the humidifier 160 through the air supply pipe 152.

The humidifier 160 is connected to the air supply pipe 152 of the oxygen-containing gas supply means 150, and humidifies the pure air 133A supplied from the pure water tank 133B while heating the supplied air to, for example, 60 to 70 ° C. The humidifier 160 then supplies the humidified air to the fuel cell 170.
The fuel gas flow path 163 is connected to the bypass path 165 at a position upstream of the fuel gas valve 163A. The bypass path 165 has a switching valve 165A and is connected to the downstream side of the opening / closing valve 146A in the fuel gas supply path 146. The bypass path 165 supplies the fuel gas flowing through the fuel gas distribution path 163 to the burner 141A of the reformer 141 via the fuel gas supply path 146.

The fuel cell 170 reacts hydrogen and oxygen to generate DC power. The fuel cell 170 is, for example, a solid polymer fuel cell, and includes a positive electrode 171, a negative electrode 172, and a polymer electrolyte membrane (not shown) disposed between the positive electrode 171 and the negative electrode 172. The air humidified by the humidifier 160 is supplied to the positive electrode 171 side, and the hydrogen-rich fuel gas from the reforming unit 140 is supplied to the negative electrode 172 side. Then, hydrogen (fuel gas) and oxygen in the air react to generate water (pure water 133A), and DC power is generated between the positive electrode 171 and the negative electrode 172.
The negative electrode 172 side is connected to the burner 141A of the reformer 141 via the fuel gas supply path 146 as described above, and supplies the surplus hydrogen as fuel for the burner 141A. A separator 175 is connected to the positive electrode 171 side. The separator 175 is supplied with air used for the reaction from the positive electrode 171 side, and is separated into air for the gas phase and water (pure water 133A) for the liquid phase. The separated air is exhausted to the outside air. And the pure water tank 133B is connected to the separator 175, and the separated water (pure water 133A) is supplied to the pure water tank 133B.
The fuel cell 170 is provided with a cooling device 177. The cooling device 177 is provided with a heat recovery device 177 A attached to the fuel cell 170. A pure water tank 133B is connected to the heat recovery device 177A via a cooling water circulation path 178 including a cooling water circulation pump 178A and a heat exchanger 178B. The cooling device 177 drives the cooling water circulation pump 178A to circulate pure water 133A serving as cooling water between the heat recovery device 177A and the pure water tank 133B through the cooling water circulation path 178, and generates heat with power generation. The fuel cell 170 is cooled and heat is recovered. The heat exchanger 178B exchanges heat with the pure water 133A circulated and heat recovered by the heat recovery device 177A, for example, tap water. The tap water warmed by this heat exchange is directly supplied to other facilities such as a bath for effective use. In addition to heat exchange with tap water, power generation from heat obtained by heat exchange may be used effectively for other facilities.

The fuel cell system 100 includes a control device (not shown) that controls the operation of the entire system.
This control device controls the flow rate of the liquid fuel 111A, controls the power supplied to the electric heater which is the heating condition of the desulfurization heating means of the desulfurizer 121, controls the combustion of the burner 141A of the reformer 141, and heats the steam in the heat exchanger 132. Control of supply amount of pure water 133A for generation, temperature management, management of power generation amount, purge processing at start / stop, etc. are performed.
In addition, the control device is connected from the liquid fuel storage tank 111 through the liquid fuel supply path 112 according to the flow rate of the liquid fuel 111A to be stored detected by the liquid level sensor of the buffer tank 123 of the desulfurization device 200, that is, the liquid level position. The driving state of the liquid fuel pump 112A is controlled so that the liquid fuel 111A is supplied at a predetermined supply amount.
Further, the control device recognizes the temperature during the desulfurization process based on the temperature detection signal output from the temperature sensor of the desulfurization device 200, and controls the power supplied to the electric heater, which is the heating condition of the desulfurization heating means. That is, the electric power to the electric heater is controlled so that the temperature sensor is substantially constant at a suitable predetermined temperature during the desulfurization process, and the heating state of the desulfurization process that is a heating load of the electric heater is controlled. In addition, when controlling the heating load, it is preferable to carry out the control for increasing or decreasing the heating load according to the driving state of the liquid fuel pump 112A described above, that is, according to the supply amount of the supplied liquid fuel 111A. Specifically, when controlling the driving state of the liquid fuel pump 112A so that the supply amount is increased, the amount of power supplied to the electric heater is also increased. Further, when controlling the driving state of the liquid fuel pump 112A so as to reduce the supply amount, the amount of power supplied to the electric heater is also reduced.

Specifically, the control device acquires a detection signal from the liquid level sensor, recognizes the liquid level position, and drives and controls the liquid fuel pump 112A in a driving state corresponding to the liquid level position.
For example, when the detection signal from the liquid level sensor is not recognized, the liquid level position is determined to be in a steady state between “L level” and “H level”, and the liquid fuel pump 112A is set to a normal state, for example, about 300. The liquid fuel 111A is continuously supplied at [ml / hour], that is, the driving state is controlled so as to continuously flow into the desulfurizer 121 instead of the on / off control.
Further, when the detection signal indicating “L level” is acquired, it is determined that the liquid amount of the liquid fuel 111A to be stored is relatively small, and the liquid fuel pump 112A is made to have a relatively large amount of liquid fuel 111A. Is not continuously supplied, that is, controlled to be driven so as to continuously flow into the desulfurizer 121 instead of on-off control. Further, when the detection signal indicating “H level” is acquired, it is determined that the liquid amount of the liquid fuel 111A to be stored is relatively large, and the liquid fuel pump 112A is relatively small and the liquid fuel 111A is continuously supplied. To the driving state to be supplied automatically.
Note that when the control device acquires a detection signal indicating an abnormality, the liquid fuel 111A supplied to the reforming means 140 in the liquid phase is hardly stored, and the fuel gas supplied to the fuel cell 170 is not stored. An abnormal situation where the fuel cell system 100 cannot be generated and a stable operating state cannot be obtained, or the liquid fuel 111A after the desulfurization process flowing into the buffer tank 123 from the outflow path 122B overflows and flows into the combustion gas supply path 125 As an abnormal situation such as, the operation of the liquid fuel pump 112A is stopped.

[Effects of fuel cell system]
As described above, in the fuel cell system 100 of the above embodiment, the liquid fuel 111A after the desulfurization treatment is performed by the liquid fuel heat exchanger 122 in order to efficiently desulfurize the liquid fuel 111A to be desulfurized by the desulfurizer 121. The liquid fuel 111A, which has been subjected to heat exchange with the heat exchange, is reheated by the heating means 122B4 of the outflow path 122B that flows into the buffer tank 123, and methane gas that exists in an equilibrium state in the liquid fuel 111A. The gas phase component is sufficiently separated by the buffer tank 123, and the inconvenience of generating a pulsating flow by generating a gas phase component from the liquid fuel 111A that flows from the buffer tank 123 through the desulfurization fuel path 124 to the subsequent stage can be prevented.
For this reason, for example, even if the capacity of the buffer tank 123 is not set large, the inconvenience of the pulsating flow at the time of supply to the subsequent stage can be surely prevented, and the liquid fuel 111A after the desulfurization treatment can be stably supplied.

And it heats by the heating means 122B4 in a state where the gas phase component that is released by releasing the pressure holding state for the desulfurization treatment by the desulfurizer 121 and is in an equilibrium state is easily separated. That is, heating means 122B4 for reheating the liquid fuel 111A is provided on the buffer tank 123 side, which is downstream from the pressure holding valve 122B3.
Therefore, it is not necessary to increase the capacity of the buffer tank 123, the gas phase can be separated efficiently and easily, and the inconvenience of the pulsating flow due to the generation of the gas phase when the liquid fuel 111A is supplied after the desulfurization process to the subsequent stage. Can be prevented.
In particular, since the heating means 122B4 is provided in the immediate vicinity of the buffer tank 123, even if it is reheated and a gas phase component is generated, it can be immediately divided by the buffer tank 123, and a stable flow of the liquid fuel 111A can be obtained. .
Further, in order to efficiently and satisfactorily perform desulfurization treatment, a pressure holding valve 122B3 that is sufficiently heat-exchanged in the liquid fuel heat exchanger 122 and maintained at a predetermined pressure is provided. As a result, the liquid fuel 111A is cooled to about 40 ° C. to 60 ° C. on the upstream side of the pressure holding valve 122B3. For example, the life of the sealing material of the pressure holding valve 122B3 is ensured and stable for a long time. While the function can be expressed, the gas phase component is dissolved in an equilibrium state. Therefore, the inconvenience of the pulsating flow in the subsequent stage can be prevented by reheating with the heating means 122B4.

The heating by the heating means 122B4 is performed at 90 ° C. or higher, preferably 95 ° C. or higher, more preferably 100 ° C. or higher, so that the gas phase component existing in an equilibrium state in the liquid fuel 111A can be efficiently removed. Can be separated.
Further, the heating means 122B4 has a heat exchanger structure that heats the liquid fuel 111A that is circulated by heating of the desulfurization heating means of the desulfurizer 121.
For this reason, the amount of heat from the desulfurization heating means can be effectively used as the heat energy for reheating the liquid fuel 111A, and the gas phase component existing in an equilibrium state can be separated more efficiently. Further, when the desulfurizer 121 is appropriately heated, the liquid fuel 111A is not reheated to a temperature higher than that of the desulfurizer 121, and the liquid fuel 111A is not overheated.

Moreover, in the said embodiment, the liquid level sensor which detects the liquid quantity of 111 A of liquid fuel stored in the buffer tank 123 is provided, and the liquid fuel 111A of the stored liquid fuel corresponding to the storage quantity detected with a liquid level sensor by a control apparatus is provided. The driving state of the liquid fuel pump 112A of the liquid fuel supply means 110 is controlled so that the liquid fuel 111A is continuously supplied to the desulfurizer 121 by the liquid fuel supply means 110 at a supply amount corresponding to the liquid level position. .
For this reason, the liquid fuel 111A is continuously supplied to the desulfurizer 121, and generation of the liquid fuel 111A for the gas phase due to the liquid fuel 111A staying in the desulfurizer 121 can be suppressed. The contact state with the liquid fuel 111A is stabilized, and a stable desulfurization process is obtained. Furthermore, since only the liquid phase component is supplied from the buffer tank 123, pulsation during mixing and transfer of the gas phase component and the liquid phase component can be prevented, and the liquid fuel 111A after the desulfurization treatment can be stably supplied to the subsequent process. . Therefore, the state of mixing with the water vapor in the vaporizer 131 at the subsequent stage can be made almost constant, hydrogen-rich fuel gas having stable properties can be stably generated, and a stable power generation state in the fuel cell 170 can be obtained.

Further, the controller controls the electric power of the desulfurization heating means corresponding to the supply amount of the liquid fuel 111A supplied by the liquid fuel pump 112A according to the liquid amount of the liquid fuel 111A stored in the buffer tank 123 detected by the liquid level sensor. Reduce the heating load by the heater. That is, the power supplied to the electric heater is increased or decreased.
For this reason, the heating load of the liquid fuel 111A during the desulfurization process varies according to the supply amount of the liquid fuel 111A supplied by the liquid fuel pump 112A according to the amount of liquid in the buffer tank 123, and thus the supply amount varies. However, the amount of heat supplied to the liquid fuel 111A can be made constant, and a stable desulfurization process can be obtained.

Further, the heating state of the electric heater of the desulfurization heating unit is controlled by the control device so that the temperature of the desulfurizer 121 detected by the temperature sensor of the desulfurization temperature detection unit becomes substantially constant.
For this reason, even when the supply amount of the liquid fuel 111A supplied by the liquid fuel pump 112A varies according to the liquid amount of the buffer tank 123, the heating state by the electric heater is stabilized with the temperature of the desulfurizer 121 being substantially constant. Since the desulfurization treatment is controlled, a stable desulfurization treatment can be easily obtained with a simple configuration.

Furthermore, the driving of the liquid fuel pump 112A is controlled according to the liquid level position of the liquid fuel 111A stored in the buffer tank 123 detected by the liquid level sensor.
For this reason, for example, a simple sensor for detecting the liquid level is used with a simple control method in which control data in association with the liquid level position detected by the liquid level sensor and the flow rate of the liquid fuel pump 112A is provided. With this configuration, it is possible to provide a configuration in which a stable desulfurization treatment can be obtained and liquid fuel after desulfurization treatment can be stably supplied without pulsation, and stable generation of fuel gas for the fuel cell 170 and stable power generation in the fuel cell 170 can be achieved. Can be provided.

The control device performs overall control, that is, operation control of the entire fuel cell system 100.
For this reason, temperature, flow rate, valve opening / closing timing, pump drive stop timing, etc. can be controlled relatively easily.For example, it is easy to construct inert gas purge and circulation control by software program control, etc. Automatic control can be easily performed as a home system in which stop and start are performed relatively frequently.
Note that the control device is not limited to one individual form, such as configured by a plurality of circuit boards, and various forms such as one in which a plurality of control circuits are constructed as a network can be applied.

[Modification of Embodiment]
The aspect described above shows one aspect of the present invention, and the present invention is not limited to the above-described embodiment, and within the scope of achieving the objects and effects of the present invention. Needless to say, the modifications and improvements are included in the contents of the present invention. In addition, the specific structure and shape in carrying out the present invention may be used as other structures and shapes within the scope of achieving the object and effect of the present invention.

That is, the fuel cell system of the present invention is not limited to a configuration in which the operation is controlled by the control device, but may be configured to be controlled for each configuration of the desulfurization means 120, the vaporization means 130, the reforming means 140, and the like.
In addition, as a control configuration, any configuration can be configured, such as a configuration in which valve opening / closing and pump or blower drive control are performed by software signal control as a general control, or a configuration in which control is performed by hardware of each configuration. Applicable.

Further, vaporization of the liquid fuel 111A is not limited to steam mixing, for example, by directly vaporizing by heat exchange with the exhaust gas from the reforming means 140 and separately mixing steam, using an ejector, etc. A vaporizer can be used.
Furthermore, the reformer 141, the CO converter 142, and the CO selective oxidizer 143 have been described as the reforming means 140. However, any configuration that generates hydrogen-rich gas from liquid fuel can be applied.
Further, the fuel cell 170 is not limited to the solid polymer type, and other various configurations can be applied.
The configuration of the fuel cell system 100 has been illustrated, but a desulfurization process is performed on the liquid fuel 111A, such as a production apparatus for producing fuel gas to be supplied to the fuel cell 170, a production apparatus, a purification apparatus, and a supply apparatus for the liquid fuel 111A. It can be applied to various configurations supplied.

In addition, although the configuration in which the combustion gas supply path 125 is connected to the buffer tank 123 and the vaporized liquid fuel 111A is supplied to the burner 141A is illustrated, this is not restrictive. For example, it can be used / supplied in various ways, such as being supplied to another combustion system, returned to the liquid fuel storage tank 111, or liquefied by the liquefaction device and returned to the buffer tank 123.
Further, the configuration for detecting the amount of the liquid fuel 111A in the liquid phase stored in the buffer tank 123 is not limited to the liquid level sensor, and various configurations described above can be applied. Furthermore, although the structure which performs various control by liquid amount detection was applied, it is not this limitation.
The control program of the control device may be distributed independently, for example, recorded on a recording medium or distributed via a network.
Furthermore, when the operation of the fuel cell system 100 is stopped, for example, the liquid tank position of the buffer tank 123 may be completely stopped after reaching a predetermined position. According to such a configuration, stable liquid fuel 111A can be supplied from the time of restart, and a favorable operation can be obtained.

Further, the heating means of the desulfurizer 121 is not limited to the configuration in which the heater is heated from the outside of the desulfurizing agent container 121A, and may be disposed in the desulfurizing agent container 121A, for example. Moreover, not only electric heaters, such as a sheathed heater, but various heating methods such as heating by various heaters and burners can be used.
Further, the heating means of the desulfurizer 121 is not limited to the configuration directly disposed in the desulfurization agent container 121A. For example, in the inflow path 122A and the outflow path 122B between the liquid fuel heat exchanger 122 and the desulfurization agent container 121A, an electric heater, a heater that uses exhaust heat from the burner 141A of the reforming unit 140, and the like are disposed in the desulfurization agent container 121A. For example, the arrangement position and configuration can be appropriately set.
That is, the desulfurization temperature detection means is not limited to the temperature sensor disposed in the desulfurizer 121, but is disposed, for example, in the desulfurizer 121, disposed in the outflow path 122B connected to the desulfurizer 121, or an infrared sensor. Any arrangement position and detection configuration capable of detecting the temperature of the liquid fuel 111 </ b> A flowing out from the desulfurizer 121 or from the desulfurizer 121, such as detecting the temperature by, for example, can be applied.

  Further, although the heating means 122B4 is provided between the pressure holding valve 122B3 and the buffer tank 123, the configuration of the heating means 122B4 is not limited to this, and may be configured to heat in the buffer tank 123, for example. Is.

  In addition, the specific structure and shape in the implementation of the present invention may be other structures as long as the object of the present invention can be achieved.

As the heating means 122B4 immediately before the buffer tank 123 in the fuel cell system, a configuration in which a stainless steel pipe having an inner diameter of 1/8 inch (3.2 mm) is immersed in a silicone oil bath and the silicone oil is heated by an electric heater is applied. The experimental apparatus used was used.
As an experiment, when silicone oil was heated to 100 ° C. (Example 1), when heated to 200 ° C. (Example 2), and when it was kept at room temperature without being heated (Comparative Example) Kerosene was circulated at a rate of 5 ml / min to flow into the buffer tank 123, kerosene was withdrawn from the desulfurized fuel passage 124, and the amount of bubbles generated per unit time was measured by a substitution method. The result is shown in FIG.

From the results shown in FIG. 3, it can be seen that by heating at 90 ° C. or higher, the amount of generated bubbles can be reduced to about 1/3 compared to the amount of generated bubbles at 15 ° C. when not heated. It can also be seen that when the temperature is increased to 200 ° C., which is substantially the same as that during desulfurization, the amount of bubbles generated gradually decreases.
Thus, it was recognized that the generation of the gas phase component can be greatly suppressed by heating at 90 ° C. or higher. Moreover, since there is a possibility that the kerosene will be deteriorated when heated to 250 ° C. or higher, the temperature to be heated is preferably 250 ° C. or lower and particularly lower than the temperature at which kerosene evaporates (under atmospheric pressure conditions).

  INDUSTRIAL APPLICABILITY The present invention can be used for a fuel cell system that generates power using a liquid fuel such as kerosene as a raw material, as well as an apparatus for producing a fuel gas that is a raw material for a fuel cell, and a desulfurization apparatus that desulfurizes liquid fuel.

1 is a block diagram showing a schematic configuration of a fuel cell system according to an embodiment of the present invention. It is a block diagram which shows schematic structure of the desulfurization apparatus in the said one Embodiment. It is a graph which shows the experimental result which confirms the bubble generation | occurrence | production state of the kerosene by heating.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ......... Fuel cell system 110 ......... Liquid fuel supply means 111A ... Liquid fuel 121 ......... Desulfurizer 121B ... Desulfurization agent 122 ......... Liquid fuel heat exchanger 122B as a heat exchanger 122B ... Distribution channel Outflow path 122B3 ... Holding pressure valve 122B4 ... Heating means 123 ......... Buffer tank as storage tank 124 ... Desulfurization fuel path as transfer path 125 ... Combustion gas supply path as fuel supply path 130 ... Vaporization means DESCRIPTION OF SYMBOLS 140 ... Reforming means 141A ... Burner 150 ... Oxygen containing gas supply means 170 ... Fuel cell 200 ... Desulfurization apparatus 300 ... Fuel gas production apparatus as a fuel gas production apparatus for fuel cells

Claims (10)

A desulfurization device for desulfurizing liquid fuel,
Liquid fuel supply means for supplying the liquid fuel;
A desulfurizer that includes a heating unit that heats the liquid fuel that is filled with a desulfurizing agent and is supplied by the liquid fuel supply unit, and that performs a desulfurization process while heating the supplied liquid fuel;
The desulfurized liquid fuel connected to the desulfurizer is flowed in, a liquid fuel outlet for flowing out the liquid fuel stored in the lower part is opened, and a gas fuel outlet for flowing out the gas phase component of the liquid fuel in the upper part A storage tank that is open,
A heat exchanger for exchanging heat between the desulfurized liquid fuel flowing out from the desulfurizer and the liquid fuel supplied to the desulfurizer by the liquid fuel supply means;
A flow path provided with a heating means for heating the desulfurized liquid fuel which is heat-exchanged by this heat exchanger and flows into the storage tank;
A desulfurization apparatus characterized by comprising: The desulfurization apparatus according to claim 1,
The desulfurization apparatus characterized in that the heating means heats the liquid fuel after the release of the pressure holding state for desulfurization processing by a desulfurizer. The desulfurization apparatus according to claim 1,
The flow path includes a pressure holding valve,
The desulfurization apparatus, wherein the heating means is provided on a side closer to the storage tank than the pressure holding valve. A desulfurization apparatus according to any one of claims 1 to 3,
The desulfurization apparatus, wherein the heating means heats the liquid fuel to 90 ° C. or higher. The desulfurization apparatus according to claim 4,
The desulfurization apparatus, wherein the heating means heats the liquid fuel heat-exchanged to a temperature lower than 90 ° C by the heat exchanger to 90 ° C or higher. A desulfurization apparatus according to any one of claims 1 to 5,
The desulfurization apparatus, wherein the heating means is a heat exchanger that heats the flowing liquid fuel by heating the heating means of the desulfurizer. A desulfurization method for desulfurizing liquid fuel with a desulfurizer,
The liquid fuel is heated by heat exchange and desulfurized in the desulfurizer, and the desulfurized liquid fuel is cooled by heat exchange; the liquid fuel after the desulfurization treatment is stored, and Using a storage tank that allows liquid gas to flow out and the gas phase from the top,
The desulfurization method, wherein the liquid fuel cooled by the heat exchanger is heated before flowing into the storage tank. A desulfurization apparatus according to any one of claims 1 to 6,
A transfer path connected to the storage tank of the desulfurization apparatus to transfer the liquid fuel in the liquid phase stored in the storage tank;
Vaporizing means for vaporizing the liquid fuel connected to the transfer path and transferred to a raw material gas;
Reforming means for reforming the raw material gas vaporized by the vaporizing means to generate fuel gas; and
An apparatus for producing fuel gas for a fuel cell, comprising: An apparatus for producing fuel gas for a fuel cell according to claim 8,
The reforming means includes a burner,
An apparatus for producing fuel gas for a fuel cell, comprising a fuel supply path connected to a storage tank of the desulfurization apparatus and supplying a gas phase component stored in the storage tank as fuel for the burner. An apparatus for producing fuel gas for a fuel cell according to claim 8 or 9,
An oxygen-containing gas supply means for supplying an oxygen-containing gas;
A fuel cell that generates electric power using the fuel gas reformed by the reforming means of the fuel cell fuel gas production apparatus and the oxygen-containing gas supplied by the oxygen-containing gas supply means;
A fuel cell system comprising:

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