JP4882215B2 - Fuel cell power generator equipped with a system for supplying reformed recycle gas for desulfurization - Google Patents

Description

  The present invention relates to a fuel cell power generator, and more particularly to a fuel cell power generator equipped with a system for supplying reformed recycle gas for desulfurization.

  A fuel cell power generation device that can extract electrical energy directly from the chemical bond energy of a substance by electrochemically reacting hydrogen and oxygen via an electrolyte. Power generation in a wide range of electrical output from 1 kW to 1000 kW The system is expected to be used as a clean energy supply method because it has high power generation efficiency and emits less air pollutants such as nitrogen oxides NOx and sulfur oxides SOx.

  A relatively small fuel cell power generator can be used as an energy supply means as a home cogeneration system because a practical power generation system can be constructed in terms of cost. In other words, energy is generated and used in each household, which is the point of use of electrical energy for daily life, and energy generated and used together with the generated electrical energy, so that energy resources can be used more efficiently It can be a system. If such an energy supply / use system becomes widespread, it can contribute to meeting social demands for energy saving.

  The fuel gas supplied to the fuel cell must be a hydrogen-rich gas with a high hydrogen gas concentration, and there are various methods for producing and supplying the hydrogen gas that serves as fuel in the fuel cell power generator, depending on the system. In power generation systems with 1 to several kW class electrical output suitable for electricity demand and heat demand, city gas mainly composed of methane and LP gas (liquefied petroleum gas) etc. that are widely supplied to ordinary households are used as they are. Since it can be used as a feedstock for hydrogen gas, it is not necessary to develop an infrastructure infrastructure, and it can be used at low cost socially.

  The conversion from city gas or LP gas (liquefied petroleum gas) to hydrogen-rich gas is accomplished by combining water vapor and hydrocarbon compounds such as methane, which is the main component of city gas, and propane, which is the main component of LP gas, in the presence of a reaction catalyst. The reaction can be carried out by a so-called steam reforming reaction. For example, a hydrogen gas generation reaction system when methane gas is steam-reformed is typically described by a chemical reaction formula shown below.

_{CH 4 + H 2 O → CO} + 3H 2

  In the steam reforming reaction, which is a reaction that depends on the catalyst, fuel gas containing hydrocarbon compounds as the main component circulates through the reformer and is supported on the catalyst support carrier that constitutes the reformer at the optimum reaction temperature. The reaction proceeds by contacting the reformed catalyst, but generally a small amount of sulfur compound of about several ppm is added as an odorant to the gas supplied to the home as a gas fuel for daily life, Sulfur compounds that come into contact with the reforming catalyst during the reaction cause a reduction in the function of the reforming catalyst due to the adhesion. In order to prevent poisoning of the reforming catalyst due to such sulfur content, a desulfurizer must be installed upstream of the reformer to remove sulfur compounds from the raw fuel gas in advance.

  Examples of the desulfurization method include a method in which a sulfur compound is adsorbed on an adsorbent and a method in which hydrogen sulfide is once converted to hydrogen sulfide and then hydrogen sulfide is removed. Among these, hydrodesulfurization performed by adding hydrogen is in principle explained by the chemical reaction formula shown below. In the following formula, R represents a hydrocarbon group.

_{R-CH 2 SH + H 2} → R-CH 3 + H 2 S (1)
H ₂ S + ZnO → ZnS + H ₂ O (2)

That is, the sulfur compound (R—CH ₂ SH) in the raw fuel gas reacts with hydrogen by the catalytic action of the desulfurization catalyst supported on the catalyst holding carrier constituting the desulfurizer, and thus hydrogen sulfide (H ₂ S). The generated hydrogen sulfide reacts with the adsorbent, zinc oxide (ZnO), which is supported on the adsorbent holding carrier constituting the desulfurizer, and is retained on the carrier constituting the desulfurizer as zinc sulfide (ZnS), and the fuel Removed from the gas. Here, as is clear from the previous equation (1), since hydrogen is required for this reaction, it is necessary to add hydrogen to city gas, LP gas, or the like as raw fuel gas. In order to supply the hydrogen necessary for hydrodesulfurization, the fuel cell power generator employs a system that recirculates a part of the fuel gas reformed to hydrogen-rich gas by the reformer to the desulfurizer as reformed recycle gas. It is common.

  As an example of adopting a system for recirculating reformed recycle gas to a desulfurizer, for example, in Patent Document 1 below, a method for supplying reformed recycle gas for desulfurization is provided with a gas flow rate control means. It is disclosed that when operating a fuel cell power generation system using city gas containing a small amount of oxygen as raw fuel, the oxygen contained in the raw fuel is rendered harmless and can be stably reformed. ing.

  Patent Document 2 below includes a desulfurizer filled with a hydrodesulfurization catalyst, and a line for returning a part of the reformed gas obtained by reforming the hydrocarbon fuel to the inlet of the desulfurizer. In the fuel gas reformer, there is disclosed a fuel gas reformer characterized in that a moisture removing means for removing moisture in the reformed gas is provided in a part of the return line of the reformed gas. .

Further, in Patent Document 3 below, a reforming reactor for reforming raw fuel to convert it into a hydrogen-rich gas, and a reformer-reacted fuel gas provided downstream of the reforming reactor. A fuel reforming system comprising at least a CO selective oxidation reactor that selectively oxidizes carbon oxide (CO) to carbon dioxide (CO ₂ ), and reforming raw fuel to produce a hydrogen-rich gas having a low CO concentration. Steam condensing / separating means for condensing and separating water vapor from at least a part of the reformed and reacted fuel gas between the downstream side of the reforming reactor and the upstream side of the CO selective oxidation reactor; There is disclosed a fuel reforming system comprising a recycle line for mixing, as a recycle gas, a gas obtained by condensing and removing water vapor by a condensing / separating means with a raw fuel supplied to the reforming reactor. .
JP-A-9-27337 JP 2002-97001 A JP 2002-356308 A

  Usually, the amount of hydrogen to be supplied to the raw fuel gas for hydrodesulfurization is about 5 to 15% in terms of hydrogen gas concentration. At that time, the hydrogen concentration is precisely controlled in accordance with the reaction equivalent of the desulfurization reaction system. Although it is not necessary, in order to avoid the influence of trace impurities accumulated in the circulating reformed recycling gas on the catalytic activity of the reforming catalyst and desulfurization catalyst, the reforming recycling gas returned to the raw fuel gas is the minimum necessary It is desirable to limit it to the limit.

  In addition, like the city gas standard 12A gas defined by the Japan Gas Association, the raw fuel gas may contain about 1% oxygen to adjust its calorific value and specific gravity, in which case hydrogen is desulfurized. Since it is consumed in the reaction with oxygen in the system, its required minimum equivalent is greatly different from that of raw fuel gas not containing oxygen.

  For these reasons, it is desired that the system for supplying the reformed recycle gas to be recirculated to the desulfurizer is a system including a simple gas flow rate adjusting mechanism having some flexibility for the flow rate management.

  However, in a small fuel cell power generation system of 1 to several kW class, the flow rate of reformed recycle gas containing hydrogen is as small as about 1 L / min. However, there is a problem that the orifice diameter is as small as about 0.4 mm, and the hole of the orifice may be blocked by moisture contained in the reformed gas.

  In this regard, the gas flow rate control means for the desulfurization reforming recycle gas disclosed in Patent Document 1 is composed of a normal gas flow meter and a gas flow rate control valve, and sufficiently solves the above problems. I couldn't. Moreover, the said patent document 2 and patent document 3 did not disclose the flow volume control means of the reforming recycle gas for desulfurization.

  On the other hand, although the problem can be solved by using a flow control device such as a mass flow controller equipped with an advanced gas flow control mechanism, it is expensive and disadvantageous in terms of cost.

  Therefore, an object of the present invention is to provide a gas flow rate control means different from that of an expensive flow rate control device such as a mass flow meter or a restricted orifice mechanism that may be clogged as a flow rate control means of the reformed recycle gas for desulfurization. An object of the present invention is to provide a fuel cell power generator provided.

  As a result of earnest research to achieve the above object, the present invention is completed by introducing a gas flow rate control means having a simple mechanism as a flow rate control means for the reformed recycle gas for desulfurization into the fuel cell power generator. It came.

That is, the fuel cell power generation device of the present invention includes a desulfurizer that reduces the concentration of sulfur compounds contained in the raw fuel gas, and a reformer that reforms the raw fuel gas treated by the desulfurizer into a hydrogen-rich reformed gas. A CO concentration reducer for reducing the concentration of carbon monoxide contained in the reformed gas treated by the reformer, and hydrogen contained in the reformed gas treated by the CO concentration reducer A fuel cell for generating an electric current, a gas conduit for allowing the raw fuel gas to flow to the desulfurizer, the reformer, the CO concentration reducer and the fuel cell, and the reformer to the fuel cell the portion of the gas conduit is connected to the gas pipe disposed upstream of the desulfurizer branches between, reflux the desulfurizer part of the reformed gas as the modifying recycle gas fuel cell comprising a reflux gas line which Ru is In collector,
The recirculation gas pipe has a plurality of parallel flow paths branched from the middle of the recirculation gas pipe, and a gas-filled container is disposed in each of the parallel flow paths. While the reformed recycle gas is allowed to flow into the disposed gas filling container, the reformed recycle gas is caused to flow out from the gas filled container disposed in the other flow path of the parallel flow path and is returned to the desulfurizer. And a valve device that controls to alternately switch between a flow path through which the reformed recycle gas flows and a flow path through which the reformed recycle gas flows out are arranged in the reflux gas pipe And

  According to the present invention, the flow rate of the reformed recycle gas can be limited by shutting off the reflux gas line by opening and closing the valve device, and a certain amount of the shut off gas can be supplied to the gas filling container. Since the portion can be retained for a predetermined time, the gas pressure difference generated during shut-off can be buffered.

In the fuel cell power generation device of the present invention, the CO concentration reducer is processed by the CO converter for converting carbon monoxide contained in the reformed gas processed by the reformer and the CO converter. A CO selective oxidizer that selectively oxidizes carbon monoxide contained in the reformed gas, and the reflux gas line is in the middle of the gas line between the CO converter and the CO selective oxidizer. It can also be set as the structure which branches from and connects to the said gas pipe line distribute | arranged upstream of the said desulfurizer .

  According to this aspect, a part of the reformed gas whose CO concentration is reduced to about 1% by the CO converter can be recirculated to the desulfurizer as the reformed recycle gas. Further, the CO concentration in the reformed gas that flows into the fuel cell and becomes the fuel can be lowered to about 10 ppm or less by the CO selective oxidizer, and at the same time, from the air necessary for the selective oxidation of carbon monoxide, Nitrogen can be prevented from being mixed into the reformed recycle gas.

In the fuel cell power generator according to the present invention, a gas compressor for increasing the pressure of the raw fuel gas is disposed in the middle of the gas pipe disposed upstream of the desulfurizer, and the recirculation gas pipe is connected to the reformer. A configuration may also be adopted in which the recycled gas is recirculated to the suction side of the gas compressor.

According to this aspect, due to the difference in gas pressure between the supplied raw fuel gas and the reformed recycle gas in the reflux gas pipe, a necessary amount of the desulfurization reformed recycle gas can be caused to flow into the suction side of the gas compressor. it can.

In the fuel cell power generation device of the present invention, in the middle of the recirculation gas pipe arranged between the CO concentration reducer and the gas filling container, it flows out of the CO concentration reducer and enters the recirculation gas pipe. A steam condensing separator that condenses and separates the steam in the reformed recycle gas that flows in may also be provided.

  According to this aspect, by removing moisture from the reformed gas flowing into the reflux gas pipeline, the reflux gas pipeline can be prevented from being blocked by condensation of water vapor contained in the steam-reformed gas. it can.

  According to the present invention, as the flow control means for the desulfurization reforming recycle gas of the fuel cell power generation device, the reforming recycle gas is allowed to stay in the gas filling container connected to the reflux gas pipe for a predetermined time, and then stays there. To provide a reformed recycle gas flow rate control method useful for a small fuel cell power generation system of 1 to several kW class by introducing a system configured to mix reformed recycle gas with raw fuel gas Can do.

  That is, for example, if the gas flow rate control means is constituted by two gas filling containers connected in parallel to the reflux gas pipeline and two valve devices such as a three-way valve, the reformed gas is once filled into the container and the upstream side Is closed, then the downstream valve is opened, and the reformed gas is introduced into the raw fuel by the pressure difference from the vessel, while the reformed gas is introduced from one vessel to the other. When the pressure of the container in which the container is filled with the reformed gas and the reformed gas is supplied to the raw fuel is reduced, the reformed gas can be continuously supplied downstream by switching to another container.

  With the gas flow rate control means having such a configuration, it is possible to prevent the gas pipeline from being clogged due to condensation of moisture contained in the reformed recycle gas, and to supply the reformed recycle gas necessary for hydrodesulfurization as the raw fuel. Stable supply to gas.

  Although there is no restriction | limiting in particular in the raw fuel gas used in this invention, The city gas, LP gas, etc. which are supplied to a general household can be utilized preferably. Moreover, the supply gas pressure should just be a normal value, and the thing of 102.3-103.8kPa (abs) can be utilized preferably.

  Although there is no restriction | limiting in particular in the fuel cell used in this invention, A solid polymer type fuel cell and a phosphoric acid type fuel cell can be used preferably. In that case, if the fuel cell power generation system has a power generation output of 0.5 to 3 kW, the fuel cell power generation device of the present invention is more effectively configured.

  In a small fuel cell power generation system, the hydrogen gas concentration of the reformed recycle gas flowing into the reflux gas pipe is usually 60 to 70%, and the gas pressure and flow rate are 106 to 116 kPa ( abs), about 0.7 to 4.2 L / min. Therefore, in order to mix the reformed recycle gas for desulfurization with the raw fuel gas supplied at a flow rate of about 2.1 to 13 L / min so that the hydrogen gas concentration is about 5 to 15%, The path diameter is preferably 3 to 6 mm, and the capacity of the gas-filled container is preferably 0.2 to 1 L.

In order to cause the reformed recycle gas for desulfurization to flow into the gas pipe to which the raw fuel gas is supplied through the reflux gas pipe, passive inflow due to the difference in back pressure in the gas pipe may be used. , place the gas compressor upstream of the desulfurizer, if the reforming recycle gas is mixed raw fuel gas to flow into the desulfurizer after flowing through the gas compressor, the raw fuel gas supplied Due to the difference in gas pressure with the reformed recycle gas in the reflux gas line, the required amount of the desulfurized reformed recycle gas can be introduced into the suction side of the gas compressor, which is preferable.

  The mixing of the raw fuel gas and the reformed recycle gas for desulfurization may be performed by passive diffusion of the reformed recycle gas that has flowed into the gas pipe to which the raw fuel gas is supplied through the reflux gas pipe. You may give a device, such as providing a buffer area for mixing in a way.

Carbon monoxide (CO) generated in the reforming reaction is usually reduced by circulating it through a CO concentration reducer. However, when a polymer electrolyte fuel cell is used, CO in the reformed gas used as fuel is an electrolyte. In order to reduce the function of the membrane, it is necessary to reduce the CO concentration to about 10 ppm or less, and further to the downstream of the CO converter for reducing the CO concentration to about 1%, it is further oxidized by oxygen in the air. A CO selective oxidizer is provided to selectively oxidize carbon. In this case, nitrogen is mixed into the reformed gas that has passed through the CO selective oxidizer. However, since nitrogen becomes ammonia in the reformer and deteriorates the characteristics of the fuel cell, such reformed gas containing nitrogen is used as fuel. It is not preferable to flow into the battery . Therefore, in the case where a CO selective oxidizer is provided to perform the CO selective oxidation reaction, the reflux gas line is preferably configured to branch downstream from the CO modifier and upstream from the CO selective oxidizer.

  Since the series of reactions such as hydrodesulfurization, steam reforming, CO conversion, etc. are reactions under high temperature conditions, the reformed gas flowing into the reflux gas line is at a high temperature of about 120 to 150 ° C., Due to heat dissipation during circulation in the reflux gas pipe, the temperature is exposed to an environmental temperature below the dew point, which causes blockage due to condensation of water vapor contained in the reformed gas. Therefore, the reformed gas flowing into the reflux gas pipeline is arranged so as to flow through a steam condenser / separator for condensing and separating water vapor, and moisture is removed from the reformed gas flowing into the reflux gas pipeline. preferable.

  Hereinafter, the present invention will be described in more detail with reference to the drawings, but the present invention is not limited thereto.

  FIG. 1 is a configuration diagram schematically showing one embodiment of a fuel cell power generator according to the present invention. This embodiment is applied to a fuel cell power generator that uses city gas as raw fuel gas.

In this fuel cell power generation system, city gas is the raw fuel gas, a gas line indicated by an arrow a straight line in the figure, a gas compressor 9, the desulfurizer 3, the reformer 4, the CO in the reformed gas steam Of the CO converter 5 that converts to carbon dioxide (CO ₂ ) and hydrogen, and the CO selective oxidizer 6 that further reduces CO contained in the reformed gas from the CO converter 5 to about 10 ppm or less. passes sequentially reformed gas reformed into hydrogen-rich gas is supplied to the anode 21 of the fuel cell 7 in the fuel cell. In addition, 22 is a cathode electrode side and 23 is an electrolyte.

Also, a reflux gas pipe arranged so that the gas pipe branched from the middle of the gas pipe of the CO converter 5 and the CO selective oxidizer 6 is returned to the gas pipe to which the raw fuel gas is supplied again. Is formed. A part of the reformed gas that has been treated by the CO converter 5 and reformed into a hydrogen-rich gas flows through the reflux gas line and is mixed with the city gas that is the raw fuel.

The hydrogen-rich reformed gas flowing into the reflux gas line from the CO converter 5 is cooled in the steam separator 8 to remove moisture, and then flows into the flow rate control means 20. Then, at a flow rate control unit 20, while being controlled flow rate are mixed in city gas, it is supplied to the desulfurizer 3 through the gas compressor 9.

  FIG. 2 is a schematic view of an embodiment of the gas flow rate control means introduced into the fuel cell power generator of the present invention. The flow rate control means shown in FIG. 2 (a) is employed in the embodiment of FIG. 1, and two gas filling containers 1 are connected in parallel to the gas pipeline, and the upstream side of the gas pipeline and A three-way valve 2 that is a valve device is disposed on the downstream side.

  Here, the gas flowing through the gas pipe is once filled in the gas filling container 1a, then the upstream valve is closed and the downstream valve is opened, and the gas flows out of the gas filling container 1a due to the pressure difference. . Meanwhile, in the gas filling container 1b, the downstream valve is closed and the upstream valve is opened, so that the gas is filled. Then, by switching the three-way valve at the stage where the gas pressure in the gas filling container 1a is lowered due to the outflow of gas, this time, the valve on the upstream side of the gas filling container 1a is opened and the valve on the downstream side is closed, The valve on the upstream side of the filling container 1b is closed, the valve on the downstream side is opened, and the gas flows out from the gas filling container 1b downstream. Thus, the gas can be continuously supplied to the downstream side while adjusting the gas pressure.

  Further, in the flow rate control means according to another embodiment shown in FIG. 2 (b), the gas filling containers 1c and 1d respectively arranged on the upstream side of the two gas filling containers 1a and 1b are provided in the gas pipeline. Connected in series. According to this aspect, by connecting two reformed gas tanks in series, the amount of gas flow to the gas filling container 1a (or 1b) disposed downstream is limited, and the recycle gas flow rate can be limited. it can.

  In the embodiment shown in FIG. 2 (a), FIG. 3 shows that each container has a volume of 1 liter, a gas flow path switching time of 6 seconds, a gas temperature of 50 ° C., and a gas during the closing of the downstream valve. When the initial value of the back pressure P1 of the gas flowing into and staying in the filling container 1a (or 1b) is 113.3 kPa (abs) and the pressure P2 at the fuel gas compressor inlet is a constant value of 101.3 kPa (abs) The result of having simulated the behavior of the gas pressure in a gas filling container and the gas flow rate to the downstream side is shown.

  In the simulation, it is assumed that the flow rate F (mol / s) of the recycle gas flowing out from the container (molar amount of the recycle gas flowing out from the container per unit time) can be expressed as a function of the pressure difference between P1 and P2. (1) is used, and the gas pressure P1 can be expressed as a function of the molar amount n (mol) of the recycle gas filled in the gas filling container, and the following formula (2) is used.

In addition, K in Numerical formula (1) is a flow coefficient which changes with piping structures etc., and the value was 2 * 10 < ^-8 > (mol / s * Pa) here. In addition, R in the mathematical formula (2) is a gas constant of 83144 (J / mol · K), T is a temperature in the gas filling container 323 K, and V is a volume of the gas filling container of 0.001 m ³ . .

  FIG. 3A shows the result of simulating the change with time of the gas pressure in the gas filling container. Here, the gas pressure fluctuation obtained by the simulation is one cycle every 6 seconds, and one cycle of the gas pressure fluctuation is continued by switching the gas flow path from the two gas filling containers 1a and 1b. It is shown in the figure.

  FIG. 3 (b) shows the fluctuation of the flow rate of the recycle gas flowing out from the gas filling container (unit converted to NL / s) corresponding to the continuous cycle of the gas pressure fluctuation shown in FIG. 3 (a). Yes. That is, the flow rate of the gas that flows out from one gas-filled container to the downstream side decreases with a decrease in the pressure of the container for 6 seconds immediately after switching the gas flow path. In the next 6 seconds, the gas flows out from the other gas-filled containers in the same manner, so that the gas flow rate has a maximum value of 0.02 NL / s and a minimum value of 0.005 NL / s with a period of 6 seconds. Will change.

  Therefore, according to the embodiment of the gas flow rate control means in the present invention shown in FIG. 2 (a), the recycle gas flow rate is set to a preferable range of the recycle gas flow rate in a normally small fuel cell power generation device. As described above, it is possible to stably supply the denatured reformed recycle gas.

  The fuel cell power generator of the present invention can be used in an energy supply / use system that uses energy resources more efficiently, and can meet social demands for energy saving.

It is a lineblock diagram showing typically one embodiment of a fuel cell power generator of the present invention. It is a schematic diagram of embodiment of the gas flow control means in this invention. It is a figure which shows the result of having simulated the temporal change of the gas pressure in the gas filling container in this invention, and the gas outflow amount from a gas filling container.

Explanation of symbols

1, 1a, 1b, 1c Gas filling container 2 Three-way valve 3 Desulfurizer 4 Reformer 5 CO converter 6 CO selective oxidizer 7 Fuel cell 8 Water vapor separator 9 Gas compressor 20 Flow rate control means 21 Anode electrode side 22 Cathode electrode side 23 Electrolyte

Claims (4)

A desulfurizer for reducing the concentration of sulfur compounds contained in the raw fuel gas, a reformer for reforming the raw fuel gas treated by the desulfurizer into a hydrogen-rich reformed gas, and a treatment performed by the reformer and CO concentration reducer for reducing the concentration of carbon monoxide contained in the reformed gas, a fuel cell allowed to generate an electrical current by oxidation of hydrogen contained in the reformed gas processed by the CO concentration reducer, the raw fuel gas the desulfurizer and the reformer, and the CO concentration reducer and gas lines for circulating the fuel cell, a portion of the gas line between leading to the fuel cell from said reformer branch fuel with and becomes connected to the gas pipe disposed upstream of the desulfurizer and, and the reformed gas recirculation conduit Ru refluxed to the desulfurizer part as the modifying recycle gas in the gas In battery power generators,
The reflux gas pipeline has a plurality of parallel flow channels branched from the middle of the reflux gas pipeline, and a gas filling container is disposed in each of the parallel flow channels,
While the reformed recycle gas is allowed to flow into the gas filled container disposed in the flow path having the parallel flow path, the reformed recycle gas is transferred from the gas filled container disposed in the other flow path of the parallel flow path. A valve device that controls to alternately switch between a flow path for allowing the reformed recycle gas to flow in and a flow path for allowing the reformed recycle gas to flow out. A fuel cell power generation device arranged on a road . The CO concentration reduction comprises: a CO transformer for transforming carbon monoxide contained in the reformed gas processed by the reformer, the carbon monoxide contained in the treated reformate gas by the CO transformer A CO selective oxidizer that selectively oxidizes,
The reflux gas pipeline is branched from the middle of the gas pipeline between the CO converter and the CO selective oxidizer and connected to the gas pipeline arranged upstream of the desulfurizer. The fuel cell power generator according to claim 1. A gas compressor that pressurizes the raw fuel gas is disposed in the middle of the gas pipe disposed upstream of the desulfurizer,
3. The fuel cell power generator according to claim 1, wherein the recirculation gas pipe is arranged so that the reformed recycle gas is recirculated to the suction side of the gas compressor . Water vapor in the reformed recycle gas that flows out from the CO concentration reducer and flows into the reflux gas pipeline in the middle of the reflux gas pipeline arranged between the CO concentration reducer and the gas filling container The fuel cell power generator according to any one of claims 1 to 3, wherein a water vapor condensing separator for condensing and separating the fuel is disposed.

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