JP2008192415A - Fuel cell power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell power generation device increasing the efficiency and reducing cost of installation work of a temporary water treatment device and protecting the device from initial filling city water. <P>SOLUTION: The fuel cell power generation device has a water treatment device 12 for treating recovered water of the device, and the temporary water treatment device 41 performing water treatment prior to water treatment of water supplied from the outside of the device to the a city water supply line with a water treatment device 12 is detachably attached. The city water supply line for supplying water from the outside of the device is drawn to the outside of the device, and furthermore, a connection joint to which the temporary water treatment device is detachably connected and short-circuiting piping connected to the connecting joint in a state that the temporary water treatment device is separated and for short-circuiting the city water supply line are installed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fuel cell power generator.

In fuel cell power generators installed at home, the tanks inside the equipment need initial water filling (water filling) at the time of installation and installation of the power generator, but if city water (tap water) is used, Since components such as chlorine, calcium, and sodium in the water enter, an excessive load is temporarily applied to the water treatment apparatus installed in the power generation apparatus, and the life of the water treatment apparatus is shortened. Moreover, in some water treatment apparatuses, there is a type whose function is remarkably deteriorated due to components in city water, and water filling using city water is not preferable. In addition, about the water treatment technique in a fuel cell power generation system, it is disclosed by patent document 1-patent document 3, etc.
JP-A-8-222257 JP-A-8-7912 JP 2005-339889 A

  By the way, considering the installation work, the plumbing contractor needs to connect the city water pipe to the fuel cell power generator when installing the power generation equipment, but in order to avoid the above problems, the city water connected to the fuel cell power generator is required. When a temporary water treatment device is installed in the middle of the piping, the tester of the power generation device implemented by a power generation tester such as a fuel cell manufacturer or a gas supply company waits for completion, and then the removal of the temporary water treatment device and the piping are performed again. There is a problem that construction work for restoration is required and the human cost including the waiting time increases. In addition, it is not preferable to install a water treatment device for initial startup in the power generation device from the viewpoint of cost and compactness of the power generation device.

  The present invention has been made in view of the above circumstances, and its purpose is to protect the apparatus from the initial filling city water while reducing the cost as well as the efficiency of the installation work of the temporary water treatment apparatus. It is an object of the present invention to provide a fuel cell power generator capable of achieving the above.

In order to solve the above-described problems, a fuel cell power generation device according to the present invention is a fuel cell power generation device including a water treatment device for water-treating recovered water collected in the device, and is provided in the city water supply line. A temporary water treatment device for treating the water supplied from the outside of the device prior to the water treatment by the water treatment device is detachably connected.
According to this configuration, water from the outside of the device (for example, city water) supplied to the city water supply line is treated by the temporary water treatment device prior to water treatment by the water treatment device. In addition to protecting from city water, it is possible to increase the efficiency of installation work for the temporary water treatment device.

In the above configuration, a city water supply line for supplying water from the outside of the apparatus is led out of the apparatus, and a connection joint to which the temporary water treatment apparatus is detachably connected, and the temporary water treatment apparatus is detached. It is possible to adopt a configuration including a short-circuit pipe that is connected to the connection joint in a state of being connected to short-circuit the city water supply line.
According to this configuration, the city water in the city water supply line can be treated with the temporary water treatment device without providing a dedicated water treatment device for treating the city water in the city water supply line in the device. it can.

  ADVANTAGE OF THE INVENTION According to this invention, protection of the apparatus from initial filling city water is attained, reducing cost with efficiency improvement of the installation construction of a temporary water treatment apparatus.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings. FIG.1 and FIG.2 is a schematic block diagram of the principal part of the fuel cell electric power generating apparatus which concerns on one Embodiment of this invention, FIG. 1 is a figure which shows the state which connected the temporary water treatment apparatus. FIG. 2 is a diagram illustrating a state in which a short-circuit pipe is connected.
As shown in FIGS. 1 and 2, this fuel cell power generator includes a fuel cell main body 1, a desulfurizer 2, a reformer 3, a transformer 4, a CO remover 5, a battery cooling water tank 9, and a recovered water tank 10. , A degassing device 11, a water treatment device 12, a fuel preheater 21, an exhaust heat recovery device 22, and the like.

  The fuel cell main body 1 includes a fuel cell that sandwiches an electrolyte layer (not shown), an air electrode, and a cooling plate having a cooling path disposed for each unit cell composed of these. The fuel cell main body 1 generates electricity by causing an electrochemical reaction between the reformed gas generated by the reformer 3 and an oxidant gas (air).

  The desulfurizer 2 removes sulfur compounds contained in the raw fuel such as city gas and supplies it to the reformer 3. For example, the desulfurizer 2 adsorbs and removes sulfur compounds contained in raw fuel such as city gas using a desulfurization catalyst. The raw material gas in which the desulfurized raw fuel and water necessary for the reforming reaction are mixed is introduced into the reformer 3 to generate hydrogen.

  The reformer 3 reforms the raw fuel supplied together with the reforming steam supplied from the battery cooling water tank 9 by the pump 15 into a hydrogen-rich reformed gas by a steam reforming reaction. Combustion air is supplied to the reformer 3 from the air blower 6, and the combustion exhaust gas is sent to the fuel preheater 21 through the combustion exhaust gas line 24. The converter 4 is filled with a CO conversion catalyst, for example, a copper-zinc catalyst, and is operated while being maintained at a temperature of about 180 to 300 ° C. by the high-temperature reformed gas taken out from the reformer 3. . During this time, the oxidation (shift reaction) of CO in the reformed gas by steam occurs, and the concentration of CO in the reformed gas is reduced to about 1%. The reformed gas leaving the transformer 4 is subsequently sent to the CO remover 5. The CO remover 5 includes an air blower (not shown) and a cooling structure. The CO in the reformed gas is selectively oxidized by being mixed with oxygen in the air sent by the air blower, and passes through the CO remover 5. The CO concentration in the reformed gas after flowing is reduced to about 10 ppm. The reformed gas flowing through the CO remover 5 is supplied to the anode side electrode of the fuel cell body 1, that is, the fuel electrode, and contributes to the electrochemical reaction.

  The recovered water tank 10 accommodates water in the apparatus recovered from the fuel cell main body 1 and the like, and city water outside the apparatus is supplied through the city water supply line 50 when the fuel cell power generator is carried in and installed. If it is in a normal operating state, only the water collected in the recovery water tank from inside the device (compared with city water, the impurities are minute and the load given to the water treatment device is low) Because the necessary amount of water is covered (water independence), city water is not introduced into the power generation system under normal power generation conditions.

  The deaeration device 11 includes an aeration unit 13, and after degassing the carbon dioxide dissolved in the recovered water, the deaeration device 11 directly contacts the exhausted exhaust gas and the combustion exhaust gas to cool them, and the exhaust air and the combustion exhaust gas. The water vapor contained in the water is cooled and condensed to form water, which is stored in the recovered water tank 10. Uncondensed exhaust air and combustion gas are discharged to the outside together with carbon dioxide gas and the like deaerated by the deaerator 11.

  The exhaust heat recovery unit 22 uses the heat generated in the fuel cell main body 1 and the like to recover the exhaust heat by using cold water as warm water.

  In the water treatment device 12, the water in the device collected in the collected water tank 10 is supplied through the pump 14, purified by flowing this collected water (predetermined water treatment), and supplied to the battery cooling water tank 9. To do. If the water treated by the water treatment device 12 contains a large amount of components such as chlorine, calcium, and sodium, the load of the water treatment device 12 increases, the life of the water treatment device 12 is shortened, and Some water treatment systems may suffer irreversible damage.

  The connection joint 40 is provided in the middle of the city water supply line 50 for supplying city water to the recovered water tank 10 from the outside of the apparatus, and in order to lead a part of the city water supply line 50 to the outside of the apparatus. Is provided.

  As shown in FIG. 1, the temporary water treatment apparatus 41 is detachably connected to the connection joint 40 and removes components such as chlorine, calcium, and sodium contained in city water supplied from the city water supply line 50. The temporary water treatment device 41 is not permanently installed in the fuel cell power generation device. For example, the temporary water treatment device 41 is used when the fuel cell power generation device is initially installed in a home or the like and the recovered water tank 10 is initially filled with water. Is done. By supplying city water from which components such as chlorine, calcium and sodium have been removed by the temporary water treatment device 41 to the recovered water tank 10, the water treated by the water treatment device 12 has many components such as chlorine, calcium and sodium. It is never included. That is, the temporary water treatment device 41 plays a role of water treatment of city water from outside the device prior to water treatment by the water treatment device 12. Thereby, it can prevent that the load of the water treatment apparatus 12 in the initial water filling becomes excessive.

  As shown in FIG. 2, the temporary water treatment device 41 is removed from the connection joint 40 after the initial water filling is completed, and the short-circuit pipe 42 short-circuits the connection joint 40 instead. Thereby, after the initial water filling is completed, the temporary water treatment device 41 is not used, and the city water is directly supplied to the recovered water tank 10. After the temporary water treatment device 41 is removed from the connection joint 40, it is used in the same manner in other fuel cell power generation devices. In addition, since these operations can be performed without constructing the city water piping of the main construction, it is possible to easily carry out without being a piping contractor.

  According to the embodiment of the present invention, the water from the outside of the apparatus supplied to the city water supply line is treated by the temporary water treatment apparatus prior to the water treatment by the water treatment apparatus. It is possible to improve the efficiency of the installation work of the temporary water treatment device. That is, a city water supply line for supplying water from the outside of the apparatus is led out of the apparatus, and the connection joint to which the temporary water treatment apparatus is detachably connected and the connection in a state where the temporary water treatment apparatus is detached By providing a short-circuit pipe for short-circuiting the city water supply line connected to the joint, it becomes possible to install and remove the temporary water treatment device by an operation tester such as an operation tester. When installing the battery power generation device, the piping contractor can complete the main connection between the city water pipe and the fuel cell power generation device without waiting for the completion of the test of the power generation device. Moreover, the city water of a city water supply line can be water-treated with a temporary water treatment apparatus, without providing the exclusive water treatment apparatus for water-treating the city water of a city water supply line in an apparatus.

  The preferred embodiments of the present invention have been described above. However, the present invention can be variously modified and changed without departing from the concept of the claims.

It is a schematic structure figure of the important section of the fuel cell power generator concerning one embodiment of the present invention, and is a figure showing the state where the temporary water treatment device was connected. It is a schematic block diagram of the principal part of the fuel cell power generator concerning one embodiment of the present invention, and is a figure showing the state where short circuit piping was connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fuel cell main body 2 ... Desulfurizer 3 ... Reformer 4 ... Transformer 5 ... CO remover 6 ... Air blower 7 ... Air blower 8 ... Pump 9 ... Battery cooling water pump 10 ... Recovery water tank 11 ... Deaeration device DESCRIPTION OF SYMBOLS 12 ... Water treatment apparatus 14, 15 ... Pump 16 ... Valve 21 ... Fuel preheater 22 ... Exhaust heat recovery device 40 ... Connection joint 41 ... Temporary water treatment apparatus 42 ... Short-circuit piping 50 ... City water supply line

Claims (2)

A fuel cell power generator equipped with a water treatment device for treating the recovered water collected in the device,
A temporary water treatment device that treats water from outside the device prior to water treatment by the water treatment device is formed so as to be detachably connected.
A fuel cell power generator characterized by that. A connection joint for deriving a city water supply line for supplying water from the outside of the apparatus to the outside of the apparatus, and the temporary water treatment apparatus being detachably connected,
A short-circuit pipe for short-circuiting the city water supply line connected to the connection joint in a state in which the temporary water treatment device is detached;
The fuel cell power generator according to claim 1, comprising:

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