JPH05129030A - Simulation fuel cell - Google Patents

Abstract

PURPOSE:To facilitate an equipment adjusting work and save an adjusting time by using a simulation fuel cell by which the adjusting work for a fuel cell power generation equipment can be completed before a fuel cell body is incorporated into the equipment. CONSTITUTION:When assembly of a power generation equipment is completed except a fuel cell main body, a simulation fuel cell 1 is installed instead of the main body, and an adjusting work and a trial operation of the equipment are carried out. That is, an external output command 36 is sent to a control device, and an operation of the equipment is started, and oxidating agent gas 2 is supplied to an oxidating agent passage 8, and fuel gas 4 is supplied to a fuel gas passage 11. A density 18 of the oxidating agent gas, a density 20 of the fuel gas 4, an input side temperature 22 of the fuel gas 4 and a temperature 24 and a pressure 26 of anode discharge gas 60 are detected, and respective voltage correction values 28, 30, 32 and 34 are sent to an operation control device 44, and an output 39 is simulated together with an electric current value 37. Simultaneously, a calorific value and a quantity of the fuel gas 4 is also simulated. Thereby, the main body can be incorporated into the equipment in a short time without damaging the fuel cell body.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a simulated fuel cell.

[0002]

2. Description of the Related Art Currently, fuel cell power generation equipment is under development as a next-generation power generation equipment.

In the fuel cell power generation equipment, the entire fuel cell power generation equipment excluding the fuel cell main body is assembled on site, and when the fuel cell power generation equipment is completed, the fuel cell main body separately manufactured in the factory etc. Embedded, then
It is constructed so that adjustment work can be carried out while performing test runs.

[0004]

However, the above-mentioned fuel cell power generation facility has the following problems.

That is, if the fuel cell main body is assembled with the fuel cell power generation equipment completed except for the fuel cell main body and the trial run is performed, the fuel cell main body may be damaged. While it is necessary to complete the adjustment of the fuel cell power generation equipment at the stage before incorporating the main body, there is a contradiction that the adjustment work of the fuel cell power generation equipment cannot be performed if the fuel cell main body is not incorporated, It is difficult to adjust the fuel cell power generation facility, and there is a risk of spending unnecessary time for the adjustment work of the fuel cell power generation facility.

In view of the above situation, it is an object of the present invention to provide a simulated fuel cell in which the adjustment work of the fuel cell power generation equipment can be completed before the fuel cell body is assembled. ..

[0007]

According to the present invention, a cathode heater 3 through which an oxidant gas 2 can flow, and an anode heater 5 through which a fuel gas 4 can flow are provided inside. A steam supply passage 15 capable of supplying water vapor 59 is connected to the 4th inlet side, and a fuel gas discharge passage 17 capable of discharging a part of the anode exhaust gas 60 to the outside of the system is provided at the fuel gas 4 outlet side of the anode heater 5. Further, an analyzer 19 capable of detecting the composition or concentration 18 of the oxidant gas 2 is provided on the oxidant gas 2 inlet side of the cathode heater 3, and
An analyzer 21 capable of detecting the composition or concentration 20 of the fuel gas 4 and a temperature detector 23 capable of detecting the temperature 22 of the fuel gas 4 are provided on the fuel gas 4 inlet side of the anode heater 5, and the fuel of the anode heater 5 is provided. A temperature detector 25 capable of detecting the temperature 24 of the anode exhaust gas 60 and a pressure detector 27 capable of detecting the pressure 26 of the anode exhaust gas 60 are provided on the gas 4 outlet side, and an external output command 36 and each detector 19, Two
Detection signals 18, 20, 2 from 1, 23, 25, 27
2, 24 and 26 are input to the heater power sources 10 and 13 for the cathode heater 3 and the anode heater 5, and the vapor supply path 1
The flow rate control valve 14 of No. 5 and the flow rate control valve 16 of the fuel gas discharge path 17 are provided with an arithmetic and control unit 44 for sending control commands 40, 41, 42, 43. is there.

[0008]

According to the present invention, the arithmetic and control unit 44 includes the arithmetic unit 3
Current value 37 from 8 and oxidizer gas 2 from analyzer 19
18 of fuel gas and 20 of fuel gas 4 from analyzer 21
And the temperature 22 of the fuel gas 4 from the temperature detector 23 and the temperature 24 of the anode exhaust gas 60 from the temperature detector 25.
And the pressure 26 of the anode exhaust gas 60 from the pressure detector 27 are input and a predetermined calculation is performed to simulate the output of the fuel cell.

The arithmetic and control unit 44 obtains the heat generation amount of the fuel cell based on the current value 37 and the detection signals 18, 20, 22, 24 and 26, and supplies it to the heater power sources 10 and 13 of the cathode heater 3 and the anode heater 5. By sending the control commands 40 and 41 to cause the cathode heater 3 and the anode heater 5 to generate heat, the calorific value of the fuel cell is simulated.

The arithmetic and control unit 44 obtains the reaction amount of the fuel gas 4 in the anode based on the current value 37, and sends a control command 42 to the flow rate adjusting valve 14 of the vapor supply path 15 to send the steam 60 into the anode heater 5. By supplying
A simulation of the increased amount of gas in the reaction at the anode is performed.

The arithmetic and control unit 44 obtains the reaction amount of the fuel gas 4 at the anode based on the current value 37, sends a control command 43 to the flow rate adjusting valve 16 of the fuel gas discharge passage 17, and discharges it from the anode heater 5. By taking out a part of the anode heater exhaust gas 60 to the outside of the system, the amount of unreacted fuel gas 4 in the anode heater exhaust gas 60 sent to the subsequent process is simulated.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.

A simulated fuel cell 1 which can be installed as a substitute for the fuel cell main body is provided in the fuel cell power generation facility.

The simulated fuel cell 1 has an oxidant gas 2 inside.
It is mainly configured by a simulated fuel cell main body 6 having a cathode heater 3 capable of circulating the fuel gas and an anode heater 5 capable of circulating the fuel gas 4 therein, and a control unit 7 for controlling the simulated fuel cell main body 6. ..

The cathode heater 3 of the simulated fuel cell main body 6 is connected in the middle of the oxidant gas flow path 8, and a heater power source 10 is connected to the heater portion 9.

Further, the anode heater 5 is connected in the middle of the fuel gas flow path 11 and the heater portion 1 thereof is provided.
The heater power supply 13 is connected to the heater 2.

Further, a vapor supply passage 15 having a flow rate adjusting valve 14 is connected to the fuel gas 4 inlet side of the anode heater 5, and the flow rate adjusting side is connected to the fuel gas 4 outlet side of the anode heater 5. A fuel gas discharge passage 17 having a valve 16 is connected.

The control unit 7 controls the composition or concentration of the oxidant gas 2 on the inlet side of the oxidant gas 2 of the cathode heater 3.
Analyzer 19 for detecting (hereinafter, simply referred to as concentration 18)
Also, on the inlet side of the fuel gas 4 of the anode heater 5, an analyzer 21 for detecting the composition or concentration 20 (hereinafter, simply referred to as concentration 20) of the fuel gas 4 and a temperature 22 of the fuel gas 4 are detected in the same manner as described above. The temperature detector 23 is further provided on the outlet side of the fuel gas 4 of the anode heater 5 with a temperature detector 25 for detecting the temperature 24 of the anode exhaust gas 60 and a pressure detector 27 for detecting the pressure 26 of the anode exhaust gas 60. There is.

The control unit 7 also calculates the voltage correction value 28 corresponding to the concentration 18 of the oxidant gas 2 detected by the analyzer 19, and the fuel gas 4 detected by the analyzer 21. Voltage correction unit 30 for calculating the voltage correction value 30 according to the density 20 of the
The voltage calculation unit 33 for calculating a voltage correction value 32 according to the average value of the temperatures 22 and 24 on the inlet side and the outlet side of the fuel gas 4 detected by the anode heater 5, and the fuel gas 4 detected by the pressure detector 27. And a voltage calculation unit 35 that calculates a voltage correction value 34 according to the pressure 26 of FIG.

Then, the voltage calculation units 29, 31, 33,
A current value 37 from a current calculator 38 that obtains a current value 37 to be output by the fuel cell main body based on voltage correction values 28, 30, 32, 34 from 35 and an output command 36 from the outside.
And a predetermined calculation is performed to obtain the output 39 of the fuel cell main body, and the control commands 40, 41, 42, 43 are sent to the heater power supplies 10, 13 and the flow rate adjusting valves 14, 16 as well. 44 are provided.

Reference numeral 59 in FIG. 1 denotes water vapor supplied from the vapor supply path 15 to the inside of the anode heater 5.

FIG. 2 is a schematic view of the fuel cell power generation facility 45. In the figure, 46 is a fuel cell main body in which an electrolyte 47 is sandwiched between a cathode 48 and an anode 49, and 50 is a pressure for accommodating the fuel cell main body 46. A container, 51 is a raw fuel gas, 52 is a reformer for converting the raw fuel gas 51 and steam 59 flowing through the reforming side 54 into hydrogen and carbon monoxide by the heat generated on the combustion side 53, and 55 is an anode 49. Air-water separator for separating the gas into water, 56 is a compressor for sucking air 57,
Reference numeral 58 designates a turbine for driving the compressor 56, and 61, 6
Reference numeral 2 is a blower that circulates gas, and 63 and 64 are concentration detectors provided on the inlet and outlet sides of the cathode heater 3.

Next, the operation will be described.

When the assembly work of the fuel cell power generation equipment 45 excluding the fuel cell main body 46 is completed, the simulated fuel cell 1 is installed in place of the fuel cell main body 46, and the adjustment work of the fuel cell power generation equipment 45 is performed as follows. And perform a trial run.

That is, the external output command 36 is sent to a control device (not shown) of the fuel cell power generation facility 45 to start the operation of the fuel cell power generation facility 45, and the oxidant gas 2 is supplied to the oxidant gas flow path 8. The fuel gas 4 is supplied to the fuel gas passage 11.

To explain the above with reference to FIG. 2, the raw fuel gas 51 and the steam 59 first pass through the reforming side 54 of the reformer 52 and are converted into hydrogen and carbon monoxide by the heat generated on the combustion side 53. After that, it is supplied to the anode 49 (in this case, the anode heater 5) and used for the reaction. Then, the anode exhaust gas 60 that has exited the anode 49 is separated into steam and water through the steam / water separator 55, and is guided to the combustion side 53 of the reformer 52 by the blower 61.
The unreacted fuel gas 4 therein is used as a heat source by being burned on the combustion side 53 of the reformer 52, and then mixed with the air 57 sucked by the compressor 56,
The oxidizing gas 2 is introduced into the cathode 48 (in this case, the cathode heater 3) and used for the reaction. Part of the oxidant gas 2 emitted from the cathode heater 3 is the cathode 48.
To the inlet of the turbine by a blower 62 and then sent to a turbine 58 for use in driving the compressor 56.

At this time, the oxidant gas 2 of the cathode heater 3
On the inlet side, the analyzer 19 detects the composition or concentration 18 of the oxidant gas 2, and the voltage calculation unit 29 calculates the voltage correction value 28 (ΔVox) corresponding to the concentration 18 based on the concentration 18 to correct the voltage. The value 28 is sent to the arithmetic and control unit 44.

Similarly, on the fuel gas 4 inlet side of the anode heater 5, the analyzer 21 indicates that the composition or concentration of the fuel gas 4 is 20.
Is detected, the voltage calculation unit 31 calculates the voltage correction value 30 (ΔVf) corresponding to the density 20 based on the density 20, and sends the voltage correction value 30 to the calculation control device 44.

On the fuel gas 4 inlet side of the anode heater 5, the temperature detector 23 detects the temperature 22 of the fuel gas 4, and on the fuel gas 4 outlet side of the anode heater 5, the temperature detector 25 detects the anode exhaust gas 60. The temperature 24 is detected, and the temperature 2
2 and 24, the voltage calculation unit 33 takes the average value of the temperatures 22 and 24, and the voltage correction value 32 (ΔV
t) is obtained by calculation, and the voltage correction value 32 is sent to the calculation control device 44.

Further, on the outlet side of the fuel gas 4 of the anode heater 5, the pressure detector 27 detects the pressure 26 of the anode exhaust gas 60.
The voltage calculation unit 35 calculates the voltage correction value 34 (ΔVp) corresponding to the pressure 26 based on the pressure 26, and sends the voltage correction value 34 to the calculation control device 44.

The arithmetic and control unit 44 uses the fuel cell main body 4 which is calculated by the current calculator 38 based on the output command 36.
6 inputs the current value 37 (I) to be output, and the current value 3
The voltage correction value ΔVi corresponding to 7 is obtained, and the voltage correction values ΔVox, ΔVf, ΔVt, ΔVp, and ΔVi are added to the reference voltage Va.
By adding and according to the following equation, the voltage value (V) to be newly output by the fuel cell main body 46 is obtained.

V = Va + ΔVox + ΔVf + ΔVt + ΔVp + ΔVi

Then, the arithmetic and control unit 44 obtains the output 39 (unit = watt) of the fuel cell main body 46 by multiplying the voltage value (V) and the current value 37 (I), and the output 39 is used as the fuel cell power generation equipment. 45 to a control device (not shown). As a result, the output 39 of the fuel cell body 46 is simulated.

Further, if the output 39 of the fuel cell main body 46 is obtained, the calorific value (unit = calorie) of the fuel cell main body 46 can be calculated from the output 39. Therefore, the arithmetic control unit 44 calculates the calorific value, Heater power supply 10 based on the amount of heat generation,
13 sends control commands 40 and 41 to the cathode heater 3
Also, the anode heater 5 is caused to generate heat. This simulates the amount of heat generated by the fuel cell body 46.

The amount of heat generated is distributed to the cathode heater 3 and the anode heater 5 by calculating the heat balance.

Next, as a result of the reaction occurring in the fuel cell main body 46, the amount of the anode exhaust gas 60 discharged from the anode heater 5 increases as compared with the amount of the fuel gas 4 supplied to the anode heater 5, but the current value is increased. If 37 is obtained, the reaction amount of the fuel cell main body 46 is known, so the arithmetic and control unit 44 calculates the increase amount of the gas on the anode 49 side and sends a control command 42 to the flow rate adjusting valve 14 to send the flow rate adjusting valve 14 The opening degree of is adjusted to supply the steam 59 to the inside of the anode heater 5 from the steam supply passage 15 by the amount of increase in the gas. This simulates the increased amount of gas on the anode 49 side.

Further, as described above, the anode exhaust gas 60 that has exited the anode 49 is then sent to the combustion side 53 of the reformer 52, and the unreacted fuel gas in the anode exhaust gas 60 is separated into 4 minutes. However, in the simulated fuel cell 1, since no actual reaction is performed, the fuel gas 4 supplied to the anode heater 5 is directly sent to the combustion side 53 of the reformer 52. Therefore, the arithmetic and control unit 4
4 calculates the amount of unreacted fuel gas 4 to be contained in the anode exhaust gas 60 based on the reaction amount of the fuel cell main body 46, and sends the fuel gas exhaust passage 17 to the flow rate adjusting valve 16,
The opening degree of the flow rate adjusting valve 16 is adjusted to discharge the anode exhaust gas 60 in an amount corresponding to the reacted fuel gas 4. This simulates the amount of unreacted fuel gas 4 that should be contained in the anode exhaust gas 60 sent to the combustion side 53 of the reformer 52.

As described above, by using the simulated fuel cell 1, the adjustment work of the fuel cell power generation facility 45 can be performed without any trouble without the fuel cell main body 46, so that the fuel cell main body 46 is damaged. Instead, it can be incorporated into the fuel cell power generation facility 45 in a short time.

The present invention is not limited to the above-mentioned embodiment, but the voltage calculation units 29, 31, 33, 35.
It is needless to say that the current calculation unit 38 and the current calculation unit 38 may be integrated with the calculation control device 44, and that various changes may be made without departing from the scope of the present invention.

[0041]

As described above, according to the simulated fuel cell of the present invention, the excellent effect that the adjustment work of the fuel cell power generation equipment can be completed before the fuel cell main body is assembled can be achieved.

[Brief description of drawings]

FIG. 1 is an overall system diagram of an embodiment of the present invention.

FIG. 2 is an overall schematic system diagram of a general fuel cell power generation facility.

[Explanation of symbols]

 1 Simulated Fuel Cell 2 Oxidant Gas 3 Cathode Heater 4 Fuel Gas 5 Anode Heater 10,13 Heater Power Supply 14,16 Flow Rate Control Valve 15 Steam Supply Channel 16 Flow Rate Control Valve 17 Fuel Gas Discharge Channel 18,20 Concentration 19,21 Analyzer 21 Analyzer 22, 24 Temperature 23, 25 Temperature Detector 26 Pressure 27 Pressure Detector 36 External Output Command 40, 41, 42, 43 Control Command 44 Arithmetic Control Device 59 Water Vapor 60 Anode Exhaust Gas

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mutsumi Ikukoshi 3-15-1, Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toni Technical Center

Claims (1)

[Claims] 1. A cathode heater 3 which can circulate an oxidant gas 2 inside, and an anode heater 5 which can circulate a fuel gas 4 inside are provided, and steam 59 is supplied to the fuel gas 4 inlet side of the anode heater 5. A fuel gas discharge passage 17 capable of discharging a part of the anode exhaust gas 60 to the outside of the system is provided on the fuel gas 4 outlet side of the anode heater 5, and the oxidation of the cathode heater 3 is further performed. An analyzer 19 capable of detecting the composition or concentration 18 of the oxidant gas 2 is provided on the inlet side of the agent gas 2, and an analyzer capable of detecting the composition or concentration 20 of the fuel gas 4 on the inlet side of the fuel gas 4 of the anode heater 5. 21 and a temperature detector 23 capable of detecting the temperature 22 of the fuel gas 4, and a temperature detector 25 capable of detecting the temperature 24 of the anode exhaust gas 60 on the outlet side of the fuel gas 4 of the anode heater 5. And the pressure 2 of the anode exhaust gas 60
6, a pressure detector 27 capable of detecting 6 is provided, and the output signal 36 from the outside and the detection signals 18, 20, 22, 24, 26 from the detectors 19, 21, 23, 25, 27 are input to the cathode heater 3. And the heater power supply 10, 1 for the anode heater 5
3, and the flow rate adjusting valve 14 of the steam supply path 15, and
A control command 40 is issued to the flow rate adjusting valve 16 of the fuel gas discharge path 17,
A simulated fuel cell comprising an arithmetic control unit 44 for sending 41, 42, 43.