CN119695212A - A methanol SOFC power generation device for commercial vehicles - Google Patents
A methanol SOFC power generation device for commercial vehicles Download PDFInfo
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- CN119695212A CN119695212A CN202411858650.XA CN202411858650A CN119695212A CN 119695212 A CN119695212 A CN 119695212A CN 202411858650 A CN202411858650 A CN 202411858650A CN 119695212 A CN119695212 A CN 119695212A
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Abstract
The invention provides a methanol SOFC power generation device for a commercial vehicle, which comprises a vaporizer, wherein the vaporizer is respectively connected with a methanol supply module and a low-temperature reformer, the low-temperature reformer is respectively connected with a combustor and a high-temperature reformer, the high-temperature reformer is respectively connected with a pile and an air heat exchanger, one side of the air heat exchanger is connected with a fan, the other side of the air heat exchanger is respectively connected with the high-temperature reformer, the combustor and the pile, one side of the combustor is connected with the pile, and the electric energy output of the pile is connected with high-voltage DC/DC of the commercial vehicle. The methanol SOFC power generation device is mounted on a commercial vehicle, can be used while charging, can be directly utilized, is not limited by a charging pile, can meet the charging and power utilization requirements of the commercial vehicle at any time and any place, is efficient and environment-friendly, reduces the emission of carbon dioxide, and is environment-friendly because the tail gas is water vapor and carbon dioxide without pollutants such as nitrogen oxide compounds.
Description
Technical Field
The invention relates to the field of methanol SOFC power generation, in particular to a methanol SOFC power generation device for a commercial vehicle.
Background
Methanol can be used as SOFC fuel after reforming, is an organic compound, is saturated monohydric alcohol with the simplest structure, is light, has strong volatility, is colorless and inflammable, and has very similar smell as ethanol (drinking wine). The methanol SOFC power generation device refers to a vehicle-mounted system device using methanol as a fuel and using a solid oxide fuel cell as a power generation unit.
Commercial vehicles refer to vehicles that are production data and are intended for operation, such as taxis, buses, trucks, construction machines, agricultural equipment, mining machinery, and ships.
In the issued Chinese patent publication No. CN209401750U, the name of a methanol-based fuel cell hybrid power generation system is that PEMFC and SOFC are simultaneously utilized to generate power, the PEMFC and SOFC respectively operate at low temperature and high temperature, the cascade utilization of hydrogen can be realized, the fuel utilization rate of hydrogen is improved, and the power generation efficiency of the system is improved, but pure methanol and nitrogen are needed to be provided in the application, the pure methanol is used as fuel, the heat is released by direct combustion, the tail gas after combustion does not enter a pile to participate in electrochemical reaction and discharge, so that the power generation efficiency is reduced, the consumption energy is large, and the fuel is not suitable for the use of the commercial vehicle.
Disclosure of Invention
The invention aims to overcome the defects of low power generation efficiency and high energy consumption in the prior art, and provides a methanol SOFC power generation device for a commercial vehicle.
The invention solves the technical problems by the following technical scheme:
The invention provides a methanol SOFC power generation device for a commercial vehicle, which comprises a vaporizer, wherein one side of the vaporizer is connected with a methanol supply module, and the other side of the vaporizer is connected with a low-temperature reformer;
The low-temperature reformer is connected with the burner on one side, and is connected with the high-temperature reformer on the other side;
The high-temperature reformer is connected with the electric pile on one side and connected with the air heat exchanger on the other side;
The air heat exchanger is connected with the fan on one side, and is connected with the high-temperature reformer, the burner and the electric pile on the other side respectively;
The burner is connected with the galvanic pile at one side;
a stack, the electrical power output of which is connected to the high voltage DC/DC of the commercial vehicle.
In this technical scheme, carry on commercial vehicle with methanol SOFC power generation facility, can accomplish to fill simultaneously and use, also can directly utilize, not receive the restriction of charging the stake, can satisfy commercial vehicle at any time and any place and charge and power consumption demand, and high-efficient environmental protection, methanol SOFC power generation facility ionizes hydrogen and oxygen at high temperature, combine vapor, and release electric energy, generating efficiency is high, product competitiveness has been improved, the emission of carbon dioxide has been reduced, exhaust emission is vapor and carbon dioxide, pollutants such as nitrogen oxide free compound, environmental protection not only, and the new energy vehicle winter heating problem can be solved to high-quality exhaust gas, adopt methanol water as fuel simultaneously, the energy consumption is little.
Preferably, the methanol supply module comprises a methanol water pump and a methanol water tank, and the methanol water pump and the methanol water tank are connected with each other.
In the technical scheme, the methanol water is sent into the vaporizer by the methanol supply module.
Preferably, the fuel inlet of the vaporizer is connected with a methanol water pump, and the fuel outlet of the vaporizer is connected with a low-temperature reformer;
The flue gas inlet of the vaporizer is connected with the flue gas outlet of the low-temperature reformer, and the flue gas outlet of the vaporizer is connected with the flue gas inlet of the waste heat exchanger.
In the technical scheme, the methanol water is gasified by a carburetor.
Preferably, the low-temperature reformer is internally filled with a low-temperature reforming catalyst;
the fuel inlet of the low-temperature reformer is connected with the fuel outlet of the vaporizer;
the fuel outlet of the low-temperature reformer is divided into two paths, wherein one path is connected with the burner through a solenoid valve for combustion, and the other path is connected with the high-temperature reformer through a solenoid valve for power generation.
In the technical scheme, the methanol water is reformed into the hydrogen-rich gas by using a low-temperature reformer.
Preferably, the flue gas inlet of the low-temperature reformer is connected with the flue gas outlet of the high-temperature reformer, and the flue gas outlet of the low-temperature reformer is connected with the flue gas inlet of the vaporizer.
Preferably, the high temperature reformer is internally filled with an oil high temperature reforming catalyst;
The fuel inlet of the high-temperature reformer is connected with the low-temperature reformer through an electromagnetic valve for power generation, and the fuel outlet of the high-temperature reformer is connected with the anode air inlet of the electric pile;
The flue gas inlet of the high-temperature reformer is connected with the flue gas outlet of the air heat exchanger, and the flue gas outlet of the high-temperature reformer is connected with the flue gas inlet of the low-temperature reformer.
In the technical scheme, the methanol water which is not completely reformed is continuously reformed by the high-temperature reformer under the action of the high-temperature reforming catalyst, and the content of generated hydrogen is more.
Preferably, an air inlet of the air heat exchanger is connected with a fan, and an air outlet of the air heat exchanger is connected with cathode air inlet of the electric pile;
The flue gas inlet of the air heat exchanger is connected with the burner, and the flue gas outlet of the air heat exchanger is connected with the high-temperature reformer.
In the technical scheme, the air heat exchanger is utilized for air heat exchange.
Preferably, the inlet of the combustor is provided with three paths, the first path is connected with the low-temperature reformer through a combustion electromagnetic valve, the second path is connected with anode tail gas of the electric pile, and the third path is connected with cathode tail gas of the electric pile;
The outlet of the burner is connected with the flue gas inlet of the air heat exchanger.
In the technical scheme, hydrogen-rich gas of the methanol-water reforming structure enters a combustor and is combusted with air in the combustor.
Preferably, an oxygen sensor is arranged in the combustor, and the oxygen sensor is used for detecting the oxygen content in the combustion tail gas.
In the technical scheme, an oxygen sensor is utilized to detect the oxygen content in the combustion tail gas.
Preferably, the material inlets and outlets of the electric pile are respectively anode inlet air, cathode inlet air, anode tail gas and cathode tail gas;
the anode inlet is connected with the outlet of the high-temperature reformer, and the cathode inlet is connected with the outlet of the air heat exchanger;
the anode tail gas and the cathode tail gas are respectively connected with corresponding positions of the burner.
In the technical scheme, anode gas and cathode gas which are not fully reacted in the electric pile enter the burner through anode tail gas and cathode tail gas, burn in the burner and supply heat to each stage of heat exchangers, and the high-temperature waste heat can be used for heating in a vehicle.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
The methanol SOFC power generation device is carried on a commercial vehicle, can be used while charging, can be directly utilized without being limited by a charging pile, can meet the requirements of charging and power consumption of the commercial vehicle at any time and any place, is efficient and environment-friendly, ionizes hydrogen and oxygen at high temperature, combines the hydrogen and the oxygen into water vapor, releases electric energy, has high power generation efficiency, improves the product competitiveness, reduces the emission of carbon dioxide, and is environment-friendly, and the tail gas emission is water vapor and carbon dioxide without pollutants such as nitrogen oxide compounds.
Drawings
Fig. 1 is a schematic structural diagram of a methanol SOFC power generation device for a commercial vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a commercial vehicle architecture of the methanol SOFC power plant for a commercial vehicle shown in fig. 1.
In the figure
1. A vaporizer;
2. a low temperature reformer;
3. a high temperature reformer;
4. an air heat exchanger;
5. A burner;
6. a galvanic pile;
7. A methanol supply module; 71, a methanol water pump, 72, a methanol water tank;
8. A blower;
9. High voltage DC/DC;
10. a waste heat exchanger;
11. a combustion solenoid valve;
12. an electromagnetic valve for power generation;
13. an oxygen sensor;
14. a storage battery;
15. a motor controller;
16. A motor body;
17. low voltage DC/DC.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Fig. 1 to 2 are schematic structural views showing an embodiment of a methanol SOFC power generation device for a commercial vehicle according to the present invention. A methanol SOFC power plant for a commercial vehicle comprises a vaporizer 1, one side of the vaporizer 1 is connected with a methanol supply module 7, and the other side of the vaporizer 1 is connected with a low-temperature reformer 2;
a low-temperature reformer 2, wherein one side of the low-temperature reformer 2 is connected with a combustor 5, and the other side of the low-temperature reformer 2 is connected with a high-temperature reformer 3;
A high-temperature reformer 3, wherein one side of the high-temperature reformer 3 is connected with a galvanic pile 6, and the other side of the high-temperature reformer 3 is connected with an air heat exchanger 4;
The air heat exchanger 4, one side of the air heat exchanger 4 is connected with the fan 8, and the other side of the air heat exchanger 4 is respectively connected with the high-temperature reformer 3, the combustor 5 and the electric pile 6;
a burner 5, wherein one side of the burner 5 is connected with a galvanic pile 6;
The electric pile 6, the electric power output of said pile 6 is connected to the high voltage DC/DC9 of the commercial vehicle.
When the range extender framework is used, the range extender is a methanol SOFC power generation device, and the electric energy output by the methanol SOFC power generation device is connected with the storage battery 14 in parallel after being converted by the high-voltage DC/DC9 to supply power to the commercial vehicle.
The front end of the methanol SOFC power generation device is supplied with fuel and air, the output electric energy of the rear end is converted by the high-voltage DC/DC9 and then is connected with the storage battery 14 in parallel, the power is transmitted to the motor controller 15, the motor body 16 is controlled to rotate, and the motor body 16 outputs power to the front wheels and the rear wheels of the commercial vehicle, so that the commercial vehicle can run;
the power consumption of the methanol SOFC power generation device is provided by the storage battery 14 after the conversion of the low-voltage DC/DC 17.
The invention adopts formaldehyde as fuel, can reduce emission due to the fuel characteristics, can further reduce CO2 emission and avoid NOX emission due to higher efficiency of the methanol SOFC.
In this technical scheme, carry on commercial vehicle with methanol SOFC power generation facility, can accomplish to fill simultaneously and use, also can directly utilize, not receive the restriction of charging the stake, can satisfy commercial vehicle at any time and any place and charge and power consumption demand, and high-efficient environmental protection, methanol SOFC power generation facility ionizes hydrogen and oxygen at high temperature, combine vapor, and release electric energy, generating efficiency is high, product competitiveness has been improved, the emission of carbon dioxide has been reduced, exhaust emission is vapor and carbon dioxide, pollutants such as nitrogen oxide free compound, environmental protection not only, and the new energy vehicle winter heating problem can be solved to high-quality exhaust gas, adopt methanol water as fuel simultaneously, the energy consumption is little.
The methanol supply module 7 includes a methanol water pump 71 and a methanol water tank 72, and the methanol water pump 71 and the methanol water tank 72 are connected to each other.
In the present embodiment, methanol water is fed into the vaporizer 1 by the methanol supply module 7.
The fuel inlet of the vaporizer 1 is connected with a methanol water pump 71, and the fuel outlet of the vaporizer 1 is connected with the low-temperature reformer 2;
the flue gas inlet of the vaporizer 1 is connected with the flue gas outlet of the low-temperature reformer 2, and the flue gas outlet of the vaporizer 1 is connected with the flue gas inlet of the waste heat exchanger 10.
In the present embodiment, methanol water is vaporized by a vaporizer 1.
The low-temperature reformer 2 is internally filled with a low-temperature reforming catalyst;
the fuel inlet of the low-temperature reformer 2 is connected with the fuel outlet of the vaporizer 1;
The fuel outlet of the low-temperature reformer 2 is divided into two paths, wherein one path is connected with the combustor 5 through a solenoid valve 11 for combustion, and the other path is connected with the high-temperature reformer 3 through a solenoid valve 12 for power generation.
The vaporizer 1 and the low-temperature reformer 2 are both internally provided with an electric heating starting device.
In the present embodiment, methanol water is reformed into a hydrogen-rich gas by the low temperature reformer 2.
The main reactions of hydrogen production by methanol-water reforming are:
CH3OH+H2O→CO2+3H2-49.4kJ/mol;
The whole reaction process is an endothermic reaction, and a heat source is required for the reforming reaction.
The flue gas inlet of the low-temperature reformer 2 is connected with the flue gas outlet of the high-temperature reformer 3, and the flue gas outlet of the low-temperature reformer 2 is connected with the flue gas inlet of the vaporizer 1.
The high-temperature reformer 3 is internally filled with an oil high-temperature reforming catalyst;
The fuel inlet of the high-temperature reformer 3 is connected with the low-temperature reformer 2 through a solenoid valve 12 for power generation, and the fuel outlet of the high-temperature reformer 3 is connected with the anode inlet of the electric pile 6;
the flue gas inlet of the high-temperature reformer 3 is connected with the flue gas outlet of the air heat exchanger 4, and the flue gas outlet of the high-temperature reformer 3 is connected with the flue gas inlet of the low-temperature reformer 2.
In the technical scheme, the methanol water which is not completely reformed is continuously reformed by the high-temperature reformer 3 under the action of the high-temperature reforming catalyst, and the content of generated hydrogen is more.
An air inlet of the air heat exchanger 4 is connected with a fan 8, and an air outlet of the air heat exchanger 4 is connected with cathode air inlet of the electric pile 6;
the flue gas inlet of the air heat exchanger 4 is connected with the burner 5, and the flue gas outlet of the air heat exchanger 4 is connected with the high-temperature reformer 3.
In the present technical solution, air heat exchange is performed by using the air heat exchanger 4.
The inlet of the combustor 5 is provided with three paths, the first path is connected with the low-temperature reformer 2 through a combustion electromagnetic valve 11, the second path is connected with anode tail gas of the electric pile 6, and the third path is connected with cathode tail gas of the electric pile 6;
The outlet of the burner 5 is connected with the flue gas inlet of the air heat exchanger 4.
In the technical scheme, the hydrogen-rich gas of the methanol-water reforming structure enters the combustor 5 and is combusted with air in the combustor 5.
The burner 5 is internally provided with an oxygen sensor 13, and the oxygen sensor 13 is used for detecting the oxygen content in the combustion tail gas.
In the present embodiment, the oxygen sensor 13 is used to detect the oxygen content in the combustion exhaust gas.
The material inlets and outlets of the electric pile 6 are respectively anode inlet air, cathode inlet air, anode tail gas and cathode tail gas;
the anode inlet is connected with the outlet of the high-temperature reformer 3, and the cathode inlet is connected with the outlet of the air heat exchanger 4;
the anode tail gas and the cathode tail gas are respectively connected with corresponding parts of the burner 5.
In the technical scheme, anode gas and cathode gas which are not fully reacted in the electric pile 6 enter the combustor 5 through anode tail gas and cathode tail gas, are combusted in the combustor 5 and supply heat to the heat exchangers of all stages, and high-temperature waste heat can be used for heating in a vehicle.
When the device is used in the whole process, the methanol water in the methanol water tank 72 is pumped into the vaporizer 1 by the methanol water pump 71, the methanol water is vaporized under the heat supply of the electric heating starting device and then enters the low-temperature reformer 2, and the methanol water is reformed into hydrogen-rich gas under the heat supply of the electric heating and the reforming catalysis;
in the starting stage of the methanol SOFC power generation device, a combustion electromagnetic valve 11 is opened, hydrogen-rich gas after methanol water reforming enters a combustor 5, the hydrogen-rich gas is combusted with air fed by an air path in the combustor 5, and the combusted flue gas supplies heat to an air heat exchanger 4, a high-temperature reformer 3, a low-temperature reformer 2 and a vaporizer 1;
When the temperature of the electric pile 6 rises and the condition of fuel feeding is achieved, the electromagnetic valve 12 for power generation is opened, the electromagnetic valve 11 for combustion is closed, the electric heating starting device is closed, at the moment, hydrogen-rich gas firstly enters the high-temperature reformer 3, methanol water which is not completely reformed is continuously reformed under the action of a high-temperature reforming catalyst, the content of generated hydrogen is more, the hydrogen-rich gas after high-temperature reforming enters the electric pile 6, and the hydrogen-rich gas reacts with air fed in from a cathode at a high temperature to generate steam and release electric energy;
Anode gas and cathode gas which are not fully reacted in the electric pile 6 enter the burner 5 through anode tail gas and cathode tail gas, burn in the burner 5, supply heat to each stage of heat exchangers, and high-temperature waste heat can be used for heating requirements in a vehicle.
Direct current generated by the methanol SOFC power generation device is converted by a high-voltage DC/DC9, is connected with a storage battery 14 in parallel, is transmitted to a motor controller 15, controls a motor body 16 to rotate, and the motor body 16 outputs power to front and rear wheels of a vehicle, so that the vehicle is operated;
in the standby state, the vehicle is not running, the output power of the motor body 16 is zero, and at this time, the electric energy generated by the methanol SOFC power generation device is supplied to the storage battery 14, that is, the storage battery 14 is charged.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
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| CN202411858650.XA CN119695212A (en) | 2024-12-17 | 2024-12-17 | A methanol SOFC power generation device for commercial vehicles |
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| CN202411858650.XA CN119695212A (en) | 2024-12-17 | 2024-12-17 | A methanol SOFC power generation device for commercial vehicles |
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