CN215566299U - Vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating - Google Patents
Vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating Download PDFInfo
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- CN215566299U CN215566299U CN202120758805.8U CN202120758805U CN215566299U CN 215566299 U CN215566299 U CN 215566299U CN 202120758805 U CN202120758805 U CN 202120758805U CN 215566299 U CN215566299 U CN 215566299U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model discloses a vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating. The vehicle-mounted hydrogen production device comprises a fuel tank, a fuel vaporization channel and a hydrogen production reactor; the fuel inlet and the vaporized fuel outlet of the fuel vaporization channel are respectively connected with the fuel tank and the hydrogen production reactor; a one-way valve I is arranged on a communication pipeline between the fuel vaporization channel and the fuel tank; the fuel vaporization channel is arranged in an exhaust pipe of the engine; a catalyst for catalyzing fuel to produce hydrogen is loaded in the hydrogen production reactor; a hydrogen outlet is arranged on the hydrogen production reactor and is connected with a hydrogen output pipeline, a cooler, a gas-water separator and a one-way valve II are arranged on the hydrogen output pipeline, and the other end of the hydrogen output pipeline is connected with a hydrogen storage device or an engine; the fuel tank is a methanol fuel tank, an ethanol fuel tank or a methanol-ethanol mixed fuel tank. The hydrogen generated by the utility model can be stored, and can also be sprayed into the engine cylinder body through the spraying device for the combustion of the engine so as to improve the combustion characteristic.
Description
Technical Field
The utility model relates to a vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating, and belongs to the technical field of hydrogen production.
Background
Hydrogen is a clean secondary energy source and is a trend of new energy field development in the world. Compared with traditional fossil fuels such as gasoline, diesel oil and natural gas, the hydrogen gas is clean in combustion and free of emission of particles, hydrocarbon, carbon monoxide and the like; if a lean combustion technology is adopted, the hydrogen combustion can further realize zero emission. Hydrogen has great potential to replace traditional fossil fuels, becoming the primary fuel for engines. Hydrogen is generally produced by using other energy sources through a certain method, and currently, a plurality of methods for producing hydrogen exist, such as: hydrogen production by fossil fuel, industrial byproduct hydrogen production, hydrogen production by water electrolysis, hydrogen production by ethanol reforming and the like.
The hydrogen production by the fossil fuel is suitable for large-scale hydrogen production, and the commonly used fossil fuel is natural gas, but is limited by the supply of raw materials and has pollution; the hydrogen production of the industrial byproduct adopts a pressure swing adsorption process, and the hydrogen is extracted from the coke oven gas of the byproduct in the coking industry, so the operation is mature and reliable, the cost is low, and the pollution is caused; the water electrolysis hydrogen production technology is mature, the efficiency is high, the process is simple, but the power consumption is large, and the cost is relatively high; in contrast, the hydrogen production by reforming methanol and/or ethanol has the characteristics of low investment, quick construction, no pollution and the like, and the methanol and/or ethanol as a raw material can be more easily obtained.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a vehicle-mounted methanol and/or ethanol hydrogen production device based on engine exhaust preheating.
The vehicle-mounted hydrogen production device based on engine tail gas preheating comprises a fuel tank, a fuel vaporization channel and a hydrogen production reactor;
a fuel inlet and a vaporized fuel outlet of the fuel vaporization channel are respectively connected with the fuel tank and the hydrogen production reactor;
a one-way valve I is arranged on a communication pipeline between the fuel vaporization channel and the fuel tank;
the fuel vaporization channel is arranged in an exhaust pipe of the engine;
a catalyst for catalyzing fuel to produce hydrogen is loaded in the hydrogen production reactor;
a heating rod is arranged in the hydrogen production reactor;
a hydrogen outlet is formed in the hydrogen production reactor and is connected with a hydrogen output pipeline, a cooler, a gas-water separator and a check valve II are arranged on the hydrogen output pipeline, and the other end of the hydrogen output pipeline is connected with a hydrogen storage device or an engine;
the fuel tank is a methanol fuel tank, an ethanol fuel tank or a methanol-ethanol mixed fuel tank.
In the vehicle-mounted hydrogen production device, the fuel vaporization channel and the communicating pipe of the fuel tank are further provided with the filter, the filter is arranged at the inlet of the one-way valve I, and impurities in methanol and/or ethanol are filtered out through the filter.
In the vehicle-mounted hydrogen production device, an overflow valve and a pressure regulating valve are sequentially arranged on a communicating pipeline between the fuel vaporization channel and the fuel tank, and the pressure regulating valve is arranged at an inlet of the filter;
the overflow valve is used for keeping the system pressure stable, redundant methanol and/or ethanol flows back to the fuel tank, and the pressure regulating valve is used for regulating the system pressure.
In the vehicle-mounted hydrogen production device, the fuel tank is internally provided with the fuel pump, the fuel pump is connected with the overflow valve, and the fuel pump is used for conveying methanol and/or ethanol.
In the vehicle-mounted hydrogen production device, a communicating pipeline between the fuel vaporization channel and the hydrogen production reactor is provided with a temperature and pressure sensor;
the temperature and pressure sensor monitors the temperature and pressure of the vaporized methanol and/or ethanol;
the temperature and pressure sensor is connected with the controller to realize the control of the temperature and pressure sensor.
In the vehicle-mounted hydrogen production device, the controller is connected with the power supply to supply power to the power supply;
the controller is connected with the fuel pump to realize control of the fuel pump;
the controller is connected with the heating rod, and the heating rod is used for heating the hydrogen production reactor;
the controller is connected with a thermocouple arranged in the hydrogen production reaction, and the thermocouple is used for monitoring the temperature inside the hydrogen production reactor and feeding back the temperature to the controller in real time so as to keep the temperature inside the hydrogen production reactor to be a certain temperature all the time.
In the above vehicle-mounted hydrogen production apparatus, the fuel inlet and the vaporized fuel outlet are respectively disposed at two ends of the fuel vaporization passage, and the flow direction of the fuel in the fuel vaporization passage is opposite to the running direction of the exhaust gas, so that the methanol and/or ethanol can absorb heat more sufficiently, and the efficiency of vaporizing the methanol and/or ethanol can be improved.
In the above vehicle-mounted hydrogen production device, the fuel vaporization channel is communicated with the bottom of the hydrogen production reactor, and vaporized methanol and/or ethanol is sprayed out from the bottom of the hydrogen production reactor so as to be fully distributed to all corners of the container.
In the above vehicle-mounted hydrogen production device, the hydrogen outlet is arranged at the bottom of the hydrogen production reactor.
The device provided by the utility model utilizes the heat of the automobile exhaust to provide energy for reforming the methanol and/or the ethanol, and the methanol and/or the ethanol react to generate hydrogen under the action of the catalyst. The hydrogen generated by the device can be stored, and can also be sprayed into the cylinder body of the engine through the spraying device for combustion of the engine, so that the combustion characteristic of the engine is improved; meanwhile, the cold start problem of the ethanol engine can be solved by adding the hydrogen, so that the methanol and/or ethanol engine can be started under the condition of low temperature. Besides, the hydrogen-doped combustion of the engine can obviously improve the emission of the engine, reduce the oil consumption and improve the heat efficiency.
Drawings
FIG. 1 is a schematic structural diagram of an on-board methanol and/or ethanol hydrogen production device based on engine exhaust preheating.
Fig. 2 is a schematic structural diagram of a hydrogen production reactor in the hydrogen production apparatus of the present invention.
The respective symbols in the figure are as follows:
the system comprises a controller 1, a power supply 2, a heating rod 3, a thermocouple 4, a hydrogen production reactor 5, a catalyst 6, a fuel tank 7, a fuel pump 8, an overflow valve 9, a pressure regulating valve 10, a filter 11, a check valve I12, a fuel vaporization channel 13, tail gas 14, a temperature pressure sensor 15, a hydrogen outlet 16, a check valve II 17, a cooler 18, a gas-water separator 19 and an engine 20.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the schematic diagram of the on-board hydrogen production device based on engine exhaust preheating for methanol and/or ethanol of the present invention includes a fuel tank 7, a fuel vaporization passage 13, and a hydrogen production reactor 5. The fuel inlet and the vaporized fuel outlet of the fuel vaporization passage 13 are connected to the fuel tank 7 and the hydrogen production reactor 13, respectively. An overflow valve 9, a pressure regulating valve 10, a filter 11 and a one-way valve I12 are sequentially arranged on a communication pipeline of the fuel vaporization channel 13 and the fuel tank 7, the overflow valve 9 is used for keeping the system pressure stable, redundant methanol and/or ethanol flows back to the fuel tank 7, the pressure regulating valve 10 is used for regulating the system pressure, and impurities in the methanol and/or ethanol are filtered out through the filter 11. A fuel pump 8 is arranged in the fuel tank 7, the fuel pump 8 is connected with an overflow valve 9, and methanol and/or ethanol are conveyed through the fuel pump 8. The fuel vaporization passage 13 is disposed in an exhaust pipe of the engine, and the flow direction of methanol and/or ethanol is opposite to the running direction of the exhaust gas 14, so that the methanol and/or ethanol can absorb heat more sufficiently, and the efficiency of ethanol vaporization is improved. A temperature and pressure sensor 15 is arranged on a pipeline for communicating the fuel vaporization passage 13 with the hydrogen production reactor 5, and is used for monitoring the temperature and the pressure of the vaporized methanol and/or ethanol.
As shown in fig. 2, a catalyst 6 for catalyzing fuel to produce hydrogen, a heating rod 3 and a thermocouple 4 are loaded in the hydrogen production reactor 5, and the heating rod 3 is used for heating the hydrogen production reactor 5. The fuel vaporization passage 13 communicates with the bottom of the hydrogen production reactor 5, and vaporized methanol and/or ethanol is ejected from the bottom of the hydrogen production reactor 5 so as to be sufficiently distributed to the corners of the vessel. The bottom of the hydrogen production reactor 5 is provided with a hydrogen outlet 16, the hydrogen outlet 16 is connected with a hydrogen output pipeline, and the hydrogen output pipeline is sequentially provided with a cooler 18, a gas-water separator 19, a one-way valve II 17 and an engine 20.
In the hydrogen production device, the controller 1 is connected with the power supply 2(12V) to supply power for the hydrogen production device. The controller 1 is respectively connected with the fuel pump 8, the temperature and pressure sensor 15, the heating rod 3 and the thermocouple 4 so as to control the fuel pump 8, monitor the temperature and the pressure of the vaporized methanol and/or ethanol and receive the temperature fed back by the thermocouple 4, thereby keeping the interior of the hydrogen production reactor 5 at a certain temperature all the time.
The hydrogen production device of the utility model has the following working process, taking ethanol as fuel as an example:
when hydrogen needs to be prepared, the controller 1 controls the temperature inside the hydrogen production reactor 5 within a proper range, the controller 1 controls the fuel pump 8 to be started at the moment, ethanol is sucked out from the fuel tank 7 and injected into the fuel vaporization channel 13, the tail gas 14 provides energy for ethanol vaporization, the overflow valve 9 is used for keeping the system pressure stable, redundant ethanol flows back to the fuel tank 7, the pressure regulating valve 10 is used for regulating the system pressure, the filter 11 is used for filtering impurities, the check valve I12 is used for preventing vaporized ethanol from flowing back, and the temperature and pressure sensor 15 monitors the temperature and the pressure of the vaporized ethanol. The vaporized ethanol then enters the interior of the hydrogen production reactor 5 and is ejected from the far (bottom) end of the hydrogen production reactor so that it can be distributed throughout the corners of the vessel. At the moment, the ethanol generates a chemical reaction inside the hydrogen production reactor 5, and a mixed gas rich in hydrogen is obtained under the action of the catalyst 6. The hydrogen-rich mixed gas is discharged from a hydrogen outlet 16 and flows to a cooler 18, the cooled gas passes through a gas-water separator 19 to obtain dry hydrogen, and the dry hydrogen enters an engine 20 to participate in combustion after passing through a one-way valve II 17.
The hydrogen production device utilizes the heat of the automobile exhaust to provide energy for reforming the methanol and/or the ethanol, the methanol and/or the ethanol react to generate hydrogen under the action of the catalyst, the generated hydrogen can be stored, and the hydrogen can be sprayed into the cylinder body of the engine through the spraying device to be combusted and used by the methanol and/or the ethanol engine, so that the combustion characteristic of the engine is improved. Meanwhile, the cold start problem of the methanol and/or ethanol engine can be solved by adding the hydrogen, so that the methanol and/or ethanol engine can be started under the condition of low temperature. Besides, the hydrogen-doped combustion of the engine can obviously improve the emission of the engine, reduce the oil consumption and improve the heat efficiency.
Claims (9)
1. A vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating comprises a fuel tank, a fuel vaporization channel and a hydrogen production reactor; the method is characterized in that:
a fuel inlet and a vaporized fuel outlet of the fuel vaporization channel are respectively connected with the fuel tank and the hydrogen production reactor;
a one-way valve I is arranged on a communication pipeline between the fuel vaporization channel and the fuel tank;
the fuel vaporization channel is arranged in an exhaust pipe of the engine;
a catalyst for catalyzing fuel to produce hydrogen is loaded in the hydrogen production reactor;
a heating rod is arranged in the hydrogen production reactor;
a hydrogen outlet is formed in the hydrogen production reactor and is connected with a hydrogen output pipeline, a cooler, a gas-water separator and a check valve II are arranged on the hydrogen output pipeline, and the other end of the hydrogen output pipeline is connected with a hydrogen storage device or an engine;
the fuel tank is a methanol fuel tank, an ethanol fuel tank or a methanol-ethanol mixed fuel tank.
2. The on-board methanol and/or ethanol hydrogen production plant of claim 1, characterized in that: the fuel vaporization passage and the communicating pipeline of the fuel tank are also provided with a filter, and the filter is arranged at the inlet of the one-way valve I.
3. The on-board methanol and/or ethanol hydrogen production plant of claim 2, characterized in that: and an overflow valve and a pressure regulating valve are sequentially arranged on a communicating pipeline of the fuel vaporization channel and the fuel tank, and the pressure regulating valve is arranged at an inlet of the filter.
4. The on-board methanol and/or ethanol hydrogen production plant of claim 3, characterized in that: and a fuel pump is arranged in the fuel tank and is connected with the overflow valve.
5. The on-board methanol and/or ethanol hydrogen plant of any one of claims 1-4, characterized in that: a temperature and pressure sensor is arranged on a communicating pipeline between the fuel vaporization channel and the hydrogen production reactor;
the temperature and pressure sensor is connected with the controller.
6. The on-board methanol and/or ethanol hydrogen production plant of claim 5, characterized in that: the controller is connected with a power supply;
the controller is connected with the fuel pump;
the controller is connected with the heating rod;
the controller is connected with a thermocouple arranged in the hydrogen production reaction.
7. The on-board methanol and/or ethanol hydrogen plant of any one of claims 1-4, characterized in that: the fuel inlet and the vaporized fuel outlet are respectively arranged at two ends of the fuel vaporization channel, and the flowing direction of the fuel in the fuel vaporization channel is opposite to the running direction of the tail gas.
8. The on-board methanol and/or ethanol hydrogen plant of any one of claims 1-4, characterized in that: the fuel vaporization passage is communicated with the bottom of the hydrogen production reactor.
9. The on-board methanol and/or ethanol hydrogen plant of any one of claims 1-4, characterized in that: the hydrogen outlet is arranged at the bottom of the hydrogen production reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120758805.8U CN215566299U (en) | 2021-04-14 | 2021-04-14 | Vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120758805.8U CN215566299U (en) | 2021-04-14 | 2021-04-14 | Vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215566299U true CN215566299U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120758805.8U Active CN215566299U (en) | 2021-04-14 | 2021-04-14 | Vehicle-mounted methanol and/or ethanol hydrogen production device based on engine tail gas preheating |
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|---|---|
| CN (1) | CN215566299U (en) |
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2021
- 2021-04-14 CN CN202120758805.8U patent/CN215566299U/en active Active
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