CN111305947A - Methanol and hydrogen dual-fuel power system - Google Patents
Methanol and hydrogen dual-fuel power system Download PDFInfo
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- CN111305947A CN111305947A CN202010250018.2A CN202010250018A CN111305947A CN 111305947 A CN111305947 A CN 111305947A CN 202010250018 A CN202010250018 A CN 202010250018A CN 111305947 A CN111305947 A CN 111305947A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
- F02B69/02—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
- F02B69/04—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel for gaseous and non-gaseous fuels
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
- C01B2203/0822—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel the fuel containing hydrogen
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1223—Methanol
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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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
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
A methanol and hydrogen dual-fuel power system. The thermal efficiency of gasoline and diesel engines is only 20-45%, and the waste heat of tail gas is discharged into the atmosphere and not effectively utilized, thereby causing energy waste. The invention comprises the following components: engine (20), hydrogen plant (5), methyl alcohol case (1) and cold start electrical heating hydrogen plant (8), methyl alcohol case passes through pipeline and methyl alcohol injection rail (16) on the engine intake manifold, cold start electrical heating hydrogen plant's methyl alcohol entry and hydrogen plant methyl alcohol inlet tube intercommunication, hydrogen plant methyl alcohol inlet tube inserts on the hydrogen plant of engine blast pipe (22), cold start electrical heating hydrogen plant's gas outlet pipeline passes through electromagnetism tee bend check valve (9) one end and hydrogen plant's gas inlet intercommunication, the other end and gas cooling, gas-liquid separation device (10) intercommunication, gas cooling, gas-liquid separation device's methyl alcohol export and methyl alcohol case pass through the pipeline intercommunication. The invention is used for a methanol and hydrogen dual-fuel power system.
Description
The technical field is as follows:
the invention relates to a methanol and hydrogen dual-fuel power system.
Background art:
with the development of social economy, the automobile holding capacity is increased year by year, the automobile energy consumption accounts for higher and higher world energy consumption, the contradiction between energy supply and demand is increasingly prominent, the serious problem of environmental pollution is caused, and energy conservation and emission reduction become one of the topics concerned by various countries. Therefore, the development of a novel energy clean fuel power system has important significance for relieving the world energy crisis and reducing the environmental pollution. Methanol and hydrogen fuels are widely available, for example: preparing methanol from coal, preparing methanol from natural gas, preparing methanol from carbon dioxide and the like; electrolyzing water to prepare hydrogen, cracking or reforming methanol to prepare hydrogen, extracting hydrogen from coke oven gas, etc. The methanol and the hydrogen have the advantages of renewability, clean and pollution-free combustion products and high emission level.
Only about one third of the energy generated by combustion of the engine power system is effectively utilized, and the rest energy is dissipated to the air in the form of heat, so that energy waste is caused, and therefore if the part of energy can be effectively utilized, the comprehensive efficiency of the engine power system is improved, and more energy can be saved.
At present, the domestic power system is basically a gasoline engine or a diesel engine, the heat efficiency can only reach 20-45%, and the waste heat of tail gas is basically discharged into the atmosphere and is not effectively utilized, so that the energy waste is caused.
The combustion tail gas of gasoline and diesel engines contains harmful substances such as hydrocarbon, sulfide and nitrogen oxide, which causes environmental pollution.
The ignition range of the gasoline fuel is relatively narrow, the lean combustion condition is difficult to achieve, the emission level of an engine is not favorably improved, the fuel consumption rate is reduced, the vaporization potential heat value of the methanol fuel is relatively high, so that the cold start of the methanol single-fuel engine is difficult, and the application of the methanol single-fuel engine in cold regions in winter is limited.
The invention content is as follows:
the invention aims to provide a device for producing hydrogen-rich gas by cracking methanol by using waste heat of tail gas of an engine, wherein the hydrogen-rich gas mainly comprises hydrogen and carbon monoxide, and the methanol, the hydrogen-rich gas and a mixed gas of air enter an engine cylinder for combustion, so that the combustion effect is good. Meanwhile, the waste heat is effectively utilized, and high-quality fuel is adopted, so that the heat efficiency of the power system is greatly improved.
The above purpose is realized by the following technical scheme:
a methanol and hydrogen dual-fuel power system comprises an engine, a hydrogen production device, a methanol tank and a cold-start electric heating hydrogen production device;
the methanol tank is communicated with a methanol injection rail on an engine intake manifold, a methanol inlet of the cold-starting electric heating hydrogen production device and a methanol inlet pipe of the hydrogen production device through pipelines, the methanol inlet pipe of the hydrogen production device is connected to the hydrogen production device of the engine exhaust pipe, an air outlet pipeline of the cold-starting electric heating hydrogen production device is communicated with a gas inlet of the hydrogen production device through one end of an electromagnetic three-way check valve, the other end of the electromagnetic three-way check valve is communicated with a gas cooling and gas-liquid separation device, a methanol outlet of the gas cooling and gas-liquid separation device is communicated with the methanol tank through a pipeline, and a gas outlet is communicated with the hydrogen injection rail on the engine intake manifold through a pipeline.
The methanol and hydrogen dual-fuel power system is characterized in that the gas cooling and gas-liquid separating device comprises a radiating fin, a loop heat pipe, a heat pipe evaporation cavity, a gas inlet, a liquid discharging port and a gas outlet, the loop heat pipe is communicated with the heat pipe evaporation cavity, the radiating fin is arranged on the loop heat pipe, the gas inlet and the gas outlet are distributed on two sides of the gas cooling and gas-liquid separating device, and the liquid discharging port is arranged on the lower portion of the gas cooling and gas-liquid separating device.
The methanol and hydrogen dual-fuel power system is characterized in that the cold-start electric heating hydrogen production device comprises a methanol inlet, a plurality of PTC thermistors, a hydrogen production catalyst and a gas outlet, a plurality of parallel PTC thermistors are fixed inside the cold-start electric heating hydrogen production device, a methanol steam channel is formed among the plurality of PTC thermistors, and the hydrogen production catalyst is filled in the alcohol steam channel.
The methanol and hydrogen dual-fuel power system is characterized in that a temperature sensor is arranged at the top of the cold-start electric heating hydrogen production device.
The methanol and hydrogen dual-fuel power system is characterized in that an exhaust branch pipe is arranged on an exhaust pipe of the engine, and a silencer is mounted at the tail of the exhaust pipe.
The methanol and hydrogen dual-fuel power system is characterized in that a methanol inlet pipe of the hydrogen production device is in a spiral pipe shape.
The methanol and hydrogen dual-fuel power system is characterized in that a methanol pump is arranged on a pipeline of the methanol tank and a methanol injection rail communicated with the engine intake manifold.
The methanol and hydrogen dual-fuel power system is characterized in that a methanol variable pump is arranged on a pipeline communicated with a methanol inlet pipe of the hydrogen production device and the methanol tank.
Has the advantages that:
1. the invention utilizes the waste heat of the tail gas of the engine, adopts the methanol cracking hydrogen production device to produce hydrogen-rich gas, the main components of the hydrogen-rich gas are hydrogen and carbon monoxide, the methanol and the mixed gas of the hydrogen-rich gas and air enter the cylinder of the engine to be combusted, and the combustion effect is good. Meanwhile, the waste heat is effectively utilized, and high-quality fuel is adopted, so that the heat efficiency of the power system is greatly improved.
The methanol fuel is mixed with hydrogen for combustion, and the low-temperature combustion characteristic of the methanol can be improved by utilizing the characteristics of low ignition energy and high flame propagation speed of the hydrogen.
The combustible range of the methanol and the hydrogen is wide, and compared with a gasoline engine, the methanol and hydrogen dual-fuel engine can operate under the condition of a thinner gas mixture, so that the emission level of the engine can be improved, and the fuel consumption rate can be reduced.
The combustion products of the methanol and hydrogen fuel of the invention are basically carbon dioxide and water, and the emission level of the engine is high.
The hydrogen is from a methanol cracking hydrogen production device, and the device utilizes the heat of the tail gas of the engine to enable methanol to react under the action of the catalyst to generate hydrogen-rich gas, thereby effectively utilizing the waste heat of the engine and improving the energy utilization rate. The hydrogen production raw material methanol has wide source and low cost, belongs to clean novel energy, and the reaction product has no pollution.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the gas cooling, gas-liquid separating apparatus;
FIG. 3 is a front view of the gas cooling, gas-liquid separating apparatus;
FIG. 4 is a schematic diagram of a cold start electrically heated hydrogen plant;
in the figure: 1. a methanol tank; 2. a methanol pump; 3. a methanol variable pump; 4. an electromagnetic valve; 5. A hydrogen production unit; 6. a muffler; 8. Cold starting the electrical heating hydrogen production device; 9. an electromagnetic three-way check valve; 10. a gas cooling and gas-liquid separating device; 11. a gas filter; 12. a pressure temperature sensor; 13. an electric heating device; 14. a temperature sensor; 15. a high temperature solenoid valve; 16. spraying methanol on a rail; 17. a methanol nozzle; 18. hydrogen gas injection rail; 19. a hydrogen gas nozzle; 20. an engine; 21. a control unit; 22. an exhaust pipe; 23. an exhaust branch pipe; 24. a heat sink; 25. a loop heat pipe; 26. a heat pipe evaporation cavity; 27. a gas inlet; 28. a liquid discharge port; 29. a gas outlet; 30. a methanol inlet; 31. a PTC thermistor; 32. a temperature sensor; 33. a hydrogen production catalyst; 34. a methanol vapor channel; 35. a wire; 36. and a gas outlet.
The specific implementation mode is as follows:
example 1:
a methanol and hydrogen dual-fuel power system comprises an engine 20, a hydrogen production device 5, a methanol tank 1 and a cold-start electric heating hydrogen production device 8;
the methanol tank is communicated with the methanol injection rail 16 on the engine intake manifold, the methanol inlet of the cold-starting electric heating hydrogen production device and the methanol inlet pipe of the hydrogen production device through pipelines, the methanol inlet pipe of the hydrogen production device is connected to the hydrogen production device of the engine exhaust pipe 22, the gas outlet pipeline of the cold-starting electric heating hydrogen production device is communicated with the gas inlet of the hydrogen production device through one end of an electromagnetic three-way check valve 9, the other end of the electromagnetic three-way check valve is communicated with the gas cooling and gas-liquid separation device 10, the methanol outlet of the gas cooling and gas-liquid separation device is communicated with the methanol tank through a pipeline, and the gas outlet is communicated with the hydrogen injection rail 18 on the engine intake manifold through a pipeline.
Example 2:
according to the methanol and hydrogen dual-fuel power system of embodiment 1, the gas cooling and gas-liquid separating device comprises a cooling fin 24, a loop heat pipe 25, a heat pipe evaporation cavity 26, a gas inlet 27, a liquid discharge port 28 and a gas outlet 29, the loop heat pipe is communicated with the heat pipe evaporation cavity, the cooling fin is arranged on the loop heat pipe, the gas inlet and the gas outlet are distributed on two sides of the gas cooling and gas-liquid separating device, and the liquid discharge port is arranged on the lower portion of the gas cooling and gas-liquid separating device.
Example 3:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1 or 2, the cold-start electrical heating hydrogen production device comprises a methanol inlet 30, a plurality of PTC thermistors 31, a hydrogen production catalyst 33 and a gas outlet 36, wherein the plurality of PTC thermistors which are arranged in parallel are fixed inside the cold-start electrical heating hydrogen production device, a methanol steam channel is formed among the plurality of PTC thermistors, and the hydrogen production catalyst is filled in the alcohol steam channel.
Example 4:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1, 2 or 3, the temperature sensor 32 is installed on the top of the cold-start electric heating hydrogen production device.
Example 5:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1, 2, 3 or 4, the exhaust pipe of the engine is provided with the exhaust branch pipe 23, and the tail part of the exhaust pipe is provided with the silencer 6.
Example 6:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1, 2, 3, 4 or 5, the methanol inlet pipe of the hydrogen production device is in a spiral pipe shape.
Example 7:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1, 2, 3, 4, 5 or 6, the methanol tank and the pipeline communicated with the methanol injection rail on the engine intake manifold are provided with methanol pumps.
Example 8:
according to the methanol and hydrogen dual-fuel power system of the embodiment 1, 2, 3, 4, 5, 6 or 7, a methanol variable pump is installed on a pipeline of the methanol tank communicated with the methanol inlet pipe of the hydrogen production device.
The engine is a methanol and hydrogen dual-fuel ignition type electronic injection engine, a methanol injection rail 16 and a hydrogen injection rail 18 are respectively arranged on an air inlet manifold of the engine, a methanol nozzle 17 and a hydrogen nozzle 19 are respectively arranged on the two injection rails, and the nozzles are used for controlling the opening time and the opening duration of an electromagnetic valve of the nozzle through a control unit 21 so as to accurately control the injection quantity of the methanol and the hydrogen.
The engine 20 is connected with an exhaust pipe 22, and a hydrogen production device 5, a high-temperature electromagnetic valve 15 and a silencer 6 are arranged in the exhaust pipe; an exhaust branch pipe 23. The high-temperature electromagnetic valve 15 is used for closing the electromagnetic valve when the temperature in the hydrogen production device 5 exceeds the reaction requirement, discharging the high-temperature tail gas of the engine from the exhaust branch pipe 23 and keeping the working temperature range of the hydrogen production device.
The outer surface of the hydrogen production device 5 is wrapped by a heat insulation layer, so that heat dissipation and heat radiation to other parts are reduced, a plurality of parallel exhaust channels are arranged in the hydrogen production device, the sectional areas of all the exhaust channels are the same as that of the exhaust pipe, and the exhaust back pressure value of the engine is guaranteed to be unchanged. The outside of each exhaust channel is a methanol steam channel, and a methanol cracking reaction catalyst is filled in the methanol steam channel. The methanol inlet pipe of the hydrogen production device 5 is in a spiral pipe shape, so that the contact area of methanol and high-temperature tail gas is increased, and the evaporation effect of the methanol is enhanced. The inner wall of the outer shell of the hydrogen production device 5 is provided with a temperature sensor probe channel, and the temperature sensor 14 is fixed to monitor the temperature of the hydrogen production device 5 at any time and feed back to the control unit 21. The inner wall of the outer shell of the hydrogen production device 5 is provided with an electric heating device, when the temperature in the hydrogen production device 5 does not meet the requirement, the electric heating device is started to heat the device, and the working temperature range of the hydrogen production device is kept.
This scheme uses methyl alcohol case 1, provides engine fuel methyl alcohol through methyl alcohol pump 2, provides hydrogen manufacturing raw materials methyl alcohol through methyl alcohol variable pump 3. The methanol variable pump 3 keeps the pressure of the supplied methanol unchanged, and the control unit 21 controls the supply flow of the hydrogen production raw material methanol; the single alcohol tank saves layout space and cost.
This scheme sets up cold start electrical heating hydrogen plant 8 for coping with methyl alcohol cold start, and when the lower start of temperature, solenoid valve 4 closed, solenoid valve 7 opened, and methyl alcohol raw materials passes through cold start electrical heating hydrogen plant 8, and the hydrogen-rich gas that produces is mixed with methyl alcohol and burns when being used for cold start, because hydrogen ignition range is wide, and the ignition energy is low, and flame propagation speed is fast, can improve methyl alcohol low temperature combustion characteristic, solves the cold start difficult problem. After the engine 20 normally runs, the electromagnetic valve 7 is closed, the cold-start electric heating hydrogen production device 8 stops working, the electromagnetic valve 4 is opened, and the hydrogen production device 5 normally works. The control unit 21 respectively controls the electromagnetic valve 4, the electromagnetic valve 7 and the cold-start electric heating hydrogen production device 8.
Hydrogen-rich gas generated by the hydrogen production device 5 and the cold-start electric heating hydrogen production device 8 respectively passes through the electromagnetic three-way check valve 9, so that high-temperature gas generated by each device is prevented from flowing back, and the failure of a hydrogen production catalyst caused by low-temperature liquefaction in the device is avoided. The high-temperature gas passes through the gas cooling and gas-liquid separation device 10, the gas temperature is reduced, and the possible extremely small amount of methanol steam is separated, so that the high-temperature gas is changed into normal-temperature high-concentration hydrogen after being cooled and separated, and the gas inlet efficiency of the engine is ensured; the separated very small amount of methanol liquid flows back to the methanol tank 1. The hydrogen passes through the gas filter 11 and enters the hydrogen injection rail 18, and the control unit 21 opens the hydrogen injection nozzle 19 according to the working condition of the engine to control the hydrogen injection amount. The hydrogen supply pipeline is provided with a temperature pressure sensor 12 for monitoring the hydrogen supply pressure in real time and feeding back to the control unit 21.
Fig. two and fig. three are structural diagrams of the gas cooling and gas-liquid separation device 10 in the overall scheme, and mainly comprise a cooling fin 24, a loop heat pipe 25, a heat pipe evaporation cavity 26, a gas inlet 27, a liquid outlet 28 and a gas outlet 29. The loop heat pipe is communicated with the heat pipe evaporation cavity, the heat pipe is provided with a radiating fin, the gas channel exchanges heat with the heat pipe evaporation cavity through the pipe wall, the gas inlet and the gas outlet are distributed on two sides of the device, and the liquid discharge port is arranged on the lower portion of the device. The integrated heat pipe cooling device is characterized in that high-temperature gas generated by a hydrogen production device enters through a gas inlet 27 and exchanges heat with a cooling medium in a heat pipe evaporation cavity 26, the cooling medium evaporates through a cooling fin 24 and returns to the heat pipe evaporation cavity 26 through a loop heat pipe 25 after being cooled and liquefied to continuously exchange heat. After the high-temperature gas passes through the device, a small part of incompletely reacted methanol vapor is liquefied and left at the lower part of the device, and is returned to the methanol tank by opening a control liquid outlet 28; the cooled gas is discharged from the gas outlet 29. The device does not need external energy for cooling, and can efficiently reduce the gas temperature.
As shown in the figure, the four is a structural diagram of the cold start electric heating hydrogen production device 8 in the whole scheme, and mainly comprises a methanol inlet 30, a PTC thermistor 31, a temperature sensor 32, a hydrogen production catalyst 33, a methanol steam channel 34, a lead 35, a gas outlet 36, an internal PTC thermistor and the methanol steam channel which are arranged in parallel, wherein the catalyst is arranged in the methanol steam channel, and a spray opening is arranged at the methanol inlet, so that the methanol can be atomized and can be uniformly heated to be converted into methanol steam. When the engine is in cold start, methanol is sprayed from the methanol inlet 30, sprayed methanol is heated by the PTC thermistor 31 to become methanol steam, the methanol steam enters the methanol steam channel 34, the PTC thermistor 31 is electrified and heated by the lead 35 to provide the methanol cracking reaction temperature, hydrogen-rich gas is prepared under the action of the hydrogen production catalyst 33, and then the methanol steam is discharged from the gas outlet 36. The device has the advantages of small volume, compact structure and simple control, and can meet the requirement of hydrogen when the engine is started in a cold state.
A control unit 21 of the power system contains a set of calibration data of methanol and hydrogen mixed combustion, the calibration data is fed back to the control unit 21 through data of various working conditions of an engine 20, signals output by the control unit 21 control the methanol fuel supply quantity, the hydrogen supply quantity, the engine air inflow and the hydrogen production raw material methanol supply quantity, and auxiliary elements are controlled to keep the temperature of the hydrogen production device, prepare the hydrogen-rich gas quantity, control the hydrogen-rich gas component and the like.
Claims (8)
1. A methanol and hydrogen dual-fuel power system is characterized in that: the methanol and hydrogen dual-fuel power system comprises an engine, a hydrogen production device, a methanol tank and a cold-start electric heating hydrogen production device;
the methanol tank is communicated with a methanol injection rail on an engine intake manifold, a methanol inlet of the cold-starting electric heating hydrogen production device and a methanol inlet pipe of the hydrogen production device through pipelines, the methanol inlet pipe of the hydrogen production device is connected to the hydrogen production device of the engine exhaust pipe, an air outlet pipeline of the cold-starting electric heating hydrogen production device is communicated with a gas inlet of the hydrogen production device through one end of an electromagnetic three-way check valve, the other end of the electromagnetic three-way check valve is communicated with a gas cooling and gas-liquid separation device, a methanol outlet of the gas cooling and gas-liquid separation device is communicated with the methanol tank through a pipeline, and a gas outlet is communicated with the hydrogen injection rail on the engine intake manifold through a pipeline.
2. The methanol and hydrogen dual fuel power system as claimed in claim 1, wherein: the gas cooling and gas-liquid separating device comprises a radiating fin, a loop heat pipe, a heat pipe evaporation cavity, a gas inlet, a liquid discharging port and a gas outlet, wherein the loop heat pipe is communicated with the heat pipe evaporation cavity, the radiating fin is arranged on the loop heat pipe, the gas inlet and the gas outlet are distributed on two sides of the gas cooling and gas-liquid separating device, and the liquid discharging port is arranged on the lower portion of the gas cooling and gas-liquid separating device.
3. The methanol and hydrogen dual fuel power system as claimed in claim 2, wherein: the cold-start electric heating hydrogen production device comprises a methanol inlet, a plurality of PTC thermistors, a hydrogen production catalyst and a gas outlet, wherein the plurality of PTC thermistors which are arranged in parallel are fixed inside the cold-start electric heating hydrogen production device, a methanol steam channel is formed among the plurality of PTC thermistors, and the hydrogen production catalyst is filled in the alcohol steam channel.
4. A methanol and hydrogen dual fuel power system as claimed in claim 3, wherein: the top of the cold-starting electric heating hydrogen production device is provided with a temperature sensor.
5. A methanol and hydrogen dual fuel power system as claimed in claim 3, wherein: the exhaust pipe of the engine is provided with an exhaust branch pipe, and the tail part of the exhaust pipe is provided with a silencer.
6. A methanol and hydrogen dual fuel power system as claimed in claim 3, wherein: the methanol inlet pipe of the hydrogen production device is in a spiral pipe shape.
7. A methanol and hydrogen dual fuel power system as claimed in claim 3, wherein: and a methanol pump is arranged on a pipeline which is communicated with the methanol injection rail on the engine intake manifold.
8. A methanol and hydrogen dual fuel power system as claimed in claim 3, wherein: and a methanol variable pump is arranged on a pipeline communicated with the methanol inlet pipe of the hydrogen production device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010250018.2A CN111305947A (en) | 2020-04-01 | 2020-04-01 | Methanol and hydrogen dual-fuel power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010250018.2A CN111305947A (en) | 2020-04-01 | 2020-04-01 | Methanol and hydrogen dual-fuel power system |
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| CN111305947A true CN111305947A (en) | 2020-06-19 |
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| CN202010250018.2A Pending CN111305947A (en) | 2020-04-01 | 2020-04-01 | Methanol and hydrogen dual-fuel power system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263530A (en) * | 2021-12-30 | 2022-04-01 | 重庆望江摩托车制造有限公司 | New energy motorcycle mixing fuel oil and hydrogen |
| CN114687873A (en) * | 2022-04-11 | 2022-07-01 | 浙江吉利控股集团有限公司 | Fuel supply method, device and system for methanol engine |
| CN116398310A (en) * | 2023-06-09 | 2023-07-07 | 潍柴动力股份有限公司 | Method and device for starting methanol engine, storage medium and equipment |
-
2020
- 2020-04-01 CN CN202010250018.2A patent/CN111305947A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263530A (en) * | 2021-12-30 | 2022-04-01 | 重庆望江摩托车制造有限公司 | New energy motorcycle mixing fuel oil and hydrogen |
| CN114263530B (en) * | 2021-12-30 | 2022-09-27 | 重庆望江摩托车制造有限公司 | New energy motorcycle mixing fuel oil and hydrogen |
| CN114687873A (en) * | 2022-04-11 | 2022-07-01 | 浙江吉利控股集团有限公司 | Fuel supply method, device and system for methanol engine |
| CN116398310A (en) * | 2023-06-09 | 2023-07-07 | 潍柴动力股份有限公司 | Method and device for starting methanol engine, storage medium and equipment |
| CN116398310B (en) * | 2023-06-09 | 2023-08-18 | 潍柴动力股份有限公司 | Method and device for starting methanol engine, storage medium and equipment |
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