CN115111055A - Organic liquid dehydrogenation and hydrogen internal combustion engine coupling system - Google Patents
Organic liquid dehydrogenation and hydrogen internal combustion engine coupling system Download PDFInfo
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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
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
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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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
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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
The invention discloses an organic liquid dehydrogenation and hydrogen internal combustion engine coupling system, which comprises: the device comprises a dehydrogenation reaction unit, an integrated heat exchange unit, a hydrogen internal combustion engine, a motor and a lithium battery; the dehydrogenation reaction unit carries out dehydrogenation reaction on the liquid hydrogen oil to generate hydrogen, the hydrogen is conveyed to a hydrogen internal combustion engine to serve as hydrogen fuel, and the waste heat of the tail gas of the hydrogen internal combustion engine transfers heat to the dehydrogenation reaction unit through the integrated heat exchange unit; the hydrogen internal combustion engine, the motor and the lithium battery are combined to form a hybrid power output end to provide power output for the outside. The system has high comprehensive energy efficiency, has low requirement on hydrogen purity and high output power of the hydrogen-oil internal combustion engine, and can be conveniently used for various application occasions such as heavy trucks, high-speed trains, large ships, missile launching vehicles and the like by adopting hybrid power output.
Description
Technical Field
The invention belongs to the field of hydrogen energy, and particularly relates to a coupling system of organic liquid dehydrogenation and a hydrogen internal combustion engine.
Background
Hydrogen energy utilization technologies, such as hydrogen fuel cells and hydrogen internal combustion engines, can provide stable, efficient and pollution-free power, and have wide application prospects in the fields of electric automobiles, mobile devices and the like. In recent 10 years, developed countries such as the United states, Europe, Japan, and the like, and government departments and enterprises in China invest a large amount of capital to develop the hydrogen energy economy, and the hydrogen energy economy has a breakthrough in the fields of large-scale hydrogen preparation, hydrogen fuel cells, and the like. In 2015, major automobile manufacturers (including gasoline) in the world will mass produce hydrogen fuel cell vehicles. According to the prediction of the United states department of energy and the United states industry, the hydrogen fuel cell vehicle will replace the existing fuel vehicle and hybrid vehicle within 15 years to 20 years, and is dominant in the global automobile market. In addition, the hydrogen energy technology can also be used in the fields of standby power supply, energy storage, peak clipping and valley filling type grid-connected power generation, distributed energy supply, combustion supporting, environmental protection and the like. It is expected that the energy crisis and environmental stress of the country will be greatly relieved after the hydrogen energy technology rapidly completes the marketization process and merges into the lives of people.
The hydrogen energy technology comprises links of scale preparation, storage and transportation, high-efficiency use, construction of matched infrastructure and the like of hydrogen, wherein the storage and transportation are one of the most key technologies for safely and effectively utilizing the hydrogen energy. At present, the industry mainly adopts storage and transportation technologies such as liquefied hydrogen at the temperature of 253 ℃ below zero or high-pressure hydrogen under the atmospheric pressure of 350-700, the energy consumption required by the high-pressure hydrogen or liquefied hydrogen technology and the application thereof is more than 20 times of the hydrogen production cost, and potential safety hazards such as leakage or over-high pressure of a hydrogen storage tank exist. If hydrogen molecules can be adsorbed on a carrier, the hydrogen can be safely stored at normal temperature and normal pressure, and when the hydrogen is used, the hydrogen can be controllably released under a mild condition, so that the hydrogen energy can be effectively and safely used. Therefore, major industrial countries around the world are developing liquid organic hydrogen storage technologies based on normal temperature and pressure. Taking Germany as an example, the developed liquid organic hydrogen storage technology can realize hydrogen absorption/desorption circulation under a mild condition, but released hydrogen contains by-product gas which poisons a fuel cell, and has important defects of low capacity, inconvenient use and the like; hydrogen storage technologies based on conventional organic materials such as toluene are currently being developed in japan, but the dehydrogenation temperature is too high (greater than 300 ℃), and there is also a problem that the fuel cell is poisoned by-products. Therefore, the two hydrogen storage technologies are restricted in scale application.
Under the guidance of the second professor of the university of geology (Wuhan) in Wuhan, the second group of professor of Ten thousand plans (Chenhan Song), on the basis of the work of the original United states, through long-term exploration and research, a liquid organic conjugated molecular hydrogen storage material is discovered, and the material has the characteristics of low melting point (the currently developed technology is as low as-20 ℃), high flash point (above 150 ℃), high purity (99.99%) of released gas, low dehydrogenation temperature (about 150 ℃) and the like under the action of a self-made efficient catalyst, and has long cycle life (above 2000 times), strong reversibility and no generation of carbon monoxide and other gases which poison fuel cells. As a carrier of hydrogen, the material exists in a liquid state all the time in the using process, can be stored and transported at normal temperature and normal pressure like petroleum, and can fully utilize the existing gasoline transportation mode and the structure of a gasoline station. The project firstly provides a hydrogen storage and fuel cell or internal combustion engine integrated technology for directly feeding hydrogen released by dehydrogenation of the liquid hydrogen storage material under normal temperature and normal pressure into a fuel cell or internal combustion engine system.
At present, hydrogen internal combustion engines are well developed in technical terms, and the international application of hydrogen fuel to internal combustion engines is mainly based on the following recognition: one is that the internal combustion engine still has great development potential after more than 100 years of development, and the cost of the common hydrogen fuel internal combustion engine is only about 10-15% higher than that of the conventional gasoline engine and is far lower than that of a fuel cell, so that the cost advantage is achieved; secondly, the hydrogen fuel internal combustion engine has various fuel adaptability, not only can use pure hydrogen as fuel, but also can use mixed fuel of hydrogen and natural gas and hydrogen and other fuels, and is an important way for reducing dependence on petroleum at present; thirdly, the hydrogen fuel internal combustion engine has no emission of greenhouse gas carbon dioxide, and no emission of CO, HC, nitrogen oxides and soot; fourthly, the hydrogen fuel internal combustion engine does not need a heat engine, does not have the cold start problem and has better fuel economy. However, the large-scale development of the hydrogen energy industry is restricted by the hydrogen storage and transportation technology, in order to realize that hydrogen can be absorbed only under normal temperature and normal pressure through long-period, large-scale storage and long-distance transportation, the absorption technology fundamentally solves the safety problem of hydrogen, the existing hydrogen absorption technology is mainly based on solid materials and is not matched with the existing infrastructure, and the normal temperature and normal pressure liquid hydrogen storage technology is completely matched with the existing infrastructure, the existing oil refinery and gas station are slightly modified, and the hydrogen storage and transportation technology can be applied to large-scale storage, transportation and filling of hydrogen, so that the cost of large-scale utilization of hydrogen energy is greatly reduced. The combination of the normal temperature and pressure liquid hydrogen storage technology and the hydrogen internal combustion engine technology brings a new solution to the energy power system in the extreme environment.
In addition, the high-temperature tail gas of the traditional internal combustion engine is discharged after being treated, a large amount of heat energy is taken away, the heat loss of the internal combustion engine is considered, the pure power output efficiency of the traditional internal combustion engine is not high and is generally about 30%, and the hydrogen-oil internal combustion engine combined with the hydrogen-oil dehydrogenation system can greatly improve the comprehensive energy utilization efficiency of the whole hydrogen-oil internal combustion engine system by more than 65% due to the fact that the tail gas and the self waste heat of the internal combustion engine can be conveniently and effectively utilized. Therefore, the research and development of the hydrogen-oil internal combustion engine combined with the hydrogen-oil dehydrogenation system not only has great significance on the innovation of energy technology, but also has practical economic value and popularization significance in the field of energy power.
Disclosure of Invention
The invention aims to provide a coupling system of organic liquid dehydrogenation and a hydrogen internal combustion engine aiming at the prior hydrogen internal combustion engine technology, which can effectively improve the heat energy utilization efficiency of the hydrogen internal combustion engine and simultaneously adopts a hybrid power mode to enable a power device to be more efficient.
In order to achieve the purpose, the invention adopts the following technical scheme: an organic liquid dehydrogenation and hydrogen internal combustion engine coupling system is characterized by comprising: the device comprises a dehydrogenation reaction unit, an integrated heat exchange unit, a hydrogen internal combustion engine, a motor and a lithium battery;
the dehydrogenation reaction unit carries out dehydrogenation reaction on the liquid hydrogen oil to generate hydrogen, the hydrogen is conveyed to a hydrogen internal combustion engine to serve as hydrogen fuel, and the waste heat of the tail gas of the hydrogen internal combustion engine transfers heat to the dehydrogenation reaction unit through the integrated heat exchange unit;
the hydrogen internal combustion engine, the motor and the lithium battery are combined to form a hybrid power output end, and power output is provided for the outside.
Further, the dehydrogenation reaction unit includes dehydrogenation reation kettle, hydrogen oil tank and batch oil tank, dehydrogenation reation kettle is used for carrying out the dehydrogenation reaction with liquid hydrogen oil and generates hydrogen and oil storage, and liquid hydrogen oil is stored to the hydrogen oil tank, and the batch oil tank stores the oil storage.
Further, hydrogen generated by the reaction of the dehydrogenation reaction kettle enters the hydrogen internal combustion engine through a booster pump.
Furthermore, the integrated heat exchange unit comprises a double-channel heat exchanger, a hydrogen oil pipeline and an induced draft fan; the double-channel heat exchanger is provided with a hydrogen-oil channel and a heating channel, the two ends of the hydrogen-oil channel are communicated with the two ends of a hydrogen-oil pipeline, so that the hydrogen-oil pipeline forms a closed loop between the dehydrogenation reaction kettle and the double-channel heat exchanger, the hydrogen-oil pipeline is respectively provided with a tee joint and a three-way valve, the tee joint at the inlet side of the hydrogen-oil channel introduces the hydrogen oil of a hydrogen oil tank into the hydrogen-oil channel, the three-way valve at the outlet side of the hydrogen-oil channel inputs the heated hydrogen oil into the dehydrogenation reaction kettle and a hydrogen-oil pipeline in proportion, the hydrogen oil input into the dehydrogenation reaction kettle is used as a raw material for dehydrogenation reaction, and the hydrogen oil input into the hydrogen-oil pipeline is used as a heat-conducting medium to heat the dehydrogenation reaction kettle and then returns to the double-channel heat exchanger; the two ends of the heating channel are provided with an air inlet and an air outlet, tail gas of the hydrogen internal combustion engine enters through the air inlet to be used as a heat source, and the induced draft fan is arranged at the air outlet and used for accelerating the discharge of the tail gas and circulating the low-temperature tail gas to the air inlet, so that the working temperature of the double-channel heat exchanger is reduced.
Furthermore, the integrated heat exchange unit comprises a three-channel heat exchanger, a medium pipeline and an induced draft fan; the three-channel heat exchanger comprises a medium channel, a heating channel and a hydrogen-oil channel, wherein two ends of the medium channel are communicated with two ends of a medium pipeline, so that the medium pipeline forms a closed loop between the dehydrogenation reaction kettle and the two-channel heat exchanger, and the heating medium in the medium channel transfers heat to the dehydrogenation reaction kettle after being heated by the three-channel heat exchanger; the two ends of the heating channel are provided with an air inlet and an air outlet, tail gas of the hydrogen internal combustion engine enters through the air inlet to be used as a heat source, and the induced draft fan is arranged at the air outlet and used for accelerating the exhaust of the tail gas and circulating low-temperature tail gas to the air inlet so as to reduce the working temperature of the three-channel heat exchanger; the inlet end of the hydrogen-oil channel is connected with a hydrogen oil tank, the outlet end of the hydrogen-oil channel is connected with a reaction inlet of the dehydrogenation reaction kettle, and hydrogen oil is heated in the three-channel heat exchanger and then is input into the dehydrogenation reaction kettle for dehydrogenation reaction.
Further, the heat conducting medium is heat conducting oil or water vapor.
Furthermore, the integrated heat exchange unit also comprises a heating furnace, wherein the heating furnace is arranged on the hydrogen oil pipeline in the case of a double-channel heat exchanger, and the heating furnace is arranged on the medium pipeline and positioned between the heat exchanger and the dehydrogenation reaction kettle in the case of a three-channel heat exchanger and is used for supplementing heat to a heating medium or hydrogen oil.
Furthermore, an exhaust port of the heating channel is provided with a temperature sensor.
Further, when the motor is a double motor, the hybrid power output end adopts hydrogen-electricity hybrid power output: when the required power is greater than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine is connected with the double motors in parallel, the double motors are connected with the lithium batteries in series, the lithium batteries provide electric energy for the double motors, and the double motors and the hydrogen internal combustion engine are combined to jointly output power; when the required power is smaller than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine outputs power and simultaneously provides power for the double motors, so that the double motors can be used as a generator to charge the lithium battery.
Further, when the motor is a generator, the hybrid power output end adopts electric-electric hybrid power output: when the required power is greater than the rated power of the generator, the hydrogen internal combustion engine is connected with the generator in series, the generator converts mechanical energy provided by the hydrogen internal combustion engine into electric energy, the generator is connected with the lithium battery in parallel, and the generator and the lithium battery output the electric energy to the outside at the same time; when the required power is smaller than the rated power of the generator, the generator outputs the converted electric energy to the outside and charges the lithium battery at the same time.
The application discloses hydrogen oil internal combustion engine system combines hydrogen oil dehydrogenation system and hydrogen internal combustion engine, compares with traditional driving system, mainly has following beneficial effect:
(1) the invention adopts the normal temperature and pressure liquid hydrogen storage technology, can well solve the problem of long-distance transportation and storage of high-pressure hydrogen and liquid hydrogen, greatly reduces the safety risk of hydrogen utilization, and can conveniently use the existing infrastructure such as gasoline and diesel oil filling stations and the like. The method makes large-scale efficient and safe hydrogen utilization possible in equipment, mobile transportation and fixed power stations.
(2) The system has high comprehensive energy efficiency, has low requirement on hydrogen purity and high output power of the hydrogen-oil internal combustion engine, and can be conveniently used in various application occasions such as heavy trucks, high-speed trains, large ships, missile launching vehicles and the like by adopting hybrid power output.
(3) Compared with the traditional internal combustion engine, the hydrogen-oil internal combustion engine has the emission reaching the European-seventh standard.
Drawings
Fig. 1 is a schematic structural diagram of a coupling system of organic liquid dehydrogenation and a hydrogen internal combustion engine in embodiment 1.
Fig. 2 is a schematic structural diagram of a coupling system of organic liquid dehydrogenation and a hydrogen internal combustion engine in embodiment 2.
FIG. 3 is a schematic diagram of the channels in a three-channel heat exchanger according to example 2.
FIG. 4 is a schematic diagram of an embodiment 3-point electric hybrid output.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The liquid hydrogen storage carrier (namely liquid oil storage) is a hydrogen storage system which can be in a liquid state at normal temperature and normal pressure, and comprises at least two different hydrogen storage components, wherein the hydrogen storage components are unsaturated aromatic hydrocarbons or heterocyclic unsaturated compounds, at least one hydrogen storage component is a low-melting-point compound, and the melting point of the low-melting-point compound is lower than 80 ℃.
Further, the hydrogen storage component is selected from heterocyclic unsaturated compounds, wherein hetero atoms in the heterocyclic unsaturated compounds are one or more of N, S, O and P.
Furthermore, the total number of heterocyclic rings and aromatic rings in the heterocyclic unsaturated compound is 1-20, and the total number of heteroatoms is 1-20.
Further, the mass fraction of the low-melting-point compound is 5 to 95% with respect to the total mass of the liquid hydrogen storage system.
Further, the liquid hydrogen storage system also comprises a hydrogenation additive, and the hydrogenation additive is a polar solvent and/or a non-polar solvent.
Furthermore, the adding amount of the hydrogenation additive is 0.1-10 mL relative to each gram of the hydrogen storage component.
Further, the different hydrogen storage components are each selected from the group consisting of benzene, toluene, ethylbenzene, o-xylene, p-xylene, styrene, phenylacetylene, anthracene, naphthalene, fluorene, aniline, carbazole, N-methylcarbazole, N-ethylcarbazole, N-propylcarbazole, N-isopropylcarbazole, N-butylcarbazole, indole, N-methylindole, N-ethylindole, N-propylindole, quinoline, isoquinoline, pyridine, pyrrole, furan, benzofuran, thiophene, pyrimidine, and imidazole, and derivatives thereof.
Further, the polar solvent is selected from one or more of ethanol, methanol, diethyl ether, dimethyl ether, acetonitrile, ethyl acetate, formamide, isopropanol, n-butanol, dioxane, n-butyl ether, isopropyl ether, dichloromethane, chloroform and dichloroethane.
Further, the nonpolar solvent is selected from one or more of n-hexane, n-pentane, cyclohexane, mesitylene, carbon disulfide, petroleum ether and carbon tetrachloride.
Further, the hydrogen storage system also includes a dehydrogenation additive selected from one or more of decalin, mesitylene, petroleum ether, and phenylene ether.
Further, the addition amount of the dehydrogenation additive is 0.1-10 mL per gram of the hydrogen storage component.
The liquid hydrogen storage carrier is subjected to hydrogenation chemical reaction under the action of the hydrogenation catalyst to generate a liquid hydrogen source material (namely liquid hydrogen oil), and the liquid hydrogen source material is subjected to dehydrogenation chemical reaction under the action of the dehydrogenation catalyst to be reduced into the liquid hydrogen storage carrier.
Example 1
The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system shown in fig. 1 comprises: the device comprises a dehydrogenation reaction unit, an integrated heat exchange unit, a hydrogen internal combustion engine 1, double motors 2 and a lithium battery 3.
The hydrogen reaction unit comprises a dehydrogenation reaction kettle 4, a hydrogen oil tank 5 and an oil storage tank 6. The dehydrogenation reaction kettle is used for carrying out dehydrogenation reaction on the liquid hydrogen oil to generate hydrogen and stored oil, the hydrogen oil tank is used for storing the liquid hydrogen oil, and the oil storage tank is used for storing the stored oil. Hydrogen generated by the dehydrogenation reaction kettle enters a hydrogen internal combustion engine through a booster pump. The hydrogen produced by the dehydrogenation system can be removed in time through the booster pump, so that the dehydrogenation efficiency is improved; meanwhile, the injection mode of hydrogen in the hydrogen internal combustion engine is improved, and the efficiency of the hydrogen internal combustion engine is improved.
The hydrogen is delivered to the hydrogen internal combustion engine to be used as hydrogen fuel, and the waste heat of the tail gas of the hydrogen internal combustion engine transfers heat to the dehydrogenation reaction unit through the integrated heat exchange unit.
The integrated heat exchange unit comprises a double-channel heat exchanger 7, a hydrogen oil pipeline and an induced draft fan 8.
The double-channel heat exchanger is provided with a hydrogen oil channel and a heating channel, the two ends of the hydrogen oil channel are communicated with the two ends of the hydrogen oil pipeline, so that the hydrogen oil pipeline forms a closed loop between the dehydrogenation reaction kettle and the double-channel heat exchanger, the hydrogen oil pipeline is respectively provided with a tee joint 9 and a three-way valve 10, the tee joint at the inlet side of the hydrogen oil channel introduces the hydrogen oil of the hydrogen oil tank into the hydrogen oil channel, the three-way valve at the outlet side of the hydrogen oil channel inputs the heated hydrogen oil into the dehydrogenation reaction kettle and the hydrogen oil pipeline in proportion, the hydrogen oil input into the dehydrogenation reaction kettle is used as a raw material of dehydrogenation reaction, and the hydrogen oil output to the hydrogen oil pipeline is used as a heat-conducting medium to heat the dehydrogenation reaction kettle and then returns to the double-channel heat exchanger. The heating channel both ends are air inlet 11 and gas vent 12, and the tail gas of hydrogen internal-combustion engine gets into through the air inlet and is regarded as the heat source, and the draught fan sets up at the gas vent for discharge and with low temperature tail gas circulation to air inlet of tail gas is accelerated, reduces the operating temperature of binary channels heat exchanger.
The traditional internal combustion engines are similar, and the exhaust emission of the hydrogen internal combustion engine cannot be greatly hindered, so that an induced draft fan is additionally arranged at an exhaust port and provides the exhaust emission kinetic energy of the hydrogen internal combustion engine; meanwhile, the low-temperature tail gas at the discharge port is circulated to the high-temperature air inlet by the induced draft fan, so that the inlet temperature is reduced, the air flow is improved, and the working temperature is reduced while the heat exchange efficiency is ensured.
The integrated heat exchange unit further comprises a heating furnace 13, wherein the heating furnace is arranged on the hydrogen oil pipeline and is positioned between the heat exchanger and the dehydrogenation reaction kettle and used for supplementing heat to the hydrogen oil.
The exhaust port of the heating channel is provided with a temperature sensor. The opening of the heating furnace and the power discharged by the induced draft fan can be adjusted according to the temperature of the exhaust port detected by the temperature sensor. When the temperature sensor detects that the temperature of the exhaust port is insufficient, the heating furnace is started, and the starting power of the heating furnace is adjusted and controlled according to the drop value of the outlet temperature; when the temperature sensor detects that the temperature of the exhaust port is too high, the exhaust caliber of the induced draft fan is increased, and exhaust is increased.
The hydrogen internal combustion engine, the double motors and the lithium battery are combined to form a hydrogen-electricity hybrid power output end to provide power output for the outside. When the required power is greater than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine is connected with the double motors in parallel, the double motors are connected with the lithium batteries in series, the lithium batteries provide electric energy for the double motors, and the double motors and the hydrogen internal combustion engine are combined to jointly output power (a solid line); when the required power is smaller than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine outputs power and simultaneously provides power for the double motors, so that the double motors can be used as generators to charge lithium batteries (dotted lines).
Example 2
The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system shown in fig. 2 comprises: the device comprises a dehydrogenation reaction unit, an integrated heat exchange unit, a hydrogen internal combustion engine 1, double motors 2 and a lithium battery 3.
The hydrogen reaction unit comprises a dehydrogenation reaction kettle 4, a hydrogen oil tank 5 and an oil storage tank 6. The dehydrogenation reaction kettle is used for carrying out dehydrogenation reaction on the liquid hydrogen oil to generate hydrogen and oil storage, the hydrogen oil tank stores the liquid hydrogen oil, and the oil storage tank stores the oil. Hydrogen generated by the dehydrogenation reaction kettle enters a hydrogen internal combustion engine through a booster pump. The hydrogen is delivered to the hydrogen internal combustion engine to serve as hydrogen fuel, and the waste heat of the tail gas of the hydrogen internal combustion engine transfers heat to the dehydrogenation reaction unit through the integrated heat exchange unit.
The integrated heat exchange unit comprises a three-channel heat exchanger 14, a medium pipeline and an induced draft fan 8.
The three-channel heat exchanger comprises a medium channel, a heating channel and a hydrogen-oil channel (figure 3), wherein two ends of the medium channel are communicated with two ends of a medium pipeline, so that the medium pipeline forms a closed loop between the dehydrogenation reaction kettle and the two-channel heat exchanger, and the heating medium in the medium channel transfers heat to the dehydrogenation reaction kettle after being heated by the three-channel heat exchanger. An air inlet 11 and an exhaust port 12 are arranged at two ends of the heating channel, tail gas of the hydrogen internal combustion engine enters through the air inlet to serve as a heat source, and the induced draft fan is arranged at the exhaust port and used for accelerating the exhaust of the tail gas and circulating low-temperature tail gas to the air inlet, so that the working temperature of the three-channel heat exchanger is reduced. The inlet end of the hydrogen-oil channel is connected with a hydrogen oil tank, the outlet end of the hydrogen-oil channel is connected with a reaction inlet of the dehydrogenation reaction kettle, and hydrogen oil is heated in the three-channel heat exchanger and then is input into the dehydrogenation reaction kettle for dehydrogenation reaction.
The integrated heat exchange unit further comprises a heating furnace 13, wherein the heating furnace is arranged on the medium pipeline and is positioned between the heat exchanger and the dehydrogenation reaction kettle and used for supplementing heat to the heating medium. The heat conducting medium is heat conducting oil.
The exhaust port of the heating channel is provided with a temperature sensor.
The hydrogen internal combustion engine, the double motors and the lithium battery are combined to form a hydrogen-electricity hybrid power output end which provides power output for the outside. When the required power is greater than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine is connected with the double motors in parallel, the double motors are connected with the lithium battery in series, the lithium battery provides electric energy for the double motors, and the double motors and the hydrogen internal combustion engine are combined to jointly output power (a solid line); when the required power is smaller than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine outputs power and simultaneously provides power for the double motors, so that the double motors can be used as generators to charge lithium batteries (dotted lines).
Example 3
The structure of the dehydrogenation unit and the integrated heat exchange unit was the same as in example 1.
The hydrogen internal combustion engine 1, the generator 15 and the lithium battery 3 are combined to form an electric-electric hybrid power output end (as shown in figure 4), when the required power is greater than the rated power of the generator, the hydrogen internal combustion engine is connected with the generator in series, the generator converts the mechanical energy provided by the hydrogen internal combustion engine into electric energy, the generator is connected with the lithium battery in parallel, and the generator and the lithium battery output the electric energy to the outside at the same time; when the required power is smaller than the rated power of the generator, the generator outputs the converted electric energy to the outside and charges the lithium battery at the same time.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An organic liquid dehydrogenation and hydrogen internal combustion engine coupling system is characterized by comprising: the device comprises a dehydrogenation reaction unit, an integrated heat exchange unit, a hydrogen internal combustion engine, a motor and a lithium battery;
the dehydrogenation reaction unit carries out dehydrogenation reaction on the liquid hydrogen oil to generate hydrogen, the hydrogen is conveyed to a hydrogen internal combustion engine to serve as hydrogen fuel, and the waste heat of the tail gas of the hydrogen internal combustion engine transfers heat to the dehydrogenation reaction unit through the integrated heat exchange unit;
the hydrogen internal combustion engine, the motor and the lithium battery are combined to form a hybrid power output end, and power output is provided for the outside.
2. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 1, wherein: the dehydrogenation reaction unit includes dehydrogenation reation kettle, hydrogen oil tank and batch oil tank, dehydrogenation reation kettle is used for carrying out the dehydrogenation reaction with liquid hydrogen oil and generates hydrogen and oil storage, and liquid hydrogen oil is stored to the hydrogen oil tank, and the batch oil tank stores the oil storage.
3. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 2, wherein: and hydrogen generated by the dehydrogenation reaction kettle enters a hydrogen internal combustion engine through a booster pump.
4. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 2, wherein: the integrated heat exchange unit comprises a double-channel heat exchanger, a hydrogen oil pipeline and an induced draft fan; the double-channel heat exchanger is provided with a hydrogen-oil channel and a heating channel, the two ends of the hydrogen-oil channel are communicated with the two ends of a hydrogen-oil pipeline, so that the hydrogen-oil pipeline forms a closed loop between the dehydrogenation reaction kettle and the double-channel heat exchanger, the hydrogen-oil pipeline is respectively provided with a tee joint and a three-way valve, the tee joint at the inlet side of the hydrogen-oil channel introduces the hydrogen oil of a hydrogen oil tank into the hydrogen-oil channel, the three-way valve at the outlet side of the hydrogen-oil channel inputs the heated hydrogen oil into the dehydrogenation reaction kettle and a hydrogen-oil pipeline in proportion, the hydrogen oil input into the dehydrogenation reaction kettle is used as a raw material for dehydrogenation reaction, and the hydrogen oil input into the hydrogen-oil pipeline is used as a heat-conducting medium to heat the dehydrogenation reaction kettle and then returns to the double-channel heat exchanger; the two ends of the heating channel are provided with an air inlet and an air outlet, tail gas of the hydrogen internal combustion engine enters through the air inlet to be used as a heat source, and the induced draft fan is arranged at the air outlet and used for accelerating the discharge of the tail gas and circulating the low-temperature tail gas to the air inlet, so that the working temperature of the double-channel heat exchanger is reduced.
5. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 2, wherein: the integrated heat exchange unit comprises a three-channel heat exchanger, a medium pipeline and an induced draft fan; the three-channel heat exchanger comprises a medium channel, a heating channel and a hydrogen-oil channel, wherein two ends of the medium channel are communicated with two ends of a medium pipeline, so that the medium pipeline forms a closed loop between the dehydrogenation reaction kettle and the two-channel heat exchanger, and the heating medium in the medium channel transfers heat to the dehydrogenation reaction kettle after being heated by the three-channel heat exchanger; the two ends of the heating channel are provided with an air inlet and an air outlet, tail gas of the hydrogen internal combustion engine enters through the air inlet to be used as a heat source, and the induced draft fan is arranged at the air outlet and used for accelerating the exhaust of the tail gas and circulating low-temperature tail gas to the air inlet so as to reduce the working temperature of the three-channel heat exchanger; the inlet end of the hydrogen-oil channel is connected with a hydrogen oil tank, the outlet end of the hydrogen-oil channel is connected with a reaction inlet of the dehydrogenation reaction kettle, and hydrogen oil is heated in the three-channel heat exchanger and then is input into the dehydrogenation reaction kettle for dehydrogenation reaction.
6. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 5, wherein: the heat conducting medium is heat conducting oil or water vapor.
7. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to any one of claims 4 to 6, wherein: the integrated heat exchange unit further comprises a heating furnace, wherein the heating furnace is arranged on the hydrogen oil pipeline in the case of a double-channel heat exchanger, and the heating furnace is arranged on the medium pipeline and positioned between the heat exchanger and the dehydrogenation reaction kettle in the case of a three-channel heat exchanger and used for supplementing heat to a heating medium or hydrogen oil.
8. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to any one of claims 4 to 6, wherein: and an exhaust port of the heating channel is provided with a temperature sensor.
9. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 1, wherein: when the motor is a double motor, the hybrid power output end adopts hydrogen-electricity hybrid power output: when the required power is greater than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine is connected with the double motors in parallel, the double motors are connected with the lithium battery in series, the lithium battery provides electric energy for the double motors, and the double motors and the hydrogen internal combustion engine are combined to jointly output power; when the required power is smaller than the rated power of the hydrogen internal combustion engine, the hydrogen internal combustion engine outputs power and simultaneously provides power for the double motors, so that the double motors can be used as generators to charge lithium batteries.
10. The organic liquid dehydrogenation and hydrogen internal combustion engine coupling system according to claim 1, wherein: when the motor is a generator, the hybrid power output end adopts the electric-electric hybrid power output: when the required power is greater than the rated power of the generator, the hydrogen internal combustion engine is connected with the generator in series, the generator converts mechanical energy provided by the hydrogen internal combustion engine into electric energy, the generator is connected with the lithium battery in parallel, and the generator and the lithium battery output the electric energy to the outside at the same time; when the required power is smaller than the rated power of the generator, the generator outputs the converted electric energy to the outside and charges the lithium battery at the same time.
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