CN208189712U - A kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car - Google Patents
A kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car Download PDFInfo
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- CN208189712U CN208189712U CN201820503438.5U CN201820503438U CN208189712U CN 208189712 U CN208189712 U CN 208189712U CN 201820503438 U CN201820503438 U CN 201820503438U CN 208189712 U CN208189712 U CN 208189712U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car, which includes alkaline urea liquid supply system, alkaline urea electrolytic cell, hydrogen purification system and fuel cell car system；First urea is added in alkaline KOH solution and is made into alkaline urea electrolyte, is then powered in electrolytic cell and alkaline urea cell reaction occurs, high-purity hydrogen obtained carries out purifying by hydrogen purification system and pressure is adjusted, and supplies fuel cell car system；The utility model reduces the voltage and energy consumption of electrolytic hydrogen production reaction by introducing urea, is the good improvement to conventional alkaline water electrolysis hydrogen producing；Clean energy resource can be generated electricity and be converted into the power of fuel cell car, realize green traffic ways；By that hydrogen gas production and wastewater treatment can be coupled together using high urea-containing waste water as electrolysis raw material.The utility model is conducive to the popularization of electrolytic hydrogen production and fuel cell car technology.
Description
Technical field
The utility model relates to Hydrogen Energy and fuel cell field, in particular to a kind of electrolysis urea hydrogen manufacturing is used for fuel cell
The system of automobile.
Background technique
With the development of social economy and the raising of living standards of the people, the environmental protection consciousness of people is gradually increased.Closely
Nian Lai, worry the problems such as to greenhouse gas emission, air pollution and energy security force people have been look for clean energy resource and
Alternative energy source carrier in each field, especially as the traffic and transport field of liquid petroleum fuel consumption rich and influential family.Made with hydrogen
Have energy conversion efficiency high, good without greenhouse gas emission, course continuation mileage length, driving experience for the fuel cell car of fuel
The advantages that, it is considered to be the preferred option of the following green transport.
In order to maintain the operation of fuel cell car, it is desirable to provide stable, convenient and fast hydrogen supply.Traditional coal chemical industry system
Hydrogen mode can generate carbon emission, cause damages to environment.Being generated electricity using clean energy resource and carrying out electrolytic hydrogen production is that uniquely can be realized
Environmentally protective hydrogen gas production mode.Conventional electrolytic hydrogen production is using the KOH aqueous solution of 20%-30% as electrolyte, electrolysis
Process energy consumption is higher, and the power consumption of usual every standard cubic meter hydrogen causes the economy of electrolytic hydrogen production poor in 5kWh or more, limits
The popularization of electrolytic hydrogen production mode is made.A fundamental cause for causing electrolytic hydrogen production energy consumption high is that electrolysis water generates hydrogen and oxygen
Reaction electromotive force it is higher (1.23V), it is meant that must can just promote reaction with higher voltage.In order to reduce electrolysis system
Hydrogen Energy consumption, needs to find a kind of highly effective reaction system from principle, reduces the electromotive force of electrolytic hydrogen production reaction.
Urea [(NH2)2CO] it is a kind of nontoxic, stable, nonflammable substance, exist under room temperature with solid forms.It is theoretical
On, urea can be aoxidized by electrochemical means, and nitrogen is obtained in anode, obtains hydrogen in cathode, standard eleotromotive force 0.37V,
Far below the reaction electromotive force (1.23V) that electrolysis water generates hydrogen and oxygen, therefore urea may be realized under lower energy consumption
Electrolytic hydrogen production.Urea has been realized in industrialized production, can also generate from approach such as the urines of people and livestock every year a considerable number of
Urea, this makes urea become a kind of good potential hydrogen supply material.
Summary of the invention
In order to overcome the defects of the prior art described above, the utility model wishes to find a kind of efficient hydrogen supply material substitution electricity
Solve water hydrogen manufacturing；The utility model provides a kind of system that urea electrolytic hydrogen production is used for fuel cell car, reduces electrolytic hydrogen production
Energy consumption, realize and from hydrogen be supplied to fuel cell car whole process green non-pollution, reduce the overall cost of whole process, thus
Push the development of clean traffic means of transportation.
In order to achieve the above object, the technical solution of the present invention is:
A kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car, including alkaline urea liquid supply system 1, alkalinity
Urea electrolytic cell 2, hydrogen purification system 3 and fuel cell car system 4；The electrolysis of the alkalinity urea liquid supply system 1
Liquid outlet connects the electrolyte entrance of alkaline urea electrolytic cell 2, and the electrolyte outlet of alkaline urea electrolytic cell 2 connects alkaline urea
The cathode gas outlet of the electrolyte loop head of solution supply system 1, alkaline urea electrolytic cell 2 connects hydrogen purification system 3
Gas access, hydrogen purification system 3 gas vent connection fuel cell car system 4 gas access.
The alkalinity urea liquid supply system 1 includes stirred autoclave, the urea charging dress being connected to stirred autoclave
It sets and alkali liquor storage tank, is connected to the delivery pump of stirred autoclave and urea feeding device and alkali liquor storage tank.
It is described alkalinity urea electrolytic cell be conventional alkaline electrolytic cell, anode be nickel-based oxide or nickel-base alloy oxide,
Cathode is nickel-base alloy.
The fuel cell car system 4 includes vehicle-mounted hydrogen-storing device, fuel cell pile and the auxiliary unit being connected；
The vehicle-mounted hydrogen-storing device uses high-pressure gaseous hydrogen storage or solid-state hydrogen storage.
The system carries out the method that electrolysis urea hydrogen manufacturing is used for fuel cell car, includes the following steps:
Step 1: alkaline urea electrolyte is made into alkaline urea liquid supply system 1；
Step 2: the alkaline urea electrolyte being made into alkaline urea liquid supply system 1 being squeezed into alkaline urea and is electrolysed
In pond 2, it is powered and following cell reaction occurs:
Cathode:
6H2O+6e-→3H2+6OH-E °=- 0.83V vs SHE
Anode:
CO(NH2)2+6OH-→N2+5H2O+CO2+6e-E °=- 0.46V vs SHE
Overall reaction:
CO(NH2)2+H2O→N2+3H2+CO2E=0.37V
High-purity hydrogen is generated in the cathode of alkaline urea electrolytic cell 2, generates nitrogen and carbon dioxide in anode；
Step 3: the high-purity hydrogen that the cathode of alkaline urea electrolytic cell 2 generates enters hydrogen purification system 3；
Step 4: hydrogen is filled into fuel cell car system 4 from hydrogen purification system 3, is generated electricity by fuel cell pile
Drive automobile engine operating.
In the step 1, the alkaline urea electrolyte being made into alkaline urea liquid supply system 1 is containing urea
KOH solution, wherein the mass fraction of urea is 2-10%, and the mass fraction of KOH is 20-30%.
In the step 1, urea is made of the urine or industry of people or livestock in alkaline urea liquid supply system 1
Product.
In the step 2, applied voltage needed for urea cell reaction is 0.40-1.10V；The temperature of urea cell reaction is
25-40℃；The CO that the anode of alkaline urea electrolytic cell 2 generates2It can be with the OH in electrolyte-Reaction generate carbonate, in the process without
CO2Discharge.
In the step 3, the hydrogen purity that hydrogen purification system 3 generates is 99.999% or more；
In the step 4, the exporting hydrogen pressure of hydrogen purification system 3 is needed with the use of fuel cell car system 4
It asks and adjusts, in which: when fuel cell system uses 35MPa high-pressure hydrogen storing bottle, the Hydrogen Vapor Pressure of hydrogen purification system 3 is
45MPa or more；When fuel cell system uses 70MPa high-pressure hydrogen storing bottle, the Hydrogen Vapor Pressure of hydrogen purification system 3 is 90MPa
More than；When fuel cell system uses solid-state hydrogen storage mode, the Hydrogen Vapor Pressure of hydrogen purification system 3 is 10-30MPa.
The utility model has following outstanding excellent due to the electrolyte using alkaline urea liquid as electrolytic hydrogen production
Point:
(1) compared to conventional electrolyzed alkaline water hydrogen manufacturing, the alkaline electrolysis urea reaction of the utility model has lower
Voltage significantly reduces the power consumption of electrolytic hydrogen production.Since the electricity charge account for 80% or more of alkaline electrolysis hydrogen manufacturing cost, power consumption is reduced
The cost that hydrogen can be significantly reduced improves the market competitiveness of hydrogen；
(2) when be electrolysed urea hydrogen manufacturing electric energy from clean energy resource generate electricity when, the utility model may be implemented cleaning, it is green
Color, free of contamination hydrogen production process；
(3) electrolytic cell that electrolysis urea hydrogen manufacturing uses is conventional alkaline electrolytic cell, is easy to implement engineer application；Electrolysis method produces
Raw hydrogen purity is very high, can be used with direct feed fuels battery car, without purifying, the system in the utility model is made to exist
Advantage is had more in cost；
(4) urea in the utility model can use people or livestock urine or other high urea-containing waste waters for source,
System cost is further decreased, and urea is become by nitrogen discharge by electrolysis, has reached waste water while producing hydrogen
The effect of processing.Meanwhile in electrolytic hydrogen production process, the carbon dioxide that anode generates can be absorbed or be caught by the electrolyte of alkalinity
It obtains without being discharged, reduces because of CO2The influence of bring greenhouse effects.
Detailed description of the invention
Fig. 1 is the working principle diagram of alkaline urea electrolytic cell.
Fig. 2 is the system schematic that efficient electrolysis urea hydrogen manufacturing is used for fuel cell car.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Example 1:
As shown in Figure 1, the cathode of alkaline urea electrolytic cell 2 is Ni-Co-Fe alloy electrode, anode is Ni (OH)2Nanometer electricity
Pole, the ingredient of alkaline urea electrolyte are as follows: the mass fraction of KOH is 30%, and the mass fraction of urea is 10%.Urea comes from work
Industry manufactured goods.
As shown in Fig. 2, the alkaline urea electrolyte being made into alkaline urea liquid supply system 1 is squeezed into alkaline urea
In electrolytic cell 2, cell reaction occurs under the applied voltage of 0.52V, generates High Purity Hydrogen in the cathode of alkaline urea electrolytic cell 2
Gas generates nitrogen and carbon dioxide in the anode of alkaline urea electrolytic cell 2, wherein CO2With the OH in electrolyte-Reaction generates
K2CO3, in the process without CO2Discharge.In the high-purity hydrogen that the cathode of alkaline urea electrolytic cell 2 generates, into hydrogen purification system 3,
Hydrogen purity reaches 99.999% after purified, by being stored in after compressor boost in the high-pressure hydrogen storing tank of 45MPa, fuel electricity
Pond automotive system 4 is equipped with the vehicle-mounted high-pressure hydrogen storing device of 35MPa, and hydrogen is filled into fuel cell car from hydrogen purification system 3
System 4 is generated electricity by fuel cell pile and drives automobile engine operating.In this example, the energy consumption for generating mark side's hydrogen is only
The half of conventional electrolysis water hydrogen manufacturing mode, significantly reduces operating cost.When applied voltage is from clean energy resource power generation, such as water
When electricity, wind-powered electricity generation, photovoltaic power generation, cleaning, green, free of contamination hydrogen production process may be implemented.
Example 2:
As shown in Figure 1, the cathode of alkaline urea electrolytic cell 2 is Ni-Fe/RGO combination electrode, anode is nano NiO/foam
Nickel electrode, the ingredient of alkaline urea electrolyte are as follows: the mass fraction of KOH is 30%, and the mass fraction of urea is 5%.Urea comes
High urea-containing waste water from farm.
As shown in Fig. 2, the alkaline urea electrolyte being made into alkaline urea liquid supply system 1 is squeezed into alkaline urea
In electrolytic cell 2, cell reaction occurs under the applied voltage of 0.88V, generates High Purity Hydrogen in the cathode of alkaline urea electrolytic cell 2
Gas generates nitrogen and carbon dioxide in the anode of alkaline urea electrolytic cell 2, wherein CO2With the OH in electrolyte-Reaction generates
K2CO3, in the process without CO2Discharge.In the high-purity hydrogen that the cathode of alkaline urea electrolytic cell 2 generates, into hydrogen purification system 3,
Hydrogen purity reaches 99.999% after purified, by being stored in after compressor boost in the high-pressure hydrogen storing tank of 45MPa, fuel electricity
Pond automotive system 4 is equipped with the vehicle-mounted high-pressure hydrogen storing device of 35MPa, and hydrogen is filled into fuel cell car from hydrogen purification system 3
System 4 is generated electricity by fuel cell pile and drives automobile engine operating.In this example, the energy consumption for generating mark side's hydrogen is only
The 80% of conventional electrolysis water hydrogen manufacturing mode, significantly reduces operating cost.When applied voltage is from clean energy resource power generation, such as water
When electricity, wind-powered electricity generation, photovoltaic power generation, cleaning, green, free of contamination hydrogen production process may be implemented.Urea is contained using the height on farm
Urea waste water is source, further reduced system cost, and urea is become nitrogen discharge by electrolysis, in production hydrogen
While achieved the effect that wastewater treatment.
Claims (4)
1. a kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car, it is characterised in that: supplied including alkaline urea liquid
System (1), alkaline urea electrolytic cell (2), hydrogen purification system (3) and fuel cell car system (4)；
The electrolyte outlet of the alkalinity urea liquid supply system (1) connects the electrolyte entrance of alkaline urea electrolytic cell (2),
The electrolyte outlet of alkaline urea electrolytic cell (2) connects the electrolyte loop head of alkaline urea liquid supply system (1), alkalinity
The gas access of cathode gas outlet connection hydrogen purification system (3) of urea electrolytic cell (2), the gas of hydrogen purification system (3)
The gas access of body outlet connection fuel cell car system (4).
2. a kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car according to claim 1, it is characterised in that: institute
Stating alkaline urea liquid supply system (1) includes stirred autoclave, the urea feeding device and lye being connected to stirred autoclave
Storage tank is connected to the delivery pump of stirred autoclave and urea feeding device and alkali liquor storage tank.
3. a kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car according to claim 1, it is characterised in that: institute
Stating alkaline urea electrolytic cell is conventional alkaline electrolytic cell, and anode is nickel-based oxide or nickel-base alloy oxide, and cathode is Ni-based
Alloy.
4. a kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car according to claim 1, it is characterised in that: institute
Stating fuel cell car system (4) includes vehicle-mounted hydrogen-storing device, fuel cell pile and the auxiliary unit being connected；It is described vehicle-mounted
Hydrogen-storing device uses high-pressure gaseous hydrogen storage or solid-state hydrogen storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820503438.5U CN208189712U (en) | 2018-04-10 | 2018-04-10 | A kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car |
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| CN201820503438.5U CN208189712U (en) | 2018-04-10 | 2018-04-10 | A kind of system that electrolysis urea hydrogen manufacturing is used for fuel cell car |
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| CN208189712U true CN208189712U (en) | 2018-12-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390085A (en) * | 2018-04-10 | 2018-08-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of electrolysis urea hydrogen manufacturing is used for the system and method for fuel cell car |
| WO2024001709A1 (en) * | 2022-07-01 | 2024-01-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for alternately performing urea electrolysis-based hydrogen production and carbon reduction, and application system |
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2018
- 2018-04-10 CN CN201820503438.5U patent/CN208189712U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390085A (en) * | 2018-04-10 | 2018-08-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of electrolysis urea hydrogen manufacturing is used for the system and method for fuel cell car |
| WO2024001709A1 (en) * | 2022-07-01 | 2024-01-04 | 中国华能集团清洁能源技术研究院有限公司 | System and method for alternately performing urea electrolysis-based hydrogen production and carbon reduction, and application system |
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