CN218779035U - Distributed hydrogen supply system constructed by movable biomass direct electrolysis hydrogen production platform - Google Patents
Distributed hydrogen supply system constructed by movable biomass direct electrolysis hydrogen production platform Download PDFInfo
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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
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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
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Abstract
The utility model provides a distributed hydrogen supply system who is founded by portable living beings direct electrolysis hydrogen manufacturing platform, including power module, living beings preprocessing module, living beings direct electrolysis platform, hydrogen purification module, hydrogen pressurization module, hydrogen supply module and centralized control module, centralized control module links to each other with power module, living beings preprocessing module, living beings direct electrolysis platform, hydrogen purification module and hydrogen pressurization module simultaneously. Through carrying out the modularized design with each unit of hydrogen manufacturing, highly integrated into movable hydrogen manufacturing platform, the hydrogen manufacturing system of constitution distributing type is built, makes new hydrogen manufacturing installation miniaturized, lightweight, and the assembly of being convenient for can be along with the system along with the usefulness, provides convenient hydrogenation service.
Description
Technical Field
The utility model relates to a hydrogen manufacturing technology field, concretely relates to distributed hydrogen supply system who is founded by portable living beings direct electrolysis hydrogen manufacturing platform.
Background
The hydrogen energy is a high-energy-content clean energy with zero carbon emission, and plays an important role in the energy structure of the low-carbon society. The hydrogen energy can be used as vehicle-mounted energy, converted into electric energy through the hydrogen fuel cell and mixed with hydrocarbon fuel to provide heat energy, so that the hydrogen energy can be mutually and complementarily interconnected in a large range with multiple energy varieties such as electric power, heating power, oil gas and coal in the energy field, and the energy structure is optimized. Meanwhile, hydrogen energy is used as a secondary energy source and can be obtained only by preparation or energy conversion. Based on the requirement of low carbon emission, the hydrogen energy source is preferably the conversion from renewable energy sources, such as the electrolysis of water to produce hydrogen by solar energy, wind power generation and electric energy. The hydrogen energy source prepared by the method is called green hydrogen, and the preparation process of the hydrogen energy source does not generate carbon emission basically. However, the electric energy consumption in the hydrogen production process by electrolyzing water is huge, and the current technology needs about 5 to 6kWh of electric energy to produce 1Nm 3 The hydrogen gas of (2) has a large burden of economic cost. The method for reducing the electric energy consumption of hydrogen production by using the biomass renewable energy as the source of hydrogen production. On one hand, the lignocellulose biomass stores solar energy through photosynthesis and can be regenerated in a short time; on the other hand, the biomass releases chemical energy in the conversion reaction process of hydrogen production, and the consumption of electric energy is reduced. Patent CN114182294A proposes a dual catalyst system and method for electrochemically degrading biomass refined organic waste to produce hydrogen, which can greatly reduce the power consumption of hydrogen production.
The use of hydrogen energy still faces storage and transportation problems. For example, when hydrogen energy is used as vehicle energy, it is necessary to widely construct hydrogen stations along the highway. Hydrogen is extremely light in weight and difficult to liquefy, and therefore enormous transportation costs are required even if highly compressed hydrogen is transported. The problems of hydrogen embrittlement prevention special steel, infrastructure construction, hydrogen leakage and the like are faced when pipeline transportation is adopted. Therefore, the construction of a movable hydrogen production platform capable of producing hydrogen on site is a strategy for solving the problem of hydrogen storage and transportation. The research on the mobile hydrogen production devices at present includes miniaturized vehicle-mounted water electrolysis devices (CN 106637279A and CN 101941418B), mobile devices for reforming hydrogen production by using organic liquid hydrogen storage raw materials (CN 111895266A), mobile devices for reforming hydrogen production by using methanol (CN 103058137B), mobile devices for producing hydrogen by using metal or metal hydride (CN 103058137B), mobile devices for reforming hydrogen production by using city gas or liquid fuel, and the like (CN 1501535A). The biomass resource is a widely distributed resource, and comprises agricultural and forestry wastes (such as dead tree leaves, wheat straws, straws and the like), organic waste liquid produced in the papermaking and fermentation industries, organic matter kitchen waste produced in the life of residents and the like. These resources are usually distributed dispersedly, and if the resources are processed in a large-scale centralized way, a large amount of transportation cost is consumed to centralize the scattered resources. Therefore, the problem of centralized transportation of dispersed biomass resources is avoided by establishing the mobile biomass direct electrolysis hydrogen production platform. On the other hand, the small-sized modularized device can establish a distributed hydrogen supply system, can carry out biomass conversion according to local conditions, and can simultaneously produce and supply hydrogen. Compared with a miniaturized device for electrolyzing water, the mobile biomass direct platform does not need a high-purity water source and a water purification device, can also process high-concentration organic wastewater to prepare hydrogen, and realizes the integration of environmental benefits and multiple resources. Before the application of the utility model, the utility model discloses the people has applied for the patent of patent number 202111336320.0 and CN106676564B, provides one kind and has converted into the method of hydrogen through the electrochemistry method with the living beings conversion, but the hydrogen plant among the utility model can not remove, must build the place at fixed site selection, faces the living beings raw materials and need concentrate the transportation, and the problem that produced hydrogen must concentrate the transport.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model still adopts the principle of hydrogen production by biomass electrochemical conversion, each unit of hydrogen production is designed in a modularized way, and is highly integrated into a movable hydrogen production platform, and a distributed hydrogen production system is constructed, so that the novel hydrogen production device is miniaturized, light in weight, convenient to assemble, and can be used along with the system, and convenient hydrogenation service is provided; the whole system can be contained in a container, and can convert biomass such as wheat straws, rice straws and kitchen garbage with simple components into hydrogen with lower electric energy consumption than that of conventional electrolyzed water
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: a distributed hydrogen supply system constructed from a mobile biomass direct electrolytic hydrogen production platform, comprising:
the power supply module is used for providing required electric energy for the operation of the whole system;
the biomass pretreatment module is used for pretreating biomass raw materials;
the biomass direct electrolysis platform is connected with the biomass pretreatment module and is used for electrolyzing the pretreated biomass raw material to produce hydrogen; the biomass direct electrolysis platform is connected with the power supply module;
the hydrogen purification module is connected with the biomass direct electrolysis platform and is used for purifying the prepared hydrogen;
the hydrogen pressurizing module is connected with the hydrogen purifying module and is used for pressurizing hydrogen;
the hydrogen supply module is connected with the hydrogen pressurization module and is used for supplying hydrogen;
the system also comprises a centralized control module which is simultaneously connected with the power supply module, the biomass pretreatment module, the biomass direct electrolysis platform, the hydrogen purification module and the hydrogen pressurization module.
The power supply module is provided with two sets of power supply components in total, wherein one set of power supply components is connected with a direct-current power supply interface of the silicon solar electrode plate and is connected into the switch box after passing through the rectifying transformer box;
the other set of power supply part is a first power supply interface and a second power supply interface which are used for converting 220/380V alternating current to direct current, and is connected into the switch box after passing through the alternating current-direct current conversion box;
the switch box is provided with an output port, and the output port is connected with a module which needs power utilization by the system.
The working voltage of the output port is controlled to be 40-120V, and the current is controlled to be 80-250A;
when the output power of the silicon solar electrode plate is insufficient or is controlled by the centralized control module, the power supply module can switch between the interfaces of the two sets of power supply components.
The biomass pretreatment module comprises a pretreatment box body, and a biomass charging hole and an exhaust hole are formed in the top of the pretreatment box body; a crusher for crushing biomass raw materials is arranged in the pretreatment box body, a discharge port of the crusher is connected with a mixing barrel, and an outlet of the mixing barrel is connected with a biomass direct electrolysis platform;
the pulverizer treats the biomass raw material into biomass particles with the size of 100-300 meshes, and biomass slurry with the solid content of 3% -10% is obtained in the mixing barrel.
The biomass direct electrolysis platform comprises an anode liquid storage tank, a cathode liquid storage tank, an anode pump, a cathode pump and an electrolysis pile; the top of the anode liquid storage tank is communicated with the mixing barrel of the biomass pretreatment module, and the lower part of the anode liquid storage tank is connected with the electrolytic cell through an anode pump; the lower part of the cathode liquid storage tank is connected with the electrolytic stack through a cathode pump, and an air outlet at the top of the cathode liquid storage tank is connected with the hydrogen purification module; the electrolytic stack is connected with an output port of the power supply module.
The volume of the anode liquid storage tank is 50-200L; the volume of the cathode liquid storage tank is 30-100L; the anode pump and the cathode pump are corrosion-resistant diaphragm pumps, and the flow rate is 1-10L/min; the electrolytic stack is composed of graphite bipolar plate and proton exchange membrane, and graphite felt is filled in the flow channel of the bipolar plate to increase the electrolytic efficiency, wherein the anode plate is made of common graphite, and the cathode plate is made of common graphiteCoated with platinum catalyst in an amount of 0.01-1g/m 2 The design power of the whole electrolytic stack is 5-10kW; the anode liquid storage tank and the cathode liquid storage tank are both corrosion-resistant glass-lined or enamel-lined reaction kettles, and a gas outlet is reserved.
The anolyte is [ SiMo ] 12 O 40 ] 4- 、[PMo 12 O 40 ] 3- 、[PMo 9 V 3 O 40 ] 6- 、[PMo 10 V 2 O 40 ] 5- 、[PMo 11 VO 40 ] 4- 、[SiMo 9 V 3 O 40 ] 7- 、[SiMo 10 V 2 O 40 ] 6- 、[SiMo 11 VO 40 ] 5- 、CuCl 4 2- 、CrCl 6 3- 、FeCl 4 - A mixture of one or more of the ions; the catholyte is H 3 PO 4 Or H 2 SO 4 The concentration of the solution, the cathode electrolyte and the anode electrolyte is 0.1-3mol/L.
The hydrogen purification module comprises a hydrogen dehydration steam device for removing water vapor in hydrogen, the air inlet of the hydrogen dehydration steam device is connected with the air outlet of the cathode liquid storage tank of the biomass direct electrolysis platform, the condensed water of the hydrogen dehydration steam device returns to the cathode electrolyte through the water outlet, and the air outlet of the hydrogen dehydration steam device is connected with the hydrogen pressurization module;
the hydrogen pressurization module comprises a two-stage hydrogen pressurization device, the first stage is a hydrogen pre-compression tank to further remove moisture and impurities, and the second stage of compression increases the pressure of hydrogen to at least 35MPa and then the hydrogen enters a hydrogen storage tank;
the hydrogen storage tank adopts a stainless steel inner container pressure device wound by high-strength carbon fibers, and is provided with a check valve in front, and a hydrogen supply port connected with the hydrogen supply module on the hydrogen storage tank is connected with the hydrogen supply module and directly supplies hydrogen energy.
The centralized control module is a self-feedback system consisting of a temperature sensor, an electrode potential sensor, a water level sensor, a pressure sensor, a flow sensor, a voltage sensor and a current sensor;
the temperature sensors respectively detect the temperatures of the electrolytic stack, the cathode liquid storage tank and the anode liquid storage tank, and the temperature is controlled between 80 and 120 ℃;
an electrode potential sensor detects the electrode potential of the anolyte, the anode side electrode potential is between 0.2 to 0.6V Vs and HER, when the electrode potential rises to exceed 1.0V Vs and HER, a feeding device of biomass slurry is started, and biomass raw materials are added into an anode liquid storage tank;
the pressure sensors respectively monitor the pressure of the cathode liquid storage tank, the anode liquid storage tank and the hydrogen storage tank, and the hydrogen production system is powered off and stops working when the pressure exceeds a threshold value;
the flow sensor monitors the flow speed of the cathode electrolyte and the anode electrolyte;
the voltage and current sensors monitor the electrochemical parameters of the pile during operation.
The utility model discloses there is following beneficial effect:
1. the utility model discloses a hydrogen manufacturing system is highly integrated, has the characteristics of mobility and distributing type, can utilize the abandonment living beings of dispersion, like dead branch leaf, wheat straw, industry organic waste liquid to and the organic matter that the resident life produced cupboard remains rubbish and carries out conversion hydrogen manufacturing on the spot as the raw materials, avoids the problem of the long distance transportation of living beings, can alleviate local environmental pressure.
2. The utility model discloses carry out modular design with each unit of hydrogen manufacturing, high integration is for movable hydrogen manufacturing platform, constitutes the hydrogen manufacturing system of distributing type, and new hydrogen manufacturing installation is miniaturized, lightweight, and the assembly of being convenient for can be along with the system along with usefulness, provides convenient hydrogenation service.
3. The utility model discloses the energy that can utilize has the electric energy that comes from silicon solar cell and the renewable biomass energy. Compared with a device for producing hydrogen by electrolyzing water, the mobile biomass direct platform does not need a high-purity water source and a water purification device, can also process high-concentration organic wastewater to produce hydrogen, and realizes the integration of environmental benefits and multiple energy sources.
4. The biomass pretreatment module can be used for pretreating biomass raw materials, so that the subsequent hydrogen production process is facilitated.
5. The direct biomass electrolysis platform can produce hydrogen through electrochemical conversion of the electrolyzed biomass.
6. The hydrogen purification module can effectively remove water vapor impurities in the prepared hydrogen, and further ensures the purity of the hydrogen.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a structural diagram of the distributed hydrogen production system of the present invention.
Fig. 2 is the structure diagram of the power supply module of the present invention.
Fig. 3 is a structural diagram of the pretreatment module and the mobile hydrogen production platform of the utility model.
Fig. 4 is a structure diagram of the hydrogen purification module and the hydrogen supply module of the present invention.
In the figure: the system comprises a power supply module 1, a biomass pretreatment module 2, a biomass direct electrolysis platform 3, a centralized control module 4, a hydrogen purification module 5, a hydrogen pressurization module 6, a biomass charging hole 7, an exhaust port 8 and a hydrogen supply module 9;
the power supply comprises a direct-current power supply interface 11, a first power supply interface 12, a second power supply interface 13, an output port 14, a rectification transformer box 15, an alternating-current and direct-current conversion box 16 and a switch box 17;
a pulverizer 21 and a mixing barrel 22;
an anode liquid storage tank 31, a cathode liquid storage tank 32, an anode pump 33, a cathode pump 34 and an electrolytic stack 35;
a hydrogen gas precompression tank 61, a hydrogen storage tank 62, a check valve 63, and a hydrogen supply port 64.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
Example 1:
referring to fig. 1-4, a distributed hydrogen supply system constructed from a mobile biomass direct electrolytic hydrogen production platform includes: the power supply module 1 is used for providing required electric energy for the operation of the whole system; the biomass pretreatment module 2 is used for pretreating biomass raw materials; the biomass direct electrolysis platform 3 is connected with the biomass pretreatment module 2 and is used for electrolyzing the pretreated biomass raw material to produce hydrogen; the biomass direct electrolysis platform 3 is connected with the power supply module 1; the hydrogen purification module 5 is connected with the biomass direct electrolysis platform 3 and is used for purifying the prepared hydrogen; the hydrogen pressurizing module 6 is connected with the hydrogen purifying module 5 and is used for pressurizing hydrogen; the hydrogen supply module 9 is connected with the hydrogen pressurization module 6, and is used for supplying hydrogen; the biomass direct electrolysis system is characterized by further comprising a centralized control module 4, wherein the centralized control module 4 is connected with the power supply module 1, the biomass pretreatment module 2, the biomass direct electrolysis platform 3, the hydrogen purification module 5 and the hydrogen pressurization module 6 at the same time. By adopting the distributed hydrogen supply system, the modularized system structure design is adopted, each unit for hydrogen production is subjected to modularized design by virtue of the principle of biomass electrochemical conversion hydrogen production, the hydrogen production units are highly integrated into a movable hydrogen production platform, and a distributed hydrogen production system is constructed, so that a new hydrogen production device is miniaturized and light, is convenient to assemble, can be used along with production, and provides convenient hydrogenation service.
Furthermore, the biomass raw material can be converted by adopting biomass such as wheat straws, rice straws and kitchen garbage with simple components, and hydrogen is prepared by using electric energy consumption lower than that of the conventional electrolytic water.
Furthermore, the power supply module 1 has two sets of power supply components, wherein one set of power supply component is connected with the direct-current power supply interface 11 of the silicon solar electrode plate and is connected to the switch box 17 after passing through the rectifying transformer box 15; the other set of power supply components are a first power supply interface 12 and a second power supply interface 13 which convert 220/380V alternating current to direct current, and are connected to a switch box 17 after passing through an alternating current-direct current conversion box 16; an output port 14 is arranged on the switch box 17, and the output port 14 is connected with a module which needs power utilization by the system. By adopting the power supply module 1, the power supply of the system in the operation process can be flexibly selected according to the requirement, so that the flexibility and the adaptability of the system operation are enhanced.
Further, the working voltage of the output port 14 is controlled to be 40-120V, and the current is controlled to be 80-250A. Through the voltage and current output control, the operation requirements under different working conditions in the system operation process can be met, and the reliability of system operation is ensured.
Further, when the output power of the silicon solar electrode plate is insufficient or is controlled by the centralized control module 4, the power supply module can switch between the interfaces of the two sets of power supply components. And further, the automatic operation of the system is improved, the operation efficiency is improved, and the operation reliability is ensured.
Further, the biomass pretreatment module 2 comprises a pretreatment box body, and a biomass charging opening 7 and an exhaust opening 8 are arranged at the top of the pretreatment box body; the inside of preliminary treatment box is provided with and is used for carrying out kibbling rubbing crusher 21 to biomass raw materials, and rubbing crusher 21's discharge gate links to each other with compounding bucket 22, and the export of compounding bucket 22 links to each other with living beings direct electrolysis platform 3. The biomass pretreatment module 2 can be used for pretreating biomass raw materials, so that the subsequent hydrogen production process is facilitated. In the specific use process, the biomass raw materials are put into the crusher 21 through the biomass charging hole 7, crushed through the crusher 21 and prepared into required biomass particles, and then sent into the corresponding mixing barrel 22 to perform the subsequent mixing treatment process.
Further, the pulverizer 21 processes the biomass raw material into biomass particles with the size of 100-300 meshes, and biomass slurry with the solid content of 3% -10% is obtained in the mixing barrel 22. By adopting the pretreatment parameters, the optimal biomass hydrogen production effect can be ensured to be achieved subsequently.
Further, the biomass direct electrolysis platform 3 comprises an anode storage tank 31, a cathode storage tank 32, an anode pump 33, a cathode pump 34 and an electrolysis pile 35; the top of the anode liquid storage tank 31 is communicated with the mixing barrel 22 of the biomass pretreatment module 2, and the lower part of the anode liquid storage tank 31 is connected with the electrolytic pile 35 through an anode pump 33; the lower part of the cathode liquid storage tank 32 is connected with an electrolytic stack 35 through a cathode pump 34, and an air outlet at the top part of the cathode liquid storage tank 32 is connected with the hydrogen purification module 5; the electrolytic stack 35 is connected to the output 14 of the power supply module 1. The direct biomass electrolysis platform 3 can produce hydrogen through electrochemical conversion of electrolyzed biomass. Tool bodyIn the preparation process, the power supply module converts the solar energy or the commercial power into direct current and then applies the voltage to the cathode and the anode of the electrolytic stack 35, and meanwhile, the pumps of the cathode and the anode continuously circulate the electrolyte; hydrogen is generated at the cathode side, purified and pressurized to a proper pressure, biomass at the anode side is dissolved and subjected to oxidative degradation reaction under the action of the anolyte, and finally oxidized into CO 2 (ii) a When the electrode potential of the anolyte rises, the feedback of the centralized control module is triggered, the material supplementing operation is carried out, the biomass raw material is added, and the reaction is kept continuously; meanwhile, parameters such as electrolyte water level, electrolyte storage tank pressure and the like are monitored, and corresponding operations such as water replenishing, pressure releasing and the like are carried out when the parameters change.
Further, the volume of the anode liquid storage tank 31 is 50-200L; the volume of the cathode liquid storage tank 32 is 30-100L; the anode pump 33 and the cathode pump 34 are corrosion-resistant diaphragm pumps, and the flow rate is 1-10L/min; the electrolytic stack 35 is composed of graphite bipolar plate and proton exchange membrane, the flow channel of the bipolar plate is filled with graphite felt to increase the electrolytic efficiency, wherein the anode plate is made of common graphite, and the cathode plate is plated with platinum catalyst with the dosage of 0.01-1g/m 2 The design power of the whole electrolytic stack is 5-10kW; the anode liquid storage tank 31 and the cathode liquid storage tank 32 are both corrosion-resistant glass-lined or enamel-lined reaction kettles, and a gas outlet is reserved. By adopting the specific process parameters, the normal operation of the electrochemical hydrogen production by the electrolytic biomass is ensured, the optimal preparation effect is ensured, and the preparation efficiency is further improved.
Further, the anolyte is a mixture of one or more of ions having redox properties.
Preferably, the anolyte is [ SiMo ] 12 O 40 ] 4- 、[PMo 12 O 40 ] 3- 、[PMo 9 V 3 O 40 ] 6- 、[PMo 10 V 2 O 40 ] 5- 、[PMo 11 VO 40 ] 4- 、[SiMo 9 V 3 O 40 ] 7- 、[SiMo 10 V 2 O 40 ] 6- 、[SiMo 11 VO 40 ] 5- 、CuCl 4 2- 、CrCl 6 3- 、FeCl 4 - A mixture of one or more of the ions; the catholyte is H 3 PO 4 Or H 2 SO 4 The concentration of the solution, the cathode electrolyte and the anode electrolyte is 0.1-3mol/L.
Further, the hydrogen purification module 5 comprises a hydrogen dehydration steam device for removing steam in hydrogen, an air inlet of the hydrogen dehydration steam device is connected with an air outlet of the cathode liquid storage tank 32 of the biomass direct electrolysis platform 3, condensed water of the hydrogen dehydration steam device returns to the cathode electrolyte through a water outlet 51, and the air outlet of the hydrogen dehydration steam device is connected with the hydrogen pressurization module 6. By adopting the hydrogen purification module 5, water vapor impurities in the prepared hydrogen can be effectively removed, and the purity of the hydrogen is further ensured.
Further, the hydrogen pressurizing module 6 comprises a two-stage hydrogen pressurizing device, wherein the first stage is a hydrogen pre-compressing tank 61 to further remove moisture and impurities, and the second stage increases the pressure of hydrogen to at least 35MPa and then enters a hydrogen storage tank 62; the hydrogen pressurizing module 6 can be used for effectively pressurizing hydrogen, so that the hydrogen can be conveniently stored and the subsequent hydrogenation operation is convenient. And the multistage grading pressurization is adopted, so that the pressurization effect can be ensured to the greatest extent, the energy consumption in the pressurization process is reduced, and the purposes of energy conservation and consumption reduction are achieved.
Further, the hydrogen storage tank 62 is a stainless steel inner container pressure device wound by high-strength carbon fibers, and is provided with a check valve 63 in front, and a hydrogen supply port 64 is connected to the hydrogen supply module 9 on the hydrogen storage tank to directly supply hydrogen energy. The safety and reliability in the process of pressurizing and storing high-pressure hydrogen are ensured by the structure.
Furthermore, the centralized control module 4 is a self-feedback system composed of a temperature sensor, an electrode potential sensor, a water level sensor, a pressure sensor, a flow sensor, a voltage sensor and a current sensor; the temperature sensors respectively detect the temperatures of the electrolytic stack, the cathode liquid storage tank and the anode liquid storage tank, and the temperature is controlled between 80 and 120 ℃; an electrode potential sensor detects the electrode potential of the anolyte, the anode side electrode potential is between 0.2 to 0.6V Vs and HER, when the electrode potential rises to exceed 1.0V Vs and HER, a feeding device of biomass slurry is started, and biomass raw materials are added into an anode liquid storage tank; the pressure sensors respectively monitor the pressure of the cathode liquid storage tank, the anode liquid storage tank and the hydrogen storage tank, and the hydrogen production system is powered off and stops working when the pressure exceeds a threshold value; the flow sensor monitors the flow speed of the cathode electrolyte and the anode electrolyte; the voltage and current sensors monitor the electrochemical parameters of the pile during operation. By adopting the centralized control module 4, various parameters in the operation process of the system can be effectively monitored, the whole system can be conveniently automatically controlled to operate, and the safety and the efficiency of the operation of the system are improved.
Example 2:
the hydrogen supply method of the distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform comprises the following steps:
the method comprises the following steps: pre-sorting the collected original biomass wheat straws or urban kitchen garbage to remove the crushed stone impurities in the straws;
step two: adding the sorted biomass raw materials into a biomass pretreatment module 2, and performing pretreatment to obtain biomass slurry;
step three: mixing the biomass slurry and the anolyte in a certain proportion in an anode liquid storage tank for reaction, and converting the anolyte into an electroactive state;
step four: the power supply module 1 converts solar energy electricity or commercial power into direct current and then applies voltage to the cathode and anode electrodes of the electrolytic stack of the biomass direct electrolysis platform 3, and meanwhile, the cathode and anode pumps continuously circulate electrolyte;
step five: hydrogen is generated at the cathode side and purified and pressurized to a proper pressure by the hydrogen purification module 5 and the hydrogen pressurization module 6, and biomass at the anode side is dissolved and subjected to oxidative degradation reaction under the action of the anolyte and finally oxidized into CO 2 ；
Step six: when the electrode potential of the anolyte rises, the feedback of the centralized control module 4 is triggered, the material supplementing operation is carried out, the biomass raw material is added, and the continuous reaction is kept; simultaneously monitoring electrolyte water level and electrolyte liquid storage tank pressure parameters, and performing corresponding water supplement and pressure release operations when the parameters change;
step seven: the purified and pressurized hydrogen gas is supplied as a hydrogen energy source through the hydrogen supply module 9.
Claims (9)
1. A distributed hydrogen supply system constructed by a movable biomass direct electrolysis hydrogen production platform is characterized by comprising:
the power supply system comprises a power supply module (1), a power supply module and a control module, wherein the power supply module (1) is used for providing required electric energy for the operation of the whole system;
a biomass pre-treatment module (2), the biomass pre-treatment module (2) being configured to pre-treat a biomass feedstock;
the biomass direct electrolysis platform (3) is connected with the biomass pretreatment module (2) and is used for electrolyzing the pretreated biomass raw material to produce hydrogen; the biomass direct electrolysis platform (3) is connected with the power supply module (1);
the hydrogen purification module (5), the hydrogen purification module (5) is connected with the biomass direct electrolysis platform (3) and is used for purifying the prepared hydrogen;
the hydrogen pressurizing module (6), the hydrogen pressurizing module (6) is connected with the hydrogen purifying module (5) and is used for pressurizing hydrogen;
the hydrogen supply module (9), the hydrogen supply module (9) is connected with the hydrogen pressurization module (6) and is used for supplying hydrogen;
the biomass direct electrolysis system is characterized by further comprising a centralized control module (4), wherein the centralized control module (4) is connected with the power supply module (1), the biomass pretreatment module (2), the biomass direct electrolysis platform (3), the hydrogen purification module (5) and the hydrogen pressurization module (6) at the same time.
2. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1 is characterized in that: the power supply module (1) is provided with two sets of power supply components in total, wherein one set of power supply components is connected with a direct-current power supply interface (11) of the silicon solar electrode plate and is connected into a switch box (17) after passing through a rectifying transformer box (15);
the other set of power supply components are a first power supply interface (12) and a second power supply interface (13) which convert 220/380V alternating current to direct current, and are connected into a switch box (17) after passing through an alternating current-direct current conversion box (16);
an output port (14) is arranged on the switch box (17), and the output port (14) is connected with a module which needs power consumption by the system.
3. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 2 is characterized in that: the working voltage of the output port (14) is controlled to be 40-120V, and the current is controlled to be 80-250A;
when the output power of the silicon solar electrode plate is insufficient or is controlled by the centralized control module (4), the power supply module can switch between the interfaces of the two sets of power supply components.
4. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1, is characterized in that: the biomass pretreatment module (2) comprises a pretreatment box body, and the top of the pretreatment box body is provided with a biomass feeding port (7) and an exhaust port (8); a crusher (21) for crushing biomass raw materials is arranged in the pretreatment box body, a discharge port of the crusher (21) is connected with a mixing barrel (22), and an outlet of the mixing barrel (22) is connected with the biomass direct electrolysis platform (3);
the pulverizer (21) processes the biomass raw material into biomass particles of 100-300 meshes.
5. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1, is characterized in that: the biomass direct electrolysis platform (3) comprises an anode liquid storage tank (31), a cathode liquid storage tank (32), an anode pump (33), a cathode pump (34) and an electrolysis pile (35); the top of the anode liquid storage tank (31) is communicated with a mixing barrel (22) of the biomass pretreatment module (2), and the lower part of the anode liquid storage tank (31) is connected with an electrolytic pile (35) through an anode pump (33); the lower part of the cathode liquid storage tank (32) is connected with an electrolytic stack (35) through a cathode pump (34), and an air outlet at the top of the cathode liquid storage tank (32) is connected with a hydrogen purification module (5); the electrolytic stack (35) is connected with an output port (14) of the power supply module (1).
6. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 5, is characterized in that: the volume of the anode liquid storage tank (31) is 50-200L; the volume of the cathode liquid storage tank (32) is 30-100L; the anode pump (33) and the cathode pump (34) are corrosion-resistant diaphragm pumps, and the flow rate is 1-10L/min; the electrolytic stack (35) is composed of graphite bipolar plate and proton exchange membrane, the flow channel of the bipolar plate is filled with graphite felt to increase the electrolytic efficiency, wherein the anode plate is made of common graphite, and the cathode plate is plated with platinum catalyst with the dosage of 0.01-1g/m 2 The design power of the whole electrolytic stack is 5-10kW; the anode liquid storage tank (31) and the cathode liquid storage tank (32) are both corrosion-resistant glass-lined or enamel-lined reaction kettles, and a gas outlet is reserved.
7. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1 is characterized in that: the hydrogen purification module (5) comprises a hydrogen dehydration steam device for removing vapor in hydrogen, the air inlet of the hydrogen dehydration steam device is connected with the air outlet of the cathode liquid storage tank (32) of the biomass direct electrolysis platform (3), the condensed water of the hydrogen dehydration steam device returns to the cathode electrolyte through a water outlet (51), and the air outlet of the hydrogen dehydration steam device is connected with the hydrogen pressurization module (6).
8. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1, is characterized in that: the hydrogen pressurization module (6) comprises a two-stage hydrogen pressurization device, wherein one stage is a hydrogen pre-compression tank (61) to further remove moisture and impurities, and the two-stage compression increases the pressure of hydrogen to at least 35MPa and then enters a hydrogen storage tank (62);
the hydrogen storage tank (62) adopts a stainless steel inner container pressure device wound by high-strength carbon fibers, and is provided with a check valve (63) in front, and a hydrogen supply port (64) is connected with the hydrogen supply module (9) and directly supplies hydrogen energy.
9. The distributed hydrogen supply system constructed by the movable biomass direct electrolysis hydrogen production platform according to the claim 1 is characterized in that: the centralized control module (4) is a self-feedback system consisting of a temperature sensor, an electrode potential sensor, a water level sensor, a pressure sensor, a flow sensor, a voltage sensor and a current sensor;
the temperature sensors respectively detect the temperatures of the electrolytic stack, the cathode liquid storage tank and the anode liquid storage tank, and the temperature is controlled between 80 and 120 ℃;
an electrode potential sensor detects the electrode potential of the anolyte, the anode side electrode potential is between 0.2 to 0.6V Vs and HER, when the electrode potential rises to exceed 1.0V Vs and HER, a feeding device of biomass slurry is started, and biomass raw materials are added into an anode liquid storage tank;
the pressure sensors respectively monitor the pressure of the cathode liquid storage tank, the anode liquid storage tank and the hydrogen storage tank, and the hydrogen production system is powered off and stops working when the pressure exceeds a threshold value;
the flow sensor monitors the flow speed of the cathode electrolyte and the anode electrolyte;
the voltage and current sensors monitor the electrochemical parameters of the pile during operation.
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Address after: Room 166, L Zone, 1st Floor, Building 1, No. 6878 Beiqing Road, Zhonggu Town, Qingpu District, Shanghai, June 2017 Patentee after: Shanghai Ogni Hydrogen Technology Co.,Ltd. Country or region after: China Address before: 518000, Building F, Xihai Mingzhu Garden, No. 1 Taoyuan East Road, Dawangshan Community, Nantou Street, Nanshan District, Shenzhen, Guangdong Province, 1001A20 Patentee before: Shenzhen ogeni green Hydrogen Technology Co.,Ltd. Country or region before: China |