阅读说明：本技术 一种太阳能综合制氢系统及一种供能系统 (Solar comprehensive hydrogen production system and energy supply system ) 是由 王会 钟迪 黄永琪 彭烁 周贤 安航 白烨 于 2021-09-30 设计创作，主要内容包括：本发明公开了一种太阳能综合制氢系统,包括：光热系统,所述光热系统能够吸收太阳能的热量；储热系统,所述储热系统用于储存所述光热系统的热量；热化学制氢系统,所述储热系统能够向所述热化学制氢系统提供热量,以使所述热化学制氢系统发生反应制备氢气。本发明将不稳定的光能转化为了稳定的热能,通过稳定的热能和热化学制氢系统来制备氢气,如此便能够实现24小时持续制氢,从而确保氢气的连续产出。本发明建立光热/光伏耦合系统,实现电、热驱动的两种途径的综合制氢,从而提高了太阳能的利用率和氢能产出量。本发明还公开了一种供能系统,在该供能系统中,光伏系统和储氢系统相结合,可起到电力调峰和消纳的作用。(The invention discloses a solar comprehensive hydrogen production system, which comprises: a photothermal system capable of absorbing heat of solar energy; a thermal storage system for storing heat from the photothermal system; the heat storage system can provide heat for the thermochemical hydrogen production system so that the thermochemical hydrogen production system can react to produce hydrogen. The invention converts unstable light energy into stable heat energy, and prepares hydrogen through stable heat energy and a thermochemical hydrogen production system, thus realizing continuous hydrogen production for 24 hours and ensuring the continuous production of hydrogen. The invention establishes a photo-thermal/photovoltaic coupling system, realizes the comprehensive hydrogen production by two ways of electric drive and thermal drive, thereby improving the utilization rate of solar energy and the output of hydrogen energy. The invention also discloses an energy supply system, wherein the photovoltaic system and the hydrogen storage system are combined to play a role in peak regulation and consumption of electric power.)

1. A solar integrated hydrogen production system, comprising:

a photothermal system capable of absorbing heat of solar energy;

a thermal storage system for storing heat from the photothermal system;

the heat storage system can provide heat for the thermochemical hydrogen production system so that the thermochemical hydrogen production system can react to produce hydrogen.

2. The solar integrated hydrogen production system according to claim 1, further comprising a photovoltaic system and a water electrolysis hydrogen production system, wherein the photovoltaic system can convert solar energy into electric energy and transmit the electric energy to the water electrolysis hydrogen production system, so that the water electrolysis hydrogen production system produces hydrogen.

3. The solar integrated hydrogen production system according to claim 2, further comprising a hydrogen storage system, wherein the thermochemical hydrogen production system is in communication with the hydrogen storage system through a first hydrogen delivery conduit, and wherein the electrolyzed water hydrogen production system is in communication with the hydrogen storage system through a second hydrogen delivery conduit.

4. The solar integrated hydrogen production system of claim 1, wherein the photothermal system comprises a heat collector capable of absorbing heat from solar energy; the heat storage system includes a heat storage medium capable of storing heat.

5. The solar integrated hydrogen production system according to claim 4, wherein heat from the heat collector is transferred to the heat storage medium via a first heat exchanger, and heat from the heat storage medium is transferred to the thermochemical hydrogen production system via a second heat exchanger.

6. The solar integrated hydrogen production system of claim 1, wherein the thermochemical hydrogen production system comprises an ammonia decomposition hydrogen production system and a metal hydride decomposition hydrogen production system.

7. An energy supply system comprising a hydrogen production system, wherein the hydrogen production system is the solar integrated hydrogen production system of claim 3.

8. An energy supply system according to claim 7, further comprising a fuel cell, said hydrogen storage system being in communication with said fuel cell through a third hydrogen delivery conduit, said fuel cell being capable of supplying power to an electric power supply system; the photovoltaic system is capable of supplying power to the power supply system.

9. The energy supply system of claim 8, wherein the photothermal system is capable of providing heat to the heat supply system through a third heat exchanger, and the fuel cell is capable of providing heat to the heat supply system through a fourth heat exchanger.

10. The energy supply system of claim 7, further comprising a hydrogen refueling station, wherein the hydrogen storage system is capable of communicating with the hydrogen refueling station through a fourth hydrogen delivery conduit.

Technical Field

The invention relates to the technical field of hydrogen production, in particular to a solar comprehensive hydrogen production system and an energy supply system.

Background

The conventional hydrogen production technology is water electrolysis hydrogen production, a large amount of electric energy is consumed for water electrolysis hydrogen production, and the electric energy is directly supplied by a power grid, so that the water electrolysis hydrogen production cost is high. Solar energy is a clean and friendly renewable energy source, is widely distributed, and is inexhaustible. In recent years, researchers consider that hydrogen is prepared by electrolyzing water through photovoltaic power generation, and economic benefits can be improved. However, photovoltaic power generation is directly affected by seasons and weather, and the fluctuation of the photovoltaic power generation is large, so that the hydrogen production effect of electrolyzed water is affected, and the continuous production of hydrogen cannot be guaranteed.

Therefore, how to utilize solar energy to produce hydrogen and ensure continuous production of hydrogen is a critical issue to be urgently solved by those skilled in the art.

Disclosure of Invention

The invention aims to produce hydrogen by utilizing solar energy and simultaneously ensure the continuous production of hydrogen. In order to achieve the purpose, the invention provides the following technical scheme:

a solar integrated hydrogen production system comprising:

a photothermal system capable of absorbing heat of solar energy;

a thermal storage system for storing heat from the photothermal system;

the heat storage system can provide heat for the thermochemical hydrogen production system so that the thermochemical hydrogen production system can react to produce hydrogen.

Preferably, the system further comprises a photovoltaic system and a water electrolysis hydrogen production system, wherein the photovoltaic system can convert solar energy into electric energy, and the electric energy is transmitted to the water electrolysis hydrogen production system, so that the water electrolysis hydrogen production system produces hydrogen.

Preferably, the system further comprises a hydrogen storage system, wherein the thermochemical hydrogen production system is communicated with the hydrogen storage system through a first hydrogen conveying pipeline, and the electrolytic water hydrogen production system is communicated with the hydrogen storage system through a second hydrogen conveying pipeline.

Preferably, the photothermal system comprises a heat collector capable of absorbing heat of solar energy; the heat storage system includes a heat storage medium capable of storing heat.

Preferably, the heat of the heat collector is transferred to the heat storage medium through a first heat exchanger, and the heat of the heat storage medium is transferred to the thermochemical hydrogen production system through a second heat exchanger.

Preferably, the thermochemical hydrogen production system comprises an ammonia decomposition hydrogen production system and a metal hydride decomposition hydrogen production system.

The invention also provides an energy supply system which comprises a solar comprehensive hydrogen production system.

Preferably, the system further comprises a fuel cell, wherein the hydrogen storage system is communicated with the fuel cell through a third hydrogen conveying pipeline, and the fuel cell can supply power to the power supply system; the photovoltaic system is capable of supplying power to the power supply system.

Preferably, the photothermal system is capable of providing heat to the heat power supply system through a third heat exchanger, and the fuel cell is capable of providing heat to the heat power supply system through a fourth heat exchanger.

Preferably, the hydrogen storage system further comprises a hydrogen adding station, and the hydrogen storage system can be communicated with the hydrogen adding station through a fourth hydrogen conveying pipeline.

It can be seen from the above technical solution that: the solar comprehensive hydrogen production system and the energy supply system have the following beneficial effects:

firstly, the method comprises the following steps: the invention converts unstable light energy into stable heat energy, and prepares hydrogen through stable heat energy and a thermochemical hydrogen production system, thus realizing continuous hydrogen production for 24 hours and ensuring the continuous production of hydrogen.

Secondly, the method comprises the following steps: the invention establishes a photo-thermal/photovoltaic coupling system, realizes the comprehensive hydrogen production by two ways of electric drive and thermal drive, thereby improving the utilization rate of solar energy and the output of hydrogen energy.

Thirdly, the method comprises the following steps: when the sunlight is sufficient, the photovoltaic system is only relied on to supply power to the power supply system. And when the sunlight is insufficient or the electricity is used in a peak period, the fuel cell is started to supply power. The photovoltaic system and the hydrogen storage system are combined, and the effects of electric power peak regulation and absorption can be achieved.

Fourthly: 100% of heat, electricity and hydrogen energy produced by the invention come from solar energy, and the invention is clean, environment-friendly and high in economic benefit.

Drawings

In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.

FIG. 1 is a schematic diagram of a solar integrated hydrogen production system provided in accordance with an embodiment of the present invention;

fig. 2 is a schematic diagram of an energy supply system according to an embodiment of the present invention.

Wherein, 1 is a photo-thermal system, 2 is a photovoltaic system, 3 is a heat storage system, 4 is an ammonia decomposition hydrogen production system, 5 is a metal hydride decomposition hydrogen production system, 6 is an electrolytic water hydrogen production system, 7 is a hydrogen storage system, 8 is a fuel cell, 9 is a heat supply system, 10 is a hydrogen adding station, and 11 is an electric power supply system.

Detailed Description

The invention discloses a solar comprehensive hydrogen production system, which utilizes solar energy to produce hydrogen and can ensure continuous production of hydrogen. The invention also discloses an energy supply system.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The invention discloses a solar comprehensive hydrogen production system, which comprises: a photo-thermal system 1, a thermal storage system 3, and a thermochemical hydrogen production system. Wherein the photothermal system 1 is capable of absorbing heat of solar energy. The heat storage system 3 is used for storing the heat absorbed by the photothermal system 1. The heat storage system 3 can transfer the stored heat to the thermochemical hydrogen production system, so that the thermochemical hydrogen production system reacts to produce hydrogen.

It should be noted that the thermochemical hydrogen production system absorbs heat and then performs a chemical reaction to produce hydrogen. The thermochemical hydrogen production system comprises an ammonia decomposition hydrogen production system 4, a metal hydride decomposition hydrogen production system 5 and the like.

When sunlight is sufficient in the daytime, the heat storage system 3 stores the heat of the solar energy absorbed by the photo-thermal system 1 and can transfer the heat to the thermochemical hydrogen production system so that the thermochemical hydrogen production system can produce hydrogen; when sunlight is weak, the heat storage system 3 stores a large amount of heat, and the heat storage system 3 provides heat for the thermochemical hydrogen production system in a heat release manner. The invention converts unstable light energy into stable heat energy, and prepares hydrogen through stable heat energy and a thermochemical hydrogen production system, thus realizing continuous hydrogen production for 24 hours and ensuring the continuous production of hydrogen.

The invention also includes a photovoltaic system 2 and an electrolyzed water hydrogen production system 6. The photovoltaic system 2 can convert solar energy into electric energy and transmit the electric energy to the water electrolysis hydrogen production system 6, so that the water electrolysis hydrogen production system 6 produces hydrogen.

The invention can not only produce hydrogen through a thermochemical hydrogen production system, but also produce hydrogen through a water electrolysis hydrogen production system 6. The thermal hydrogen production system realizes hydrogen production by thermal driving. The water electrolysis hydrogen production system 6 realizes hydrogen production through electric driving. Namely, the invention establishes a photo-thermal/photovoltaic coupling system, realizes the comprehensive hydrogen production by two ways of electric drive and thermal drive, thereby improving the utilization rate of solar energy and the output of hydrogen energy.

The solar comprehensive hydrogen production system further comprises a hydrogen storage system 7, and the hydrogen storage system 7 is used for storing hydrogen. The hydrogen prepared by the thermochemical hydrogen production system and the electrolytic water hydrogen production system 6 enters the hydrogen storage system 7 and is output, so that the stability of hydrogen output can be ensured.

Specifically, the thermochemical hydrogen production system communicates with the hydrogen storage system 7 through a first hydrogen delivery conduit. The water electrolysis hydrogen production system 6 is communicated with the hydrogen storage system 7 through a second hydrogen conveying pipeline. If the thermochemical hydrogen production system comprises the ammonia decomposition hydrogen production system 4 and the metal hydride decomposition hydrogen production system 5, the ammonia decomposition hydrogen production system 4 is communicated with the hydrogen storage system 7 through a first hydrogen transmission pipeline, and the metal hydride decomposition hydrogen production system 5 is communicated with the hydrogen storage system 7 through a second hydrogen transmission pipeline.

The photothermal system 1 and the thermal storage system 3 will be described next: the photothermal system 1 includes a heat collector for absorbing heat of the sun. The heat storage system 3 includes a heat storage medium for storing heat.

The heat of the heat collector is transferred to the heat storage medium through the first heat exchanger, and the heat of the heat storage medium is transferred to the thermochemical hydrogen production system through the second heat exchanger. If the thermochemical hydrogen production system comprises the ammonia decomposition hydrogen production system 4 and the metal hydride decomposition hydrogen production system 5, the heat of the heat storage medium is transferred to the ammonia decomposition hydrogen production system 4 through the second first heat exchanger and is transferred to the metal hydride decomposition hydrogen production system 5 through the second heat exchanger.

The invention also discloses an energy supply system, which comprises the solar comprehensive hydrogen production system, and the solar comprehensive hydrogen production system comprises: the system comprises a photo-thermal system 1, a thermochemical hydrogen production system, a photovoltaic system 2, an electrolytic water hydrogen production system 6 and a hydrogen storage system 7. The above-mentioned advantages of the solar integrated hydrogen production system are provided, and the energy supply system having the above-mentioned solar integrated hydrogen production system also has the advantages described above, so that the details are not described herein.

The power supply system of the present invention further includes a fuel cell 8. The hydrogen storage system 7 is communicated with the fuel cell 8 through a third hydrogen delivery pipe. The fuel cell 8 is capable of supplying power to the power supply system 11. The photovoltaic system 2 in the present invention is also used to supply power to the power supply system 11.

When the sunlight is sufficient, the photovoltaic system 2 is relied only on to supply power to the power supply system 11. When the sunlight is insufficient or the electricity is in a peak period, the fuel cell 8 is started to supply power. The photovoltaic system 2 and the hydrogen storage system 7 are combined together, and the effects of electric power peak regulation and absorption can be achieved.

The energy supply system can supply electricity, heat and hydrogen. Regarding heat supply: the photothermal system 1 in the present invention can supply heat to the heat supply system 9 through the third heat exchanger, and the fuel cell 8 in the present invention can supply heat to the heat supply system 9 through the fourth heat exchanger.

With respect to hydrogen supply: the hydrogen storage system 7 is communicated with the hydrogen station 10 through a fourth hydrogen conveying pipeline, namely, the hydrogen storage system 7 supplies hydrogen to the hydrogen station 10 through the fourth hydrogen conveying pipeline.

In summary, the energy supply system of the invention has the following beneficial effects:

firstly, the method comprises the following steps: the invention converts unstable light energy into stable heat energy, and prepares hydrogen through stable heat energy and a thermochemical hydrogen production system, thus realizing continuous hydrogen production for 24 hours and ensuring the continuous production of hydrogen.

Secondly, the method comprises the following steps: the invention establishes a photo-thermal/photovoltaic coupling system, realizes the comprehensive hydrogen production by two ways of electric drive and thermal drive, thereby improving the utilization rate of solar energy and the output of hydrogen energy.

Thirdly, the method comprises the following steps: when the sunlight is sufficient, the photovoltaic system 2 is relied only on to supply power to the power supply system 11. When the sunlight is insufficient or the electricity is in a peak period, the fuel cell 8 is started to supply power. The photovoltaic system 2 and the hydrogen storage system 7 are combined together, and the effects of electric power peak regulation and absorption can be achieved.

Fourthly: 100% of heat, electricity and hydrogen energy produced by the invention come from solar energy, and the invention is clean, environment-friendly and high in economic benefit.

Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.