WO2020206882A1 - 一种基于光催化剂自分频的太阳能光热耦合制氢装置 - Google Patents
一种基于光催化剂自分频的太阳能光热耦合制氢装置 Download PDFInfo
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- WO2020206882A1 WO2020206882A1 PCT/CN2019/098661 CN2019098661W WO2020206882A1 WO 2020206882 A1 WO2020206882 A1 WO 2020206882A1 CN 2019098661 W CN2019098661 W CN 2019098661W WO 2020206882 A1 WO2020206882 A1 WO 2020206882A1
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- hydrogen production
- frequency division
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- 238000005859 coupling reaction Methods 0.000 title claims abstract description 48
- 230000008878 coupling Effects 0.000 title claims abstract description 31
- 238000010168 coupling process Methods 0.000 title claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000001257 hydrogen Substances 0.000 title claims abstract description 30
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims description 11
- 238000011056 performance test Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 35
- 238000006243 chemical reaction Methods 0.000 description 17
- 230000006872 improvement Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003426 co-catalyst Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/127—Sunlight; Visible light
-
- 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
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Definitions
- the invention belongs to the technical field of new energy preparation, and in particular relates to a solar photothermal coupling hydrogen production device based on a photocatalyst self-frequency division.
- the solar photothermal coupling hydrogen production method based on the self-frequency division of photocatalyst is one of the efficient, low-cost, clean and pollution-free hydrogen production paths that we have proposed. Effectively ease the pressure on the construction of domestic hydrogen refueling stations.
- the traditional photocatalytic water splitting is when sunlight is irradiated on the semiconductor material, the photons with energy higher than the semiconductor forbidden band width are absorbed by the semiconductor, and the electrons located in the semiconductor valence band are excited to transition to the conduction band and form at the valence band. Holes are called photo-generated electrons (e-) and photo-generated holes (h+), respectively. Photogenerated electrons and photogenerated holes can be used to reduce water and oxidize water to generate H2 and O2, respectively.
- the purpose of the present invention is to provide a solar photothermal coupling hydrogen production device based on the photocatalyst self-frequency division, which is used to evaluate the hydrogen production performance of a series of photothermal coupling catalysts.
- the device has the advantages of simplicity, convenience, cleanliness and environmental protection. .
- a solar energy photothermal coupling hydrogen production device based on photocatalyst self-frequency division, comprising several reflectors, arc-shaped secondary reflection devices, and a heat-absorbing fluid layer, a photothermal coupling reaction layer and a vacuum layer arranged in sequence from the inside to the outside; among them,
- Several reflecting mirrors are arranged side by side under the vacuum layer, and the opening direction of the arc-shaped secondary reflection device is downward and arranged above the vacuum layer; while the photothermal coupling reaction is proceeding, the test catalyst sample is placed in the photothermal coupling reactor, The reflector collects the light source and reflects it, and part of it is directly absorbed by the heat-absorbing fluid layer, and some is reflected by the arc-shaped secondary reflection device and further reflects the light source to the heat-absorbing fluid layer for absorption.
- the vacuum layer is wrapped around the photothermal coupling reaction layer to prevent Convection heat loss with air.
- a further improvement of the present invention is that the reflector adopts a linear Fresnel reflector, and its reflecting surface can be rotated according to different directions of solar radiation.
- test catalyst sample is placed inside the photothermal coupling reaction layer in the middle of the sandwich cylinder, and the two sides of the sandwich are sealed at both ends.
- a further improvement of the present invention is that the whole device is symmetrical with the central axis.
- a further improvement of the present invention is that the light source is solar radiation that irradiates the surface of the earth throughout the year.
- a further improvement of the present invention is that the catalyst in the test catalyst sample in the test catalyst sample can transmit the infrared light part of the solar radiation light and absorb the ultraviolet light and visible light part thereof.
- the present invention aims to provide a safe and feasible test device for coupling light and heat physical fields for the novel photothermal coupling catalyst, and provide a reaction place for further research on the coupling mechanism of the photothermal catalyst.
- the present invention places the test catalyst sample in the photothermal coupling reactor, the reflector collects the light source and reflects it, partly absorbed by the heat-absorbing fluid layer, and partly reflected by the arc-shaped secondary reflecting device The light source is further reflected to the endothermic fluid layer for absorption, the vacuum layer is wrapped around the light-heat coupling reaction layer to prevent convective heat loss with the air, and the endothermic fluid layer is placed in the innermost layer of the entire interlayer of the reactor.
- the present invention adjusts the light absorption characteristics of the catalyst by adding a co-catalyst during the preparation process of the catalyst, accurately absorbs the ultraviolet light or visible light of a specific frequency and filters out the infrared light region of the specific frequency, and then reduces the infrared light. Part of the carried heat is transferred to the reaction device through the endothermic fluid medium to experiment with the purpose of light-heat coupling hydrogen production.
- the tested catalyst sample is placed inside the photothermal coupling reaction layer in the middle of the sandwich cylinder, and both ends of the sandwich layer are sealed.
- the reaction fluid layer is surrounded by a uniform and stable endothermic fluid layer, which can prevent the problem of test errors caused by partial overheating of the reactor.
- linear Fresnel mirrors are placed side by side directly below the entire photothermal coupling hydrogen production device.
- the linear Fresnel reflector collects solar radiation light and reflects it to the whole part of the interlayer of the reactor and the arc-shaped secondary reflector.
- the arc-shaped secondary reflection device further reflects the solar radiation light above the whole part of the interlayer of the reactor to ensure a higher utilization rate of sunlight.
- a low-cost linear Fresnel reflector condenser is used to reduce the production cost.
- the entire reaction device is symmetrical on the central axis and has a stable structure.
- the light source is sunlight that illuminates the surface of the earth throughout the year. It has the advantages of low cost, high efficiency and environmental protection.
- the present invention cleverly based on the selective frequency division characteristics of the catalyst itself, the ultraviolet light partly penetrates the vacuum layer and directly irradiates the surface of the catalyst to induce the semiconductor to perform photocatalytic reaction, and the infrared light part passes through the reaction vacuum layer and the photothermal coupling In the reaction layer, the heat carried by it is absorbed by the heat-absorbing fluid layer, and then the heat is supplied to the photothermal reaction layer in the reverse direction to achieve the purpose of photothermal coupling.
- the invention is clean and environmentally friendly, simple and easy to implement, and can be stably used in the hydrogen production performance test of the photothermal coupling catalyst with the self-frequency division effect.
- Figure 1 is a schematic diagram of the device of the present invention.
- Linear Fresnel reflector 2. Vacuum layer, 3. Light-heat coupling reaction layer, 4. Heat-absorbing fluid layer, 5. Arc-shaped secondary reflecting device, 6. Light source.
- the present invention provides a solar photothermal coupling hydrogen production device based on photocatalyst self-frequency division, which includes a linear Fresnel reflector 1, a vacuum layer 2, a photothermal coupling reaction layer 3, and an endothermic fluid layer 4.
- the entire catalyst evaluation process mainly includes: firstly, a catalyst with self-frequency division characteristics obtained through precise control methods such as co-catalysts is required, and then the catalyst and the reaction fluid are evenly mixed and placed on the photothermal coupling reaction layer 3, linear Fresnel mirror 1 Reflect the reflected solar radiation light to the interlayer part of the reactor.
- the ultraviolet light area and part of the visible light of the solar radiation light part are absorbed by the catalyst in the reaction fluid layer and then projected to the light-absorbing fluid layer to transfer heat to the endothermic fluid for conversion.
- the heat energy is used to reversely heat the reactor to realize the quantitative coupling of the two physical fields of light and heat.
- the direction of the linear Fresnel reflector 1 can be adjusted according to the specific direction at the time to ensure that the reflected solar radiation is aligned with the entire reactor device.
- the prerequisite for the operation of the reaction device is mainly based on the self-frequency dividing characteristics of the prepared catalyst, so it is only necessary to figure out the light absorption characteristics of the catalyst before the reaction to obtain the ratio of light/heat units absorbed by the reactor. It is convenient to realize the quantitative input of light and heat in the photothermal reaction, so as to further explore the mechanism of photothermal coupling.
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Electromagnetism (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
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- Inorganic Chemistry (AREA)
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Abstract
Description
Claims (6)
- 一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,包括若干反射镜、圆弧形二次反射器件(5)以及由内至外依次设置的吸热流体层(4)、光热耦合反应层(3)和真空层(2);其中,若干反射镜并排设置在真空层(2)的下方,圆弧形二次反射器件(5)的开口方向朝下并设置在真空层(2)上方;在光热耦合反应进行时,测试催化剂样品放置在光热耦合反应器内,反射镜收集光源(6)后反射,部分通过吸热流体层(4)直接吸收,部分通过圆弧形二次反射器件(5)反射后进一步将光源(6)反射至吸热流体层(4)吸收,真空层(2)包裹在光热耦合反应层(3)外围进而防止与空气的对流热损。
- 根据权利要求1所述的一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,反射镜采用线性菲涅尔反射镜(1),且其反射面能够根据太阳辐射光的不同方位来进行旋转。
- 根据权利要求1所述的一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,测试催化剂样品放置在夹层式圆筒中间的光热耦合反应层(3)内部,两边夹层两端有封口。
- 根据权利要求1所述的一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,该装置整体呈中心轴对称。
- 根据权利要求1所述的一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,光源(6)为一年四季照射到地球表面的太阳辐射光。
- 根据权利要求5所述的一种基于光催化剂自分频的太阳能光热耦合制氢装置,其特征在于,测试催化剂样品中测试催化剂样品中的催化剂能够让太阳辐射光中的红外光部分透过,吸收其中的紫外光和可见光部分。
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CN112844422A (zh) * | 2021-02-03 | 2021-05-28 | 西北工业大学深圳研究院 | 一种海水制氢的气/固两相界面光催化体系及制备使用方法 |
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CN114768717B (zh) * | 2022-04-15 | 2024-01-30 | 中国科学院电工研究所 | 一种基于分光谱的太阳能光热协同催化制气装置 |
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