CN211056709U - Solar methanol steam reforming hydrogen production focusing reactor - Google Patents
Solar methanol steam reforming hydrogen production focusing reactor Download PDFInfo
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- CN211056709U CN211056709U CN201921656619.2U CN201921656619U CN211056709U CN 211056709 U CN211056709 U CN 211056709U CN 201921656619 U CN201921656619 U CN 201921656619U CN 211056709 U CN211056709 U CN 211056709U
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Abstract
The utility model relates to a solar methanol steam reforming hydrogen production focusing reactor, in particular to a solar linear focusing methanol steam reforming hydrogen production tubular reactor with a heat storage medium. The method comprises the following steps: the solar heat collector comprises an aluminum alloy inner tube, an aluminum alloy outer tube, a selective absorption coating, a transparent glass tube, a catalyst, a phase-change heat storage material, a vacuum interlayer, a sealing cover, a first parabolic trough surface, a second parabolic trough surface, a third parabolic trough surface, and a superheated steam mixture of methanol and water. The solar methanol steam reforming hydrogen production reactor can reach the temperature required by the methanol steam reforming hydrogen production thermochemical reaction with a small heat collection area, can overcome the defect that a catalyst near the wall surface of the reactor is inactivated due to overhigh temperature caused by instability of solar radiation, has good expansibility, can be used independently, and can also be connected in parallel with a plurality of reactors according to actual requirements to realize efficient, stable and green hydrogen production.
Description
Technical Field
The utility model relates to a solar methanol steam reforming hydrogen production focusing reactor, in particular to a solar linear focusing methanol steam reforming hydrogen production tubular reactor with a heat storage medium. Belongs to the technical field of hydrogen production by renewable energy sources.
Background
The development of renewable energy and its utilization techniques has become one of the important ways to alleviate the exhaustion of fossil energy and the deterioration of the environment. Hydrogen is considered one of the most important energy carriers for sustainable development due to its high energy content and no carbon emissions from its utilization. At present, 96% of the global hydrogen consumption is obtained from fossil fuels as raw materials and energy. Among all the reactions, steam reforming of methanol provides the highest hydrogen concentration and relatively little carbon monoxide. In addition, because of the advantages of wide range of methanol raw materials, low reforming temperature, high hydrogen-carbon ratio, safe storage and the like, the methanol steam reforming hydrogen production is considered to be a hydrogen production mode with great development potential. The combination of methanol steam reforming hydrogen production and renewable energy technology is a topic with important value and significance.
Solar energy is considered one of the most promising renewable energy sources due to its enormous reserves and cleanliness in the process of its exploitation and utilization. In recent years, the hydrogen production by reforming the solar methanol steam is more deeply researched. However, due to the low solar energy flux density, the solar methanol steam reforming hydrogen production reactor needs to be combined with a large area of solar heat collector to reach the temperature required by the thermochemical reaction of reforming hydrogen production, and due to the instability of solar radiation, the catalyst near the wall surface of the reactor is deactivated due to the high temperature. In order to avoid catalyst deactivation, most studies have been conducted to maintain the reactor at an appropriate temperature by controlling the feed flow rate of the methanol vapor mixture, which can alleviate the problem of catalyst deactivation, but increases the operation difficulty and makes it difficult to stably produce hydrogen.
In view of the above, it is necessary to provide a solar methanol steam reforming hydrogen production focusing reactor, which can reach the temperature required by the thermochemical reaction of methanol steam reforming hydrogen production with a small heat collection area, overcome the defect that the catalyst near the wall surface of the reactor is inactivated due to the overhigh temperature caused by the instability of solar radiation, has good expansibility, can be used alone, and can realize efficient stable green hydrogen production by connecting a plurality of reactors in parallel according to actual requirements.
Disclosure of Invention
The utility model aims to provide a solar methanol steam reforming hydrogen production focusing reactor. The solar methanol steam reforming hydrogen production reactor can reach the temperature required by the methanol steam reforming hydrogen production thermochemical reaction with a small heat collection area, can overcome the defect that a catalyst near the wall surface of the reactor is inactivated due to overhigh temperature caused by instability of solar radiation, has good expansibility, can be used independently, and can realize efficient stable green hydrogen production by connecting a plurality of reactors in parallel according to actual requirements.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a solar methanol steam reforming hydrogen production focusing reactor comprises: the solar heat collector comprises an aluminum alloy inner pipe, an aluminum alloy outer pipe, a selective absorption coating, a transparent glass pipe, a catalyst, a phase-change heat storage material, a vacuum interlayer, a sealing cover, a first parabolic trough surface, a second parabolic trough surface, a third parabolic trough surface, and a superheated steam mixture of methanol and water; the aluminum alloy inner pipe is arranged inside the aluminum alloy outer pipe, and the cross sections of the aluminum alloy inner pipe and the aluminum alloy outer pipe are concentric circles; a transparent glass tube which is concentric with the cross section of the aluminum alloy outer tube is arranged outside the aluminum alloy outer tube; the catalyst is arranged inside the aluminum alloy inner tube; the phase-change heat storage material is filled in a cylindrical cavity formed by an aluminum alloy inner tube and an aluminum alloy outer tube; the outer wall of the aluminum alloy outer pipe is provided with a selective absorption coating; the cavity formed by the aluminum alloy outer tube and the transparent glass tube is a vacuum interlayer; the sealing covers are arranged at two ends of the transparent glass tube and are connected with the transparent glass tube in a sealing way; the first parabolic trough surface, the second parabolic trough surface and the third parabolic trough surface are sequentially connected, and the focal axes of the first parabolic trough surface, the second parabolic trough surface and the third parabolic trough surface are coincided with the axis of the aluminum alloy inner pipe.
The diameter of the aluminum alloy inner pipe is smaller than that of the aluminum alloy outer pipe.
The diameter of the aluminum alloy outer tube is smaller than that of the transparent glass tube.
The catalyst is Cu/ZnO/Al 2O3。
The superheated steam mixture of methanol and water had a molar ratio of methanol to water vapor of 1: 1.
The phase-change heat storage material is metallic tin.
Compared with the prior art, the beneficial effects of the utility model are that:
1. The solar methanol steam reforming hydrogen production reactor has higher light condensation ratio, and can reach the temperature required by the thermochemical reaction of methanol steam reforming hydrogen production with smaller heat collection area; the reactor has better expansibility, can be used independently, and can also be used for connecting a plurality of reactors in parallel according to actual requirements;
2. The solar methanol steam reforming hydrogen production reactor can overcome the defect that the catalyst near the wall surface of the reactor is inactivated due to overhigh temperature caused by unstable solar radiation, and realizes green, stable and efficient hydrogen production.
Drawings
FIG. 1 is a schematic view of a solar methanol steam reforming hydrogen production focusing reactor of the utility model
FIG. 2 is a schematic diagram of the cross section of the reactor of the solar methanol steam reforming hydrogen production focusing reactor of the present invention
FIG. 3 is a schematic view of the cross section of a light-gathering paraboloid of a solar methanol steam reforming hydrogen production focusing reactor of the present invention
In the figure: 1-an aluminum alloy inner tube; 2-an aluminum alloy outer tube; 3-a selective absorbing coating; 4-a transparent glass tube; 5-a catalyst; 6-phase change heat storage material; 7-vacuum interlayer; 8-sealing cover; 9-a first parabolic trough surface; 10-a second parabolic trough surface; 11-a third parabolic trough surface; 12-methanol and water.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Referring now to fig. 1 to 3, it is a schematic diagram of a solar methanol steam reforming hydrogen production focusing reactor, a cross section of the reactor, and a cross section of a light-gathering paraboloid of the reactor of the present invention, including: the solar heat collector comprises an aluminum alloy inner tube (1), an aluminum alloy outer tube (2), a selective absorption coating (3), a transparent glass tube (4), a catalyst (5), a phase-change heat storage material (6), a vacuum interlayer (7), a sealing cover (8), a first parabolic trough surface (9), a second parabolic trough surface (10), a third parabolic trough surface (11) and a superheated steam mixture (12) of methanol and water; the aluminum alloy inner pipe (1) is arranged inside the aluminum alloy outer pipe (2), and the cross sections of the aluminum alloy inner pipe (1) and the aluminum alloy outer pipe (2) are concentric circles; a transparent glass tube (4) which is concentric with the cross section of the aluminum alloy outer tube (2) is arranged outside the aluminum alloy outer tube (2); the catalyst (5) is arranged in the aluminum alloy inner tube (1); the phase-change heat storage material (6) is filled in a cylindrical cavity formed by the aluminum alloy inner tube (1) and the aluminum alloy outer tube (2); a cavity formed by the aluminum alloy outer tube (2) and the transparent glass tube (4) is a vacuum interlayer (7); the outer wall of the aluminum alloy outer pipe (2) is provided with a selective absorption coating (3); the sealing covers (8) are arranged at two ends of the transparent glass tube (4) and are connected with the transparent glass tube (4) in a sealing way; the first parabolic trough surface (9), the second parabolic trough surface (10) and the third parabolic trough surface (11) are connected in sequence, and the focal axes of the first parabolic trough surface (9), the second parabolic trough surface (10) and the third parabolic trough surface (11) are coincident with the axis of the aluminum alloy inner pipe (1).
The diameter of the aluminum alloy inner pipe (1) is smaller than that of the aluminum alloy outer pipe (2).
The diameter of the aluminum alloy outer tube (2) is smaller than that of the transparent glass tube (4).
The catalyst (5) is Cu/ZnO/Al 2O3。
The superheated steam mixture of methanol and water (12) has a molar ratio of methanol to water vapor of 1: 1.
The phase-change heat storage material (6) is metal tin.
The solar methanol steam reforming hydrogen production focusing reactor of the present invention will be further described by the following specific examples: in the morning, when sunlight irradiates on a compound paraboloid consisting of a first parabolic trough surface, a second parabolic trough surface and a third parabolic trough surface, the sunlight irradiates on the pipe wall of the aluminum alloy outer pipe through the transparent glass pipe after being reflected, and is absorbed by the pipe wall of the aluminum alloy outer pipe, so that the solar energy is converted into heat energy. The heat absorbed by the aluminum alloy outer tube is absorbed by the phase-change heat storage material, the aluminum alloy inner tube and the catalyst arranged in the aluminum alloy inner tube through heat transfer. Meanwhile, the heat loss of absorbed heat to the surrounding environment is reduced by the vacuum interlayer between the transparent glass tube and the aluminum alloy outer tube, along with the continuous enhancement of solar radiation, more and more solar energy is converted into heat energy, the heat energy is absorbed and stored by the phase change energy storage material, meanwhile, the heat energy is also absorbed by the aluminum alloy inner tube and the catalyst arranged in the aluminum alloy inner tube, the temperature is continuously increased, when the temperature of the methanol-water vapor reforming reaction is reached, a superheated steam mixture of methanol and water with the molar ratio of 1:1 is introduced into the aluminum alloy inner tube, the methanol-water vapor reforming reaction is carried out to generate hydrogen, the process is continued until the afternoon, when the solar radiation is weakened and disappears, the sunlight irradiating the composite paraboloid consisting of the first parabolic groove surface, the second parabolic groove surface and the third parabolic groove surface is weaker, and the heat received by the reactor is less and less, when the temperature of the reactor is not enough to meet the temperature required by the methanol steam reforming reaction, the introduction of the superheated steam mixture of methanol and water with the molar ratio of 1:1 into the aluminum alloy inner tube is stopped, and the reaction is finished.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and although the present invention has been disclosed with preferred embodiments, but not limited to the present invention, any skilled person familiar with the art can make some changes or modifications to equivalent embodiments, but all do not depart from the technical solution of the present invention.
Claims (6)
1. A solar methanol steam reforming hydrogen production focusing reactor comprises: the solar heat collector comprises an aluminum alloy inner pipe, an aluminum alloy outer pipe, a selective absorption coating, a transparent glass pipe, a catalyst, a phase-change heat storage material, a vacuum interlayer, a sealing cover, a first parabolic trough surface, a second parabolic trough surface, a third parabolic trough surface, and a superheated steam mixture of methanol and water; the aluminum alloy inner pipe is arranged inside the aluminum alloy outer pipe, and the cross sections of the aluminum alloy inner pipe and the aluminum alloy outer pipe are concentric circles; a transparent glass tube which is concentric with the cross section of the aluminum alloy outer tube is arranged outside the aluminum alloy outer tube; the catalyst is arranged inside the aluminum alloy inner tube; the phase-change heat storage material is filled in a cylindrical cavity formed by an aluminum alloy inner tube and an aluminum alloy outer tube; the outer wall of the aluminum alloy outer pipe is provided with a selective absorption coating; the cavity formed by the aluminum alloy outer tube and the transparent glass tube is a vacuum interlayer; the sealing covers are arranged at two ends of the transparent glass tube and are connected with the transparent glass tube in a sealing way; the first parabolic trough surface, the second parabolic trough surface and the third parabolic trough surface are sequentially connected, and the focal axes of the first parabolic trough surface, the second parabolic trough surface and the third parabolic trough surface are coincided with the axis of the aluminum alloy inner pipe.
2. The solar methanol steam reforming hydrogen production focusing reactor as claimed in claim 1, characterized in that: the diameter of the aluminum alloy inner pipe is smaller than that of the aluminum alloy outer pipe.
3. The solar methanol steam reforming hydrogen production focusing reactor as claimed in claim 1, characterized in that: the diameter of the aluminum alloy outer tube is smaller than that of the transparent glass tube.
4. The solar methanol steam reforming hydrogen production focusing reactor as claimed in claim 1, characterized in that: said catalysis The agent is Cu/ZnO/Al 2O3。
5. The solar methanol steam reforming hydrogen production focusing reactor as claimed in claim 1, characterized in that: the superheated steam mixture of methanol and water had a molar ratio of methanol to water vapor of 1: 1.
6. The solar methanol steam reforming hydrogen production focusing reactor as claimed in claim 1, characterized in that: the phase-change heat storage material is metallic tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921656619.2U CN211056709U (en) | 2019-09-30 | 2019-09-30 | Solar methanol steam reforming hydrogen production focusing reactor |
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| CN201921656619.2U CN211056709U (en) | 2019-09-30 | 2019-09-30 | Solar methanol steam reforming hydrogen production focusing reactor |
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| CN211056709U true CN211056709U (en) | 2020-07-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124575A (en) * | 2021-04-01 | 2021-07-16 | 西安交通大学 | Parabolic trough type baffling type integrated photo-thermal synergistic reaction device |
| CN113354062A (en) * | 2021-06-28 | 2021-09-07 | 重庆大学 | System for photo-thermal synergetic hydrogen production and wastewater treatment by utilizing full-spectrum solar energy |
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2019
- 2019-09-30 CN CN201921656619.2U patent/CN211056709U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124575A (en) * | 2021-04-01 | 2021-07-16 | 西安交通大学 | Parabolic trough type baffling type integrated photo-thermal synergistic reaction device |
| CN113354062A (en) * | 2021-06-28 | 2021-09-07 | 重庆大学 | System for photo-thermal synergetic hydrogen production and wastewater treatment by utilizing full-spectrum solar energy |
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