CN213314911U - High light energy utilization rate photocatalytic reactor - Google Patents
High light energy utilization rate photocatalytic reactor Download PDFInfo
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- CN213314911U CN213314911U CN202021321779.4U CN202021321779U CN213314911U CN 213314911 U CN213314911 U CN 213314911U CN 202021321779 U CN202021321779 U CN 202021321779U CN 213314911 U CN213314911 U CN 213314911U
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Abstract
The utility model relates to the technical field of a photocatalytic reactor device, in particular to a photocatalytic reactor with high light energy utilization rate, which comprises a light source and a reaction container arranged above the light source, wherein the upper side of the reaction container is set to be transparent, the reaction container is divided into a gas phase part and a liquid phase part from top to bottom, the reaction container is provided with a gas inlet channel extending from the outer side to the liquid phase part, and the gas phase part is provided with a gas outlet channel; the outer side of the reaction vessel is wrapped with a metal silver layer. It can be used for photocatalysis of CO2Hydrogenation reaction and photolysis water to produce hydrogen. The utility model discloses a light source direct irradiation is to reaction vessel in, its simple structure, and easily control gas tightness reduces the use of glass instrument, reduces the scattering for in the aquatic products hydrogen reaction of photodissociationAnd the method is more suitable for industrial production without vacuum environment.
Description
Technical Field
The utility model relates to a photocatalytic reactor device technical field especially relates to a high light energy utilization rate photocatalytic reactor.
Background
Since 1972, academicians Fujishima and Honda in the n-type semiconductor TiO2Since the photoelectrocatalysis decomposition of water is found on a single crystal electrode to prepare hydrogen, the multiphase photocatalysis technology attracts great attention of technologists. However, the efficiency of the current photocatalytic reaction is low and can only reach the level of low yield in a laboratory.
The photocatalytic reaction can simulate photosynthesis by utilizing light energy, and converts solar energy into chemical energy in other forms, and is an effective way for solving the energy crisis and the environmental crisis at present. However, the efficiency of the photocatalytic reaction is still low, and the photocatalytic reaction needs to be studied under laboratory conditions. The appropriate photocatalytic reactor has important significance for researching photocatalytic reaction.
The existing photocatalytic reactors, such as a photolysis water reactor, require the photolysis water reaction to be performed in a vacuum state, and the device is easy to leak gas and has poor air tightness. Meanwhile, the reaction device has larger volume, more various glass fittings, troublesome operation and easy breakage. For a common photocatalytic organic matter degradation bottle, the reaction volume is small, the degradation capability is limited, and meanwhile, the light energy utilization rate is low due to the reflection and transmission of light.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a high light energy utilization rate photocatalysis reactor, it has solved the technical problem that the photoreaction efficiency is low that glass reflection and scattering lead to in the reactor, its convenient operation, gas tightness are good, light utilization rate is high.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a high light energy utilization rate photocatalytic reactor comprises a light source and a reaction container arranged above the light source, wherein the upper side of the reaction container is transparent, the reaction container is divided into a gas phase part and a liquid phase part from top to bottom, the reaction container is provided with a gas inlet channel extending from the outer side to the liquid phase part, and the gas phase part is provided with a gas outlet channel; the outer side of the reaction vessel is wrapped with a metal silver layer.
Optionally, the reaction vessel is provided with a gas phase sampling port in the gas phase portion, a liquid phase sampling port in the liquid phase portion, and the gas phase sampling port and the liquid phase sampling port are respectively provided with a sealing member.
Optionally, the upper side of the reaction container is provided with an opening, and a quartz plate is arranged at the opening.
Optionally, a rubber ring is arranged on the contact surface of the quartz plate and the reaction vessel.
Optionally, the reaction vessel is provided with a condensed water interlayer outside the metal silver layer, and the condensed water interlayer is provided with a water inlet and a water outlet.
Optionally, the water inlet is arranged at a position corresponding to the lower end of the liquid phase part, and the water outlet is arranged at a position corresponding to the lower end of the liquid phase part.
Optionally, a cut-off filter is arranged below the light source, and light of the light source reaches the reaction container through the cut-off filter.
Optionally, a magneton is placed within the reaction vessel.
The utility model discloses still provide arbitrary high light energy utilization rate photocatalytic reactor of aforesaid at photocatalysis CO2Application in hydrogenation reaction.
The utility model discloses still provide the application of arbitrary high light energy utilization rate photocatalytic reactor in the hydrogen is produced to photodissociation water of aforesaid.
(III) advantageous effects
The utility model has the advantages that:
1. the utility model discloses a high light energy utilization ratio photocatalysis reactor, it passes through in the light source direct irradiation to reaction vessel, its simple structure, easily control the gas tightness reduces glass instrument's use, reduces the scattering for in the hydrogen reaction of photolysis water production, need not under the vacuum environment again, more be suitable for industrial production.
The metal silver layer is arranged on the outer side of the reaction container and used for reflecting light and preventing the light from transmitting, so that the utilization rate of light energy is improved.
2. Compare with traditional photodissociation water hydrogen production device, the utility model discloses can be through letting in other inert gas, carry out the reaction of photodissociation aquatic products hydrogen under the ordinary pressure, easy operation, the device volume is littleer.
3. The utility model can be used for photocatalysis CO2Hydrogenation by subjecting the reaction apparatus to CO2And gas replacement can be carried out, and the gas phase and liquid phase products can be conveniently sampled and detected.
4. The utility model discloses compare with traditional photocatalysis organic matter degradation bottle, the reaction vessel volume can set up bigger. Meanwhile, light rays are irradiated from the upper end of the reaction container, and the circular light spots can more effectively pass through the circular light ray incident port of the reactor, so that the utilization rate of light energy is improved.
Drawings
FIG. 1 is a schematic structural view of a high light energy utilization rate photocatalytic reactor of the present invention;
[ description of reference ]
1: a light source; 11: a cut-off filter;
2: a quartz plate;
3: a rubber ring;
4: a reaction vessel; 41: a gas phase section; 42: a liquid phase section; 43: an air intake passage; 44: an air outlet channel; 45: a gas phase sampling port; 46: a liquid phase sampling port; 47 a first on-off valve; 48 a second on-off valve;
5: a condensed water interlayer; 51: a water inlet; 52: a water outlet;
6: and (4) magnetons.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 1.
The embodiment of the utility model provides a high light energy utilization ratio photocatalysis reactor, it includes light source 1 and sets up the reaction vessel 4 above light source 1, and 4 upside of reaction vessel are set to be the printing opacity, and reaction vessel 4 from the top down divide into gaseous phase portion 41 and liquid phase portion 42, is equipped with the inlet channel 43 that extends to liquid phase portion 42 from the outside on reaction vessel 4, is equipped with outlet channel 44 in gaseous phase portion 41; the outer side of the reaction vessel 4 is wrapped with a metal silver layer. The device solves the technical problem of low photoreaction efficiency caused by glass reflection and scattering in the reactor, and has the advantages of convenient operation, good air tightness and high light utilization rate.
The light source 1 is preferably a 300W xenon lamp light source 1.
Wherein, the metal silver layer is wrapped at the corresponding part of the reaction liquid in the reaction vessel 4, so that the side part and the bottom part can be formed.
The material of the reaction vessel 4 is quartz.
In order to facilitate the sampling and detection of the gas phase and liquid phase products, the reaction vessel 4 is provided with a gas phase sampling port 45 in the gas phase portion 41, a liquid phase sampling port 46 in the liquid phase portion 42, and the gas phase sampling port 45 and the liquid phase sampling port 46 are respectively provided with a sealing member. Wherein, the sealing element can be a rubber pad.
The utility model can be used for photocatalysis CO2The hydrogenation reaction can be carried out by introducing CO through the gas inlet channel 43 and the gas outlet channel 442And hydrogen gas was used for the reaction, and sampling was performed at the gas sampling port 45 and the liquid sampling port 46 using sampling needles and the contents of each component in the gas and the liquid therein were analyzed by gas chromatography and liquid chromatography, respectively, to monitor the progress of the reaction.
Wherein, the inlet passage 43 and the outlet passage 44 are respectively provided with a first switch valve 47 and a second switch valve 48. When in use, the air inlet and outlet are controlled through the first switch valve 47 and the second switch valve 48. The inlet channel 43 and the outlet channel 44 are quartz tubes.
In order to facilitate the introduction of a reactant such as a catalyst, an opening is provided on the upper side of the reaction vessel 4, and a quartz plate 2 is provided at the opening. The quartz plate 2 serves as the light source 1 inlet.
In order to improve the air tightness, a rubber ring is arranged on the contact surface of the quartz plate 2 and the reaction vessel 4. The quartz plate 2 and the reaction vessel 4 are fixedly clamped by a clamp.
In order to control the temperature of the reaction vessel 4, a condensed water interlayer 5 is arranged on the outer side of the metal silver layer of the reaction vessel 4, and the condensed water interlayer 5 is provided with a water inlet 51 and a water outlet 52. The reaction temperature is controlled by exchanging with the outside water through the water outlet 52 and the water inlet 51.
To improve the efficiency of water temperature control, the water inlet 51 is disposed below the water outlet 52. The water inlet 51 is preferably provided at the bottom of the reaction vessel 4, and the position of the water inlet 51 is preferably provided above the liquid surface of the reaction liquid in the reaction vessel 4.
In order to control the wavelength of the incident light to the reaction vessel 4, a cut-off filter 11 is provided below the light source 1, and the light from the light source 1 passes through the cut-off filter 11 to reach the reaction vessel 4.
In order to facilitate stirring, a magneton 6 is placed in the reaction vessel 4. Although the utility model discloses reaction vessel 4's the outside is equipped with metallic silver layer and comdenstion water intermediate layer 5, does not influence the effect of magnetic stirrers to magneton 6 in reaction vessel 4, carries out magnetic stirring in reaction sequence.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
As shown in fig. 1, the photocatalytic reactor with high light energy utilization rate comprises a light source 1, a cut-off filter 11 and a quartz reaction vessel 4 which are arranged from top to bottom in sequence, wherein the upper side of the reaction vessel 4 is provided with an opening, a quartz plate 2 is arranged at the opening, and a rubber ring is arranged on the contact surface of the quartz plate 2 and the reaction vessel 4; the reaction vessel 4 is divided into a gas phase portion 41 and a liquid phase portion 42 from top to bottom; the reaction vessel 4 is provided with a gas inlet channel 43 extending from the outside to the liquid phase portion 42 and a gas outlet channel 44 arranged in the gas phase portion 41, the gas outlet channel 44 and the gas inlet channel 43 are both quartz tubes, and the gas inlet channel 43 and the gas outlet channel 44 are respectively provided with a first switch valve 47 and a second switch valve 48. The reaction vessel 4 is provided with a liquid phase sampling port 46 at the liquid phase part 42, a gas phase sampling port 45 at the gas phase part 41, and rubber gaskets are respectively arranged at the gas phase sampling port 45 and the liquid phase sampling port 46 for sealing; the reaction vessel 4 is provided with a condensed water interlayer 5 at the outer side of the liquid phase part 42, and a silver outer layer is plated on the contact surface of the liquid phase part 42 and the condensed water interlayer 5; the condensed water interlayer 5 is provided with a water inlet 51 and a water outlet 52. The water inlet 51 is disposed at a position corresponding to a lower end of the liquid phase portion 42, and the water outlet 52 is disposed at a position corresponding to a lower end of the liquid phase portion 42. The water inlet 51 is preferably provided at the bottom of the reaction vessel 4, and the position of the water inlet 51 is preferably provided above the liquid surface of the reaction liquid in the reaction vessel 4. The reaction vessel 4 contains magnetons 6.
Example 2
The utility model discloses be applied to the method of the hydrogen reaction of photodissociation water does:
the reaction solution and the catalyst are respectively placed in a reaction vessel 4 and are placed on a magnetic stirrer for dispersion. The quartz plate 2 and the rubber ring 3 are placed on the reaction vessel 4, and a clamp for clamping and fixing the quartz plate 2 and the reaction vessel 4 is clamped to prevent the apparatus from leaking gas. The two ends of the water inlet and the water outlet of the circulating condensate water device are respectively connected with the water inlet 51 and the water outlet 52 of the utility model to control the temperature of the reaction part. The gas inlet passage 43 is connected to an Ar gas cylinder, the first switch valve 47 and the second switch valve 48 are respectively opened, air in the reaction container is replaced by Ar gas after ventilation for 30min, and then the first switch valve 47 and the second switch valve 48 are respectively closed to isolate the reaction container from the surrounding environment. The position of the lamp source is adjusted so that light can be irradiated into the reaction vessel vertically through the quartz plate 2. After the reaction was carried out for a while, a gas sample of a certain volume was taken from the gas sampling port 45 with a sampling needle, and H therein was analyzed by gas chromatography2The content of (a).
Example 3
The utility model discloses be applied to at the method of photocatalysis organic matter degradation reaction and do:
the structure shown in figure 1 is removed from the quartz plate 2 and the rubber ring 3, and the prepared organic solution and the catalyst are placed in a reaction vessel and adsorbed for 1 hour under the stirring state and the dark condition. The liquid phase sample is sampled from the liquid phase sampling port 46, centrifuged, and the absorbance of the liquid sample is measured. And (3) irradiating the reaction device with light, taking liquid samples at certain intervals, and testing the absorbance of the liquid samples.
Example 4
The utility model discloses be applied to photocatalysis CO2The reduction reaction method comprises the following steps:
the reaction solution and the catalyst were placed in a reaction vessel 4 and dispersed on a magnetic stirrer. The quartz plate 2 and the rubber ring 3 were placed on the reaction vessel 4, and the clamp was clamped to prevent air leakage of the apparatus. The two ends of the water inlet and the water outlet of the circulating condensate water device are respectively connected on the water inlet 51 and the water outlet 52 of the utility model to control the reaction temperature of the liquid phase part 42 and connect the air inlet channel 43 at the CO2Opening the first switch valve 47 and the second switch valve 48 respectively, and introducing gas for 30min to make the air in the reaction device be CO2The gas is displaced and then the first and second on-off valves 47 and 48, respectively, are closed to isolate the reaction apparatus from the surrounding environment. The lamp source is positioned so that light can be irradiated into the reaction vessel vertically through the quartz plate 2. After the reaction had proceeded for a while, a gas sample of a certain volume was taken from the gas sampling port 45 with a sampling needle, and CH therein was analyzed by gas chromatography2、CH4And the content of the gas phase reduction product. And a volume of liquid sample is withdrawn through the liquid sampling port 46 and the detection of the liquid product is performed by gas chromatography and liquid chromatography.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (8)
1. A high light energy utilization rate photocatalytic reactor is characterized in that: the device comprises a light source (1) and a reaction container (4) arranged above the light source (1), wherein the upper side of the reaction container (4) is transparent, the reaction container (4) is divided into a gas phase part (41) and a liquid phase part (42) from top to bottom, a gas inlet channel (43) extending from the outer side to the liquid phase part (42) is arranged on the reaction container (4), and a gas outlet channel (44) is arranged on the gas phase part (41); the outer side of the reaction vessel (4) is wrapped with a metal silver layer.
2. The high light energy utilization photocatalytic reactor of claim 1, characterized by: the reaction vessel (4) is provided with a gas phase sampling port (45) in a gas phase part (41), a liquid phase sampling port (46) in a liquid phase part (42), and the gas phase sampling port (45) and the liquid phase sampling port (46) are respectively provided with a sealing piece.
3. The high light energy utilization photocatalytic reactor of claim 1, characterized by: the upper side of the reaction container (4) is provided with an opening, and a quartz plate (2) is arranged at the opening.
4. The high light energy utilization photocatalytic reactor of claim 3, characterized by: and a rubber ring is arranged on the contact surface of the quartz plate (2) and the reaction container (4).
5. The high light energy utilization photocatalytic reactor of claim 1, characterized by: and a condensed water interlayer (5) is arranged on the outer side of the metal silver layer of the reaction vessel (4), and the condensed water interlayer (5) is provided with a water inlet (51) and a water outlet (52).
6. The high light energy utilization photocatalytic reactor of claim 5, characterized by: the water inlet (51) is arranged at the position corresponding to the lower end of the liquid phase part (42), and the water outlet (52) is arranged at the position corresponding to the lower end of the liquid phase part (42).
7. The high light energy utilization photocatalytic reactor of claim 1, characterized by: a cut-off filter (11) is arranged below the light source (1), and light rays of the light source (1) reach the reaction container (4) through the cut-off filter (11).
8. The high light energy utilization photocatalytic reactor of claim 1, characterized by: the reaction vessel (4) is internally provided with a magneton (6).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113398860A (en) * | 2021-06-30 | 2021-09-17 | 浙江工业大学 | Photocatalysis reduction carbon dioxide experimental apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113398860A (en) * | 2021-06-30 | 2021-09-17 | 浙江工业大学 | Photocatalysis reduction carbon dioxide experimental apparatus |
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