CN218459472U - Extensible flow tube type photocatalytic reaction device - Google Patents
Extensible flow tube type photocatalytic reaction device Download PDFInfo
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- CN218459472U CN218459472U CN202220367107.XU CN202220367107U CN218459472U CN 218459472 U CN218459472 U CN 218459472U CN 202220367107 U CN202220367107 U CN 202220367107U CN 218459472 U CN218459472 U CN 218459472U
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Abstract
The utility model provides a can expand tubular photocatalysis reaction unit that flows. The device comprises a sample introduction device, a tubular photocatalytic membrane reactor and a collection device; the sample injection equipment comprises a gas inlet bottle and a sample injection bottle; the sample injection bottle is communicated with the tubular photocatalytic membrane reactor; the tubular photocatalytic membrane reactor comprises a plurality of transparent reaction tubes which are connected in series, a filling rod and a photocatalytic membrane coated on the surface of the filling rod are arranged in each transparent reaction tube, the photocatalytic membrane comprises a support material layer and a photocatalyst layer coated on the surface of the support material layer, and the support material layer is coated on the surface of the filling rod; the annular cavity formed between the photocatalytic layer and the inner wall of the transparent reaction tube is a catalytic reaction generation area; and the outer two sides of the tubular photocatalytic membrane reactor are provided with illumination equipment and cooling equipment. The device of the utility model is reasonable in design, simple structure, convenient operation, low cost to generally be suitable for multiple photocatalysis synthesis reaction, have higher productivity, be expected to be applied to industrial production.
Description
Technical Field
The utility model belongs to the technical field of the photocatalysis synthesis, a photocatalytic reaction device is related to, especially, relate to a mobile tubular photocatalytic unit that can expand.
Background
Due to the adoption of the solid catalyst which is in different phases with reactants, the heterogeneous photocatalytic technology can be subjected to operations such as separation, recovery and regeneration of the photocatalyst, and can realize high-selectivity synthesis of specific products by regulating and modifying the structure and the morphology of the photocatalyst, and the advantages make the industrial application of the heterogeneous photocatalytic technology receive more and more attention.
Most of heterogeneous photocatalytic reactions reported in the literature at present are carried out in a tank reactor, auxiliary operations such as loading, unloading and photocatalyst separation are needed, and the product quality is not stable easily, so that the system is only suitable for small-scale catalyst screening, and continuous production cannot be realized. The mobile phase reactor can obtain higher illumination efficiency and uniform material mixing due to higher length-diameter ratio, is easy to operate and control, has stable product quality, is beneficial to enlarged production, and has great potential in the field of photocatalytic synthesis.
CN113877494A discloses a multifunctional flow micro-tube reactor device and an operation method thereof, wherein a micro-tube reactor in the flow device is composed of an inner cylinder and an outer cylinder, an LED lamp strip is arranged between the inner cylinder and the outer cylinder, and the flow and pause modes are switched by using the switch of a valve to realize the flexible control of the reaction time. However, effective immobilization of the photocatalyst can avoid the separation and recovery operations of the catalyst, further reducing costs. At present, a packed column method is often adopted in a laboratory to fix the photocatalyst, but the method is easy to cause blockage and drop loss of the photocatalyst, and the limited light penetration depth can cause the waste of the photocatalyst in the middle part of a reactor; the chemical grafting method anchors the photocatalyst on the surface of a substrate material through a polymer, and can be used for manufacturing a microfluidic reactor by combining a microchannel etching technology, but the selection range of the polymer is narrow because chemical bonding is required to be formed, and the high cost also limits large-scale production and application.
Disclosure of Invention
In order to solve the technical problem, an object of the utility model is to provide a device suitable for heterogeneous photocatalytic reaction, the device's photocatalyst is fixed, illumination is efficient, and mass transfer performance is good, the flexible operation is simple and convenient, the productivity is high and application scope is wide.
In order to realize the technical purpose, the utility model provides an expandable flow tube type photocatalytic reaction device, which comprises a sample feeding device, a tube type photocatalytic membrane reactor and a collecting device;
the sample feeding equipment comprises a gas inlet bottle and a sample feeding bottle; the sample feeding bottle is communicated with the tubular photocatalytic membrane reactor;
the tubular photocatalytic membrane reactor comprises a plurality of transparent reaction tubes which are connected in series, a filling rod and a photocatalytic membrane coated on the surface of the filling rod are arranged in each transparent reaction tube, the photocatalytic membrane comprises a support material layer and a photocatalyst layer coated on the surface of the support material layer, and the support material layer is coated on the surface of the filling rod;
an annular cavity formed between the photocatalytic layer and the inner wall of the transparent reaction tube is a catalytic reaction generation area;
and illumination equipment and cooling equipment are arranged on the outer two sides of the tubular photocatalytic membrane reactor.
Preferably, the gas inlet bottle is connected with the sample injection bottle through the inlet valve, and a sample injection pump is arranged on a connecting pipeline of the sample injection bottle and the tubular photocatalytic membrane reactor.
Further, the sample injection pump is an injection pump, a gear pump or a booster pump.
Preferably, the tubular photocatalytic membrane reactor is connected with the collecting device, and an outlet valve is arranged on a connecting pipeline between the tubular photocatalytic membrane reactor and the collecting device.
Preferably, the collection device is a collection bottle.
Further, the collecting bottle is provided with an exhaust hole.
The utility model discloses an in the device, set up the import valve before advancing the kind bottle and set up the outlet valve behind tubular photocatalytic membrane reactor, the atmosphere in the tubular photocatalytic membrane reactor of purpose replacement flow, thereby make the utility model discloses can be applicable to multiple reaction type.
As a preferred technical scheme of the utility model, the material of transparent reaction tube is light-admitting quality material. Specifically, the light-transmissive material is quartz, glass, or plastic.
As an optimal technical scheme of the utility model, the material of filling the stick is corrosion-resistant material. In particular, the corrosion resistant material is quartz, glass, plastic, ceramic or metal.
The present invention is not particularly limited to the specific requirements and the specific limitations of the structural features such as the size and the shape of the transparent reaction tube and the filler rod, and the transparent reaction tube requires a light-transmitting material such as quartz, so that the illumination device can effectively function. The filler rod is in the utility model provides an effect is the surface area that improves tubular photocatalytic membrane reactor and the volume ratio to need corrosion-resistant material, consequently can understand, other transparent reaction pipe and the filler rod that can realize this type of function all can be used to the utility model discloses in, technical person in the art can carry out the adaptability according to using scene and test condition to the size and the shape of transparent reaction pipe and filler rod and adjust.
Optimally, the illumination device is composed of one or two light source plates and one mirror surface plate which are opposite, and the light source plates are provided with lamp belts or a plurality of point light sources which are uniformly distributed.
Further, the wavelength of the light source is 180-2500nm.
Optimally, the cooling device is a plurality of fans arranged on the back of the light source board and the mirror board.
Optimally, the photocatalyst is a metal oxide semiconductor, a metal nitrogen compound semiconductor, a metal sulfide semiconductor, a metal selenide semiconductor, a perovskite semiconductor, a delafossite semiconductor, a carbon-based polymer semiconductor or a nitrogen-based polymer semiconductor; the supporting material is polyvinyl alcohol, polyester, polyimide, polyaniline, polydimethylsilane, polyethylene glycol terephthalate, aluminum oxide, zinc oxide, copper oxide, nickel oxide, glass, gold, silver, platinum or titanium; the thickness of the photocatalyst layer in the photocatalytic film is 0.001-100 mu m.
The utility model provides a beneficial effect that technical scheme brought is:
the utility model discloses but flow tube photocatalysis reaction unit that extends is through assembling sampling equipment, gas replacement equipment, tubular photocatalytic membrane reactor, lighting apparatus and collecting device and coordinating, is favorable to recycling light catalyst, has saved the step of separation, and mass transfer, heat transfer are effectual, and the photocatalysis performance is good, and reactor long service life; meanwhile, on the one hand, the replacement of different gases is realized by utilizing the switch of the valve, on the other hand, the photocatalysis membrane loaded with different photocatalysts can be simply and conveniently replaced, even a plurality of photocatalysis membranes are used simultaneously, and the reaction type suitable for the utility model is expanded. The synthesis scale can be improved by prolonging the length of the reactor, the operation is simple and convenient, the cost is low, and the method is suitable for industrial application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flow tube type photocatalytic membrane reaction apparatus according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a single reactor in a flow tube type photocatalytic membrane reaction apparatus according to an embodiment of the present invention.
In the figure: 1-sample introduction equipment; 2-tubular photocatalytic membrane reactor; 3-an illumination device; 4-a cooling device; 5-an outlet valve; 6-collecting equipment; 7-air vent; 8-transparent reaction tube; 9-a photocatalyst layer; 10-a layer of support material; 11-a filler rod; 12-gas inlet bottle; 13-an inlet valve; 14-a sample introduction bottle; 15-sample pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, for clarity and conciseness of description, not all of the various components shown in the figures are described. The various components shown in the figures provide those skilled in the art with a fully enabled disclosure of the invention. The operation of many of the components is familiar and obvious to those skilled in the art.
The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.
Example 1
This embodiment provides a tubular photocatalytic reaction device that flows that can extend, as shown in fig. 1-2, tubular photocatalytic reaction device that flows is including sampling equipment 1, tubular photocatalytic membrane reactor 2 and the collecting device 6 of tube coupling in proper order, and tubular photocatalytic membrane reactor 2 includes the transparent reaction pipe 8 of a plurality of root series connections, is equipped with filler rod 11 in the transparent reaction pipe 8 and the cladding at the photocatalytic membrane on filler rod surface, and the annular cavity that forms between photocatalyst layer 9 and the transparent reaction pipe 8 inner wall is reaction emergence district, and tubular photocatalytic membrane reactor 2 outside both sides are provided with illumination equipment 3 and cooling device 4.
The tubular photocatalytic membrane reaction device of the utility model is suitable for heterogeneous photocatalytic reaction, and has the characteristics of high photocatalyst fixation, high illumination efficiency, good mass transfer performance, flexible and simple operation, high yield and wide application range.
The sample injection device 1 comprises a sample injection bottle 14 connected with the tubular photocatalytic membrane reactor 2 and a gas inlet bottle 12 connected with the sample injection bottle 14, wherein a sample injection pump 15 is arranged on a pipeline between the sample injection bottle 14 and the tubular photocatalytic membrane reactor 2, and the sample injection pump 15 is any one of an injection pump, a gear pump and a booster pump.
It should be noted that the utility model discloses structural feature such as size, shape and material to sampling pump 15 does not do specific requirement and special restriction, and the sampling pump is in the utility model provides an effect is connected sampling bottle 14 for the sample in the sampling bottle 14 gets into the mixed pipeline smoothly, and it can be understood consequently that other sampling pumps that can realize this type of function all can be used to the utility model discloses in, technical personnel in the field can carry out the adaptability according to size, shape and the material of using scene and test condition to the sampling pump and adjust.
An inlet valve 13 is arranged on a pipeline of the gas inlet bottle 12 connected with the sample inlet bottle 14, an outlet valve 5 is arranged on a pipeline of the tubular photocatalytic membrane reactor 2 connected with the collecting device 6, the collecting device 6 is a collecting bottle, and the collecting bottle is provided with an exhaust hole 7.
The transparent reaction tube is made of a light-transmitting material, and the light-transmitting material is one selected from quartz, glass, plastics and the like. The filling rod is made of a corrosion-resistant material, and the corrosion-resistant material is one selected from quartz, glass, plastics, ceramics and metals. It should be noted that the present invention does not specifically require and limit the structural features such as size and shape of the transparent reaction tube and the filling rod, the transparent reaction tube needs light-transmitting material, such as quartz, so that the illumination device can effectively function, and the filling rod is used in the present invention to improve the ratio of the surface area to the volume of the tubular photocatalytic membrane reactor, and to require corrosion-resistant material, therefore, it can be understood that other transparent reaction tubes and filling rods capable of realizing such functions can be used in the present invention, and those skilled in the art can perform adaptive adjustment to the size and shape of the transparent reaction tube and the filling rod according to the use scene and the test conditions.
The illumination device 3 is composed of two light source plates or one light source plate and one mirror surface plate which are opposite, furthermore, the light source plate is provided with a lamp strip or a plurality of point light sources which are uniformly arranged, furthermore, the wavelength range of the light sources is 10-2500nm, preferably 180-2500nm.
The cooling device 4 is a number of fans arranged behind the light source board and the mirror board.
A photocatalytic film is formed by a coating method, and a photocatalyst is fixed on the surface of the support material layer 10. The support material layer 10 of the photocatalytic film is coated on the surface of the filler rod 11, and the photocatalytic layer 9 is not hidden. The photocatalyst is one selected from a metal oxide semiconductor, a metal nitrogen compound semiconductor, a metal sulfide semiconductor, a metal selenide semiconductor, a perovskite semiconductor, a delafossite semiconductor, a carbon-based polymer semiconductor, a nitrogen-based polymer semiconductor and the like; the supporting material is one selected from polyvinyl alcohol, polyester, polyimide, polyaniline, polydimethylsilane, polyethylene terephthalate, aluminum oxide, zinc oxide, copper oxide, nickel oxide, glass, gold, silver, platinum, titanium and the like; the thickness of the photocatalyst layer in the photocatalytic film is 0.001-100 mu m.
It should be noted that the present invention does not specifically require or limit the structural features such as the size and thickness of the support material and the photocatalytic film, and the support material is used to fix the photocatalytic film and make the photocatalytic film coat on the surface of the filling rod, and the photocatalytic film is used to absorb light and participate in the completion of the photocatalytic reaction, so that the technicians in the field can adjust the size and thickness of the support material and the photocatalytic film according to the use scene and the test conditions.
In another embodiment, the present invention provides a method of operating a flow tube-type photocatalytic membrane reaction apparatus according to one embodiment, the method comprising:
assembling the prepared photocatalytic film into a plurality of transparent reaction tubes 8, replacing the atmosphere in the tubular photocatalytic film reaction device, opening the sample injection device 1 and the tubular photocatalytic film reactor 2, starting a flow mode, and enabling the solution after the photocatalytic reaction to flow into the collection device 6.
The operation method specifically comprises the following steps:
the prepared one or more photocatalytic films are assembled into a plurality of transparent reaction tubes 8 according to a certain sequence, an air inlet tube is inserted into the sample inlet bottle below the liquid level, the sample inlet tube is pumped out of the sample inlet bottle above the liquid level, the air inlet bottle 12, the inlet valve 13, the outlet valve 5 and the exhaust hole 7 of the collecting bottle are opened, after the atmosphere in the flow tube type photocatalytic film reaction device is replaced, the exhaust hole 7, the outlet valve 5, the inlet valve 13 and the air inlet bottle 12 are closed, the sample inlet pump 15 and the outlet valve 5 are opened, the flow mode is started, and the solution after the photocatalytic reaction flows into the collecting bottle 6.
In the flow mode, the flow rate of the solution is 0.001-100mL/min.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (10)
1. A kind of extendible flow tube type light catalyzed reaction device, characterized by that: the device comprises a sample injection device, a tubular photocatalytic membrane reactor and a collection device;
the sample feeding equipment comprises a gas inlet bottle and a sample feeding bottle; the sample feeding bottle is communicated with the tubular photocatalytic membrane reactor;
the tubular photocatalytic membrane reactor comprises a plurality of transparent reaction tubes which are connected in series, a filling rod and a photocatalytic membrane coated on the surface of the filling rod are arranged in each transparent reaction tube, the photocatalytic membrane comprises a support material layer and a photocatalyst layer coated on the surface of the support material layer, and the support material layer is coated on the surface of the filling rod;
an annular cavity formed between the photocatalytic layer and the inner wall of the transparent reaction tube is a catalytic reaction generation area;
and the two outer sides of the tubular photocatalytic membrane reactor are provided with illumination equipment and cooling equipment.
2. The expandable flow tube photocatalytic reaction device as set forth in claim 1, characterized in that: the gas inlet bottle is connected with the sample injection bottle through the inlet valve, and a sample injection pump is arranged on a connecting pipeline of the sample injection bottle and the tubular photocatalytic membrane reactor.
3. The expandable flow tube photocatalytic reaction device of claim 2, characterized by: the sample injection pump is an injection pump, a gear pump or a booster pump.
4. The expandable flow tube photocatalytic reaction device of claim 1, characterized by: the tubular photocatalytic membrane reactor is connected with the collecting device, and an outlet valve is arranged on a connecting pipeline of the tubular photocatalytic membrane reactor and the collecting device.
5. The expandable flow tube photocatalytic reaction device of claim 1, characterized by: the collecting device is a collecting bottle.
6. The expandable flow tube photocatalytic reaction device as set forth in claim 5, characterized in that: the collecting bottle is provided with an exhaust hole.
7. The expandable flow tube photocatalytic reaction device of claim 1, characterized by: the illumination equipment comprises one or two light source plates and a mirror surface plate relatively, and the light source plates are provided with lamp belts or a plurality of point light sources which are uniformly distributed.
8. The expandable flow tube photocatalytic reaction device of claim 7, characterized by: the wavelength of the light source is 180-2500nm.
9. The expandable flow tube photocatalytic reaction device of claim 1, characterized by: the cooling device is a plurality of fans arranged on the back of the light source plate and the mirror surface plate.
10. The expandable flow tube photocatalytic reaction device as set forth in claim 1, characterized in that: the photocatalyst is a metal oxide semiconductor, a metal nitrogen compound semiconductor, a metal sulfide semiconductor, a metal selenide semiconductor, a perovskite semiconductor, a delafossite semiconductor, a carbon-based polymer semiconductor or a nitrogen-based polymer semiconductor; the supporting material is polyvinyl alcohol, polyester, polyimide, polyaniline, polydimethylsilane, polyethylene glycol terephthalate, aluminum oxide, zinc oxide, copper oxide, nickel oxide, glass, gold, silver, platinum or titanium; the thickness of the photocatalyst layer in the photocatalytic film is 0.001-100 mu m.
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| CN202220367107.XU CN218459472U (en) | 2022-02-23 | 2022-02-23 | Extensible flow tube type photocatalytic reaction device |
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| CN202220367107.XU CN218459472U (en) | 2022-02-23 | 2022-02-23 | Extensible flow tube type photocatalytic reaction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534665A (en) * | 2022-02-23 | 2022-05-27 | 苏州大学张家港工业技术研究院 | Expandable flow tube type photocatalytic reaction device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534665A (en) * | 2022-02-23 | 2022-05-27 | 苏州大学张家港工业技术研究院 | Expandable flow tube type photocatalytic reaction device and method |
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