CN215028770U - Photoreactor and fluid reaction device - Google Patents

Abstract

The utility model provides a photoreactor and fluid reaction unit. The photo reactor comprises at least one flow-through conduit connected to at least one inlet pipe of the fluid reaction device and at least one outlet pipe of the fluid reaction device, further comprising a light radiation source configured to emit light within a defined wavelength range towards the flow-through conduit; the light radiation source comprises a first light radiation source and a second light radiation source which are respectively arranged at the inner side and the outer side of the through cavity of the flow pipeline. The utility model discloses a special setting of a plurality of light radiation sources and circulation pipeline route improves light intensity and luminous flux, improves photocatalytic's efficiency, shortens the photocatalytic reaction time.

Description

Photoreactor and fluid reaction device

Technical Field

The utility model belongs to the technical field of chemical instrumentation, concretely relates to photoreactor and fluid reaction unit.

Background

Visible light is used as renewable green energy, the reserves are abundant, the environment is friendly, and the synthesis of an organic molecular framework by utilizing visible light catalysis is a major subject of synthetic chemistry. The visible light catalysis can realize the electron transfer between the catalyst and the substrate under mild conditions, reduce the activation energy of the reaction, and is a green and efficient reaction path. Meanwhile, the catalyst can be cooperated with organic micromolecule catalysis and transition metal catalysis, so that the reaction type is greatly expanded, and the synthesis of complex natural products under mild conditions is realized.

But the photocatalytic reaction has gradually developed over 20 years. In 2017, the merck company in the U.S. develops a novel photoreactor, and drives various companies and research units at home and abroad to further research and develop multi-site parallel photoreactors, but the photoreactors are all suitable for small-specification reactions. And because the device is limited by the illumination intensity and the light penetration distance, the high-efficiency photocatalytic equipment suitable for large-scale conversion is not broken through all the time.

Photoreactors are vessels or systems that can promote photochemical reactions. Photoreactors generally comprise a reaction vessel and a light source. The reaction vessel may be transparent such that the reactants within the reaction vessel may receive light from the light source. The use of photoreactors to produce the desired product is often difficult and inefficient in terms of product yield or time. Tunable light intensity, wavelength, light absorption depth and temperature control are important parameters for improving the efficiency of photoreaction. However, these are not well achieved in existing photoreactors.

A conventional photoreactor has a cylindrical two-layer structure having a cylindrical photoreaction tube sealed in an inner layer, a cylindrical cooling tube sealed in an outer layer, and a light source inside the photoreaction tube. It has an inlet for introducing a sample into the inner layer of the photoreaction tube and an outlet for discharging the sample, and the inlet is provided with an introduction tube reaching the bottom of the photoreaction tube. The sample introduced from the introduction tube ascends in the photoreaction tube and is discharged from the discharge port. The time during which the sample introduced into the photoreaction tube was discharged from the discharge port was expressed as an average residence time. Therefore, the sample may be discharged in a short time or may stay for a long time without being discharged. If the sample is discharged in a short time, it is not converted into a target product because the light irradiation time is short. When the sample stays in the photoreaction tube for a long time, the irradiation time of light becomes long, and the target product is further reacted and converted into a by-product, there are problems such as a low conversion rate of the sample and a high generation rate of the by-product. In addition, with conventional fixed plate based photoreactors, replacing photoreactor components is often an expensive and time consuming process involving long downtime of the photoreactor.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a photo reactor and a fluid reaction device.

In order to achieve the above object, according to one aspect of the present invention, there is provided a photo reactor comprising at least one flow-through conduit connected to at least one inlet pipe for transporting a reactant and at least one outlet pipe for outputting the reactant, further comprising a light radiation source configured to emit light in a defined wavelength range towards the flow-through conduit; the light radiation source comprises a first light radiation source and a second light radiation source which are respectively arranged at the inner side and the outer side of the through cavity of the flow pipeline. The penetrating cavity is an internal cavity which is formed by a circulating pipeline and is communicated up and down. The vertical centre line defining the penetration cavity is the central axis (X).

Further, the light irradiation directions of the first and second light radiation sources are opposite.

Further, the flow conduit follows a tortuous path around the central axis (X) forming a flow path, and further the flow conduit spirals around the central axis (X) forming a flow path.

Further, the first or second optical radiation source is annularly arranged around the central axis (X).

Further, the first or second optical radiation source comprises a fixation plate and a number of light source arrays detachably connected to the fixation plate.

Further, the fixing plate is arranged in a polygonal shape, preferably a regular polygon, and the fixing plate of the first light radiation source arranged inside the flow channel penetration cavity is preferably a regular quadrangle, a regular pentagon or a regular hexagon. The holding plate of the second light radiation source, which is arranged outside the flow-through channel penetration cavity, is preferably 6-18 sided. If the number of polygon sides is higher than that of the eighteen-sided polygon, the heat dissipation balance is affected.

Further, the fixing plate is made of heat conducting materials, the heat conducting materials are copper, aluminum, magnesium or alloys thereof, and the heat conducting coefficient of the fixing plate is larger than or equal to 100W/M^.K。

Further, the light source array is selected from light sources such as an ultraviolet lamp, a visible light lamp, an infrared lamp, a fluorescent lamp, an LED lamp, a mercury lamp and a xenon lamp, and the light source array is preferably composed of a plurality of LED lamps connected in series, and the light emitting wavelength range of the light emitting array is 380-780 nm.

Further, the light source arrays are connected by circuit connection means.

Further, the plurality of LED lamps of the light source array may be connected in series by a wire.

Furthermore, the light source array further comprises conductor plates and annular conductive grooves, the LED lamps of the light source array are electrically connected to the conductor plates, and the LED lamps can be connected in series by inserting the conductor plates into the annular conductive grooves.

Furthermore, a light reflection area is arranged on the fixing plate and at the gap of the light source array, a high-reflection mirror surface is plated on the light reflection area through a sputtering coating, and the reflectivity of the light reflection area is greater than or equal to 90%.

Further, the flow-through conduit is composed of a transparent material, preferably a quartz tube, having a light transmittance of more than 80%.

Further, the flow-through pipe also comprises a transparent annular plate, around which the flow-through pipe is wound, the vertical circular axis of the transparent annular plate being the central axis (X).

Further, the inner diameter of the flow pipeline is 1-20 mm.

Further, the spiral space of the flow pipeline is 1-10 mm.

Further, the spiral height of the flow pipe is 80-1000 mm.

Furthermore, the outside cover of the photoreactor is equipped with a shading shell, and the shell can be PLA, PP, PC etc.

Further, the shading shell can be provided with heat dissipation holes, preferably strip-shaped heat dissipation holes.

According to another aspect of the utility model, a fluid reaction device is provided, including drive unit, the aforesaid photoreactor and store the unit, the inlet tube and the outlet pipe of photoreactor are connected respectively drive unit and storage unit, store the unit through transmission pipeline connect in drive unit, drive unit be used for with store the reactant in the unit and carry extremely in the circulation pipeline of photoreactor.

Further, the storage unit further comprises a feeding port for adding new reactants.

Further, the storage unit further comprises a stirring device.

Further, the stirring device is a magnetic stirrer or an electric stirrer.

Further, the transmission unit comprises a pump and a motor, and the inner wall of a pipe used by the pump is coated with polytetrafluoroethylene and the like.

Further, the fluid reaction device also comprises a temperature control unit, and the temperature control range is 0-60 ℃.

Furthermore, the temperature control unit is a semiconductor refrigerator or a fan, and is arranged above the photoreactor to realize temperature control in the reactor.

Use the technical scheme of the utility model, following beneficial effect has:

(1) the light reactor of the utility model has the advantages that the first light radiation source and the second light radiation source are arranged on the inner side and the outer side of the circulation pipeline with a special structure, and the inner side and the outer side of the circulation pipeline are illuminated, so that the light intensity and the luminous flux are improved, the photocatalysis time is shortened, and the photocatalysis efficiency is improved compared with the arrangement of a single radiation light source; (2) the light reactor of the utility model improves the light utilization rate and realizes higher light conversion efficiency by arranging the circulating pipeline as the quartz tube with high transparency; (3) the photoreactor of the utility model improves the illumination efficiency by replacing the prior art big bottle with the spiral tube, the prior art reacts in the big bottle, and the effective penetration distance of light in the reactant is only about 2 mm; (4) the utility model discloses a light reactor light source array detachable connect in the fixed plate, it is convenient to change the light source, and the eyeshield of shading simultaneously. (5) The fluid reaction device of the utility model circulates reactants through the pump, the reaction can be circulated for a longer time (2-10 days), and large-scale photocatalytic reaction (hectogram level) is realized; in addition, the temperature control unit arranged above the photoreactor realizes the temperature control in the reactor.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic view of a photoreactor provided according to an embodiment of the present invention;

FIG. 2 shows a schematic view of a flow-through conduit of the photoreactor of FIG. 1;

FIG. 3 shows a schematic view of a first radiation source of the photoreactor of FIG. 1;

FIG. 4 shows a schematic view of a second radiation source of the photoreactor of FIG. 1;

fig. 5 shows a schematic view of a fluid reaction device provided according to an embodiment of the present invention;

wherein the figures include the following reference numerals:

10. the light reactor comprises a light reactor, 11, a flow pipeline, 12, a light radiation source, 13, a light shading shell, 111, an inlet pipe, 112, an outlet pipe, 113, an annular plate, 121, a first light radiation source, 122, a second light radiation source, 123, a fixing plate, 123a, an inner layer lamp panel, 123b, an outer layer lamp panel, 124, a light source array, 124a, a light source array of the inner layer lamp panel, 124b, a light source array of the outer layer lamp panel, 125, a light reflection area, 125a light reflection area of the inner layer lamp panel, 125b, a light reflection area of the outer layer lamp panel, 20, a transmission unit, 30, a storage unit, 40, a temperature control unit, 50 and a filling port.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As analyzed in the background of the present application, the photoreactors in the prior art suffer from problems such as being unsuitable for large scale reactions; the external circulating water cooling is needed, water is wasted, and hidden dangers in a laboratory are caused by easy sprinkling; the air cooling temperature control capability is limited, and the service life of the LED lamp cannot be ensured; the kettle type reaction has low illumination efficiency; the wavelength and power of the LED lamp are troublesome to replace; the fluid pipeline is made of polytetrafluoroethylene, so that the light transmittance is low; poor shading, injury to the eyes of the experimenter; the fan can not control the temperature accurately; the patent refers to the field of 'investigating or analysing materials by determining their chemical or physical properties'.

As described herein, a photoreactor is a vessel in which a photochemical reaction occurs. Photochemical reactions are reactions initiated by energy absorption in the form of light. Upon absorption of light, the molecules can be converted to an excited state, which is chemically and physically different from the original molecule. Photosynthesis is an example of a photochemical reaction in which incident light promotes electron transfer, converting carbon dioxide and water into oxygen and carbohydrates. Other examples of photochemical reactions include the Norrish reaction, dimerization of olefins and blocking of 1, 3-butadiene to cyclobutene. Photoreactors generally comprise a transparent vessel in which the reaction takes place. The temperature of the photoreactor is regulated by air or a transparent heat transfer fluid.

In an exemplary embodiment of the present application, there is provided a photo reactor 10 comprising at least one flow-through conduit 11, the flow-through conduit 11 being connected to at least one inlet pipe 111 for transporting a reactant and at least one outlet pipe 112 for outputting the reactant; the photoreactor 10 further comprises a light radiation source 12 configured to emit light within a defined wavelength range towards the flow-through conduit 11; the optical radiation sources 12 comprise a first 121 and a second 122 optical radiation source, the first 121 and the second 122 optical radiation source being arranged on the inner and outer sides of the through-going lumen of the flow-through duct 11, respectively. The penetrating cavity is an internal cavity which is formed by the circulating pipeline 11 and is communicated up and down. The vertical centre line defining the penetration cavity is the central axis (X).

In some embodiments, the flow conduit 11 follows a tortuous path about the central axis (X) forming a flow path, preferably a helical flow path. The spiral circulation pipeline is arranged around the light source, so that compared with the traditional cylindrical circulation pipeline, the residence time of the photo-reactant in the circulation pipeline can be prolonged, and the light utilization efficiency is improved. The utility model discloses set up second light radiation source 122 in spiral circulation pipeline's outside, first light radiation source 121 or second light radiation 122 source wind center pin (X) annular sets up, and preferred first light radiation source 121 or second light radiation source 122 set up for concentric structure in circulation pipeline 11 pierces through the inside and outside both sides in chamber. The second light radiation source 122 can protect the spiral flow pipeline, and simultaneously, the second light radiation source and the first light radiation source 121 can illuminate the inner side and the outer side, so that the light intensity and the luminous flux are improved, the photocatalysis time is shortened, and the photocatalysis efficiency is improved.

The first optical radiation source 121 or the second optical radiation source 122 includes a fixing plate 123 and a plurality of light source arrays 124, and the light source arrays 124 are detachably connected to the fixing plate 123, so that it is convenient to replace the light source, and simultaneously, the light source can shield the eyes. The connecting device with the detachable connection mode comprises insertion connection, threaded connection, buckle connection and sticking connection. The first radiation source 121 includes an inner lamp panel 123a, and the second radiation source 122 includes an outer lamp panel 123 b.

The light source array 124 of the first or second light radiation sources 121 or 122 may use light sources such as an ultraviolet lamp, a visible light lamp, an infrared lamp, a fluorescent lamp, an LED lamp, a mercury lamp, and a xenon lamp. The light source array 124 is preferably composed of several LED lamps connected in series, and the LED wavelength can be controlled in the 5nm range, thereby minimizing side reactions and heat generation. Because LED lamps have higher efficiency in converting electrical energy into photons, their relative power consumption is lower, and therefore overall energy and maintenance costs are reduced. Also, since the amount of heat generated by the LEDs is relatively low, the amount of thermal fatigue of the photo-reactor may be relatively small to ensure a longer lifetime of the photo-reactor.

The light source array 124 is connected by circuit connection means.

In some embodiments, the LED lamps of the light source array 124 may be connected in series by wires.

In some embodiments, the light source array 124 further includes a conductor plate and a ring-shaped conductive groove, and a plurality of LED lamps of the light source array are electrically connected to the respective conductor plate, and the LED lamps are connected in series by inserting the conductor plate into the ring-shaped conductive groove.

In some embodiments, the optical radiation source 12 may comprise one or more LED lamps. In some embodiments, each LED lamp can be easily removed and replaced. The replaceable LED lamp allows the operator a great deal of variability in the operating parameters of the photoreactor. For example, an LED lamp emitting light of a first wavelength may be replaced by an LED lamp emitting light of a second wavelength. This adjustment of the wavelength of the incident light allows the photoreactor to be used for a wide range of photochemical reactions. The power can be conveniently adjusted by adjusting the power supply; the light source array 124 is detachably connected to the fixing plate 123, and the light sources with different wavelengths can be conveniently replaced by replacing the light source array 124.

The fastening plate 123 is arranged in a polygonal, preferably regular polygonal shape, the fastening plate 123a of the first light radiation source 121 arranged inside the through-flow channel 11 is preferably a regular quadrilateral, a regular pentagon, a regular hexagon, and the fastening plate 123b of the second light radiation source 122 arranged outside the through-flow channel 11 is preferably a 6-18 polygon. If the number of polygon sides is higher than that of the eighteen-sided polygon, the heat dissipation balance is affected. Compare traditional cylinder type fixed plate, light source array 124 convenient to detach on the polygon fixed plate 123 of this application, the change of the light source array 124 of being convenient for reduces photoreactor's use cost.

The fixing plate 123 is made of a heat conducting material, the heat conducting material is copper, aluminum, magnesium or an alloy thereof, and the heat conducting coefficient of the fixing plate is greater than or equal to 100W/M^.K. A light reflection region 125 is disposed on the fixing plate 123 at the gap between the light source arrays 124, the light is reflected by the highly reflective mirror, and the reflected light is further used for light reaction. Therefore, the light use efficiency can be more effectively improved. The reflectivity of the high-reflectivity mirror surface is more than or equal to 90%, and the reflectivity is higher than the range, so that high-efficiency reflection of light can be realized, and the utilization rate of the light is improved.

The flow channel 11 is made of a transparent material, preferably a quartz tube, having a light transmittance of 80% or more. The luminousness of the spiral pipe that adopts synthetic resin to make among the prior art is low, and light utilization efficiency is poor, and the conversion rate of sample is low, the utility model discloses a luminousness of quartz capsule is than higher, improves light utilization ratio, realizes higher light conversion efficiency.

The photoreactor 10 further comprises a transparent annular plate 113, the flow-through channels 11 being wound on the transparent annular plate 113, the vertical circular central axis of the transparent annular plate 113 being the central axis (X). The transparent annular plate 113 is a hollow glass cylinder.

The inner diameter of the flow pipe 11 is 1-20 mm. The inner diameter is set in the interval to ensure the light penetration rate.

The spiral distance of the flow pipeline 11 is 1-10 mm.

The spiral height of the flow pipe 11 is 80-1000 mm. The height of the spiral pipe affects the time the solvent is exposed to light, the longer the pipe, the longer the exposure time.

The photoreactor 10 is externally sleeved with a shading shell 13, and the shell can be PLA, PP, PC and the like.

Further, in order to increase the heat dissipation rate of the photo reactor, heat dissipation holes, preferably strip-shaped heat dissipation holes, may be disposed on the housing 13.

In an exemplary embodiment of the present application, a fluid reaction apparatus is provided, which includes a transmission unit 20, the photo reactor 10 and a storage unit 30, wherein the inlet pipe 111 and the outlet pipe 112 of the photo reactor are respectively connected to the transmission unit 20 and the storage unit 30, the storage unit 30 is connected to the transmission unit 20 through a transmission pipeline, and the transmission unit 20 is configured to transmit the reactant in the storage unit 30 to the circulation pipeline 11 of the photo reactor 10.

The accumulator unit 30 also includes an injection port 50 for adding new reactants. The storage unit 30 is located below the photo reactor 10, and has two ports on the top surface, the injection port 50 is used for injecting reactants, the other port is connected to the lower outlet of the photo reactor 10, and the outlet is located on the bottom surface or the side surface and connected to the inlet of the pump through a silicone tube. Meanwhile, the storage unit 30 further comprises a stirring device, a long stirring rod is arranged inside the stirring device, the stirring device is preferably a magnetic stirrer, and the reaction liquid is uniformly stirred in the storage bin through an external strong magnetic field. The stirring device can also be an electric stirrer and is driven by an external power supply to stir.

The driving unit 20 includes a pump and a motor, and the pump serves to circulate the reactant. In some embodiments, the pump may be selected from peristaltic pumps, centrifugal pumps, plunger pumps, and the like, with the inner wall of the tube used in the pump having a coating of polytetrafluoroethylene or the like to improve the corrosion resistance of the pump.

The fluid reaction device also comprises a temperature control unit 40, and the temperature control range is 10-45 ℃. The temperature control unit is a semiconductor refrigerator or a fan, is arranged above the photoreactor, and realizes temperature control in the reaction bin through the upper temperature control unit.

The working process of the fluid reaction device is as follows: the fluid reaction apparatus includes a photoreactor 10, a transmission unit 20, a storage unit 30, and a temperature control unit. The inlet pipe 111 and the outlet pipe 112 of the photo reactor 10 are respectively connected to the transmission unit 20 and the storage unit 30, and the reactant is delivered from the inlet pipe 111 of the photo reactor 10, enters the flow channel 11, and undergoes a photochemical reaction under the irradiation of the first radiation source 121 and the second radiation source 122, and the reactant is output from the output pipe of the photo reactor 10. The storage unit 30 is connected to the transmission unit 20 through a transmission pipeline, is located below the photo reactor 10, and has two ports on the top surface, the injection port 50 is used for injecting reactants, the other port is connected to the lower outlet of the photo reactor 10, and a switch is arranged on the bottom surface or the side surface and connected to the inlet of the pump of the transmission unit 20 through a silicone tube. Meanwhile, the long stirring rod is arranged inside the reaction kettle, and the reaction liquid is uniformly stirred in the storage bin through an external strong magnetic field. The transmission unit 20 is used for transmitting the reactant in the storage unit 30 to the circulation pipeline 11 of the photoreactor 10. Thus, the reciprocating reaction is circulated until the final reaction product is obtained. The temperature control in the reactor is achieved by an overhead temperature control unit 40 above the photoreactor 10.

The advantageous effects of the present application will be described below with reference to specific examples and comparative examples.

Example 1

The photo reactor 10 comprises a flow-through conduit 11, a light radiation source 12 and a housing 13.

The flow pipe 11 is connected to at least one inlet pipe 111 for delivering a reactant and at least one outlet pipe 112 for outputting a reactant, the flow pipe 11 is spirally formed around a transparent annular plate 113 to form a flow path, the flow pipe 11 is a quartz spiral pipe, the total diameter of the quartz spiral pipe is 45mm, the outer diameter of the pipe wall is 5mm, the inner diameter is 3mm, and the spiral distance is 2 mm. The annular plate 113 is a hollow glass cylinder.

The optical radiation sources 12 comprise a first optical radiation source 121 and a second optical radiation source 122. The first 121 and second 122 optical radiation sources are arranged on the inner and outer sides of the through-going lumen of the flow-through duct 11, respectively. The penetrating cavity is an internal cavity which is formed by a circulating pipeline and is communicated up and down. The first optical radiation sources 121 comprise an inner lamp panel 123a and an array of light sources 124a and the second optical radiation sources 122 comprise an inner lamp panel 123b and an array of light sources 124 b. Inlayer lamp plate 123a, outer lamp plate 123b all adopt high heat conduction material aluminium, inlayer lamp plate 123a is regular hexagon, and outer lamp plate 123b is regular dodecagon, has the slot on the inlayer lamp plate 123a, and it has LED light source array 124a to peg graft, has the slot on the outer lamp plate 123b, and it has LED light source array 124b to peg graft, through electric wire series connection between the LED lamp, through changing lamp plate or light source array 124 or single LED lamp, realizes the convenient change in different wavelength lamp sources.

The housing 13 is a light-blocking PLA material.

The fluid reaction apparatus includes a transmission unit 20, the photo-reactor 10, and a storage unit 30. The inlet pipe 111 and the outlet pipe 112 of the photoreactor 10 are respectively connected with the transmission unit 20 and the storage unit 30, the storage unit 30 is connected with the transmission unit 20 through a transmission pipeline, and the transmission unit 20 is used for transmitting the reactant in the storage unit 30 to the circulation pipeline 11 of the photoreactor 10. The driving unit 20 includes a peristaltic pump and a motor, and the pump functions to circulate the reactant. The storage unit 30 is located below the photoreactor 10, and has two ports on the top surface, the injection port 50 is used for injecting reactants, the other port is connected with the lower outlet of the photoreactor 10, and the outlet is arranged on the bottom surface and connected with the inlet of the peristaltic pump through a silicone tube. Meanwhile, the storage unit 30 further includes a magnetic stirrer.

In the photo reactor of example 1, the first light radiation source and the second light radiation source are respectively disposed on the inner side and the outer side of the penetration cavity formed by the spiral flow channel, and the inner side and the outer side are illuminated, so that compared with the arrangement of a single radiation light source, the light intensity and the light flux are improved, the photocatalysis time is shortened, and the photocatalysis efficiency is improved. The utility model discloses a photocatalyst unit improves light utilization ratio through setting up the circulation pipeline into the quartz capsule of high transparency, realizes higher light conversion efficiency. The utility model discloses a light reactor light source array detachable connect in the fixed plate, it is convenient to change the light source, and the eyeshield of shading simultaneously.

Example 2

Example 2 differs from example 1 in that the surface light reflection areas 125a and 125b of the inner lamp panel 123a and the outer lamp panel 123b of example 2 are coated with highly reflective mirror surfaces by sputter coating, and the reflectivity is greater than 90%. Through the setting of light reflection district, further improved the light utilization ratio, improved light conversion efficiency.

Example 3

Example 3 differs from example 1 in that the overall diameter of the spiral quartz tube of example 3 is 100mm, the outer diameter of the tube wall is 10mm, the inner diameter is 6mm, and the pitch of the helix is 3 mm.

Example 4

The difference between the embodiment 4 and the embodiment 1 is that the inner panel 123a of the embodiment 4 is a regular pentagon, and the outer panel 123b is a regular decagon.

Example 5

The difference between the embodiment 5 and the embodiment 1 is that the material of the inner lamp panel 123a in the embodiment 5 is copper, and the material of the outer lamp panel 123b is aluminum.

Example 6

Embodiment 6 differs from embodiment 1 in that the pump used in the transmission unit 20 of embodiment 6 is a centrifugal pump.

Example 7

Example 7 is different from example 1 in that example 7 is provided with a temperature control unit 40, and the temperature control range of the semiconductor refrigerator is 0-60 ℃. The fluid reaction device of the utility model realizes the temperature control in the reactor through the upper semiconductor refrigerator above the photoreactor.

Example 8

Example 8 differs from example 1 in that the peristaltic pump has a polytetrafluoroethylene coating on the inside of the tube used. The peristaltic pump of example 8 has better corrosion resistance than example 1 compared to example 1.

Example 9

The difference between the embodiment 9 and the embodiment 1 is that the light-shielding shell 13 is provided with strip-shaped holes, which can improve the heat dissipation rate of the reactor.

Example 10

Embodiment 10 differs from embodiment 1 in that the light source array 124 further includes a conductor plate which is a copper plate, and a ring-shaped conductive groove, and that a plurality of LED lamps of the light source array 124 are electrically connected to the respective copper plates, and the copper plates are inserted into the ring-shaped conductive groove, so that the LED lamps form a series connection.

Comparative example 1

Comparative example 1 is different from example 1 in that the flow-through channel of the photo-reactor is cylindrical in shape, having an inlet for introducing a sample into the inner layer of the photo-reaction tube and an outlet for discharging the sample, and the inlet is provided with an introduction tube reaching the bottom of the photo-reaction tube. The sample introduced from the introduction tube ascends in the photoreaction tube and is discharged from the discharge port. The flow channel of the reactor of comparative example 1 was cylindrical, and the sample could be discharged in a short time or could stay for a long time without being discharged. If the sample is ejected in a short time, it is not converted into a target product because the light irradiation time is short. When the sample stays in the photoreaction tube for a long time, the irradiation time of light becomes long, and the target product is further reacted and converted into a by-product, there are problems such as a low conversion rate of the sample and a high generation rate of the by-product.

Comparative example 2

Comparative example 2 differs from example 1 in that only the outer lamp panel is used. Comparative example 2 using only an outer lamp panel, the luminous flux was significantly reduced, greatly reducing the photoreaction efficiency, compared to the first and second photoradiation sources of example 1.

Comparative example 3

Comparative example 3 differs from example 1 in that the light source array is fixed to the lamp panel. Comparative example 3 is a conventional fixed plate based photoreactor, and replacing photoreactor components is typically an expensive and time consuming process involving long periods of downtime of the photoreactor.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A photo reactor, characterized by comprising at least one flow-through conduit (11), said flow-through conduit (11) being connected to at least one inlet pipe (111) for transporting a reactant and to at least one outlet pipe (112) for outputting a reactant; further comprising an optical radiation source (12) configured to emit light within a defined wavelength range towards the flow-through conduit; the optical radiation sources comprise a first (121) and a second (122) optical radiation source, the first (121) and second (122) optical radiation sources being arranged on the inner and outer sides of the flow-through lumen (11) respectively.

2. A photoreactor according to claim 1, characterized in that the flow-through conduit (11) follows a tortuous path around the vertical central axis (X) of the lumen to form a flow-through path.

3. A photo reactor according to claim 2, characterized in that the flow-through conduit (11) forms a flow path helically around the central axis (X).

4. An optical reactor according to claim 2, characterized in that said first (121) or second (122) optical radiation sources are arranged annularly about said central axis (X).

5. An optical reactor according to claim 1, characterized in that said first (121) or second (122) optical radiation source comprises a fixed plate (123) and a number of light source arrays (124), said light source arrays (124) being detachably connected to said fixed plate (123).

6. A photoreactor according to claim 5, characterised in that the fixing plate (123) is arranged in a polygon.

7. A photoreactor according to claim 5, characterised in that the fixed plate (123) is copper, aluminium, magnesium or alloys thereof with a thermal conductivity of 100W/M-K or more.

8. A photo reactor according to claim 5, characterized in that the array of light sources (124) are connected by circuit connection means.

9. A photoreactor according to claim 8 wherein the array of light sources is comprised of a plurality of LED lamps connected in series.

10. A photo reactor according to claim 5, characterized in that a light reflecting region (125) is provided on the fixing plate (123) at the gap of the light source array (124), the reflectivity of the light reflecting region (125) being equal to or greater than 90%.

11. A photoreactor according to claim 1, characterized in that the flow-through tube (11) is a quartz tube having a light transmission of more than 80%.

12. A photoreactor according to claim 1, characterised in that the flow-through channels (11) have an internal diameter of 1-10 mm.

13. A photoreactor according to claim 3, characterised in that the helical height of the flow-through channels (11) is 80-1000 mm.

14. A photoreactor according to claim 1, characterised in that the photoreactor (10) is externally sheathed with a light-shielding housing (13).

15. A fluid reaction device, comprising a transmission unit (20), the photo reactor (10) according to any one of claims 1 to 14, and a storage unit (30), wherein an inlet pipe (111) and an outlet pipe (112) of the photo reactor (10) are respectively connected to the transmission unit (20) and the storage unit (30), the storage unit (30) is connected to the transmission unit (20) through a transmission pipeline, and the transmission unit (20) is used for transmitting reactants in the storage unit (30) to a circulation pipeline (11) of the photo reactor (10).

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