Miniature photo-thermal reactor

Abstract

The utility model relates to the technical field of photo-thermal reaction, and provides a miniature photo-thermal reactor which comprises a reactor body, the reactor body is provided with a reaction chamber used for containing a catalyst, the upper end face of the reactor body is provided with a cavity opening communicated with the reaction chamber, and the reactor body is provided with a transparent plate sealed at the cavity opening. An air inlet pipe and an air outlet pipe are fixedly arranged on the reactor body in a penetrating manner, the air inlet pipe and the air outlet pipe are both communicated with the reaction chamber, a heating piece is arranged in the reactor, the heating piece is arranged by avoiding the air inlet pipe and the air outlet pipe, the heating piece comprises a plurality of heating rods, and the plurality of heating rods are distributed around the axis of the reaction chamber at intervals. The small-sized photo-thermal reactor has the beneficial effects that the small-sized photo-thermal reactor can be conveniently heated, so that internal reaction can be conveniently checked, and small-sized experiment practicability can be met.

Description

Technical Field

[0001] This application relates to the technical field of photothermal reactions, and particularly to a micro photothermal reactor. Background Art

[0002] Photocatalysis and thermal catalysis are two important fields in the discipline of catalysis. In the field of photocatalysis, the activity test of a catalyst is generally realized through a photocatalytic reaction kettle. Such a reactor is provided with a quartz window on the top of the kettle for the entry of a light source. In the field of thermal catalysis, gas-solid catalytic reaction is one of the most common thermal catalytic reactions. The activity test of such a reaction is generally carried out on a fixed-bed reactor. A fixed-bed reactor generally uses a high-temperature electric heating furnace equipped with a programmed temperature controller. The use of the heating furnace is to ensure that a relatively high temperature required for the reaction can be reached, and the use of the programmed temperature controller enables the reaction temperature to be conveniently adjusted in real time according to the requirements of the reaction. In recent years, it has been found that due to the synergistic effect of light and heat, when a light source is introduced during the thermal catalytic process, many reactions exhibit different performances from those of thermal catalysis.

[0003] Since the existing photothermal reactors are generally large at present, a heating furnace is equipped for heating. When the experiment does not require such a large reactor, a small reactor that can carry out preliminary photothermal reactions is needed. However, for such a small photothermal reactor, its overall volume is relatively small. If the thermal reaction is also heated by a heating furnace, and the heating furnace is relatively large, the two are not well-matched, which is inconvenient during the experiment and it is not easy to observe the corresponding experimental effects. Therefore, further improvement is needed. Summary of the Utility Model

[0004] In order to facilitate the heating of such a small photothermal reactor to view the internal reaction and meet the practical needs of small-scale experiments, this application provides a micro photothermal reactor.

[0005] A micro photothermal reactor provided by this application adopts the following technical solutions:

[0006] A micro photothermal reactor includes a reactor body. The reactor body is provided with a reaction chamber for accommodating a catalyst. An orifice communicating with the reaction chamber is opened on the upper end surface of the reactor body. The reactor body is provided with a transparent plate sealed to the orifice. The reactor body is fixedly penetrated with an inlet pipe and an outlet pipe, and both the inlet pipe and the outlet pipe communicate with the reaction chamber. A heating member is arranged inside the reactor, and the heating member is arranged to avoid the inlet pipe and the outlet pipe. The heating member includes a plurality of heating rods, and the plurality of heating rods are spaced apart around the axis of the reaction chamber.

[0007] By adopting the above technical solution, heating is carried out by a heating rod. Since the heating rod converts electrical energy into heat energy, it is relatively safe and can be made relatively small in size. It can be applied to a small photothermal reactor for heating, so as to facilitate the heating of this small photothermal reactor. Through the transparent plate, the internal reaction can be viewed to meet the practical needs of small experiments. And by setting a number of heating rods and adopting a dispersed heating method, the reaction chamber can be heated evenly, reducing the possibility of uneven heating.

[0008] Preferably, both the inlet pipe and the outlet pipe are arranged on the side wall of the reactor body.

[0009] By adopting the above technical solution, both the inlet pipe and the outlet pipe are arranged on the side wall of the reactor body to reduce the occupation of the upper cavity opening, so that the range of the cavity opening is relatively large, facilitating light to irradiate the catalyst in the reaction chamber or facilitating the viewing of the internal reaction effect.

[0010] Preferably, the reactor body is provided with an air inlet and an air outlet for connecting the inlet pipe and the outlet pipe respectively. The reactor body is provided with a first gas transmission channel communicating with the air inlet around its own axis. The first gas transmission channel is arranged between the reaction chamber and the heating rod. The reactor body is provided with an air inlet chamber communicating with the first gas transmission channel at the top of the reaction chamber. The air inlet chamber is arranged below the transparent plate.

[0011] By adopting the above technical solution, by setting a first gas transmission channel and arranging the first gas transmission channel between the reaction chamber and the heating plate, the gas input through the inlet pipe is first heated by the outer ring of heating rods and then enters the reaction chamber through the air inlet chamber for reaction. By providing the first gas transmission channel and the air inlet chamber, the flow path of the input gas is lengthened, so that its flow rate is relatively slow, which is more conducive to the reaction with the catalyst.

[0012] Preferably, a second gas transmission channel is arranged around the axis of the reactor body at the bottom of the reaction chamber. The outer diameter of the second gas transmission channel is smaller than the outer diameter of the first gas transmission channel. The inner diameter of the second gas transmission channel is larger than the diameter of the reaction chamber. The second gas transmission channel communicates with the air outlet.

[0013] By adopting the above technical solution, the outer diameter of the second gas transmission channel is smaller than the outer diameter of the first gas transmission channel to reduce the connection between the two and affect the air intake. And by setting the second gas transmission channel, the reacted gas can enter the outlet pipe relatively slowly. Among them, the inner diameter of the second gas transmission channel is larger than the diameter of the reaction chamber, so that the reacted gas flows in a diffused manner, reducing the possibility of incomplete reaction.

[0014] Preferably, a sieve plate for placing the catalyst is arranged at the bottom of the reaction chamber.

[0015] By adopting the above technical solution, a sieve plate is provided to reduce the possibility that a part of the catalyst is carried into the outlet pipe when the gas passes through the catalyst, resulting in blockage.

[0016] Preferably, a temperature-measuring thermocouple penetrates through the lower end surface of the reactor body, and the temperature-measuring thermocouple extends to the lower surface of the sieve plate and abuts against the sieve plate.

[0017] By adopting the above technical solution, a temperature-measuring thermocouple is provided to measure the temperature in the reaction chamber for feedback control to achieve stable temperature in the reaction chamber.

[0018] Preferably, the height of the upper end surface of the heating rod is lower than the height of the bottom of the cavity opening.

[0019] By adopting the above technical solution, by making the height of the upper end surface of the heating rod lower than the height of the bottom of the cavity opening, the occupation of the cavity opening space is reduced.

[0020] Preferably, the upper end surface of the reactor body is detachably connected with an upper cover plate. An inspection opening is formed through the upper cover plate. The upper cover plate is fixedly connected with the transparent plate, and a sealing ring is wound around the lower surface of the transparent plate.

[0021] By adopting the above technical solution, the upper cover plate is disassembled to facilitate putting the catalyst into the reaction chamber or replacing the catalyst.

[0022] In summary, the present utility model has the following beneficial effects:

[0023] 1. Heating is carried out by the heating rod. Since the heating rod converts electrical energy into heat energy, it is relatively safe, and the size can be made relatively small, which can be applied to small photothermal reactors for heating, so as to facilitate heating of such small photothermal reactors. Through the transparent plate, the internal reaction can be viewed to meet the needs of small-scale experiments. And by providing a plurality of heating rods and adopting a dispersed heating method, the reaction cavity is heated evenly, reducing the possibility of uneven heating.

[0024] 2. By providing a first gas transmission channel and a second gas transmission channel, the flow path of the gas is lengthened, so that the gas flows in a diffused manner, which is beneficial to the reaction with the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of an embodiment of the present application;

[0026] Figure 2 is the sectional structural schematic diagram of an embodiment of the present application;

[0027] Figure 3It is a schematic structural diagram of the lower cover plate in the embodiment of the present application.

[0028] Explanation of reference numerals: 1. Reactor body; 11. Reaction chamber; 111. Sieve plate; 12. Chamber opening; 13. Transparent plate; 14. Sealing ring; 15. First installation groove; 16. Second installation groove; 17. Air inlet; 18. Air outlet; 19. First gas transmission channel; 2. Upper cover plate; 21. Inspection port; 3. Bolt; 4. Lower cover plate; 5. Temperature-measuring thermocouple; 6. Inlet pipe; 7. Outlet pipe; 8. Air inlet chamber; 9. Second gas transmission channel; 10. Heating element. Specific embodiments

[0029] The following will be further described in detail with reference to the attached Figures 1-3 drawings to further illustrate the present application.

[0030] The embodiment of the present application discloses a micro photo-thermal reactor.

[0031] Embodiment:

[0032] A micro photo-thermal reactor, referring to Figure 1 、 Figure 2 , includes a reactor body 1. A reaction chamber 11 for accommodating a catalyst is provided inside the reactor body 1. A chamber opening 12 communicating with the reaction chamber 11 is formed on the upper end surface of the reactor body 1. The reactor body 1 is provided with a transparent plate 13 sealed to the chamber opening 12. In this embodiment, the diameter of the chamber opening 12 is larger than the diameter of the reaction chamber 11. The transparent plate 13 is made of quartz material and has the characteristic of high temperature resistance. A sealing ring 14 is provided on the inner bottom wall of the transparent plate 13. A first installation groove 15 for installing the sealing ring 14 is provided around the bottom inner wall of the chamber opening 12.

[0033] The upper end surface of the reactor body 1 abuts against an upper cover plate 2. Bolts 3 are threadedly penetrated through the upper cover plate 2. The bolts 3 are threadedly connected to the reactor body 1. A plurality of bolts 3 are arranged at intervals along the axis of the upper cover plate 2. An inspection port 21 is formed through the upper cover plate 2 along its axis. In this embodiment, the inspection port 21 is flared in a direction away from the transparent plate 13, and the diameter of the inspection port 21 at the lower end is smaller than the diameter of the transparent plate 13. The lower surface of the upper cover plate 2 is fixedly connected to the upper surface of the transparent plate 13, which can improve the pressing force on the transparent plate 13 during the installation of the upper cover plate 2 on the reactor body 1 and reduce the possibility of gas leakage.

[0034] Referring to Figure 2 、 Figure 3 , the lower end surface of the reactor body 1 abuts against a lower cover plate 4. The lower cover plate 4 is also threadedly connected to the reactor body 1 through bolts 3. It should be noted that the bolts 3 are arranged on the outer peripheral wall of the reactor body 1.

[0035] The reactor body 1 is fixedly connected to a sieve plate 111 on the bottom inner wall of the reaction chamber 11. A second installation groove 16 communicating with the reaction chamber 11 is provided on the lower end face of the reactor body 1. The second installation groove 16 extends to the lower end face of the lower cover plate 4. The diameter of the second installation groove 16 is larger than the diameter of the reaction chamber 11. The reactor body 1 is provided with a temperature-measuring thermocouple 5. The temperature-measuring thermocouple 5 is fixedly connected in the second installation groove 16. The temperature-measuring thermocouple 5 extends to the lower surface of the sieve plate 111 and abuts against the sieve plate 111. The upper end face of the temperature-measuring thermocouple 5 abuts against the inner top of the second installation groove 16.

[0036] An air inlet pipe 6 and an air outlet pipe 7 are provided on the outer peripheral wall of the reactor body 1. An air inlet 17 communicating with the air inlet pipe 6 is provided on the outer peripheral wall of the reactor body 1. An air outlet 18 communicating with the air outlet pipe 7 is provided on the outer peripheral wall of the lower cover plate 4. An air inlet chamber 8 is provided at the top of the reaction chamber 11. The air inlet chamber 8 is arranged below the transparent plate 13. A first air delivery channel 19 communicating with the air inlet chamber 8 and the air inlet 17 is provided in the reactor body 1 around its own axis. In this embodiment, the inner diameter of the first air delivery channel 19 is larger than the diameter of the reaction chamber 11.

[0037] A second air delivery channel 9 is provided on the inner wall of the second installation groove 16 around the axis of the reactor body 1 itself. The second air delivery channel 9 communicates with the reaction chamber 11 and the air outlet 18. In this embodiment, the outer diameter of the second air delivery channel 9 is smaller than the outer diameter of the first air delivery channel 19, and the inner diameter of the second air delivery channel 9 is larger than the diameter of the reaction chamber 11.

[0038] A heating element 10 is provided inside the reactor. In this embodiment, the heating element 10 is arranged to avoid the air inlet pipe 6 and the air outlet pipe 7. The heating element 10 includes a plurality of heating rods, specifically three heating plates. The three heating rods are spaced apart around the axis of the reaction chamber 11. The heating rods are arranged between the outer peripheral wall of the reaction body and the first air delivery channel 19, that is, the first air delivery channel 19 is arranged between the reaction chamber 11 and the heating rods to heat the gas in the first air delivery channel 19. A third installation groove for installing the heating element 10 is provided on the lower end face of the lower cover plate 4. The third installation groove extends into the reactor body 1. The height of the inner wall of the top of the third installation groove is lower than the height of the inner wall of the bottom of the first installation groove 15.

[0039] The implementation principle of a micro photo-thermal reactor in this application embodiment is as follows: heating is carried out by heating rods. Since the heating rods convert electrical energy into heat energy, it is relatively safe and the size can also be made relatively small. It can be applied to small photo-thermal reactors for heating, so as to facilitate the heating of such small photo-thermal reactors. The internal reaction can be viewed through the transparent plate 13 to meet the practical needs of small experiments. And by providing a plurality of heating rods and adopting a dispersed heating method, the reaction cavity can be heated evenly to reduce the possibility of uneven heating.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A micro photothermal reactor, characterized in that: The invention comprises a reactor body (1), wherein the reactor body (1) is provided with a reaction chamber (11) for accommodating a catalyst, wherein an upper end surface of the reactor body (1) is provided with a cavity (12) connected to the reaction chamber (11), and the reactor body (1) is provided with a transparent plate (13) sealed to the cavity (12); an air inlet pipe (6) and an air outlet pipe (7) are fixedly penetrated through the reactor body (1), and the air inlet pipe (6) and the air outlet pipe (7) are both connected to the reaction chamber (11); a heating element (10) is provided inside the reactor, and the heating element (10) is arranged away from the air inlet pipe (6) and the air outlet pipe (7), and the heating element (10) comprises a plurality of heating rods, and the plurality of heating rods are spaced and distributed around the axis of the reaction chamber (11).

2. A micro photothermal reactor according to claim 1, characterized in that: The air inlet pipe (6) and the air outlet pipe (7) are both arranged on the side wall of the reactor body (1).

3. A micro photothermal reactor according to claim 2, characterized in that: The reactor body (1) is provided with an air inlet (17) and an air outlet (18) for connecting the air inlet pipe (6) and the air outlet pipe (7) respectively. A first air supply channel (19) connected to the air inlet (17) is provided in the reactor body (1) around its axis. The first air supply channel (19) is arranged between the reaction chamber (11) and the heating rod. The reactor body (1) is located at the top of the reaction chamber (11) and is provided with an air inlet chamber (8) connected to the first air supply channel (19). The air inlet chamber (8) is arranged below the transparent plate (13).

4. A micro photothermal reactor according to claim 3, characterized in that: The reactor body (1) is located at the bottom of the reaction chamber (11) and is provided with a second gas supply channel (9) around its own axis. The outer diameter of the second gas supply channel (9) is smaller than the outer diameter of the first gas supply channel (19), and the inner diameter of the second gas supply channel (9) is larger than the diameter of the reaction chamber (11). The second gas supply channel (9) is connected to the gas outlet (18).

5. A micro photothermal reactor according to claim 1, characterized in that: The bottom of the reaction chamber (11) is provided with a sieve plate (111) for placing the catalyst.

6. A micro photothermal reactor according to claim 5, characterized in that: A temperature measuring thermocouple (5) is provided through the lower end surface of the reactor body (1), and the temperature measuring thermocouple (5) extends to the lower surface of the sieve plate (111) and abuts against the sieve plate (111).

7. A micro photothermal reactor according to claim 1, characterized in that: The height of the upper end surface of the heating rod is lower than the height of the bottom of the cavity opening (12).

8. A micro photothermal reactor according to claim 3, characterized in that: The upper end surface of the reactor body (1) is detachably connected to an upper cover plate (2), the upper cover plate (2) is provided with an inspection port (21), the upper cover plate (2) is fixedly connected to the transparent plate (13), and a sealing ring (14) is provided around the lower surface of the transparent plate (13).

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