Photothermal catalytic reactor

Abstract

The utility model provides a photo-thermal catalytic reactor and belongs to the technical field of photo-thermal catalysis. The hollow channel is arranged in the center of the glass box, the spiral glass tube is wound on the outer side of the hollow channel, the space between the spiral glass tube and an inner tube arranged in the spiral glass tube is filled with a first catalyst and a second catalyst, and air holes are formed in the outer wall of the inner tube in a circular array mode. According to the spiral glass tube, the flowing mode of a gas phase can be optimized, so that the gas phase can flow along the spiral path of the spiral glass tube in the glass box, the retention time of the gas phase in the glass box is prolonged, and the reaction time of the gas phase and a solid phase is effectively prolonged; the photo-thermal catalytic reactor provided by the utility model has the advantages of reasonable structural design, relatively high gas-solid phase reaction efficiency, relatively high gas phase utilization rate and the like. On the premise that the height of the glass box is not increased and the same solid-phase material flowing speed is kept, the reaction degree of the VOCs gas is improved by optimizing the flowing direction of the gas phase.

Description

Technical Field

[0001] The utility model belongs to the technical field of photothermal catalysis, and particularly relates to a photothermal catalytic reactor. Background Art

[0002] During industrial production, VOCs gases are often generated. VOCs refer to an organic substance and are an important part of air pollution. It can not only directly harm the ecological environment and human body, but also generate new pollutants through reactions. It is usually divided into several categories such as non-methane hydrocarbons (abbreviated as NMHCs), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, sulfur-containing organic compounds, etc. VOCs participate in the formation of ozone and secondary aerosols in the atmospheric environment, and have an important impact on regional atmospheric ozone pollution and PM2.5 pollution. Most VOCs have special odors that are unpleasant and have toxicity, irritation, teratogenicity and carcinogenic effects. In particular, benzene, toluene and formaldehyde etc. will cause great harm to human health. VOCs are important precursors of urban haze and photochemical smog, and mainly come from processes such as coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and use. The existing purification effect of VOCs gases is poor, and a photothermal catalytic reactor is often used for purification treatment. However, the existing photothermal catalytic reactor has a relatively single function, cannot increase the light intensity, cannot make VOCs gases catalyze faster and more thoroughly under the action of the catalyst, cannot improve the catalytic efficiency and quality of VOCs gases, and is not convenient for people to operate and use. Therefore, a VOCs photothermal catalytic reactor is provided. Under the existing technology of the photothermal catalytic reactor, the solid catalyst is mixed with gaseous and liquid reactants in the photothermal catalytic reactor for photothermal catalytic reaction. The uneven mixing of the solid catalyst and the gaseous reactant affects the reaction efficiency, and also affects the research conclusion on the fragmentation effect. There is an urgent need for a new type of reactor to solve this problem. Summary of the Utility Model

[0003] The utility model aims at the problems in the existing technology and provides a photothermal catalytic reactor.

[0004] In order to achieve the above object, the technical solution adopted in this application is as follows:

[0005] A photothermal catalytic reactor, comprising a pallet, on the top surface of which a glass box is fixedly installed. The glass box is cylindrical, with a hollow channel penetrating through the upper and lower parts in the middle. Inside the glass box, a spiral glass tube is wound around the hollow channel as the axis; the pitches of the spiral segments in the spiral glass tube are the same, the spiral angles are the same, and the number of spiral turns is not less than one; the spiral glass tube includes a first glass tube segment and a second glass tube segment; a first catalyst is filled in the first glass tube segment, and a second catalyst is filled in the second glass tube segment; the top outlet of the spiral glass tube is communicated with a first air outlet, and the bottom inlet of the spiral glass tube is communicated with an air inlet;

[0006] A groove is formed on the top surface of the pallet, and the bottom surface of the inner wall of the groove is fixedly connected with an exhaust disc. Exhaust holes are circularly arranged on the exhaust disc, and the bottom surface of the exhaust disc is communicated with an air pump outlet, and the air inlet of the air pump is communicated with the flue outlet of an incinerator.

[0007] Preferably, a reflector is laid on the side surface of the hollow channel.

[0008] Preferably, an activated carbon adsorption layer is fixedly connected to the top of the inner wall of the groove formed on the top surface of the pallet.

[0009] Preferably, through holes are arranged at the gaps between the surface of the hollow channel and the spiral glass tube; the top of the hollow channel passes through the top surface of the glass box and is communicated with a second air outlet.

[0010] Preferably, an inner tube is arranged inside the spiral glass tube, and the inner tube is fixedly connected to the tail end of the spiral glass tube. Air holes are circularly arranged on the outer wall of the inner tube. The first catalyst is filled between the spiral glass tube and the inner tube at the first glass tube segment; the second catalyst is filled between the spiral glass tube and the inner tube at the second glass tube segment.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] In the photothermal catalytic reactor of the present utility model, through the arrangement of the glass box, the hollow channel arranged in the center of the glass box, the spiral glass tube wound outside the hollow channel, and the filling of the first catalyst and the second catalyst between the inner tube arranged inside the spiral glass tube and the spiral glass tube, and the arrangement of the air holes circularly arranged on the outer wall of the inner tube, the flow mode of the gas phase can be optimized, so that the gas phase can flow along the spiral path of the spiral glass tube in the glass box, increasing the residence time of the gas phase in the glass box and effectively increasing the reaction time between the gas phase and the solid phase; the provided photothermal catalytic reactor has the advantages of reasonable structural design, high gas-solid reaction efficiency and high gas phase utilization rate. Without increasing the height of the glass box and keeping the same flow rate of the solid phase material, the present application improves the reaction degree of VOCs gas by optimizing the flow direction of the gas phase. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is an internal structural schematic diagram of the spiral glass tube at the first glass tube section;

[0016] Figure 3 It is an internal structural schematic diagram of the spiral glass tube at the second glass tube section;

[0017] In the above figures, 1, supporting plate; 2, glass box; 3, hollow channel; 4, spiral glass tube; 5, first catalyst; 6, second catalyst; 7, first air outlet; 8, air inlet; 9, exhaust tray; 10, air pump; 11, incinerator; 12, activated carbon adsorption layer; 13, second air outlet; 14, inner tube. Specific embodiments

[0018] In order to be able to more clearly understand the above objects, features and advantages of the present invention, the following further illustrates the present invention in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0019] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0020] Embodiment 1, as Figures 1 to 3As shown in the figure, a photothermal catalytic reactor of the present application includes a support plate 1. On the top surface of the support plate 1, a glass box 2 is fixedly installed. The glass box 2 is cylindrical. A hollow channel 3 that is open top and bottom is provided in the middle of the glass box 2. Inside the glass box 2, a spiral glass tube 4 is wound around the hollow channel 3 as the axis; the inner wall of the spiral glass tube 4 is in contact with the outer wall of the hollow channel 3; the pitches of the spiral segments in the spiral glass tube 4 are the same, the spiral angles are the same, and the number of spiral turns is not less than one; in this embodiment, the number of spiral turns is four; the spiral glass tube 4 includes a first glass tube section and a second glass tube section; the first glass tube section and the second glass tube section are integrally formed by firing; a first catalyst 5 is filled in the first glass tube section, and a second catalyst 6 is filled in the second glass tube section; the top outlet of the spiral glass tube 4 is hermetically connected to a first air outlet 7, and the bottom inlet of the spiral glass tube 4 is hermetically connected to an air inlet 8; during use, VOCs gas is pumped in from the air inlet 8 through an external pump, passes through the spiral glass tube 4 and first passes through the first glass tube section and the second glass tube section, and successively contacts and reacts with the first catalyst 5 filled in the first glass tube section and the second catalyst 6 respectively; the setting of the spiral glass tube 4 can optimize the flow mode of the gas phase, so that the gas phase can flow along the spiral path of the spiral glass tube 4 in the glass box 2, increasing the residence time of the gas phase in the glass box 2 and effectively increasing the reaction time between the gas phase and the solid phase; the photothermal catalytic reactor provided by the present invention has the advantages of reasonable structural design, high gas-solid reaction efficiency, and high gas phase utilization rate. The present application can improve the reaction degree of VOCs gas by optimizing the gas phase flow direction without increasing the height of the glass box 2 and while maintaining the same solid phase material flow rate;

[0021] A groove is provided on the top surface of the support plate 1. On the bottom surface of the inner wall of the groove, an exhaust disk 9 is fixedly connected. Exhaust holes are circularly arranged on the exhaust disk 9. The bottom surface of the exhaust disk 9 is connected to the air outlet of an air pump 10 through an air path pipe passing through the left side surface of the support plate 1. The air inlet of the air pump 10 is connected to the flue outlet of an incinerator 11 through an air path pipe. During use, the flue gas in the incinerator 11 is sent by the air pump 10 to the groove. A part of the flue gas enters the glass box 2 and surrounds the outside of the spiral glass tube 4, and another part of the flue gas enters the hollow channel 3 to heat the inside of the spiral glass tube 4, making the VOCs gas in the spiral glass tube 4 evenly heated; in addition, the setting of the spiral glass tube 4 also improves the heat energy utilization rate of the flue gas and reduces the energy consumption required to generate the flue gas;

[0022] A reflective plate is laid on the side surface of the hollow channel 3; the setting of the reflective plate enables sunlight to shine on the side of the spiral glass tube 4 close to the hollow channel 3;

[0023] An activated carbon adsorption layer 12 is fixedly connected to the top of the inner wall of the groove provided on the top surface of the support plate 1; the activated carbon adsorption layer 12 adsorbs solid particles in the flue gas, etc.;

[0024] At the gap where the surface of the hollow channel 3 is wound with the spiral glass tube 4; specifically, a plurality of through holes are provided at the outer side surface of the hollow channel 3 where the spiral glass tube 4 is not wound; the top of the hollow channel 3 passes through the top surface of the glass box 2 and is communicated with a second air outlet 13; the second air outlet 13 discharges the flue gas that has passed through the spiral glass tube 4 after heating.

[0025] An inner tube 14 is arranged inside the spiral glass tube 4. The inner tube 14 is fixedly connected to the tail end of the spiral glass tube 4. The outer wall of the inner tube 14 is circularly arrayed with ventilation holes. The first catalyst 5 is filled between the spiral glass tube 4 and the inner tube 14 at the first glass tube section; the second catalyst 6 is filled between the spiral glass tube 4 and the inner tube 14 at the second glass tube section.

[0026] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A photothermal catalytic reactor, characterized in that: The invention comprises a support plate (1), a glass box (2) is fixedly mounted on the top surface of the support plate (1), the glass box (2) is cylindrical, a hollow channel (3) which is transparent from top to bottom is arranged in the middle of the glass box (2), a spiral glass tube (4) is wound around the hollow channel (3) inside the glass box (2); the pitch of each spiral section in the spiral glass tube (4) is consistent, the spiral angle is consistent, and the number of spiral turns is not less than one turn; the spiral glass tube (4) comprises a first glass tube section and a second glass tube section; the first glass tube section is filled with a first catalyst (5), and the second glass tube section is filled with a second catalyst (6); the top outlet of the spiral glass tube (4) is connected to a first air outlet (7), and the bottom inlet of the spiral glass tube (4) is connected to an air inlet (8); The top surface of the support plate (1) is provided with a groove, the bottom surface of the inner wall of the groove is fixedly connected to an exhaust disk (9), a circular array of exhaust holes is provided on the exhaust disk (9), the bottom surface of the exhaust disk (9) is connected to an air outlet of an air pump (10), and the air inlet of the air pump (10) is connected to a flue outlet of an incinerator (11).

2. A photothermal catalytic reactor according to claim 1, characterized in that: The side surface of the hollow channel (3) is paved with a reflective plate.

3. A photothermal catalytic reactor according to claim 1, characterized in that: An activated carbon adsorption layer (12) is fixedly connected to the top of the inner wall of the groove formed on the top surface of the support plate (1).

4. A photothermal catalytic reactor according to claim 1, characterized in that: A through hole is provided at the gap between the surface of the hollow channel (3) and the spiral glass tube (4) that is wound around it; and the top of the hollow channel (3) passes through the top surface of the glass box (2) and is in communication with a second air outlet (13).

5. A photothermal catalytic reactor according to claim 1, characterized in that: The spiral glass tube (4) has an inner tube (14) built therein, the inner tube (14) being fixedly connected to the rear end of the spiral glass tube (4), the outer wall of the inner tube (14) having a circular array of air holes, the first catalyst (5) being filled between the spiral glass tube (4) and the inner tube (14) at the first glass tube section; and the second catalyst (6) being filled between the spiral glass tube (4) and the inner tube (14) at the second glass tube section.

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