A device for photothermal catalytic degradation of waste refrigerants

Abstract

The invention discloses a device for photothermal catalytic degradation of waste refrigerant, which relates to the technical field of waste refrigerant treatment, and comprises: a trough concentrator and a tubular reactor; the trough concentrator is used to be fixedly arranged on a workbench, and is used to collect light energy and heat energy of sunlight for the tubular reactor, the tubular reactor is fixedly arranged inside the trough concentrator, the tubular reactor comprises a reaction tube and a catalyst bed, one end of the reaction tube is an air inlet, and is used to introduce mixed gas with the waste refrigerant, the other end of the reaction tube is an air outlet, and is used to discharge the gas after the reaction, a multi-layer catalyst bed is fixedly arranged inside the reaction tube, and the catalyst bed is used to fill the catalyst, so as to overcome the defects of high energy consumption of the existing liquid jet incineration method for degrading waste refrigerant, and the inability of the existing photocatalytic method to quickly and efficiently treat large-flow, high-concentration waste refrigerant, and can efficiently and quickly treat large-flow, high-concentration waste refrigerant, and the energy consumption required for the treatment process is low.

Description

Technical Field

[0001] The present invention relates to the technical field of waste refrigerant treatment, and in particular to a device for photothermal catalytic degradation of waste refrigerants. Background Art

[0002] As people pay more and more attention to environmental issues such as ozone layer depletion and greenhouse effect, the environmental protection requirements for the treatment of waste refrigerants, which are closely related to them, are also increasing.

[0003] At present, the treatment technologies for waste refrigerants mainly include liquid jet incineration, converter incineration, plasma decomposition and supercritical water decomposition. The reaction temperatures of these treatment technologies are basically higher than 1000°C, which are all high-energy-consuming processes and generally have high treatment costs. Photocatalytic methods are also one of the commonly used technologies for treating refrigerants. Photocatalysts are used to reduce the reaction energy barrier and use sunlight or artificial light sources to achieve low-temperature degradation of organic waste refrigerants. However, for the treatment of waste refrigerants with large flow rates and high concentrations, photocatalytic methods under low temperature conditions are difficult to achieve rapid and efficient treatment. The above-mentioned high-energy-consuming processes require high energy consumption and high treatment costs. Summary of the invention

[0004] The purpose of the present invention is to provide a device for photothermal catalytic degradation of waste refrigerants to solve the problems existing in the above-mentioned prior art, which can efficiently and quickly process large-flow and high-concentration waste refrigerants with low energy consumption and low cost.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a device for photothermal catalytic degradation of waste refrigerants, comprising a trough concentrator and a tubular reactor; the trough concentrator is used to be fixedly arranged on a workbench, and is used to collect light energy and heat energy of sunlight for the tubular reactor, and the tubular reactor is fixedly arranged inside the trough concentrator, and the tubular reactor comprises a reaction tube and a catalyst bed, one end of the reaction tube is an air inlet, and is used to introduce a mixed gas with the waste refrigerant, and the other end of the reaction tube is an air outlet, and is used to discharge the gas after the reaction, and multiple layers of the catalyst bed are fixedly arranged inside the reaction tube, and the catalyst bed is used to fill the catalyst, and the catalyst is used to catalyze the photothermal catalytic degradation reaction of the waste refrigerant.

[0007] Preferably, the inner wall of the reaction tube is provided with an anti-corrosion coating, and the anti-corrosion coating is used to prevent the reaction tube from being corroded by the reaction products.

[0008] Preferably, the device for photothermal catalytic degradation of waste refrigerant also includes a quartz tube, which is fixedly mounted on the outside of the reaction tube, and the two ends of the quartz tube are respectively sealed and connected to the two ends of the reaction tube, and the side wall of the quartz tube is connected to a vacuum generator, and the vacuum generator is used to evacuate the annular space between the quartz tube and the reaction tube.

[0009] Preferably, the device for photothermal catalytic degradation of waste refrigerant also includes two flange joints, one of which is fixedly connected to one end of the quartz tube close to the air inlet, and the other is fixedly connected to one end of the quartz tube close to the air outlet, and the two flange joints are sealedly connected to both ends of the quartz tube.

[0010] Preferably, the device for photothermal catalytic degradation of waste refrigerant also includes a photothermal sensor, which is fixedly arranged on the outer wall of the quartz tube and is used for real-time monitoring of the light intensity and temperature received by the quartz tube.

[0011] Preferably, there are multiple photothermal sensors.

[0012] Preferably, the catalyst is a metal quantum cluster with a photothermal catalyst layer coated on the surface.

[0013] Preferably, the tubular reactor further comprises two connecting rods, one end of each of the connecting rods is fixedly connected to one of the flange joints, and the other end of each of the connecting rods is fixedly connected to the trough concentrator.

[0014] Preferably, the device for photothermal catalytic degradation of waste refrigerant also includes a bracket, one end of which is fixedly connected to the bottom of the trough concentrator, and the other end of the bracket is used to be placed on the ground.

[0015] Preferably, there are two brackets, and one end of each of the two brackets is fixedly connected to two ends of the bottom of the trough concentrator, respectively.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention provides a device for photothermal catalytic degradation of waste refrigerants. A trough-type concentrator is set to concentrate the light energy of sunlight, provide illumination under given concentration ratio conditions for a tubular reactor, and a multi-layer catalytic bed is set in the reaction tube, so that large-flow, high-concentration waste refrigerants can be processed efficiently and quickly with low energy consumption and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the device for photothermal catalytic degradation of waste refrigerants provided by the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of a tubular reactor of the device for photothermal catalytic degradation of waste refrigerant provided by the present invention.

[0021] Among them: 1- bracket; 2- trough concentrator; 3- tubular reactor; 4- flange joint; 5- sunlight; 6- connecting rod; 7- air inlet; 8- vacuum generator; 9- annular space; 10- reaction tube; 11- photothermal sensor; 12- quartz tube; 13- selective coating; 14- anti-corrosion coating; 15- catalytic bed; 16- air outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide a device for photothermal catalytic degradation of waste refrigerants to solve the problems existing in the prior art. It can efficiently and quickly treat large-flow, high-concentration waste refrigerants, and the energy consumption required for the treatment process is lower than that required by liquid jet incineration, converter incineration, plasma decomposition and supercritical water decomposition.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-2As shown: This embodiment provides a device for photothermal catalytic degradation of waste refrigerants, including a trough concentrator 2 and a tubular reactor 3; the trough concentrator 2 is used to be fixedly arranged on a workbench, and is used to collect light energy and heat energy of sunlight 5 for the tubular reactor 3, and provide a suitable temperature and lighting environment for the photothermal catalytic reaction carried out in the tubular reactor 3. Under the condition of only using full-spectrum solar energy without additional consumption of fossil energy, the waste refrigerant is degraded by using a photothermal catalyst, which can not only reduce energy consumption, but also save the cost required for degrading the waste refrigerant. The tubular reactor 3 is fixedly arranged inside the trough concentrator 2. The tubular reactor 3 includes a reaction tube 10 and a catalyst bed 15. One end of the reaction tube 10 is an air inlet 7 for introducing a mixed gas with the waste refrigerant, and the other end of the reaction tube 10 is an air outlet 16 for discharging the reacted gas. A multi-layer catalyst bed 15 is fixedly arranged inside the reaction tube 10, which is beneficial to improving the efficiency of the photothermal catalytic reaction of the waste refrigerant. The inside of the catalyst bed 15 is used to fill a photothermal catalyst, and the photothermal catalyst is used to catalyze the photothermal catalytic degradation reaction of the waste refrigerant.

[0026] The inner wall of the reaction tube 10 is provided with an anti-corrosion coating 14, and the anti-corrosion coating 14 is used to prevent the reaction tube 10 from being corroded by the reaction products of the photothermal catalytic reaction.

[0027] The equipment for photothermal catalytic degradation of waste refrigerant also includes a quartz tube 12, which is fixedly mounted on the outside of the reaction tube 10, and the two ends of the quartz tube 12 are respectively sealed and connected to the two ends of the reaction tube 10, and the side wall of the quartz tube 12 is connected to a vacuum generator 8. The vacuum generator 8 is used to evacuate the annular space 9 between the quartz tube 12 and the reaction tube 10 to block the heat exchange between the reaction tube 10 and the external environment, thereby ensuring the temperature environment of the photothermal catalytic reaction. The outer surface of the quartz tube 12 is provided with a selective coating 13, and the selective coating 13 is preferably a ceramic coating, which has high absorptivity and low emissivity, thereby reducing external heat radiation.

[0028] The device for photothermal catalytic degradation of waste refrigerant also includes two flange joints 4, one flange joint 4 is fixedly connected to one end of the quartz tube 12 near the air inlet 7, and the other flange joint 4 is fixedly connected to one end of the quartz tube 12 near the air outlet 16, and the two flange joints 4 are sealed to both ends of the quartz tube 12.

[0029] The device for photothermal catalytic degradation of waste refrigerant also includes a photothermal sensor 11 , which is fixedly arranged on the outer wall of the quartz tube 12 and is used for real-time monitoring of the light intensity and temperature received by the quartz tube 12 .

[0030] The number of the photothermal sensors 11 is plural.

[0031] The catalyst is a metal quantum cluster with a photothermal catalyst layer on the surface, and the metal quantum cluster is filled in the catalyst bed 15 .

[0032] The tubular reactor 3 further includes two connecting rods 6, one end of each connecting rod 6 is fixedly connected to a flange joint 4, and the other end of each connecting rod 6 is fixedly connected to the trough concentrator 2 to support the tubular heat exchanger.

[0033] The device for photothermal catalytic degradation of waste refrigerant also includes a bracket 1, one end of which is fixedly connected to the bottom of the trough concentrator 2, and the other end of the bracket 1 is used to be placed on the ground.

[0034] There are two brackets 1 , and one end of the two brackets 1 is fixedly connected to the two ends of the bottom of the trough concentrator 2 respectively.

[0035] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for photothermal catalytic degradation of waste refrigerants, characterized in that: It comprises a trough concentrator and a tubular reactor; the trough concentrator is used to be fixedly arranged on a workbench, and is used to collect sunlight and heat energy for the tubular reactor; the tubular reactor is fixedly arranged inside the trough concentrator; the tubular reactor comprises a reaction tube and a catalyst bed; one end of the reaction tube is an air inlet, and is used to introduce a waste refrigerant mixed gas; the other end of the reaction tube is an air outlet, and is used to discharge the reacted gas; multiple layers of the catalyst bed are fixedly arranged inside the reaction tube, and the catalyst bed is used to fill a catalyst, and the catalyst is used to catalyze the waste refrigerant to undergo a photothermal catalytic degradation reaction; It also includes a quartz tube, which is fixedly sleeved outside the reaction tube, and two ends of the quartz tube are respectively sealed and connected to two ends of the reaction tube, and a vacuum generator is connected to the side wall of the quartz tube, and the vacuum generator is used to evacuate the annular space between the quartz tube and the reaction tube; It also includes two flange joints, one of which is fixedly connected to one end of the quartz tube close to the air inlet, and the other is fixedly connected to one end of the quartz tube close to the air outlet, and both flange joints are sealedly connected to both ends of the quartz tube; The catalyst is a metal quantum cluster with a photothermal catalyst layer on the surface.

2. The device for photothermal catalytic degradation of waste refrigerant according to claim 1 is characterized in that: The inner wall of the reaction tube is provided with an anti-corrosion coating, and the anti-corrosion coating is used to prevent the reaction tube from being corroded by reaction products.

3. The device for photothermal catalytic degradation of waste refrigerant according to claim 1 is characterized in that: It also includes a photothermal sensor, which is fixedly arranged on the outer side wall of the quartz tube and is used for real-time monitoring of the light intensity and temperature received by the quartz tube.

4. The device for photothermal catalytic degradation of waste refrigerant according to claim 3 is characterized in that: The number of the photothermal sensors is multiple.

5. The device for photothermal catalytic degradation of waste refrigerant according to claim 3 is characterized in that: The tubular reactor further comprises two connecting rods, one end of each connecting rod is fixedly connected to one of the flange joints, and the other end of each connecting rod is fixedly connected to the trough concentrator.

6. The device for photothermal catalytic degradation of waste refrigerant according to claim 1 is characterized in that: It also includes a bracket, one end of which is fixedly connected to the bottom of the trough-type concentrator, and the other end of the bracket is used to be placed on the ground.

7. The device for photothermal catalytic degradation of waste refrigerant according to claim 6 is characterized in that: There are two brackets, and one end of each of the two brackets is fixedly connected to the two ends of the bottom of the trough-type concentrator respectively.

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