A reaction device for catalyzing carbon dioxide reduction

Abstract

The present invention provides a reaction device for catalyzing carbon dioxide reduction, which comprises a first container. The first container includes a reactor. A reaction chamber is provided in the reactor. A gas inlet and a gas outlet are provided on the reactor. The gas inlet and the gas outlet communicate with the reaction chamber respectively and the gas inlet and the gas outlet communicate with each other through the reaction chamber. A catalyst carrier is provided in the reaction chamber. The catalyst carrier divides the reaction chamber into an inlet part and an outlet part. The inlet part is close to the gas inlet and far from the gas outlet. The outlet part is close to the gas outlet and far from the gas inlet. The present invention effectively improves the efficiency of catalyzing CO2 reduction.

Description

Technical Field

[0001] The present invention relates to the field of chemical equipment, and more specifically, to a reaction device for catalyzing the reduction of carbon dioxide (CO₂). Background Art

[0002] With the acceleration of the industrialization process, the earth's ecological environment has been severely damaged, and the greenhouse effect has the greatest impact. The continuous increase in the content of carbon dioxide in the atmosphere is one of the main reasons for the greenhouse effect. It is reported that the current concentration of carbon dioxide in the atmosphere is about 350 ppm, and the world currently emits about 2 billion tons of carbon dioxide per year. If emissions continue at this rate, it is expected that the concentration of carbon dioxide in the atmosphere will reach 560 ppm by 2030, resulting in an increase in the average temperature of the earth by 1.5 - 4.5 °C. The rise in temperature will cause drying in subtropical regions, increased rainfall in high-latitude regions, a reduction in the ice-covered area in the ocean, and the early melting of snow and ice. In order to protect the earth's environment on which humans depend for survival, humans have to consider carbon emission reduction or carbon cycle measures.

[0003] The resource utilization of carbon dioxide mainly includes the following aspects: (1) conversion of carbon dioxide into carbon nanomaterials; (2) conversion of carbon dioxide into higher-value-added chemicals through electrochemistry, photochemistry or photoelectrochemistry; (3) conversion of carbon dioxide into bioactive substances such as feed and fertilizers through microorganisms, enzymes and microalgae, etc.; (4) mineralization of carbon dioxide into cement, ash, etc. The research on the electrochemistry, photochemistry and photoelectrochemistry reduction of carbon dioxide has been a relatively popular direction in recent years.

[0004] Therefore, the technical personnel in this field are committed to developing an effective reaction device for improving the efficiency of catalyzing carbon dioxide reduction. Summary of the Invention

[0005] Aiming at the problems in the prior art, the purpose of the present invention is to provide a reaction device for catalyzing carbon dioxide reduction, which effectively improves the reaction efficiency.

[0006] According to the present invention, there is provided a reaction device for catalyzing carbon dioxide reduction, including a first container. The first container includes a reactor, and a reaction chamber is provided in the reactor. A gas inlet and a gas outlet are provided on the reactor. The gas inlet and the gas outlet are respectively communicated with the reaction chamber and are communicated with each other through the reaction chamber. A catalyst carrier is provided in the reaction chamber, and the catalyst carrier divides the reaction chamber into an inlet part and an outlet part. The inlet part is close to the gas inlet and far from the gas outlet, and the outlet part is close to the gas outlet and far from the gas inlet.

[0007] Preferably, the shape of the catalyst carrier is a porous disc shape.

[0008] Preferably, it further includes a light source, which is arranged above the reactor, and the light emitted by the light source passes through the reactor and enters the reaction chamber to catalyze the gas reduction reaction.

[0009] Preferably, the first container further includes a housing, a constant temperature chamber is arranged inside the housing, a constant temperature liquid inlet and a constant temperature liquid outlet are arranged on the housing, the constant temperature liquid inlet and the constant temperature liquid outlet are respectively communicated with the constant temperature chamber and are communicated with each other through the constant temperature chamber, and the reactor is arranged in the constant temperature chamber.

[0010] Preferably, it further includes a second container, the second container is connected to the reactor of the first container and is communicated with the reaction chamber of the reactor, a first electrode is further arranged in the reaction chamber of the reactor, the first electrode is connected to the catalyst carrier, a second electrode is further arranged in the second container, and a proton exchange membrane is arranged between the second container and the reaction chamber.

[0011] Preferably, electrolytes are arranged in both the second container and the reaction chamber.

[0012] Preferably, the first electrode and / or the second electrode is made of a Pt sheet.

[0013] Preferably, the catalyst carrier is made of an electrode material.

[0014] Preferably, the second container and the reaction chamber are connected by two flanges.

[0015] Preferably, the proton exchange membrane is arranged between the two flanges.

[0016] A reaction device for catalyzing carbon dioxide reduction according to the present invention effectively improves the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0018] Figure 1 is a schematic structural diagram of a reaction device for catalyzing carbon dioxide reduction according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of a reaction device for photocatalytic or photoelectrocatalytic carbon dioxide reduction according to an embodiment of the present invention;

[0020] Figure 3 is a top view structural diagram of a reactor of a reaction device for photocatalytic or photoelectrocatalytic carbon dioxide reduction according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural view of a reactor of a reaction device for electrocatalytic or photoelectrocatalytic carbon dioxide reduction according to an embodiment of the present invention;

[0022] Figure 5 is a schematic side view of a reactor of a reaction device for electrocatalytic or photoelectrocatalytic carbon dioxide reduction according to an embodiment of the present invention;

[0023] Figure 6 is a schematic flange view of a reactor of a reaction device for catalytic carbon dioxide reduction according to an embodiment of the present invention;

[0024] Figure 7 is a schematic flange cover view of a reactor of a reaction device for catalytic carbon dioxide reduction according to an embodiment of the present invention. Detailed Embodiments

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures and thus their repetitive description will be omitted.

[0026] As Figure 1 shown in

[0027] in an embodiment of the present invention, a reaction device for catalytic carbon dioxide reduction is provided, which includes a first container, and the first container includes a reactor 1.

[0028] A reaction chamber is provided inside the reactor 1. The reaction chamber is a cavity formed inside the reactor 1 and is preferably formed by the inner wall. The reactor 1 is provided with a gas inlet 2 and a gas outlet 3.

[0029] The gas inlet 2 and the gas outlet 3 communicate with the reaction chamber respectively and communicate with each other through the reaction chamber. During the reaction, CO2 gas enters from the gas inlet 2, reacts in the reaction chamber, and is discharged from the gas outlet 3. The gas inlet 2 and the gas outlet 3 are arranged on both sides of the reactor 1 and are distributed vertically and horizontally respectively.

[0030] A catalyst carrier 4 is provided in the reaction chamber, which is preferably detachably connected and is loaded with a catalyst for reducing CO2. The catalyst carrier 4 is provided with a catalyst, which can catalyze the reduction reaction of CO2 gas.

[0031] The catalyst carrier 4 divides the reaction chamber into an inlet part and an outlet part. The inlet part is close to the gas inlet 2 and far from the gas outlet 3, while the outlet part is close to the gas outlet 3 and far from the gas inlet 2. That is, the gas entering from the gas inlet 2 needs to pass through the catalyst carrier 4 and then make full contact with the porous disc carrier loaded with the catalyst. After sufficient reaction, it is discharged from the gas outlet 3. After discharge, it can be directly introduced into a detection instrument, collected, or subjected to other treatments according to the reaction type and actual needs.

[0032] The embodiment of the present invention can be applied to three types of catalytic reduction reactions through a combinable reaction vessel, and can effectively improve the efficiency of the catalytic reduction reaction of carbon dioxide.

[0033] The catalytic reduction reaction of carbon dioxide used in the embodiment of the present invention mainly includes photocatalytic reduction reaction of carbon dioxide, electrocatalytic reduction reaction of carbon dioxide, and photoelectrocatalytic reduction reaction of carbon dioxide.

[0034] When applicable to the photocatalytic reduction reaction of carbon dioxide, as Figure 2 shown, in the embodiment of the present invention, it further includes a light source 5. The light source 5 is arranged above the reactor 1.

[0035] The light emitted by the light source 5 passes through the reactor 1 and enters the reaction chamber to catalyze the gas reduction reaction. Preferably, the reactor 1 is provided with a transparent cover, and preferably, it is detachably connected to facilitate the entry of light.

[0036] And in combination with as Figure 3 shown, in the embodiment of the present invention, the first container further includes a housing 6. A constant temperature chamber is provided inside the housing 6, and a constant temperature liquid inlet 7 and a constant temperature liquid outlet 8 are provided on the housing 6. The constant temperature liquid inlet 7 and the constant temperature liquid outlet 8 are respectively communicated with the constant temperature chamber, and the constant temperature liquid inlet 7 and the constant temperature liquid outlet 8 are communicated with each other through the constant temperature chamber. The constant temperature liquid inlet 7 and the constant temperature liquid outlet 8 are arranged on both sides of the housing 6 and are distributed vertically.

[0037] The reactor 1 is arranged in the constant temperature chamber. By allowing the coolant or constant temperature liquid to enter the constant temperature chamber inside the housing 6, the temperature of the reactor 1 can be ensured, the reaction efficiency can be improved, and the catalyst poisoning caused by the continuous irradiation of the light source, which may affect the progress of the reaction, can be prevented.

[0038] When applicable to the electrocatalytic reduction reaction of carbon dioxide, as Figure 4 and 5 shown, in the embodiment of the present invention, it further includes a second container 10.

[0039] The second container 10 is connected to the reactor 1 of the first container and is communicated with the reaction chamber of the reactor 1. Preferably, it is communicated through a cylindrical channel.

[0040] As Figure 4As shown in the figure, a first electrode 9 is also provided in the reaction chamber of the reactor 1. The first electrode 9 is connected to the catalyst support 4. As Figure 5 As shown in the figure, a second electrode is also provided in the second container 10, and a proton exchange membrane 12 is provided between the second container and the reaction chamber.

[0041] Preferably, electrolytes are provided in both the second container 10 and the reaction chamber. The second container 10 mainly functions as an electric current loop. At this time, the same electrolyte as that in the reactor 1 is filled in the second container 10, and electrodes are also placed therein.

[0042] The catalyst support 4 is made of an electrode material, that is, an electrode material loaded with a catalyst.

[0043] The first electrode 9 and / or the second electrode is made of a Pt sheet. Preferably, a Pt sheet is pre-placed at the adjacent edge position of the porous disk-shaped catalyst support, and the outside of the Pt sheet is designed as an electrode, which can be directly connected to an electrochemical workstation. When performing electrocatalytic CO2 reduction or photoelectrocatalytic CO2 reduction, the prepared electrode material can be directly placed on the Pt sheet.

[0044] As Figure 5 、 6 and 7, preferably, the channel between the second container 10 and the reaction chamber is connected by two flanges 13. The proton exchange membrane 12 is provided between the two flanges 13. The function of the proton exchange membrane is to allow protons to pass through, form an electric current, and avoid interference caused by negative ions and other substances.

[0045] Preferably, the flange 13 is also equipped with a flange cover 14. When performing photocatalytic CO2 reduction, the liquid channel of the reactor 1 can be directly sealed with the flange cover 14, and the second container 10 is no longer connected.

[0046] When applicable to the photoelectrocatalytic carbon dioxide reduction reaction, the reaction vessels in the above two cases can be integrated.

[0047] The present invention will be described below with specific embodiments:

[0048] Embodiment 1

[0049] As Figures 2-3 shown in the figure, a reaction device for photocatalytic carbon dioxide reduction includes a first container, and the first container includes a reactor 1.

[0050] A reaction chamber is provided in the reactor 1. A gas inlet 2 and a gas outlet 3 are provided on the reactor 1.

[0051] The gas inlet 2 and the gas outlet 3 communicate with the reaction chamber respectively.

[0052] A porous disc-shaped catalyst carrier 4 is provided in the reaction chamber, which is approximately perpendicular to the gas flow direction and carries a catalyst for catalytic CO2 reduction. The gas entering from the gas inlet 2 needs to pass through the catalyst carrier 4, fully contact with the porous disc carrier carrying the catalyst, and be discharged from the gas outlet 3 after sufficient reaction.

[0053] The reactor 1 also includes a light source 5. The light source 5 is disposed above the reactor 1. The reactor 1 is provided with a transparent cover, and the light emitted by the light source 5 passes through the reactor 1 and enters the reaction chamber to catalyze the gas reduction reaction.

[0054] The shell 6 also includes a constant temperature chamber. The shell 6 is provided with a constant temperature liquid inlet 7 and a constant temperature liquid outlet 8. The constant temperature liquid inlet 7 and the constant temperature liquid outlet 8 are respectively connected to the constant temperature chamber. The reactor 1 is arranged in the constant temperature chamber. The cooling liquid or the constant temperature liquid enters the constant temperature chamber in the shell 6, thereby ensuring the temperature of the reactor 1 and improving the efficiency of the photocatalytic reduction reaction.

[0055] Example 2

[0056] like Figures 4-5 As shown in , a reaction device for electrocatalytic carbon dioxide reduction includes a first container, and the first container includes a reactor 1.

[0057] A reaction chamber is provided in the reactor 1. A gas inlet 2 and a gas outlet 3 are provided on the reactor 1.

[0058] The gas inlet 2 and the gas outlet 3 are communicated with the reaction chamber respectively.

[0059] A porous disc-shaped catalyst carrier 4 is arranged vertically in the reaction chamber, on which a catalyst for catalytic CO2 reduction is loaded. The gas entering from the gas inlet 2 needs to pass through the catalyst carrier 4, and then fully contact with the porous disc carrier loaded with the catalyst, and then be discharged from the gas outlet 3 after sufficient reaction.

[0060] A first electrode 9 is also provided in the reaction chamber of the reactor 1. The first electrode 9 is connected to a catalyst carrier 4 made of an electrode material supporting a catalyst.

[0061] like Figure 4 As shown in FIG. 1 , a Pt sheet is pre-placed at the adjacent edge of the porous disc-shaped catalyst carrier 4 , and the outside of the Pt sheet is designed as an electrode, which can be directly connected to the electrochemical workstation.

[0062] The second container 10 is also included. The second container 10 is connected to the reactor 1 of the first container through a cylindrical channel and communicates with the reaction chamber of the reactor 1.

[0063] A second electrode is also disposed in the second container 10 , and a proton exchange membrane 12 is also disposed between the second container and the reaction chamber.

[0064] The second container 10 and the reaction chamber are both provided with electrolyte.

[0065] The passage between the second container 10 and the reaction chamber is connected via two flanges 13. The proton exchange membrane 12 is disposed between the two flanges 13.

[0066] Example 3

[0067] like Figures 2-5 As shown in , a reaction device for photoelectrocatalytic carbon dioxide reduction includes a first container, and the first container includes a reactor 1.

[0068] A reaction chamber is provided in the reactor 1. A gas inlet 2 and a gas outlet 3 are provided on the reactor 1.

[0069] The gas inlet 2 and the gas outlet 3 are communicated with the reaction chamber respectively.

[0070] A porous disc-shaped catalyst carrier 4 is arranged vertically in the reaction chamber, on which a catalyst for catalytic CO2 reduction is loaded. The gas entering from the gas inlet 2 needs to pass through the catalyst carrier 4, and then fully contact with the porous disc carrier loaded with the catalyst, and then be discharged from the gas outlet 3 after sufficient reaction.

[0071] The reactor 1 also includes a light source 5. The light source 5 is disposed above the reactor 1. The reactor 1 is provided with a transparent cover, and the light emitted by the light source 5 passes through the reactor 1 and enters the reaction chamber to catalyze the gas reduction reaction.

[0072] The shell 6 also includes a constant temperature chamber. The shell 6 is provided with a constant temperature liquid inlet 7 and a constant temperature liquid outlet 8. The constant temperature liquid inlet 7 and the constant temperature liquid outlet 8 are respectively connected to the constant temperature chamber. The reactor 1 is arranged in the constant temperature chamber. The coolant or constant temperature liquid enters the constant temperature chamber in the shell 6, thereby ensuring the temperature of the reactor 1 and improving the reaction efficiency.

[0073] The catalyst carrier 4 is made of an electrode material that carries the catalyst. A Pt sheet is pre-placed at the adjacent edge of the porous disc-shaped catalyst carrier to form a first electrode 9. The outside of the Pt sheet is designed as an electrode and can be directly connected to the electrochemical workstation.

[0074] The second container 10 is also included. The second container 10 is connected to the reactor 1 of the first container through a cylindrical channel and communicates with the reaction chamber of the reactor 1.

[0075] A second electrode is also disposed in the second container 10 , and a proton exchange membrane 12 is also disposed between the second container and the reaction chamber.

[0076] The second container 10 and the reaction chamber are both provided with electrolyte.

[0077] The passage between the second container 10 and the reaction chamber is connected via two flanges 13. The proton exchange membrane 12 is disposed between the two flanges 13.

[0078] In summary, the reaction device for catalytic reduction of carbon dioxide according to the embodiments of the present invention can effectively improve the efficiency of the catalytic reduction reaction.

[0079] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A reaction device for catalyzing carbon dioxide reduction, characterized in that, Comprising a first container, the first container includes a reactor, a reaction chamber is provided in the reactor, a gas inlet and a gas outlet are provided on the reactor, the gas inlet and the gas outlet communicate with the reaction chamber respectively and the gas inlet and the gas outlet communicate with each other through the reaction chamber, a catalyst carrier is provided in the reaction chamber, the catalyst carrier divides the reaction chamber into an inlet part and an outlet part, the inlet part is close to the gas inlet and far from the gas outlet, and the outlet part is close to the gas outlet and far from the gas inlet; The first container further includes a housing, a constant temperature chamber is provided in the housing, a constant temperature liquid inlet and a constant temperature liquid outlet are provided on the housing, the constant temperature liquid inlet and the constant temperature liquid outlet communicate with the constant temperature chamber respectively and the constant temperature liquid inlet and the constant temperature liquid outlet communicate with each other through the constant temperature chamber, and the reactor is provided in the constant temperature chamber; Further comprising a second container, the second container is connected to the reactor of the first container and communicates with the reaction chamber of the reactor, a first electrode is further provided in the reaction chamber of the reactor, the first electrode is connected to the catalyst carrier, a second electrode is further provided in the second container, and a proton exchange membrane is further provided between the second container and the reaction chamber; The second container and the reaction chamber are connected by two flanges; the proton exchange membrane is provided between the two flanges; the flange is also equipped with a flange cover, and the liquid passage of the reactor is sealed with the flange cover during photocatalytic CO2 reduction, and the second container is no longer connected.

2. The reaction device for catalyzing carbon dioxide reduction according to claim 1, characterized in that: The shape of the catalyst carrier is a porous disc shape.

3. The reaction device for catalyzing carbon dioxide reduction according to claim 1, wherein: Further comprising a light source, the light source is provided above the reactor, and the light emitted by the light source passes through the reactor and enters the reaction chamber to catalyze the gas reduction reaction.

4. The reaction device for catalyzing carbon dioxide reduction according to claim 1, characterized in that: Electrolytes are provided in both the second container and the reaction chamber.

5. The reaction device for catalyzing carbon dioxide reduction according to claim 1, characterized in that: The first electrode and / or the second electrode is made of a Pt sheet.

6. The reaction device for catalyzing carbon dioxide reduction according to claim 1, characterized in that: The catalyst carrier is made of an electrode material.

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