High-pressure carbon dioxide reduction testing device

Abstract

The utility model relates to a high pressure carbon dioxide reduction testing device, including reduction testing system, cathode feeding system and anode feeding system, reduction testing system includes anode subassembly, cathode subassembly and dielectric layer, anode subassembly and cathode subassembly are respectively electrically connected with the positive pole and the negative pole of power supply, the dielectric layer is in contact with the anode assembly and the cathode assembly, the cathode feeding system comprises a first material storage part capable of storing high-pressure carbon dioxide, the anode feeding system comprises a second material storage part capable of storing electrolyte, the first material storage part is connected with the input end of the cathode assembly through a high-pressure valve, and the second material storage part is connected with the output end of the anode assembly through a high-pressure valve. And the second storage part is connected with the input end of the anode assembly through a first high-pressure pump. The high-pressure carbon dioxide reduction testing device provided by the utility model solves the problem that the efficiency is relatively low when an existing testing system is used for carrying out carbon dioxide electrolytic reduction reaction.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrochemistry test equipment technical field especially relates to a high pressure carbon dioxide reduction test device. BACKGROUND

[0002] In recent years, the resource technology research of carbon dioxide has been widely concerned by people. Among them, through the electrocatalytic carbon dioxide reduction reaction, the carbon dioxide is converted into useful chemical substances, which is one of the current popular research directions, and has great practical significance and social value.

[0003] The existing electrocatalytic carbon dioxide reduction reaction test system is a laboratory hand-built atmospheric pressure test system, and the efficiency of carbon dioxide electrolytic reduction reaction is low. UTILITY MODEL CONTENT

[0004] The utility model discloses a high pressure carbon dioxide reduction test device, and aims at solving the problem of low efficiency of existing test system in carbon dioxide electrolytic reduction reaction.

[0005] To achieve the above-mentioned purpose, the utility model provides a high pressure carbon dioxide reduction test device, which comprises a reduction test system, a cathode feeding system and an anode feeding system, the reduction test system comprises an anode assembly, a cathode assembly and a medium layer, the anode assembly and the cathode assembly are respectively connected with the positive and negative poles of the power supply, the medium layer is respectively in contact with the anode assembly and the cathode assembly, the cathode feeding system comprises a first storage part capable of storing high pressure carbon dioxide, the anode feeding system comprises a second storage part capable of storing electrolyte, the first storage part is connected with the input end of the cathode assembly through a high pressure valve, and the second storage part is connected with the input end of the anode assembly through a first high pressure pump.

[0006] According to some embodiments of the utility model, the back pressure system comprises a first back pressure controller and a second back pressure controller, the first back pressure controller is connected with the output end of the cathode assembly, and the second back pressure controller is connected with the output end of the anode assembly.

[0007] According to some embodiments of the utility model, the second back pressure controller is connected with the second storage part.

[0008] According to some embodiments of the utility model, the back pressure system comprises a first back pressure controller and a second back pressure controller, the first back pressure controller is connected with the output end of the cathode assembly, and the second back pressure controller is connected with the output end of the anode assembly.

[0009] According to some embodiments of the present application, the cathode feeding system further comprises a humidifying assembly, the humidifying assembly comprises a humidifying part capable of containing liquid, the bottom of the humidifying part is connected with the first storage part through the high-pressure valve, and the top is connected with the cathode assembly.

[0010] According to some embodiments of the present application, the humidifying assembly further comprises a third storage part capable of storing liquid, the third storage part is connected with the humidifying part through a second high-pressure pump.

[0011] According to some embodiments of the present application, the anode feeding system further comprises a liquid supplementing assembly, the liquid supplementing assembly comprises a fourth storage part and a liquid level sensor, the fourth storage part is connected with the second storage part through a fluid pump, the liquid level sensor is arranged on the second storage part, and the fluid pump and the liquid level sensor are electrically connected with a control hub.

[0012] According to some embodiments of the present application, the anode feeding system further comprises a pressure relief valve, the pressure relief valve is arranged between the first high-pressure pump and the input end of the anode assembly.

[0013] According to some embodiments of the present application, the anode assembly comprises an anode end plate and an anode current collecting plate, the anode end plate is connected with the second storage part, and the anode current collecting plate is electrically connected with the positive pole of the power supply; the cathode assembly comprises a cathode end plate and a cathode current collecting plate, the cathode end plate is connected with the first storage part, and the cathode current collecting plate is electrically connected with the negative pole of the power supply.

[0014] According to some embodiments of the present application, heating elements are arranged on the anode end plate and the cathode end plate.

[0015] The present application has at least the following advantages:

[0016] The utility model discloses a reduction test system includes anode assembly, cathode assembly and dielectric layer, anode assembly with power supply positive and negative pole electricity is connected respectively with cathode assembly, dielectric layer is contacted with anode assembly with cathode assembly respectively, cathode feed system includes the first storage part of high pressure carbon dioxide that can store, anode feed system includes the second storage part of electrolyte that can store, the first storage part is connected with the input end of cathode assembly through high pressure valve, the second storage part is connected with the input end of anode assembly through first high pressure pump. The high pressure carbon dioxide gas in the first storage part enters the cathode assembly through the high pressure valve, and the electrolyte in the second storage part enters the anode assembly after the pressurization of first high pressure pump, because anode assembly with cathode assembly is connected with power supply positive and negative pole electricity respectively, the oxidation reaction of proton in anode assembly generates, and proton passes through the mass transfer process and enters the cathode assembly through dielectric layer, and the carbon dioxide electrolytic reduction reaction of cathode assembly occurs, and after the reaction is completed, the gas-liquid mixture in cathode assembly and anode assembly is exported to the next process. Because the reduction test system is in high pressure environment, compared with normal pressure environment, the mass transfer process of proton can be enhanced, thereby improving the efficiency of carbon dioxide electrolytic reduction, the high pressure carbon dioxide reduction test device provided by the utility model solves the problem of low efficiency when the existing test system carries out carbon dioxide electrolytic reduction reaction. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 It is a schematic diagram of the high pressure carbon dioxide reduction test device provided by the utility model embodiment;

[0019] Figure 2 It is a schematic diagram of the reduction test system in Figure 1 ;

[0020] Figure 3 It is a schematic diagram of the cathode feed system in Figure 1 ;

[0021] Figure 4 It is a schematic diagram of the anode feed system in Figure 1 ;

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 100-high pressure carbon dioxide reduction test device; 1-reduction test system; 11-anode assembly; 111-anode end plate; 112-anode busbar; 12-cathode assembly; 121-cathode end plate; 122-cathode busbar; 13-medium layer; 14-power supply; 15-heating element; 2-cathode feed system; 21-first storage part; 22-high pressure valve; 23-humidification assembly; 231-humidification part; 232-third storage part; 233-second high pressure pump; 3-anode feed system; 31-second storage part; 32-first high pressure pump; 33-liquid supplement assembly; 331-fourth storage part; 332-liquid level sensor; 333-fluid pump; 34-pressure relief valve; 4-back pressure system; 41-first back pressure controller; 42-second back pressure controller; 5-gas-liquid separation assembly; 51-gas-liquid separation part; 52-drain valve; 53-drying part. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0026] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0027] The present application provides a high pressure carbon dioxide reduction test device, Figures 1 to 4The utility model provides a high pressure carbon dioxide reduction test device's specific embodiment.

[0028] As Figure 1 The utility model discloses a high pressure carbon dioxide reduction test device 100, including reduction test system 1, cathode feed system 2 and anode feed system 3, reduction test system 1 includes anode assembly 11, cathode assembly 12 and dielectric layer 13, anode assembly 11 with cathode assembly 12 is connected with power supply 14 positive and negative pole electricity respectively, dielectric layer 13 is contacted with anode assembly 11 with cathode assembly 12 respectively, cathode feed system 2 includes the first storage part 21 of storing high pressure carbon dioxide, anode feed system 3 includes the second storage part 31 of storing electrolyte, first storage part 21 is connected with the input end of cathode assembly 12 through high pressure valve 22, second storage part 31 is connected with the input end of anode assembly 11 through first high pressure pump 32.

[0029] The utility model discloses a high pressure carbon dioxide reduction test device 100, including reduction test system 1, cathode feed system 2 and anode feed system 3, reduction test system 1 includes anode assembly 11, cathode assembly 12 and dielectric layer 13, anode assembly 11 with cathode assembly 12 is connected with power supply 14 positive and negative pole electricity respectively, dielectric layer 13 is contacted with anode assembly 11 with cathode assembly 12 respectively, cathode feed system 2 includes the first storage part 21 of storing high pressure carbon dioxide, anode feed system 3 includes the second storage part 31 of storing electrolyte, first storage part 21 is connected with the input end of cathode assembly 12 through high pressure valve 22, second storage part 31 is connected with the input end of anode assembly 11 through first high pressure pump 32. The high pressure carbon dioxide gas in the first storage part 21 enters the cathode assembly 12 through the high pressure valve 22, and the electrolyte in the second storage part 31 enters the anode assembly 11 after being pressurized by the first high pressure pump 32. Since the anode assembly 11 and the cathode assembly 12 are respectively connected with the positive and negative poles of the power supply 14, oxidation reaction occurs in the anode assembly 11 to generate protons, which pass through the dielectric layer 13 and enter the cathode assembly 12 through a mass transfer process. Carbon dioxide electrolysis reduction reaction occurs in the cathode assembly 12, and after the reaction is completed, the gas-liquid mixture in the cathode assembly 12 and the anode assembly 11 is output to the next process. Since the reduction test system 1 is in a high-pressure environment, the mass transfer process of protons can be enhanced compared to a normal-pressure environment, thereby improving the efficiency of carbon dioxide electrolysis reduction. The high pressure carbon dioxide reduction test device 100 provided by the utility model solves the problem of low efficiency of existing test systems in performing carbon dioxide electrolysis reduction reaction.

[0030] Since the gas-liquid mixture in the cathode assembly 12 and the anode assembly 11 after the reaction is completed is in a high-pressure state and cannot be directly treated, in some embodiments,Figure 1 As shown, the high-pressure carbon dioxide reduction test device 100 further comprises a back pressure system 4, which comprises a first back pressure controller 41 connected with the output end of the cathode assembly 12 and a second back pressure controller 42 connected with the output end of the anode assembly 11. In this way, on the one hand, the gas-liquid mixture in the reduction test system 1 after the reaction is completed can be restored to the normal pressure state through the first back pressure controller 41 and the second back pressure controller 42, facilitating the processing of the next process, on the other hand, the first back pressure controller 41 and the second back pressure controller 42 can cooperate to adjust the pressure in the reduction test system 1, so that the carbon dioxide electrolysis reduction reaction is in a higher pressure environment, and the pipeline is not broken due to too high pressure, and a safety accident does not occur.

[0031] Since the electrolyte in the anode assembly 11 may not be completely reacted, in order to avoid waste, in some embodiments, as shown in Figure 1 As shown, the second back pressure controller 42 is connected with the second storage part 31. In this way, the gas-liquid mixture output through the second back pressure controller 42 returns to the second storage part 31, and the unreacted electrolyte enters the anode assembly 11 again after being pressurized by the first high-pressure pump 32, and the reacted gas is output from the top of the second storage part 31 to the next test process.

[0032] Further, in some embodiments, as shown in Figure 1 As shown, the high-pressure carbon dioxide reduction test device 100 further comprises two gas-liquid separation assemblies 5, one of which is connected with the second storage part 31, and the other of which is connected with the first back pressure controller 41. In this way, the gas-liquid separation assemblies 5 are used to separate the gas-liquid mixture in the anode assembly 11 and the cathode assembly 12, so that the separated gas can enter the next test process for testing.

[0033] The specific structure of the gas-liquid separation assembly 5 is not limited as long as it can complete the gas-liquid separation, for example, in some embodiments, as shown in Figure 1 As shown, the gas-liquid separation assembly 5 comprises a gas-liquid separation part 51, the bottom of which is connected with a drain valve 52, and the top of which is connected with a drying part 53. Since the density of the liquid is greater than that of the gas, after the gas-liquid separation is completed, the liquid is discharged by the drain valve 52, and the gas is output from the top of the gas-liquid separation part 51, and the gas is further dehydrated by the drying part 53 to avoid the influence of water vapor in the gas on the test results of the next test process.

[0034] In order to improve the efficiency of the carbon dioxide electrolytic reduction reaction, in the embodiment, as shown in Figure 1 and Figure 3 The cathode feeding system 2 further comprises a humidifying assembly 23, which comprises a humidifying part 231 capable of containing liquid, the bottom of the humidifying part 231 is connected with the first storage part 21 through the high-pressure valve 22, and the top is connected with the cathode assembly 12. By humidifying the high-pressure carbon dioxide, the carbon dioxide gas is more dispersed, thereby increasing the contact area of the gas and the catalyst, improving the catalytic efficiency, and further improving the efficiency of the carbon dioxide electrolytic reduction reaction.

[0035] Further, in some embodiments, a heating component is arranged in the humidifying part 231, which can heat the humidified carbon dioxide gas. Since a higher temperature can accelerate the chemical reaction, the efficiency of the carbon dioxide electrolytic reduction reaction is improved.

[0036] Since the humidifying part 231 is in an environment at normal pressure, the pressure of the high-pressure carbon dioxide gas will drop when it enters the humidifying part 231, therefore, in some embodiments, as shown in Figure 3 The humidifying assembly 23 further comprises a third storage part 232 capable of storing liquid, which is connected with the humidifying part 231 through a second high-pressure pump 233. In this way, on the one hand, after the humidifying part 231 humidifies the carbon dioxide gas, the amount of liquid inside will decrease, and by connecting the third storage part 232 with the humidifying part 231, the humidifying part 231 can be replenished with liquid, which can avoid the humidifying effect of the humidifying part 231 from decreasing, on the other hand, the liquid in the third storage part 232 is pressurized by the second high-pressure pump 233 before entering the humidifying part 231, so that the humidifying part 231 is in a high-pressure environment, avoiding the drop in gas pressure, which affects the efficiency of the carbon dioxide electrolytic reduction reaction.

[0037] Further, the humidifying part 231 is provided with a liquid level detection part, and the second high-pressure pump 233 and the liquid level detection part are electrically connected with a control center. When the liquid level detection part detects that the liquid level in the humidifying part 231 is lower than a preset liquid level, it sends a signal to the control center, and the control center controls the second high-pressure pump 233 to start and replenish the humidifying part 231 with liquid.

[0038] Similarly, in some embodiments, as shown in Figure 1 and Figure 4As shown, the anode feeding system 3 further comprises a liquid supplementing assembly 33, which comprises a fourth storage part 331 connected with the second storage part 31 through a fluid pump 333 and a liquid level sensor 332 arranged on the second storage part 31, and the fluid pump 333 and the liquid level sensor 332 are electrically connected with the control center. In this way, when the liquid level sensor 332 detects that the liquid level in the second storage part 31 is lower than the preset liquid level, a signal is sent to the control center, and the control center controls the fluid pump 333 to start and supplement the liquid in the second storage part 31.

[0039] Further, the second storage part 31 is provided with a heating component, which can heat the electrolyte in the second storage part 31, accelerate the oxidation reaction in the anode assembly 11, and thus improve the efficiency of the carbon dioxide electrolysis reduction reaction.

[0040] Since the electrolyte in the second storage part 31 enters the anode assembly 11 after being pressurized by the first high-pressure pump 32, but too high water pressure may cause the connecting pipeline to burst and injure the experimental personnel, therefore, in some embodiments, as shown in Figure 4 As shown, the anode feeding system 3 further comprises a pressure relief valve 34 arranged between the first high-pressure pump 32 and the input end of the anode assembly 11. The pressure relief valve 34 is used for safety protection, and when the pressure is too high, the pressure relief valve 34 can relieve the pressure to avoid safety accidents.

[0041] The specific structure of the anode assembly 11 and the cathode assembly 12 is not limited, for example, in some embodiments, as shown in Figure 2 As shown, the anode assembly 11 comprises an anode end plate 111 connected with the second storage part 31 and an anode current collector plate 112 electrically connected with the positive electrode of the power supply 14; and the cathode assembly 12 comprises a cathode end plate 121 connected with the first storage part 21 and a cathode current collector plate 122 electrically connected with the negative electrode of the power supply 14. By arranging the cathode current collector plate 122 and the anode current collector plate 112, on the one hand, the current can be collected and conducted to ensure the smoothness of the current, and on the other hand, the gas flow channel can be provided to uniformly distribute the gas to the medium layer 13, promote the electrode reaction, and thus improve the efficiency of the carbon dioxide electrolysis reduction reaction.

[0042] Further, in some embodiments, as shown in Figure 2As shown, the anode end plate 111 and the cathode end plate 121 are provided with heating elements 15. Since high temperature can accelerate chemical reaction, the anode end plate 111 and the cathode end plate 121 are heated, so that the chemical reaction is carried out in a high-temperature environment, thereby improving the efficiency of the carbon dioxide electrolysis reduction reaction.

[0043] The above merely provides the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high pressure carbon dioxide reduction test apparatus, characterized by, The application relates to a high-pressure carbon dioxide electrolysis system, which comprises a reduction test system, a cathode supply system and an anode supply system.

2. The high pressure carbon dioxide reduction test device of claim 1, wherein, The reduction test system comprises an anode assembly, a cathode assembly and a medium layer, the anode assembly and the cathode assembly are electrically connected with positive and negative poles of a power supply respectively, and the medium layer is in contact with the anode assembly and the cathode assembly respectively.

3. The high pressure carbon dioxide reduction test device of claim 2, wherein, The cathode supply system comprises a first storage part capable of storing high-pressure carbon dioxide.

4. The high pressure carbon dioxide reduction test device of claim 3, wherein, The anode supply system comprises a second storage part capable of storing electrolyte.

5. The high pressure carbon dioxide reduction test device of claim 1, wherein, The first storage part is connected with an input end of the cathode assembly through a high-pressure valve.

6. The high pressure carbon dioxide reduction test device of claim 5, wherein, The second storage part is connected with an input end of the anode assembly through a first high-pressure pump.

7. The high pressure carbon dioxide reduction test device of claim 1, wherein, The second back pressure controller is connected with the second storage part.

8. The high pressure carbon dioxide reduction test device of claim 1, wherein, The cathode supply system further comprises a humidifying assembly, which comprises a humidifying part capable of containing liquid.

9. The high pressure carbon dioxide reduction test device of claim 1, wherein, The bottom of the humidifying part is connected with the first storage part through the high-pressure valve, and the top is connected with the cathode assembly. The humidifying assembly further comprises a third storage part capable of storing liquid.

10. The high pressure carbon dioxide reduction test device of claim 9, wherein, The third storage part is connected with the humidifying part through a second high-pressure pump. The anode supply system further comprises a liquid supplementing assembly, which comprises a fourth storage part and a liquid level sensor. The fourth storage part is connected with the second storage part through a fluid pump. The liquid level sensor is arranged on the second storage part. The fluid pump and the liquid level sensor are electrically connected with a control center. The anode supply system further comprises a pressure relief valve arranged between the first high-pressure pump and the input end of the anode assembly. The anode assembly comprises an anode end plate and an anode current collecting plate. The anode end plate is connected with the second storage part. The anode current collecting plate is electrically connected with the positive pole of the power supply. The cathode assembly comprises a cathode end plate and a cathode current collecting plate. The cathode end plate is connected with the first storage part. The cathode current collecting plate is electrically connected with the negative pole of the power supply. Heating elements are arranged on the anode end plate and the cathode end plate.

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