Carbon dioxide trapping assembly, super-capacitor carbon dioxide trapping device, application of super-capacitor carbon dioxide trapping device and carbon dioxide trapping method

Abstract

The invention provides a carbon dioxide trapping assembly, a super-capacitor carbon dioxide trapping device, application of the super-capacitor carbon dioxide trapping device and a carbon dioxide trapping method, and belongs to the field of carbon dioxide trapping. The invention provides a carbon dioxide trapping assembly. The carbon dioxide trapping assembly comprises an annular positive electrode 201; the annular diaphragm 202 is arranged in an inner cavity of the annular positive electrode 201 and is spaced from the annular positive electrode 201; the electrolyte redistributor 203 is transversely arranged at the top end of the annular positive electrode 201 in a non-contact manner; the plurality of negative electrodes 204 are arranged in an inner cavity of the annular diaphragm 202 at intervals; the annular positive electrode 201 is connected with a wire and used for being connected with the positive electrode of a power source. And the plurality of cathodes 204 are connected with leads and are used for being connected with the cathode of a power supply. The carbon dioxide trapping assembly can realize separation and trapping of carbon dioxide, and can be integrated in a super-capacitor carbon dioxide trapping device, so that large-scale trapping application of carbon dioxide can be realized.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide capture, and in particular to a carbon dioxide capture component, a supercapacitor carbon dioxide capture device and application thereof, and a carbon dioxide capture method. Background Art

[0002] At present, the main technologies for capturing carbon dioxide include absorption separation technology, temperature swing adsorption technology, pressure swing adsorption technology, membrane separation technology and chemical chain combustion technology. Among them, the most mature technology is absorption separation technology. However, the absorption separation technology based on amine solvent washing has defects such as high energy consumption, high cost, high uncertainty and difficulty in industrial chain coordination, which restricts the large-scale application of this technology; temperature swing adsorption technology and pressure swing adsorption technology also require a lot of energy consumption; membrane separation technology has a high cost, which restricts the large-scale application of this technology. Therefore, there is an urgent need to develop new low-cost, low-energy, high-efficiency and green carbon capture technologies.

[0003] Supercapacitor adsorption energy storage is a new carbon capture technology that uses electrochemical methods to capture carbon dioxide. This technology integrates the dual functions of supercapacitor energy storage and carbon dioxide capture, and is expected to replace traditional high-energy consumption, high-cost and high-uncertainty amine-based solution washing technology.

[0004] At present, supercapacitor adsorption energy storage generally places the positive electrode of the supercapacitor in a water-based electrolyte, immerses half of the negative electrode in the electrolyte, and exposes the other half to a mixed gas rich in carbon dioxide. When charging, the gas-liquid-solid interface of the negative electrode of the supercapacitor selectively adsorbs the carbon dioxide in the mixed gas and dissolves it in the electrolyte. When discharging, the carbon dioxide reversibly desorbs and precipitates, thereby achieving the capture, storage and release of carbon dioxide. However, the above-mentioned supercapacitors are all laboratory devices, which cannot be enlarged and multiple components cannot be superimposed and integrated into the system, and are not suitable for supercapacitor carbon dioxide capture devices for large-scale carbon dioxide capture. Summary of the invention

[0005] The present invention provides a carbon dioxide capture component, a supercapacitor carbon dioxide capture device and application thereof, and a carbon dioxide capture method. The supercapacitor carbon dioxide capture device containing the carbon dioxide capture component of the present invention can realize large-scale capture of carbon dioxide.

[0006] The present invention provides a carbon dioxide capture assembly, a ring-shaped positive electrode 201;

[0007] An annular diaphragm 202 disposed in the inner cavity of the annular positive electrode 201 and spaced apart from the annular positive electrode 201;

[0008] An electrolyte redistributor 203 non-contactly disposed horizontally on the top of the annular positive electrode 201;

[0009] A plurality of negative electrodes 204 are spaced apart in the inner cavity of the annular diaphragm 202;

[0010] The annular positive electrode 201 is connected with a wire for connecting to the positive electrode of a power source; the plurality of negative electrodes 204 are connected with a wire for connecting to the negative electrode of a power source.

[0011] Preferably, the distance between the electrolyte redistributor 203 and the top of the annular positive electrode 201 is 1 to 100 mm;

[0012] The inner diameter of the annular positive electrode 201 is 5 mm to 9.9 m, the outer diameter is 1.01 to 2 times the inner diameter, and the height is 10 mm to 1 m.

[0013] Preferably, the thickness of the annular diaphragm 202 is 0.02-1 mm; the diameter of the annular diaphragm 202 is 5 mm-9.9 m.

[0014] Preferably, the distance between the annular separator 202 and the outermost negative electrode 204 is 0 to 100 mm.

[0015] Preferably, the number of the negative electrodes 204 is 1 to 10,000;

[0016] When the number of the negative electrodes 204 is ≥2, the distance between adjacent negative electrodes 204 is 0.01-100 mm.

[0017] The present invention also provides a supercapacitor carbon dioxide capture device, comprising a housing 103;

[0018] a plurality of carbon dioxide capture assemblies 200 located inside the housing 103;

[0019] an electrolyte inlet located at the upper end of the side of the housing 103;

[0020] An electrolyte flow divider 101 is located at the top of the housing 103, wherein the inlet of the electrolyte flow divider 101 is connected to the electrolyte inlet, and the outlet is connected to the inlet of the electrolyte redistributor 203 in the carbon dioxide capture assembly 200 adjacent to the electrolyte flow divider 101;

[0021] The bottom of the housing 103 is provided with an exhaust gas inlet, which is located below the lowermost carbon dioxide capture assembly 200;

[0022] The carbon dioxide capture assembly 200 is the carbon dioxide capture assembly described in the above technical solution.

[0023] Preferably, the top of the housing 103 is provided with a captured tail gas outlet and a high-concentration tail gas outlet; the bottom of the housing 103 is also provided with an electrolyte outlet;

[0024] The number of the carbon dioxide capture components 200 is 2 to 100,000;

[0025] The adjacent carbon dioxide capture assemblies 200 are connected in series.

[0026] Preferably, it also includes: a tail gas humidifying device 102;

[0027] The exhaust gas humidifying device 102 is connected to the exhaust gas inlet port, and the exhaust gas enters the housing 103 through the exhaust gas humidifying device 102 and the exhaust gas inlet port G3.

[0028] The present invention also provides the use of the supercapacitor carbon dioxide capture device described in the above technical solution in capturing carbon dioxide in exhaust gas.

[0029] The present invention also provides a method for capturing carbon dioxide, characterized in that it is carried out in the supercapacitor carbon dioxide capture device described in the above technical solution, comprising the following steps:

[0030] The electrolyte enters the electrolyte diversion device 101 through the electrolyte inlet, and the electrolyte diversion device 101 continuously sprays the electrolyte onto the carbon dioxide capture component 200 through the electrolyte redistributor 203, and continuously passes the exhaust gas into the shell 103 through the tail gas inlet to contact the carbon dioxide capture component 200 in a charged state to capture carbon dioxide.

[0031] The carbon dioxide capture component of the present invention adsorbs carbon dioxide during charging and releases carbon dioxide during discharging, thereby achieving separation and capture of carbon dioxide, and 2 to 10,000 carbon dioxide capture components can be integrated in a supercapacitor carbon dioxide capture device by stacking the carbon dioxide capture components, thereby achieving large-scale capture application of carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a carbon dioxide capture assembly according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of a supercapacitor carbon dioxide capture device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention provides a carbon dioxide capture assembly, including a ring-shaped positive electrode 201;

[0035] An annular diaphragm 202 disposed in the inner cavity of the annular positive electrode 201 and spaced apart from the annular positive electrode 201;

[0036] An electrolyte redistributor 203 non-contactly disposed horizontally on the top of the annular positive electrode 201;

[0037] A plurality of negative electrodes 204 are spaced apart in the inner cavity of the annular diaphragm 202;

[0038] The annular positive electrode 201 is connected with a wire for connecting to the positive electrode of a power source; the plurality of negative electrodes 204 are connected with a wire for connecting to the negative electrode of a power source.

[0039] In the present invention, the carbon dioxide capture assembly comprises a ring-shaped positive electrode 201; the ring-shaped positive electrode 201 is connected with a wire for connecting to the positive electrode of a power source.

[0040] In the present invention, the annular positive electrode 201 preferably includes a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector.

[0041] In the present invention, the positive electrode current collector preferably includes one or more of nickel foil, nickel mesh, nickel foam, titanium foil, titanium mesh, titanium foam, copper foil, copper mesh, copper foam, stainless steel foil, stainless steel mesh, stainless steel foam, carbon cloth, carbon paper, graphite sheet and graphite mesh.

[0042] In the present invention, the positive electrode active material layer is preferably a positive electrode material, a binder and a conductive agent. The mass ratio of the positive electrode material, the binder and the conductive agent is preferably 60-96:2-20:2-20. In a specific embodiment of the present invention, the mass ratio of the positive electrode material, the binder and the conductive agent can be 60:2:2, 75:5:5, 80:10:10, 85:15:15, 90:20:20 or 96:20:20.

[0043] In the present invention, the positive electrode material is preferably a pseudocapacitor material and a porous carbon material, the mass ratio of the pseudocapacitor electrode material and the porous carbon material is preferably 100-10:0-90, and the mass of the porous carbon material is not 0. In a specific embodiment of the present invention, the mass ratio of the pseudocapacitor electrode material and the porous carbon material can be 90:10, 70:10 or 60:10.

[0044] In the present invention, the pseudocapacitive material is preferably a transition metal oxide or a capacitive polymer material, and the transition metal oxide is preferably one or more of manganese dioxide, manganese tetraoxide, nickel oxide, cobaltous oxide, cobalt tetraoxide, ruthenium oxide, ferrous iron oxide, ferrous oxide, tin oxide, nickel hydroxide, cobalt hydroxide and vanadium nitride; the capacitive polymer is preferably one or more of polyaniline, polypyrrole and polythiophene;

[0045] In the present invention, the porous carbon material is preferably one or more of activated carbon, activated carbon fiber, mesoporous carbon, microporous carbon, hierarchical porous carbon, carbon aerogel, graphene and carbon nanotubes; the specific surface area of ​​the porous carbon material is preferably not less than 600 m2 / g.

[0046] In the present invention, the parameters of the activated carbon are preferably a particle diameter of 1 to 10 m, a specific surface area of ​​600 to 2500 m 2 / g.

[0047] In the present invention, the parameters of the activated carbon fiber are preferably a diameter of 50 to 200 nm and a specific surface area of ​​10 to 800 m 2 / g.

[0048] In the present invention, the porosity of the carbon aerogel is preferably 80-98%, the pore size is preferably less than 50 nm, the diameter of the network colloid particles is preferably 3-20 nm, and the specific surface area is preferably 600-2000 m 2 / g. Carbon aerogel is a lightweight, porous, amorphous, bulk nanocarbon material with a continuous three-dimensional network structure that can be controlled and tailored at the nanoscale.

[0049] In the present invention, the number of graphene layers is preferably less than 6, and the specific surface area is preferably 100 to 2200 m 2 / g.

[0050] In the present invention, the carbon nanotubes are preferably single-walled carbon nanotubes and multi-walled carbon nanotubes, and the mass ratio of the single-walled carbon nanotubes to the multi-walled carbon nanotubes is 1-10:10-1; the diameter of the single-walled carbon nanotubes is preferably 0.6-2 nm, and the specific surface area is preferably 10-1000 m 2 / g; the diameter of the multi-walled carbon nanotubes is preferably 2 to 200 nm, and the specific surface area is preferably 10 to 800 m 2 / g.

[0051] In the present invention, the pore size of the mesoporous carbon material is preferably 2 to 50 nm, and the specific surface area is preferably 700 to 1500 m 2 / g, and the pore volume is preferably 0.7 to 3.0 cm 3 / g, the mesoporosity is preferably>94%; the pore size of the microporous carbon is preferably less than 2nm, and the specific surface area is preferably 600-2500m 2 / g; the hierarchical porous carbon preferably has primary micropores with a pore size of less than 2 nm and secondary mesopores with a pore size of 2 to 50 nm.

[0052] In the present invention, the inner diameter of the annular positive electrode 201 is preferably 5 mm to 9.9 m, the outer diameter is preferably 1.01 to 2 times the inner diameter, and the height is preferably 10 mm to 1 m. In a specific embodiment of the present invention, the inner diameter of the annular positive electrode 201 may be 5 mm, 500 mm, 1 m, 2 m, 3 m, 4 m, 5 m, 6 m, 7 m, 8 m, 9 m or 9.9 m, and the outer diameter may be 1.01 times, 1.1 times, 1.2 times, 1.3 times, 1.5 times, 1.8 times or 2 times the inner diameter; the height may be 10 mm, 100 mm, 200 mm, 500 mm, 800 mm or 1 m.

[0053] In the present invention, the carbon dioxide capture assembly includes an annular diaphragm 202 disposed in the inner cavity of the annular positive electrode 201 and spaced from the annular positive electrode 201, and the annular diaphragm preferably includes one or more of polypropylene felt, non-woven fabric, geotextile, glass fiber cloth and cellulose paper; the diameter of the annular diaphragm 202 is preferably 5mm to 9.9m, and the thickness is preferably 0.02 to 1mm. In a specific embodiment of the present invention, the inner diameter of the annular diaphragm 202 can be 5mm, 100mm, 1m, 2m, 3m, 4m, 5m, 6m, 7m, 8m or 9m; the thickness of the annular diaphragm can be 0.02mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm. The diaphragm electrically insulates the positive electrode 201 from the negative electrode 204.

[0054] In the present invention, the annular separator 202 and the annular positive electrode 201 are preferably bonded together or composited together by an adhesive.

[0055] In the present invention, the carbon dioxide capture assembly includes an electrolyte redistributor 203 non-contactly disposed horizontally on the top of the annular positive electrode 201. The electrolyte redistributor 203 can make the electrolyte more evenly distributed; the distance between the electrolyte redistributor 203 and the top of the annular positive electrode 201 is preferably 1 to 100 mm. In a specific embodiment of the present invention, the distance can be 1 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50, 60 mm, 70 mm, 80 mm, 90 mm or 100 mm.

[0056] In the present invention, the carbon dioxide capture assembly includes a plurality of negative electrodes 204 spaced apart in the inner cavity of the annular diaphragm 202; the number of the negative electrodes 204 is preferably 1 to 10,000. In a specific embodiment of the present invention, the number of the negative electrodes 204 may be 1, 100, 500, 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000, 9,000 or 10,000; when the negative electrode When the number of 204 is ≥2, the spacing between adjacent negative electrodes 204 is preferably 0.01-100 mm. In a specific embodiment of the present invention, the spacing between adjacent negative electrodes 204 can be 0.01 mm, 1 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm or 100 mm; the gaps between adjacent negative electrodes 204 serve as a flow channel for exhaust gas; the several negative electrodes 204 are connected with wires for connecting to the negative electrode of a power source.

[0057] In the present invention, the shape of the negative electrode 204 is preferably a plate, and a plurality of negative electrodes 204 are preferably arranged in parallel or in a trumpet shape.

[0058] In the present invention, the distance between the annular diaphragm 202 and the outermost negative electrode 204 is preferably 0 to 100 mm. In a specific embodiment of the present invention, the distance between the annular diaphragm 202 and the outermost negative electrode 204 can be 0, 1 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm or 100 mm.

[0059] In the present invention, the negative electrode 204 includes a negative electrode current collector and a negative electrode active material disposed on the negative electrode current collector.

[0060] In the present invention, the mass ratio of the positive electrode active material to the negative electrode active material is preferably 10:1 to 1:2.

[0061] In the present invention, the negative electrode current collector is preferably one or more of nickel foil, nickel mesh, nickel foam, titanium foil, titanium mesh, titanium foam, copper foil, copper mesh, copper foam, stainless steel foil, stainless steel mesh, stainless steel foam, carbon cloth and carbon paper.

[0062] In the present invention, the negative electrode active material is preferably a negative electrode material, a binder, and a conductive agent; the mass ratio of the negative electrode material, the binder, and the conductive agent is preferably 60-96:2-20:2-20. In a specific embodiment of the present invention, the mass ratio of the negative electrode material, the binder, and the conductive agent can be 80:7:13 or 70:10:20.

[0063] The negative electrode material is preferably a porous carbon material; the binder is preferably one or more of polytetrafluoroethylene, polyvinylidene fluoride, carboxymethyl cellulose, sodium carboxymethyl cellulose, styrene-butadiene rubber, gluten powder, sodium alginate, potassium alginate, and LA series binders; the conductive agent is preferably conductive carbon black or conductive graphite.

[0064] The present invention also provides a supercapacitor carbon dioxide capture device, comprising a housing 103;

[0065] a plurality of carbon dioxide capture assemblies 200 located inside the housing 103;

[0066] an electrolyte inlet located at the upper end of the side of the housing 103;

[0067] An electrolyte flow divider 101 is located at the top of the housing 103, wherein the inlet of the electrolyte flow divider 101 is connected to the electrolyte inlet, and the outlet is connected to the inlet of the electrolyte redistributor 203 of the adjacent carbon dioxide capture assembly 200;

[0068] The bottom of the housing 103 is provided with an exhaust gas inlet G3, which is located below the carbon dioxide capture assembly 200;

[0069] The carbon dioxide capture assembly 200 is the carbon dioxide capture assembly described in the above technical solution.

[0070] In the present invention, the supercapacitor carbon dioxide capture device includes a shell 103, the height of the shell 103 is preferably less than 100m, the gap between the shell 103 and the outer side of the positive electrode is 0.1-100mm, and the bottom of the shell 103 is provided with an exhaust gas inlet G3, which is located below the lowermost carbon dioxide capture component 200; the top of the shell 103 is preferably provided with a captured exhaust gas outlet and a high-concentration exhaust gas outlet; the bottom of the shell 103 is preferably also provided with an electrolyte outlet.

[0071] In the present invention, the supercapacitor carbon dioxide capture device includes a plurality of carbon dioxide capture assemblies 200 located inside the housing 103, and the number of the carbon dioxide capture assemblies 200 is preferably 1 to 100,000; and the adjacent carbon dioxide capture assemblies 200 are preferably connected in series.

[0072] In the present invention, the supercapacitor carbon dioxide capture device includes an electrolyte inlet located at the upper end of the side of the shell 103.

[0073] In the present invention, the supercapacitor carbon dioxide capture device includes an electrolyte diversion device 101 located at the top of the shell 103, the inlet of the electrolyte diversion device 101 is connected to the electrolyte inlet, and the outlet is connected to the inlet of the electrolyte redistributor 203 of the adjacent carbon dioxide capture component 200, and the electrolyte diversion device 101 is preferably a nozzle.

[0074] In the present invention, the supercapacitor carbon dioxide capture device preferably also includes: an exhaust gas humidifying device 102, and the exhaust gas enters the shell 103 through the exhaust gas humidifying device 102 and the exhaust gas inlet G3; the exhaust gas humidifying device 102 is preferably connected to the exhaust gas inlet G3, and is used to humidify the exhaust gas to increase the water vapor content.

[0075] The present invention also provides a method for capturing carbon dioxide, which is carried out in the supercapacitor carbon dioxide capture device described in the above technical solution, comprising the following steps:

[0076] The electrolyte enters the electrolyte diversion device 101 through the electrolyte inlet, and the electrolyte diversion device 101 continuously sprays the electrolyte onto the carbon dioxide capture component 200 through the electrolyte redistributor 203, and continuously passes the exhaust gas into the shell 103 through the tail gas inlet to contact the carbon dioxide capture component 200 in a charged state to capture carbon dioxide.

[0077] The present invention has no special limitation on the flow rate ratio of the electrolyte to the tail gas, as long as there is no flooding.

[0078] In the present invention, the concentration of the electrolyte is preferably 0.1 to 10 mol / L. In a specific embodiment of the present invention, the concentration of the electrolyte can be 0.1 mol / L, 2 mol / L, 4 mol / L, 6 mol / L, 8 mol / L or 10 mol / L; the electrolyte preferably includes one of sodium chloride solution, potassium chloride solution, magnesium chloride solution, sodium sulfate solution, potassium sulfate solution, magnesium sulfate solution, lithium sulfate, sodium carbonate solution, sodium bicarbonate solution, sodium chloride solution, lithium chloride solution, ammonium chloride solution, sodium bromide solution, magnesium bromide solution, seawater, lithium nitrate solution, sodium nitrate solution, potassium nitrate solution, sodium hydroxide solution, potassium hydroxide solution and ammonia solution.

[0079] In the present invention, when the supercapacitor carbon dioxide capture device includes a tail gas humidifying device 102, the exhaust gas preferably first passes through the tail gas humidifying device 102 and then enters the housing 103 through the tail gas inlet. The tail gas humidifying device 102 can increase the water vapor content in the exhaust gas, thereby preventing the tail gas from taking away water in the electrolyte and affecting the adsorption of the capacitor.

[0080] In the present invention, the voltage between the positive electrode and the negative electrode of each carbon dioxide capture assembly 200 during the capture process is preferably -1V to +1V.

[0081] In the present invention, in the charging state, the captured exhaust gas after capturing carbon dioxide is preferably discharged from the captured exhaust gas outlet and then passed into the gas humidification device 102, and then enters the supercapacitor carbon dioxide capture device for capture again, thereby further increasing the carbon dioxide concentration in the high-concentration exhaust gas generated by the capture.

[0082] In the present invention, in the discharge state, the high-concentration exhaust gas after the captured carbon dioxide is released is preferably discharged from the high-concentration exhaust gas outlet and then passed into the gas humidification device 102, and then enters the supercapacitor carbon dioxide capture device 100 again to further reduce the carbon dioxide concentration in the captured exhaust gas.

[0083] During the continuous spraying process, the electrolyte flows into the bottom of the shell and is preferably discharged through the electrolyte outlet and then passed again through the electrolyte inlet into the supercapacitor carbon dioxide capture device to achieve the recycling of the electrolyte.

[0084] The carbon dioxide capture assembly, supercapacitor carbon dioxide capture device and its application, and carbon dioxide capture method provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be understood as limiting the scope of protection of the present invention.

[0085] Figure 1 This is a schematic diagram of the structure of a carbon dioxide capture assembly according to an embodiment of the present invention;

[0086] Figure 2 This is a schematic diagram of the structure of a supercapacitor carbon dioxide capture device according to an embodiment of the present invention.

[0087] In the embodiment, the components of the carbon dioxide capture assembly are: a ring-shaped positive electrode 201;

[0088] An annular diaphragm 202 disposed in the inner cavity of the annular positive electrode 201 and spaced apart from the annular positive electrode 201;

[0089] An electrolyte redistributor 203 non-contactly disposed horizontally on the top of the annular positive electrode 201;

[0090] A plurality of negative electrodes 204 are spaced apart in the inner cavity of the annular diaphragm 202;

[0091] The annular positive electrode 201 and the negative electrode 204 are connected with wires for connecting to a power source.

[0092] The components of the supercapacitor carbon dioxide capture device are: a housing 103;

[0093] a plurality of carbon dioxide capture assemblies 200 located inside the housing 103;

[0094] an electrolyte inlet located at an upper end of a side portion of the housing 103;

[0095] An electrolyte flow divider 101 is located at the top of the housing 103, wherein the inlet of the electrolyte flow divider 101 is connected to the electrolyte inlet, and the outlet is connected to the inlet of the electrolyte redistributor 203 of the adjacent carbon dioxide capture assembly 200;

[0096] The bottom of the housing 103 is provided with an exhaust gas inlet G3, which is located below the carbon dioxide capture assembly 200;

[0097] The carbon dioxide capture assembly 200 is the carbon dioxide capture assembly described in the above technical solution.

[0098] The adjacent carbon dioxide capture assemblies 200 are connected in series;

[0099] The top of the housing 103 is provided with a captured tail gas outlet and a high-concentration tail gas outlet; the bottom of the housing 103 is also provided with an electrolyte outlet;

[0100] The tail gas humidifying device 102, the tail gas enters the housing 103 through the tail gas humidifying device 102 and the tail gas inlet G3; the tail gas humidifying device 102 is preferably connected to the tail gas inlet G3, and is used for humidifying the exhaust gas to increase the water vapor content.

[0101] Example 1

[0102] 20-meter-high supercapacitor carbon dioxide capture device, including 10,000 carbon dioxide capture components, each component is 5 meters in diameter, contains 100,000 negative electrodes, and has an inlet gas velocity of 20m 3 / s, the device captures carbon dioxide during charging, and the concentration of carbon dioxide in industrial waste gas can be reduced from 15% to 5%; the device releases carbon dioxide during discharge, and the concentration of carbon dioxide in industrial waste gas can be increased from 15% to 35%; if high-concentration carbon dioxide tail gas, such as 55% tail gas, is introduced during the discharge stage, the concentration can be increased to 85%, achieving carbon dioxide capture. Connecting multiple devices in parallel can increase the amount of tail gas processed, and the tail gas concentration can be increased to more than 95% when the tail gas passes through multiple devices in series.

[0103] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A carbon dioxide capture assembly, characterized in that: It includes a ring-shaped positive electrode (201); an annular diaphragm (202) disposed in the inner cavity of the annular positive electrode (201) and spaced apart from the annular positive electrode (201); An electrolyte redistributor (203) non-contactly disposed horizontally on the top of the annular positive electrode (201); A plurality of negative electrodes (204) arranged at intervals in the inner cavity of the annular diaphragm (202); The annular positive electrode (201) is connected to a wire for connecting to the positive electrode of a power source; the plurality of negative electrodes (204) are connected to a wire for connecting to the negative electrode of a power source.

2. The carbon dioxide capture assembly according to claim 1, characterized in that The distance between the electrolyte redistributor (203) and the top of the annular positive electrode (201) is 1 to 100 mm; The inner diameter of the annular positive electrode (201) is 5 mm to 9.9 m, the outer diameter is 1.01 to 2 times the inner diameter, and the height is 10 mm to 1 m.

3. The carbon dioxide capture assembly according to claim 1, characterized in that The thickness of the annular diaphragm (202) is 0.02 to 1 mm; the diameter of the annular diaphragm (202) is 5 to 9.9 mm.

4. The carbon dioxide capture assembly according to claim 1 or 3, characterized in that: The distance between the annular separator (202) and the outermost negative electrode (204) is 0 to 100 mm.

5. The carbon dioxide capture assembly according to claim 1, characterized in that The number of the negative electrodes (204) is 1 to 10,000; When the number of the negative electrodes (204) is ≥2, the spacing between adjacent negative electrodes (204) is 0.01 to 100 mm.

6. A supercapacitor carbon dioxide capture device, characterized in that: comprising a housing (103); a plurality of carbon dioxide capture assemblies (200) located inside the housing (103); an electrolyte inlet located at the upper end of the side of the housing (103); An electrolyte flow dividing device (101) located at the top of the housing (103), wherein the inlet of the electrolyte flow dividing device (101) is connected to the electrolyte inlet, and the outlet is connected to the inlet of the electrolyte redistributor (203) in the carbon dioxide capture assembly (200) adjacent to the electrolyte flow dividing device (101); The bottom of the housing (103) is provided with an exhaust gas inlet, which is located below the lowest carbon dioxide capture assembly (200); The carbon dioxide capture assembly (200) is the carbon dioxide capture assembly according to any one of claims 1 to 5.

7. The supercapacitor carbon dioxide capture device according to claim 6, characterized in that: The top of the shell (103) is provided with a captured tail gas outlet and a high-concentration tail gas outlet; the bottom of the shell (103) is also provided with an electrolyte outlet; The number of the carbon dioxide capture components (200) is 2 to 100,000; The adjacent carbon dioxide capture assemblies (200) are connected in series.

8. The supercapacitor carbon dioxide capture device according to claim 7, characterized in that: It also includes: a tail gas humidifying device (102); The tail gas humidifying device (102) is connected to the tail gas inlet, and the tail gas enters the housing (103) through the tail gas humidifying device (102) and the tail gas inlet (G3).

9. Use of the supercapacitor carbon dioxide capture device according to any one of claims 6 to 8 in capturing carbon dioxide in exhaust gas.

10. A method for capturing carbon dioxide, characterized in that: The supercapacitor carbon dioxide capture device according to any one of claims 6 to 8 comprises the following steps: The electrolyte enters the electrolyte diversion device (101) through the electrolyte inlet, and the electrolyte diversion device (101) continuously sprays the electrolyte onto the carbon dioxide capture component (200) through the electrolyte redistributor (203), and continuously passes the exhaust gas into the shell (103) through the tail gas inlet to contact the carbon dioxide capture component (200) in a charged state to capture carbon dioxide.

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