A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode

Abstract

The present invention discloses a large-scale electrocatalytic carbon dioxide reactor with reverse flow on both sides of the anode and cathode, including a main shell, a combined plate mechanism is installed in the middle of the main shell; the combined plate mechanism includes a sealing side plate symmetrically distributed on the left and right, an anode plate and a cathode plate are staggered between the two sealing side plates, a bipolar membrane plate is arranged between the anode plate and the cathode plate, and a catalyst is evenly distributed on the surface of the bipolar membrane plate; an air inlet sealing shell is installed between the cathode plate and the top of the bipolar membrane plate, and an air inlet gas collecting shell is installed above the air inlet sealing shell; an air outlet sealing shell is installed between the cathode plate and the bottom of the bipolar membrane plate, and an air outlet gas collecting shell is installed below the air outlet sealing shell. The present invention is designed with a large size and a combined reactor, which can not only operate stably and be used on a large scale, but also further ensure the efficiency of the electrolysis reaction of carbon dioxide through the directional flow of water and carbon dioxide.

Description

Technical Field

[0001] The present invention belongs to the field of carbon dioxide electrolysis, and particularly relates to a large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the anode and cathode. Background Art

[0002] To address climate change, electrocatalytically reducing carbon dioxide into fuels such as carbon monoxide, methanol, and formic acid is a promising solution. It can achieve the resource utilization of carbon dioxide and the effective storage of clean energy electricity, greatly improve the accommodation capacity of new energy power generation systems such as solar and wind energy, and realize a green carbon cycle.

[0003] The catalytic conversion technologies of carbon dioxide include photocatalysis, thermocatalysis, enzyme catalysis, plasma catalysis, and electrocatalysis. Among them, the conversion efficiency of photocatalysis is too low; thermocatalysis requires harsh conditions of high temperature and high pressure and has low selectivity for specific target products; enzyme catalysis has high requirements for the microenvironment of the reaction and the cost of the required coenzymes is also high; although plasma catalysis can achieve a high conversion rate, its energy efficiency is very low; electrocatalytic carbon dioxide can be carried out in an aqueous solution at room temperature and normal pressure, does not require a complex reaction device, and can use renewable electric energy to realize the reduction process of carbon dioxide under mild conditions, showing its unique technical advantages and being conducive to large-scale practical applications.

[0004] Currently, most electrocatalytic carbon dioxide reduction reactors are in the laboratory stage and use a simple electrolysis structure formed by a single anode and cathode plate, with small size, low efficiency and output, and it is difficult to be promoted to large-scale industrial applications; moreover, when the space between the anode and cathode plates is filled with a flowing mixture of water and carbon dioxide, the relatively large spacing has a certain impact on the actual electrolysis efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above problems existing in the prior art and provide a large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the anode and cathode.

[0006] To achieve the above technical objectives and reach the above technical effects, the present invention is realized through the following technical solutions:

[0007] A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the anode and cathode, comprising a main housing, and a combined plate mechanism is installed in the middle of the main housing;

[0008] The combined plate mechanism includes a sealing side plate that is symmetrically distributed on the left and right, an anode plate and a cathode plate are staggered between the two sealing side plates, a bipolar membrane plate is arranged between the anode plate and the cathode plate, and a catalyst is evenly distributed on the surface of the bipolar membrane plate; an air inlet sealing shell is installed between the cathode plate and the top of the bipolar membrane plate, and an air inlet gas collecting shell is installed above the air inlet sealing shell; an air outlet sealing shell is installed between the cathode plate and the bottom of the bipolar membrane plate, and an air outlet gas collecting shell is installed below the air outlet sealing shell;

[0009] The air intake sealing housing comprises a first sealing beam and a first sealing stop plate arranged at the top of the first sealing beam, a first concave groove is arranged in the center of the bottom end of the first sealing beam, an air intake diversion cavity is opened in the middle of the first sealing stop plate, and two air intake guide grooves are symmetrically arranged on the bottom end surface of the first sealing beam; the air intake collecting housing comprises an air intake shell plate and an air intake collecting pipe arranged in the center of the air intake shell plate, and an air intake collecting cavity connected to the air intake collecting pipe is arranged at the bottom of the air intake shell plate;

[0010] The air outlet sealing shell includes a second sealing beam and a second sealing limit plate arranged at the top of the second sealing beam, a second recessed groove is arranged in the center of the top of the second sealing beam, a supporting groove is arranged on the bottom surface of the second sealing limit plate, air outlet diversion cavities are opened on both sides of the supporting groove, and two air outlet guide grooves are symmetrically arranged on the top of the second sealing beam; the air outlet collecting shell includes an air outlet shell plate and an air outlet collecting pipe arranged in the center of the air outlet shell plate, and an air outlet collecting cavity connected to the air outlet collecting pipe is arranged on the top of the air outlet shell plate.

[0011] Furthermore, an air intake sealing plate and an air outlet sealing plate are installed on the front and rear sides of the main shell body, an air intake manifold is installed on the top of the air intake sealing plate, an air outlet manifold is installed on the top of the air outlet sealing plate, a sealing top plate is installed on the top of the main shell body, an inlet connector is installed in the middle of the sealing top plate, lens mounting seats are symmetrically installed on the top of the left and right sides of the main shell body, and an observation mirror is installed in the middle of the lens mounting seat; carbon dioxide exhaust mechanisms are symmetrically installed at both ends of the bottom of the air intake sealing plate, and a carbon dioxide intake mechanism is installed below the intake manifold.

[0012] Furthermore, the carbon dioxide exhaust mechanism includes a positioning socket and a plug which are installed and connected in sequence along the axial direction, and connecting parts are evenly distributed between the positioning socket and the plug; the positioning socket includes an externally threaded positioning tube and a positioning connecting block which are connected to each other, and an internally threaded hole which is connected to the threaded positioning tube is provided in the middle of the positioning connecting block; the connecting parts include an externally threaded connecting tube, a transition connecting tube, and an internally threaded connecting tube which are connected in sequence, the externally threaded connecting tube is connected to the internally threaded hole, the internally threaded connecting tube corresponds to the externally threaded connecting tube, an air connecting tube is provided in the middle of the transition connecting tube, and the air connecting tube is connected to the air outlet collecting pipe through a first hose; the plug is cooperatively connected to the internally threaded connecting tube; the carbon dioxide intake mechanism has the same structure as the carbon dioxide exhaust mechanism, and the carbon dioxide intake mechanism is connected to the air intake collecting pipe through a second hose.

[0013] Further, intake air holes are evenly distributed at the top end of the intake air sealing plate. Exhaust air positioning holes that cooperate with the external thread positioning pipes are symmetrically arranged at the bottom end of the intake air sealing plate. Intake air positioning holes corresponding to the carbon dioxide intake mechanism are arranged below the intake air holes. The intake manifold includes an intake cross pipe. An intake end pipe is connected to the outer side of the middle of the intake cross pipe. Intake insertion pipes that cooperate with the intake air holes are evenly distributed on the inner side of the middle of the intake cross pipe.

[0014] An overflow groove is arranged at the top end of the inner side surface of the exhaust air sealing plate. A drainage groove is vertically arranged at the end of the overflow groove. A diversion hole communicating with the drainage groove is arranged at the bottom end of the outer surface of the exhaust air sealing plate. Air outlet holes corresponding to the intake air holes are evenly distributed above the overflow groove. The exhaust manifold has the same structure as the intake manifold.

[0015] Further, the main housing includes a liquid inlet bottom plate and side vertical plates symmetrically arranged at both ends of the liquid inlet bottom plate. Two water inlet holes are symmetrically arranged in the middle of the liquid inlet bottom plate. A support boss is arranged between the two water inlet holes.

[0016] Further, an observation hole that cooperates with the lens mounting seat is arranged at the top end of the side vertical plate.

[0017] Further, sealing grooves are arranged on the front and rear side end faces of the main housing. A first sealing protrusion that cooperates with the sealing groove is arranged at the edge of the inner side surface of the intake air sealing plate. A second sealing protrusion that cooperates with the sealing groove is arranged at the edge of the inner side surface of the exhaust air sealing plate.

[0018] The beneficial effects of the present invention are as follows:

[0019] Through the design of a large-size, combined reactor, the present invention can not only operate stably and be applied on a large scale, but also, by using a bipolar membrane between the anode and the cathode, while isolating gas transmission, improve the transmission efficiency of protons and hydroxide anions, increase the reaction rate, and at the same time, the catalyst coated on the bipolar membrane further improves the reaction efficiency. Water is input from the two water inlet holes, humidified carbon dioxide gas is introduced from the carbon dioxide intake mechanism and enters between the cathode plate and the bipolar membrane. An electrolysis reaction occurs between the carbon dioxide gas and water between the anode plate and the cathode plate. The carbon dioxide gas flows out from the lower carbon dioxide exhaust mechanism, and at the same time, the formic acid generated also flows out from the lower part under the action of gravity and air flow. Through the directional flow of water and carbon dioxide, the electrolysis reaction efficiency of carbon dioxide is further ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a schematic diagram of a partial structure of the present invention;

[0023] Figure 3 is an exploded view of a partial structure of the present invention;

[0024] Figure 4 is a schematic diagram of a partial structure of the present invention;

[0025] Figure 5 is an exploded view of a partial structure of the present invention;

[0026] Figure 6 is an exploded view of a partial structure of the present invention;

[0027] Figure 7 is an exploded view of a partial structure of the present invention;

[0028] Figure 8 is an exploded view of a partial structure of the present invention;

[0029] Figure 9 is an exploded view of a partial structure of the present invention;

[0030] Figure 10 is a schematic diagram of a partial structure of the present invention;

[0031] Figure 11 is an exploded view of a partial structure of the present invention;

[0032] Figure 12 is an exploded view of a partial structure of the present invention;

[0033] Figure 13 is a sectional view of a partial structure of the present invention;

[0034] Figure 14 is an exploded view of a partial structure of the present invention. Detailed Embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0037] like Figure 1 A large-scale electrocatalytic carbon dioxide reactor with reverse flow on both sides of the anode and cathode shown in the figure comprises a main shell 1, an air intake sealing plate 2 and an air outlet sealing plate 3 are installed on the front and rear sides of the main shell 1, an air intake manifold 4 is installed on the top of the air intake sealing plate 2, and an air outlet manifold 5 is installed on the top of the air outlet sealing plate 3, a sealing top plate 10 is installed on the top of the main shell 1, and an inlet connector 20 is installed in the middle of the sealing top plate 10, lens mounting seats 8 are symmetrically installed on the top of the left and right sides of the main shell 1, and an observation mirror 9 is installed in the middle of the lens mounting seat 8; carbon dioxide exhaust mechanisms 6 are symmetrically installed at both ends of the bottom of the air intake sealing plate 2, and a carbon dioxide intake mechanism 7 is installed below the intake manifold 4;

[0038] like Figure 2 As shown, a combined plate mechanism 30 is installed in the middle of the main housing 1;

[0039] like Figure 3 As shown, the main housing 1 includes a liquid inlet bottom plate 11 and side plates 12 symmetrically arranged at both ends of the liquid inlet bottom plate 11, two water inlet holes 16 are symmetrically arranged in the middle of the liquid inlet bottom plate 11, a supporting boss 14 is arranged between the two water inlet holes 16, an observation hole 15 matching with the lens mounting seat 8 is arranged at the top of the side plate 12, and sealing grooves 13 are arranged on the front and rear side end surfaces of the main housing 1;

[0040] like Figure 4 and Figure 5 As shown, the combined plate mechanism 30 includes a sealing side plate 301 symmetrically distributed on the left and right, an anode plate 302 and a cathode plate 303 are alternately distributed between the two sealing side plates 301, a bipolar membrane plate 304 is arranged between the anode plate 302 and the cathode plate 303, and a catalyst is evenly distributed on the surface of the bipolar membrane plate 304; an air inlet sealing shell 305 is installed between the cathode plate 303 and the top of the bipolar membrane plate 304, and an air inlet gas collecting shell 306 is installed above the air inlet sealing shell 305; an air outlet sealing shell 307 is installed between the cathode plate 303 and the bottom of the bipolar membrane plate 304, and an air outlet gas collecting shell 308 is installed below the air outlet sealing shell 307;

[0041] like Figure 6 and Figure 7 As shown, the air intake sealing housing 305 includes a first sealing beam 3051 and a first sealing stop plate 3052 arranged at the top of the first sealing beam 3051, a first concave groove 3053 is arranged in the center of the bottom end of the first sealing beam 3051, an air intake diversion cavity 3054 is opened in the middle of the first sealing stop plate 3052, and two air intake guide grooves 3055 are symmetrically arranged on the bottom end surface of the first sealing beam 3051; the air intake collecting housing 306 includes an air intake shell plate 3061 and an air intake collecting pipe 3062 arranged in the center of the air intake shell plate 3061, and an air intake collecting cavity 3063 connected to the air intake collecting pipe 3062 is arranged at the bottom of the air intake shell plate 3061;

[0042] As Figure 8 and Figure 9 shown, the exhaust gas sealing housing 307 includes a second sealing cross beam 3071 and a second sealing limit plate 3072 provided at the top end of the second sealing cross beam 3071. A second recessed groove 3073 is provided at the center of the top end of the second sealing cross beam 3071. A support card slot 3076 that cooperates with the support boss 14 is provided on the bottom surface of the second sealing limit plate 3072. Exhaust gas diversion cavities 3074 are formed on both sides of the support card slot 3076. Two exhaust gas diversion grooves 3075 are symmetrically provided on the top surface of the second sealing cross beam 3071; the exhaust gas collecting housing 308 includes an exhaust gas housing plate 3081 and an exhaust gas collecting pipe 3082 provided at the center of the exhaust gas housing plate 3081. An exhaust gas collecting cavity 3083 that communicates with the exhaust gas collecting pipe 3082 is provided at the top of the exhaust gas housing plate 3081;

[0043] As Figure 10 and Figure 11 shown, the carbon dioxide exhaust mechanism 6 includes a positioning card holder 61 and a plug 63 that are sequentially installed and connected along the axial direction. Connecting members 62 are evenly distributed between the positioning card holder 61 and the plug 63; the positioning card holder 61 includes an externally threaded positioning pipe 611 and a positioning connection block 612 that are connected to each other. An internal threaded hole 613 that communicates with the externally threaded positioning pipe 611 is provided in the middle of the positioning connection block 612; the connecting member 62 includes an externally threaded connecting pipe 621, a transition connecting pipe 622, and an internal threaded connecting pipe 623 that are sequentially connected. The externally threaded connecting pipe 621 is connected to the internal threaded hole 613. The internal threaded connecting pipe 623 corresponds to the externally threaded connecting pipe 621. An air intake pipe 624 is provided in the middle of the transition connecting pipe 622. The air intake pipe 624 is connected to the exhaust gas collecting pipe 3082 through a first hose; the plug 63 is connected in cooperation with the internal threaded connecting pipe 623; the carbon dioxide intake mechanism 7 has the same structure as the carbon dioxide exhaust mechanism 6. The carbon dioxide intake mechanism 7 is connected to the intake gas collecting pipe 3062 through a second hose;

[0044] As Figure 12 shown, a first sealing protrusion 21 that cooperates with the sealing groove 13 is provided on the inner side edge of the intake gas sealing plate 2. Intake holes 22 are evenly distributed at the top end of the intake gas sealing plate 2. Exhaust positioning holes 23 that cooperate with the externally threaded positioning pipe 611 are symmetrically provided at the bottom end of the intake gas sealing plate 2. Intake positioning holes 24 corresponding to the carbon dioxide intake mechanism 7 are provided below the intake holes 22; the intake manifold 4 includes an intake cross pipe 41. An intake end pipe 42 is connected to the outside of the middle of the intake cross pipe 41. Intake insertion pipes 43 that cooperate with the intake holes 22 are evenly distributed on the inside of the middle of the intake cross pipe 41;

[0045] As Figure 13 and Figure 14As shown in the figure, a second sealing protrusion 31 matching the sealing groove 13 is provided at the edge of the inner side surface of the air outlet sealing plate 3. An overflow groove 32 is provided at the top end of the inner side surface of the air outlet sealing plate 3. A drainage groove 33 is vertically provided at the end of the overflow groove 32. A diversion hole 35 communicating with the drainage groove 33 is provided at the bottom end of the outer surface of the air outlet sealing plate 3. Air outlet holes 34 corresponding to the air inlet holes 22 are evenly distributed above the overflow groove 32; the air outlet manifold 5 has the same structure as the air inlet manifold 4.

[0046] During specific use, water is input from the two water inlet holes 16, and humidified carbon dioxide gas is introduced from the carbon dioxide inlet mechanism 7 and enters between the cathode plate 303 and the bipolar membrane plate 304. An electrolysis reaction occurs between the carbon dioxide gas and the water between the anode plate 302 and the cathode plate 303. The carbon dioxide gas flows out from the lower carbon dioxide exhaust mechanism 6, and at the same time, the formic acid generated also flows out from the lower part under the action of gravity and air flow;

[0047] At the same time, since a bipolar membrane plate 304 is adopted between the anode and the cathode, while isolating gas transmission, it improves the transmission efficiency of protons and hydroxide anions, increases the reaction rate, and at the same time, the catalyst coated on the bipolar membrane plate 304 further improves the reaction efficiency; the water after the reaction is collected through the overflow groove 32, the drainage groove 33, and the diversion hole 35, so that the electrocatalytic reaction can be carried out cyclically; at the same time, nitrogen is input and purged through the air inlet manifold 4, and the internal gas is discharged through the air outlet manifold 5;

[0048] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A large-scale electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode, Features: It comprises a main housing (1), wherein a combined plate mechanism (30) is installed in the middle of the main housing (1); The combined plate mechanism (30) comprises a sealing side plate (301) symmetrically distributed on the left and right, an anode plate (302) and a cathode plate (303) are alternately distributed between the two sealing side plates (301), a bipolar membrane plate (304) is provided between the anode plate (302) and the cathode plate (303), and a catalyst is evenly distributed on the surface of the bipolar membrane plate (304); an air intake sealing shell (305) is installed between the cathode plate (303) and the top of the bipolar membrane plate (304), and an air intake gas collection shell (306) is installed above the air intake sealing shell (305); an air outlet sealing shell (307) is installed between the cathode plate (303) and the bottom of the bipolar membrane plate (304), and an air outlet gas collection shell (308) is installed below the air outlet sealing shell (307); The air intake sealing housing (305) comprises a first sealing crossbeam (3051) and a first sealing limit plate (3052) arranged at the top of the first sealing crossbeam (3051); a first recessed groove (3053) is arranged at the center of the bottom end of the first sealing crossbeam (3051); an air intake diversion cavity (3054) is opened in the middle of the first sealing limit plate (3052); and two air intake guide grooves (3055) are symmetrically arranged on the bottom end surface of the first sealing crossbeam (3051); the air intake collecting housing (306) comprises an air intake shell plate (3061) and an air intake collecting pipe (3062) arranged at the center of the air intake shell plate (3061); and an air intake collecting cavity (3063) connected to the air intake collecting pipe (3062) is arranged at the bottom of the air intake shell plate (3061); The air outlet sealing shell (307) comprises a second sealing beam (3071) and a second sealing limit plate (3072) arranged at the top of the second sealing beam (3071); a second recessed groove (3073) is arranged at the center of the top of the second sealing beam (3071); a supporting groove (3076) is arranged at the bottom of the second sealing limit plate (3072); air outlet flow dividing cavities (3074) are arranged on both sides of the supporting groove (3076); and two air outlet guide grooves (3075) are symmetrically arranged at the top of the second sealing beam (3071); the air outlet collecting shell (308) comprises an air outlet shell plate (3081) and an air outlet collecting pipe (3082) arranged at the center of the air outlet shell plate (3081); and an air outlet collecting cavity (3083) connected to the air outlet collecting pipe (3082) is arranged at the top of the air outlet shell plate (3081).

2. A large-scale electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode according to claim 1, Features: An intake air sealing plate (2) and an exhaust air sealing plate (3) are installed on the front and rear sides of the main housing (1). An intake manifold (4) is installed at the top end of the intake air sealing plate (2), and an exhaust manifold (5) is installed at the top of the exhaust air sealing plate (3). A sealing top plate (10) is installed at the top of the main housing (1), and an incoming line connector (20) is installed in the middle of the sealing top plate (10). Lens mounting seats (8) are symmetrically installed at the top ends on the left and right sides of the main housing (1), and observation lenses (9) are installed in the middle of the lens mounting seats (8); at both ends of the bottom of the intake air sealing plate (2), carbon dioxide exhaust mechanisms (6) are symmetrically installed, and a carbon dioxide intake mechanism (7) is installed below the intake manifold (4).

3. A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode according to claim 2, characterized in that: The carbon dioxide exhaust mechanism (6) includes a positioning clamping seat (61) and a plug (63) which are sequentially installed and connected along the axial direction. Connecting pieces (62) are evenly distributed between the positioning clamping seat (61) and the plug (63); the positioning clamping seat (61) includes an externally threaded positioning pipe (611) and a positioning connection block (612) which are connected to each other. An internal threaded hole (613) communicating with the externally threaded positioning pipe (611) is provided in the middle of the positioning connection block (612); the connecting piece (62) includes an externally threaded connecting pipe (621), a transition connecting pipe (622), and an internally threaded connecting pipe (623) which are sequentially connected. The externally threaded connecting pipe (621) is connected to the internal threaded hole (613), the internally threaded connecting pipe (623) corresponds to the externally threaded connecting pipe (621), an air connection pipe (624) is provided in the middle of the transition connecting pipe (622), and the air connection pipe (624) is connected to the exhaust gas collecting pipe (3082) through a first hose; the plug (63) is connected in cooperation with the internally threaded connecting pipe (623); the carbon dioxide intake mechanism (7) has the same structure as the carbon dioxide exhaust mechanism (6), and the carbon dioxide intake mechanism (7) is connected to the intake gas collecting pipe (3062) through a second hose.

4. A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode according to claim 2, characterized in that: Intake holes (22) are evenly distributed at the top end of the intake air sealing plate (2). Exhaust positioning holes (23) matching the externally threaded positioning pipe (611) are symmetrically provided at the bottom end of the intake air sealing plate (2). Intake positioning holes (24) corresponding to the carbon dioxide intake mechanism (7) are provided below the intake holes (22); the intake manifold (4) includes an intake horizontal pipe (41). An intake end pipe (42) is connected to the outside of the middle of the intake horizontal pipe (41). Intake insertion pipes (43) matching the intake holes (22) are evenly distributed inside the middle of the intake horizontal pipe (41); An overflow groove (32) is provided at the top end of the inner side of the exhaust air sealing plate (3). A drainage groove (33) is vertically provided at the end of the overflow groove (32). A diversion hole (35) communicating with the drainage groove (33) is provided at the bottom end of the outer surface of the exhaust air sealing plate (3). Air outlet holes (34) corresponding to the intake holes (22) are evenly distributed above the overflow groove (32); the exhaust manifold (5) has the same structure as the intake manifold (4).

5. A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode, according to claim 2, characterized in that: The main housing (1) includes a liquid inlet bottom plate (11) and side vertical plates (12) symmetrically arranged at both ends of the liquid inlet bottom plate (11). Two water inlet holes (16) are symmetrically arranged in the middle of the liquid inlet bottom plate (11), and a support boss (14) is arranged between the two water inlet holes (16).

6. A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode, according to claim 5, characterized in that: An observation hole (15) matching with the lens mounting seat (8) is arranged at the top of the side vertical plate (12).

7. A large-sized electrocatalytic carbon dioxide reactor with reverse flow on both sides of the cathode and anode, according to claim 1, characterized in that: Sealing grooves (13) are arranged on the front and rear side end faces of the main housing (1). First sealing protrusions (21) matching with the sealing grooves (13) are arranged on the inner side edges of the air inlet sealing plate (2), and second sealing protrusions (31) matching with the sealing grooves (13) are arranged on the inner side edges of the air outlet sealing plate (3).

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