Large-size electro-catalytic carbon dioxide reactor with same direction flow of anode and cathode

Abstract

This invention discloses a large-size electrocatalytic carbon dioxide reactor with co-current flow at the anode and cathode, comprising a reactor body and a stable support mechanism distributed at the bottom of the reactor body; a combined electrode mechanism is installed in the middle of the reactor body; the main shell includes a liquid inlet bottom plate and side plates symmetrically arranged at both ends of the liquid inlet bottom plate, with two liquid inlet holes symmetrically arranged in the middle of the liquid inlet bottom plate; the combined electrode mechanism includes symmetrically distributed sealing side plates, with an anode plate and a cathode plate alternately distributed between the two sealing side plates, and a bipolar membrane plate is provided between the anode plate and the cathode plate, with catalyst evenly distributed on the surface of the bipolar membrane plate. This invention, through its large-size, combined reactor design, not only enables stable operation and large-scale application, but also, by using a bipolar membrane plate between the anode and cathode, improves the transport efficiency of protons and hydroxide anions while isolating gas transport, increasing the reaction rate; furthermore, the catalyst coated on the bipolar membrane plate further enhances the reaction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of carbon dioxide electrolysis, and particularly relates to a large-size electrocatalytic carbon dioxide reactor with co-current anode and cathode. Background Technology

[0002] To address climate change and achieve the "dual carbon" goal, electrocatalytic reduction of carbon dioxide into fuels such as carbon monoxide, methanol, and formic acid is a promising approach. This approach enables the resource utilization of carbon dioxide and the effective storage of clean energy, significantly improving the absorption capacity of new energy power generation systems such as solar and wind power, and achieving a green carbon cycle.

[0003] Catalytic conversion technologies for carbon dioxide include photocatalysis, thermocatalysis, enzyme catalysis, plasma catalysis, and electrocatalysis. Among these, photocatalysis has very low conversion efficiency; thermocatalysis requires harsh conditions of high temperature and pressure and has low selectivity for specific target products; enzyme catalysis has high requirements for the reaction microenvironment and the cost of coenzymes is also high; plasma catalysis can achieve very high conversion rates, but its energy efficiency is very low; electrocatalysis of carbon dioxide can be carried out in aqueous solutions at room temperature and pressure, without the need for complex reaction equipment, and can utilize renewable electricity to achieve carbon dioxide reduction under mild conditions, demonstrating its unique technological advantages and facilitating large-scale practical applications.

[0004] Current electrocatalytic reduction reactors for carbon dioxide are mostly in the laboratory stage, and they use a single anode and cathode to form a simple electrolysis structure. They are small in size, have low efficiency and low yield, making it difficult to promote them to large-scale industrial applications. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems in the prior art and provide a large-size electrocatalytic carbon dioxide reactor with co-current anode and cathode.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] A large-size electrocatalytic carbon dioxide reactor with co-current anode and cathode includes a reactor body and a stable support structure distributed at the bottom of the reactor body.

[0008] The reactor body includes a main shell and an inlet sealing plate and an outlet sealing plate installed on the front and rear sides of the main shell. An inlet manifold is installed on the top of the inlet sealing plate and an outlet manifold is installed on the top of the outlet sealing plate.

[0009] A combined electrode plate mechanism is installed in the middle of the reactor body;

[0010] The main housing includes a liquid inlet base plate and side plates symmetrically arranged at both ends of the liquid inlet base plate. Two liquid inlet holes are symmetrically arranged in the middle of the liquid inlet base plate.

[0011] The combined electrode plate mechanism includes symmetrically distributed sealing side plates, with an anode plate and a cathode plate interleaved between the two sealing side plates, and a bipolar film plate between the anode plate and the cathode plate, with catalyst evenly distributed on the surface of the bipolar film plate;

[0012] An overflow groove is provided at the top of the inner side of the vent sealing plate, and a flow guide groove is provided at the end of the overflow groove. A flow guide hole connected to the flow guide groove is provided at the bottom of the outer surface of the vent sealing plate.

[0013] Furthermore, a sealing top plate is installed on the top of the main housing, and an inlet connector is installed in the middle of the sealing top plate.

[0014] Furthermore, lens mounting seats are symmetrically installed on the top of the left and right sides of the main housing, and an observation mirror is installed in the middle of the lens mounting seat; an observation hole is provided at the top of the side plate; the lens mounting seat includes a tube that mates with the observation hole, an annular limiting protrusion is provided on the outside of the tube, and an observation mirror is fixed in the middle of the tube.

[0015] Furthermore, the front and rear end faces of the main housing are provided with sealing grooves, the inner edge of the air intake sealing plate is provided with a first sealing protrusion that cooperates with the sealing groove, and the inner edge of the air outlet sealing plate is provided with a second sealing protrusion that cooperates with the sealing groove.

[0016] Furthermore, a support boss is provided between the two liquid inlet holes.

[0017] Furthermore, the top of the intake sealing plate is evenly distributed with intake holes; the intake manifold includes an intake horizontal pipe, an intake end pipe is connected to the outer side of the middle of the intake horizontal pipe, and intake insertion pipes that match the intake holes are evenly distributed on the inner side of the middle of the intake horizontal pipe; exhaust holes corresponding to the intake holes are evenly distributed above the overflow groove; the exhaust manifold has the same structure as the intake manifold.

[0018] Furthermore, the sealing top plate is provided with a joint fixing hole in the middle; the inlet connector includes an inlet threaded tube that mates with the joint fixing hole, and an adjusting block and an inlet sealing tube are connected in sequence to the outer end of the inlet threaded tube.

[0019] Furthermore, the stabilizing support mechanism includes clamping supports symmetrically distributed on the left and right, two connecting beams symmetrically distributed between the two clamping supports, and a synchronous connecting rod installed between the two connecting beams;

[0020] The clamping support includes a top support plate and symmetrically arranged support plates on both sides of the top support plate. A clamping side plate is vertically arranged on the outer side of the top support plate. A connecting transverse groove that mates with the connecting crossbeam is symmetrically arranged in the middle of the top support plate. An inclined fastening screw hole is provided at the bottom end of the connecting transverse groove. The top of the fastening screw hole is close to the clamping side plate, and a fastening bolt is installed in the middle of the fastening screw hole. A synchronous insertion hole that mates with the synchronous connecting rod is provided in the middle of the connecting crossbeam. Moving slots are symmetrically arranged on the left and right sides of the synchronous insertion hole.

[0021] The beneficial effects of this invention are:

[0022] This invention, through its large-size, modular reactor design, not only enables stable operation and large-scale application, but also improves the transport efficiency of protons and hydroxide anions by employing a bipolar membrane plate between the anode and cathode, thereby increasing the reaction rate while isolating gas transmission. Furthermore, the catalyst coated on the bipolar membrane plate further enhances reaction efficiency. The stable support mechanism design facilitates fixed support for reactor bodies of different sizes. The sliding adjustment of the connecting beams and connecting slots accommodates different clamping sizes. While fastening with bolts, the inclined setting of the bolt holes further tightens the clamping side plates against both sides of the reactor body, enhancing stability and safety. The synchronous connecting rod ensures the synchronization of the two connecting beams during adjustment and ensures the front and rear of the moving slots correspond, facilitating the movement of large-size reactors. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the present invention;

[0026] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0027] Figure 4 This is a partial exploded view of the structure of the present invention;

[0028] Figure 5 This is a partial exploded view of the structure of the present invention;

[0029] Figure 6 This is a partial exploded view of the structure of the present invention;

[0030] Figure 7 This is a partial exploded view of the structure of the present invention;

[0031] Figure 8 This is a partial structural cross-sectional view of the present invention;

[0032] Figure 9 This is a partial exploded view of the structure of the present invention;

[0033] Figure 10 This is a partial exploded view of the structure of the present invention;

[0034] Figure 11 This is a partial structural schematic diagram of the present invention;

[0035] Figure 12 This is a partial exploded view of the structure of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0038] like Figure 1 The large-size electrocatalytic carbon dioxide reactor shown includes a reactor body 10 and a stable support mechanism 20 distributed at the bottom of the reactor body 10.

[0039] like Figure 2 As shown, the reactor body 10 includes a main shell 1 and an inlet sealing plate 2 and an outlet sealing plate 3 installed on the front and rear sides of the main shell 1. An inlet manifold 4 is installed at the top of the inlet sealing plate 2, and an outlet manifold 5 is installed at the top of the outlet sealing plate 3. A sealing top plate 6 is installed at the top of the main shell 1, and an inlet connector 7 is installed in the middle of the sealing top plate 6. Lens mounting seats 8 are symmetrically installed at 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.

[0040] like Figure 3 and Figure 4 As shown, a combined electrode plate mechanism 30 is installed in the middle of the reactor body 10;

[0041] like Figure 5 As shown, the main housing 1 includes a liquid inlet base plate 11 and side plates 12 symmetrically arranged at both ends of the liquid inlet base plate 11. The front and rear end faces of the main housing 1 are provided with sealing grooves 13. The liquid inlet base plate 11 is symmetrically provided with two liquid inlet holes 16 in the middle. A support boss 14 is provided between the two liquid inlet holes 16. The top of the side plate 12 is provided with an observation hole 15. The lens mounting base 8 includes a tube 81 that mates with the observation hole 15. The outer side of the tube 81 is provided with an annular limiting protrusion 82. An observation mirror 9 is fixed in the middle of the tube 81.

[0042] like Figure 6 As shown, the combined electrode mechanism 30 includes sealing side plates 301 symmetrically distributed on the left and right, an anode plate 302 and a cathode plate 303 are staggered between the two sealing side plates 301, a bipolar film 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 film plate 304.

[0043] like Figure 7 As shown, the inner edge of the air intake sealing plate 2 is provided with a first sealing protrusion 21 that cooperates with the sealing groove 13, and the top of the air intake sealing plate 2 is evenly distributed with air intake holes 22; the air intake manifold 4 includes an air intake horizontal pipe 41, an air intake end pipe 42 is connected to the outer side of the middle of the air intake horizontal pipe 41, and an air intake insertion pipe 43 that cooperates with the air intake holes 22 is evenly distributed on the inner side of the middle of the air intake horizontal pipe 41.

[0044] like Figure 8 and Figure 9 As shown, the inner edge of the air outlet sealing plate 3 is provided with a second sealing protrusion 31 that cooperates with the sealing groove 13. The top of the inner side of the air outlet sealing plate 3 is provided with an overflow groove 32. The end of the overflow groove 32 is provided with a vertical guide groove 33. The bottom of the outer surface of the air outlet sealing plate 3 is provided with a guide hole 35 that communicates with the guide groove 33. The overflow groove 32 is evenly distributed with air outlet holes 34 corresponding to the air inlet hole 22. The air outlet manifold 5 has the same structure as the air inlet manifold 4.

[0045] like Figure 10 As shown, the sealing top plate 6 has a connector fixing hole 61 in the middle; the inlet connector 7 includes an inlet threaded tube 71 that mates with the connector fixing hole 61, and the outer end of the inlet threaded tube 71 is connected in sequence to an adjusting block 72 and an inlet sealing tube 73.

[0046] like Figure 11 As shown, the stabilizing support mechanism 20 includes clamping supports 201 symmetrically distributed on the left and right, two connecting beams 202 symmetrically distributed between the two clamping supports 201, and a synchronous connecting rod 203 installed between the two connecting beams 202.

[0047] like Figure 12 As shown, the clamping support 201 includes a supporting top plate 2011 and supporting vertical plates 2013 symmetrically arranged on both sides of the supporting top plate 2011. A clamping side plate 2012 is vertically arranged on the outer side of the supporting top plate 2011. A connecting horizontal groove 2014 that cooperates with the connecting crossbeam 202 is symmetrically arranged in the middle of the supporting top plate 2011. An inclined fastening screw hole 2015 is provided at the bottom end of the connecting horizontal groove 2014. The top of the fastening screw hole 2015 is close to the clamping side plate 2012. A fastening bolt 2016 is installed in the middle of the fastening screw hole 2015. A synchronous insertion hole 2021 that cooperates with the synchronous connecting rod 203 is provided in the middle of the connecting crossbeam 202. Moving slots 2022 are symmetrically arranged on the left and right sides of the synchronous insertion hole 2021.

[0048] The design of the stabilizing support mechanism 20 is conducive to fixing and supporting reactor bodies 10 of different sizes. The sliding adjustment of the connecting crossbeam 202 and the connecting cross groove 2014 is suitable for different clamping sizes. While being tightened by the fastening bolt 2016, the inclined setting of the fastening screw hole 2015 can further tighten the clamping side plate 2012 on both sides of the reactor body 10, improving stability and safety. The setting of the synchronous connecting rod 203 ensures the synchronization of the two connecting crossbeams 202 during the adjustment process, and makes the moving slot 2022 correspond front and back, which facilitates the movement of large-sized reactors.

[0049] In practical use, carbon dioxide is mixed into water and introduced through two inlet holes 16, and an electrolytic reaction occurs between the anode plate 302 and the cathode plate 303. Since a bipolar membrane plate 304 is used between the anode and cathode, the transmission efficiency of protons and hydroxide anions is improved while isolating gas transmission, thus increasing the reaction rate. At the same time, the catalyst coated on the bipolar membrane plate 304 further improves the reaction efficiency. The liquid and products after the reaction are finally collected through the overflow tank 32, the guide tank 33, and the guide hole 35, so that the electrocatalytic reaction can be carried out in a cycle. At the same time, nitrogen is introduced and purged through the air intake manifold 4, and the internal gas is discharged through the air outlet manifold 5.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A large-size electrocatalytic carbon dioxide reactor with co-current anode and cathode, characterized in that: It includes the reactor body (10) and a stable support mechanism (20) distributed at the bottom of the reactor body (10); The reactor body (10) includes a main shell (1) and an inlet sealing plate (2) and an outlet sealing plate (3) installed on the front and rear sides of the main shell (1). An inlet manifold (4) is installed on the top of the inlet sealing plate (2) and an outlet manifold (5) is installed on the top of the outlet sealing plate (3). A combined electrode plate mechanism (30) is installed in the middle of the reactor body (10); The main housing (1) includes a liquid inlet bottom plate (11) and side upright plates (12) symmetrically arranged at both ends of the liquid inlet bottom plate (11). Two liquid inlet holes (16) are symmetrically arranged in the middle of the liquid inlet bottom plate (11). The combined electrode mechanism (30) includes symmetrically distributed sealing side plates (301), an anode plate (302) and a cathode plate (303) are staggered between the two sealing side plates (301), a bipolar film 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 film plate (304); An overflow groove (32) is provided at the top of the inner side of the air outlet sealing plate (3), and a guide groove (33) is provided vertically at the end of the overflow groove (32). A guide hole (35) connected to the guide groove (33) is provided at the bottom of the outer surface of the air outlet sealing plate (3). A sealing top plate (6) is installed on the top of the main housing (1), and an inlet connector (7) is installed in the middle of the sealing top plate (6); The main housing (1) has lens mounting bases (8) symmetrically installed on the top of the left and right sides, and an observation mirror (9) is installed in the middle of the lens mounting base (8); the top of the side plate (12) is provided with an observation hole (15); the lens mounting base (8) includes a tube (81) that cooperates with the observation hole (15), and an annular limiting protrusion (82) is provided on the outside of the tube (81), and the observation mirror (9) is fixed in the middle of the tube (81); The main housing (1) has sealing grooves (13) on the front and rear end faces, the inner side edge of the air inlet sealing plate (2) has a first sealing protrusion (21) that cooperates with the sealing groove (13), and the inner side edge of the air outlet sealing plate (3) has a second sealing protrusion (31) that cooperates with the sealing groove (13). A support boss (14) is provided between the two liquid inlet holes (16); The top of the intake sealing plate (2) is evenly distributed with intake holes (22); the intake manifold (4) includes an intake horizontal pipe (41), an intake end pipe (42) is connected to the outer side of the middle of the intake horizontal pipe (41), and intake insertion pipes (43) that cooperate with the intake holes (22) are evenly distributed on the inner side of the middle of the intake horizontal pipe (41); the overflow groove (32) is evenly distributed with exhaust holes (34) corresponding to the intake holes (22); the exhaust manifold (5) has the same structure as the intake manifold (4); The sealing top plate (6) has a connector fixing hole (61) in the middle; the inlet connector (7) includes an inlet threaded tube (71) that matches the connector fixing hole (61), and the outer end of the inlet threaded tube (71) is connected to an adjusting block (72) and an inlet sealing tube (73) in sequence; The stabilizing support mechanism (20) includes clamping supports (201) symmetrically distributed on the left and right, two connecting beams (202) symmetrically distributed between the two clamping supports (201), and a synchronous connecting rod (203) installed between the two connecting beams (202); The clamping support (201) includes a supporting top plate (2011) and supporting vertical plates (2013) symmetrically arranged on both sides of the supporting top plate (2011). A clamping side plate (2012) is vertically arranged on the outer side of the supporting top plate (2011). A connecting horizontal groove (2014) that cooperates with the connecting crossbeam (202) is symmetrically arranged in the middle of the supporting top plate (2011). A fastening screw hole (2015) is inclined at the bottom end of the connecting horizontal groove (2014). The top of the fastening screw hole (2015) is close to the clamping side plate (2012). A fastening bolt (2016) is installed in the middle of the fastening screw hole (2015). A synchronous insertion hole (2021) that cooperates with the synchronous connecting rod (203) is arranged in the middle of the connecting crossbeam (202). A moving slot (2022) is symmetrically arranged on the left and right sides of the synchronous insertion hole (2021).

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