A central chamber of a porous solid electrolyte reactor

Abstract

The present invention discloses a central chamber of a porous solid electrolyte reactor, comprising a body, an electrolyte fixing structure, and a fluid uniform distribution structure; the electrolyte fixing structure comprises two groups of electrolyte tank groups arranged on the front and back sides of the body; each group of electrolyte tank groups comprises multiple electrolyte tanks; the fluid uniform distribution structure comprises a transverse fluid uniform distribution structure and a longitudinal fluid uniform distribution structure; the longitudinal fluid uniform distribution structure comprises multiple longitudinal fluid guide grooves uniformly distributed on the wide sides of the electrolyte tank; the transverse fluid uniform distribution structure comprises two transverse fluid guide grooves arranged at both ends of the electrolyte tank group in the longitudinal direction on the front side of the body and multiple transverse fluid distribution columns arranged inside the transverse fluid guide grooves. The present invention has uniform fluid flow, high stability, and is easy to install. The four-sided fixing hole design makes installation even easier; the fluid uniform distribution structure design ensures smooth fluid flow; the electrolyte tank has an average internal area, effectively fixes solid electrolyte particles, and prevents blockage and leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of electrochemical reactors, and in particular relates to a central chamber of a porous solid electrolyte reactor. Background Art

[0002] Electrocatalytic reactors play a vital role in energy conversion and environmental protection. In energy conversion, they are used to efficiently convert electrical energy into chemical energy, such as in water electrolysis to produce hydrogen and carbon dioxide reduction reactions. These reactors can efficiently generate hydrogen or convert carbon dioxide into useful chemicals, promoting the development of renewable energy and reducing greenhouse gas emissions. In environmental protection, electrocatalytic reactors can help treat pollutants, such as removing harmful organic matter through electrocatalytic oxidation, and improving water and air quality. These applications not only promote the use of green energy but also provide effective technical solutions for environmental governance.

[0003] The liquid products of traditional H-type cells, flow cells, and membrane electrode reactors are usually mixed in the electrolyte solution. These liquid products require additional separation and concentration steps to produce pure liquid fuel. Solid electrolyte reactors have become a promising alternative to traditional electrolytic cells. By decoupling the ion conduction and product collection in the electrolyte, a porous solid electrolyte layer (PSE) is used in the central chamber between the cathode and the anode to achieve rapid ion transfer. The products can be effectively collected in the fluid passing through the central chamber without involving any impurity ions. As the core, the central chamber of the solid electrolyte reactor needs to ensure the smoothness and stability of the fluid passing through.

[0004] However, the existing central chamber structure often has problems such as solid electrolyte particles blocking the flow channel and uneven fluid flow, which may cause damage to the catalyst and anion / cation membrane inside the reactor, increase the cost of electrochemical conversion, and at the same time, the stability of the fluid passing through the central chamber is difficult to meet the requirements.

[0005] Therefore, providing a central chamber structure of a porous solid electrolyte reactor with uniform fluid flow, high stability and easy installation is a problem that technicians in this field urgently need to solve. Summary of the Invention

[0006] The present invention is proposed to overcome the shortcomings of the prior art, and its purpose is to provide a central chamber of a porous solid electrolyte reactor.

[0007] The present invention is achieved through the following technical solutions:

[0008] A central chamber of a porous solid electrolyte reactor comprises a main body, an electrolyte fixing structure and a fluid uniform distribution structure; the electrolyte fixing structure comprises two groups of electrolyte tank groups respectively arranged in the middle of the front and back sides of the main body; each group of electrolyte tank groups comprises a plurality of electrolyte tanks arranged at equal intervals and of the same size; the fluid uniform distribution structure comprises a transverse fluid uniform distribution structure and a longitudinal fluid uniform distribution structure; the longitudinal fluid uniform distribution structure comprises a plurality of longitudinal fluid guide grooves uniformly distributed on the wide sides of the electrolyte tank; the transverse fluid uniform distribution structure comprises two transverse fluid guide grooves arranged at both ends of the length direction of the electrolyte tank group on the front side of the main body and a plurality of transverse fluid distribution columns arranged inside the transverse fluid guide grooves.

[0009] In the above technical solution, the two groups of electrolyte tanks are arranged correspondingly.

[0010] In the above technical solution, the electrolyte tank is a rectangular tank.

[0011] In the above technical solution, the longitudinal fluid guiding groove is opened along the long direction of the electrolyte tank.

[0012] In the above technical solution, the length of the transverse fluid guide groove is greater than the sum of the widths of the electrolyte tank group; one end of the transverse fluid guide groove is flush with the electrolyte tank group, and the other end exceeds the electrolyte tank group, and the exceeding ends of the transverse fluid guide grooves at the upper and lower ends are staggered.

[0013] In the above technical solution, the longitudinal fluid guiding groove on the front side of the main body is connected to the electrolyte tank and the transverse fluid guiding groove.

[0014] In the above technical solution, the plurality of transverse fluid distribution columns are arranged at intervals, and the transverse fluid distribution columns and the transverse fluid guiding grooves are arranged coaxially.

[0015] In the above technical solution, a plurality of fixing holes are evenly distributed on the edge of the body; the plurality of fixing holes are evenly distributed around the center of the body; and the diameter of the fixing holes is ≤4 mm.

[0016] In the above technical solution, the main body is a thin plate structure, and the thickness of the main body is ≤3mm.

[0017] In the above technical solution, the width of the transverse fluid guiding groove is ≤5 mm; the width of the transverse fluid distribution column is ≤3 mm; and the width of the longitudinal fluid guiding groove is ≤1.5 mm.

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

[0019] The present invention provides a central chamber of a porous solid electrolyte reactor, which has the characteristics of uniform fluid flow, high stability and easy installation. Fixing holes are set on the four sides of the body of the central chamber, showing central symmetry and easier installation; fluid uniform distribution structures are set on the upper and lower sides of the internal area of ​​the central chamber body, namely two horizontal fluid flow grooves, multiple horizontal fluid distribution columns and multiple longitudinal fluid flow grooves, to reduce uneven fluid distribution and ensure smooth fluid flow; the average internal area of ​​the electrolyte tank is set to effectively fix the solid electrolyte particles, prevent blockage and leakage, ensure the strength of the filler, increase the service life, and improve the fluid flow stability; the material of the central chamber body meets the flux requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the present invention;

[0021] Figure 2 It is a rear view of the present invention;

[0022] Figure 3 is a perspective view of the present invention;

[0023] Figure 4 It is a three-dimensional view of the traditional central chamber;

[0024] Figure 5 It is a schematic diagram of the decomposed structure of the solid electrolyte reactor to which the present invention is applied.

[0025] in:

[0026] 1. Main body; 2. Electrolyte tank; 3. Horizontal fluid guide groove; 4. Horizontal fluid distribution column; 5. Longitudinal fluid guide groove; 6. Fixing hole; 7. Anode; 8. Cathode.

[0027] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] like Figures 1 to 3 As shown, a central chamber of a porous solid electrolyte reactor includes a body 1, an electrolyte fixing structure and a fluid uniform distribution structure;

[0030] The electrolyte fixing structure includes two groups of electrolyte tank groups, one group is arranged in the middle of the front of the body 1, and the other group is arranged in the middle of the back of the body 1, and the two groups of electrolyte tank groups are arranged correspondingly; each group of electrolyte tank groups includes a plurality of electrolyte tanks 2 arranged at equal intervals and of the same size; the electrolyte tanks 2 are rectangular tanks;

[0031] The fluid uniform distribution structure includes a transverse fluid uniform distribution structure and a longitudinal fluid uniform distribution structure.

[0032] The longitudinal fluid uniform distribution structure includes a plurality of longitudinal fluid guide grooves 5 uniformly distributed on the wide side of the electrolyte tank 2, and the longitudinal fluid guide grooves 5 are opened along the long direction of the electrolyte tank 2;

[0033] The transverse fluid uniform distribution structure includes two transverse fluid guiding grooves 3 provided at both ends of the electrolyte tank group in the longitudinal direction on the front side of the body 1 and a plurality of transverse fluid distribution columns 4 provided inside the transverse fluid guiding grooves 3;

[0034] The length of the transverse fluid guiding groove 3 is greater than the sum of the widths of the electrolyte tank group;

[0035] One end of the transverse fluid guiding groove 3 is flush with the electrolyte tank group, and the other end extends beyond the electrolyte tank group, and the extending ends of the upper and lower transverse fluid guiding grooves 3 are staggered.

[0036] The longitudinal fluid guide groove 5 on the front of the main body 1 connects the electrolyte tank 2 and the transverse fluid guide groove 3, and the longitudinal fluid guide groove 5 on the back of the main body 1 optimizes the fluid flow channel, allowing the fluid to flow in both positive and negative directions; the design of the longitudinal fluid uniform distribution structure can, on the one hand, avoid solid electrolyte particles from clogging the longitudinal fluid flow groove, and on the other hand, effectively alleviate the pressure difference between the liquid inlet and outlet, so that the fluid is more evenly distributed in each electrolyte tank 2 and flows more smoothly, thereby forming a uniform fluid flow pattern in the entire electrolyte tank group.

[0037] The plurality of transverse fluid distribution columns 4 are arranged at intervals, and the transverse fluid distribution columns 4 are coaxially arranged with the transverse fluid guide groove 3;

[0038] A plurality of fixing holes 6 are evenly distributed on the edge of the body 1 .

[0039] The body 1 is a thin plate structure cut from a thin plate, and the thickness of the body 1 is ≤3mm;

[0040] The plurality of fixing holes 6 are evenly distributed around the center of the body 1 ; the diameter of the fixing hole 6 is ≤4 mm.

[0041] The width of the transverse fluid guiding groove 3 is ≤5mm;

[0042] The width of the transverse fluid distribution column 4 is ≤3 mm;

[0043] The width of the longitudinal fluid guiding groove 5 is ≤1.5 mm.

[0044] Application Example 1

[0045] A solid electrolyte reactor was used to reduce CO2 to produce high-purity formic acid solution. The size of the solid electrolyte electrolytic cell used was 150×150 mm, and the electrolyte fixed structure area of ​​the central chamber was 100×100 mm.

[0046] BiOBr sprayed on hydrophobic carbon paper (100 × 100 mm) was used as cathode 8 to reduce carbon dioxide to prepare high-purity formic acid solution with a loading of 0.6 mg cm -2 Ruthenium-iridium electroplated on titanium foam as anode 7, electrolyzed water to produce oxygen, with a loading of 1 mg cm -2 , IR120 is used as solid electrolyte to assemble solid electrolyte reactor ( Figure 5 ).

[0047] The traditional central chamber has a single flow channel for liquid inlet / outlet and a whole internal electrolyte area ( Figure 4 ), with problems such as uneven fluid flow and easy clogging and leakage of solid electrolyte particles. The reaction was carried out using a solid electrolyte reactor equipped with a traditional central chamber. The assembly process of the traditional central chamber requires the use of auxiliary fixings to fix it, and then the assembly of the entire solid electrolyte reactor is completed through the four holes in the four corners. Among them, the CO2 gas flow rate is 100sccm, the flow rate of DI water into the anode is 100rpm / min, and the flow rate of DI water into the solid electrolyte layer is 5ml·min -1 , at 50mA / cm 2 At a current density of , the Faradaic efficiency (FE) of formic acid is 86%, the concentration of formic acid solution is 5.34 M, and the reaction is stable for 11 h;

[0048] The present invention used a reactor with the same solid electrolyte area for the reaction. The assembly process utilized fixing holes and bolt fasteners for positioning and connection, eliminating the need for other auxiliary fasteners. The entire solid electrolyte reactor was assembled using the same four holes at the four corners. While maintaining all other experimental conditions identical, the Faradaic efficiency (FE) of formic acid was 95%, resulting in a high-purity formic acid aqueous solution with a concentration of 7.49M, which operated stably for 42 hours.

[0049] Experiments have shown that the present invention has the characteristics of uniform fluid flow, high stability and simple installation. At present, in the laboratory stage, the solid electrolyte reactor of the present invention is not only suitable for conducting experiments in the field of CO2 reduction, but also for the reduction of O2 and other gases.

[0050] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The applicant declares that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A central chamber of a porous solid electrolyte reactor, characterized in that: It comprises a body (1), an electrolyte fixing structure and a fluid uniform distribution structure; The electrolyte fixing structure comprises two groups of electrolyte tanks respectively arranged in the middle of the front and back surfaces of the body (1); each group of electrolyte tanks comprises a plurality of electrolyte tanks (2) arranged at equal intervals and of the same size; The fluid uniform distribution structure includes a transverse fluid uniform distribution structure and a longitudinal fluid uniform distribution structure. The longitudinal fluid uniform distribution structure comprises a plurality of longitudinal fluid guide grooves (5) uniformly distributed on the wide side of the electrolyte tank (2); The transverse fluid uniform distribution structure comprises two transverse fluid guide grooves (3) arranged at both ends of the electrolyte tank group in the longitudinal direction on the front side of the body (1) and a plurality of transverse fluid distribution columns (4) arranged inside the transverse fluid guide grooves (3).

2. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The two groups of electrolyte tanks are arranged correspondingly.

3. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The electrolyte tank (2) is a rectangular tank.

4. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The longitudinal fluid guide groove (5) is opened along the long direction of the electrolyte tank (2).

5. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The length of the transverse fluid guiding groove (3) is greater than the sum of the widths of the electrolyte tank group; one end of the transverse fluid guiding groove (3) is flush with the electrolyte tank group, and the other end exceeds the electrolyte tank group, and the exceeding ends of the transverse fluid guiding grooves (3) at the upper and lower ends are staggered.

6. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The longitudinal fluid guiding groove (5) on the front side of the body (1) is connected to the electrolyte tank (2) and the transverse fluid guiding groove (3).

7. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The plurality of transverse fluid distribution columns (4) are arranged at intervals, and the transverse fluid distribution columns (4) and the transverse fluid guide groove (3) are coaxially arranged.

8. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: A plurality of fixing holes (6) are evenly distributed on the edge of the body (1); the plurality of fixing holes (6) are evenly distributed with the center of the body (1) as the center; and the diameter of the fixing holes (6) is ≤4 mm.

9. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The body (1) is a thin plate structure, and the thickness of the body (1) is ≤3 mm.

10. The central chamber of the porous solid electrolyte reactor according to claim 1, characterized in that: The width of the transverse fluid guiding groove (3) is ≤5 mm; the width of the transverse fluid distribution column (4) is ≤3 mm; and the width of the longitudinal fluid guiding groove (5) is ≤1.5 mm.

Images