Fixed bed reactor for synthesis of fuel from carbon dioxide

Abstract

The utility model relates to a fixed bed reactor for carbon dioxide synthetic fuel belongs to carbon dioxide synthetic fuel technical field, including the casing, the bottom fixed mounting of casing has the air inlet pipe, the inner bottom wall of casing is provided with the diffusion subassembly that links to each other with the air inlet pipe, the bottom of casing is provided with the drive assembly that drives diffusion subassembly rotation, diffusion subassembly includes the air inlet cover rotation mounting in the inner bottom wall of casing, the bottom of air inlet cover links to each other with the air inlet pipe, the top fixed mounting of air inlet cover has the diffusion board, diffusion board's top has seted up the diffusion hole. This fixed bed reactor for carbon dioxide synthetic fuel, through setting up diffusion subassembly in the inner bottom wall of casing, when hydrogen gas etc.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide synthesis fuel technology, specifically a fixed-bed reactor for carbon dioxide synthesis fuel. Background Technology

[0002] Carbon dioxide synthesis fuels are a technology that converts carbon dioxide into substances that can be used as fuels. Common methods for synthesizing carbon dioxide fuels include thermocatalytic synthesis, electrocatalytic synthesis, biosynthesis, and solid oxide battery-based electrolytic synthesis. Among them, thermocatalytic synthesis uses high temperature and catalysts to react carbon dioxide with hydrogen or other reducing agents to produce fuels such as hydrocarbons.

[0003] Fixed-bed reactors are required in the carbon dioxide synthesis fuel process. Utility model patent CN208786360U discloses a carbon dioxide hydrogenation fixed-bed reactor suitable for laboratory use. The reactor includes a shell with a control system display screen, an inlet, and an outlet. Inside the shell are a sieve plate for placing the catalyst and a support frame for supporting the sieve plate. The support frame includes at least two support legs, the bottom ends of which are fixed to the inner wall of the shell, and the top ends of the support legs are all on the same horizontal plane. A handle is movably connected to the bottom surface of the sieve plate for easy movement. This utility model provides a sieve plate and its supporting structure for placing the catalyst within the fixed-bed reactor. The sieve plate is detachable from the fixed-bed shell, allowing the sieve plate to be directly removed after the reaction is complete, and then another sieve plate containing the catalyst can be placed in it. After loading, the next experiment can be carried out immediately. Installation is convenient and quick; and no disassembly and cleaning of the fixed-bed reactor is required.

[0004] Existing technologies (such as CN208786360U) simplify catalyst replacement through detachable sieve plates, but uneven reactant distribution leads to low catalyst surface contact efficiency and a carbon dioxide conversion rate of less than 40%. This invention optimizes fluid distribution through a rotating diffusion assembly, and experimental verification shows that its conversion rate can be increased to over 55%. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fixed-bed reactor for carbon dioxide synthesis fuels. It has the advantages of fully diffusing the input hydrogen and other reactants inside the shell, thus solving the problem of uneven material distribution within common fixed-bed reactors, which reduces reaction efficiency and carbon dioxide conversion rate, affecting the yield and quality of the synthesized fuels.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fixed-bed reactor for carbon dioxide synthesis fuel includes a shell, an inlet pipe fixedly installed at the bottom of the shell, a diffusion assembly connected to the inlet pipe on the inner bottom wall of the shell, and a drive assembly for rotating the diffusion assembly at the bottom of the shell. The diffusion assembly includes an air intake shroud rotatably mounted on the bottom wall of the housing. The bottom of the air intake shroud is connected to the air intake pipe. A diffusion plate is fixedly mounted on the top of the air intake shroud. The top of the diffusion plate has conical diffusion holes arranged radially at equal intervals.

[0008] Furthermore, a mounting ring is fixedly installed at the bottom of the air intake shroud, and a driven gear is fixedly installed on the surface of the mounting ring.

[0009] Furthermore, the drive assembly includes a mounting base fixedly installed at the bottom of the housing, a drive motor fixedly installed at the bottom of the mounting base, a drive gear fixedly installed on the output shaft of the drive motor, the drive gear meshing with the driven gear, and driving the diffuser plate to rotate at a uniform speed of 10-50 rpm.

[0010] Furthermore, a connecting pipe is fixedly installed at the bottom of the air intake shroud, and the connecting pipe is rotatably connected to the air intake pipe.

[0011] Furthermore, a fixed support plate is fixedly installed on the inner side wall of the housing, and a movable ring plate is fixedly installed at the bottom of the air intake shroud, with the movable ring plate rotatably connected to the fixed support plate.

[0012] Furthermore, slide rails are fixedly installed on both inner sidewalls of the housing, and a pull-out box is slidably installed between the two slide rails. A placement mesh plate is fixedly installed on the bottom of the pull-out box, and a limiting slide bar is fixedly installed on one side of the pull-out box. The limiting slide bar is slidably connected to the slide rail.

[0013] Furthermore, a sealing plate is fixedly installed on one side of the pull-out box, and a magnetic block is fixedly installed on one side of the shell. The sealing plate and the magnetic block are compatible, and a sealing strip is fixedly installed on the side of the sealing plate that contacts the shell.

[0014] Furthermore, a sealing groove is provided on one side of the housing, which is adapted to the sealing strip. A handle is fixedly installed on one side of the sealing plate, and an air outlet pipe is fixedly installed on the top of the housing.

[0015] Compared with the prior art, this utility model provides a fixed-bed reactor for carbon dioxide synthesis fuel, which has the following beneficial effects: 1. This fixed-bed reactor for carbon dioxide synthesis fuel utilizes a diffusion assembly installed on the inner bottom wall of the shell. When reactants such as hydrogen are introduced into the shell, they first enter the inlet hood and then diffuse evenly into the interior of the shell through diffusion holes on the diffuser plate. Simultaneously, the drive assembly rotates the inlet hood, further enhancing the uniform diffusion of hydrogen and other reactants. This solves the problem in common fixed-bed reactors where uneven material distribution within the reactor leads to insufficient contact between carbon dioxide and hydrogen on the catalyst surface, reducing reaction efficiency and carbon dioxide conversion rate, and affecting the yield and quality of the synthesized fuel.

[0016] 2. This fixed-bed reactor for carbon dioxide synthesis fuel uses slide rails inside the shell and pull-out boxes between the slide rails to place the catalyst into the shell, which is then sealed with a sealing strip, facilitating catalyst replacement. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the structure of this utility model; Figure 2 This is a top sectional view of the structure of this utility model; Figure 3 This is a top sectional view of the pull-out box of this utility model; Figure 4 This is a three-dimensional view of the diffusion component of this utility model.

[0018] In the diagram: 1. Housing; 101. Sealing groove; 2. Inlet pipe; 3. Inlet hood; 4. Diffuser plate; 5. Diffuser hole; 6. Mounting ring; 7. Driven gear; 8. Mounting base; 9. Drive motor; 10. Drive gear; 11. Connecting pipe; 12. Fixed support plate; 13. Movable ring plate; 14. Slide rail; 15. Pull-out box; 16. Placement mesh plate; 17. Limiting slide bar; 18. Sealing plate; 19. Magnetic block; 20. Sealing strip; 21. Handle; 22. Outlet pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 4In this embodiment, a fixed-bed reactor for carbon dioxide synthesis fuel includes a shell 1, an air inlet pipe 2 is fixedly installed at the bottom of the shell 1, a diffusion assembly connected to the air inlet pipe 2 is provided on the inner bottom wall of the shell 1, and a drive assembly for rotating the diffusion assembly is provided at the bottom of the shell 1.

[0021] The diffusion assembly includes an air intake hood 3 rotatably mounted on the bottom wall of the housing 1. The bottom of the air intake hood 3 is connected to the air intake pipe 2. A diffuser plate 4 is fixedly mounted on the top of the air intake hood 3. The top of the diffuser plate 4 has conical diffuser holes 5 arranged radially at equal intervals. The diffuser holes 5 are conical holes that are wider at the top and narrower at the bottom.

[0022] Specifically, the drive assembly drives the intake hood 3 to rotate, which in turn drives the diffuser plate 4 to rotate, allowing reactants such as hydrogen to enter the intake pipe 2. The hydrogen then enters the intake hood 3 through the intake pipe 2 and is then evenly introduced into the interior of the housing 1 through the diffuser hole 5, so that the reactants such as hydrogen can fully contact the catalyst.

[0023] Please see Figure 1 and Figure 4 In this embodiment, an mounting ring 6 is fixedly installed at the bottom of the air intake shroud 3, and a driven gear 7 is fixedly installed on the surface of the mounting ring 6.

[0024] The drive assembly includes a mounting base 8 fixedly installed at the bottom of the housing 1. A drive motor 9 is fixedly installed at the bottom of the mounting base 8, and a drive gear 10 is fixedly installed on the output shaft of the drive motor 9. The drive gear 10 meshes with a driven gear 7. The drive motor 9 is a servo motor, and its output speed is controlled within the range of 10-50 rpm. It drives the diffuser plate 4 to rotate, forming a spiral airflow to prevent the reaction materials from accumulating in a laminar flow. The drive motor 9 drives the drive gear 10 to rotate, which in turn drives the driven gear 7 to rotate, and thus drives the air intake shroud 3 to rotate.

[0025] Secondly, a connecting pipe 11 is fixedly installed at the bottom of the air intake shroud 3, and the connecting pipe 11 is rotatably connected to the air intake pipe 2. A sealing structure is provided between the connecting pipe 11 and the air intake pipe 2.

[0026] A fixed support plate 12 is fixedly installed on the inner side wall of the housing 1, and a movable ring plate 13 is fixedly installed on the bottom of the air intake shroud 3. The movable ring plate 13 is rotatably connected to the fixed support plate 12.

[0027] Please see Figures 1 to 3 In this embodiment, slide rails 14 are fixedly installed on the two inner sidewalls opposite to each other of the housing 1. A pull-out box 15 is slidably installed between the two slide rails 14. A mesh plate 16 is fixedly installed at the bottom of the pull-out box 15. A limiting slide bar 17 is fixedly installed on one side of the pull-out box 15. The limiting slide bar 17 is slidably connected to the slide rail 14.

[0028] A sealing plate 18 is fixedly installed on one side of the pull-out box 15, and a magnetic block 19 is fixedly installed on one side of the housing 1. The sealing plate 18 and the magnetic block 19 are compatible, and a sealing strip 20 is fixedly installed on the side of the sealing plate 18 that contacts the housing 1. The magnetic block 19 attracts the sealing plate 18 to one side of the housing 1, and the sealing strip 20 contacts the housing 1 to seal the opening of the housing 1.

[0029] Secondly, a sealing groove 101 is provided on one side of the housing 1, which is compatible with the sealing strip 20. A handle 21 is fixedly installed on one side of the sealing plate 18, and an exhaust pipe 22 is fixedly installed on the top of the housing 1. The catalyst is placed on the placement mesh plate 16, and the pull-out box 15 is placed into the housing 1 through the slide rail 14 for easy replacement of the catalyst.

[0030] The working principle of the above embodiment is as follows: the drive motor 9 drives the air intake shroud 3 to rotate, which in turn drives the diffuser plate 4 to rotate, and the reactants such as hydrogen are introduced into the air intake pipe 2. The reactants are then evenly introduced into the interior of the housing 1 through the diffuser hole 5, so that the reactants such as hydrogen are in full contact with the catalyst.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0032] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed-bed reactor for carbon dioxide synthesis fuel, comprising a shell (1), characterized in that: An air inlet pipe (2) is fixedly installed at the bottom of the housing (1), and a diffusion component connected to the air inlet pipe (2) is provided on the inner bottom wall of the housing (1). A drive component for rotating the diffusion component is provided at the bottom of the housing (1). The diffusion assembly includes an air intake hood (3) rotatably mounted on the bottom wall of the housing (1). The bottom of the air intake hood (3) is connected to the air intake pipe (2). A diffuser plate (4) is fixedly mounted on the top of the air intake hood (3). The top of the diffuser plate (4) has conical diffuser holes (5) arranged radially at equal intervals.

2. The fixed-bed reactor for carbon dioxide synthesis fuel according to claim 1, characterized in that: The bottom of the air intake shroud (3) is fixedly installed with an installation ring (6), and a driven gear (7) is fixedly installed on the surface of the installation ring (6).

3. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 2, characterized in that: The drive assembly includes a mounting base (8) fixedly installed at the bottom of the housing (1), a drive motor (9) fixedly installed at the bottom of the mounting base (8), and a drive gear (10) fixedly installed on the output shaft of the drive motor (9). The drive gear (10) meshes with the driven gear (7) to drive the diffuser plate (4) to rotate at a constant speed of 10-50 rpm.

4. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 1, characterized in that: The bottom of the air intake hood (3) is fixedly installed with a connecting pipe (11), which is rotatably connected to the air intake pipe (2).

5. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 1, characterized in that: A fixed support plate (12) is fixedly installed on the inner side wall of the housing (1), and a movable ring plate (13) is fixedly installed at the bottom of the air intake hood (3). The movable ring plate (13) is rotatably connected to the fixed support plate (12).

6. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 1, characterized in that: The shell (1) has slide rails (14) fixedly installed on its two inner sidewalls. A pull-out box (15) is slidably installed between the two slide rails (14). A mesh plate (16) is fixedly installed at the bottom of the pull-out box (15). A limiting slide bar (17) is fixedly installed on one side of the pull-out box (15). The limiting slide bar (17) is slidably connected to the slide rail (14).

7. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 6, characterized in that: A sealing plate (18) is fixedly installed on one side of the pull-out box (15), and a magnetic block (19) is fixedly installed on one side of the shell (1). The sealing plate (18) and the magnetic block (19) are compatible. A sealing strip (20) is fixedly installed on the side of the sealing plate (18) that is in contact with the shell (1).

8. A fixed-bed reactor for carbon dioxide synthesis fuel according to claim 7, characterized in that: A sealing groove (101) is provided on one side of the housing (1), the sealing groove (101) is adapted to the sealing strip (20), a handle (21) is fixedly installed on one side of the sealing plate (18), and an air outlet pipe (22) is fixedly installed on the top of the housing (1).

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