Methanol to hydrogen production: easily floating catalyst balls

Abstract

This invention discloses a methanol-to-hydrogen catalytic ball that floats easily, relating to the field of methanol reforming hydrogen production technology. The invention includes a catalytic chamber and a catalytic ball suspension assembly. A gas supply mechanism is connected to the bottom of the catalytic chamber, and a vibration mechanism is fixedly connected to the rear side of the catalytic chamber. The catalytic ball suspension assembly includes a mesh shell, the surface of which is slidably connected to the inner wall of the catalytic chamber. A catalytic ball body is housed within the inner cavity of the mesh shell, and a drive motor is fixedly connected to the top of the catalytic chamber via a mounting bracket. This invention utilizes the catalytic ball suspension assembly to continuously suspend and rotate the catalytic ball body inside the mesh shell under the impact of a high-speed spiral airflow generated by the gas supply mechanism. This solves the problem of dead zones caused by catalyst accumulation due to gravity in traditional fixed beds, allowing reactant gases to uniformly penetrate the suspended reaction layer composed of the catalytic ball body within the catalytic chamber, increasing the contact area between the gas and the active surface of the catalytic ball body, and thus increasing reaction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of methanol reforming hydrogen production technology, and in particular relates to easily floating catalyst balls for methanol hydrogen production. Background Technology

[0002] Methanol reforming is a process in which methanol and water vapor react chemically under the action of a catalyst to produce hydrogen and carbon dioxide. It is a technical route for hydrogen production through catalytic reforming. Its core is to convert the chemical energy in methanol into hydrogen energy by adjusting the reaction conditions and catalyst system. The product hydrogen can be purified to meet the hydrogen demand of fuel cells and other equipment.

[0003] Existing methanol reforming hydrogen production reactors typically employ a fixed-bed structure, filled with spherical or granular catalysts. The catalysts are packed into the reactor cavity in a stacked manner. Due to the gravity of the catalysts themselves and the static filling characteristics of the fixed bed, reactant gases tend to form uneven flow channels in the gaps between the stacked layers when flowing through the catalyst bed. This results in some areas having excessively high gas flow rates and insufficient contact surface area with the catalyst, while other areas have stagnant dead zones due to the tight stacking of the catalyst, making it difficult for reactant gases to effectively diffuse into the internal pores of the catalyst. This uneven fluid distribution problem caused by the mechanical stacking of the catalyst reduces the effective contact probability between the reactants and the active surface of the catalyst, affecting the overall reaction efficiency and hindering its use.

[0004] To address these issues, we provide easily floating catalyst balls for methanol-to-hydrogen production. Utility Model Content

[0005] The purpose of this invention is to provide a methanol-to-hydrogen catalytic ball that is easy to float. By combining the catalytic ball suspension component, the gas supply mechanism and the vibration mechanism, the problem of uneven gas flow distribution and reduced catalytic effect that easily occurs when the methanol-to-hydrogen catalytic ball is statically filled into the reactor cavity in the prior art during the catalytic process is solved.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This invention relates to a methanol-to-hydrogen easily floating catalyst ball, comprising a catalyst chamber and a catalyst ball suspension assembly. The bottom of the catalyst chamber is connected to a gas supply mechanism, and a vibration mechanism is fixedly connected to the rear side of the catalyst chamber. The catalyst ball suspension assembly includes a mesh shell, the surface of which is slidably connected to the inner wall of the catalyst chamber. The inner cavity of the mesh shell houses the catalyst ball body. The top of the catalyst chamber is fixedly connected to a drive motor via a mounting bracket. A rotary lifting mechanism is fixedly connected to the top of the output end of the drive motor. The bottom of the rotary lifting mechanism extends through the inner cavity of the mesh shell and is fixedly connected to a scraper. A return spring is fixedly connected to the top of the mesh shell.

[0008] The present invention is further configured such that the gas delivery mechanism includes a Venturi tube, the top of which is connected to the catalytic chamber, a spiral gas guide plate is fixedly connected to the top of the inner cavity of the Venturi tube, and a gas delivery pipe is connected to the bottom of the left side of the Venturi tube. The gas delivery pipe can deliver methanol and water vapor into the interior of the Venturi tube, thereby accelerating the reactant gas through the Venturi tube and allowing it to quickly enter the interior of the catalytic chamber. At the same time, the spiral gas guide plate causes the reactant gas to spiral upward, impacting the catalytic sphere body inside the mesh shell, causing the catalytic sphere body to be blown up and kept in a suspended state. Meanwhile, the catalytic sphere body rotates continuously, preventing multiple catalytic sphere bodies from accumulating and forming dead corners, and ensuring that the reactant gas and the surface of the catalytic sphere body are in full contact.

[0009] The present invention is further configured such that the vibration mechanism includes a vibration shell, the front side of which is fixedly connected to the catalyst chamber, a rotary motor is fixedly connected to the left side of the bottom of the inner cavity of the vibration shell, a rotating rod is movably connected to the bottom of the right side of the inner cavity of the catalyst chamber, cams are fixedly connected to both sides of the surface of the rotating rod, and pulleys are fixedly connected to the left side of the output end of the rotating rod and the rotary motor. The two pulleys are connected by belt drive. The vibration shell facilitates the installation and fixation of the rotary motor. The rotary motor can cooperate with the pulleys to control the rotation of the rotating rod and the cams. The rotation of the cams can continuously squeeze the mesh shell, causing it to vibrate up and down in cooperation with the return spring, thereby vibrating the catalyst ball body located at the bottom of the inner cavity of the mesh shell, preventing it from accumulating at the bottom of the inner cavity of the mesh shell, and improving its reaction effect.

[0010] The present invention is further configured such that a controller is fixedly connected to the right side of the bottom of the inner cavity of the vibration shell, and the surface of the rotating rod is movably connected to the catalytic chamber through a bearing. The controller can control the entire device, and the bearing is used to increase the stability of the rotating rod during rotation and prevent it from swaying.

[0011] The present invention is further configured such that the rotary lifting mechanism includes a telescopic tube, the top of which is fixedly connected to the output end of the drive motor, the inner cavity of which is provided with a movable plate, the bottom of which is fixedly connected to a rotating shaft, the bottom of which penetrates into the inner cavity of the mesh shell and is fixedly connected to a scraper. The telescopic tube can cooperate with the movable plate and the rotating shaft to control the rotation of the scraper, and at the same time, it can rotate normally during the adjustment of the up and down position, so as to continuously scrape the top of the inner cavity of the mesh shell and prevent the catalyst ball body from accumulating on the top of the inner cavity of the mesh shell.

[0012] The present invention is further configured such that slide bars are fixedly connected to both sides of the inner cavity of the telescopic tube, and slide grooves are provided on both sides of the movable plate to cooperate with the slide bars. The slide bars and slide grooves can limit the movable plate so that it can move up and down smoothly.

[0013] The present invention is further configured such that a speed-reducing filter plate is fixedly connected to the top of the mesh shell, and an exhaust pipe is connected to the right side of the top of the catalytic chamber. The speed-reducing filter plate can filter the reactant gas, reduce the gas flow rate, increase its residence time in the catalytic chamber, and improve the reaction effect. The exhaust pipe can discharge the gas after the reaction is completed from the catalytic chamber.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model utilizes a catalytic ball suspension assembly, in which the catalytic ball body inside the mesh shell is continuously suspended and rotated under the impact of a high-speed spiral airflow generated by the gas delivery mechanism. This solves the problem of dead zones caused by the accumulation of catalyst due to gravity in traditional fixed beds, allowing the reactant gas to uniformly penetrate the suspended reaction layer composed of the catalytic ball body in the catalytic chamber, increasing the contact area between the gas and the active surface of the catalytic ball body, and increasing the reaction efficiency.

[0016] 2. This utility model uses a vibration mechanism and a rotary lifting mechanism to periodically push the mesh shell with a cam, and with the reset action of the reset spring, the catalyst ball body deposited at the bottom of the mesh shell is vibrated up. At the same time, the scraper continuously scrapes off the catalyst ball body accumulated on the top of the mesh shell during the rotation and lifting, ensuring that the catalyst ball body is always in a dispersed and suspended state, thereby increasing the reaction uniformity and reaction efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A three-dimensional view of a easily floating catalyst ball for methanol-to-hydrogen production;

[0019] Figure 2 A side view of a methanol-to-hydrogen catalyst sphere that is prone to floating.

[0020] Figure 3 Cross-sectional view of the catalyst chamber and venturi tube in a easily floating catalyst ball for methanol-to-hydrogen production;

[0021] Figure 4 Cross-sectional view of the catalyst chamber and mesh shell in a easily floating catalyst sphere for methanol-to-hydrogen production;

[0022] Figure 5 Cross-sectional view of the vibrating shell inside a floating catalyst ball for methanol-to-hydrogen production.

[0023] In the attached diagram: 1. Catalytic chamber; 2. Gas delivery mechanism; 3. Vibration mechanism; 4. Catalytic ball suspension assembly; 41. Mesh shell; 42. Catalytic ball body; 43. Mounting bracket; 44. Drive motor; 45. Rotary lifting mechanism; 46. Scraper; 47. Return spring; 21. Venturi tube; 22. Spiral gas guide plate; 23. Gas delivery pipe; 31. Vibration shell; 32. Rotary motor; 33. Rotating rod; 34. Cam; 35. Pulley; 5. Controller; 6. Telescopic tube; 7. Speed ​​reduction filter plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5 This utility model is a methanol-to-hydrogen easily floating catalyst ball, including a catalyst chamber 1 and a catalyst ball suspension assembly 4. The bottom of the catalyst chamber 1 is connected to a gas supply mechanism 2, and a vibration mechanism 3 is fixedly connected to the rear side of the catalyst chamber 1. The catalyst ball suspension assembly 4 includes a mesh shell 41, the surface of which is slidably connected to the inner wall of the catalyst chamber 1. The inner cavity of the mesh shell 41 is provided with a catalyst ball body 42. The top of the catalyst chamber 1 is fixedly connected to a drive motor 44 via a mounting bracket 43. The top of the output end of the drive motor 44 is fixedly connected to a rotary lifting mechanism 45. The bottom of the rotary lifting mechanism 45 extends through the inner cavity of the mesh shell 41 and is fixedly connected to a scraper 46. The top of the mesh shell 41 is fixedly connected to a return spring 47.

[0027] Specifically: the gas delivery mechanism 2 can accelerate the delivery of methanol and water vapor into the catalytic chamber 1; the vibration mechanism 3 can control the mesh shell 41 and the catalytic ball body 42 stored inside it to vibrate up and down; the drive motor 44 can control the rotation lifting mechanism 45 and the scraper 46 to rotate; the rotation lifting mechanism 45 can adjust the up and down position of the scraper 46 while rotating; the reset spring 47 can reset the mesh shell 41 after it moves upward. By continuously vibrating the catalytic ball body 42 stored inside the mesh shell 41 and using high-speed airflow to suspend the catalytic ball body 42, a uniform gas flow channel can be formed. Methanol and water vapor can pass through the catalytic layer composed of catalytic ball body 42 evenly, avoiding the accumulation of catalytic ball body 42 and the formation of dead corners, thereby improving the reaction effect and reaction efficiency of the reactant gases.

[0028] Example 2

[0029] Please see Figure 1-5Based on Embodiment 1, the gas delivery mechanism 2 includes a Venturi tube 21, the top of which is connected to the catalytic chamber 1. A spiral gas guide plate 22 is fixedly connected to the top of the inner cavity of the Venturi tube 21, and a gas delivery pipe 23 is connected to the bottom left side of the Venturi tube 21. The vibration mechanism 3 includes a vibration shell 31, the front side of which is fixedly connected to the catalytic chamber 1. A rotary motor 32 is fixedly connected to the left side of the bottom of the inner cavity of the vibration shell 31. A rotating rod 33 is movably connected to the bottom right side of the inner cavity of the catalytic chamber 1. Cams 34 are fixedly connected to both sides of the surface of the rotating rod 33. Pulleys 35 are fixedly connected to the left side of the output ends of the rotating rod 33 and the rotary motor 32. A controller 5 is fixedly connected to the right side of the bottom of the inner cavity of the vibrating shell 31 via belt drive. The surface of the rotating rod 33 is movably connected to the catalytic chamber 1 via bearings. The rotating lifting mechanism 45 includes a telescopic tube 6. The top of the telescopic tube 6 is fixedly connected to the output end of the drive motor 44. A movable plate is provided in the inner cavity of the telescopic tube 6. A rotating shaft is fixedly connected to the bottom of the movable plate. The bottom of the rotating shaft passes through the inner cavity of the mesh shell 41 and is fixedly connected to the scraper 46. Sliding strips are fixedly connected to both sides of the inner cavity of the telescopic tube 6. Sliding grooves that cooperate with the sliding strips are opened on both sides of the movable plate. A speed reduction filter plate 7 is fixedly connected to the top of the mesh shell 41. An exhaust pipe is connected to the right side of the top of the catalytic chamber 1.

[0030] Specifically: the gas supply pipe 23 delivers methanol and water vapor to the venturi tube 21, accelerating the reactant gas and allowing it to quickly enter the catalytic chamber 1. Simultaneously, the spiral guide plate 22 causes the reactant gas to spiral upwards, impacting the catalytic spheres 42 inside the mesh shell 41. This causes the catalytic spheres 42 to be blown up and suspended, while the catalytic spheres 42 continuously rotate, preventing them from accumulating and creating dead zones. This ensures full contact between the reactant gas and the surface of the catalytic spheres 42. The vibrating shell 31 facilitates the installation and fixation of the rotary motor 32. The rotary motor 32, in conjunction with the pulley 35, controls the rotation of the rotating rod 33 and the cam 34. The rotation of the cam 34 continuously compresses the mesh shell 41, causing it to vibrate up and down in conjunction with the return spring 47, thus moving the reactant gas within the mesh shell 41. The bottom catalyst ball body 42 vibrates to prevent it from accumulating at the bottom of the inner cavity of the mesh shell 41, thus improving the reaction effect. The controller 5 can control the entire device. The bearing is used to increase the stability of the rotating rod 33 during rotation and prevent it from swaying. The telescopic tube 6 can cooperate with the movable plate and the rotating shaft to control the rotation of the scraper 46, and at the same time, it can rotate normally during the up and down position adjustment, so that it can continuously scrape the top of the inner cavity of the mesh shell 41, preventing the catalyst ball body 42 from accumulating at the top of the inner cavity of the mesh shell 41. The slide bar and slide groove can limit the movable plate, so that it can move up and down smoothly. The deceleration filter plate 7 can filter the reactant gas, reduce the gas flow rate, increase its residence time in the catalytic chamber 1, and improve the reaction effect. The exhaust pipe can discharge the gas after the reaction is completed from the catalytic chamber 1.

[0031] The working principle of this utility model is as follows: The gas supply pipe 23 inputs a mixture of methanol and water vapor into the Venturi tube 21. After the gas is accelerated by the Venturi tube 21, it forms a high-speed airflow. The spiral guide plate 22 causes the airflow to rise in a vortex shape and enter the catalyst chamber 1. The high-speed swirling flow impacts the catalyst ball body 42 inside the mesh shell 41, pushing it to overcome gravity, suspend it, and rotate it, preventing it from piling up. At the same time, the rotary motor 32 inside the vibrating shell 31 drives the rotating rod 33 to rotate through the pulley 35, causing the cam 34 to rotate and periodically squeeze the bottom of the mesh shell 41. The mesh shell 41 is squeezed and undergoes... After displacement, the catalytic ball body 42 is reset by the elastic force of the return spring 47. The two work together to form a continuous vibration, which vibrates the catalytic ball body 42 at the bottom of the mesh shell 41. Then, the drive motor 44 drives the rotating shaft and scraper 46 to rotate through the telescopic tube 6. The scraper 46 scrapes off the catalytic ball body 42 attached to the top of the mesh shell 41, keeping the catalytic ball body 42 in a suspended state. The reaction gas penetrates the catalytic layer composed of the suspended catalytic ball body 42 to complete the reforming reaction. The above operation increases the reaction uniformity and reaction efficiency, and avoids the problem of uneven gas flow distribution, which affects the catalytic effect.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A methanol-to-hydrogen easily floating catalyst ball, comprising a catalyst chamber (1) and a catalyst ball suspension assembly (4), characterized in that: The bottom of the catalytic chamber (1) is connected to a gas supply mechanism (2), and a vibration mechanism (3) is fixedly connected to the rear side of the catalytic chamber (1). The catalytic ball suspension assembly (4) includes a mesh shell (41), the surface of which is slidably connected to the inner wall of the catalytic chamber (1), the inner cavity of which is provided with a catalytic ball body (42), the top of which is fixedly connected to a drive motor (44) via a mounting bracket (43), the top of which is fixedly connected to a rotary lifting mechanism (45), the bottom of which penetrates into the inner cavity of the mesh shell (41) and is fixedly connected to a scraper (46), and the top of which is fixedly connected to a reset spring (47). The gas delivery mechanism (2) includes a venturi tube (21), the top of which is connected to the catalytic chamber (1), a spiral gas guide plate (22) is fixedly connected to the top of the inner cavity of the venturi tube (21), and a gas delivery pipe (23) is connected to the bottom of the left side of the venturi tube (21). The vibration mechanism (3) includes a vibration shell (31), the front side of which is fixedly connected to the catalyst chamber (1). A rotary motor (32) is fixedly connected to the left side of the bottom of the inner cavity of the vibration shell (31). A rotating rod (33) is movably connected to the bottom of the right side of the inner cavity of the catalyst chamber (1). Cams (34) are fixedly connected to both sides of the surface of the rotating rod (33). Pulleys (35) are fixedly connected to the left side of the output end of the rotating rod (33) and the rotary motor (32). The two pulleys (35) are connected by belt drive.

2. The easily floating catalyst ball for methanol-to-hydrogen production according to claim 1, characterized in that: A controller (5) is fixedly connected to the right side of the bottom of the inner cavity of the vibrating shell (31), and the surface of the rotating rod (33) is movably connected to the catalyst chamber (1) through a bearing.

3. The easily floating catalyst ball for methanol-to-hydrogen production according to claim 1, characterized in that: The rotary lifting mechanism (45) includes a telescopic tube (6), the top of which is fixedly connected to the output end of the drive motor (44), and the inner cavity of the telescopic tube (6) is provided with a movable plate. The bottom of the movable plate is fixedly connected to a rotating shaft, and the bottom of the rotating shaft passes through the inner cavity of the mesh shell (41) and is fixedly connected to the scraper (46).

4. The easily floating catalyst ball for methanol-to-hydrogen production according to claim 3, characterized in that: The telescopic tube (6) has slide bars fixedly connected to both sides of its inner cavity, and the movable plate has slide grooves on both sides that cooperate with the slide bars.

5. The easily floating catalyst ball for methanol-to-hydrogen production according to claim 1, characterized in that: The top of the mesh shell (41) is fixedly connected to a speed reduction filter plate (7), and the right side of the top of the catalytic chamber (1) is connected to an exhaust pipe.

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