Constant-temperature and constant-humidity spherical catalyst carrier preparation device and preparation method thereof

Abstract

The invention discloses a constant-temperature and constant-humidity spherical catalyst carrier preparation device and a preparation method thereof, and relates to the technical field of spherical catalyst carrier preparation.The constant-temperature and constant-humidity spherical catalyst carrier preparation device comprises a material mixing mechanism, a knife valve is installed at the lower end of the material mixing mechanism, and a single-head spiral blanking machine is installed below the knife valve; an internal mixer is installed below the single-head spiral blanking machine, a spiral extruder is installed at the lower end of the internal mixer, a blanking head is arranged below the end of the internal mixer and connected with a feeding port of the spiral extruder, and a grain cutting head is installed on the outer side of the end of the spiral extruder. According to the scheme, the problems that an existing spherical catalyst preparation device is dispersed in structure, a powder mixer, an internal mixer, an extruder and a rolling drum are independently arranged, the occupied area is large, time and labor are wasted in material transfer in the middle process, the production efficiency is affected, and loss in the material transfer process can be caused are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spherical catalyst carrier preparation, in particular to a constant-temperature and constant-humidity spherical catalyst carrier preparation device and a preparation method thereof. BACKGROUND

[0002] Catalysts can be divided into many shapes, such as spherical and strip-shaped, and therefore different carrier forming devices need to be used to complete the preparation of the catalysts.

[0003] However, the preparation of the existing spherical catalyst mainly involves powder mixing, internal mixing and extrusion and rolling, and some even involve rolling processes, and therefore multiple instruments are used.

[0004] However, the preparation equipment of the existing spherical catalyst is scattered, the powder mixer, the internal mixer, the extruder and the rolling drum are independently arranged, the land occupation is large, the transfer of the intermediate process materials wastes time and manpower, the production efficiency is affected, and the loss of the materials during the transfer process is caused. SUMMARY

[0005] The present application relates to the technical field of spherical catalyst carrier preparation, in particular to a constant-temperature and constant-humidity spherical catalyst carrier preparation device and a preparation method thereof.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a constant-temperature and constant-humidity spherical catalyst carrier preparation device, comprising a mixing mechanism, a knife valve is installed at the lower end of the mixing mechanism, a single-head screw feeder is installed below the knife valve, an internal mixer is installed below the single-head screw feeder, a screw extruder is installed at the lower end of the internal mixer, a discharge head is arranged below the end of the internal mixer, and the discharge head is connected with the feed inlet of the screw extruder, a pelletizing head is installed outside the end of the screw extruder, a double-head screw feeder is installed at the lower end of the pelletizing head, a rolling machine is installed below the double-head screw feeder, side supports are installed on both sides below the internal mixer, a loading platform is installed at the lower end of the side supports, the upper surface of the side supports is connected with the screw extruder, a support frame is installed below the loading platform, and a bottom plate is installed at the lower end of the support frame.

[0007] Preferably, the mixing mechanism comprises a mixing bin, a first asynchronous motor is installed at the middle position of the upper end of the mixing bin, the output end of the first asynchronous motor penetrates and extends to the inside of the mixing bin, and is installed with a stirring shaft through a shaft coupling, both sides of the stirring shaft are installed with stirring blades, one side of the upper end of the mixing bin is installed with a liquid spraying joint, one side of the liquid spraying joint is installed with a dust collecting joint, the other side of the upper end of the mixing bin is installed with a spiral feeding joint, and the dust collecting joint is connected with a bag dust collector.

[0008] Preferably, the mixing mechanism comprises a mixing bin, a first asynchronous motor is installed at the middle position of the upper end of the mixing bin, the output end of the first asynchronous motor penetrates and extends to the inside of the mixing bin, and is installed with a stirring shaft through a shaft coupling, both sides of the stirring shaft are installed with stirring blades, one side of the upper end of the mixing bin is installed with a liquid spraying joint, one side of the liquid spraying joint is installed with a dust collecting joint, the other side of the upper end of the mixing bin is installed with a spiral feeding joint, and the dust collecting joint is connected with a bag dust collector.

[0009] Preferably, the mixing mechanism comprises a mixing bin, a first asynchronous motor is installed at the middle position of the upper end of the mixing bin, the output end of the first asynchronous motor penetrates and extends to the inside of the mixing bin, and is installed with a stirring shaft through a shaft coupling, both sides of the stirring shaft are installed with stirring blades, one side of the upper end of the mixing bin is installed with a liquid spraying joint, one side of the liquid spraying joint is installed with a dust collecting joint, the other side of the upper end of the mixing bin is installed with a spiral feeding joint, and the dust collecting joint is connected with a bag dust collector.

[0010] Preferably, the mixing mechanism comprises a mixing bin, a first asynchronous motor is installed at the middle position of the upper end of the mixing bin, the output end of the first asynchronous motor penetrates and extends to the inside of the mixing bin, and is installed with a stirring shaft through a shaft coupling, both sides of the stirring shaft are installed with stirring blades, one side of the upper end of the mixing bin is installed with a liquid spraying joint, one side of the liquid spraying joint is installed with a dust collecting joint, the other side of the upper end of the mixing bin is installed with a spiral feeding joint, and the dust collecting joint is connected with a bag dust collector.

[0011] Preferably, the mixing mechanism comprises a mixing bin, a first asynchronous motor is installed at the middle position of the upper end of the mixing bin, the output end of the first asynchronous motor penetrates and extends to the inside of the mixing bin, and is installed with a stirring shaft through a shaft coupling, both sides of the stirring shaft are installed with stirring blades, one side of the upper end of the mixing bin is installed with a liquid spraying joint, one side of the liquid spraying joint is installed with a dust collecting joint, the other side of the upper end of the mixing bin is installed with a spiral feeding joint, and the dust collecting joint is connected with a bag dust collector.

[0012] Preferably, the pelletizing head includes a sealing cover, a side cover is installed on the side of the sealing cover, the side cover is provided with a pipe through hole for the water inlet and outlet pipes to pass through, a second asynchronous motor is installed at the rear end of the sealing cover, the second asynchronous motor is connected to the sealing cover through a motor bracket, the output end of the second asynchronous motor passes through and extends into the interior of the sealing cover, and a cutter disc is installed thereon, the cutter disc is attached to the outside of the die head.

[0013] Preferably, the rolling machine includes a disc-type rolling chamber, with a feed connector at the upper end of the disc-type rolling chamber, a discharge pipe on the outer wall of the disc-type rolling chamber, a valve installed at the connection between the discharge pipe and the disc-type rolling chamber, a connecting seat on the lower surface of the disc-type rolling chamber, and the connecting seat is integrally formed with the disc-type rolling chamber, a vibrating seat is installed at the lower end of the connecting seat, and a connected trapezoidal groove is provided around the vibrating seat and the connecting seat, with a spring plate installed on the inclined surface of the trapezoidal groove, a pulse electromagnet installed inside the vibrating seat, and a spray coil is provided at the upper end of the interior of the disc-type rolling chamber, with the water inlet of the spray coil extending to the upper end of the disc-type rolling chamber and equipped with a spray pipe connector.

[0014] Preferably, both the single-head spiral feeder and the double-head spiral feeder are equipped with spiral push rods inside, and the spiral push rods are driven by end motors. The feed inlet of the single-head spiral feeder is connected to the discharge port of the knife valve, and the discharge port of the single-head spiral feeder is connected to the feed inlet of the internal mixer. The feed inlet of the double-head spiral feeder is connected to the pelletizing head. The double-head spiral feeder has discharge ports at both ends below, and one of the discharge ports is connected to the feed connector of the rounding machine, and a flexible connecting section is provided at the connection.

[0015] Preferably, a method for preparing a constant temperature and humidity spherical catalyst support includes the following steps: Step 1: Add the raw materials to the feed hopper of the screw feeder according to the ratio. Under the action of the screw, the raw materials are transported to the mixing hopper. Start the first asynchronous motor at the top of the mixing hopper to drive the stirring shaft to rotate at high speed. After high-speed mixing for 60 seconds, supply the acid solution into the liquid spray nozzle. After the acid solution is sprayed, continue high-speed stirring for 60 seconds to ensure uniformity. The mixing temperature is 37±5℃. Step 2: After mixing, open the knife valve 8 to allow the material to fall into the single-head screw feeder. The screw pusher inside the single-head screw feeder further pushes the material to the end of the internal mixer. The temperature control mechanism on both sides of the outer wall of the internal mixer controls the temperature inside the chamber at 37℃±5℃. During the internal mixing process, the synchronous transmission mechanism runs, driving the two rotors inside the mixing chamber to rotate in opposite directions. The material is evenly dispersed by strong shear force in the gap between the rotor and the wall of the mixing chamber. At the same time, the Z-shaped convex ridge of the rotor pushes the material to move axially and fall into the screw extruder along the discharge port. During the discharge process, the cold trap cools the material and controls the discharge temperature at 26-27℃. Step 3: The screw extruder is equipped with a temperature control jacket to keep the extrusion temperature below 40℃. The synchronous transmission mechanism drives the rotor in the mixing chamber to rotate while simultaneously driving the screw of the extruder to rotate. Under the pushing action of the twin screws, the material is pushed to the cooling head to cool down and then extruded from the die head. The die head is ring-shaped with several through holes. The strip extruded material is cut into granules by the cutting action of the cutter disc in the pelletizing head and then falls into the twin screw feeder. Step 4: The double-headed screw feeder motor rotates in the forward direction, conveying the granules to the disc-type rounding chamber of the rounding machine. The pulse electromagnet in the vibrating seat of the rounding machine runs, and the vertical vibration generated is converted into torsional vibration through the inclined spring. This composite vibration causes the granules in the disc-type rounding chamber to move circumferentially along the material wall to achieve rounding. During the process, the spray pipe is turned on to ensure the uniformity of temperature and humidity during the rounding process. After completion, the discharge pipe valve is opened to release the material. If the rounding carrier is not needed, the double-headed screw feeder motor runs in the reverse direction, and the granules are released directly from the other material port.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) This invention integrates the four processes of mixing, internal mixing, extrusion and spherical rolling into one, and adopts a vertical stacked structure design, which greatly reduces the equipment footprint and significantly improves space utilization. It solves the problem that the existing spherical catalyst preparation equipment has a dispersed structure, with the powder mixer, internal mixer, extruder and spherical drum all set up independently, resulting in a large footprint.

[0017] (2) The materials of the present invention are automatically conveyed between each process by the screw feeder, reducing the number of intermediate material transfers by three times, reducing the risk of loss and breakage, avoiding material loss caused by multiple manual transfers in the traditional process and structural damage to the spherical carrier caused by handling, and improving the yield and production efficiency.

[0018] (3) The devices of the present invention are in a sealed connection state, which reduces the impact of changes in external temperature and humidity on operability. Furthermore, the mixing and extrusion stages use temperature control jackets and cooling heads for precise temperature control, and the rounding stage introduces spray coils to maintain humidity, effectively suppressing the impact of environmental fluctuations on material forming, reducing the breakage rate, and ensuring consistent physical properties of the carrier.

[0019] (4) The linkage between the mixing and extrusion mechanisms is achieved through synchronous belt drive, which improves energy efficiency while ensuring a compact processing rhythm. Key components such as the die head and pelletizing disc are designed to be detachable, making it easy to adjust the particle size specifications and adapt to the needs of multi-variety production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the synchronous transmission mechanism of the present invention; Figure 4 This is a schematic diagram of the internal structure of the pelletizing head of the present invention; Figure 5 This is a schematic diagram of the rolling machine structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the mixing mechanism of the present invention; In the diagram: 1. Mixing mechanism; 101. Mixing hopper; 102. Dust collection connector; 103. Liquid spray connector; 104. Screw feeding connector; 105. First asynchronous motor; 106. Coupling; 107. Agitator shaft; 108. Agitator blade; 2. Single-head screw feeder; 3. Internal mixer; 301. Internal mixer chamber; 302. Feeding head; 303. Temperature control mechanism; 304. Heat dissipation grille; 305. Cold trap; 306. Inlet manifold; 307. Outlet manifold; 308. First pulley; 4. Screw extruder; 401. Extruder housing; 402. Temperature control jacket; 403. Second pulley; 404. Cooling head; 405. Die head; 406. Fixing 5. Disc; 6. Pelletizer; 7. Sealing cover; 8. Second asynchronous motor; 9. Motor bracket; 10. Cutter disc; 11. Side cover; 12. Pipe through hole; 13. Double-headed spiral feeder; 14. Roller; 55. Disc-type rolling chamber; 6. Feed connector; 76. Discharge pipe; 77. Valve; 88. Vibrating seat; 99. Connecting seat; 10. Spring; 11. Spray pipe connector; 12. Knife valve; 13. Side bracket; 14. Platform; 15. Support frame; 16. Base plate; 17. Synchronous transmission mechanism; 18. Belt drive cover; 19. Synchronous belt; 10. Stepper motor; 11. Flexible connecting section. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Please see Figures 1-6An embodiment of the present invention provides a constant temperature and humidity spherical catalyst support preparation device, comprising a mixing mechanism 1, a knife valve 8 installed at the lower end of the mixing mechanism 1, a single-head screw feeder 2 installed below the knife valve 8, a mixer 3 installed below the single-head screw feeder 2, a screw extruder 4 installed at the lower end of the mixer 3, a discharge head 302 provided at the lower end of the mixer 3 and connected to the feed inlet of the screw extruder 4, a pelletizing head 5 installed on the outer side of the end of the screw extruder 4, a double-head screw feeder 6 installed at the lower end of the pelletizing head 5, a rounding machine 7 installed below the double-head screw feeder 6, side supports 9 installed on both sides below the mixer 3, a platform 10 installed at the lower end of the side supports 9, and the side supports 9 The upper surface is connected to the screw extruder 4. A support frame 11 is installed below the platform 10. A base plate 12 is installed at the lower end of the support frame 11. The mixing mechanism 1 includes a mixing bin 101. A first asynchronous motor 105 is installed at the middle position of the upper end of the mixing bin 101. The output end of the first asynchronous motor 105 passes through and extends into the interior of the mixing bin 101. A stirring shaft 107 is installed through a coupling 106. Stirring blades 108 are installed on both sides of the stirring shaft 107. A liquid spray connector 103 is installed on one side of the upper end of the mixing bin 101. A dust collection connector 102 is installed on one side of the liquid spray connector 103. A screw feeding connector 104 is installed on the other side of the upper end of the mixing bin 101. The dust collection connector 102 is connected to a bag dust collector. The mixing mechanism 1 is used to complete the premixing of raw materials. During the process, the bag dust collector is connected to the dust collection connector 102, which can collect and filter the dust generated during the mixing process.

[0023] Please see Figures 1-3The internal mixer 3 includes a mixing chamber 301 and a temperature control mechanism 303. Two temperature control mechanisms 303 are provided, installed on opposite sides of the mixing chamber 301. A heat dissipation grille 304 is provided on the outer side of each temperature control mechanism 303. Multiple cold traps 305 are installed on the upper surface of each temperature control mechanism 303. Heat exchange tubes are installed inside each temperature control mechanism 303. One end of the heat exchange tubes of the two temperature control mechanisms 303 is connected via a manifold inlet pipe 306, and the other end is connected via a manifold outlet pipe 307. The screw extruder 4 includes an extruder housing 401. A temperature control jacket 402 is installed on the outer wall of the extruder housing 401. Z-shaped screw rotors are installed on both sides inside the mixing chamber 301, facing each other and connected by gear meshing. Extruder screws are installed on both sides inside the extruder housing 401, facing each other and connected by gear meshing. The mixing chamber 301 and the extruder housing 401 are connected by a meshing transmission mechanism. A synchronous transmission mechanism 13 is installed at the ends of the mixing chamber 301 and the extruder housing 401. The synchronous transmission mechanism 13 includes a belt drive cover 131 and a stepper motor 133. A Z-shaped spiral rotor on one side of the mixing chamber 301 passes through and extends into the interior of the belt drive cover 131 and is equipped with a first pulley 308. An extruder screw on one side of the extruder housing 401 passes through and extends into the interior of the belt drive cover 131 and is equipped with a second pulley 403. The first pulley 308 is connected to the second pulley 403 by a synchronous belt 132. The stepper motor 133 is installed on the outer wall of the belt drive cover 131. The output end of the stepper motor 133 passes through and extends into the interior of the belt drive cover 131 and is connected to the second pulley 403. The Z-shaped spiral rotor of the mixing chamber 301 and the extruder screw are driven synchronously. After mixing, the extrusion process is directly continued, resulting in a compact processing rhythm and energy saving.

[0024] Please see Figure 4 A cooling head 404 is installed on the end face of the extruder housing 401. A water-cooling chamber is provided inside the cooling head 404. Water inlet and outlet pipes connected to the water-cooling chamber are provided on the outer wall of the cooling head 404. A die head 405 is installed on the end face of the cooling head 404. Multiple extrusion holes are arranged in a ring at the end of the die head 405. A fixing plate 406 is provided at the rear end of the die head 405. The fixing plate 406 is embedded in the interior of the cooling head 404 and is connected to the cooling head 404 by bolts. The die head 405 has a detachable structure, which makes it easy to adjust the die head 405 according to processing requirements to correspond to different processing particle sizes.

[0025] Please see Figure 4The pelletizing head 5 includes a sealing cover 501, a side cover 505 is installed on the side of the sealing cover 501, and a pipe through hole 506 for the water inlet and outlet pipes to pass through is provided on the side cover 505. A second asynchronous motor 502 is installed at the rear end of the sealing cover 501. The second asynchronous motor 502 is connected to the sealing cover 501 through a motor bracket 503. The output end of the second asynchronous motor 502 passes through and extends into the interior of the sealing cover 501, and a cutter disc 504 is installed thereon. The cutter disc 504 is attached to the outside of the die head 405.

[0026] Please see Figure 5 The rolling machine 7 includes a disc rolling chamber 701. The upper end of the disc rolling chamber 701 is provided with a feed connector 702. The outer wall of the disc rolling chamber 701 is provided with a discharge pipe 703. A valve 704 is installed at the connection between the discharge pipe 703 and the disc rolling chamber 701. The lower surface of the disc rolling chamber 701 is provided with a connecting seat 707, and the connecting seat 707 is integrally formed with the disc rolling chamber 701. A vibrating seat 705 is installed at the lower end of the connecting seat 707. The vibrating seat 705 and the connecting seat 707 are provided with interconnected trapezoidal grooves 706. A spring piece 708 is installed on the inclined surface of the trapezoidal groove 706. A pulse electromagnet is installed inside the vibrating seat 705. A spray coil is provided at the upper end of the disc rolling chamber 701. The water inlet of the spray coil extends to the upper end of the disc rolling chamber 701 and is provided with a spray pipe connector 709.

[0027] Furthermore, both the single-head spiral feeder 2 and the double-head spiral feeder 6 are equipped with spiral push rods inside, and the spiral push rods are driven by end motors. The feed inlet of the single-head spiral feeder 2 is connected to the discharge port of the knife valve 8, and the discharge port of the single-head spiral feeder 2 is connected to the feed inlet of the internal mixer 3. The feed inlet of the double-head spiral feeder 6 is connected to the pelletizing head 5. The double-head spiral feeder 6 has discharge ports at both ends below, and one discharge port is connected to the feed connector 702 of the rounding machine 7. A flexible connecting section 14 is provided at the connection point. The flexible connecting section 14 can prevent the vibration of the rounding machine 7 from affecting the double-head spiral feeder 6.

[0028] Please see Figures 1-6 A method for preparing a constant temperature and humidity spherical catalyst support includes the following steps: Step 1: Add appropriate amounts of boehmite, gibbsite, trihydrate, and binder (one or more of guar gum powder, methylcellulose, and carboxymethylcellulose) to the feeding hopper of the screw conveyor according to the ratio. Under the action of the screw conveyor, the raw materials are transported to the mixing hopper 101. Start the first asynchronous motor 105 at the top of the mixing hopper 101 to drive the stirring shaft 107 to rotate at high speed. After high-speed mixing for 60 seconds, supply the acid solution (organic acid or inorganic acid, one or more of citric acid, oxalic acid, and nitric acid) into the liquid spray nozzle 103. After the acid solution is sprayed, continue high-speed stirring for 60 seconds to ensure uniformity. The mixing temperature is 37±5℃. Step 2: After mixing, open the knife valve 8 to let the material fall into the single-head screw feeder 2. The screw pusher in the single-head screw feeder 2 further pushes the material to the end of the internal mixer 3. The temperature control mechanism 303 on both sides of the outer wall of the internal mixer 3 controls the temperature inside the chamber at 37℃±5℃. During the internal mixing process, the synchronous transmission mechanism 13 runs, driving the double rotors in the internal mixing chamber 301 to rotate in opposite directions. The material is evenly dispersed by strong shear force in the gap between the rotor and the wall of the internal mixing chamber. At the same time, the Z-shaped convex ridge of the rotor pushes the material to move axially and fall into the screw extruder 4 along the discharge port. During the discharge process, the cold trap 305 cools the material and controls the discharge temperature at 26-27℃. Step 3: The screw extruder 4 is equipped with a temperature control jacket 402 to control the extrusion temperature within 40℃. The synchronous transmission mechanism 13 drives the rotor in the mixing chamber 301 to rotate while simultaneously driving the extruder screw to rotate. Under the pushing action of the twin screws, the material is pushed to the cooling head 404 to cool down and then extruded from the die head 405. The die head 405 is provided with several through holes in a ring shape. The strip extruded material is cut into granules by the rotary cutting action of the cutter disc 504 in the pelletizing head 5 and then falls into the twin-head screw feeder 6. Step 4: The double-headed screw feeder 6 rotates in the forward direction, conveying the granules to the disc-type rounding chamber 701 of the rounding machine 7. The pulse electromagnet in the vibrating seat 705 of the rounding machine 7 operates, and the vertical vibration generated is converted into torsional vibration through the inclined spring 708. This composite vibration causes the granules in the disc-type rounding chamber 701 to move circumferentially along the material wall to achieve rounding. During the process, the spray pipe is turned on to ensure the uniformity of temperature and humidity during the rounding process. After completion, the discharge pipe 703 and valve 704 are opened to discharge the material. If the rounding carrier is not needed, the double-headed screw feeder 6 motor runs in the reverse direction, and the granules are discharged directly from another material port.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A constant temperature and humidity spherical catalyst support preparation apparatus, comprising a mixing mechanism (1), characterized in that: A knife valve (8) is installed at the lower end of the mixing mechanism (1). A single-head screw feeder (2) is installed below the knife valve (8). A mixer (3) is installed below the single-head screw feeder (2). A screw extruder (4) is installed at the lower end of the mixer (3). A discharge head (302) is provided below the end of the mixer (3), and the discharge head (302) is connected to the feed inlet of the screw extruder (4). A pelletizing head is installed on the outer side of the end of the screw extruder (4). (5) A double-headed spiral feeder (6) is installed at the lower end of the pelletizing head (5). A rounding machine (7) is installed below the double-headed spiral feeder (6). Side supports (9) are installed on both sides below the internal mixer (3). A platform (10) is installed at the lower end of the side support (9). The upper surface of the side support (9) is connected to the spiral extruder (4). A support frame (11) is installed below the platform (10). A base plate (12) is installed at the lower end of the support frame (11).

2. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 1, characterized in that: The mixing mechanism (1) includes a mixing hopper (101). A first asynchronous motor (105) is installed at the middle position of the upper end of the mixing hopper (101). The output end of the first asynchronous motor (105) extends through and into the interior of the mixing hopper (101). A stirring shaft (107) is installed through a coupling (106). Stirring blades (108) are installed on both sides of the stirring shaft (107). A liquid spray connector (103) is installed on one side of the upper end of the mixing hopper (101). A dust collection connector (102) is installed on one side of the liquid spray connector (103). A spiral feeding connector (104) is installed on the other side of the upper end of the mixing hopper (101). The dust collection connector (102) is connected to a bag dust collector.

3. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 2, characterized in that: The internal mixer (3) includes a mixing chamber (301) and a temperature control mechanism (303). There are two temperature control mechanisms (303), which are respectively installed on both sides of the mixing chamber (301). A heat dissipation grid (304) is provided on the outside of the temperature control mechanism (303). Multiple cold traps (305) are installed on the upper surface of the temperature control mechanism (303). A heat exchange tube is provided inside the temperature control mechanism (303). One end of the heat exchange tubes of the two temperature control mechanisms (303) is connected through a manifold inlet pipe (306), and the other end of the heat exchange tubes of the two temperature control mechanisms (303) is connected through a manifold outlet pipe (307). The screw extruder (4) includes an extruder housing (401). A temperature control jacket (402) is installed on the outer wall of the extruder housing (401).

4. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 3, characterized in that: Z-shaped spiral rotors are installed on both sides inside the mixing chamber (301). The Z-shaped spiral rotors on both sides are arranged opposite each other and connected by gear meshing. Extruder screws are installed on both sides inside the extruder housing (401). The extruder screws on both sides are arranged opposite each other and connected by gear meshing. Synchronous transmission mechanisms (13) are installed at the ends of the mixing chamber (301) and the extruder housing (401). The synchronous transmission mechanism (13) includes a belt drive cover (131) and a stepper motor (133). The Z-shaped spiral rotor on one side of the mixing chamber (301) passes through and extends... The extruder screw extends into the inside of the belt drive cover (131) and is equipped with a first pulley (308). The extruder screw on one side of the extruder housing (401) passes through and extends into the inside of the belt drive cover (131) and is equipped with a second pulley (403). The first pulley (308) is connected to the second pulley (403) via a synchronous belt (132). The stepper motor (133) is mounted on the outer wall of the belt drive cover (131). The output end of the stepper motor (133) passes through and extends into the inside of the belt drive cover (131) and is connected to the second pulley (403).

5. The apparatus for preparing a constant temperature and humidity spherical catalyst support according to claim 4, characterized in that: A cooling head (404) is installed on the end face of the extruder housing (401). A water-cooling cavity is provided inside the cooling head (404). A water inlet and outlet pipe connected to the water-cooling cavity is provided on the outer wall of the cooling head (404). A die head (405) is installed on the end face of the cooling head (404). A plurality of extrusion holes are arranged in a ring at the end of the die head (405).

6. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 5, characterized in that: The rear end of the mold head (405) is provided with a fixing plate (406), which is embedded inside the cooling head (404) and connected to the cooling head (404) by bolts.

7. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 6, characterized in that: The pelletizing head (5) includes a sealing cover (501), a side cover (505) is installed on the side of the sealing cover (501), and a pipe through hole (506) is provided on the side cover (505) for the water inlet and outlet pipes to pass through. A second asynchronous motor (502) is installed at the rear end of the sealing cover (501). The second asynchronous motor (502) is connected to the sealing cover (501) through a motor bracket (503). The output end of the second asynchronous motor (502) passes through and extends into the interior of the sealing cover (501), and a cutter disc (504) is installed thereon. The cutter disc (504) is attached to the outside of the die head (405).

8. The isothermal and humidity-controlled spherical catalyst support preparation apparatus according to claim 7, characterized in that: The rolling machine (7) includes a disc rolling chamber (701), with a feed connector (702) at the upper end of the disc rolling chamber (701). A discharge pipe (703) is provided on the outer wall of the disc rolling chamber (701). A valve (704) is installed at the connection between the discharge pipe (703) and the disc rolling chamber (701). A connecting seat (707) is provided on the lower surface of the disc rolling chamber (701), and the connecting seat (707) is integrally formed with the disc rolling chamber (701). A vibrating seat (705) is installed at the lower end of the seat (707). The vibrating seat (705) and the connecting seat (707) are provided with a connected trapezoidal groove (706). A spring piece (708) is installed on the inclined surface of the trapezoidal groove (706). A pulse electromagnet is installed inside the vibrating seat (705). A spray coil is provided at the upper end of the disc-shaped rolling chamber (701). The water inlet of the spray coil extends to the upper end of the disc-shaped rolling chamber (701) and is equipped with a spray pipe connector (709).

9. The apparatus for preparing a constant temperature and humidity spherical catalyst support according to claim 8, characterized in that: Both the single-head spiral feeder (2) and the double-head spiral feeder (6) are equipped with spiral push rods inside, and the spiral push rods are driven by end motors. The feed port of the single-head spiral feeder (2) is connected to the feed port of the knife valve (8). The feed port of the single-head spiral feeder (2) is connected to the feed port of the internal mixer (3). The feed port of the double-head spiral feeder (6) is connected to the pelletizing head (5). The double-head spiral feeder (6) has a feed port at both ends below. One end of the feed port is connected to the feed connector (702) of the rounding machine (7), and a flexible connecting section (14) is provided at the connection.

10. A method for preparing a constant temperature and humidity spherical catalyst support, based on the constant temperature and humidity spherical catalyst support preparation device according to claim 9, characterized in that, Includes the following steps: Step 1: Add the raw materials to the feed hopper of the screw feeder according to the proportion. Under the action of the screw feeder, the raw materials are transported to the mixing bin (101). Start the first asynchronous motor (105) at the top of the mixing bin (101) to drive the stirring shaft (107) to rotate at high speed. After high-speed mixing for 60 seconds, the acid solution is supplied to the liquid spray nozzle (103). After the acid solution is sprayed, continue high-speed stirring for 60 seconds to ensure uniformity. The mixing temperature is 37±5℃. Step 2: After mixing, open the knife valve (8) to let the material fall into the single-head screw feeder (2). The screw pusher in the single-head screw feeder (2) further pushes the material to the end of the internal mixer (3). The temperature control mechanism (303) on both sides of the outer wall of the internal mixer (3) controls the temperature inside the chamber at 37℃±5℃. During the internal mixing process, the synchronous transmission mechanism (13) runs, driving the double rotors in the internal mixing chamber (301) to rotate in opposite directions. The material is evenly dispersed by strong shear force in the gap between the rotor and the wall of the internal mixing chamber. At the same time, the Z-shaped convex ridge of the rotor pushes the material to move axially and fall into the screw extruder (4) along the discharge port. During the discharge process, the cold trap (305) cools the material and controls the discharge temperature at 26-27℃. Step 3: The screw extruder (4) is equipped with a temperature control jacket (402) to control the extrusion temperature within 40°C. The synchronous transmission mechanism (13) drives the rotor in the mixing chamber (301) to rotate while simultaneously driving the screw of the extruder to rotate. Under the pushing action of the twin screws, the material is pushed to the cooling head (404) to cool down and then extruded from the die head (405). The die head (405) is arranged in a ring with several through holes. The strip extruded material is cut into granules by the rotary cutting action of the cutter disc (504) in the pelletizing head (5) and then falls into the twin screw feeder (6). Step 4: The double-headed screw feeder (6) motor rotates in the forward direction, conveying the granules to the disc-type rolling chamber (701) of the rolling machine (7). The pulse electromagnet in the vibrating seat (705) of the rolling machine (7) runs, and the vertical vibration generated is converted into torsional vibration through the inclined spring (708). This composite vibration causes the granules in the disc-type rolling chamber (701) to move circumferentially along the material wall to achieve rounding. During the process, the spray pipe is opened to ensure the uniformity of temperature and humidity during the rolling process. After completion, the discharge pipe (703) valve (704) is opened to discharge the material. If the rolling carrier is not needed, the double-headed screw feeder (6) motor runs in the reverse direction and the granules are directly discharged from the other material port.

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