Preparation device and preparation method of catalyst for methanol catalytic hydrogen production

Abstract

The invention discloses a preparation device and a preparation method of a catalyst for methanol catalytic hydrogen production, and relates to the technical field of catalyst preparation, the preparation device comprises a reaction kettle, a kettle cover is arranged at the top end of the reaction kettle, and an equipment frame is fixed at the top end of the kettle cover. According to the device, the first discharging pipe, the hose and the threaded rod are arranged, the discharging hopper is inserted into the inner side of the storage box, the closing cover is fixedly connected with the storage box, and the connecting pipe and the connecting sleeve on the closing cover are fixed, so that a copper salt solution, a zinc salt solution and an aluminum salt solution enter the discharging hopper through the connecting pipe and the connecting sleeve correspondingly; meanwhile, two threaded rods are screwed to rotate on the first discharging pipe, move towards the inner side during rotation, extrude the hose and adjust the flowing area in the hose, so that the falling speed of the metal salt solution in the hose is adjusted, and the copper salt solution, the zinc salt solution and the aluminum salt solution can be controlled to be fed in a parallel flow mode at the same flow speed; the mixing effect of the metal salt solution can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of catalyst preparation, and in particular to a catalyst preparation device and a preparation method for catalytic hydrogen production from methanol. Background Art

[0002] Methanol, as an organic liquid hydrogen carrier, can realize online in-situ hydrogen production. Methanol and water vapor pass through a catalyst under certain temperature and pressure conditions. Under the action of the catalyst, methanol cracking reaction and carbon monoxide conversion reaction occur to generate hydrogen and carbon dioxide. This is a multi-component, multi-reaction gas-solid catalytic reaction system. Methanol steam reforming to produce hydrogen (MSR) has a mild reaction temperature and a high hydrogen yield. It is an advantageous route for hydrogen production. The catalyst is the key to methanol reforming to produce hydrogen. The catalyst used for methanol catalytic hydrogen production is generally a copper-zinc-aluminum catalyst. The preparation steps of the copper-zinc-aluminum catalyst include raw material preparation, co-precipitation reaction, aging and drying, calcination, characterization and optimization, and the reactor is an important equipment in the catalyst preparation process.

[0003] In the preparation of the existing catalyst for catalytic hydrogen production from methanol, the feeding speed of the copper-zinc-aluminum salt solution cannot be adjusted when feeding, and the three metal salt solutions cannot be fed at a uniform speed to achieve parallel flow. In addition, the feeding structure needs to be cleaned in time after use to ensure that the solution does not stick to the wall, but the feeding structure needs to be disassembled, making cleaning inconvenient. Therefore, a catalyst preparation device and preparation method for catalytic hydrogen production from methanol are urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that, in the preparation of the existing catalyst for catalytic hydrogen production from methanol, the feeding speed of the copper-zinc-aluminum salt solution cannot be adjusted when feeding the solution, the three metal salt solutions cannot be fed at a uniform speed to achieve parallel flow, and the feeding structure needs to be cleaned in time after use to ensure that the solution does not stick to the wall, but the feeding structure needs to be disassembled, which makes cleaning inconvenient, the precipitant needs to be added manually at a fixed time and in a fixed quantity, the labor intensity is high, and during the co-precipitation reaction of the metal salt solution, the agitator contacts the metal salt solution, which easily makes the precipitate stick to the agitator, which is inconvenient to handle. A catalyst preparation device and a preparation method for catalytic hydrogen production from methanol are provided.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a catalyst preparation device and preparation method for catalytic hydrogen production from methanol, comprising a reactor, a reactor cover is arranged at the top of the reactor, an equipment frame is fixed to the top of the reactor cover, and a feeding structure is arranged on the top of the reactor cover, a feeding structure is arranged at one end of the feeding structure, a second motor is installed on the inner side of the equipment frame, a reducer is arranged at the output end of the second motor, and a stirring structure is installed at the bottom end of the reducer.

[0006] The feeding structure includes a storage box, a closing cover is engaged on the top of the storage box, and a first discharge pipe is connected to the bottom end of the storage box, a discharge hopper is engaged on the inner side of the storage box, a connecting sleeve is connected to the top end of the closing cover, and a limiting ring is fixed to the inner wall of the closing cover, a hose is connected to the bottom end of the discharge hopper, and threaded rods are engaged on both sides of the first discharge pipe.

[0007] The feeding structure includes a feeding box, a movable cover is movably provided at the top of the feeding box, and a support block is fixed to the inner wall of the feeding box, a first stopper is provided at the bottom of the inner wall of the feeding box, a vibration motor is installed on the inner side of the support block, a filter screen is attached to the top of the vibration motor, a second feeding pipe is fixed to the bottom end of the feeding box, a material taking barrel is movably engaged with the inner side of the second feeding pipe, a gear ring is fixed to the outer wall of the material taking barrel, a feeding groove is provided at the upper end of the material taking barrel, a discharging groove is provided at the lower end of the material taking barrel, and a gear is meshed on one side of the gear ring, a first motor is installed at the bottom end of the gear, and a second stopper is connected to the bottom end of the second feeding pipe.

[0008] The stirring structure includes a rotating rod, a movable rod is movably engaged with the inner side of the rotating rod, a steel rope is fixed to the top of the inner wall of the rotating rod, an equipment seat is fixed to the bottom end of the movable rod, a third motor is installed inside the equipment seat, a guide roller is installed on the inner wall of the equipment seat, a stirring paddle is fixed on the outer wall of the equipment seat, and a winding roller is provided at the output end of the third motor.

[0009] Preferably, the outer wall of the reactor is provided with a flange ring, and a heating cover is fixed to the outside of the reactor, the inner wall of the heating cover is installed with a heating wire, and the bottom end of the heating cover is connected to a discharge pipe, the outer wall of the heating cover is fixed with a supporting foot, one side of the reactor is connected to an insertion pipe, the reactor cover and the reactor are fixedly installed by a flange ring and bolts, the equipment frame is fixedly installed with the reactor cover, the second motor is fixedly installed with the equipment frame by a mounting groove, the discharge pipe passes through the inner side of the reactor, and the ends of the discharge pipe and the insertion pipe are installed with sealing covers.

[0010] Preferably, the number of the feeding structures is three, the first feeding pipe penetrates into the inner side of the reactor, the closing cover and the storage box are movably connected by threads, the limiting ring fits with the top of the feeding hopper, and the storage box and the reactor cover are fixedly installed by the first feeding pipe.

[0011] Preferably, the discharge hopper is snap-connected with the storage box, the hose is snap-connected with the first discharge pipe, the hose is made of rubber, there are two threaded rods, and the threaded rods are movably connected with the first discharge pipe through threads.

[0012] Preferably, the second feed pipe penetrates to the inner side of the reactor, the movable cover and the feeding box are movably connected by hinges, the feeding box and the reactor cover are fixedly installed by the second feed pipe, and the filter screen and the feeding box are fixed by a support block and a vibration motor.

[0013] Preferably, the material taking barrel is fitted and connected to the inner sides of the first block and the second block, the outer wall of the second discharge pipe is provided with a movable groove matching the gear, the first motor and the kettle cover are fixedly installed through the mounting groove, the gear ring is fixedly connected to the material taking barrel, and the feed trough and the discharge trough are through-connected.

[0014] Preferably, the rotating rod is fixedly installed with the reducer, the two ends of the steel rope are respectively fixedly connected with the rotating rod and the winding roller, the outer wall of the movable rod is provided with a limiting block, the inner wall of the rotating rod is provided with a limiting groove, and the movable rod and the rotating rod are movably connected through the limiting block and the limiting groove.

[0015] Preferably, the bottom end of the movable rod and the inner wall of the equipment seat are both provided with guide rollers matching the steel rope, and the third motor is fixedly mounted to the equipment seat by bolts.

[0016] Preferably, a method for preparing a catalyst for catalytic production of hydrogen from methanol comprises the following steps: Step 1: First, twist the two threaded rods to squeeze the hose and adjust the flow area of ​​the hose. After adjustment, add the copper salt solution, zinc salt solution and aluminum salt solution into the three storage boxes through the connecting sleeves, and flow out at a uniform speed through the lower hopper and the hose and enter the interior of the reactor; Step 2: Then add the precipitant into the inside of the feeding box. After the precipitant is vibrated and broken by the filter screen, it can fall down and quantitatively enter the inside of the material taking barrel through the feeding trough. After the material taking barrel rotates, the precipitant inside it can fall out through the discharging trough, enter the reactor, and mix with the metal salt solution; Step 3: The second motor controls the reducer and the stirring structure to rotate, stirring the copper salt solution, the zinc salt solution, the aluminum salt solution and the precipitant to accelerate their mixing. After sufficient mixing, the stirring structure moves upward and withdraws, and is extracted from the solution. At this time, the solution can undergo a coprecipitation reaction; Step 4: After the precipitation reaction is completed, the extraction tube is inserted into the interior of the reactor through the insertion tube to extract the upper liquid. After the extraction is completed, the sealing cover on the discharge pipe is opened to allow the precipitate to flow out through the discharge pipe. The discharged precipitate can be aged, dried, calcined, characterized and optimized in turn to prepare a copper-zinc-aluminum catalyst.

[0017] Compared with the prior art, the present invention has the following beneficial effects: First, the present invention sets a first feed pipe, a hose and a threaded rod, the feed hopper is inserted into the inner side of the storage box, the closing cover is fixedly connected to the storage box, and the connecting pipe and the connecting sleeve on the closing cover are fixed, so that the copper salt solution, the zinc salt solution and the aluminum salt solution can enter the interior of the feed hopper through the connecting pipe and the connecting sleeve respectively, and fall into the hose. At the same time, the two threaded rods are screwed on the first feed pipe and rotated, moving inwards during rotation to squeeze the hose and adjust the flow area in the hose, thereby adjusting the falling speed of the metal salt solution in the hose, and can control the copper salt solution, the zinc salt solution and the aluminum salt solution to be fed in parallel at the same flow rate, thereby improving the mixing effect of the metal salt solution.

[0018] Second, the present invention is provided with a feeding box, a filter screen, a second feeding pipe, a feeding barrel, a feeding trough and a discharging trough. At this time, the movable cover is opened, and then the precipitant is added into the feeding box. At this time, the vibration motor on the inner side of the support block is controlled to be powered on to transmit vibration to the filter screen, so that the precipitant can fall after being broken by the vibration of the filter screen, and quantitatively enter the inside of the discharging barrel through the feeding trough. After the inside of the discharging barrel is filled, the first motor is controlled to run. The internal technology of the first motor is the existing technology. After the first motor runs, it drives the gear at the output end to rotate. When the gear rotates, the gear ring and the discharging barrel are driven by the meshing of the tooth block. It rotates on the inner side of the second feeding pipe. After the material taking barrel rotates, the feed trough at its top rotates to fit with the inner side of the first stopper, and the discharge trough at its bottom rotates to separate from the second stopper, and the discharge trough is rotated to the outside to be exposed. At this time, the precipitant inside the material taking barrel can fall out through the discharge trough and enter the reactor to mix with the metal salt solution. The feeding is completed, and the first motor drives the material taking barrel to rotate again through the gears and gear rings, so that the feed trough is separated from the first stopper and exposed, and the discharge trough rotates to fit with the second stopper to achieve closure, then the material can be taken again, and this cycle can realize the timed and quantitative addition of the precipitant.

[0019] Third, the present invention sets a movable rod, a steel rope, a winding roller, a second motor and a rotating rod. At this time, the second motor is controlled to run. The internal technology of the second motor is the existing technology. After the second motor runs, it drives the rotating rod, the movable rod and the stirring paddle at the output end to rotate, and the solution and the precipitant are stirred. After sufficient mixing, the third motor is controlled to run. The internal technology of the third motor is the existing technology. The third motor drives the winding roller at the output end to rotate, and the winding roller drives the steel rope to move downward under the support of the guide roller. While moving downward, the movable rod is stressed and moves upward on the inner side of the rotating rod, thereby driving the equipment seat and the stirring paddle to move upward and be extracted from the solution, so that the solution can undergo a co-precipitation reaction, and the precipitate can be prevented from adhering to the stirring paddle, which is inconvenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the front cross-section structure of the present invention; Figure 3 It is a top view schematic diagram of the present invention; Figure 4 It is a schematic diagram of a material storage box of the present invention; Figure 5 It is a schematic diagram of the feeding structure of the present invention; Figure 6 For the present invention Figure 5 A is an enlarged schematic diagram; Figure 7 For the present invention Figure 5 A magnified schematic diagram of B; Figure 8 It is a schematic diagram of the feeding structure of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of middle C; Fig.10 is a schematic diagram of a second stopper of the present invention; Fig.11 is a schematic diagram of a gear ring of the present invention; Fig.12 is a schematic diagram of a first stopper of the present invention; Fig.13 It is a schematic diagram of the discharge chute of the present invention; Fig.14 It is a schematic diagram of the stirring structure of the present invention; Fig.15 A schematic diagram of a stirring paddle according to the present invention; Fig.16 For the present invention Fig.15 A magnified schematic diagram of D in the middle.

[0021] In the figure: 1, reactor; 2, reactor cover; 3, flange ring; 4, feeding structure; 401, storage box; 402, closing cover; 403, connecting sleeve; 404, limiting ring; 405, feeding hopper; 406, hose; 407, first feeding pipe; 408, threaded rod; 5, feeding structure; 501, feeding box; 502, movable cover; 503, support block; 504, vibration motor; 505, filter screen; 506, first stopper; 507, second feeding pipe; 508, taking barrel; 50 9. Feed chute; 510. First motor; 511. Gear; 512. Gear ring; 513. Discharge chute; 514. Second stopper; 6. Second motor; 7. Equipment frame; 8. Reducer; 9. Stirring structure; 901. Rotating rod; 902. Steel rope; 903. Movable rod; 904. Equipment seat; 905. Guide roller; 906. Winding roller; 907. Third motor; 908. Stirring paddle; 10. Heating cover; 11. Heating wire; 12. Discharge pipe; 13. Support foot; 14. Insert pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 7A catalyst preparation device and preparation method for catalytic hydrogen production from methanol, comprising a reactor 1, a reactor cover 2 is arranged at the top of the reactor 1, an equipment frame 7 is fixed to the top of the reactor cover 2, a feeding structure 4 is arranged at the top of the reactor cover 2, a feeding structure 5 is arranged at one end of the feeding structure 4, a second motor 6 is installed on the inner side of the equipment frame 7, a reducer 8 is arranged at the output end of the second motor 6, a stirring structure 9 is installed at the bottom end of the reducer 8, the feeding structure 4 comprises a storage box 401, a closing cover 402 is clamped at the top of the storage box 401, and a first discharge pipe 407 is connected to the bottom end of the storage box 401, a discharge hopper 405 is clamped on the inner side of the storage box 401, a connecting sleeve 403 is connected to the top of the closing cover 402, and a A limit ring 404, a hose 406 is connected to the bottom end of the lower hopper 405, threaded rods 408 are engaged on both sides of the first lower feed pipe 407, a flange ring 3 is provided on the outer wall of the reactor 1, and a heating cover 10 is fixed to the outer side of the reactor 1, a heating wire 11 is installed on the inner wall of the heating cover 10, and a discharge pipe 12 is connected to the bottom end of the heating cover 10, a support foot 13 is fixed to the outer wall of the heating cover 10, and a through-tube 14 is connected to one side of the reactor 1, the reactor cover 2 is fixedly installed with the reactor 1 through the flange ring 3 and bolts, the equipment frame 7 is fixedly installed with the reactor cover 2, the second motor 6 is fixedly installed with the equipment frame 7 through the mounting groove, the discharge pipe 12 penetrates to the inner side of the reactor 1, and the ends of the discharge pipe 12 and the through-tube 14 are both installed with sealing covers, and the number of feeding structures 4 There are three, the first feeding pipe 407 penetrates the inner side of the reactor 1, the closing cover 402 is movably connected to the storage box 401 through a thread, the limiting ring 404 is fitted with the top of the feeding hopper 405, the storage box 401 and the reactor cover 2 are fixedly installed through the first feeding pipe 407, the feeding hopper 405 is snap-connected to the storage box 401, the hose 406 is snap-connected to the first feeding pipe 407, the hose 406 is made of rubber, the number of threaded rods 408 is two, and the threaded rod 408 is movably connected to the first feeding pipe 407 through a thread, firstly, the feeding hopper 405 is inserted into the inner side of the storage box 401, and the hose 406 is inserted into the inner side of the first feeding pipe 407, at this time, the closing cover 402 is fixedly connected to the storage box 401 through a thread, and the closing cover 4 02 The limiting ring 404 on the inner wall fits with the top of the lower hopper 405, so that the lower hopper 405 is limited and fixed inside the storage box 401, and then the connecting pipe and the connecting sleeve 403 can be fixed, so that the copper salt solution, the zinc salt solution and the aluminum salt solution can enter the interior of the lower hopper 405 through the connecting pipe and the connecting sleeve 403 respectively, and the metal salt solution falls into the hose 406. At the same time, the two threaded rods 408 are screwed on the first lower feeding pipe 407 to rotate, and move inward when rotating to squeeze the hose 406, adjust the flow area of ​​the hose 406, and thus adjust the falling speed of the metal salt solution in the hose 406, so that the copper salt solution, the zinc salt solution and the aluminum salt solution can be controlled to flow and feed at the same flow rate, which can enhance the mixing effect of the metal salt solution.

[0024] See also Figure 8-Figure 13, a catalyst preparation device and preparation method for catalytic hydrogen production from methanol, the feeding structure 5 includes a feeding box 501, a movable cover 502 is movably provided at the top of the feeding box 501, and a support block 503 is fixed to the inner wall of the feeding box 501, a first stopper 506 is provided at the bottom of the inner wall of the feeding box 501, a vibration motor 504 is installed on the inner side of the support block 503, a filter screen 505 is attached to the top of the vibration motor 504, a second discharge pipe 507 is fixed to the bottom end of the feeding box 501, a material taking barrel 508 is movably engaged with the inner side of the second discharge pipe 507, a gear ring 512 is fixed to the outer wall of the material taking barrel 508, a feeding groove 509 is provided at the upper end of the material taking barrel 508, a discharge groove 513 is provided at the lower end of the material taking barrel 508, and a gear ring 512 is fixed to the outer wall of the material taking barrel 508, and a feeding groove 509 is provided at the upper end of the material taking barrel 508, and ... A gear 511 is meshed on one side of the ring 512, a first motor 510 is installed at the bottom end of the gear 511, a second stopper 514 is connected to the bottom end of the second feed tube 507, the second feed tube 507 penetrates to the inner side of the reactor 1, the movable cover 502 is movably connected to the feeding box 501 through a hinge, the feeding box 501 and the reactor cover 2 are fixedly installed through the second feed tube 507, the filter screen 505 and the feeding box 501 are fixed by the support block 503 and the vibration motor 504, the material taking barrel 508 is fitted and connected to the inner side of the first stopper 506 and the second stopper 514, the outer wall of the second feed tube 507 is provided with a movable groove matching the gear 511, the first motor 510 and the reactor cover 2 are fixedly installed through the installation groove, the gear ring 512 and the material taking barrel 508 are fixedly installed. The feed trough 509 is fixedly connected with the discharge trough 513. At this time, the movable cover 502 is opened, and then the precipitant is added into the inside of the feeding box 501. At this time, the vibration motor 504 inside the support block 503 is controlled to be powered on to transmit vibration to the filter screen 505, so that the precipitant can fall after being broken by the vibration of the filter screen 505, and quantitatively enter the inside of the material taking barrel 508 through the feed trough 509. After the inside of the material taking barrel 508 is filled, the first motor 510 is controlled to run. The internal technology of the first motor 510 is the existing technology. After the first motor 510 runs, it drives the gear 511 at the output end to rotate. When the gear 511 rotates, it drives the gear ring 512 and the material taking barrel 508 to the second discharge pipe 50 7 is rotated, after the material taking barrel 508 is rotated, the feed trough 509 at the top thereof is rotated to fit with the inner side of the first stopper 506, and the discharge trough 513 at the bottom thereof is rotated to separate from the second stopper 514, and the discharge trough 513 is rotated to the outside to be exposed. At this time, the precipitant inside the material taking barrel 508 can fall out through the discharge trough 513 and enter the reactor 1 to mix with the metal salt solution. Then the feeding is completed, and the first motor 510 drives the material taking barrel 508 to rotate again through the gear 511 and the gear ring 512, so that the feed trough 509 is separated from the first stopper 506 and exposed, and the discharge trough 513 is rotated to fit with the second stopper 514 to achieve closure, and then the material can be taken again. Such a cycle can realize the timed and quantitative addition of the precipitant.

[0025] See also Figure 14-16 , a catalyst preparation device and preparation method for catalytic hydrogen production from methanol, the stirring structure 9 includes a rotating rod 901, a movable rod 903 is movably engaged on the inner side of the rotating rod 901, and a steel rope 902 is fixed to the top of the inner wall of the rotating rod 901, and an equipment seat 904 is fixed to the bottom end of the movable rod 903, a third motor 907 is installed inside the equipment seat 904, and a guide roller 905 is installed on the inner wall of the equipment seat 904, and a stirring paddle 908 is fixed on the outer wall of the equipment seat 904, and a winding roller 906 is arranged at the output end of the third motor 907, the rotating rod 901 is fixedly installed with the reducer 8, and the two ends of the steel rope 902 are fixedly connected with the rotating rod 901 and the winding roller 906 respectively, a limiting block is arranged on the outer wall of the movable rod 903, and a limiting groove is arranged on the inner wall of the rotating rod 901, and the movable rod 903 is movably connected with the rotating rod 901 through the limiting block and the limiting groove, and the bottom end of the movable rod 903 and the inner wall of the equipment seat 904 are both provided with A guide roller 905 matching the steel rope 902 is provided, and the third motor 907 is fixedly installed with the equipment base 904 by bolts. At this time, the second motor 6 is controlled to run. The internal technology of the second motor 6 is the existing technology. After the second motor 6 runs, it drives the output end rotating rod 901, the movable rod 903 and the stirring paddle 908 to rotate, and the solution and the precipitant are stirred. After sufficient mixing, the third motor 907 is controlled to run. The internal technology of the third motor 907 is the existing technology. The third motor 907 drives the winding roller 906 at the output end to rotate, and the winding roller 906 drives the steel rope 902 to move downward under the support of the guide roller 905. While moving downward, the movable rod 903 is subjected to force and moves upward on the inner side of the rotating rod 901 through the limit block and the limit groove, thereby driving the equipment base 904 and the stirring paddle 908 to move upward and be extracted from the solution, so that the solution can undergo a co-precipitation reaction, and the precipitate can be prevented from adhering to the stirring paddle 908, which is inconvenient to clean.

[0026] A method for preparing a catalyst for catalytic production of hydrogen from methanol comprises the following steps: Step 1: First, the two threaded rods 408 are screwed to squeeze the hose 406, and the flow area of ​​the hose 406 is adjusted. After adjustment, the copper salt solution, the zinc salt solution and the aluminum salt solution are respectively added into the three storage boxes 401 through the connecting sleeve 403, and flow out at a uniform speed through the lower hopper 405 and the hose 406 and enter the interior of the reactor 1; Step 2: Then add the precipitant into the inside of the feeding box 501, and the precipitant can fall after being vibrated and broken by the filter screen 505, and quantitatively enter the inside of the material taking barrel 508 through the feeding slot 509. After the material taking barrel 508 rotates, the precipitant inside it can fall and flow out through the discharging slot 513, enter the reactor 1, and mix with the metal salt solution; Step 3: The second motor 6 controls the reducer 8 and the stirring structure 9 to rotate, stirring the copper salt solution, the zinc salt solution, the aluminum salt solution and the precipitant to accelerate their mixing. After sufficient mixing, the stirring structure 9 moves upward and withdraws, and is extracted from the solution. At this time, the solution can undergo a coprecipitation reaction; Step 4: After the precipitation reaction is completed, the extraction tube is inserted into the interior of the reactor 1 through the insertion tube 14 to extract the upper liquid. After the extraction is completed, the sealing cover on the discharge pipe 12 is opened to allow the precipitate to flow out through the discharge pipe 12. The discharged precipitate can be aged, dried, calcined, characterized and optimized in turn to prepare a copper-zinc-aluminum catalyst.

[0027] Working principle: When the present invention is used, first insert the lower hopper 405 into the inner side of the storage box 401, and insert the hose 406 into the inner side of the first lower feeding tube 407. At this time, the closing cover 402 is fixedly connected to the storage box 401 through a thread, and the limiting ring 404 on the inner wall of the closing cover 402 fits with the top of the lower hopper 405, so that the lower hopper 405 is limited and fixed inside the storage box 401. Then the connecting pipe and the connecting sleeve 403 can be fixed, so that the copper salt solution, the zinc salt solution and the aluminum salt solution can enter the lower hopper 405 through the connecting pipe and the connecting sleeve 403 respectively, and the metal salt solution falls into the hose 406. At the same time, the two threaded rods 408 are screwed on the first lower feeding tube 407 to rotate, and move inward when rotating. The hose 406 is squeezed to adjust the flow area inside the hose 406, thereby adjusting the falling speed and flow rate of the metal salt solution in the hose 406, and the copper salt solution, the zinc salt solution and the aluminum salt solution can be controlled to be fed at the same flow rate. At this time, the movable cover 502 is opened, and then the precipitant is added to the inside of the feeding box 501, and the precipitant falls on the filter 505. At this time, the vibration motor 504 on the inner side of the support block 503 is controlled to be powered on to transmit vibration to the filter 505, so that the precipitant can fall after being broken by the vibration of the filter 505, and enter the inside of the material taking barrel 508 in a quantitative manner through the feeding trough 509. After the inside of the material taking barrel 508 is filled, the first motor 510 is controlled to run. The internal technology of the first motor 510 is the existing technology. After the first motor 510 is running, it drives the gear 511 at the output end to rotate. When the gear 511 rotates, the gear ring 512 and the material barrel 508 are driven to rotate on the inner side of the second discharge tube 507 through the meshing of the gear blocks. After the material barrel 508 rotates, the feed trough 509 at its top is rotated to fit the inner side of the first stopper 506, and the discharge trough 513 at its bottom is rotated to separate from the second stopper 514, and the discharge trough 513 is rotated to the outside to be exposed. At this time, the precipitant inside the material barrel 508 can fall out through the discharge trough 513 and enter the reactor 1 to mix with the metal salt solution, and the feeding is completed. At this time, the second motor 6 is controlled to run. The internal technology of the second motor 6 is the existing technology. After the second motor 6 runs, it drives the output end rotating rod 901, The movable rod 903 and the stirring paddle 908 rotate to stir the solution and the precipitant. After they are fully mixed, the third motor 907 is controlled to operate. The internal technology of the third motor 907 is the existing technology. The third motor 907 drives the winding roller 906 at the output end to rotate, and the winding roller 906 drives the steel rope 902 to move down and reel under the support of the guide roller 905. While moving down, the movable rod 903 is subjected to force and moves up on the inner side of the rotating rod 901, thereby driving the equipment seat 904 and the stirring paddle 908 to move up and extract from the solution. At this time, the electric heating wire 11 inside the heating cover 10 is controlled to operate to heat the liquid inside the heating cover 10, so that the high-temperature liquid heats the solution inside the reactor 1 to promote the co-precipitation reaction. After the precipitation reaction is completed,The extraction pipe is inserted into the reactor 1 through the insertion pipe 14 to extract the upper liquid. After the extraction is completed, the sealing cover on the discharge pipe 12 is opened to allow the precipitate to flow out through the discharge pipe 12. The precipitate that flows out can be aged, dried, calcined, characterized and optimized in sequence to prepare the copper-zinc-aluminum catalyst.

[0028] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A catalyst preparation device for catalytic production of hydrogen from methanol, comprising a reaction kettle (1), characterized in that: The top of the reaction kettle (1) is provided with a kettle cover (2), the top of which is fixed with an equipment frame (7), and the top of the kettle cover (2) is provided with a feeding structure (4), one end of which is provided with a feeding structure (5), a second motor (6) is installed on the inner side of the equipment frame (7), a reducer (8) is provided at the output end of the second motor (6), and a stirring structure (9) is installed at the bottom end of the reducer (8); The feeding structure (4) comprises a material storage box (401), a closing cover (402) is engaged at the top of the material storage box (401), and a first material discharge pipe (407) is connected to the bottom end of the material storage box (401), a material discharge hopper (405) is engaged on the inner side of the material storage box (401), a connecting sleeve (403) is connected to the top end of the closing cover (402), and a limiting ring (404) is fixed to the inner wall of the closing cover (402), a hose (406) is connected to the bottom end of the material discharge hopper (405), and threaded rods (408) are engaged on both sides of the first material discharge pipe (407); The feeding structure (5) comprises a feeding box (501), a movable cover (502) is movably provided at the top of the feeding box (501), a support block (503) is fixed to the inner wall of the feeding box (501), a first stopper (506) is provided at the bottom of the inner wall of the feeding box (501), a vibration motor (504) is installed on the inner side of the support block (503), a filter screen (505) is attached to the top of the vibration motor (504), and a second discharge pipe (507) is fixed to the bottom of the feeding box (501). The inner side of the second material discharge tube (507) is movably engaged with a material taking barrel (508), the outer wall of the material taking barrel (508) is fixed with a gear ring (512), the upper end of the material taking barrel (508) is provided with a material feeding groove (509), the lower end of the material taking barrel (508) is provided with a material discharging groove (513), and one side of the gear ring (512) is meshed with a gear (511), the bottom end of the gear (511) is installed with a first motor (510), and the bottom end of the second material discharge tube (507) is connected with a second stopper (514); The stirring structure (9) comprises a rotating rod (901), a movable rod (903) movably engaged on the inner side of the rotating rod (901), a steel rope (902) fixed to the top end of the inner wall of the rotating rod (901), an equipment seat (904) fixed to the bottom end of the movable rod (903), a third motor (907) installed inside the equipment seat (904), a guide roller (905) installed on the inner wall of the equipment seat (904), a stirring paddle (908) fixed to the outer wall of the equipment seat (904), and a winding roller (906) provided at the output end of the third motor (907).

2. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The outer wall of the reactor (1) is provided with a flange ring (3), and a heating cover (10) is fixed to the outer side of the reactor (1), the inner wall of the heating cover (10) is installed with an electric heating wire (11), and the bottom end of the heating cover (10) is connected to a discharge pipe (12), the outer wall of the heating cover (10) is fixed with a supporting foot (13), one side of the reactor (1) is connected to an insertion pipe (14), the reactor cover (2) and the reactor (1) are fixedly mounted by means of a flange ring (3) and bolts, the equipment frame (7) and the reactor cover (2) are fixedly mounted, the second motor (6) and the equipment frame (7) are fixedly mounted by means of a mounting groove, the discharge pipe (12) penetrates to the inner side of the reactor (1), and sealing covers are installed at the ends of the discharge pipe (12) and the insertion pipe (14).

3. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The number of the feeding structures (4) is three, the first feeding tube (407) penetrates the inner side of the reaction kettle (1), the closing cover (402) and the material storage box (401) are movably connected via threads, the limiting ring (404) fits with the top of the feeding hopper (405), and the material storage box (401) and the kettle cover (2) are fixedly mounted via the first feeding tube (407).

4. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The material discharge hopper (405) is snap-connected with the material storage box (401), the hose (406) is snap-connected with the first material discharge pipe (407), the hose (406) is made of rubber, there are two threaded rods (408), and the threaded rods (408) are movably connected to the first material discharge pipe (407) via threads.

5. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The second feed pipe (507) penetrates the inner side of the reaction kettle (1); the movable cover (502) and the feeding box (501) are movably connected via hinges; the feeding box (501) and the kettle cover (2) are fixedly mounted via the second feed pipe (507); and the filter screen (505) and the feeding box (501) are fixedly engaged via a support block (503) and a vibration motor (504).

6. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The material taking barrel (508) is closely connected to the inner sides of the first stopper (506) and the second stopper (514); the outer wall of the second material discharge pipe (507) is provided with a movable groove matching the gear (511); the first motor (510) and the kettle cover (2) are fixedly installed through the installation groove; the gear ring (512) is fixedly connected to the material taking barrel (508); and the feed trough (509) and the discharge trough (513) are through-connected.

7. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The rotating rod (901) is fixedly mounted on the reducer (8); the two ends of the steel rope (902) are respectively fixedly connected to the rotating rod (901) and the winding roller (906); a limit block is provided on the outer wall of the movable rod (903); a limit groove is provided on the inner wall of the rotating rod (901); and the movable rod (903) and the rotating rod (901) are movably connected via the limit block and the limit groove.

8. The catalyst preparation device for catalytic production of hydrogen from methanol according to claim 1, characterized in that: The bottom end of the movable rod (903) and the inner wall of the equipment seat (904) are both provided with guide rollers (905) matching the steel rope (902), and the third motor (907) and the equipment seat (904) are fixedly mounted by bolts.

9. A method for preparing a catalyst for catalytic production of hydrogen from methanol, applicable to a catalyst preparation device for catalytic production of hydrogen from methanol according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: First, the two threaded rods (408) are screwed to squeeze the hose (406) and the flow area of ​​the hose (406) is adjusted. After adjustment, the copper salt solution, the zinc salt solution and the aluminum salt solution are respectively added into the three storage boxes (401) through the connecting sleeve (403), and flow out at a uniform speed through the lower hopper (405) and the hose (406) and enter the interior of the reactor (1); Step 2: Then, a precipitant is added into the inside of the feeding box (501). After the precipitant is vibrated and crushed by the filter screen (505), it can fall down and quantitatively enter the inside of the material taking barrel (508) through the feeding slot (509). After the material taking barrel (508) rotates, the precipitant inside it can fall down and flow out through the discharging slot (513), enter the reaction kettle (1), and mix with the metal salt solution; Step 3: The second motor (6) controls the reducer (8) and the stirring structure (9) to rotate, stirring the copper salt solution, the zinc salt solution, the aluminum salt solution and the precipitant to accelerate their mixing. After sufficient mixing, the stirring structure (9) moves upward and retracts, and is extracted from the solution. At this time, the solution can undergo a co-precipitation reaction; Step 4: After the precipitation reaction is completed, the extraction tube is inserted into the interior of the reactor (1) through the insertion tube (14) to extract the upper liquid. After the extraction is completed, the sealing cover on the discharge tube (12) is opened to allow the precipitate to flow out through the discharge tube (12). The discharged precipitate can be aged, dried, calcined, characterized and optimized in sequence to prepare a copper-zinc-aluminum catalyst.

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