An apparatus for preparing a vanadium catalyst with improved activity

Abstract

The utility model proposes a kind of preparation device of vanadium catalyst with improved activity, it is related to catalyst preparation technical field, including load base plate, the load base plate signal connection has PLC control unit, the PLC control unit signal connection has the activity load tank of storage detection pretreatment carrier, the bottom of the activity load tank is fixedly installed with the rotary material distribution frame of carrier export, the utility model has the advantages of: the load base plate that real-time monitoring is carried out to additive material is set in the stirring box bottom of kneading stirring, according to the detection feedback of load base plate to material, control activity load tank adds the corresponding number of carrier to the inside of stirring box, and by the intercoordination of rotary material distribution frame and discharge pipe, carrier can be introduced into the inside of stirring box in the form of circular ring or thread, increase the area and uniformity of carrier distribution, improve the uniformity of material and carrier mixing, it is favorable to improve the activity of vanadium catalyst, improve the convenience of carrier distribution.

Description

Technical Field

[0001] This utility model relates to the field of catalyst preparation technology, and in particular to a device for preparing vanadium catalysts with enhanced activity. Background Technology

[0002] In the chemical industry, vanadium catalysts are widely used in many important chemical reaction processes, such as sulfuric acid production and the oxidation of organic compounds. Their activity directly affects reaction efficiency, product yield, and production costs. With the development of the chemical industry, the requirements for the activity of vanadium catalysts are becoming increasingly stringent.

[0003] However, existing vanadium catalyst preparation devices typically add materials and supports directly during the preparation process, which causes the supports to aggregate and become difficult to distribute evenly. This hinders the uniform mixing of the supports and materials and affects the activity of the vanadium catalyst. Utility Model Content

[0004] Therefore, the purpose of this invention is to propose a device for preparing vanadium catalysts with enhanced activity, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides an apparatus for preparing an enhanced vanadium catalyst, comprising a stirring tank for introducing neutralized vanadium material, a motor-driven spiral stirring paddle fixedly installed inside the stirring tank, a load base plate for monitoring the introduced material fixedly installed inside the stirring tank, a PLC control unit for information processing and automated control connected to the load base plate, an active load tank for storing and detecting pretreated carriers fixedly installed at the bottom of the active load tank, a rotating material distribution frame for discharging carriers fixedly installed at the bottom of the active load tank, a discharge pipe for telescopic adjustment fixedly installed inside the rotating material distribution frame, a baffle for sealing and protecting one end of the discharge pipe rotatably connected to it, and a barrier plate for isolating the carriers provided above the rotating material distribution frame.

[0006] Preferably, the bottom of the mixing tank is provided with a fixed leg to support it, and the spiral mixing paddle includes a drive motor connected to the PLC control unit and a threaded paddle for stirring. The drive motor is fixedly installed at the bottom of the mixing tank, and the output end of the drive motor is fixedly installed with a threaded paddle that rotates inside the mixing tank.

[0007] The above technical solution is adopted as follows: a fixed leg is welded to the bottom of the mixing tank (made of stainless steel) (with rubber shock-absorbing pads at the bottom). The drive motor of the spiral agitator (a three-phase asynchronous motor connected to the PLC control unit) is fixed to the bottom of the tank. The spiral agitator (made of stainless steel) is fixed to the motor output end and can rotate inside the tank. The stainless steel mixing tank is resistant to acid and alkali corrosion, has a large capacity suitable for batch preparation, and the inner wall is polished to reduce material adhesion. The fixed leg supports the tank body, and the rubber shock-absorbing pads dampen the stirring vibration and prevent the tank body from shifting. The drive motor drives the spiral agitator to rotate at high speed, and the spiral structure generates axial thrust to achieve strong mixing of materials and carriers. The PLC controls the speed to adapt to different viscosity systems to ensure thorough mixing.

[0008] Preferably, in any of the above embodiments, the load base plate includes a pressure sensor connected to the PLC control unit and a load plate for carrying materials. The pressure sensor is fixedly installed at the bottom of the mixing tank, and the detection end of the pressure sensor is fixedly installed with the load plate located inside the mixing tank.

[0009] The above technical solution is adopted: the pressure sensor (piezoelectric type, connected to the PLC control unit signal) of the load base plate is fixed at the bottom of the mixing tank, and the load plate (stainless steel material) is fixed at the sensor detection end and laid flat at the bottom of the mixing tank. The pressure sensor monitors the weight of the material in the mixing tank in real time, providing data basis for the amount of carrier added. The stainless steel load plate is corrosion resistant, and the smooth surface reduces material residue. At the same time, it transmits pressure evenly. The weight data is fed back to the PLC in real time, realizing precise control of the amount of carrier added and avoiding excessive or insufficient carrier from affecting the catalyst activity.

[0010] Preferably, in any of the above embodiments, the bottom of the active loading tank is provided with a support frame that is fixedly installed with the mixing tank, the top of the active loading tank is fixedly installed with a top cover with a built-in pressure pump, and the rotating material feeding frame includes a motor pulley assembly and a material feeding tube for guiding the carrier, which are connected to the PLC control unit. The motor pulley assembly is fixedly installed inside the support frame, and the output end of the motor pulley assembly is fixedly installed with a material feeding tube that rotates inside the support frame and the active loading tank.

[0011] The above technical solution is as follows: The bottom of the active loading tank (made of stainless steel) is fixed to the mixing tank by a support frame, and the top of the tank is equipped with a top cover with a built-in pressure pump (connected to the PLC signal). The motor pulley assembly (servo motor) of the rotating material distribution frame is fixed inside the support frame, and the material distribution tube (made of stainless steel) is fixed to the output end of the motor pulley assembly and can rotate inside the mixing tank. The active loading tank stores the pretreated carrier, the pressure pump provides the power to transport the carrier and ensures stable feeding of the carrier, the support frame provides a stable installation benchmark, so that the material distribution tube is accurately located in the center of the mixing tank, and the motor pulley assembly drives the material distribution tube to rotate at a uniform speed. Together with the discharge hole, it realizes the ring-shaped distribution of the carrier, increases the carrier distribution area, and the rotating material distribution avoids carrier aggregation and improves the mixing efficiency with the materials.

[0012] Preferably, in any of the above embodiments, the discharge pipe includes an electric telescopic rod connected to a PLC control unit and a movable material pipe for conveying the carrier. The electric telescopic rod is fixedly installed inside the material distribution pipe, and a movable material pipe that extends and retracts inside the material distribution pipe is fixedly installed at one end of the electric telescopic rod.

[0013] The above technical solution is adopted as follows: the electric telescopic rod (mini electric push rod, connected to the PLC control unit signal) of the discharge pipe is fixed inside the distribution pipe, and the movable material tube (made of stainless steel) is fixed at the output end of the telescopic rod. It can extend and retract along the axial direction of the distribution pipe. The electric telescopic rod drives the movable material tube to extend and retract precisely, adjust the discharge height, and adapt to materials with different liquid levels in the mixing tank. The extension and retraction of the movable material tube and the rotation of the distribution pipe work together to achieve spiral distribution of the carrier, further improving the uniformity of carrier distribution. The stainless steel material is corrosion resistant, suitable for carrier conveying, and ensures long-term stable operation.

[0014] Preferably, one end of the baffle is provided with a connecting shaft for rotatable connection, and the baffle is rotatably connected to one end of the movable material tube via the connecting shaft.

[0015] The above technical solution is adopted as follows: The baffle (made of stainless steel with polished surface) is rotatably connected to the discharge end of the movable material tube via a connecting shaft (made of stainless steel). Under natural conditions, it closes under the action of gravity and can rotate unidirectionally outward. When the baffle closes naturally, it seals the movable material tube to prevent air from entering or the carrier from leaking when no material is being discharged. When the carrier is being discharged, the baffle automatically opens under the action of the carrier's gravity and pressurized airflow, without affecting the carrier's conveying. After the material is discharged, the baffle automatically closes under the action of gravity to prevent material or water vapor from flowing back into the movable material tube. The stainless steel material is corrosion resistant, and the connecting shaft rotates flexibly to ensure long-term reliable operation.

[0016] Preferably, in any of the above embodiments, the barrier includes a guide electric rod connected to the PLC control unit and a sealing plate for sealing the active load tank. The guide electric rod is fixedly installed inside the active load tank, and the output end of the guide electric rod is fixedly installed with a sealing plate that moves inside the active load tank.

[0017] The above technical solution is adopted as follows: the guide electric rod (miniature electric push rod, connected to the PLC control unit signal) of the barrier plate is fixed inside the active load tank, and the sealing plate (stainless steel material, with fluororubber sealing gasket on the surface) is fixed to the output end of the electric rod and can slide along the inner wall of the tank. The guide electric rod drives the sealing plate to open and close precisely. When closed, it seals the active load tank to prevent the carrier from getting damp or contaminated. When open, it forms a feeding channel without affecting the falling of the carrier. The fluororubber sealing gasket has strong corrosion resistance and excellent sealing performance, preventing the carrier from leaking from the sealing gap. The PLC controls the opening and closing of the sealing plate in sync with the carrier addition sequence to ensure accurate and controllable feeding.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. A load base plate is installed at the bottom of the mixing tank for real-time monitoring of the added materials. Based on the detection feedback of the materials by the load base plate, the active loading tank is controlled to add the corresponding amount of carrier into the mixing tank. Through the cooperation of the rotating material distribution frame and the discharge pipe, the carrier can be introduced into the mixing tank in a circular or spiral shape, which increases the distribution area and uniformity of the carrier, improves the uniformity of the mixing of materials and carrier, and is conducive to improving the activity of vanadium catalyst and improving the convenience of carrier distribution.

[0019] 2. A barrier plate is installed at the bottom of the active loading tank to block and seal the internal carrier, and a baffle plate affected by gravity is installed at one end of the discharge pipe. The barrier plate can be opened and closed according to the needs of use to discharge the carrier. The carrier's gravity pushes the baffle plate to open the discharge pipe, which helps to ensure the stability of the discharge pipe operation.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram according to an embodiment of the present utility model. Figure 2 This is a partial structural diagram according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the barrier sheet according to an embodiment of the present invention. Figure 4 This is a cross-sectional structural diagram of the mixing tank according to an embodiment of the present invention. Among them: 1-mixing tank, 2-spiral agitator, 21-drive motor, 22-threaded paddle, 3-load base plate, 31-pressure sensor, 32-load plate, 4-active load tank, 5-rotating material distribution frame, 51-motor pulley assembly, 52-material distribution pipe, 6-discharge pipe, 61-electric telescopic rod, 62-movable material pipe, 7-baffle, 8-barrier plate, 81-material guide electric rod, 82-sealing plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figure 1-4As shown, an embodiment of the present invention provides a vanadium catalyst preparation device for enhancing activity, comprising a stirring tank 1 for introducing neutralized vanadium material, a motor-driven spiral stirring paddle 2 fixedly installed inside the stirring tank 1, a load base plate 3 for monitoring the introduced material fixedly installed inside the stirring tank 1, a PLC control unit for information processing and automated control connected to the load base plate 3, an active load tank 4 for storing and detecting pretreated carriers fixedly installed at the bottom of the active load tank 4, a rotating material distribution frame 5 for discharging carriers fixedly installed at the bottom of the rotating material distribution frame 5, a discharge pipe 6 for telescopic adjustment fixedly installed inside the rotating material distribution frame 5, a baffle 7 for sealing and protecting one end of the discharge pipe 6 rotatably connected, and a barrier plate 8 for isolating the carriers provided above the rotating material distribution frame 5.

[0024] Preferably, the bottom of the mixing tank 1 is provided with a fixed leg to support it, and the spiral mixing paddle 2 includes a drive motor 21 connected to the PLC control unit and a spiral paddle 22 for stirring. The drive motor 21 is fixedly installed at the bottom of the mixing tank 1, and the spiral paddle 22 that rotates inside the mixing tank 1 is fixedly installed at the output end of the drive motor 21.

[0025] The above technical solution is adopted as follows: the bottom of the mixing tank 1 (made of stainless steel) is welded with 4 fixed legs (with rubber shock-absorbing pads at the bottom). The drive motor 21 (three-phase asynchronous motor, connected to the PLC control unit signal) of the spiral stirring paddle 2 is fixed to the bottom of the tank. The spiral paddle 22 (made of stainless steel) is fixed to the motor output end and can rotate inside the tank. The stainless steel mixing tank is resistant to acid and alkali corrosion, has a large volume suitable for batch preparation, polished inner wall to reduce material adhesion, fixed legs to support the tank body, rubber shock-absorbing pads to dampen stirring vibration and prevent tank displacement, the drive motor drives the spiral paddle to rotate at high speed, the spiral structure generates axial thrust to achieve strong mixing of materials and carrier, and the PLC controls the speed to adapt to different viscosity systems to ensure thorough mixing.

[0026] Based on the principle of corrosion resistance design, stainless steel blocks corrosive media through a chromium-nickel alloy passivation film. The support principle of the fixed legs is based on gravity balance, the vibration damping principle of the shock-absorbing pads is based on elastic deformation to absorb vibration energy, and the mixing principle of the spiral agitator is based on fluid mechanics. The spiral agitator rotates to form a spiral flow field, which evenly disperses the carrier into the material. The PLC, based on the principle of load feedback, adjusts the speed according to the motor load to avoid overload. Neutralized vanadium material is injected into the mixing tank 1. The PLC sets the speed of the drive motor 21 and starts the spiral agitator 22. After the carrier is added, the speed is adjusted to enhance mixing. After preparation is completed, the motor is stopped, the product is discharged, and clean water is injected. The agitator is started to clean the inner wall. The wear of the spiral agitator is checked regularly, the stability of the motor speed is tested, and the levelness of the mixing tank and the rotation deviation of the spiral agitator are calibrated regularly.

[0027] Preferably, in any of the above solutions, the load base plate 3 includes a pressure sensor 31 connected to the PLC control unit and a load plate 32 for carrying materials. The pressure sensor 31 is fixedly installed at the bottom of the mixing tank 1, and the detection end of the pressure sensor 31 is fixedly installed with the load plate 32 located inside the mixing tank 1.

[0028] The above technical solution is adopted: the pressure sensor 31 (piezoelectric type, connected to the PLC control unit signal) of the load base plate 3 is fixed at the bottom of the mixing tank 1, and the load plate 32 (stainless steel material) is fixed at the sensor detection end and laid flat at the bottom of the mixing tank. The pressure sensor monitors the weight of the material in the mixing tank in real time, providing data basis for the amount of carrier added. The stainless steel load plate is corrosion resistant, and the smooth surface reduces material residue. At the same time, it transmits pressure evenly. The weight data is fed back to the PLC in real time, realizing precise control of the amount of carrier added and avoiding excessive or insufficient carrier from affecting the catalyst activity.

[0029] Based on the principle of pressure weighing, the weight of the material is transmitted to the pressure sensor through the load plate. The sensor converts the pressure signal into weight data. The pressure transmission principle of the load plate is based on a rigid structure to ensure accurate weight detection. The PLC, based on the principle of proportional control, calculates the required amount of carrier according to the material weight and preset ratio, and controls the feeding of the active load tank 4. After the material is injected into the mixing tank 1, the load plate 32 bears the weight of the material. The pressure sensor 31 transmits the weight data to the PLC. The PLC calculates the required amount of carrier and sends a feeding command to the active load tank 4. During the carrier addition process, the sensor monitors the total weight in real time. When the threshold is reached, it feeds back to the PLC to stop feeding. After preparation is completed, the material is discharged, and the pressure sensor is zeroed and calibrated. The pressure sensor is calibrated periodically with standard weights, and the corrosion and flatness of the load plate surface are checked periodically. The PLC sets a weight threshold and controls the addition of carrier through the difference comparison method. The detection data of the pressure sensor is processed by a digital filtering algorithm to eliminate the interference of stirring vibration.

[0030] Preferably, in any of the above embodiments, the bottom of the active loading tank 4 is provided with a support frame that is fixedly installed with the mixing tank 1, the top of the active loading tank 4 is fixedly installed with a top cover with a built-in pressure pump, and the rotating material feeding frame 5 includes a motor pulley assembly 51 and a material feeding pipe 52 for guiding the carrier, which are connected to the PLC control unit. The motor pulley assembly 51 is fixedly installed inside the support frame, and the output end of the motor pulley assembly 51 is fixedly installed with the material feeding pipe 52 that rotates inside the support frame and the active loading tank 4.

[0031] The above technical solution is adopted as follows: the bottom of the active load tank 4 (made of stainless steel) is fixed to the mixing tank 1 by a support frame, and the top of the tank is equipped with a top cover with a built-in pressure pump (connected to the PLC signal). The motor pulley assembly 51 (servo motor) of the rotating material distribution frame 5 is fixed inside the support frame, and the material distribution tube 52 (made of stainless steel) is fixed to the output end of the motor pulley assembly and can rotate inside the mixing tank 1. The active load tank stores the pretreated carrier, the pressure pump provides the power to transport the carrier and ensures stable feeding of the carrier, the support frame provides a stable installation benchmark so that the material distribution tube is accurately located in the center of the mixing tank, the motor pulley assembly drives the material distribution tube to rotate at a uniform speed, and in conjunction with the discharge hole, realizes the annular distribution of the carrier, increases the carrier distribution area, and the rotating material distribution avoids carrier aggregation and improves the mixing efficiency with the material.

[0032] Based on the principle of pressurized conveying, the pressurized pump pushes the carrier along the pipeline using air pressure. The transmission principle of the rotating material distribution frame is based on belt drive. The motor speed is transmitted to the material distribution pipe after reduction. The dispersion principle of the material distribution pipe is based on centrifugal force. Under rotation, the carrier is thrown out from the discharge hole and evenly dispersed into the material. The PLC, based on the principle of linkage control, synchronously coordinates the pressurized pump pressure, the speed of the material distribution pipe, and the speed of the stirring paddle to ensure uniform distribution of the carrier. Detailed operation process: The pretreated carrier is loaded into the active load tank 4. The pressurized pump on the top cover maintains the pressure. After receiving the signal from the load base plate 3, the PLC starts the motor pulley assembly 51, which drives the material distribution pipe 52 to rotate. The discharge valve is opened. Under the action of pressurization and centrifugal force, the carrier is thrown out from the discharge hole into the material in the mixing tank 1. After the carrier is added, the pressurized pump and the motor pulley assembly are turned off. The discharge hole of the material distribution pipe is cleaned regularly, the pressurized pump pressure and the speed of the motor pulley assembly are tested, and the stability of the support frame and the concentricity of the rotation of the material distribution pipe are checked regularly.

[0033] Preferably, in any of the above embodiments, the discharge pipe 6 includes an electric telescopic rod 61 connected to the PLC control unit and a movable material pipe 62 for conveying the carrier. The electric telescopic rod 61 is fixedly installed inside the material distribution pipe 52, and one end of the electric telescopic rod 61 is fixedly installed with the movable material pipe 62 that extends and retracts inside the material distribution pipe 52.

[0034] The above technical solution is adopted as follows: the electric telescopic rod 61 (mini electric push rod, connected to the PLC control unit signal) of the discharge pipe 6 is fixed inside the distribution pipe 52, and the movable material pipe 62 (stainless steel material) is fixed at the output end of the telescopic rod. It can extend and retract along the axial direction of the distribution pipe. The electric telescopic rod drives the movable material pipe to extend and retract precisely, adjust the discharge height, and adapt to materials with different liquid levels in the mixing tank. The extension and retraction of the movable material pipe and the rotation of the distribution pipe work together to realize the spiral distribution of the carrier, further improving the uniformity of carrier distribution. The stainless steel material is corrosion resistant, suitable for carrier conveying, and ensures long-term stable operation.

[0035] Based on the linear drive principle, the electric telescopic rod converts the rotational motion of the motor into the axial extension and retraction of the movable material tube through a screw drive. The coordinated principle of extension and rotation is based on PLC timing control, which disperses the carrier along the spiral trajectory to avoid local aggregation. The positioning accuracy is based on closed-loop control, and the displacement sensor provides feedback on the extension and retraction amount to ensure accurate discharge height. Before the carrier is added, the PLC controls the electric telescopic rod 61 to extend based on the material level in the mixing tank 1, adjusting the height of the movable material tube 62. While the material distribution tube 52 rotates, the movable material tube extends and retracts synchronously to form a spiral material distribution trajectory. After the carrier is added, the electric telescopic rod retracts, and the movable material tube resets. The positioning accuracy of the electric telescopic rod is tested periodically, and the wear and corrosion of the movable material tube are checked. The extension and retraction stroke and material distribution trajectory of the movable material tube are calibrated periodically. The coordinated action of extension and rotation is implemented through PLC timing programming.

[0036] Preferably, one end of the baffle 7 is provided with a connecting shaft for rotatable connection, and the baffle 7 is rotatably connected to one end of the movable material tube 62 through the connecting shaft.

[0037] The above technical solution is adopted: the baffle 7 (made of stainless steel with polished surface) is rotatably connected to the discharge end of the movable material tube 62 via a connecting shaft (made of stainless steel). Under natural conditions, it is closed by gravity and can rotate unidirectionally outward. When the baffle is closed naturally, it seals the movable material tube to prevent air from entering or the carrier from leaking when no material is being discharged. When the carrier is being discharged, the baffle automatically opens under the action of the carrier's gravity and pressurized airflow, without affecting the carrier's conveying. After the material is discharged, the baffle automatically closes under gravity to prevent material or water vapor from flowing back into the movable material tube. The stainless steel material is corrosion resistant, and the connecting shaft rotates flexibly to ensure long-term reliable operation.

[0038] Based on the principle of gravity sealing, the baffle's own weight causes the sealing surface to adhere to the discharge end of the movable material tube, achieving a seal. During material discharge, based on the principle of pressure drive, the weight of the carrier and the thrust of the pressurized airflow together overcome the weight of the baffle, causing it to open. After material discharge is completed, based on the principle of gravity reset, the baffle automatically closes, restoring the sealed state. When no material is being discharged, the baffle 7 is closed by gravity, sealing the movable material tube 62. After the pressurizing pump is started, the carrier pushes the baffle open under the action of pressure and gravity, and is discharged from the movable material tube. During the carrier conveying process, the baffle remains open. After material discharge is completed, the pressurizing pump stops, and the baffle resets and closes under the action of gravity. The baffle and connecting shaft are cleaned regularly (without carrier residue), the flexibility of the baffle opening and closing is tested, and the baffle sealing gap and shaft wear are checked regularly.

[0039] Preferably, in any of the above embodiments, the barrier plate 8 includes a guide electric rod 81 connected to the PLC control unit and a sealing plate 82 for sealing the active load tank 4. The guide electric rod 81 is fixedly installed inside the active load tank 4, and the output end of the guide electric rod 81 is fixedly installed with the sealing plate 82 that moves inside the active load tank 4.

[0040] The above technical solution is adopted as follows: the guide electric rod 81 (a miniature electric push rod, connected to the PLC control unit signal) of the barrier plate 8 is fixed inside the active load tank 4, and the sealing plate 82 (made of stainless steel with a fluororubber sealing gasket on the surface) is fixed to the output end of the electric rod and can slide along the inner wall of the tank. The guide electric rod drives the sealing plate to open and close precisely. When closed, it seals the active load tank to prevent the carrier from getting damp or contaminated. When opened, it forms a feeding channel without affecting the falling of the carrier. The fluororubber sealing gasket has strong corrosion resistance and excellent sealing performance, preventing the carrier from leaking from the sealing gap. The PLC controls the opening and closing of the sealing plate in sync with the timing of carrier addition to ensure accurate and controllable feeding.

[0041] Based on the principle of electric drive, the electric guide rod drives the sealing plate to slide through linear motion, realizing the opening and closing of the inner cavity of the tank. The sealing principle of the sealing plate is based on elastic sealing, and the fluororubber gasket is compressed and deformed to fill the gap. The PLC is based on the principle of timing control. According to the weight feedback of the load base plate 3, the PLC precisely controls the timing and degree of opening of the sealing plate. After the carrier is loaded into the active load tank 4, the PLC controls the electric guide rod 81 to extend, driving the sealing plate 82 to close and seal the tank. After receiving the unloading command, the electric rod retracts and the sealing plate opens. After the carrier is unloaded, the electric rod extends and the sealing plate resets and closes. The sealing plate and sealing gasket are cleaned regularly, the positioning accuracy of the electric guide rod is tested, and the wear and sealing performance of the sealing gasket are checked regularly.

[0042] The working principle of the vanadium catalyst preparation device with enhanced activity of this invention is as follows: The neutralized vanadium material is introduced into the mixing tank 1. The material falls onto the load plate 32 of the load base plate 3. The pressure sensor 31 detects the weight of the material in real time and transmits it to the PLC control unit. The PLC calculates the required amount of carrier according to the preset ratio and sends a command to the active load tank 4 to control the guide electric rod 81 of the barrier plate 8 to retract, which drives the sealing plate 82 to open. The pre-treated carrier in the tank enters the distribution pipe 52 of the rotating distribution frame 5 under the action of the top cover pressurization pump. At the same time, the PLC starts the motor pulley group 51 of the rotating distribution frame 5, which drives the distribution pipe 52 to rotate at a constant speed in the mixing tank 1. It also controls the electric telescopic rod 61 of the discharge pipe 6 to drive the movable material pipe 62 to extend and retract, adjusting the discharge height. Under the action of pressure and centrifugal force, the carrier pushes the baffle 7 (which opens automatically against gravity) and is discharged from the movable material pipe, and is evenly dispersed into the material along the spiral trajectory. During this process, the drive motor 21 of the spiral agitator 2 inside the mixing tank 1 starts, driving the spiral impeller 22 to rotate at high speed, which strongly mixes the material and the carrier. The load base plate 3 continuously monitors the total weight and feeds back to the PLC when the preset value is reached, shutting off the barrier plate 8, the pressure pump and the rotating material distribution frame. The agitator continues to run until the mixture is uniform. After the preparation is completed, the stirring stops and the vanadium catalyst is discharged. All the structures work together to achieve fully automated preparation of the entire process of "material weighing - precise carrier distribution - strong mixing", which improves the uniformity of carrier distribution and catalyst activity.

[0043] Compared with the prior art, the present invention has the following advantages: 1. A load base plate 3 is installed at the bottom of the mixing tank 1 for real-time monitoring of the added materials. Based on the detection feedback of the materials by the load base plate 3, the active loading tank 4 is controlled to add the corresponding amount of carrier into the mixing tank 1. The carrier can be introduced into the mixing tank 1 in a circular or spiral shape through the cooperation of the rotating material rack 5 and the discharge pipe 6, which increases the distribution area and uniformity of the carrier, improves the uniformity of the mixing of materials and carrier, and is conducive to improving the activity of vanadium catalyst and improving the convenience of carrier distribution.

[0044] 2. A barrier plate 8 is installed at the bottom of the active loading tank 4 to block and seal the internal carrier, and a baffle 7 affected by gravity is installed at one end of the discharge pipe 6. The barrier plate 8 can be opened and closed to discharge the carrier according to the needs of use. The carrier's gravity pushes the baffle 7 to open the discharge pipe 6, which helps to ensure the stability of the operation of the discharge pipe 6.

Claims

1. A device for preparing an activity-enhancing vanadium catalyst, comprising a stirring tank (1) for introducing neutralized vanadium material, wherein a motor-driven spiral stirring paddle (2) is fixedly installed inside the stirring tank (1), characterized in that: The mixing tank (1) is fixedly installed with a load base plate (3) for monitoring the introduced material. The load base plate (3) is connected to a PLC control unit for information processing and automatic control. The PLC control unit is connected to an active load tank (4) for storing and detecting the pre-treated carrier. The bottom of the active load tank (4) is fixedly installed with a rotating cloth rack (5) for discharging the carrier. The rotating cloth rack (5) is fixedly installed with a discharge pipe (6) for telescopic adjustment. One end of the discharge pipe (6) is rotatably connected to a baffle (7) for sealing and protecting it. A barrier plate (8) for isolating the carrier is provided above the rotating cloth rack (5).

2. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 1, characterized in that: The bottom of the mixing tank (1) is provided with fixed legs to support it. The spiral mixing paddle (2) includes a drive motor (21) connected to the PLC control unit and a spiral paddle (22) for stirring. The drive motor (21) is fixedly installed at the bottom of the mixing tank (1). The output end of the drive motor (21) is fixedly installed with a spiral paddle (22) that rotates inside the mixing tank (1).

3. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 2, characterized in that: The load base plate (3) includes a pressure sensor (31) connected to the PLC control unit and a load plate (32) for carrying materials. The pressure sensor (31) is fixedly installed at the bottom of the mixing tank (1), and the detection end of the pressure sensor (31) is fixedly installed with the load plate (32) located inside the mixing tank (1).

4. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 3, characterized in that: The bottom of the active load tank (4) is provided with a support frame that is fixedly installed with the mixing tank (1). The top of the active load tank (4) is fixedly installed with a top cover with a built-in pressure pump. The rotating material feeding frame (5) includes a motor pulley assembly (51) connected to the PLC control unit and a material feeding pipe (52) for guiding the carrier. The motor pulley assembly (51) is fixedly installed inside the support frame. The output end of the motor pulley assembly (51) is fixedly installed with a material feeding pipe (52) that rotates inside the support frame and the active load tank (4).

5. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 4, characterized in that: The discharge pipe (6) includes an electric telescopic rod (61) connected to the PLC control unit and a movable material pipe (62) for conveying the carrier. The electric telescopic rod (61) is fixedly installed inside the cloth pipe (52), and a movable material pipe (62) that extends and retracts inside the cloth pipe (52) is fixedly installed at one end of the electric telescopic rod (61).

6. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 5, characterized in that: One end of the baffle (7) is provided with a connecting shaft for rotational connection, and the baffle (7) is rotatably connected to one end of the movable material tube (62) through the connecting shaft.

7. The apparatus for preparing an activity-enhancing vanadium catalyst as described in claim 6, characterized in that: The barrier plate (8) includes a guide electric rod (81) connected to the PLC control unit and a sealing plate (82) for sealing the active load tank (4). The guide electric rod (81) is fixedly installed inside the active load tank (4), and the output end of the guide electric rod (81) is fixedly installed with a sealing plate (82) that moves inside the active load tank (4).

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