Vacuum oven for drying catalyst
By using a cyclic pelvation and mixing mechanism in a vacuum oven for catalyst drying, the problem of extension of the catalyst drying cycle in the existing technology is solved, and the uniform drying and efficiency improvement of the catalyst is realized.
Patent Information
- Application Number
- CN202420975256.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-08
AI Technical Summary
In the existing catalyst drying technology, the heating process of the electric heating tube is slow, resulting in the extended drying cycle of large batches or large volumes of catalysts, affecting production efficiency.
A vacuum oven is designed with a catalyst drying, using a circulating push mechanism and a mixing mechanism. It drives the spiral blades and mixing racks through the drive shaft to ensure that the catalyst is evenly dried in the dynamic process.
Through the design of the loop push and mixing mechanism, the catalyst can be evenly exposed to the hot air during the drying process, avoiding local temperature differences, and improving the uniformity and efficiency of drying.
Smart Images
Figure CN222393180U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of catalyst processing, and in particular to a vacuum oven for catalyst drying. Background Art
[0002] A catalyst is a substance that accelerates the reaction rate, reduces the activation energy and promotes the reaction in a chemical reaction. The catalyst needs to be dried during the processing. Drying can help improve the activity, surface area and stability of the catalyst to ensure its good performance in practical applications.
[0003] There are many ways to dry existing catalysts, including using a vacuum oven to dry the catalyst, and using the heat generated by electric heating tubes in the oven to dry the catalyst. The heating process of the electric heating tubes may be relatively slow, especially for large batches or large volumes of catalyst samples, which may extend the entire drying cycle and affect production efficiency. Utility Model Content
[0004] In view of this, the purpose of the utility model is to solve the shortcomings existing in the background technology, and to propose a vacuum oven for catalyst drying to solve the problems existing in the prior art.
[0005] To achieve the above objectives, the utility model provides a vacuum oven for catalyst drying, comprising a drying box, a feed valve is provided on the top of the drying box, a discharge valve is provided on the bottom of the drying box, a motor is fixedly installed on the top of the drying box, a drive shaft is fixedly connected to the output end of the motor, a sealing ring is provided on the outer surface of the drive shaft, a stirring mechanism is provided on the outer surface of the drive shaft, a circulating pushing mechanism is provided on the outer surface of the drive shaft, an electric heating tube is provided on the top of the inner wall of the drying box, an exhaust fan is provided on the surface of the drying box, and a sealing ring is provided at the contact position between the drive shaft and the drying box to maintain the vacuum state of the drying box.
[0006] Preferably, the stirring mechanism comprises a fixing plate fixedly connected to the outer surface of the driving shaft, and the fixing plates are in three groups. The catalyst in the drying box can be stirred by the stirring mechanism so that it is dried in a dynamic process.
[0007] Preferably, one end of the fixed plate away from the driving shaft is fixedly connected to a stirring frame, and the outer surface of the stirring frame is provided with filter holes.
[0008] Preferably, the bottom of the driving shaft is fixedly connected to a chassis, and the outer surface of the chassis is provided with a rotary cutting triangle. The rotary cutting triangle is designed in three groups, which can stir the catalyst at the bottom of the drying box to prevent its deposition and aggregation.
[0009] Preferably, the circulating pushing mechanism includes a spiral blade arranged on the outer surface of the driving shaft, and the inner bottom of the drying box is fixedly connected with a base ring, the base ring and the pushing barrel are in a fixed state, and the catalyst can be transmitted upward from the bottom of the pushing barrel.
[0010] Preferably, a push barrel is fixedly connected to the top of the base ring, and the inner wall of the push barrel is in contact with the edge of the spiral blade.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The vacuum oven for catalyst drying can make the catalyst move up and down in the oven through the circulating pushing mechanism to ensure that each catalyst particle can be evenly exposed to the hot air, and can make the hot air flow through the catalyst layer better, avoiding local temperature differences and improving the uniformity of drying.
[0013] 2. The vacuum oven for drying the catalyst can prevent the catalyst from being locally overheated or over-humidified during the drying process through the stirring mechanism, which helps to accelerate the volatilization of water and improve the drying efficiency, thereby ensuring that the catalyst can maintain a uniform temperature and humidity distribution during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of this application;
[0015] Figure 2 This is a schematic diagram of the internal structure of the drying box for this application;
[0016] Figure 3 This is a schematic diagram of the internal structure of the push barrel for this application;
[0017] Figure 4 This is a schematic diagram of the rotary cut triangle structure of this application.
[0018] Among them: 1. Drying box; 2. Feed valve; 3. Discharge valve; 4. Motor; 5. Drive shaft; 6. Sealing ring; 7. Fixed plate; 8. Stirring frame; 9. Filter hole; 10. Chassis; 11. Peeling triangle; 12. Spiral blade; 13. Chassis ring; 14. Push barrel; 15. Electric heating tube; 16. Vacuum fan. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0020] See also Figure 1-4 A vacuum oven for catalyst drying comprises a drying box 1, a feed valve 2 is arranged on the top of the drying box 1, a discharge valve 3 is arranged on the bottom of the drying box 1, a motor 4 is fixedly installed on the top of the drying box 1, a driving shaft 5 is fixedly connected to the output end of the motor 4, a sealing ring 6 is arranged on the outer surface of the driving shaft 5, a stirring mechanism is arranged on the outer surface of the driving shaft 5, a circulating pushing mechanism is arranged on the outer surface of the driving shaft 5, an electric heating tube 15 is arranged on the top of the inner wall of the drying box 1, and an exhaust fan 16 is arranged on the surface of the drying box 1.
[0021] Through the above technical solution, when the device is in use, the feed valve 2 is opened to put the catalyst into the drying box 1, and the catalyst is dried by the electric heating tube 15. During this process, the catalyst is stirred by the stirring mechanism, and the reciprocating pushing of the circulating pushing mechanism is coordinated to change the position of the catalyst, thereby dynamically drying the catalyst to the greatest extent.
[0022] Specifically, the stirring mechanism includes a fixing plate 7 fixedly connected to the outer surface of the driving shaft 5, and the fixing plates 7 are provided in three groups.
[0023] Through the above technical solution, the driving shaft 5 can drive the three sets of fixed plates 7 to rotate synchronously during the rotation process, and then the connected stirring frames 8 can be linked to rotate.
[0024] Specifically, one end of the fixed plate 7 away from the driving shaft 5 is fixedly connected to a stirring frame 8 , and a filter hole 9 is formed on the outer surface of the stirring frame 8 .
[0025] Through the above technical solution, when the stirring frame 8 stirs the catalyst, part of the catalyst can pass through the filter hole 9, thereby accelerating the flow of the catalyst.
[0026] Specifically, the bottom of the driving shaft 5 is fixedly connected with a chassis 10 , and the outer surface of the chassis 10 is provided with a rotary cutting triangle 11 .
[0027] Through the above technical solution, the rotary cutting triangle 11 can rotary cut the catalyst at the bottom of the drying box 1 to prevent the catalyst from agglomerating into blocks.
[0028] Specifically, the circulating pushing mechanism includes a spiral blade 12 arranged on the outer surface of the driving shaft 5 , and a bottom frame ring 13 is fixedly connected to the inner bottom of the drying box 1 .
[0029] Through the above technical solution, the driving shaft 5 can transport the catalyst up and down through the spiral blades 12 during the rotation process.
[0030] Specifically, a push barrel 14 is fixedly connected to the top of the base ring 13 , and the inner wall of the push barrel 14 is in contact with the edge of the spiral blade 12 .
[0031] Through the above technical solution, the spiral blades 12 can flip the position of the catalyst during the process of pushing the material up and down, so that the catalyst at the bottom is transported to a relatively upper position.
[0032] Working principle: When the device is in use, first open the feed valve 2 to put the catalyst into the drying box 1, then close the feed valve 2 to make the drying box 1 in a sealed state, and at the same time use the vacuum pump 16 to evacuate the airflow in the drying box 1 to make it in a vacuum state, then turn on the motor 4 to drive the drive shaft 5 to rotate. During the rotation of the drive shaft 5, the airflow is prevented from entering due to the protection of the sealing ring 6, and during the rotation of the drive shaft 5, the stirring frame 8 will rotate synchronously, and the stirring frame 8 can stir the catalyst, and part of the catalyst can accelerate the flow through the filter hole 9, thereby turning the catalyst as a whole. The stirring mechanism can ensure that the catalyst can maintain a uniform temperature distribution and humidity distribution during the drying process, and stirring can prevent the catalyst from being locally overheated or over-humidified during the drying process. , which helps to accelerate the volatilization of water and improve the drying efficiency. At the same time, it can prevent the adhesion between catalyst particles, thereby improving the overall drying effect. At the same time, the chassis 10 at the bottom of the driving shaft 5 drives the rotary cutting triangle 11 to rotary cut the catalyst at the bottom of the drying box 1 during the rotation process to avoid agglomeration. During the rotation of the driving shaft 5, the spiral blades 12 will transport the catalyst, and then transfer the catalyst from the pushing barrel 14 from the bottom to the top, thereby reciprocating the catalyst. The catalyst circulates up and down in the drying box 1 to ensure that each catalyst particle can be evenly exposed to the hot air, and the hot air can flow through the catalyst layer better, avoiding local temperature differences and improving the uniformity of drying. After the drying is completed, the discharge valve 3 is opened to collect the catalyst.
[0033] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A vacuum oven for catalyst drying, comprising a drying oven (1), characterized in that: The top of the drying box (1) is provided with a feed valve (2), the bottom of the drying box (1) is provided with a discharge valve (3), the top of the drying box (1) is fixedly mounted with a motor (4), the output end of the motor (4) is fixedly connected with a drive shaft (5), the outer surface of the drive shaft (5) is provided with a sealing ring (6), the outer surface of the drive shaft (5) is provided with a stirring mechanism, the outer surface of the drive shaft (5) is provided with a circulating pushing mechanism, the top of the inner wall of the drying box (1) is provided with an electric heating pipe (15), and the surface of the drying box (1) is provided with an exhaust fan (16).
2. A vacuum oven for catalyst drying according to claim 1, characterized in that: The stirring mechanism comprises a fixing plate (7) fixedly connected to the outer surface of the driving shaft (5), and the fixing plates (7) are provided in three groups.
3. A vacuum oven for catalyst drying according to claim 2, characterized in that: One end of the fixed plate (7) away from the driving shaft (5) is fixedly connected to a stirring frame (8), and a filter hole (9) is provided on the outer surface of the stirring frame (8).
4. A vacuum oven for catalyst drying according to claim 1, characterized in that: The bottom of the driving shaft (5) is fixedly connected to a chassis (10), and the outer surface of the chassis (10) is provided with a rotary cutting triangle (11).
5. The vacuum oven for catalyst drying according to claim 1, characterized in that: The circulating material pushing mechanism comprises a spiral blade (12) arranged on the outer surface of the driving shaft (5), and a bottom frame ring (13) is fixedly connected to the inner bottom of the drying box (1).
6. A vacuum oven for catalyst drying according to claim 5, characterized in that: A pushing cylinder (14) is fixedly connected to the top of the base ring (13), and the inner wall of the pushing cylinder (14) is in contact with the edge of the spiral blade (12).