A laboratory catalyst pre-drying device

Abstract

The utility model relates to laboratory tool technical field, concretely is a kind of experimental catalyst pre-drying device, including drying bin, the inside installation of drying bin has rack, drying agent tank is placed on rack, the top of drying bin is detachably installed with top cover, the inside installation of top cover has heating component, heating component can be adjusted height by lifting, the effect of adjusting catalyst heating drying. In the experimental catalyst pre-drying device, by setting the heating component of liftable in the inside of top cover, heating distance can be flexibly adjusted according to the stacking height of catalyst, accurately control heat transfer, effectively avoid the situation of local overheating or uneven heating, make catalyst evenly heated, guarantee drying effect consistency;Fan blows air to drying agent tank through air guide pipe, hot air accelerates catalyst surface moisture evaporation, exhaust hood expels humid air in time, forms directional airflow circulation, greatly improves drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laboratory tool technology, and more specifically, to a catalyst pre-drying device for experiments. Background Technology

[0002] In the fields of chemical experiments and catalysis research, catalyst pretreatment is extremely crucial, with the drying process having a decisive impact on catalyst performance. During routine storage and transportation, catalysts readily adsorb moisture from the surrounding environment. Once this moisture adheres to the catalyst surface, it can interfere with the active sites, significantly reducing catalytic efficiency and even triggering unnecessary side reactions in certain chemical reactions. Therefore, effectively pre-drying the catalyst before conducting formal catalytic experiments to thoroughly remove adsorbed moisture is a necessary measure to improve catalyst activity and stability.

[0003] Currently, various methods are used for catalyst drying in laboratories. Traditional oven drying relies on hot air circulation to evaporate moisture. However, in actual operation, it is difficult to ensure uniform hot air flow inside the oven, which can easily lead to localized overheating of the catalyst and adversely affect its performance. Moreover, when using oven drying, operators cannot observe the drying status of the catalyst in real time, making it difficult to accurately control the drying conditions. Although vacuum drying technology can dry catalysts at relatively low temperatures, effectively avoiding damage from high temperatures, its equipment is expensive and the operation process is quite complex. This makes it unsuitable for small laboratories with limited experimental funds and high operating frequency.

[0004] For example, invention patent application number 201510963677.X proposes a catalyst drying assembly. This assembly includes a chamber with multiple detachable partitions inside. Numerous small holes are evenly distributed on the partitions, a design that facilitates more uniform hot air circulation within the chamber for catalyst drying. A door with a high-temperature resistant transparent glass plate is installed at the front of the chamber, allowing operators to easily observe the internal conditions. A ventilation ring wall is provided at the top of the chamber, with multiple ventilation holes for air circulation. Furthermore, a humidity detection device is installed on the inner wall of the chamber to monitor the internal humidity in real time. This device is electrically connected to a control panel located on the outer wall of the chamber. Operators can obtain humidity values ​​through the control panel and adjust the baking temperature within the chamber to effectively control the catalyst drying rate. However, the device also has certain limitations. Its internal structure is relatively complex, and the design of multiple partitions and ventilation structures makes the assembly and cleaning of the device quite cumbersome. Moreover, although it can adjust the temperature and know the humidity, it is difficult to flexibly adjust the position of the heating components for catalysts with different stacking heights, which may lead to differences in drying effect. Utility Model Content

[0005] The purpose of this invention is to provide an experimental catalyst pre-drying device to solve the problem mentioned in the background art that it is difficult to flexibly adjust the position of the heating component for catalysts with different stacking heights, which may lead to differences in drying effect.

[0006] To achieve the above objectives, this utility model provides an experimental catalyst pre-drying device, including a drying chamber, a placement rack installed inside the drying chamber, a desiccant tank placed on the placement rack, a top cover detachably installed on the top of the drying chamber, and a heating component installed on the inner side of the top cover. The heating component can adjust its height by raising and lowering to adjust the effect of heating and drying the catalyst.

[0007] This setup includes a drying chamber that provides a closed drying space for the entire unit; a shelf to hold the desiccant tank and provide a platform for placing the catalyst; a removable top cover for easy insertion and removal of the catalyst by operators; and a heating element inside the top cover whose height can be adjusted to change the distance between it and the catalyst, thereby adjusting the heat transfer efficiency and controlling the heating and drying effect. When it is necessary to dry catalysts of different thicknesses or properties, the height of the heating element can be adjusted to ensure that the catalyst is dried at a suitable temperature.

[0008] Preferably, an air duct is installed on one inner wall of the drying chamber, a fan is installed at the upper end of the air duct, and the lower end of the air duct is horizontally positioned and directly opposite the desiccant tank.

[0009] This feature involves the fan generating suction to draw air into the duct, which then directs the air towards the desiccant tank, creating forced convection. The flowing air carries away moisture evaporated from the catalyst surface, accelerating the drying process.

[0010] Preferably, a filter screen is installed at the upper end of the air duct near the fan.

[0011] This feature involves installing a filter screen near the fan in the air duct. When the fan draws in air, the filter screen can intercept dust, impurities, and other particulate matter in the air, preventing them from entering the drying chamber and contaminating the catalyst.

[0012] Preferably, an exhaust duct is installed inside the drying chamber away from the air duct, and the outer end of the exhaust duct is connected to an exhaust duct.

[0013] This setup includes an exhaust duct and an exhaust pipe, which together form an exhaust system. During the fan's air delivery process, the high-humidity air inside the drying chamber is discharged to the external environment through the exhaust duct and exhaust pipe under pressure, creating an air circulation within the drying chamber.

[0014] Preferably, a water-permeable mesh is installed at the bottom of the desiccant tank, and the aperture of the water-permeable mesh is smaller than the diameter of the desiccant particles.

[0015] This feature involves installing a drain screen at the bottom of the desiccant tank. The screen's aperture is smaller than the diameter of the desiccant particles. During the catalyst drying process, moisture will drain downwards through the drain screen, while the desiccant particles are trapped inside the tank and will not fall out.

[0016] Preferably, the bottom of the desiccant tank is equipped with support legs.

[0017] This feature includes legs at the bottom of the desiccant tank that support the tank, creating a space between it and the bottom of the drying chamber. This allows air to circulate beneath the desiccant tank, ensuring that the bottom of the catalyst also comes into full contact with the hot air.

[0018] Preferably, the heating component includes a lifting plate, an electric heating wire is installed at the bottom of the lifting plate, and threaded rods are vertically installed at the upper parts of both ends of the lifting plate. The upper end of the threaded rod passes through the top cover and is limited by a limiting nut. The limiting nut can be adjusted by turning to adjust the height of the threaded rod.

[0019] This feature allows for height adjustment of the lifting plate and heating wire by rotating a limit nut, which moves the threaded rod up and down. When the limit nut is rotated upwards, the threaded rod rises, raising the lifting plate and heating wire; conversely, it lowers them, thus precisely adjusting the distance between the heating element and the catalyst.

[0020] Preferably, a sealing rubber ring is provided at the connection between the top cover and the drying chamber.

[0021] The sealing rubber ring in this design has good elasticity. When the top cover is connected to the drying chamber, it is squeezed to fill the gap, forming a sealing structure that prevents outside air from entering the drying chamber.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In the catalyst pre-drying device used in this experiment, a height-adjustable heating component is installed inside the top cover. This allows for flexible adjustment of the heating distance based on the stacking height of the catalyst, precisely controlling heat transfer and effectively avoiding localized overheating or uneven heating. This ensures uniform heating of the catalyst and guarantees consistent drying results. Simultaneously, the air circulation system is formed by the air ducts, fans, exhaust ducts, and exhaust pipes inside the drying chamber. The fans blow air through the air ducts to the desiccant tank, and the hot air accelerates the evaporation of moisture from the catalyst surface. The exhaust ducts promptly discharge the humid air, creating a directional airflow circulation that greatly improves drying efficiency. Compared to traditional oven drying, this method dries the catalyst more quickly and evenly.

[0024] The drain screen installed at the bottom of the desiccant tank prevents desiccant particles from falling off while facilitating the drainage of residual moisture, maintaining a dry environment. The support legs design creates a certain space between the desiccant tank and the bottom of the drying chamber, which is conducive to air circulation and further improves the drying effect. The top cover and the drying chamber are detachably connected and equipped with a sealing rubber ring, which not only makes it easy to open the top cover to observe the drying status of the catalyst, but also ensures the airtightness of the drying chamber to prevent external moisture from entering and affecting the drying effect. It also facilitates the assembly, disassembly, cleaning and maintenance of the device, making it simpler to operate compared to existing complex drying devices. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the desiccant tank in this utility model;

[0027] Figure 3 This is a schematic diagram of the heating component in this utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Drying chamber; 11. Air duct; 12. Filter screen; 13. Exhaust hopper; 14. Exhaust pipe; 2. Top cover; 3. Placement rack; 31. Desiccant tank; 311. Drainage mesh; 32. Support leg; 4. Heating component; 41. Lifting plate; 42. Electric heating wire; 43. Threaded rod; 44. Limit nut; 5. Fan. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] This invention provides a catalyst pre-drying device for experimental use, such as... Figure 1 As shown, the device includes a drying chamber 1, inside which a rack 3 is installed, on which a desiccant trough 31 is placed. A top cover 2 is detachably installed on the top of the drying chamber 1, and a heating element 4 is installed on the inner side of the top cover 2. The heating element 4 can be adjusted in height by lifting and lowering to adjust the effect of heating and drying the catalyst.

[0032] The drying chamber 1 provides a closed drying space for the entire device; the placement rack 3 supports the desiccant tank 31 and provides a platform for placing the catalyst; the removable top cover 2 facilitates the insertion and removal of the catalyst by operators; the heating element 4 inside the top cover 2 can be adjusted in height to change the distance between it and the catalyst, thereby adjusting the heat transfer efficiency and controlling the heating and drying effect. When it is necessary to dry catalysts of different thicknesses or properties, the height of the heating element 4 can be adjusted to dry the catalyst at a suitable temperature. This achieves flexible control of the heating conditions during the catalyst drying process, meets the drying requirements of different types and stacking heights of catalysts, and improves the accuracy of drying; the removable top cover 2 facilitates operation and observation, while ensuring the airtightness of the drying chamber 1 to prevent external moisture from entering and affecting the drying effect.

[0033] In this embodiment, as Figure 1 As shown, an air duct 11 is installed on one inner wall of the drying chamber 1. A fan 5 is installed at the upper end of the air duct 11, and the lower end of the air duct 11 is horizontally positioned and directly opposite the desiccant tank 31.

[0034] When the fan 5 is working, it generates suction, drawing air into the air duct 11. After passing through the air duct 11, the air is directed towards the desiccant tank 31, forming forced convection. The flowing air carries away the moisture evaporated from the catalyst surface, accelerating the drying process. Through forced convection, the heat exchange and moisture transfer between the air and the catalyst surface are accelerated, significantly improving the drying efficiency; the directional airflow ensures that all parts of the catalyst surface are heated and dried evenly, avoiding localized insufficient drying.

[0035] Specifically, such as Figure 1 As shown, a filter screen 12 is installed at the upper end of the air duct 11 near the fan 5.

[0036] The filter screen 12 is installed near the fan 5 in the air duct 11. When the fan 5 draws in air, the filter screen 12 can intercept dust, impurities, and other particulate matter in the air, preventing them from entering the drying chamber 1 and contaminating the catalyst. This ensures that the air entering the drying chamber 1 is clean, avoids impurities adhering to the catalyst surface, and prevents them from affecting the catalyst's performance and experimental results, thereby improving the quality of the catalyst after drying.

[0037] Furthermore, such as Figure 1 As shown, an exhaust duct 13 is installed inside the drying chamber 1, away from the air duct 11, and an exhaust duct 14 is connected to the outer end of the exhaust duct 13.

[0038] The exhaust duct 13 and exhaust pipe 14 constitute the exhaust system. During the air supply process of the fan 5, the air with high humidity in the drying chamber 1 is discharged to the external environment through the exhaust duct 13 and exhaust pipe 14 under pressure, creating an air circulation within the drying chamber 1. This timely discharge of humid air generated during the drying process maintains the dryness of the air in the drying chamber 1, ensures a stable drying environment, continuously provides favorable conditions for catalyst drying, and further improves drying efficiency and effectiveness.

[0039] Furthermore, such as Figure 2 As shown, a drain screen 311 is installed at the bottom of the desiccant tank 31, and the aperture of the drain screen 311 is smaller than the diameter of the desiccant particles. A drain pipe is installed on one side of the bottom of the drying chamber 1 to drain excess moisture during drying.

[0040] A drain mesh 311 is installed at the bottom of the desiccant tank 31. Its aperture is smaller than the diameter of the desiccant particles. During the catalyst drying process, moisture will drain downwards through the drain mesh 311, while the desiccant particles are blocked inside the tank and will not fall out. This allows moisture in the desiccant tank 31 to drain out in a timely manner, preventing water accumulation from affecting the drying effect, while also preventing the desiccant particles from scattering, ensuring the normal use of the desiccant and the cleanliness of the inside of the drying chamber 1.

[0041] Furthermore, such as Figure 1 As shown, a support leg 32 is installed at the bottom of the desiccant tank 31.

[0042] The support legs 32 at the bottom of the desiccant tank 31 support the desiccant tank 31, creating a certain space between it and the bottom of the drying chamber 1. This facilitates air circulation below the desiccant tank 31, allowing the bottom of the catalyst to fully contact the hot air. This improves the air circulation conditions of the catalyst within the desiccant tank 31, preventing insufficient drying at the bottom of the catalyst due to poor air circulation, resulting in more uniform drying of the catalyst and improved drying quality.

[0043] Furthermore, such as Figure 3 As shown, the heating component 4 includes a lifting plate 41, an electric heating wire 42 is installed at the bottom of the lifting plate 41, and threaded rods 43 are vertically installed at the upper parts of both ends of the lifting plate 41. The upper end of the threaded rod 43 passes through the top cover 2 and is limited by a limiting nut 44. The limiting nut 44 can be adjusted by turning to adjust the height of the threaded rod 43.

[0044] By turning the limiting nut 44, the threaded rod 43 can be moved up and down, thereby adjusting the height of the lifting plate 41 and the electric heating wire 42. When the limiting nut 44 is turned upward, the threaded rod 43 rises, causing the lifting plate 41 and the electric heating wire 42 to rise; conversely, it lowers, thus precisely adjusting the distance between the heating element 4 and the catalyst. This allows for flexible and precise adjustment of the height of the heating element 4 according to actual drying needs, ensuring the catalyst is dried under optimal temperature and heat conditions, improving the controllability and adaptability of the drying effect, and meeting the needs of different drying scenarios.

[0045] Furthermore, a sealing rubber ring is provided at the connection between the top cover 2 and the drying chamber 1.

[0046] A sealing rubber ring is installed at the connection between the top cover 2 and the drying chamber 1. Utilizing its good elasticity, it is compressed and fills the gap when the top cover 2 and the drying chamber 1 are connected, forming a sealing structure that prevents outside air from entering the drying chamber 1. This ensures the airtightness of the drying chamber 1, maintains a stable internal drying environment, prevents external moisture from entering and interfering with the drying process, ensures that the catalyst can be dried under the expected drying conditions, and improves the drying quality and the accuracy of experimental results.

[0047] In use, the operator first opens the removable top cover 2 and places the catalyst to be dried in the desiccant tank 31, which is then placed on the rack 3. The rack 3 provides stable support for the desiccant tank 31, and the legs 32 at the bottom of the desiccant tank 31 create space between it and the bottom of the drying chamber 1, facilitating air circulation. Simultaneously, a drainage mesh 311 is installed at the bottom of the desiccant tank 31; its aperture is smaller than the diameter of the desiccant particles, preventing desiccant particles from falling and allowing moisture generated during the drying process to drain smoothly. Afterward, the top cover 2 is closed. The sealing rubber ring at the connection between the top cover 2 and the drying chamber 1 is pressurized to fill the gap, forming a sealed structure that ensures the interior of the drying chamber 1 is sealed, preventing external moisture from entering and interfering with the drying process.

[0048] The heating element 4 installed inside the top cover 2 begins to operate. The bottom of the lifting plate 41 in the heating element 4 is equipped with an electric heating wire 42. By tightening the limiting nut 44, the threaded rod 43 moves up and down, thereby adjusting the height of the lifting plate 41 and the electric heating wire 42. The distance between the electric heating wire 42 and the catalyst is adjusted according to the thickness and properties of the catalyst to be dried, thereby changing the heat transfer efficiency and ensuring that the catalyst is heated at a suitable temperature, achieving flexible and precise control of the heating conditions during the drying process.

[0049] Simultaneously, the blower 5 starts, generating suction to draw outside air into the air duct 11. A filter 12 installed near the blower 5 in the air duct 11 effectively intercepts dust, impurities, and other particulate matter in the air, ensuring the air entering the drying chamber 1 is clean and preventing impurities from contaminating the catalyst. The clean air is directed through the air duct 11 towards the desiccant tank 31, creating forced convection. The flowing air makes full contact with the catalyst surface, accelerating the evaporation of moisture and carrying it away. Meanwhile, the humid air inside the drying chamber 1, under the pressure generated by the blower 5, is exhausted to the outside environment through the exhaust duct 14 via the exhaust fan 13 located inside the drying chamber 1 away from the air duct 11. This creates an airflow circulation within the drying chamber 1, continuously providing a dry air environment for catalyst drying, promptly removing humid air, and further improving drying efficiency and uniformity.

[0050] Throughout the drying process, the components work together. The heating component 4 provides appropriate heat, and the airflow circulation system consisting of the fan 5, air duct 11, filter screen 12, exhaust duct 13 and exhaust pipe 14 accelerates the evaporation and discharge of moisture. The desiccant tank 31 and its related structures ensure that the catalyst is placed stably and that moisture is discharged smoothly. The sealing structure maintains a stable drying environment, thereby completing the pre-drying of the catalyst efficiently and uniformly.

[0051] Finally, it should be noted that the electronic components in the above-mentioned components, such as the electric heating wire 42 in this embodiment, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An experimental catalyst pre-drying apparatus, comprising a drying chamber (1), characterized in that: The drying chamber (1) is equipped with a placement rack (3), on which a desiccant tank (31) is placed. The top of the drying chamber (1) is detachably equipped with a top cover (2), and a heating component (4) is installed on the inner side of the top cover (2). The heating component (4) can adjust its height by lifting and lowering to adjust the effect of heating and drying the catalyst.

2. The experimental catalyst pre-drying apparatus according to claim 1, characterized in that: A duct (11) is installed on one side of the inner wall of the drying chamber (1). A fan (5) is installed at the upper end of the duct (11), and the lower end of the duct (11) is horizontally positioned and directly opposite the desiccant tank (31).

3. The experimental catalyst pre-drying apparatus according to claim 2, characterized in that: A filter screen (12) is installed at the upper end of the air duct (11) near the fan (5).

4. The experimental catalyst pre-drying apparatus according to claim 2, characterized in that: An exhaust duct (13) is installed inside the drying chamber (1) away from the air duct (11), and an exhaust duct (14) is connected to the outer end of the exhaust duct (13).

5. The experimental catalyst pre-drying apparatus according to claim 1, characterized in that: A water-permeable mesh (311) is installed at the bottom of the desiccant tank (31), and the aperture of the water-permeable mesh (311) is smaller than the diameter of the desiccant particles.

6. The experimental catalyst pre-drying apparatus according to claim 1, characterized in that: The bottom of the desiccant tank (31) is equipped with support legs (32).

7. The experimental catalyst pre-drying apparatus according to claim 1, characterized in that: The heating component (4) includes a lifting plate (41), an electric heating wire (42) is installed at the bottom of the lifting plate (41), and threaded rods (43) are vertically installed at the upper part of both ends of the lifting plate (41). The upper end of the threaded rod (43) passes through the top cover (2) and is limited by a limiting nut (44). The limiting nut (44) can be adjusted by turning to adjust the height of the threaded rod (43).

8. The experimental catalyst pre-drying apparatus according to claim 1, characterized in that: A sealing rubber ring is provided at the connection between the top cover (2) and the drying chamber (1).

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