Micro-channel reactor with height-adjustable tray
By designing a microchannel reactor with adjustable pallet height, the problem of large bottom dead volumes and inability to adjust the position of the catalyst pallets in the existing reactors is solved, and the catalyst efficiency is improved and the bottom dead volume is reduced, adapting to the constant temperature zone of different heat storage furnaces.
Patent Information
- Application Number
- CN202422023792.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing microchannel reactors have problems such as large dead volume at the bottom and carbonization of materials in the dead volume. The position of the catalyst pallet cannot be adjusted, resulting in unstable catalytic efficiency and different constant temperature zones of different heat storage furnaces, which makes the catalyst pallet not universal.
A microchannel reactor with adjustable tray height is designed. By setting the top cover screw hole in the top cover of the reactor cavity and connecting it with the thermometer conduit through threads. The lower end of the thermometer conduit is fixedly connected with a catalyst tray. A temperature measurement component is installed inside the thermometer conduit, allowing the height of the catalyst tray and the thermometer to be adjusted by rotation, adapt to the constant temperature zone of different heat storage furnaces, and reducing the bottom dead volume through the discharge port.
The height adjustable catalyst tray is achieved, adapted to the constant temperature zones of different heat storage furnaces, improved catalyst efficiency, reduced bottom dead volume, avoided carbonized coking of materials, and the catalyst tray is detachable, solving the coking problem.
Smart Images
Figure CN222998762U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catalytic reactions, and particularly relates to a microchannel reactor with adjustable tray height. Background Art
[0002] The fixed-bed microchannel reactor is one of the commonly used reactors in the catalytic field. Currently, the reactors used in laboratories are relatively small. For example, the inner diameter of some microchannel reactors is about 2 cm, and the height is about 30 cm.
[0003] The structure of the current microchannel reactors used in laboratories is unreasonable, which is prone to blockage inside the reactor, and the catalysts used are also not easy to load. The bottom of some reactors is fixedly provided with a thermometer or other devices, resulting in a large dead volume at the bottom of the reactor and carbonization and coking of the materials in the dead volume, leading to large errors in experimental results.
[0004] During the R & D process, the process is also adjusted relatively frequently, and the catalyst loading amount also changes with the process adjustment. Different catalyst loading amounts and different temperature zones where the catalyst tray is located will also bring different catalytic efficiencies. Moreover, the constant temperature zone corresponding to a single regenerative furnace is also fixed, and there are differences in the constant temperature zones of different regenerative furnaces. Therefore, the currently fixed-position catalyst trays cannot be used interchangeably in different experiments. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a microchannel reactor with adjustable tray height to solve the problems of large dead volume at the bottom of the current reactor, carbonization and coking of the materials in the dead volume, different constant temperature zones of different regenerative furnaces, and the inability to adjust the position of the catalyst tray.
[0006] To solve the above technical problems, the utility model provides a microchannel reactor with adjustable tray height, which includes a reactor cavity. The upper part of the reactor cavity is detachably connected with a cavity top cover. A top cover screw hole is provided in the middle of the cavity top cover. The top cover screw hole is threadedly connected with a thermometer conduit. The lower end of the thermometer conduit is fixedly connected with a catalyst tray. A temperature measurement component is also arranged inside the thermometer conduit. An outlet is arranged at the bottom of the reactor cavity.
[0007] Further, a feed inlet is also arranged on the side wall of the reactor cavity.
[0008] Further, the inner wall of the reactor cavity is provided with threads, and the cavity top cover is threadedly connected with the reactor cavity. When adding materials and / or air, the cavity top cover is rotated above the feed inlet.
[0009] Further, the fixed position of the cavity top cover and the reactor cavity is constant, and the feed inlet is located below the fixed position of the cavity top cover.
[0010] Furthermore, there is a notch near the fixed position of the catalyst tray on the thermometer conduit.
[0011] Furthermore, the catalyst tray is a circular mesh structure.
[0012] Furthermore, a conduit rotating handle is provided at the top of the thermometer conduit, and the conduit rotating handle is fixedly connected to the thermometer conduit.
[0013] Furthermore, an openable thermometer cover is provided in the middle of the conduit rotating handle; after the thermometer cover is opened, the temperature measurement component can be taken out or put into the thermometer conduit.
[0014] Furthermore, a top cover handle is provided on one side of the cavity top cover away from the catalyst tray.
[0015] Furthermore, the discharge port is also connected to a discharge valve through a pipeline.
[0016] The beneficial effects of a microchannel reactor with adjustable tray height provided by the present utility model are as follows: Compared with the prior art, a reactor cavity top cover is designed. There are top cover screw holes in the middle of the reactor cavity. The top cover screw holes are threadedly connected with a thermometer conduit. The lower end of the thermometer conduit is fixedly connected with a catalyst tray, and a thermometer is also provided inside the thermometer conduit. The threadedly connected thermometer conduit can adjust the heights of the catalyst tray and the thermometer in the microchannel reactor by rotation, so as to find the constant temperature zones of different regenerators through the temperature values of the thermometer, thereby adjusting the catalyst tray to the constant temperature zone, and it is also possible to adjust the height of the catalyst tray according to different amounts of catalyst to improve the catalyst efficiency. At the same time, the catalyst tray can be disassembled to eliminate the problem of catalyst coking on the catalyst tray. Since the thermometer is arranged on the reactor cavity top cover, a discharge port can be arranged at the bottom of the microchannel reactor, thereby reducing the bottom dead volume and avoiding carbonization and coking of the materials in the dead volume. Description of the Drawings
[0017] Figure 1 It is an overall schematic diagram of a microchannel reactor with adjustable tray height;
[0018] Figure 2 It is a top view schematic diagram in the state where the thermometer conduit is not installed on the cavity top cover;
[0019] Figure 3 It is a top view schematic diagram in the state where the thermometer conduit is installed on the cavity top cover. Detailed Description of the Invention
[0020] In order to better understand the purpose, structure and function of the present utility model, the following will Figures 1 to 3 make a further detailed description of a microchannel reactor with adjustable tray height of the present utility model in conjunction with the attached
[0021] As Figure 1 and Figure 2 shown, a microchannel reactor with adjustable tray height according to an embodiment of the present utility model includes a reactor cavity 1, and the reactor cavity 1 is in a hollow cylindrical shape. A cavity top cover 2 is detachably connected to the upper part of the reactor cavity 1, and a top cover screw hole 21 is provided in the middle of the cavity top cover 2.
[0022] In the present utility model, the top cover screw hole 21 is threadedly connected to a thermometer conduit 3, and a catalyst tray 4 is fixedly connected to the lower end of the thermometer conduit 3. The catalyst tray 4 is in a circular mesh structure.
[0023] It can be understood that a temperature measurement component 5 is further provided inside the thermometer conduit 3, and a discharge port 7 is provided at the bottom of the reactor cavity 1. An inlet port 6 is further provided on the side wall of the reactor cavity 1. When adding materials and / or air, the cavity top cover 2 is located above the inlet port 6.
[0024] When used in a laboratory, the cavity top cover 2 is removed, the cavity top cover 2 and the thermometer conduit 3 are taken out, the catalyst is placed on the catalyst tray 4, and then the combination of the cavity top cover 2 and the thermometer conduit 3 is placed into the reactor cavity 1, and the cavity top cover 2 is fixed.
[0025] A regenerative furnace is used to heat the microchannel reactor, and the constant temperature regions of different regenerative furnaces are different, so that the effective catalytic region of the catalyst in the microchannel reactor will be different with different regenerative furnaces. Moreover, the catalyst loading amount will also be adjusted according to the process adjustment, and the effective catalytic regions of different amounts of catalysts are also different.
[0026] Therefore, after the process adjustment or the regenerative furnace adjustment, it is necessary to adjust the height position of the catalyst tray 4 in the reactor cavity 1. The thermometer conduit 3 and the cavity top cover 2 are threadedly connected, and during the experiment, the lifting of the catalyst tray 4 can be controlled by rotating the thermometer conduit 3. Moreover, a temperature measurement component 5 is further provided in the thermometer conduit 3. During the catalytic process, the height of the catalyst tray 4 can be adjusted according to the temperature data of the temperature measurement component 5, and the constant temperature region of the current regenerative furnace can be found according to the temperature data of the temperature measurement component 5, and the catalyst tray 4 can be adjusted to this region.
[0027] In the present utility model, a discharge port 7 is provided at the bottom of the reactor cavity 1, and the materials discharged from the catalytic reaction can be discharged into the reactor cavity 1 through the discharge port 7, thereby avoiding the occurrence of dead volume at the bottom and avoiding the carbonization and coking of the materials in the dead volume.
[0028] If coking is found on the tray during the experiment, air can also be introduced into the reactor cavity 1 through the feed port 6 to vaporize and eliminate the coking on the tray. If there is still unvaporized coking left, the catalyst tray 4 can be cleaned in the reactor cavity 1 by removing the cavity top cover 2, the thermometer conduit 3 and the combination body.
[0029] In one embodiment, the fixed position of the cavity top cover 2 and the reactor cavity 1 is constant.
[0030] In another embodiment, the inner wall of the reactor cavity 1 is provided with threads, and the cavity top cover 2 and the reactor cavity 1 are connected by threads. When adding materials and / or air, the cavity top cover 2 rotates above the feed port 6. This threaded connection method can make the lifting range of the catalyst tray 4 larger.
[0031] As Figure 3 shown, a conduit rotating handle 31 is provided at the top of the thermometer conduit 3, and the conduit rotating handle 31 is fixedly connected to the thermometer conduit 3. This design can make the rotation of the thermometer conduit 3 more convenient. An openable thermometer cover 32 is provided in the middle of the conduit rotating handle 31; after the thermometer cover 32 is opened, the temperature measuring component 5 can be taken out or put into the thermometer conduit 3. This design can replace the temperature measuring component 5 with a more accurate temperature measuring component 5.
[0032] As Figure 1 and Figure 2 shown, it can be understood that a top cover handle 22 is provided on the side of the cavity top cover 2 away from the catalyst tray 4, and the top cover handle 22 can facilitate the operator to disassemble or rotate the cavity top cover 2.
[0033] In one embodiment, the discharge port 7 is also connected with a discharge valve 8 through a pipeline, and the operator can control the discharge speed by controlling the opening and closing degree of the discharge valve 8.
[0034] There is a notch near the fixed position of the thermometer conduit and the catalyst tray, so that the temperature measuring component 5 can directly contact the gas at the catalyst reaction site. This design can make the temperature measurement more accurate.
[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A microchannel reactor with adjustable tray height, characterized in that: The invention comprises a reactor cavity (1), the upper part of the reactor cavity (1) is detachably connected to a cavity top cover (2), a top cover screw hole (21) is provided in the middle of the cavity top cover (2), the top cover screw hole (21) is connected to a thermometer tube (3) by a thread, the lower end of the thermometer tube (3) is fixedly connected to a catalyst tray (4), a temperature measurement component (5) is further provided inside the thermometer tube (3), and a discharge port (7) is provided at the bottom of the reactor cavity (1).
2. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: A material inlet (6) is also provided on the side wall of the reactor cavity (1).
3. The microchannel reactor with adjustable tray height according to claim 2, characterized in that: The inner wall of the reactor cavity (1) is provided with threads, and the cavity top cover (2) is connected to the reactor cavity (1) via threads. When adding materials and / or air, the cavity top cover (2) is rotated to above the feed port (6).
4. The microchannel reactor with adjustable tray height according to claim 2, characterized in that: The fixed positions of the cavity top cover (2) and the reactor cavity (1) are constant, and the feed inlet (6) is located below the fixed position of the cavity top cover (2).
5. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: A notch is provided on the thermometer conduit (3) near the position where the catalyst tray (4) is fixed.
6. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: The catalyst tray (4) is a mesh structure.
7. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: A catheter rotating handle (31) is provided at the top of the thermometer catheter (3), and the catheter rotating handle (31) is fixedly connected to the thermometer catheter (3).
8. The microchannel reactor with adjustable tray height according to claim 7, characterized in that: An openable thermometer cover (32) is provided in the middle of the catheter rotating handle (31); after the thermometer cover (32) is opened, the temperature measurement component (5) can be taken out or put into the thermometer catheter (3).
9. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: A top cover handle (22) is provided on a side of the cavity top cover (2) away from the catalyst tray (4).
10. The microchannel reactor with adjustable tray height according to claim 1, characterized in that: The discharge port (7) is also connected to a discharge valve (8) via a pipeline.