Equipment for preparing and controlling granularity of catalyst for few-walled carbon nanotubes
Through the equipment of two-stage cyclone separation and recharge mechanism, the problem of inaccurate particle size control in catalyst production is solved, and efficient production of carbon nanotubes and environmental improvements are achieved.
Patent Information
- Application Number
- CN202520355566.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The existing carbon nanotube catalysts have complex production processes, long cycles, high energy consumption, lots of waste, and are not economical and environmentally friendly, making it difficult to achieve precise control of catalyst particle size.
Equipment that adopts a two-stage cyclone separation structure and recharge mechanism is used to combine the heating chamber and the cyclone separator to achieve fine grading and reprocessing of the catalyst particles to ensure that the catalyst particle size meets the requirements.
It improves the quality and consistency of carbon nanotubes, reduces production costs, improves production efficiency and energy utilization, and reduces waste emissions.
Smart Images
Figure CN223144736U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catalyst preparation, and particularly relates to a device for preparing and controlling the particle size of catalysts for oligomeric wall carbon nanotubes. Background Art
[0002] The particle size of carbon nanotube catalysts has a significant impact on their performance. The catalyst particle size directly affects its specific surface area, the number and distribution of active sites, and thus affects the efficiency and selectivity of the catalytic reaction. Generally, smaller catalyst particles have a larger specific surface area, can provide more active sites, and thus improve catalytic activity; however, overly small particles are prone to agglomeration, affecting catalytic stability.
[0003] The particle size of carbon nanotube catalysts is usually at the nanoscale. For example, the catalyst particles used in some studies range from a few nanometers to dozens of nanometers, and the specific particle size range can be adjusted according to application requirements. The particle sizes of different types of carbon nanotube catalysts vary. For example, high melting point alloy catalysts (Co-W alloy) have excellent performance in growing carbon nanotubes, but their particle size range and distribution need to be adjusted according to growth conditions and target products.
[0004] Small particle size catalysts (such as nanoscale) have a large specific surface area, many active sites, and high catalytic activity, but are prone to agglomeration, affecting stability. Large particle size catalysts (such as micron scale) have a relatively small specific surface area, but the particle distribution is uniform, not prone to agglomeration, and have relatively high catalytic stability, but may reduce catalytic activity.
[0005] Currently, the preparation of carbon nanotube catalysts mainly uses the co-precipitation method or the hydrothermal method. The obtained catalysts cannot be directly used to prepare carbon nanotubes, and the catalysts used for fluidized bed synthesis of carbon nanotubes require a specific particle size. Therefore, the obtained catalysts need to be post-treated (such as ball milling, crushing, and screening) before they can be used in carbon nanotube production.
[0006] The catalyst solution obtained by the co-precipitation method or the hydrothermal method is filtered to obtain a catalyst filter cake. The filter cake is washed, filtered, dried, and calcined at high temperature, and then kneaded, extruded, crushed, and screened to obtain carbon nanotube catalysts. However, the post-treatment methods of crushing and screening are complex in process, long in cycle, high in equipment requirements, high in energy consumption, and produce a lot of waste, lacking economy and environmental friendliness.
[0007] Therefore, how to provide a device for catalyst particle size that solves the problems of complex catalyst production process, long production cycle, high energy consumption, a lot of waste, uneconomical and environmentally unfriendly in the existing technology has become a technical problem that urgently needs to be solved in this field. Summary of the Utility Model
[0008] The purpose of the present utility model is to provide a device for catalyst particle size that can solve the problems of complex catalyst production process, long production cycle, high energy consumption, a lot of waste, uneconomical and environmentally unfriendly in the existing technology.
[0009] The present utility model provides a device for preparing and controlling the particle size of catalysts for oligomeric wall carbon nanotubes, comprising a device body and a control cabinet. The device body includes a feed bin, a heating chamber, a primary cyclone separator, a return material chamber, a secondary cyclone separator, and a finished product bin;
[0010] The feed bin is arranged above the heating chamber and is used for storing catalyst filter cakes;
[0011] The heating chamber has a structure for mixing the catalyst filter cake with the carrier gas to form a fluidized bed and has a heating function;
[0012] The primary cyclone separator is connected to the upper part of the heating chamber and is used for separating catalyst particles with larger particle sizes;
[0013] The feed inlet of the return material chamber is connected to the discharge end of the larger particle size catalyst particles of the primary cyclone separator, and the discharge outlet of the return material chamber is connected to the heating chamber;
[0014] The feed end of the secondary cyclone separator is connected to the discharge end of the smaller particle size catalyst particles of the primary cyclone separator;
[0015] The finished product bin is connected to the discharge end of the larger particle size catalyst particles of the secondary cyclone separator.
[0016] Optionally, the heating chamber includes a heating gas chamber for providing the carrier gas and a distributor plate for uniformly distributing the carrier gas.
[0017] Optionally, the heating gas chamber is connected with a carrier gas control valve for controlling the flow rate and pressure of the carrier gas.
[0018] Optionally, the feed bin includes a feed bin body, an upper feed valve for controlling the feed of the catalyst filter cake, and a lower feed valve for controlling the entry of the catalyst filter cake into the heating chamber.
[0019] Optionally, the heating chamber further includes a heating chamber vent valve for discharging waste gas.
[0020] Optionally, the primary cyclone separator includes a primary cyclone separator body and a primary cyclone outlet control valve.
[0021] Optionally, the return material chamber includes a return material chamber body, a return material pipe connected to the heating chamber, a return material gas chamber for supplementing gas to the return material chamber, and a return material chamber vent valve connected to the bottom of the return material gas chamber. The return material gas chamber is connected with a gas supplement valve.
[0022] Optionally, the secondary cyclone separator includes a secondary cyclone separator body, a secondary cyclone outlet control valve connected to the discharge end of the smaller particle size catalyst particles of the secondary cyclone separator, and a secondary cyclone discharge valve connected to the discharge end of the larger particle size catalyst particles of the secondary cyclone separator.
[0023] Optionally, the finished product bin includes a finished product bin body, a finished product bin discharge valve provided at the bottom of the finished product bin, and a finished product bin balance pipe. The two ends of the finished product bin balance pipe are respectively connected to the finished product bin and the evacuation pipe, and a finished product bin balance valve for balancing pressure is provided on the finished product bin balance pipe.
[0024] Optionally, the control cabinet includes a heating chamber control cabinet for controlling the heating chamber and a cyclone control cabinet for controlling the first-stage cyclone separator and the second-stage cyclone separator.
[0025] According to the technical content disclosed by the present utility model, the following beneficial effects are achieved:
[0026] The equipment for preparing and controlling the particle size of the catalyst for oligomeric wall carbon nanotubes provided by the present utility model adopts a two-stage cyclone separation structure, which can finely classify the catalyst particles, and through a return material mechanism, the particles that do not meet the particle size requirements are sent back to the heating chamber for reprocessing, thereby precisely controlling the particle size of the final product and improving the quality and consistency of the carbon nanotubes.
[0027] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. Description of the Drawings
[0028] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.
[0029] Figure 1 It is a structural diagram of the equipment for preparing and controlling the particle size of the catalyst for oligomeric wall carbon nanotubes of the present utility model.
[0030] Figure 2 It is a schematic diagram of the equipment body and the control cabinet of the present utility model;
[0031] Figure 3 It is a schematic diagram of the heating chamber control cabinet and a part of the equipment body of the present utility model;
[0032] Figure 4 It is a schematic diagram of the cyclone control cabinet and a part of the equipment body of the present utility model.
[0033] Explanation of the reference numerals: 10, upper valve of silo; 11, silo; 12, lower valve of silo; 13, heating chamber; 14, air distribution plate; 15, vent valve of heating chamber; 16, carrier gas control valve; 17, heating air chamber; 18, return pipe; 19, vent valve of return chamber; 20, air supply valve; 21, return air chamber; 22, return chamber; 23, first-stage cyclone separator; 24, first-stage cyclone central pipe; 25, first-stage cyclone outlet control valve; 26, second-stage cyclone separator; 27, second-stage cyclone discharge valve; 28, finished product silo; 29, second-stage cyclone central pipe; 30, second-stage cyclone outlet control valve; 31, finished product silo discharge valve; 32. Balance valve for finished product warehouse; 33. Balance pipe for finished product warehouse; 34. Exhaust pipe; 35. Support for heating chamber; 36. Material metering area for heating chamber; 37. Temperature control area for heating chamber; 38. Control cabinet for heating chamber; 39. Base for heating chamber; 40. Lower hinge for heating chamber; 41. Heating and heating zone for heating chamber; 42. Upper hinge for heating chamber; 43. Upper hinge for first-stage cyclone; 44. Heating and heating zone for first-stage cyclone; 45. Lower hinge for first-stage cyclone; 46. Base for first-stage and second-stage cyclones; 47. Cyclone control cabinet; 48. Temperature control area for first-stage and second-stage cyclones; 49. Material metering area for first-stage and second-stage cyclones; 50. Support for first-stage cyclone. DETAILED DESCRIPTION
[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.
[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.
[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0037] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0039] like Figures 1-4 As shown, the utility model discloses a device for preparing and controlling the particle size of catalyst for oligo-walled carbon nanotubes, comprising a device body and a control cabinet.
[0040] The equipment provided by the utility model mainly consists of a bin 11, a heating chamber 13, a primary cyclone separator 23, a return material chamber 22, a secondary cyclone separator 26, a finished product bin 28, and a corresponding control system. Its working principle is as follows: The catalyst filter cake enters the heating chamber 13 from the bin 11, and is mixed with the carrier gas in the heating chamber 13 to form a fluidized bed and undergoes heat treatment. The treated catalyst enters the primary cyclone separator 23 for particle size separation. Larger particle size catalyst particles are separated and enter the return material chamber 22, and then return to the heating chamber 13 for further treatment; smaller particle size catalyst particles enter the secondary cyclone separator 26 for further separation. Catalyst particles meeting the particle size requirements enter the finished product bin 28, and the remaining particles are discharged.
[0041] The structures, functions, and beneficial effects of each component of the equipment are as follows:
[0042] The bin 11 is located at the top of the equipment and is used to store the catalyst filter cake. The bin 11 includes a bin body, an upper bin valve 10, and a lower bin valve 12. The upper bin valve 10 is used to control the addition of the catalyst filter cake into the bin 11, and the lower bin valve 12 is used to control the catalyst filter cake to enter the lower heating chamber 13 at an appropriate speed. The design of the bin 11 ensures the stable and continuous supply of the catalyst filter cake, which is the basis for the continuous production of the equipment.
[0043] The heating chamber 13 is located below the bin 11 and is one of the core components of the equipment. A wind distribution plate 14 is provided at the bottom inside the heating chamber 13. The bottom of the heating chamber 13 is connected to a heating gas chamber 17, and the heating gas chamber 17 is connected to an external carrier gas source (such as nitrogen, argon, etc.) through a carrier gas inlet pipe and a carrier gas control valve 16, and is used to provide high-temperature carrier gas (usually an inert gas). The function of the wind distribution plate 14 is to evenly distribute the carrier gas and fully mix it with the catalyst filter cake falling from the lower bin valve 12 to form a fluidized bed. In the fluidized bed, the catalyst filter cake is heated, crushed, and dried. The heating chamber 13 is also provided with a heating chamber vent valve 15, which is used to discharge the substances inside the heating chamber 13. The design of the heating chamber 13 realizes the uniform heating, crushing, and drying of the catalyst filter cake, providing conditions for subsequent particle size separation. The formation of the fluidized bed improves the heat transfer and mass transfer efficiency and shortens the processing time.
[0044] The primary cyclone separator 23 is connected to the upper middle part of the heating chamber 13, and uses centrifugal force to preliminarily separate the catalyst particles after being treated in the heating chamber 13. The primary cyclone separator 23 includes a primary cyclone separator body and a primary cyclone outlet control valve 25. The discharge end of the smaller particle size catalyst particles of the primary cyclone separator 23 is a primary cyclone central pipe 24 (see Figure 1), which is connected to the feed end of the secondary cyclone separator 26. The discharge end of the larger particle size catalyst particles of the primary cyclone separator 23 is located at its bottom and is connected to the feed port of the return chamber 22. Under the action of centrifugal force, the larger particle size catalyst particles are thrown towards the separator wall and descend along the wall surface, eventually falling into the return chamber 22; the smaller particle size catalyst particles are discharged from the primary cyclone central tube 24 and enter the secondary cyclone separator 26 along with the gas flow. The primary cyclone separator 23 realizes the preliminary classification of catalyst particles, separates the larger particle size particles, prepares for recycling treatment, and improves the utilization rate of the catalyst.
[0045] The return chamber 22 is located below the primary cyclone separator 23. Its feed port is connected to the discharge end of the larger particle size catalyst particles of the primary cyclone separator 23, and receives the larger particle size catalyst particles separated from the primary cyclone separator 23. The discharge port of the return chamber 22 is connected to the heating chamber 13 through the return pipe 18. The return pipe 18 is inclined, with the end connected to the return chamber 22 being higher and the end connected to the heating chamber 13 being lower. The return chamber 22 includes a return chamber body, a return gas chamber 21, and a return chamber vent valve 19. The return gas chamber 21 is located below the return chamber 22, and its internal space is communicated with the return chamber 22. The return gas chamber 21 is connected with a make-up gas valve 20 for supplementing a small amount of gas (usually the same as the carrier gas) into the return chamber 22 and the return gas chamber 21. The function of this part of the supplementary gas is to provide an upward thrust to assist the larger particle size catalyst particles to overcome gravity and resistance and smoothly return to the heating chamber 13 through the return pipe 18 for re-crushing and drying. The return chamber vent valve 19 is connected to the bottom of the return gas chamber 21 and is used to discharge the excess gas, particles in the return chamber 22 and the return gas chamber 21 or for maintenance. The design of the return chamber 22 realizes the recycling treatment of the larger particle size catalyst particles, avoids waste, improves the overall utilization rate of the catalyst, and reduces the production cost.
[0046] The secondary cyclone separator 26 is connected to the primary cyclone central tube 24 (the discharge end of the smaller particle size catalyst particles) of the primary cyclone separator 23, receives the smaller particle size catalyst particles and the carrier gas from the primary cyclone separator 23, and performs a more refined particle size separation. The primary cyclone outlet control valve 25 is arranged on the primary cyclone central tube 24 to control the on-off of the pipeline. The secondary cyclone separator 26 includes a secondary cyclone separator body, a secondary cyclone outlet control valve 30, and a secondary cyclone discharge valve 27. The discharge end of the smaller particle size catalyst particles of the secondary cyclone separator 26 is the secondary cyclone central tube 29 (see Figure 1) It is connected to the evacuation pipe 34 and is used to discharge overly fine catalyst particles that do not meet the requirements. The discharge end of the larger particle size catalyst particles of the secondary cyclone separator 26 (i.e., the discharge port of the catalyst particles with the required particle size) is located at its bottom and is connected to the finished product bin 28 through the secondary cyclone discharge valve 27. The secondary cyclone outlet control valve 30 is arranged at the discharge end of the smaller particle size catalyst particles of the secondary cyclone separator 26 (the secondary cyclone central pipe 29) and is used to control the operating parameters of the secondary cyclone separator 26. The secondary cyclone separator 26 realizes the fine classification of catalyst particles, ensures that the particle size of the final product meets the requirements, and improves the growth quality of carbon nanotubes.
[0047] The finished product bin 28 is located below the secondary cyclone separator 26 and is used to collect the catalyst particles that have been separated by the secondary cyclone separator 26 and meet the particle size requirements. The finished product bin 28 includes a finished product bin body, a finished product bin discharge valve 31 arranged at the bottom of the finished product bin 28, and a finished product bin balance pipe 33. The two ends of the finished product bin balance pipe 33 are respectively connected to the top of the finished product bin 28 and the middle of the evacuation pipe 34. A finished product bin balance valve 32 for balancing the pressure inside and outside the finished product bin 28 is arranged on the finished product bin balance pipe 33. The finished product bin discharge valve 31 is used to control the discharge of the finished catalyst. The finished product bin 28 provides a storage space for qualified catalyst products and the products can be conveniently taken out through the finished product bin discharge valve 31. The design of the finished product bin balance pipe 33 and the finished product bin balance valve 32 ensures the pressure balance inside and outside the finished product bin 28 and avoids material flow problems caused by pressure differences.
[0048] As Figure 2 and Figure 3 shown, the control cabinet includes:
[0049] The heating chamber control cabinet 38 is used to control parameters such as the temperature and carrier gas flow rate of the heating chamber 13. By precisely controlling the temperature and carrier gas flow rate of the heating chamber 13, the crushing, drying degree and fluidization state of the catalyst cake can be controlled, thereby affecting the particle size of the final product.
[0050] Specifically, the heating chamber control cabinet 38 is used to control the operating parameters of the heating chamber 13, and its internal structure includes: a heating chamber base 39 for supporting the entire heating chamber control cabinet; a heating chamber support column 35 connecting the heating chamber base 39 and the heating chamber 13; a heating chamber material metering area 36 for monitoring and controlling the amount of material entering the heating chamber 13; a heating chamber temperature control area 37 for monitoring and controlling the temperature of the heating chamber 13; a heating chamber heating and warming area 41 provided with electric heating furnace wires and heat insulation materials to provide heat for the heating chamber 13; a heating chamber upper hinge 42 and a heating chamber lower hinge 40 for opening and closing the door or cover of the heating chamber control cabinet to facilitate maintenance and repair.
[0051] As Figure 4As shown, the cyclone control cabinet 47 is used to control the operating parameters of the primary cyclone separator 23 and the secondary cyclone separator 26, such as the opening degree of the air supplement valve 20, the opening degree of the secondary cyclone outlet control valve 30, the opening degree of the primary cyclone outlet control valve 25, and the opening degrees of other valves. By adjusting these parameters, the separation efficiency of the cyclone separator can be controlled, thereby affecting the particle size distribution of the final product.
[0052] Specifically, the cyclone control cabinet 47 is used to control the various operating parameters of the primary cyclone separator 23 and the secondary cyclone separator 26. Its internal structure includes: the primary and secondary cyclone base 46, which is used to support the entire cyclone control cabinet; the primary cyclone pillar 50, which connects the primary and secondary cyclone base 46 and the primary cyclone separator 23; the primary and secondary cyclone material metering area 49, which is used to monitor and control the material flow of the cyclone separator; the primary and secondary cyclone temperature control area 48, which is used to monitor and control the temperature of the cyclone separator; the primary cyclone heating and temperature rising area 44, which is provided with heating furnace wires and thermal insulation materials to provide heat for the cyclone separator (if required); the primary cyclone upper hinge 43 and the primary cyclone lower hinge 45, which are used to open and close the door or cover of the cyclone control cabinet for convenient maintenance and repair.
[0053] Working process:
[0054] The catalyst filter cake is added to the feed bin 11 through the feed bin upper valve 10.
[0055] Carrier gas (usually an inert gas such as nitrogen or argon) is introduced into the heating gas chamber 17 through the carrier gas control valve 16, and an upward air flow is established in the heating chamber 13.
[0056] The heating chamber 13 and the primary and secondary cyclone separators are heated respectively through the heating chamber control cabinet 38 and the cyclone control cabinet 47 to reach the temperature required by the process.
[0057] Open the feed bin lower valve 12, and the catalyst filter cake falls into the heating chamber 13 under the action of gravity.
[0058] In the heating chamber 13, the catalyst filter cake is fully mixed with the high-temperature carrier gas, the filter cake is broken up, crushed, dried, and a fluidized bed layer is formed above the air distribution plate 14.
[0059] The broken and dried catalyst particles rise with the carrier gas and enter the primary cyclone separator 23.
[0060] In the primary cyclone separator 23, the catalyst particles with larger particle sizes are separated under the action of centrifugal force and fall into the return chamber 22.
[0061] In the return chamber 22, a small amount of gas is supplemented through the air supplement valve 20 to assist the catalyst particles with larger particle sizes to return to the heating chamber 13 through the return pipe 18 for re-crushing and drying.
[0062] Catalyst particles with a smaller particle size enter the secondary cyclone separator 26 through the central pipe 24 of the primary cyclone along with the carrier gas.
[0063] Within the secondary cyclone separator 26, the catalyst particles meeting the particle size requirements are separated and enter the finished product bin 28 through the secondary cyclone discharge valve 27.
[0064] Overly fine catalyst particles that do not meet the requirements enter the exhaust pipe 34 for discharge along with the carrier gas through the central pipe 29 of the secondary cyclone.
[0065] By adjusting parameters such as the carrier gas flow rate, heating temperature, make-up gas volume, and the opening degrees of each control valve, the final particle size of the catalyst can be precisely controlled.
[0066] Advantages of the present utility model:
[0067] The equipment provided by the present utility model can precisely control the catalyst particle size through multi-stage cyclone separation and the return material mechanism, improve the quality and production efficiency of carbon nanotubes, reduce production costs, and has significant economic and social benefits. Specifically:
[0068] Precise particle size control: The design of the two-stage cyclone separator and the return material mechanism ensure precise controllability of the catalyst particle size.
[0069] High production efficiency: The continuous production process avoids the drawbacks of traditional batch production.
[0070] Low energy consumption and environmental protection: The optimized heating chamber structure and return material mechanism improve energy utilization efficiency and reduce waste emissions.
[0071] High degree of automation: The setting of the control cabinet realizes the automatic control of the equipment, reduces labor costs, and improves production stability.
[0072] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.
Claims
1. An apparatus for preparing and controlling the particle size of a catalyst for oligomeric wall carbon nanotubes, comprising an apparatus body and a control cabinet, characterized in that: The equipment body includes a feed bin, a heating chamber, a primary cyclone separator, a return material chamber, a secondary cyclone separator, and a finished product bin; The feed bin is arranged above the heating chamber and is used for storing catalyst filter cakes; The heating chamber has a structure for mixing the catalyst filter cakes with the carrier gas to form a fluidized bed and has a heating function; The primary cyclone separator is connected to the upper part of the heating chamber and is used for separating catalyst particles with larger particle sizes; The feed inlet of the return material chamber is connected to the discharge end of the larger particle size catalyst particles of the primary cyclone separator, and the discharge outlet of the return material chamber is connected to the heating chamber; The feed end of the secondary cyclone separator is connected to the discharge end of the smaller particle size catalyst particles of the primary cyclone separator; The finished product bin is connected to the discharge end of the larger particle size catalyst particles of the secondary cyclone separator.
2. The device according to claim 1, characterized in that, The heating chamber includes a heating gas chamber for providing the carrier gas and a distributor plate for uniformly distributing the carrier gas.
3. The device according to claim 2, wherein, The heating gas chamber is connected with a carrier gas control valve for controlling the flow rate and pressure of the carrier gas.
4. The device according to any one of claims 1 to 3, characterized in that The feed bin includes a feed bin body, an upper feed bin valve for controlling the feeding of the catalyst filter cakes, and a lower feed bin valve for controlling the catalyst filter cakes to enter the heating chamber.
5. The device according to any one of claims 1 to 3, characterized in that, The heating chamber further includes a heating chamber vent valve for discharging waste gas.
6. The device according to any one of claims 1 to 3, characterized in that, The primary cyclone separator includes a primary cyclone separator body and a primary cyclone outlet control valve.
7. The device according to any one of claims 1 to 3, characterized in that, The return material chamber includes a return material chamber body, a return pipe connected to the heating chamber, a return gas chamber for supplementing gas to the return material chamber, and a return material chamber vent valve connected to the bottom of the return gas chamber. The return gas chamber is connected with a gas supplement valve.
8. The device according to any one of claims 1 to 3, characterized in that The secondary cyclone separator includes a secondary cyclone separator body, a secondary cyclone outlet control valve connected to the discharge end of the smaller particle size catalyst particles of the secondary cyclone separator, and a secondary cyclone discharge valve connected to the discharge end of the larger particle size catalyst particles of the secondary cyclone separator.
9. The device according to any one of claims 1 to 3, characterized in that, The finished product bin includes a finished product bin body, a finished product bin discharge valve arranged at the bottom of the finished product bin, and a finished product bin balance pipe. Both ends of the finished product bin balance pipe are respectively connected to the finished product bin and the drain pipe, and a finished product bin balance valve for balancing pressure is arranged on the finished product bin balance pipe.
10. The device according to any one of claims 1 to 3, characterized in that The control cabinet includes a heating chamber control cabinet for controlling the heating chamber and a cyclone control cabinet for controlling the primary cyclone separator and the secondary cyclone separator.