A high temperature calcination rotary kiln for preparing catalyst

Abstract

The utility model relates to catalyst preparation equipment technical field discloses a kind of high-temperature calcination rotary furnace of catalyst preparation, including rack, grading mechanism and protection mechanism, grading mechanism is equipped with multiple side-by-side roller and heat insulation plate, to realize the chamber synchronization calcination of multiple materials, protection mechanism is equipped with the heat preservation sleeve rotatable about guide shaft, to cover in the roller outer wall and carry out heat preservation when calcining.The utility model solves the problem of low production efficiency and serious heat loss in the prior art rotary kiln through the synergistic effect of grading mechanism and protection mechanism, has the beneficial effects of simultaneous processing of multiple materials, significantly improving production efficiency, effectively reducing heat loss, improving energy utilization.

Description

Technical Field

[0001] This utility model relates to the field of catalyst preparation equipment technology, and in particular to a high-temperature calcination rotary furnace for preparing catalysts. Background Technology

[0002] Catalysts play a crucial role in modern chemical industry, and their performance directly affects the efficiency of chemical reactions and the selectivity of products. In the catalyst preparation process, high-temperature calcination is a key step to achieve the thermal decomposition of precursors, crystal transformation, or solidification of active components. Rotary kilns, as a widely used dynamic calcination device, continuously tumble the internal materials through the rotation of the cylinder, thereby achieving uniform heating of the materials.

[0003] Existing rotary kilns are typically designed as a single calcining cylinder structure. This structure is mainly suitable for processing single-variety, large-volume materials. However, in the catalyst development stage or in small-batch, multi-variety production scenarios for specific applications, it is necessary to process multiple materials with different formulations simultaneously. Using a traditional single-cylinder rotary kiln requires batch processing, and each time the material is changed, the kiln must be shut down, cleaned, and reheated. This not only extends the production cycle but also significantly reduces equipment utilization and overall work efficiency.

[0004] Furthermore, the calcination process of the catalyst needs to be carried out in a high-temperature environment. The outer wall of the existing rotary kiln is usually directly exposed to the working environment. Due to the huge temperature difference between the inside and outside of the kiln, a large amount of heat energy is lost from the outer surface of the kiln through thermal radiation and thermal convection. This continuous heat loss not only wastes energy and increases production costs, but also has an adverse effect on the precise control and stability of the temperature inside the kiln, thereby affecting the final quality of the catalyst product.

[0005] Therefore, this invention proposes a high-temperature calcination rotary furnace for preparing catalysts to overcome the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems existing in the high-temperature calcination rotary kiln for catalyst preparation, such as the inability to process multiple materials simultaneously due to its single structural function, low production efficiency, and serious heat loss and low energy utilization during calcination due to the lack of heat insulation structure, this utility model aims to provide a high-temperature calcination rotary kiln for catalyst preparation with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a high-temperature calcination rotary furnace for preparing catalysts, including: a frame, a grading mechanism disposed on the frame, and a side plate fixed to one side of the frame. The grading mechanism includes a heater disposed at the bottom and a roller rotatably connected to the top of the heater; and a protective mechanism.

[0008] The protective mechanism includes a guide shaft, a second rotating shaft mounted on the guide shaft, and a heat-insulating sleeve fixed on the second rotating shaft. The inner wall of the heat-insulating sleeve is provided with a heat-insulating layer, and the top of the heat-insulating sleeve is provided with a handle. The top of the roller is provided with a cover plate, and the cover plate is provided with an observation window.

[0009] Furthermore, the guide shaft is horizontally mounted on the side plate, allowing the insulation sleeve to rotatably cover the outer wall of the drum; the cover plate is connected to the drum in an openable and closable manner via hinges and buckles.

[0010] Preferably, the grading mechanism includes at least two rollers arranged side by side, and an insulation plate is fixed between two adjacent rollers.

[0011] Preferably, the grading mechanism further includes a rotating shaft spanning the frame, with both sides of the roller rotatably supported on the rotating shaft.

[0012] Furthermore, the heating machine drives the drum to rotate synchronously around the axis of the rotating shaft.

[0013] Preferably, the grading mechanism has an operating table on the front side of the heating machine.

[0014] Preferably, the protective mechanism further includes a stabilizing shaft, and the two ends of the guide shaft are fixed between the side plates by the stabilizing shaft.

[0015] In one specific implementation, the handle is fixedly connected to the front side of the top of the insulation sleeve.

[0016] Preferably, the second rotating shaft is located at the bottom end of the insulation sleeve.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem that the rotary kiln can only process one type of material at a time, resulting in low production efficiency and inability to meet the needs of simultaneous processing of multiple materials. By setting up a grading mechanism consisting of multiple parallel rollers and insulation plates, it achieves the effect of simultaneous and separate calcination of multiple different materials, significantly improving production efficiency and ensuring product purity.

[0018] 2. This utility model, by setting an openable protective mechanism, can effectively wrap the roller with its heat insulation sleeve and built-in heat insulation layer, which greatly reduces heat loss during the calcination process, improves energy utilization, reduces operating costs, and achieves efficient heat preservation, energy saving and consumption reduction.

[0019] 3. This utility model achieves stable rotation of the insulation sleeve via a guide shaft and a rotating shaft, allowing for easy opening and closing. The drum cover design facilitates both sealing and observation. The overall structure is compact, rational, convenient to operate, and highly practical. 2. This utility model, by incorporating an insulation sleeve that rotates around a guide shaft to cover the outer wall of the drum, and with an insulation layer on the inner wall of the insulation sleeve, solves the problem of significant heat loss and low energy utilization in existing calcination equipment. It effectively reduces heat loss to the outside during calcination, significantly improves the equipment's thermal efficiency, saves energy, and helps maintain stable process temperatures. Attached Figure Description

[0020] Figure 1 This is a perspective view of a high-temperature calcination rotary furnace for preparing catalysts according to the present invention. Figure 2 This is a front view of a high-temperature calcination rotary furnace for preparing catalysts according to this utility model. Figure 3 This is a schematic diagram of the classification mechanism of a high-temperature calcination rotary furnace for preparing catalysts according to this utility model. Figure 4 This is a schematic diagram of the protective mechanism of a high-temperature calcination rotary furnace for preparing catalysts, as proposed in this utility model.

[0021] Legend: 1. Frame; 2. Grading mechanism; 21. Heating machine; 22. Operating table; 23. Roller; 24. Rotating shaft one; 25. Cover plate; 26. Hinge; 27. Pull buckle; 28. Observation window; 29. ​​Insulation board; 3. Protective mechanism; 31. Guide shaft; 32. Stabilizing shaft; 33. Rotating shaft two; 34. Insulation sleeve; 35. Handle; 36. Insulation layer; 4. Side plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a high-temperature calcination rotary kiln for preparing catalysts, which aims to solve the problems of low efficiency caused by the fact that rotary kilns can only calcine one type of material at a time in the prior art, and that the serious heat loss during the calcination process results in low energy utilization.

[0024] like Figure 1 and Figure 2 As shown, a high-temperature calcination rotary furnace for preparing catalysts includes a frame 1 as the overall supporting foundation and a grading mechanism 2 mounted on the frame 1. A side plate 4 is fixed to one side of the frame 1, and a protective mechanism 3 is mounted on the side plate 4. The grading mechanism 2 is used for calcining the catalyst material in separate chambers, and the protective mechanism 3 is used for heat preservation during the calcination process to reduce heat loss. Specifically, the grading mechanism 2 includes at least two calcination units arranged side-by-side. Each calcination unit includes a heater 21 located at the bottom and a roller 23 rotatably connected to the top of the heater 21. A rotating shaft 24 spans between the frames 1. The two sides of the roller 23 are rotatably supported on the rotating shaft 24 to increase stability during rotation. A heat insulation plate 29 is fixedly connected between two adjacent rollers 23 to block heat transfer between different rollers 23. An operating table 22 is provided on the side, which is used to set and control the calcination process parameters. The top of the drum 23 is provided with a cover plate 25 that can be opened and closed by hinges 26 and pull buckles 27. The top of the cover plate 25 is also fixedly connected with an observation window 28 for easy observation of the material status inside the drum 23. Meanwhile, the protective mechanism 3 includes a guide shaft 31 horizontally installed on the side plate 4. A rotating shaft 33 is fitted around the outer periphery of the guide shaft 31. The insulation sleeve 34 is fixedly connected to the rotating shaft 33, so that the insulation sleeve 34 can rotate around the guide shaft 31 to cover or detach from the outer wall of the drum 23. In order to improve the installation stability of the guide shaft 31, the two ends of the guide shaft 31 are fixed between the side plates 4 by stabilizing shafts 32. The inner wall of the insulation sleeve 34 is provided with an insulation layer 36 to enhance the insulation effect. A handle 35 for easy pushing and pulling by the operator is fixedly connected to the top front side of the insulation sleeve 34.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3The grading mechanism 2 is mounted on the frame 1 and is used to achieve simultaneous high-temperature treatment of various catalyst materials in separate chambers. The core of the grading mechanism 2 consists of at least two calcination units arranged side by side. Each calcination unit includes a heater 21 at the bottom and a drum 23 at the top. The heater 21 is fixedly mounted on the frame 1 and serves not only as a heat source but also as a power source to drive the drum 23 to rotate. An operating table 22 is fixedly mounted on the front side of the heater 21. The operating table 22 is used by the operator to set the calcination temperature and rotation speed process parameters. The drum 23 serves as a cavity for containing and calcining the materials. The bottom end of the drum 23 is rotatably connected to the top of the heater 21. To further ensure the stability of the drum 23 during rotation, the grading mechanism 2 also includes a rotating shaft 24 spanning across the frame 1. The outer walls of both sides of the drum 23 are rotatably supported on the rotating shaft 24. When the heater 21 is started, it drives the drum 23 to rotate synchronously around the axis of the rotating shaft 24, thereby achieving uniform tumbling and heating of the material. To facilitate loading and unloading, an opening is provided at the top of the drum 23, and a cover plate 25 is provided on the opening. One end of the cover plate 25 is rotatably connected to the top edge of the drum 23 by a hinge 26, and the other end of the cover plate 25 is detachably locked to the drum wall of the drum 23 by a buckle 27, thus forming an openable connection. A transparent observation window 28 is also fixedly connected to the top of the cover plate 25, allowing observation of the calcination state of the internal material without opening the cover plate 25. Between two adjacent drums 23, a heat insulation plate 29 is also fixedly connected by a bracket. The heat insulation plate 29 can effectively block the transfer of heat between different calcination units, avoid mutual interference, and ensure the purity of different catalyst products.

[0026] Please refer to Figure 1 , Figure 2 and Figure 4 The protective mechanism 3 has a horizontally arranged guide shaft 31. Both ends of the guide shaft 31 are fixedly connected to the side plates 4 via stabilizing shafts 32. The stabilizing shafts 32 greatly enhance the installation stability and structural reliability of the guide shaft 31. The protective mechanism 3 also includes a second rotating shaft 33 and an insulation sleeve 34. The second rotating shaft 33 is located at the bottom of the insulation sleeve 34 and is fitted around the outer periphery of the guide shaft 31, thus forming a rotatable connection. The insulation sleeve 34 is a roughly semi-cylindrical cover, providing insulation... The inner wall of the sleeve 34 is fixedly attached with an insulation layer 36, which is made of a high-temperature resistant material with low thermal conductivity. A handle 35 for the operator to hold is also fixedly connected to the top front side of the insulation sleeve 34. The protective mechanism 3 is installed on the side plate 4 fixedly connected to one side of the frame 1. The insulation sleeve 34 and the insulation layer 36 physically cover the upper part of the roller 23, forming a closed or semi-closed insulation space, which directly prevents the heat generated by the roller 23 from radiating and dissipating to the surrounding environment.

[0027] Meanwhile, the overall installation position of the protective mechanism 3 corresponds to the roller 23 in the grading mechanism 2. In the assembled state, when heat preservation is required, the operator can hold the handle 35 to make the heat preservation sleeve 34 rotate downward around the axis of the guide shaft 31 until the inner arc surface of the heat preservation sleeve 34 is in contact with or adjacent to the outer wall of the roller 23, thus completing the coverage. This rotatable hood-type heat preservation structure ensures that heat loss can be effectively reduced and energy utilization can be improved during calcination. At the same time, when it is necessary to load, unload or observe, the heat preservation sleeve 34 can be rotated upward to open and expose the roller 23, which has extremely high operational convenience.

[0028] Working principle: Before catalyst calcination, the operator first uses the handle 35 on the protective mechanism 3 to rotate the insulation sleeve 34 upwards around the guide shaft 31, detaching it from the top area of ​​the drum 23. Then, the operator pulls the latch 27 on the cover plate 25 of the grading mechanism 2, and under the action of the hinge 26, the cover plate 25 is flipped upwards, exposing the internal cavity of the drum 23. At this time, different types of catalyst precursor materials to be calcined can be loaded into the multiple drums 23 arranged side by side. After loading is completed, the cover plate 25 is closed and locked with the latch 27. Then, the insulation sleeve 34 is rotated back to its original position using the handle 35, tightly covering the outer wall of the drum 23. Once the heating process is complete, the operator sets the required calcination temperature, rotation speed, and time parameters via the control panel 22 on the front of the heating machine 21, and starts the equipment. The heating machine 21 begins to heat the drum 23 and simultaneously drives the drum 23 to rotate slowly around the axis of the rotating shaft 24. The rotation of the drum 23 causes the internal material to tumble continuously, ensuring the uniformity of the material's heating. During this process, the insulation plates 29 between adjacent drums 23 effectively prevent the transfer of heat between different calcination units, ensuring that each material can be calcined in an independent and precisely controlled temperature environment, avoiding cross-contamination and interference between process parameters. Meanwhile, the protective mechanism 3, consisting of the insulation sleeve 34 and the insulation layer 36 covering the outside of the drum 23, encloses the large amount of heat generated by the drum 23 during high-temperature calcination within a limited space, greatly reducing heat loss to the surrounding environment, significantly improving the utilization efficiency of thermal energy, and reducing energy consumption. During the calcination process, the operator can monitor the color and shape changes of the internal material at any time through the observation window 28 on the cover plate 25. After the calcination process is completed, the equipment stops heating and rotating. After appropriate cooling, the insulation sleeve 34 and the cover plate 25 are opened again, and the prepared catalyst product can be taken out. Through the synergistic effect of the grading mechanism 2 and the protective mechanism 3, the problems of low production efficiency and energy waste in the existing technology are solved.

Claims

1. A high-temperature calcination rotary furnace for preparing catalysts, comprising: The frame (1), the grading mechanism (2) disposed on the frame (1) and the side plate (4) fixed to one side of the frame (1), the grading mechanism (2) includes a heater (21) disposed at the bottom and a roller (23) rotatably connected to the top of the heater (21); Its features are, It also includes a protective mechanism (3), which includes a guide shaft (31), a rotating shaft II (33) fitted on the guide shaft (31), and a heat-insulating sleeve (34) fixed on the rotating shaft II (33). The guide shaft (31) is horizontally installed on the side plate (4), so that the heat-insulating sleeve (34) can rotate around the guide shaft (31) to cover the outer wall of the roller (23). The top of the roller (23) is provided with a cover plate (25), and the cover plate (25) is provided with an observation window (28). The cover plate (25) is connected to the roller (23) in an openable and closable manner through a hinge (26) and a pull buckle (27). The top of the insulation sleeve (34) is provided with a handle (35), and the inner wall of the insulation sleeve (34) is provided with an insulation layer (36).

2. The high-temperature calcination rotary furnace for preparing catalysts according to claim 1, characterized in that, The grading mechanism (2) includes at least two rollers (23) arranged side by side, and a heat insulation plate (29) is fixed between two adjacent rollers (23).

3. A high-temperature calcination rotary furnace for preparing a catalyst according to claim 1 or 2, characterized in that, The grading mechanism (2) also includes a rotating shaft (24) spanning between the frames (1), and the two sides of the roller (23) are rotatably supported on the rotating shaft (24).

4. The high-temperature calcination rotary furnace for preparing a catalyst according to claim 3, characterized in that, The heating machine (21) drives the drum (23) to rotate synchronously around the axis of the rotating shaft (24).

5. The high-temperature calcination rotary furnace for preparing a catalyst according to claim 1, characterized in that, The grading mechanism (2) has an operating table (22) on the front side of the heating machine (21).

6. The high-temperature calcination rotary furnace for preparing a catalyst according to claim 1, characterized in that, The protective mechanism (3) also includes a stabilizing shaft (32), and the two ends of the guide shaft (31) are fixed between the side plates (4) through the stabilizing shaft (32).

7. The high-temperature calcination rotary furnace for preparing a catalyst according to claim 1, characterized in that, The handle (35) is fixedly connected to the front side of the top of the insulation sleeve (34).

8. The high-temperature calcination rotary furnace for preparing a catalyst according to claim 1, characterized in that, The second rotating shaft (33) is located at the bottom end of the insulation sleeve (34).

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