Multi-stage temperature control type catalyst calcination furnace

Abstract

The utility model discloses a multi -section temperature control type catalyst calcination furnace relates to catalyst calcination furnace technical field, including calcination furnace body, and the outside of calcination furnace body is installed and elevates the subassembly, and the top of calcination furnace body is installed with the top cover through elevating the subassembly, and the top of top cover is installed with the cylinder, and the telescopic end of cylinder extends to the inside of top cover and is fixedly connected with the lifting plate, and the bottom fixedly connected with the gate of lifting plate, and the inside rotation is connected with the rotating seat of calcination furnace body, and the top of rotating seat is opened with the placing groove, and the top of rotating seat is opened with the gate slot, and the gate is inserted with the gate slot, and the bottom of calcination furnace body is installed with the rotating component. The utility model discloses above -mentioned structure can be aimed at catalyst calcination each stage, sets up the temperature curve of special property, ensures that catalyst active site evenly distributes, significantly promotes catalytic performance, and can effectively compensate raw material batch difference, makes every batch catalyst to experience similar thermal conversion process, reduces quality fluctuation, guarantees product performance stability.

Description

Technical Field

[0001] This utility model belongs to the field of catalyst roasting furnace technology, and specifically relates to a multi-stage temperature-controlled catalyst roasting furnace. Background Technology

[0002] Catalyst roasting furnaces are key equipment in the preparation of catalytic materials, primarily used for high-temperature heat treatment of catalyst precursors. Through reactions such as dehydration, decomposition, crystal transformation, or sintering, specific active component distributions, pore structures, and mechanical strengths are imparted to the catalyst. The furnace body is typically constructed of high-temperature resistant alloys or refractory materials and equipped with a precise temperature control system capable of gradient heating and constant temperature control within the range of 300-1200℃, ensuring that the temperature uniformity error during roasting does not exceed ±5℃. Depending on the production scale, they are classified into box furnaces, tube furnaces, and rotary furnaces: box furnaces are suitable for small-batch, multi-variety production; tube furnaces facilitate gas atmosphere control; and rotary furnaces are suitable for continuous, large-scale roasting. This equipment is often paired with a tail gas treatment system to effectively absorb acidic or harmful gases released during roasting. It is widely used in petrochemical, environmental catalysis, and new energy materials fields and is one of the core pieces of equipment for ensuring the stability of catalyst performance.

[0003] Announcement No. "CN222187848U" discloses a catalyst roasting furnace, including a furnace body. A first exhaust pipe is connected to the furnace body, and a second exhaust pipe is connected to one end of the first exhaust pipe. A filter screen is installed inside the second exhaust pipe. The longitudinal section of the first exhaust pipe is an inclined L-shape, and the second exhaust pipe is vertically arranged. A frame is installed inside the second exhaust pipe, and the filter screen is connected to the frame. A cleaning component is connected to the frame. The cleaning component includes a motor connected to the frame, a rotating shaft driven by the motor, and a connecting plate connected to the rotating shaft. The connecting plate is arrayed with bristles that cooperate with the filter screen. The cleaning component can clean the filter screen to make the particles on the filter screen fall off, avoid obstruction of flue gas discharge, and eliminate the need for manual removal of the filter screen, making it convenient and quick.

[0004] While the aforementioned utility model can clean the filter screen using a cleaning component to remove particles and prevent obstruction of flue gas discharge, and is convenient and quick without requiring manual removal of the filter screen, catalyst calcination typically involves multiple stages, such as dehydration, decomposition, and crystal transformation, each with different temperature requirements. Without multi-stage temperature control, it is impossible to precisely meet the needs of each stage. Inappropriate temperatures can lead to deactivation, agglomeration, or incomplete decomposition of the catalyst's active components, directly affecting catalytic performance. Furthermore, a single or simple temperature control mode is insufficient to handle batch variations in raw materials and complex reaction processes. Different batches of catalyst precursors exhibit subtle differences in their physicochemical properties; the lack of multi-stage temperature control results in significant fluctuations in product quality and poor consistency. Utility Model Content

[0005] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a multi-stage temperature-controlled catalyst roasting furnace to solve the problem that catalyst roasting usually needs to go through multiple stages, such as dehydration, decomposition, crystal transformation, etc. Each stage has different temperature requirements. Without multi-stage temperature control, it is impossible to accurately meet the needs of each stage. Inappropriate temperature will lead to deactivation, agglomeration or incomplete decomposition of the active components of the catalyst, which directly affects the catalytic performance.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A multi-stage temperature-controlled catalyst roasting furnace includes a roasting furnace body, a lifting assembly installed on the outside of the roasting furnace body, a top cover installed on the top of the roasting furnace body via the lifting assembly, a cylinder installed on the top of the top cover, the telescopic end of the cylinder extending into the top cover and fixedly connected to a lifting plate, a gate plate fixedly connected to the bottom of the lifting plate, a rotating seat rotatably connected inside the roasting furnace body, a placement groove symmetrically opened on the top of the rotating seat, a gate slot opened on the top of the rotating seat, the gate plate and the gate slot are plugged in, and a rotating assembly installed at the bottom of the roasting furnace body. This allows for setting specific temperature curves for each stage of catalyst roasting, ensuring uniform distribution of catalyst active sites, significantly improving catalytic performance, and effectively compensating for batch differences in raw materials, ensuring that each batch of catalyst undergoes a similar thermal conversion process, reducing quality fluctuations, and guaranteeing stable product performance.

[0008] As a preferred technical solution, the lifting assembly includes a first drive motor, a lead screw, a guide rod, a lifting block, a connecting rod, and a mounting base. A fixed base is symmetrically and fixedly connected to the outer wall of the roasting furnace body. A guide rod is fixedly connected to each fixed base, and a lead screw is rotatably connected to each of the fixed bases. Lifting blocks are fitted onto the outer sides of both the guide rod and the lead screw. A connecting rod is symmetrically and fixedly connected to the top of each lifting block, and a mounting base is fixedly connected to the other end of each connecting rod. One side of the mounting base is fixedly connected to the top cover. The first drive motor is mounted on the top of the fixed base, and its output end is fixedly connected to the lead screw. The lead screw and the lifting block are threaded together, while the guide rod and the lifting block are slidably connected. This design avoids the risks of burns and collisions associated with manually opening the high-temperature top cover. The system automatically pauses operation during the automatic lifting of the top cover to prevent accidental contact. It also isolates harmful gases and dust generated during the roasting process, reducing the risk of operator exposure and ensuring personal safety.

[0009] As a preferred technical solution, the outer wall of the roasting furnace body is symmetrically provided with guide grooves, and a guide block is symmetrically fixedly connected to one side of the lifting block. The guide block and the guide groove are slidably connected. The guide groove on the outer wall of the roasting furnace body and the guide block of the lifting block are slidably connected, which can effectively limit the displacement of the lifting block, ensure that the lifting process of the top cover is smooth and stable, enhance the stability of equipment operation, and avoid the impact of shaking on the internal material roasting environment and the service life of the equipment.

[0010] As a preferred technical solution, the top of the lifting plate is symmetrically and fixedly connected with exhaust pipes, and the top of the top cover is symmetrically provided with through holes, which are connected to the inside of the top cover. The exhaust pipes and the through holes are slidably connected, so that when the lifting plate drives the gate to rise and fall, the exhaust function is not affected. This not only allows for the timely discharge of roasting exhaust gas and the maintenance of a good environment inside the furnace, but also ensures smooth lifting operation, achieving coordination between exhaust and component movement functions, and ensuring efficient roasting operation.

[0011] As a preferred technical solution, the rotating assembly includes a rotating shaft, a driven gear, a second drive motor, and a drive gear. The rotating shaft is fixedly connected to the bottom of the rotating seat, and the other end of the rotating shaft extends out of the bottom of the roasting furnace body. The driven gear is fixedly sleeved on the outer wall of the rotating shaft. The second drive motor is installed at the bottom of the roasting furnace body, and the drive gear is fixedly sleeved on the output end of the second drive motor. The drive gear and the driven gear mesh with each other. Through the meshing of the drive gear and the driven gear by the second drive motor, the rotating shaft and the rotating seat are driven to rotate, so that the catalyst placed in the placement groove of the rotating seat enters different temperature zones in an orderly manner, ensuring that the material is heated evenly, accurately realizing the segmented temperature control roasting process, and effectively improving the quality of catalyst roasting and production efficiency.

[0012] As a preferred technical solution, a fixing ring is fixedly fitted on the outer wall of the roasting furnace body, and support legs are symmetrically fixedly connected to the bottom of the fixing ring. This can ensure that the roasting furnace maintains balance during high-temperature roasting, avoid tilting or displacement due to uneven force, and ensure the stability of equipment operation.

[0013] As a preferred technical solution, an annular limiting groove is provided on the inner wall of the calcining furnace body, and an annular limiting block is fixedly connected to the outer wall of the rotating seat. The annular limiting block and the annular limiting groove are slidably connected. The sliding fit between the annular limiting groove and the annular limiting block can effectively limit the radial displacement of the rotating seat, ensure its stability during rotation, and avoid catalyst displacement or uneven calcination due to shaking. This provides a reliable structural guarantee for the precise calcination of the catalyst in each temperature zone.

[0014] In summary, the present invention has the following main advantages:

[0015] First, in this utility model, the catalyst is placed inside the placement slot of the rotating seat. The top cover is lowered by the lifting component and merged with the roasting furnace body. Then, the cylinder is started to control the lifting plate to drive the gate plate to lower. The gate plate is inserted into the gate slot. Then, the roasting furnace body is started. The heating component on the inner wall of the furnace evenly transfers heat to each temperature zone. When the lifting plate drives the gate plate to rise, the rotating component can drive the rotating seat to rotate the catalyst, so that the catalyst enters different temperature zones. A special temperature curve can be set for each stage of catalyst roasting to ensure that the active sites of the catalyst are evenly distributed, significantly improve the catalytic performance, and effectively compensate for the batch differences of raw materials, so that each batch of catalyst undergoes a similar thermal conversion process, reduce quality fluctuations, and ensure stable product performance.

[0016] Secondly, in this utility model, the catalyst is placed inside the placement groove of the rotating seat, the first drive motor is started, and the lead screw is controlled to rotate. The lead screw and the lifting block are threadedly driven, thereby controlling the lifting block to descend. When the lifting block descends, it drives the top cover to descend through the connecting rod and the mounting seat. At the same time, it drives the lifting block on the other side to slide and limit on the outside of the guide rod. Simultaneously, when the lifting block rises and falls, it drives the guide block to slide inside the guide groove, so that the top cover and the roasting furnace body are merged. This avoids the risks of burns and collisions caused by manually opening the high-temperature top cover. The operation can be automatically paused during the automatic lifting and lowering of the top cover to prevent accidental contact by personnel. At the same time, it can isolate harmful gases and dust generated during the roasting process, reduce the risk of exposure for operators, and ensure personal safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is the utility model Figure 1 Enlarged view of part A;

[0019] Figure 3 This is a schematic diagram of the inverted three-dimensional structure of this utility model;

[0020] Figure 4 This is a cross-sectional three-dimensional structural schematic diagram of the present invention.

[0021] Reference numerals in the attached drawings: 1. Roasting furnace body; 2. Fixing ring; 3. Support leg; 4. Top cover; 5. Cylinder; 6. Lifting plate; 7. Gate plate; 8. Through hole; 9. Exhaust pipe; 10. Rotating seat; 11. Placement slot; 12. Gate slot; 13. Fixing seat; 14. Lifting assembly; 141. First drive motor; 142. Lead screw; 143. Guide rod; 144. Lifting block; 145. Connecting rod; 146. Mounting seat; 15. Guide slot; 16. Guide block; 17. Rotating assembly; 171. Rotating shaft; 172. Driven gear; 173. Second drive motor; 174. Drive gear; 18. Annular limiting slot; 19. Annular limiting block. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 4 The multi-stage temperature-controlled catalyst roasting furnace described in this embodiment includes a roasting furnace body 1. A lifting assembly 14 is installed on the outside of the roasting furnace body 1. A top cover 4 is installed on the top of the roasting furnace body 1 via the lifting assembly 14. A cylinder 5 is installed on the top of the top cover 4. The telescopic end of the cylinder 5 extends into the top cover 4 and is fixedly connected to a lifting plate 6. A gate plate 7 is fixedly connected to the bottom of the lifting plate 6. A rotating seat 10 is rotatably connected inside the roasting furnace body 1. The top of the rotating seat 10 has symmetrically opened placement slots 11 and a gate slot 12. The gate plate 7 and the gate slot 12 are inserted into each other. A rotating assembly 17 is installed at the bottom of the roasting furnace body 1. Heating elements, which are resistance wires, are symmetrically installed on the inner wall of the furnace body 1 according to different temperature zones. The catalyst is placed in the placement slot 11 of the rotating seat 10. The top cover 4 is lowered by the lifting assembly 14 and merged with the furnace body 1. Then, the cylinder 5 is started to control the lifting plate 6 to drive the gate 7 to descend. The gate 7 is inserted into the gate slot 12. Then, the heating assembly on the inner wall of the furnace body 1 is started to evenly transfer heat to each temperature zone. When the lifting plate 6 drives the gate 7 to rise, the rotating assembly 17 can make the rotating seat 10 drive the catalyst to rotate, so that the catalyst enters different temperature zones.

[0024] refer to Figures 2 to 4The lifting assembly 14 includes a first drive motor 141, a lead screw 142, a guide rod 143, a lifting block 144, a connecting rod 145, and a mounting base 146. A fixed base 13 is symmetrically fixedly connected to the outer wall of the roasting furnace body 1. A guide rod 143 is fixedly connected to each fixed base 13, and a lead screw 142 is rotatably connected to each fixed base 13. Lifting blocks 144 are fitted onto the outer sides of both the guide rod 143 and the lead screw 142. A connecting rod 145 is symmetrically fixedly connected to the top of each lifting block 144. A mounting base 146 is fixedly connected to the other end of each connecting rod 145. One side of the mounting base 146 is fixedly connected to the top cover 4. The first drive motor 141 is mounted on the top of the fixed base 13. The output end of a drive motor 141 is fixedly connected to a lead screw 142. The lead screw 142 is threadedly connected to a lifting block 144, and the guide rod 143 is slidably connected to the lifting block 144. When the catalyst is placed in the placement slot 11 of the rotating seat 10, the first drive motor 141 is started to control the lead screw 142 to rotate. The lead screw 142 and the lifting block 144 are threadedly driven, thereby controlling the lifting block 144 to descend. When the lifting block 144 descends, it drives the top cover 4 to descend through the connecting rod 145 and the mounting seat 146. At the same time, it drives the lifting block 144 on the other side to slide and limit on the outside of the guide rod 143, so that the top cover 4 merges with the roasting furnace body 1.

[0025] refer to Figure 2 The outer side wall of the roasting furnace body 1 is symmetrically provided with guide grooves 15, and the lifting block 144 is symmetrically fixedly connected with guide blocks 16 on one side. The guide blocks 16 and the guide grooves 15 are slidably connected. When the lifting block 144 is raised or lowered, the lifting block 144 drives the guide blocks 16 to slide inside the guide grooves 15.

[0026] refer to Figure 4 The top of the lifting plate 6 is symmetrically fixed with a smoke exhaust pipe 9, and the top of the top cover 4 is symmetrically provided with through holes 8. The through holes 8 are connected to the inside of the top cover 4. The smoke exhaust pipe 9 is slidably connected to the through holes 8. When the cylinder 5 is started, the lifting plate 6 drives the gate plate 7 to move up and down, and the lifting plate 6 drives the smoke exhaust pipe 9 to slide inside the through holes 8.

[0027] refer to Figure 3The rotating assembly 17 includes a rotating shaft 171, a driven gear 172, a second drive motor 173, and a drive gear 174. The rotating shaft 171 is fixedly connected to the bottom of the rotating seat 10. The other end of the rotating shaft 171 extends out of the bottom of the roasting furnace body 1. The driven gear 172 is fixedly sleeved on the outer wall of the rotating shaft 171. The second drive motor 173 is installed at the bottom of the roasting furnace body 1. The drive gear 174 is fixedly sleeved on the output end of the second drive motor 173. The drive gear 174 and the driven gear 172 mesh with each other. When the second drive motor 173 is started, the drive gear 174 is controlled to rotate. The drive gear 174 drives the driven gear 172 to rotate, thereby causing the driven gear 172 to drive the rotating shaft 171 to rotate. The rotating shaft 171 drives the rotating seat 10 to rotate.

[0028] refer to Figure 1 A fixing ring 2 is fixedly fitted on the outer wall of the roasting furnace body 1. Support legs 3 are symmetrically fixedly connected to the bottom of the fixing ring 2. The fixing ring 2 is fitted on the outer wall of the roasting furnace body 1 to provide support and positioning. The symmetrical support legs 3 at the bottom of the ring 2 provide stable support for the furnace body, ensuring that the roasting furnace remains balanced during high-temperature roasting, avoiding tilting or displacement due to uneven force, and ensuring the stability of equipment operation.

[0029] refer to Figure 4 The inner wall of the roasting furnace body 1 is provided with an annular limiting groove 18, and an annular limiting block 19 is fixedly connected to the outer wall of the rotating seat 10. The annular limiting block 19 and the annular limiting groove 18 are slidably connected. When the rotating seat 10 rotates, the rotating seat 10 drives the annular limiting block 19 to slide inside the annular limiting groove 18.

[0030] Operating principle and advantages: First, the catalyst is placed inside the placement slot 11 of the rotating seat 10. The first drive motor 141 is started, and the lead screw 142 is controlled to rotate. The lead screw 142 and the lifting block 144 are threadedly driven, thereby controlling the lifting block 144 to descend. When the lifting block 144 descends, it drives the top cover 4 to descend through the connecting rod 145 and the mounting seat 146. At the same time, it drives the other side of the lifting block 144 to slide and limit on the outside of the guide rod 143. When the lifting block 144 rises and falls, it drives the guide block 16 to slide inside the guide groove 15, so that the top cover 4 and the roasting furnace body 1 are merged. Then, the cylinder 5 is started, and the lifting plate 6 drives the gate 7 to descend. The gate 7 is inserted into the gate groove 12. Then, the roasting furnace body 1 is started, and the heating components on the inner wall of the furnace are evenly transferred to each temperature zone. When the lifting plate 6 drives the gate 7 to rise, the rotating component 17 can make the rotating seat 10 drive the catalyst to rotate, so that the catalyst enters different temperature zones.

[0031] This invention can set exclusive temperature curves for each stage of catalyst calcination, ensuring uniform distribution of active sites on the catalyst, significantly improving catalytic performance, and effectively compensating for batch differences in raw materials, so that each batch of catalyst undergoes a similar thermal conversion process, reducing quality fluctuations and ensuring stable product performance.

Claims

1. A multi-stage temperature-controlled catalyst roasting furnace, comprising a roasting furnace body (1), characterized in that: A lifting assembly (14) is installed on the outside of the roasting furnace body (1). A top cover (4) is installed on the top of the roasting furnace body (1) via the lifting assembly (14). A cylinder (5) is installed on the top of the top cover (4). The telescopic end of the cylinder (5) extends into the top cover (4) and is fixedly connected to a lifting plate (6). A gate plate (7) is fixedly connected to the bottom of the lifting plate (6). A rotating seat (10) is rotatably connected inside the roasting furnace body (1). A placement groove (11) is symmetrically opened on the top of the rotating seat (10). A gate groove (12) is opened on the top of the rotating seat (10). The gate plate (7) and the gate groove (12) are inserted together. A rotating assembly (17) is installed at the bottom of the roasting furnace body (1).

2. The multi-stage temperature-controlled catalyst roasting furnace according to claim 1, characterized in that: The lifting assembly (14) includes a first drive motor (141), a lead screw (142), a guide rod (143), a lifting block (144), a connecting rod (145), and a mounting base (146). The outer side wall of the roasting furnace body (1) is symmetrically fixedly connected to a fixed base (13). The fixed base (13) is respectively fixedly connected to a guide rod (143) and rotatably connected to a lead screw (142). The outer side of the guide rod (143) and the lead screw (142) are both fitted with lifting blocks (144). The top of the lifting block (144) is symmetrically fixedly connected to a connecting rod (145). The other end of the connecting rod (145) is fixedly connected to a mounting base (146). One side of the mounting base (146) is fixedly connected to the top cover (4). The top of the fixed base (13) is equipped with a first drive motor (141). The output end of the first drive motor (141) is fixedly connected to the lead screw (142).

3. The multi-stage temperature-controlled catalyst calcining furnace according to claim 2, characterized in that: The lead screw (142) and the lifting block (144) are threadedly connected, and the guide rod (143) and the lifting block (144) are slidably connected.

4. The multi-stage temperature-controlled catalyst roasting furnace according to claim 3, characterized in that: The outer wall of the roasting furnace body (1) is symmetrically provided with guide grooves (15), and a guide block (16) is symmetrically fixedly connected to one side of the lifting block (144). The guide block (16) and the guide groove (15) are slidably connected.

5. The multi-stage temperature-controlled catalyst roasting furnace according to claim 1, characterized in that: The top of the lifting plate (6) is symmetrically fixedly connected with a smoke exhaust pipe (9), and the top of the top cover (4) is symmetrically provided with through holes (8). The through holes (8) are connected to the inside of the top cover (4), and the smoke exhaust pipe (9) and the through holes (8) are slidably connected.

6. The multi-stage temperature-controlled catalyst roasting furnace according to claim 1, characterized in that: The rotating assembly (17) includes a rotating shaft (171), a driven gear (172), a second drive motor (173), and a drive gear (174). The rotating base (10) is fixedly connected to the bottom of the rotating shaft (171). The other end of the rotating shaft (171) extends out of the bottom of the roasting furnace body (1). The driven gear (172) is fixedly sleeved on the outer wall of the rotating shaft (171). The second drive motor (173) is installed at the bottom of the roasting furnace body (1). The drive gear (174) is fixedly sleeved on the output end of the second drive motor (173). The drive gear (174) meshes with the driven gear (172).

7. The multi-stage temperature-controlled catalyst roasting furnace according to claim 1, characterized in that: The outer wall of the roasting furnace body (1) is fixedly fitted with a fixing ring (2), and the bottom of the fixing ring (2) is symmetrically fixedly connected with a support leg (3).

8. The multi-stage temperature-controlled catalyst roasting furnace according to claim 1, characterized in that: The inner wall of the roasting furnace body (1) is provided with an annular limiting groove (18), and the outer wall of the rotating seat (10) is fixedly connected with an annular limiting block (19). The annular limiting block (19) and the annular limiting groove (18) are slidably connected.

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