Regeneration device of catalyst for acetonitrile production
By introducing auger blades and stirring column structure into the catalyst regeneration unit for acetonitrile production, the problem of insufficient exchange between the bottom catalyst and the top catalyst was solved, achieving full contact between the catalyst and the pretreatment liquid and effective filtration of impurities, thus improving the pretreatment efficiency.
Patent Information
- Application Number
- CN202520420709.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
In existing catalyst regeneration units for acetonitrile production, insufficient exchange between the bottom and top catalysts during pretreatment affects pretreatment efficiency.
The system employs a screw conveyor blade and stirring column structure. The rotating column is driven by a motor, which in turn drives the screw conveyor blade and stirring column to achieve full exchange between the bottom catalyst and the upper catalyst. A filter barrel, baffles, and filter plates are also provided for impurity filtration.
This improves the efficiency of catalyst pretreatment, ensures sufficient contact between the catalyst and the pretreatment liquid, effectively removes impurities, and enhances the overall performance of the regeneration unit.
Smart Images
Figure CN223846939U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of catalyst regeneration device, specifically is a regeneration device of catalyst for acetonitrile production. BACKGROUND
[0002] Acetonitrile is also named methyl cyan, colorless liquid, extremely volatile, has the special smell similar to ether, has excellent solvent performance, can dissolve a variety of organic, inorganic and gaseous substances, has certain toxicity, and can be infinitely soluble with water and alcohol, acetonitrile can occur typical nitrile reaction, and be used to prepare many typical nitrogen-containing compounds, is an important organic intermediate. Acetonitrile needs to utilize catalyst to assist during production, and the catalyst will be deactivated after use, needs to utilize pretreatment liquid preparation tank to pretreat the deactivated catalyst, then can continue to use after ultrasonic treatment, airflow contact treatment, oxidation calcination treatment and secondary pore forming treatment, and the pretreatment of catalyst is the most important link in regeneration device.
[0003] When using the existing regeneration device to pretreat the catalyst for acetonitrile production, the deactivated catalyst is added to the pretreatment liquid preparation tank, and is pretreated under certain temperature and stirring conditions, and part of impurities on the surface of the catalyst is dissolved or converted, and the bottom catalyst cannot exchange with the catalyst above during stirring, thereby affecting the pretreatment efficiency of the catalyst. SUMMARY
[0004] The utility model aims at providing a regeneration device of catalyst for acetonitrile production to solve the problems in the background art.
[0005] To achieve the above object, the utility model adopts the technical scheme of providing a regeneration device of catalyst for acetonitrile production, including the jar body, the top of jar body is installed with the top cover, the top of top cover is fixedly connected with the fixed frame, the inside of fixed frame is fixedly connected with motor, the output of motor is fixedly connected with first rotating column, the inside of top cover is rotatably connected with second rotating column and third rotating column, the circumferential surface of second rotating column is fixedly connected with third synchronous wheel, the circumferential surface of first rotating column is fixedly connected with second synchronous wheel, and the outside of second synchronous wheel and third synchronous wheel is movably connected with first synchronous belt, the circumferential surface of third rotating column is fixedly connected with fourth synchronous wheel, the circumferential surface of first rotating column is fixedly connected with first synchronous wheel, and the outside of first synchronous wheel and fourth synchronous wheel is movably connected with second synchronous belt, the circumferential surface of first rotating column is fixedly connected with stirring column, and the circumferential surface of second rotating column and third rotating column is fixedly connected with auger blade.
[0006] Optionally, the bottom of the tank body is fixedly connected with a support frame, the top of the support frame is fixedly connected with a pneumatic cylinder, the output end of the pneumatic cylinder is fixedly connected with a connecting frame, and the end, away from the pneumatic cylinder, of the connecting frame is fixedly connected with the top of the fixed frame.
[0007] Optionally, the bottom of the tank body is provided with a mounting hole, and the inside of the mounting hole is fixedly connected with a filter barrel.
[0008] Optionally, the inside of the filter barrel is fixedly connected with a baffle, and the inside of the baffle is provided with a through hole.
[0009] Optionally, the inside of the filter barrel is threadedly connected with a limiting frame, the inside of the limiting frame is fixedly connected with a filter plate, and the inside of the limiting frame is threadedly connected with a bottom cover.
[0010] Optionally, a plurality of mounting holes and filter barrels are arranged, and the plurality of filter barrels are arranged in a ring shape.
[0011] Compared with the prior art, the present application has the following beneficial effects:
[0012] 1. The present application is provided with a screw flight and a stirring column, and when in use, the first rotating column is driven to rotate by the motor, so as to drive the second rotating column to rotate through the second synchronous wheel and the first synchronous belt, and drive the third rotating column to rotate through the first synchronous wheel and the second synchronous belt, so that the screw flight drives the catalyst at the bottom of the tank body to exchange with the catalyst above, and the stirring column is driven by the first rotating column to stir the catalyst, so that the catalyst is more fully contacted with the pretreatment liquid, thereby improving the pretreatment efficiency.
[0013] 2. The present application is provided with a filter barrel, a baffle and a filter plate, after the pretreatment of the catalyst is completed, the bottom cover at the bottom of the limiting frame is opened, the pretreatment liquid enters the filter barrel through the through hole in the inside of the baffle, and then the impurities in the pretreatment liquid are filtered through the filter plate and flow out from below the filter plate, and then the top cover is lifted by the connecting frame driven by the pneumatic cylinder, so that the pretreated catalyst in the tank body is conveniently taken out. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.
[0015] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0016] Figure 2 It is a schematic diagram of the internal structure of the present application;
[0017] Figure 3 For the utility model Figure 2 The enlarged structure schematic view of A in the middle;
[0018] Figure 4 For the utility model Figure 2 The enlarged structure schematic view of B in the middle.
[0019] In the figure: 1, tank body;2, top cover;3, fixed frame;4, motor;5, first rotating column;6, first synchronous wheel;7, second synchronous wheel;8, second rotating column;9, third rotating column;10, third synchronous wheel;11, fourth synchronous wheel;12, first synchronous belt;13, second synchronous belt;14, connecting frame;15, air cylinder;16, support frame;17, auger blade;18, stirring column;19, filter barrel;20, baffle;21, limiting frame;22, filter plate;23, bottom cover. Specific implementation
[0020] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following combines the figure and example, and the utility model is further detailedly explained.It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.
[0021] Refer to Figures 1-4A regeneration device for a catalyst used in acetonitrile production includes a tank body 1, a top cover 2 mounted on the top of the tank body 1, a feeding port on the top of the top cover 2, a fixing frame 3 fixedly connected to the top of the top cover 2, a motor 4 fixedly connected inside the fixing frame 3, a first rotating column 5 fixedly connected to the output end of the motor 4, the first rotating column 5 being rotatably connected to the inside of the top cover 2, a second rotating column 8 and a third rotating column 9 being rotatably connected inside the top cover 2, a third synchronous pulley 10 fixedly connected to the circumferential surface of the second rotating column 8, and the first rotating column 5... A second synchronous pulley 7 is fixedly connected to the circumferential surface of the first rotating column 9, and a first synchronous belt 12 is movably connected to the external surfaces of the second synchronous pulley 7 and the third synchronous pulley 10. A fourth synchronous pulley 11 is fixedly connected to the circumferential surface of the third rotating column 9. A first synchronous pulley 6 is fixedly connected to the circumferential surface of the first rotating column 9, and a second synchronous belt 13 is movably connected to the external surfaces of the first synchronous pulley 6 and the fourth synchronous pulley 11. A stirring column 18 is fixedly connected to the circumferential surface of the first rotating column 9, and auger blades 17 are fixedly connected to the circumferential surfaces of both the second rotating column 9 and the third rotating column 9. In use, the motor 4 drives the first rotating column 5 to rotate, which in turn drives the second rotating column 8 to rotate via the second synchronous pulley 7 and the first synchronous belt 12, and drives the third rotating column 9 to rotate via the first synchronous pulley 6 and the second synchronous belt 13. This allows the auger blades 17 to exchange the catalyst at the bottom of the tank 1 with the catalyst at the top, and the first rotating column 5 drives the stirring column 18 to stir the catalyst, ensuring more thorough contact with the pretreatment liquid, thereby improving the pretreatment efficiency.
[0022] A support frame 16 is fixedly connected to the bottom of the tank body 1, and a cylinder 15 is fixedly connected to the top of the support frame 16. A connecting frame 14 is fixedly connected to the output end of the cylinder 15, and the end of the connecting frame 14 away from the cylinder 15 is fixedly connected to the top of the fixed frame 3. The cylinder 15 drives the connecting frame 14 to move upward, thereby driving the top cover 2 to move upward, which facilitates the collection of catalyst inside the tank body 1.
[0023] A mounting hole is provided at the bottom of the tank body 1, and a filter barrel 19 is fixedly connected inside the mounting hole. The filter barrel 19 is used to filter the pretreatment liquid inside the tank body 1.
[0024] A baffle 20 is fixedly connected inside the filter canister 19, and the baffle 20 has through holes inside. The baffle 20 can block the catalyst and prevent the catalyst from falling into the filter canister 19.
[0025] The filter barrel 19 has an internal threaded connection to a limiting frame 21, and a filter plate 22 is fixedly connected inside the limiting frame 21. A bottom cover 23 is also internally threaded to the limiting frame 21. By connecting the limiting frame 21 to the inside of the filter barrel 19, the filter plate 22 can filter impurities carried by the pretreatment liquid and catalyst, as well as impurities generated after mixing.
[0026] The installation holes and the filter barrels 19 are provided in plurality, and the plurality of filter barrels 19 are distributed in a ring shape. The plurality of filter barrels 19 can simultaneously discharge the pretreatment liquid.
[0027] Working principle: when the catalyst used for acetonitrile production is pretreated, the deactivated catalyst is added into the inside of the tank body 1 from the feeding port of the top cover 2 and the pretreatment liquid is added, then the motor 4 is started to drive the first rotating column 5 to rotate, so as to drive the second rotating column 8 to rotate through the second synchronous wheel 7 and the first synchronous belt 12, and drive the third rotating column 9 to rotate through the first synchronous wheel 6 and the second synchronous belt 13, so that the auger blade 17 drives the catalyst at the bottom of the tank body 1 to exchange with the catalyst above, and the first rotating column 5 drives the stirring column 18 to stir the catalyst to make it contact with the pretreatment liquid more fully, so as to improve the pretreatment efficiency; after the pretreatment is completed, the limiting frame 21 is connected with the inside of the filter barrel 19, so as to filter the impurities carried by the pretreatment liquid and the catalyst and the impurities generated after mixing through the filter plate 22, after the filtering is completed, the air cylinder 15 is started to drive the connecting frame 14 to drive the top cover 2 to move upwards, so as to take out the pretreated catalyst in the tank body 1 for subsequent regeneration treatment.
[0028] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A regeneration device of a catalyst for acetonitrile production, comprising a tank body (1), characterized in that: The top of the tank body (1) is provided with a top cover (2), the top of the top cover (2) is fixedly connected with a fixed frame (3), the inside of the fixed frame (3) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly connected with a first rotating column (5), the first rotating column (5) is rotatably connected with the inside of the top cover (2), the inside of the top cover (2) is rotatably connected with a second rotating column (8) and a third rotating column (9), the circumferential surface of the second rotating column (8) is fixedly connected with a third synchronous wheel (10), the circumferential surface of the first rotating column (5) is fixedly connected with a second synchronous wheel (7), and the outside of the second synchronous wheel (7) and the third synchronous wheel (10) is movably connected with a first synchronous belt (12), the circumferential surface of the third rotating column (9) is fixedly connected with a fourth synchronous wheel (11), the circumferential surface of the first rotating column (5) is fixedly connected with a first synchronous wheel (6), and the outside of the first synchronous wheel (6) and the fourth synchronous wheel (11) is movably connected with a second synchronous belt (13), the circumferential surface of the first rotating column (5) is fixedly connected with a stirring column (18), and the circumferential surface of the second rotating column (8) and the third rotating column (9) is fixedly connected with a screw blade (17).
2. The apparatus for regenerating a catalyst for acetonitrile production according to claim 1, characterized by: The bottom of the tank body (1) is fixedly connected with a support frame (16), the top of the support frame (16) is fixedly connected with a gas cylinder (15), the output end of the gas cylinder (15) is fixedly connected with a connecting frame (14), and the end, away from the gas cylinder (15), of the connecting frame (14) is fixedly connected with the top of the fixed frame (3).
3. The apparatus for regenerating a catalyst for acetonitrile production according to claim 2, characterized by: The bottom of the tank body (1) is provided with a mounting hole, and the inside of the mounting hole is fixedly connected with a filter barrel (19).
4. The apparatus for regenerating a catalyst for acetonitrile production according to claim 3, characterized by: The inside of the filter barrel (19) is fixedly connected with a baffle (20), and the inside of the baffle (20) is provided with a through hole.
5. The apparatus for regenerating a catalyst for acetonitrile production according to claim 4, characterized by: The inside of the filter barrel (19) is threadedly connected with a limiting frame (21), the inside of the limiting frame (21) is fixedly connected with a filter plate (22), and the inside of the limiting frame (21) is threadedly connected with a bottom cover (23).
6. The apparatus for regenerating a catalyst for acetonitrile production according to claim 5, characterized by: The mounting hole and the filter barrel (19) are provided with a plurality of, and the plurality of filter barrels (19) are distributed in a ring shape.