Device for reducing PDH non-catalyst removal resistance
By combining the stirring component and the airflow flushing component, the problems of catalyst resistance and carbon deposition were solved, thereby improving the efficiency and catalytic effect of propane dehydrogenation reaction.
Patent Information
- Application Number
- CN202420788667.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-17
AI Technical Summary
In existing technologies, catalyst resistance during propane dehydrogenation leads to a decrease in reaction rate and a weakening of catalytic effect. Furthermore, severe carbon buildup on the catalyst at high temperatures affects dehydrogenation efficiency.
The device combines a stirring component and an airflow flushing component. The stirring component increases the contact area between the reactants and the catalyst, while the airflow flushing component removes carbon deposits from the catalyst surface and restores the catalytic effect.
By increasing the contact area between reactants and catalyst and thoroughly removing carbon deposits, the reaction rate and production efficiency are improved, while catalyst resistance is reduced.
Smart Images
Figure CN222342818U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducing the resistance of PDH removal of non-catalysts, in particular to a device for reducing the resistance of PDH removal of non-catalysts. Background Art
[0002] Propane dehydrogenation is an important chemical process. Through this process, propane undergoes a dehydrogenation reaction under high temperature conditions and is converted into propylene and hydrogen. This reaction process is crucial to the production of propylene because propylene is a raw material widely used in plastics, rubber, textiles, pesticides, medicines and other industries. In the propane dehydrogenation process, the catalyst plays a key role. By introducing a catalyst, a hydrogen atom in the propane molecule can be removed to form propylene. Therefore, the selection and design of the catalyst are crucial to improving the dehydrogenation efficiency and propylene yield. At the same time, in the process of propane dehydrogenation, reducing the resistance of the catalyst in the propane dehydrogenation process is of great significance because it can improve the propane dehydrogenation efficiency and propylene yield. Therefore, a device for reducing the resistance of the PDH dehydrogenation catalyst is needed for use in conjunction.
[0003] The above prior art often has the following problems when used:
[0004] Propane dehydrogenation is an endothermic reaction that requires a high level of energy from the outside world. At the same time, the reaction is limited by thermodynamic equilibrium and requires a higher temperature to obtain a higher conversion rate. However, high temperature will inevitably bring about problems such as cracking and catalyst carbon deposition. Carbon deposition on the catalyst surface will reduce the catalytic effect, reduce the contact area between the reactants and the catalyst, reduce the reaction rate, and thus affect the dehydrogenation efficiency. Summary of the invention
[0005] In view of the deficiencies in the prior art, the utility model provides a device for reducing the resistance of PDH removal of non-catalysts.
[0006] The embodiment of the utility model provides a device for reducing the resistance of a PDH-removing catalyst, comprising:
[0007] A first housing, the upper surface of which is fixedly connected to a motor via a bracket;
[0008] A stirring assembly, the stirring assembly comprising a No. 1 rotating shaft fixedly connected to the output end of the motor, the No. 1 rotating shaft rotatably connected to the inner top surface of the No. 1 shell through a bearing, the No. 2 shell is fixedly connected to the inner bottom surface of the No. 1 shell, the No. 1 rotating shaft rotatably connected to the inner top surface of the No. 2 shell through a bearing, the bottom end of the No. 1 rotating shaft is fixedly connected to a mounting plate, three stirring rods are equidistantly fixedly connected to the bottom surface of the mounting plate, and a plurality of stirring rods are equidistantly fixedly connected to the circumferential side walls of the three stirring rods;
[0009] Two airflow flushing components are arranged between the first shell and the second shell.
[0010] Furthermore, the airflow flushing component includes a No. 2 rotating shaft rotatably connected to the inner top surface of the No. 1 shell through a bearing, the No. 1 rotating shaft is fixedly connected to a driving wheel in the circumference, the No. 2 rotating shaft is fixedly connected to a driven wheel in the circumference, a belt is wound between the driving wheel and the driven wheel, two connecting columns are fixedly connected to the inner top surface of the No. 1 shell, the bottom ends of the two connecting columns are fixedly connected to sleeves, the No. 2 rotating shaft is rotatably connected to the inner top surface of the sleeve through a bearing, the bottom end of the No. 2 rotating shaft is fixedly connected to a blowing fan blade, the bottom surface of the sleeve is connected to a plurality of ventilation pipes, and the bottom ends of the plurality of ventilation pipes are all connected to the interior of the No. 2 shell.
[0011] Furthermore, there is a relatively large transmission ratio between the driving wheel and the two driven wheels.
[0012] Furthermore, a through groove is provided on the front of the second shell, and a plurality of air outlets are provided on the side walls on both sides of the second shell.
[0013] Furthermore, the two airflow flushing components are symmetrically arranged about the first rotation axis.
[0014] Furthermore, the top surfaces of the two sleeves are each provided with a plurality of ventilation holes.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] In the utility model, by setting a stirring component, sufficient contact between reactants and catalysts can be achieved, and the contact area between reactants and catalysts in the whole reaction process can be increased, thereby improving the reaction rate. By setting an airflow flushing component, the power generated by the stirring component is used to flush the catalyst surface with airflow to remove carbon deposits on the surface, thereby restoring the catalytic effect and reducing resistance. At the same time, in conjunction with the stirring component, the flushed catalyst is continuously replaced, making the airflow flushing operation more thorough, restoring the catalytic effect, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structural analysis of a device for reducing the non-catalyst resistance of PDH removal described in an embodiment of the utility model.
[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of a device for reducing the resistance of PDH removal of non-catalysts described in an embodiment of the utility model.
[0019] Figure 3 It is a schematic diagram of the three-dimensional structure analysis from another perspective of a device for reducing the non-catalyst resistance of PDH removal described in an embodiment of the utility model.
[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0021] In the above drawings: 1 is housing No. 1, 2 is motor, 3 is rotating shaft No. 1, 4 is housing No. 2, 5 is mounting plate, 6 is stirring rod, 7 is stirring rod, 8 is rotating shaft No. 2, 9 is driving wheel, 10 is driven wheel, 11 is belt, 12 is connecting column, 13 is sleeve, 14 is fan blade, 15 is ventilation pipe, 16 is air outlet, 17 is ventilation hole. DETAILED DESCRIPTION
[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0023] like Figure 1-Figure 4 As shown, the embodiment of the utility model proposes a device for reducing the resistance of PDH removal catalyst, comprising:
[0024] A No. 1 shell 1, the upper surface of the No. 1 shell 1 is fixedly connected to a motor 2 through a bracket, and a stirring assembly, the stirring assembly includes a No. 1 rotating shaft 3 fixedly connected to the output end of the motor 2, the No. 1 rotating shaft 3 is rotatably connected to the inner top surface of the No. 1 shell 1 through a bearing, a No. 2 shell 4 is fixedly connected to the inner bottom surface of the No. 1 shell 1, the No. 1 rotating shaft 3 is rotatably connected to the inner top surface of the No. 2 shell 4 through a bearing, the bottom end of the No. 1 rotating shaft 3 is fixedly connected to a mounting plate 5, three stirring rods 6 are equidistantly fixedly connected to the bottom surface of the mounting plate 5, and a plurality of stirring rods 7 are equidistantly fixedly connected to the circumferential side walls of the three stirring rods 6;
[0025] Two air flow flushing components, both of which are arranged between the No. 1 shell 1 and the No. 2 shell 4, the air flow flushing components include a No. 2 rotating shaft 8 rotatably connected to the inner top surface of the No. 1 shell 1 through a bearing, the No. 1 rotating shaft 3 is circumferentially fixedly connected with a driving wheel 9, the No. 2 rotating shaft 8 is circumferentially fixedly connected with a driven wheel 10, a belt 11 is wound between the driving wheel 9 and the driven wheel 10, two connecting columns 12 are fixedly connected to the inner top surface of the No. 1 shell 1, the bottom ends of the two connecting columns 12 are fixedly connected with a sleeve 13, the No. 2 rotating shaft 8 is rotatably connected to the inner top surface of the sleeve 13 through a bearing, and the bottom end of the No. 2 rotating shaft 8 is fixedly connected to the inner top surface of the sleeve 13. A blowing fan blade 14 is fixedly connected, and a plurality of ventilation pipes 15 are connected to the bottom surface of the sleeve 13. The bottom ends of the plurality of ventilation pipes 15 are connected to the interior of the No. 2 shell 4. There is a large transmission ratio between the driving wheel 9 and the two driven wheels 10, so that the blowing fan blade 14 can generate very strong wind force. A through groove is provided on the front side of the No. 2 shell 4, and a plurality of air outlets 16 are provided on the side walls on both sides of the No. 2 shell 4, so that the airflow flushing component can operate normally. The two airflow flushing components are symmetrically arranged about the No. 1 rotating shaft 3 to improve the flushing effect. A plurality of ventilation holes 17 are provided on the top surfaces of the two sleeves 13 to ensure the normal operation of the airflow flushing component.
[0026] The detailed working process of the utility model is as follows:
[0027] When in use, the catalyst is located in the No. 2 shell 4. When carbon deposits appear on the surface of the catalyst, the motor 2 is started, and the motor 2 drives the No. 1 rotating shaft 3 to rotate, and then drives the mounting plate 5 to rotate. The mounting plate 5 drives multiple stirring rods 6 and stirring rods 7 to revolve, which can fully stir the catalyst inside the No. 2 shell 4, increase the contact area, and maximize the effect of the catalyst;
[0028] When the No. 1 rotating shaft 3 rotates, it drives the driving wheel 9 to rotate, and then drives the driven wheel 10 and the No. 2 rotating shaft 8 to rotate through the belt 11. The No. 2 rotating shaft 8 rotates, driving the blowing fan blades 14 to rotate, and a strong airflow is generated in the sleeve 13. The airflow is compressed through multiple ventilation pipes 15 and blown out from the ventilation pipes 15. At this time, the airflow has a higher air pressure, and the catalyst in the No. 2 shell 4 is flushed with airflow through the ventilation pipes 15, so as to remove carbon deposits on the surface of the catalyst and restore the catalytic effect. At the same time, with the cooperation of the stirring component, the flushed catalyst is continuously replaced, making the airflow flushing operation more thorough, thereby reducing the catalytic resistance and improving production efficiency.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A device for reducing the resistance of PDH removal catalyst, characterized in that: include: A first housing (1), the upper surface of the first housing (1) being fixedly connected to a motor (2) via a bracket; A stirring assembly, the stirring assembly comprising a first rotating shaft (3) fixedly connected to an output end of a motor (2), the first rotating shaft (3) being rotatably connected to an inner top surface of a first housing (1) through a bearing, the inner bottom surface of the first housing (1) being fixedly connected to a second housing (4), the first rotating shaft (3) being rotatably connected to an inner top surface of the second housing (4) through a bearing, the bottom end of the first rotating shaft (3) being fixedly connected to a mounting plate (5), the bottom surface of the mounting plate (5) being equidistantly fixedly connected to three stirring rods (6), and the circumferential side walls of the three stirring rods (6) being equidistantly fixedly connected to a plurality of stirring rods (7); Two airflow flushing components, both of which are arranged between the first shell (1) and the second shell (4).
2. A device for reducing the resistance of PDH removal catalyst according to claim 1, characterized in that: in: The airflow flushing component comprises a second rotating shaft (8) rotatably connected to the inner top surface of the first housing (1) through a bearing, the first rotating shaft (3) is fixedly connected to a driving wheel (9) in the circumferential direction, the second rotating shaft (8) is fixedly connected to a driven wheel (10) in the circumferential direction, a belt (11) is wound between the driving wheel (9) and the driven wheel (10), two connecting columns (12) are fixedly connected to the inner top surface of the first housing (1), the bottom ends of the two connecting columns (12) are fixedly connected to a sleeve (13), the second rotating shaft (8) is rotatably connected to the inner top surface of the sleeve (13) through a bearing, the bottom end of the second rotating shaft (8) is fixedly connected to a blowing fan blade (14), the bottom surface of the sleeve (13) is connected to a plurality of ventilation pipes (15), and the bottom ends of the plurality of ventilation pipes (15) are all connected to the inside of the second housing (4).
3. A device for reducing PDH removal non-catalyst resistance according to claim 1, characterized in that: in: The front side of the second shell (4) is provided with a through slot, and the side walls on both sides of the second shell (4) are provided with a plurality of air outlets (16).
4. The device for reducing the resistance of PDH removal catalyst according to claim 1, characterized in that: in: The two airflow flushing components are symmetrically arranged about the first rotating shaft (3).
5. The device for reducing the resistance of PDH removal catalyst according to claim 2, characterized in that: in: The top surfaces of the two sleeves (13) are each provided with a plurality of ventilation holes (17).