A methanol synthesis catalyst loading device

Abstract

The utility model discloses a kind of methanol synthesis catalyst filling devices, including filling device main body, the top of filling device main body is provided with tube plate, the top of filling device main body is installed with displacement structure, the bottom of displacement structure is installed with hopper, through-hole is installed on tube plate, the bottom of through-hole is installed with reaction tube, the bottom of reaction tube is installed with gravity sensor, the inside of reaction tube is installed with buffer structure, the bottom of hopper is installed with turnover structure, turnover structure includes driving motor, one end of driving motor is connected with rotating shaft, rotating shaft is sleeved with baffle outside, the size of baffle is same with the bottom of hopper.The utility model is integrated precision machinery, automatic control, with high uniformity, low breakage rate, high efficiency, high security and digitized management in one, completely solve the inherent drawbacks of traditional filling mode, provide key equipment support for high-quality, efficient, safe overhaul of large-scale methanol synthesis reactor.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a methanol synthesis catalyst loading device. Background Technology

[0002] Methanol is a crucial basic chemical raw material and clean fuel, primarily produced through the synthesis of syngas (CO, CO2, and H2) under high temperature, high pressure, and catalytic action. The methanol synthesis reactor is the core equipment in the entire production process, among which the tubular isothermal reactor is widely used due to its excellent heat exchange efficiency and temperature control capabilities.

[0003] Currently, the traditional method for loading catalysts into tubular reactors in industry is manual loading.

[0004] Manual loading method: The operator stands on the tube sheet at the top of the reactor and uses a common funnel and hose to pour the catalyst into the reaction tubes one by one. This method has significant drawbacks: Poor filling uniformity: It relies entirely on the experience and sense of responsibility of the workers, making it difficult to ensure that the filling amount and tightness of each tube are consistent, which can easily lead to uneven flow distribution between reaction tubes and affect the overall conversion rate.

[0005] High catalyst breakage rate: When the catalyst falls from a height onto the bed surface, the impact between particles and with the tube wall will cause severe wear and breakage, generating a large amount of dust.

[0006] Low operational efficiency: The large number of reaction tubes and the time-consuming manual filling of each tube greatly extended the factory's downtime for maintenance, resulting in huge economic losses.

[0007] Significant safety hazards exist: the operating environment is filled with dust, which poses a serious threat to the respiratory system of personnel; and working at the top of the reactor, which is tens of meters high, poses a risk of falling from a height. Utility Model Content

[0008] In summary, the existing methanol synthesis catalyst loading methods suffer from a series of common technical problems, such as poor loading uniformity, high catalyst breakage rate, and low operating efficiency.

[0009] Therefore, there is an urgent need to develop a new type of automated, closed, and precise catalyst loading device to achieve rapid, uniform, low-loss, safe, and environmentally friendly catalyst loading for tubular methanol reactors, ensuring the efficient, stable, and long-cycle operation of methanol production plants.

[0010] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a methanol synthesis catalyst loading device, comprising a loading device body, a tube sheet at the top of the loading device body, a displacement structure at the top of the loading device body, a funnel at the bottom of the displacement structure, a through hole at the tube sheet, a reaction tube at the bottom of the through hole, a gravity sensor at the bottom of the reaction tube, and a buffer structure inside the reaction tube.

[0011] As a preferred technical solution of this utility model, the displacement structure includes a lateral displacement structure and a longitudinal displacement structure. The lateral displacement structure includes a first motor, one end of which is connected to a first lead screw. The two ends of the first lead screw are respectively connected to first bearing seats. A first slider is sleeved on the first lead screw. Connecting seats are installed on both sides of the first slider. The connecting seats are connected to the longitudinal displacement structure.

[0012] As a preferred technical solution of this utility model, the longitudinal displacement structure includes a second motor, one end of the second motor is connected to a second lead screw, the two ends of the second lead screw are respectively connected to a second bearing seat, the bottom of the second bearing seat is provided with a sliding groove, the top of the second bearing seat is fixedly connected to a connecting seat, and a funnel is sleeved on the second lead screw.

[0013] As a preferred technical solution of this utility model, the first lead screw and the first slider, and the second lead screw and the funnel form a lead screw and nut structure.

[0014] As a preferred embodiment of this utility model, a speed reducer is provided between the first motor and the first lead screw, and between the second motor and the second lead screw.

[0015] As a preferred embodiment of this utility model, a flipping structure is installed at the bottom of the funnel. The flipping structure includes a drive motor, one end of which is connected to a rotating shaft. A baffle is sleeved on the outside of the rotating shaft, and the size of the baffle is the same as that of the bottom of the funnel.

[0016] As a preferred embodiment of this utility model, the buffer structure includes a flexible damping feed plate disposed on the inner wall of the reaction tube, the flexible damping feed plate being arranged in an inclined and staggered manner.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: Significantly improves the uniformity and consistency of packing: This invention, through the linkage of a high-precision weighing sensor and a displacement structure, enables precise weighing and quantitative packing of the catalyst in each reaction tube, fundamentally ensuring a high degree of consistency in the packing amount within thousands of reaction tubes. This lays the foundation for a uniform flow field and temperature field distribution in the reactor, significantly improving the methanol synthesis conversion rate and selectivity, and extending the catalyst's lifespan.

[0018] Significantly reduced catalyst breakage rate: A buffer structure is employed to allow catalyst particles to slide into the bottom of the reaction tube at a controlled, low speed, rather than falling freely from a height. This method greatly reduces violent collisions between catalyst particles and with the tube wall, thus reducing the catalyst breakage rate during the loading process.

[0019] The filling process is fully automated, including automatic positioning, weighing, filling, and recording. This eliminates the need for heavy and dangerous manual labor at the top of the reactor, increasing filling efficiency by 3-5 times compared to manual methods. It significantly reduces plant downtime for maintenance and generates substantial economic benefits. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of the flipping structure of this utility model; In the figure: 1. Main body of the filling device; 2. Tube sheet; 3. Displacement structure; 4. Funnel; 5. Through hole; 6. Reaction tube; 7. Gravity sensor; 8. Lateral displacement structure; 9. Longitudinal displacement structure; 10. First motor; 11. First lead screw; 12. First bearing seat; 13. First slider; 14. Connecting seat; 15. Second motor; 16. Second lead screw; 17. Second bearing seat; 18. Slide groove; 19. Reducer; 20. Tilting structure; 21. Drive motor; 22. Rotating shaft; 23. Baffle; 24. Flexible damping feeding plate. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. All identical reference numerals in the drawings refer to the same components.

[0022] Furthermore, detailed descriptions of known technologies are omitted if they are unnecessary to illustrate the features of this utility model. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0024] Example 1 like Figure 1-3 As shown, this utility model provides a methanol synthesis catalyst loading device, including a loading device body 1, a tube plate 2 at the top of the loading device body 1, a displacement structure 3 at the top of the loading device body 1, a funnel 4 at the bottom of the displacement structure 3, a through hole 5 on the tube plate 2, a reaction tube 6 at the bottom of the through hole 5, a gravity sensor 7 at the bottom of the reaction tube 6, and a buffer structure inside the reaction tube 6.

[0025] During operation, the displacement structure 3 drives the funnel 4 to move. The funnel 4 moves to the through hole 5 of each tube sheet 2 and discharges the catalyst into the through hole 5. A reaction tube 6 is installed at the bottom of the through hole 5 and the catalyst enters the reaction tube 6.

[0026] To improve the uniformity and consistency of filling: a gravity sensor 7 is installed at the bottom of the reaction tube 6, and a flipping structure 20 is installed at the bottom of the funnel 4. The flipping structure 20 includes a drive motor 21, one end of which is connected to a rotating shaft 22. A baffle 23 is sleeved on the outside of the rotating shaft 22, and the size of the baffle 23 is the same as the bottom of the funnel 4.

[0027] The catalyst is accurately weighed by the gravity sensor 7 at the bottom, and the amount of catalyst is controlled by the flipping structure 20 at the bottom. The rotating shaft 22 is driven by the drive motor 21, and the rotating shaft 22 drives the baffle 23 to rotate, thereby opening and closing the opening at the bottom of the funnel 4, thus realizing quantitative filling.

[0028] After the catalyst enters the reaction tube 6, in order to significantly reduce the catalyst breakage rate, a buffer structure is installed inside the reaction tube 6. The buffer structure is a flexible damping feed plate 24. The flexible damping feed plate 24 is arranged in an inclined and staggered manner, so that the catalyst particles slide into the bottom of the reaction tube in a controlled and low-speed state, rather than falling freely from a height.

[0029] The specific structures of displacement structure 3 include: lateral displacement structure 8 and longitudinal displacement structure 9. The lateral displacement structure 8 includes a first motor 10, one end of which is connected to a first lead screw 11. A reducer 19 is provided between the first motor 10 and the first lead screw 11. The two ends of the first lead screw 11 are respectively connected to a first bearing seat 12. A first slider 13 is sleeved on the first lead screw 11. Connecting seats 14 are installed on both sides of the first slider 13. The connecting seats 14 are connected to the longitudinal displacement structure 9.

[0030] It should be noted that the lateral displacement structure 8 drives the first lead screw 11 to rotate through the first motor 10. Since the first lead screw 11 and the first slider 13 form a lead screw and nut structure, the rotation of the first lead screw 11 drives the first slider 13 to move, thereby driving the first slider 13 to move laterally. Since the first slider 13 is connected to the longitudinal displacement structure 9 through the connecting seat 14, it drives the longitudinal displacement structure 9 to move laterally.

[0031] The longitudinal displacement structure 9 includes a second motor 15, one end of which is connected to a second lead screw 16. A reducer 19 is provided between the second motor 15 and the second lead screw 16. The two ends of the second lead screw 16 are respectively connected to second bearing seats 17. A sliding groove 18 is provided at the bottom of the second bearing seat 17. The top of the second bearing seat 17 is fixedly connected to the connecting seat 14. A funnel 4 is sleeved on the second lead screw 16.

[0032] It should be noted that the longitudinal displacement structure 9 drives the second lead screw 16 to rotate via the second motor 15. Since the second lead screw 16 and the funnel 4 form a lead screw and nut structure, the rotation of the second lead screw 16 drives the funnel 4 to move, thereby driving the funnel 4 to move longitudinally.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A methanol synthesis catalyst loading device, comprising a loading device body (1), characterized in that, The top of the main body (1) of the filling device is provided with a tube plate (2), the top of the main body (1) of the filling device is provided with a displacement structure (3), the bottom of the displacement structure (3) is provided with a funnel (4), the tube plate (2) is provided with a through hole (5), the bottom of the through hole (5) is provided with a reaction tube (6), the bottom of the reaction tube (6) is provided with a gravity sensor (7), the inside of the reaction tube (6) is provided with a buffer structure, the displacement structure (3) includes a lateral displacement structure (8) and a longitudinal displacement structure (9), the lateral displacement structure (8) includes a first motor (10), one end of the first motor (10) is connected to a first lead screw (11), the first lead screw (11) The first bearing seat (12) is connected to both ends of the first screw (11). The first slider (13) is sleeved on the first screw (11). The connecting seat (14) is installed on both sides of the first slider (13). The connecting seat (14) is connected to the longitudinal displacement structure (9). The longitudinal displacement structure (9) includes a second motor (15). One end of the second motor (15) is connected to a second screw (16). The two ends of the second screw (16) are connected to a second bearing seat (17). The bottom of the second bearing seat (17) is provided with a sliding groove (18). The top of the second bearing seat (17) is fixedly connected to the connecting seat (14). The funnel (4) is sleeved on the second screw (16).

2. The methanol synthesis catalyst loading device according to claim 1, characterized in that, The first lead screw (11) and the first slider (13), and the second lead screw (16) and the funnel (4) form a lead screw nut structure.

3. The methanol synthesis catalyst loading device according to claim 1, characterized in that, A speed reducer (19) is provided between the first motor (10) and the first lead screw (11), the second motor (15) and the second lead screw (16).

4. The methanol synthesis catalyst loading device according to claim 1, characterized in that, The bottom of the funnel (4) is equipped with a flipping structure (20), which includes a drive motor (21). One end of the drive motor (21) is connected to a rotating shaft (22). A baffle (23) is sleeved on the outside of the rotating shaft (22). The size of the baffle (23) is the same as the bottom of the funnel (4).

5. The methanol synthesis catalyst loading device according to claim 1, characterized in that, The buffer structure includes a flexible damping feed plate (24) disposed on the inner wall of the reaction tube (6), and the flexible damping feed plate (24) is arranged in an inclined and staggered manner.

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