Low-temperature methanol washing spraying mechanism

Abstract

The utility model discloses a low-temperature methanol washing spraying mechanism, which relates to the technical field of gas purification, and comprises a spraying tank, the upper end part of the spraying tank is communicated with a gas stripping nitrogen pipeline, the lower end part of the spraying tank is communicated with a gas outlet pipe, and a scraping mechanism for scraping filtered matters is arranged in the spraying tank. A mounting strip plate with a rectangular cross section is arranged at the bottom end of the inner wall of the spraying tank; according to the utility model, through the arranged scraping mechanism, water vapor adhered to the two filter screen plates and the inner wall of the spraying tank in the spraying process can be scraped, so that the situation that the subsequent spraying treatment is possibly influenced if the adhered water vapor is not scraped is avoided, the spraying treatment is ensured to be normally carried out, and when filtered matters are discharged, the water vapor cannot be scraped. The two filter screen plates can be opened or closed by the driving assembly, so that the filtered matter can be conveniently discharged into the filtered matter collecting barrel, and the situation that the filter screen plates are blocked by spraying the filtered matter and the filtering effect is influenced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas purification technology, specifically a low-temperature methanol washing spray mechanism. Background Technology

[0002] The low-temperature methanol washing process was jointly developed by Linde and Lurgi AG of Germany in the 1950s. It is a purification process suitable for treating gases containing high concentrations of acidic gases. This process uses cold methanol as a solvent and utilizes the different absorption selectivity of methanol for various components in the feed gas to achieve the purpose of removing acidic gases. It belongs to the physical absorption process.

[0003] According to Chinese Patent Application No. CN202420285366.7, a low-temperature methanol washing spray device is disclosed. This device includes a spray tank, with a uniformly distributed nitrogen stripping pipeline on the top right side of the outer wall of the spray tank, and an outlet pipe on the bottom left side of the outer wall of the spray tank. An air inlet and a water outlet are respectively located at the upper left and lower right corners of the front side of the spray tank. A motor is installed on the top of the spray tank, and a connecting column is installed at the motor's output end. This invention reduces the CO2 content in the semi-lean methanol solution by adding a nitrogen stripping pipeline, making the semi-lean methanol solution a near-lean methanol solution. Using the semi-lean methanol solution for washing reduces energy consumption, appropriately lowers the CO2 content in the semi-lean solution, and further reduces the temperature of the semi-lean solution by consuming a small amount of low-pressure nitrogen for stripping, increasing the absorption capacity of the semi-lean solution and reducing energy consumption. When cleaning the spray filter, the closed door needs to be opened. Over time, the connection between the closed door and the spray tank will become poor, affecting the spraying effect and making it difficult to discharge the spray filter. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a low-temperature methanol washing spray mechanism.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a low-temperature methanol washing spray mechanism, including a spray tank. The upper end of the spray tank is connected to a nitrogen stripping pipeline, and the lower end of the spray tank is connected to an outlet pipe. The interior of the spray tank is equipped with a scraping mechanism for scraping the filter material. The bottom of the inner wall of the spray tank is provided with a mounting strip with a rectangular cross-section. Both sides of the mounting strip are connected to filter screens that match the inner wall of the spray tank via rotating shafts. The two filter screens and the mounting strip form a circle. The bottom end of the mounting strip is provided with a driving component, and the bottom end of the spray tank is threadedly connected to a filter material collection cylinder.

[0007] As a preferred embodiment of the present invention, the scraping mechanism includes a rotating shaft disposed between the top wall of the spray tank and the mounting strip, and at least two connecting rods are connected to the outer wall of the rotating shaft, with the outer ends of the connecting rods connected to side scrapers that match the inner wall of the spray tank.

[0008] As a preferred technical solution of this utility model, a bottom scraper that matches the mounting strip and filter screen is connected to the connecting rod at the bottom end, and a first reduction motor that drives the rotating shaft to rotate is installed on the spray tank.

[0009] As a preferred embodiment of this utility model, the drive assembly includes a second reduction motor installed in the middle of the mounting strip, and the output shaft of the reduction motor is connected to a limit support plate.

[0010] As a preferred technical solution of this utility model, the bottom inner wall of the spray tank is provided with a guide groove that slides in accordance with the end of the limiting support plate.

[0011] As a preferred embodiment of this utility model, the bottom of the spray tank is provided with multiple support legs.

[0012] As a preferred technical solution of this utility model, the bottom end of the spray tank is provided with a first stepped groove, the inner wall of the first stepped groove is provided with an external thread, the inner wall of the opening of the filter collection cylinder is provided with a second stepped groove, and the inner wall of the second stepped groove is provided with an internal thread that is threadedly connected to the external thread of the first stepped groove.

[0013] The beneficial effects of this utility model are:

[0014] This low-temperature methanol washing spraying mechanism, through its scraping mechanism, can scrape off the water vapor adhering to the two filter screens and the inner wall of the spray tank during the spraying process. This prevents the water vapor from being scraped off, which could affect subsequent spraying treatments and ensure the normal operation of the spraying process. When discharging the filtered material, the drive component can open or close the two filter screens, thereby facilitating the discharge of the filtered material into the filter material collection cylinder and preventing the sprayed filtered material from clogging the filter screens and affecting the filtration effect. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the structure of a low-temperature methanol washing spray mechanism according to this utility model;

[0017] Figure 2 This is a cross-sectional view of a low-temperature methanol washing spray mechanism according to this utility model;

[0018] Figure 3 This utility model relates to a low-temperature methanol washing spray mechanism. Figure 2 Enlarged sectional view at point A in the middle.

[0019] In the diagram: 1. Spray tank; 2. Nitrogen stripping pipeline; 3. Gas outlet pipe; 4. Scraping mechanism; 5. Mounting strip; 6. Filter screen; 7. Drive assembly; 8. Filter material collection cylinder; 9. Rotating shaft; 10. Connecting rod; 11. Side scraper; 12. Bottom scraper; 13. Second geared motor; 14. Limiting support plate; 15. Guide slide; 16. Support leg; 17. First stepped groove; 18. Second stepped groove; 19. First geared motor. Detailed Implementation

[0020] 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.

[0021] Example: Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a low-temperature methanol washing spray mechanism, including a spray tank 1. The upper end of the spray tank 1 is connected to a nitrogen stripping pipeline 2, and the lower end of the spray tank 1 is connected to an outlet pipe 3. The interior of the spray tank 1 is equipped with a scraping mechanism 4 for scraping the filter material. The bottom of the inner wall of the spray tank 1 is provided with a rectangular mounting plate 5. Both sides of the mounting plate 5 are connected via pivots to filter screens 6 that match the inner wall of the spray tank 1. The two filter screens 6 and the mounting plate 5 form a circle. The bottom of the mounting plate 5 is provided with a drive assembly 7. The spray... The bottom of the tank 1 is threadedly connected to a filter material collection cylinder 8. The scraping mechanism 4 can scrape off the water vapor that adheres to the two filter screens 6 and the inner wall of the spray tank 1 during the spraying process. This avoids the possibility that the water vapor may affect the subsequent spraying process if it is not scraped off, and ensures the normal operation of the spraying process. When the filter material is discharged, the drive component 7 can open or close the two filter screens 6, so as to facilitate the discharge of the filter material into the filter material collection cylinder 8, and avoid the situation where the sprayed filter material clogs the filter screens 6 and affects the filtration effect.

[0022] The scraping mechanism 4 includes a rotating shaft 9 located between the top wall of the spray tank 1 and the mounting strip 5. At least two connecting rods 10 are connected to the outer wall of the rotating shaft 9. The outer ends of the connecting rods 10 are connected to side scrapers 11 that match the inner wall of the spray tank 1. The bottommost connecting rod 10 is connected to a bottom scraper 12 that matches the mounting strip 5 and the filter screen 6. A first reduction motor 19 is installed on the spray tank 1 to drive the rotating shaft 9 to rotate. The output shaft of the first reduction motor 19 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the side scrapers 11 and the bottom scraper 12 to rotate via the connecting rods 10, thereby scraping the filter material on the inner wall of the spray tank 1 and the two filter screens 6.

[0023] The drive assembly 7 includes a second reduction motor 13 installed in the middle of the mounting strip 5. The output shaft of the reduction motor 13 is connected to a limit support plate 14. The output shaft of the second reduction motor 13 drives the limit support plate 14 to rotate. When the limit support plate 14 rotates to below the mounting strip 5, the two filter screens 6 rotate downwards under their own gravity to open and discharge the filtered material. When the limit support plate 14 rotates to below the filter screens 6, the filter screens 6 can be supported to be horizontal via the rotating shaft.

[0024] The spray tank 1 has a guide groove 15 on the bottom inner wall that matches the end of the limiting support plate 14. This groove can guide the limiting support plate 14 effectively, improve the stability of the movement of the limiting support plate 14, and thus improve the stability of the filter screen plate 6.

[0025] The bottom of the spray tank 1 is provided with multiple support legs 16.

[0026] The spray tank 1 has a first stepped groove 17 at its bottom end, and the inner wall of the first stepped groove 17 has an external thread. The inner wall of the filter collection cylinder 8 has a second stepped groove 18 at its opening, and the inner wall of the second stepped groove 18 has an internal thread that is threaded to the external thread of the first stepped groove 17.

[0027] During operation, this low-temperature methanol washing spray mechanism, through its scraping mechanism 4, can scrape off the water vapor adhering to the two filter screens 6 and the inner wall of the spray tank 1 during the spraying process. This prevents the water vapor from being scraped off, which could affect subsequent spraying treatments and ensures the normal operation of the spraying process. When discharging the filtered material, the drive component 7 can open or close the two filter screens 6, thereby facilitating the discharge of the filtered material into the filter material collection cylinder 8. This avoids the sprayed filtered material clogging the filter screens 6 and affecting the filtration effect.

[0028] 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 low-temperature methanol washing spray mechanism, comprising a spray tank (1), wherein the upper end of the spray tank (1) is connected to a nitrogen stripping pipeline (2), and the lower end of the spray tank (1) is connected to an outlet pipe (3), characterized in that, The spray tank (1) is equipped with a scraping mechanism (4) for scraping the filter material inside. The bottom of the inner wall of the spray tank (1) is equipped with a mounting strip (5) with a rectangular cross-section. Both sides of the mounting strip (5) are connected by a rotating shaft to a filter screen (6) that matches the inner wall of the spray tank (1). The two filter screens (6) and the mounting strip (5) form a circle. The bottom of the mounting strip (5) is equipped with a drive assembly (7). The bottom of the spray tank (1) is threadedly connected to a filter material collection cylinder (8).

2. The low-temperature methanol washing spray mechanism according to claim 1, characterized in that, The scraping mechanism (4) includes a rotating shaft (9) located between the top wall of the spray tank (1) and the mounting plate (5). At least two connecting rods (10) are connected to the outer wall of the rotating shaft (9), and the outer ends of the connecting rods (10) are connected to side scrapers (11) that match the inner wall of the spray tank (1).

3. The low-temperature methanol washing spray mechanism according to claim 2, characterized in that, The bottom connecting rod (10) at the bottom end is connected to a bottom scraper (12) that matches the mounting strip (5) and the filter screen (6), and the spray tank (1) is equipped with a first geared motor (19) that drives the rotating shaft (9) to rotate.

4. The low-temperature methanol washing spray mechanism according to claim 1, characterized in that, The drive assembly (7) includes a second geared motor (13) installed in the middle of the mounting strip (5), and the output shaft of the second geared motor (13) is connected to a limit support plate (14).

5. A low-temperature methanol washing spray mechanism according to claim 4, characterized in that, The bottom inner wall of the spray tank (1) is provided with a guide groove (15) that matches the end of the limiting support plate (14) for sliding.

6. The low-temperature methanol washing spray mechanism according to claim 1, characterized in that, The bottom of the spray tank (1) is provided with multiple support legs (16).

7. The low-temperature methanol washing spray mechanism according to claim 1, characterized in that, The bottom end of the spray tank (1) is provided with a first stepped groove (17), the inner wall of the first stepped groove (17) is provided with an external thread, the inner wall of the filter collection cylinder (8) is provided with a second stepped groove (18), the inner wall of the second stepped groove (18) is provided with an internal thread that is threadedly connected to the external thread of the first stepped groove (17).

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