Dust filter device for a flexible gas system

Abstract

The utility model belongs to the field of chemical technology, especially relate to a dust removal filter device of flexible gas system. Including three stage cyclone separator, dust removal filter, primary cooling tower and carbonyl sulfur reactor, dust removal filter installs in the export position of three stage cyclone separator, primary cooling tower communicates with three stage cyclone separator, carbonyl sulfur reactor communicates with primary cooling tower. Through increasing a dust removal filter at three stage cyclone separator export pipeline position, flexible gas enters the dust removal filter and carries out coke powder removal, the coke powder content in the purified flexible gas of dust removal filter export greatly reduces, basically does not carry coke powder again, because of the reduction of coke powder content, the probability of the coke layer formation on the surface of catalyst bed layer reduces, and the bed layer pressure drop operating period can be greatly extended, and the operating cost of catalyst replacement is reduced. It is favorable to improve the coke powder removal rate of flexible gas, and prolong the service life of carbonyl sulfur catalyst.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, and specifically relates to a dust removal and filtration device for a flexible gas system. Background Technology

[0002] The flexible gas from the flexible coking unit is further treated by a three-stage cyclone separator to remove oily coke powder. The three-stage cyclone separator has a removal rate of 60%. 40% of the fine coke powder will be further cooled by the first-stage contact cooling tower, and some of the coke-containing water will enter the subsequent processing unit. The flexible gas enters the carbonyl sulfide reactor to participate in the reaction, converting the COS in the flexible gas into hydrogen sulfide, which will then enter the subsequent desulfurization system for regeneration.

[0003] However, the poor water washing effect of the primary contact cooling tower causes the flexible gas entering the R301 carbonyl sulfide reactor to carry coke dust, forming a coke dust layer on the catalyst bed. This leads to a continuous increase in the reactor pressure drop, which can reduce the service life of the catalyst and increase the frequency of catalyst replacement. Therefore, it is necessary to design a dust removal and filtration device for the flexible gas system to solve the above problems. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a dust removal and filtration device for a flexible air system, thereby solving the issues raised in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust removal and filtration device for a flexible air system, comprising:

[0006] Three-stage cyclone separator;

[0007] A dust filter is installed at the outlet of the three-stage cyclone separator;

[0008] A primary cooling tower, which is connected to the tertiary cyclone separator;

[0009] A carbonyl sulfide reactor, which is connected to the primary cooling tower.

[0010] Furthermore, the dust filter includes:

[0011] A filter box, wherein a separation port is provided on the filter box;

[0012] A lifting assembly is disposed inside the filter box;

[0013] The filter screen is configured in an umbrella shape and is connected to the lifting assembly, which drives the filter screen to move in the up-down direction.

[0014] Furthermore, the dust filter also includes:

[0015] A blocking component is connected to the lifting assembly, which drives the blocking component to move in the up-down direction, and the blocking component is used to block the separation port.

[0016] Furthermore, the lifting assembly includes:

[0017] A cylinder, which is connected to the inner bottom surface of the filter box;

[0018] A support plate is slidably connected to the inner wall of the filter box, and a cylinder is drivenly connected to the support plate and is used to drive the support plate to move in the up and down direction;

[0019] A support rod is provided, the lower end of which is connected to the support plate. The filter screen and the shielding member are both connected to the upper end of the support rod, and the shielding member is located above the filter screen.

[0020] Furthermore, the dust filter also includes:

[0021] A collar, which is located above the filter screen and rotatably connected to the support rod;

[0022] A cleaning brush, one end of which is connected to the collar, and the cleaning surface of the cleaning brush is located on the umbrella surface of the filter screen.

[0023] Furthermore, the dust filter also includes:

[0024] A filter cover is connected to the upper end of the filter box. The filter cover has an air inlet, and the filter box has an air outlet located at the lower end of the filter screen.

[0025] Furthermore, the dust filter also includes:

[0026] An electric motor, which is connected to the filter cover;

[0027] The first gear is connected to the motor via a transmission.

[0028] The second gear is connected to the collar and is used to mesh with the first gear.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] 1. By adding a dust filter at the outlet pipeline of the three-stage cyclone separator, the volatile gas enters the dust filter for coke removal. The coke content in the purified volatile gas at the outlet of the dust filter is greatly reduced, which reduces the probability of coke layer forming on the surface of the catalyst bed. The bed pressure drop operation cycle can be greatly extended, reducing the operating cost of catalyst replacement.

[0031] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of the dust removal and filtration device of the flexible air system according to an embodiment of the present invention is shown;

[0034] Figure 2 A schematic diagram of the external structure of the dust removal filter according to an embodiment of the present invention is shown;

[0035] Figure 3 A schematic diagram of the internal structure of the dust removal filter according to an embodiment of the present invention is shown;

[0036] Figure 4 This invention provides a schematic diagram of the internal structure of a dust filter according to another embodiment of the present invention.

[0037] Figure 5 It shows Figure 4 Enlarged view of region A in the middle;

[0038] Figure 6 A schematic diagram of the internal structure of the dust removal filter according to an embodiment of the present invention is shown;

[0039] Figure 7 A schematic diagram of the structure of a dust removal filter according to an embodiment of the present invention is shown.

[0040] Reference numerals: 1. Three-stage cyclone separator; 2. Dust filter; 3. First-stage cooling tower; 4. Carbonyl sulfide reactor; 5. Filter box; 6. Lifting assembly; 7. Filter screen; 8. Separation port; 9. Shielding component; 10. Cylinder; 11. Support plate; 12. Support rod; 13. Support sleeve; 14. Connecting plate; 15. Collar; 16. Cleaning brush; 17. Filter cover; 18. Air inlet; 19. Air outlet; 20. Motor; 21. First gear; 22. Second gear; 23. Filter housing; 24. Process gas inlet; 25. Clean process gas outlet; 26. Air blowing mechanism. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] like Figure 1 As shown in the figure, a dust removal and filtration device for a flexible gas system according to an embodiment of this utility model includes a three-stage cyclone separator 1, a dust filter 2, a primary cooling tower 3, and a carbonyl sulfide reactor 4. Specifically, the three-stage cyclone separator 1 can be configured as a BSX type, with a structure similar to the first and second stage cyclone separators of a regenerator. Dust-laden flue gas enters the cyclone separator from the top and then enters each parallel small cyclone separator tangentially. The purified gas enters the gas collection chamber through the top outlet pipe of the small cyclone separator, while the dust falls along the inner wall of the cylinder and enters the dust collection chamber through the ash hopper. The primary cooling tower 3 can be configured as an SCT-500L / SA industrial cooling tower with a cooling water circulation rate of up to 400 m³ / h and inlet and outlet water temperatures of 48℃ and 38℃, respectively. The dust filter 2 is installed at the outlet position of the three-stage cyclone separator 1. The primary cooling tower 3 is connected to the three-stage cyclone separator 1. The carbonyl sulfide reactor 4 is connected to the primary cooling tower 3. Specifically, a dust filter 2 is added at the outlet pipeline of the three-stage cyclone separator 1. The circulating gas enters this dust filter 2 for coke powder removal. The coke powder content in the purified circulating gas at the outlet of the dust filter 2 is significantly reduced, essentially eliminating the presence of coke powder. After being cooled by water washing in the primary cooling tower 3, the circulating gas then enters the carbonyl sulfide reactor 4. Due to the reduced coke powder content, the probability of coke layer formation on the catalyst bed surface decreases, significantly extending the bed pressure drop operating cycle and reducing the operating cost of catalyst replacement. This improves the coke powder removal rate of the circulating gas, extends the service life of the carbonyl sulfide catalyst, increases the added value of coke powder recovery, reduces the treatment cost of coke-containing water, and also reduces the labor and operating costs of catalyst replacement.

[0043] In this embodiment, as Figure 7As shown, to facilitate connection between the dust filter 2 and the three-stage cyclone separator 1 and the primary cooling tower 3, the dust filter 2 includes a filter housing 23, an air blowing mechanism 26, and a filter box 5. The filter housing 23 is provided with a process gas inlet 24 and a clean process gas outlet 25. The air blowing mechanism 26 can be configured as an air compressor or an air bag. The process gas inlet 24 is connected to the three-stage cyclone separator 1, and the clean process gas outlet 25 is connected to the primary cooling tower 3. The filter box 5 is installed inside the filter housing 23. After the flexible gas is introduced into the filter housing 23, the air blowing mechanism 26 blows air downwards to guide the flexible gas into the filter box 5 for filtration, and then the filtered clean flexible gas is discharged from the clean process gas outlet 25.

[0044] Optionally, such as Figures 2 to 4 as well as Figure 6 As shown, to facilitate the recovery and cleaning of coke dust in the dust filter 2, the dust filter 2 includes a filter box 5, a lifting assembly 6, and a filter screen 7. The filter box 5 is provided with a separation port 8. The lifting assembly 6 is disposed inside the filter box 5. The filter screen 7 is umbrella-shaped and connected to the lifting assembly 6, which drives the filter screen 7 to move vertically. Specifically, when the dust filter 2 is in use, the separation port 8 is closed, and the lifting assembly 6 is used to move the filter screen 7 away from the separation port 8. Flexible air enters the filter box 5 through the air inlet 18, passes through the upper surface of the filter screen 7, enters the lower surface of the filter screen 7, and then flows out from the air outlet 19. Coke dust and other impurities can adhere to the upper surface of the filter screen 7. Since the filter screen 7 is umbrella-shaped, coke dust and other impurities can slide down along the upper surface of the filter screen 7 to the edge. When it is necessary to recycle and clean coke powder, the lifting component 6 is used to move the filter screen 7 closer to the separation port 8, so that the coke powder and other impurities on the edge of the filter screen 7 can be cleaned from the separation port 8. That is, it is not necessary to disassemble the filter screen 7 as a whole for cleaning, which helps to simplify the cleaning process.

[0045] Optionally, such as Figure 3 and Figure 6 As shown, to prevent leakage of impurities such as coke powder, the dust filter 2 also includes a shielding component 9. The shielding component 9 is connected to the lifting assembly 6, which drives the shielding component 9 to move vertically. The shielding component 9 is used to block the separation port 8. Specifically, when flexible air enters the filter box 5, the lifting assembly 6 drives the shielding component 9 to block the separation port 8. When cleaning the filter screen 7 is required, the lifting assembly 6 moves the filter screen 7 closer to the separation port 8, and simultaneously drives the shielding component 9 to open the separation port 8.

[0046] Optionally, such as Figures 3 to 6As shown, to ensure the effectiveness of the lifting assembly 6, the lifting assembly 6 includes a cylinder 10, a support plate 11, and a support rod 12. The cylinder 10 is connected to the inner bottom surface of the filter box 5, and the support plate 11 is slidably connected to the inner wall of the filter box 5. The cylinder 10 is drively connected to the support plate 11 and is used to drive the support plate 11 to move in the vertical direction. Specifically, multiple cylinders 10 are provided, and the multiple cylinders 10 are evenly distributed at the bottom of the filter box 5. The support plate 11 is set as a disc-shaped structure. The cylinders 10 are welded or bolted to the inner bottom surface of the filter box 5, and the movable rod of the cylinder 10 is connected to the lower end surface of the support plate 11. The lower end of the support rod 12 is used to connect to the support plate 11. The filter screen 7 and the shielding member 9 are both connected to the upper end of the support rod 12, and the shielding member 9 is located above the filter screen 7. Specifically, a support sleeve 13 is provided in the middle of the upper surface of the support plate 11, and the lower end of the support rod 12 is inserted into the support sleeve 13. The filter screen 7 is coaxially distributed with the support rod 12, and the blocking member 9 is connected to the support rod 12 through the connecting plate 14. Thus, by using the cylinder 10 to push the support plate 11, the support rod 12, the filter screen 7, and the blocking member 9 can be driven to move synchronously in the up and down direction, which helps to ensure the effect of the lifting assembly 6 simultaneously driving the filter screen 7 and the blocking member 9.

[0047] Optionally, such as Figure 5 and Figure 6 As shown, to facilitate the cleaning of coke powder and other impurities on the filter screen 7, the dust filter 2 also includes a collar 15 and a cleaning brush 16. The collar 15 is located above the filter screen 7 and rotatably connected to the support rod 12. Specifically, the collar 15 and the support rod 12 are coaxially distributed. One end of the cleaning brush 16 is connected to the collar 15, and the cleaning surface of the cleaning brush 16 is located on the umbrella surface of the filter screen 7. Thus, by rotating the collar 15, the cleaning brush 16 can be driven to rotate on the upper surface of the filter screen 7. The cleaning brush 16 acts on the upper surface of the filter screen 7 to sweep the coke powder and other impurities on the filter screen 7 into the separation port 8, so as to facilitate the cleaning of the coke powder and other impurities.

[0048] Optionally, such as Figures 2 to 4 As shown, to ensure the stability of the support rod 12, the dust filter 2 also includes a filter cover 17, which is connected to the upper end of the filter box 5. The filter cover 17 has an air inlet 18, and the filter box 5 has an air outlet 19 located at the lower end of the filter screen 7. Specifically, a support sleeve 13 is provided inside the filter cover 17, and the upper end of the support rod 12 is inserted into the support sleeve 13, which facilitates the use of the upper and lower support sleeves 13 to support the support rod 12.

[0049] Optionally, such as Figure 5 and Figure 6As shown, to achieve automated cleaning and reduce the workload of workers, the dust filter 2 also includes a motor 20, a first gear 21, and a second gear 22. The motor 20 is connected to the filter cover 17. The motor 20 is driven by the first gear 21. The second gear 22 is connected to the collar 15 and meshes with the first gear 21. Specifically, the axial directions of both the first gear 21 and the second gear 22 are vertical, and the second gear 22 is coaxially distributed with the support rod 12. Thus, by using the motor 20 to drive the first gear 21 to rotate, and by using the meshing of the first gear 21 and the second gear 22 to drive the second gear 22 to rotate, and by using the second gear 22 to drive the collar 15 to drive the cleaning brush 16 to rotate, the cleaning brush 16 can be driven to rotate, which helps to automate the coke powder recovery and cleaning process, thereby reducing the workload of workers.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dust removal and filtration device for a flexible air system, characterized in that, include: Three-stage cyclone separator (1); A dust filter (2) is installed at the outlet of the three-stage cyclone separator (1); A primary cooling tower (3) is connected to the tertiary cyclone separator (1); A carbonyl sulfide reactor (4) is connected to the primary cooling tower (3).

2. The dust removal and filtration device for the flexible air system according to claim 1, characterized in that, The dust filter (2) includes: A filter box (5) is provided with a separation port (8); A lifting assembly (6) is disposed inside the filter box (5); The filter screen (7) is configured as an umbrella shape and is connected to the lifting assembly (6). The lifting assembly (6) is used to drive the filter screen (7) to move in the up and down direction.

3. The dust removal and filtration device for the flexible air system according to claim 2, characterized in that, The dust filter (2) also includes: A shielding component (9) is connected to the lifting assembly (6). The lifting assembly (6) is used to drive the shielding component (9) to move in the up and down direction. The shielding component (9) is used to block the separation port (8).

4. The dust removal and filtration device for the flexible air system according to claim 3, characterized in that, The lifting assembly (6) includes: Cylinder (10), the cylinder (10) is connected to the inner bottom surface of the filter box (5); A support plate (11) is slidably connected to the inner wall of the filter box (5), and a cylinder (10) is connected to the support plate (11) and is used to drive the support plate (11) to move in the up and down direction; A support rod (12) is provided, the lower end of which is used to connect to the support plate (11). The filter screen (7) and the shielding member (9) are both connected to the upper end of the support rod (12). The shielding member (9) is located above the filter screen (7).

5. The dust removal and filtration device for the flexible air system according to claim 4, characterized in that, The dust filter (2) also includes: A collar (15) is located above the filter screen (7) and is rotatably connected to the support rod (12); A cleaning brush (16) is provided, one end of which is connected to the collar (15), and the cleaning surface of the cleaning brush (16) is located on the umbrella surface of the filter screen (7).

6. The dust removal and filtration device for the flexible air system according to claim 5, characterized in that, The dust filter (2) also includes: The filter cover (17) is connected to the upper end of the filter box (5). The filter cover (17) has an air inlet (18) and the filter box (5) has an air outlet (19). The air outlet (19) is located at the lower end of the filter screen (7).

7. The dust removal and filtration device for the flexible air system according to claim 6, characterized in that, The dust filter (2) also includes: A motor (20) is connected to the filter cover (17); The first gear (21) is connected to the motor (20) in a transmission connection; The second gear (22) is connected to the collar (15) and is used to mesh with the first gear (21).

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