Isobutane dehydrogenation reaction product filter

Abstract

The utility model discloses an isobutane dehydrogenation reaction product filter, which is characterized in that a filter element seat plate is arranged in the middle of a shell in the height direction, the top of the filter element seat plate is positioned below a liquid outlet, mounting holes are uniformly distributed on the filter element seat plate in a penetrating manner, a filter element is arranged in each mounting hole, and the filter element seat plate and the filter element seat plate are integrally formed. The bottom of the filter element is higher than the top of the liquid inlet, a liquid outlet cavity is formed in the top of the filter element base plate in the shell, a filter cavity is formed in the position, at the filter element, of the shell, a liquid inlet cavity is formed in the position, below the filter element, of the shell, and a flow baffle is arranged in the flowing stroke of the liquid inlet in the shell. Liquid passes through the flow baffle, the liquid is prevented from directly impacting the filter elements, the primary buffering effect is achieved, the filter elements are evenly distributed at the bottom of the filter element base plate, meanwhile, the secondary buffering effect is achieved, and in the whole filtering process, the good buffering effect and the good filtering effect are achieved on reaction products at different flow speeds.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a filter for isobutane dehydrogenation reaction products. Background Art

[0002] Through the isobutane dehydrogenation reaction, hydrogen atoms in isobutane molecules are removed to generate isobutene. Isobutene can be used to produce a variety of chemical products, such as through an oxidation reaction to produce methacrolein for the preparation of unsaturated aldehydes. Isobutene can also be converted into MTBE, tert-butanol, methyl methacrylate (MMA), etc., and is widely used in multiple fields such as chemical industry, medicine, and coatings.

[0003] In industrial production, the isobutane dehydrogenation reaction is usually carried out in the presence of a specific catalyst, such as a Pt-based catalyst, and the reaction conditions (such as temperature, pressure, etc.) are optimized to improve the yield and selectivity of isobutene. By adjusting the composition and preparation method of the catalyst, the conversion rate of isobutane and the selectivity of isobutene can be optimized, and the efficiency and economic benefits of the entire production process can be improved.

[0004] In the prior art, a Chinese patent with the publication number "CN105797457A" discloses a basket filter, which includes a water inlet and a water outlet, and filters the fluid through a filter basket arranged in the middle. However, when the filter is used as a rear-end component in the reaction process, the filtration needs to meet the generation speed of the front-end reaction products. Therefore, a filter structure for buffering the incoming liquid is required. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a filter for isobutane dehydrogenation reaction products, which has the advantage of buffering the incoming liquid.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A filter for isobutane dehydrogenation reaction products includes a shell, a liquid inlet and a liquid outlet. The liquid inlet is arranged on one side of the bottom of the shell in the horizontal direction, and the liquid outlet is arranged on one side of the top of the shell in the horizontal direction. A filter element seat plate is arranged in the middle of the shell in the height direction. The top of the filter element seat plate is located below the liquid outlet. Mounting holes are uniformly distributed through the filter element seat plate. A filter element is arranged in each mounting hole. The bottom of the filter element is higher than the top of the liquid inlet. An outlet liquid cavity is formed above the filter element seat plate in the shell. A filtering cavity is formed at the position of the filter element in the shell. An inlet liquid cavity is formed below the filter element in the shell. A baffle plate is arranged in the shell within the flow path of the liquid inlet.

[0007] Preferably, a connecting plate is arranged above the liquid inlet in the shell. One side of the connecting plate is connected to the inner wall of the shell, and the other side of the connecting plate is connected to the top of the baffle plate. The baffle plate is arranged vertically, and a space for liquid to flow is formed between the bottom of the baffle plate and the inner side wall of the shell. The baffle plate is located in the liquid inlet cavity.

[0008] By adopting the above technical solution, the connecting plate plays a role in connecting the baffle plate, thereby preventing the fluid from directly flowing into the filtering cavity after entering; instead, it first buffers through the liquid inlet cavity.

[0009] Preferably, an installation ring is arranged inside the shell. The installation ring is concentric with the shell. The outer circumferential surface of the installation ring is fixedly welded to the inner wall of the shell. The filter element seat plate is arranged on the top of the installation ring, and the filter element seat plate is concentric with the shell.

[0010] By adopting the above technical solution, the installation ring plays a role in positioning and connecting the filter element seat plate, preventing the filter element seat plate from being directly welded to the inner side of the shell, but instead being pre-positioned and installed through the installation ring.

[0011] Preferably, the bottom of the installation ring is fixedly welded to the inner wall of the shell, and the side wall of the filter element seat plate is fixed to the top of the installation ring.

[0012] By adopting the above technical solution, after the installation ring is positioned and installed, the filter element seat plate is directly welded and installed on the top of the installation ring.

[0013] Preferably, the filter element includes a cylinder body. The cylinder body penetrates upward to form an opening. Filter holes are uniformly distributed on the side wall and the bottom of the cylinder body. The cylinder body extends horizontally at the opening position to form a positioning ring.

[0014] By adopting the above technical solution, the structure of the filter element is disclosed, that is, the filter element is placed and positioned in the installation hole through the positioning ring. At the same time, the liquid enters the filter element after flowing reversely through the filter holes and then flows upward from the opening position.

[0015] Preferably, the filter element and the installation hole are connected by snap fit or bolt connection.

[0016] By adopting the above technical solution, that is, there are multiple connection methods between the filter element and the installation hole.

[0017] Preferably, a snap fit ring is arranged at the bottom of the positioning ring on the outer side wall of the cylinder body. The snap fit ring is concentric with the positioning ring. The diameter of the snap fit ring is smaller than the diameter of the positioning ring. An arc surface is arranged at the angular position of the snap fit ring.

[0018] By adopting the above technical solution, the lower surface of the clamping ring fixes the mounting hole, and the positioning ring functions to fix the upper surface of the mounting hole, thereby fixing the cylinder body on the filter element seat plate. At the same time, the arc surface facilitates the insertion of the cylinder body into the mounting hole.

[0019] Preferably, the distance between the baffle plate and the inner side wall of the shell is one-fourth to three-fourths of the diameter of the liquid inlet hole.

[0020] By adopting the above technical solution, the baffle effect of the baffle plate and the passing rate of the fluid are ensured.

[0021] Preferably, pipes are connected to the outside of the liquid inlet and the liquid outlet, docking flanges are connected to the outside of the pipes, and a utility port is provided on the side wall of the shell above the filter seat plate.

[0022] By adopting the above technical solution, the liquid inlet and the liquid outlet are connected to the external pipes through the docking flanges, and the filtered reaction products in the reaction product filter are adjusted through the utility port.

[0023] In summary, the fluid, i.e., the reaction product, enters the shell through the liquid inlet, first passes through the baffle plate to avoid direct impact of the liquid on the filter element, playing a role of primary buffering. The bottom of the filter element is higher than the top of the liquid inlet, which also serves to prevent the fluid from impacting the filter element, while increasing the volume of the liquid inlet chamber to ensure better mixing of the reaction products in the liquid inlet chamber. At the same time, the filter elements are evenly distributed at the bottom of the filter element seat plate, increasing the filtering area and playing a role of secondary buffering. Finally, the reaction products enter the liquid outlet chamber through the filter elements and leave the shell through the liquid outlet. The overall filtering process has good buffering and filtering effects on the reaction products at different flow rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic cross-sectional view of Embodiment 1;

[0025] Figure 2 is Figure 1 an enlarged schematic view of Part A shown in

[0026] Figure 3 is Figure 1 an enlarged schematic view of Part B shown in

[0027] Figure 4 is a top view of Embodiment 1 at the position of the filter element seat plate;

[0028] Figure 5 is a schematic cross-sectional view of Embodiment 2 at the position of the mounting hole;

[0029] In the figure, 1 is the housing; 11 is the liquid inlet; 12 is the liquid outlet; 13 is the pipeline; 14 is the docking flange; 15 is the positioning hole; 16 is the positioning block; 2 is the liquid outlet chamber; 21 is the utility port; 3 is the filtration chamber; 31 is the filter element seat plate; 32 is the mounting hole; 33 is the filter element; 34 is the mounting ring; 35 is the cylinder body; 36 is the opening; 37 is the positioning ring; 38 is the clamping ring; 39 is the bolt hole; 4 is the liquid inlet chamber; 41 is the baffle plate; 42 is the connecting plate. Detailed implementation mode

[0030] The following further elaborates on the present utility model in conjunction with the attached drawings.

[0031] This specific embodiment is merely an interpretation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0032] Embodiment 1:

[0033] As Figures 1 to 4 shown, an isobutane dehydrogenation reaction product filter includes a cylindrical housing 1 that is sealed at both the top and bottom. The liquid inlet 11 is provided on one side of the bottom of the housing 1 in the horizontal direction, and the liquid outlet 12 is provided on the other side of the top of the housing 1 in the horizontal direction. At the same time, pipelines 13 are connected to both the outside of the liquid inlet 11 and the liquid outlet 12. One end of the pipeline 13 is fixedly welded to the housing 1, and the other end of the pipeline 13 is connected with a docking flange 14. The pipeline 13 is communicated with the outside through the docking flange 14. At the same time, a utility port 21 is provided in the middle of the housing 1 to adjust the filtered reaction product in the housing 1.

[0034] As Figure 1 shown, a filter element seat plate 31 is provided in the middle of the housing 1 in the height direction. The top of the filter element seat plate 31 is located below the liquid outlet 12. A filter element 33 is provided inside the filter element seat plate 31. The filter element seat plate 31 divides the inside of the housing 1 into three parts from top to bottom. Respectively, above the filter element seat plate 31 in the housing 1 forms a liquid outlet chamber 2 at the top, and at the position of the filter element 33 in the housing 1 forms a middle filtration chamber 3. The housing 1 forms a lower liquid inlet chamber 4 below the filter element 33. The reaction product leaves from the liquid outlet 12 from bottom to top.

[0035] As Figures 2 to 4As shown in the figure, the installation method of the filter element seat plate 31 is as follows: An installation ring 34 is welded in the middle inside the housing 1. The installation ring 34 is concentric with the inside of the housing 1. The outer circumferential surface of the installation ring 34 is welded and fixed to the inner wall of the housing 1. The installation ring 34 is light in weight and convenient for welding. At the same time, it is convenient for height and horizontal adjustment. The installation ring 34 plays a role in pre-positioning the installation of the filter element seat plate 31. The filter element seat plate 31 is concentric with the housing 1. The bottom of the installation ring 34 is welded and fixed to the inner wall of the housing 1, and the side wall of the filter element seat plate 31 is fixed to the top of the installation ring 34.

[0036] As Figure 4 shown in the figure, positioning holes 15 are arranged near the outer circle of the filter element seat plate 31, and positioning blocks 16 are arranged at the positions of the positioning holes 15 on the installation ring 34. Then, when the positioning blocks 16 are inserted into the positioning holes 15, it effectively prevents the filter element seat plate 31 from rotating during the welding process.

[0037] As Figure 1 and Figure 4 shown in the figure, the specific structure of the filter element seat plate 31 is that installation holes 32 are evenly distributed through the filter element seat plate 31, and a filter element 33 is arranged in each installation hole 32. At the same time, the fixing structure of the filter element 33 and the filter element seat plate 31 in Embodiment 1 is that the filter element 33 includes a cylinder body 35. The cylinder body 35 penetrates upward to form an opening 36. Filter holes are evenly distributed on the side wall and bottom of the cylinder body 35. The cylinder body 35 extends horizontally at the position of the opening 36 to form a positioning ring 37. In Embodiment 1, the filter element 33 is connected to the filter element seat plate 31 by snap fit, which is convenient for subsequent replacement of the filter element 33. The specific snap fit structure is that a snap fit ring 38 is arranged at the bottom of the positioning ring 37 on the outer side wall of the cylinder body 35. The snap fit ring 38 is concentric with the positioning ring 37. The diameter of the snap fit ring 38 is smaller than the diameter of the positioning ring 37, and an arc surface is arranged at the angular position of the snap fit ring 38.

[0038] As Figure 1 shown in the figure, in order to prevent the reaction product flow rate from being too fast, a baffle plate 41 is arranged in the housing 1 within the flow path of the liquid inlet 11. The distance between the baffle plate 41 and the inner side wall of the housing 1 is one-fourth to three-fourths of the diameter of the liquid inlet hole. The fixing structure of the baffle plate 41 is: A connecting plate 42 is arranged above the liquid inlet 11 inside the housing 1. One side of the connecting plate 42 is connected to the inner wall of the housing 1, and the other side of the connecting plate 42 is connected to the top of the baffle plate 41. The baffle plate 41 is arranged vertically. A space for liquid flow is formed between the bottom of the baffle plate 41 and the inner side wall of the housing 1. The baffle plate 41 is located in the liquid inlet chamber 4; In order to improve the filtration effect and at the same time prevent the reaction product from bypassing the baffle plate 41 horizontally and hitting the filter element 33, the bottom of the filter element 33 is higher than the top of the liquid inlet 11.

[0039] Working principle:

[0040] During the filtration process of the filter, the reaction product enters the housing 1 through the liquid inlet 11. First, it passes through the baffle 41 and enters the liquid inlet chamber 4. Then the reaction product flows upward and passes through the filter element 33 which is evenly distributed and extends downward. The filtration area is larger. The liquid entering in one direction is expanded to enter the filter element 33 in multiple directions, which has a good buffering effect. The filtered reaction product enters the liquid outlet chamber 2 through the filter element 33 and leaves the housing 1 from the liquid outlet 12, completing the entire filtration process.

[0041] Example 2:

[0042] As Figure 5 shown, the difference between Example 2 and Example 1 lies in another connection method of the filter element 33. That is, in Example 2, the filter element 33 and the mounting hole 32 are connected by bolts. The filter element seat plate 31 is provided with bolt holes 39 (or bottom pre-welded nuts) near the mounting hole 32. The bolts pass through the positioning ring 37 of the filter element 33 and are threadedly connected to the bolt holes 39.

[0043] The working principle of Example 2 is the same as that of Example 1.

Claims

1. An isobutane dehydrogenation reaction product filter, comprising a housing (1), a liquid inlet (11) and a liquid outlet (12), characterized in that: The liquid inlet (11) is arranged on one side of the bottom of the housing (1) in the horizontal direction, the liquid outlet (12) is arranged on one side of the top of the housing (1) in the horizontal direction, a filter element seat plate (31) is arranged in the middle of the housing (1) in the height direction, the top of the filter element seat plate (31) is located below the liquid outlet (12), mounting holes (32) are uniformly and penetratingly distributed on the filter element seat plate (31), a filter element (33) is arranged in each mounting hole (32), the bottom of the filter element (33) is higher than the top of the liquid inlet (11), a liquid outlet cavity (2) is formed inside the housing (1) above the filter element seat plate (31), a filter cavity (3) is formed in the housing (1) at the position of the filter element (33), a liquid inlet cavity (4) is formed below the filter element (33) in the housing (1), and a baffle plate (41) is arranged in the housing (1) within the flow path of the liquid inlet (11).

2. The isobutane dehydrogenation reaction product filter according to claim 1, wherein: A connecting plate (42) is arranged inside the housing (1) above the liquid inlet (11), one side of the connecting plate (42) is connected to the inner wall of the housing (1), the other side of the connecting plate (42) is connected to the top of the baffle plate (41), the baffle plate (41) is arranged vertically, a space for liquid flow is formed between the bottom of the baffle plate (41) and the inner side wall of the housing (1), and the baffle plate (41) is located in the liquid inlet cavity (4).

3. The isobutane dehydrogenation reaction product filter according to claim 1, characterized in that: An installation ring (34) is arranged inside the housing (1), the installation ring (34) is concentric with the housing (1), the outer circumferential surface of the installation ring (34) is welded and fixed to the inner wall of the housing (1), the filter element seat plate (31) is arranged on the top of the installation ring (34), and the filter element seat plate (31) is concentric with the housing (1).

4. The isobutane dehydrogenation reaction product filter according to claim 3, wherein: The bottom of the installation ring (34) is welded and fixed to the inner wall of the housing (1), and the side wall of the filter element seat plate (31) is fixed to the top of the installation ring (34).

5. The isobutane dehydrogenation reaction product filter according to claim 3, characterized in that: The filter element (33) includes a cylinder body (35), an opening (36) is formed by penetrating upward through the cylinder body (35), filter holes are uniformly distributed on the side wall and the bottom of the cylinder body (35), and a positioning ring (37) is formed by extending the cylinder body (35) horizontally at the position of the opening (36).

6. The isobutane dehydrogenation reaction product filter according to claim 5, characterized in that: The filter element (33) is connected to the mounting hole (32) by snap connection or bolt connection.

7. The isobutane dehydrogenation reaction product filter according to claim 6, wherein: A snap ring (38) is arranged on the outer side wall of the cylinder body (35) at the bottom of the positioning ring (37), the snap ring (38) is concentric with the positioning ring (37), the diameter of the snap ring (38) is smaller than the diameter of the positioning ring (37), and an arc surface is arranged at the angular position of the snap ring (38).

8. The isobutane dehydrogenation reaction product filter according to claim 1, characterized in that: The distance between the baffle plate (41) and the inner side wall of the housing (1) is one-fourth to three-fourths of the diameter of the liquid inlet hole.

9. The isobutane dehydrogenation reaction product filter according to claim 1, characterized in that: Pipes (13) are connected to the outside of the liquid inlet (11) and the liquid outlet (12), docking flanges (14) are connected to the outside of the pipes (13), and a utility port (21) is arranged on the side wall of the housing (1) above the filter seat plate.

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