A toluene refining tower with stable packing
By setting up top and bottom support devices in the toluene refining tower, using porcelain balls to support the molecular sieve and opening strip holes on the filler support plate, the problems of molecular sieve loss and reduced circulation area are solved, and the separation efficiency and maintenance cost are improved.
Patent Information
- Application Number
- CN202421258942.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-04
AI Technical Summary
In the existing toluene purification towers, molecular sieves are prone to loss, resulting in high maintenance costs and easily lead to reduced system circulation area.
A stable-filled toluene refining tower is designed. By setting up top and bottom support devices in the upper shell, multiple porcelain balls are used to support molecular sieve to prevent molecular sieve from leaking or being blown away. At the same time, strip holes are opened on the filler support plate of the bottom support device to improve the system circulation area.
Effectively prevent the loss of molecular sieves, reduce maintenance costs, and increase the system circulation area to ensure stable operation and efficient separation of toluene purification towers.
Smart Images
Figure CN222694049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a toluene refining tower, in particular to a toluene refining tower with stable filling. Background Art
[0002] The commonly used toluene production process is to pre-treat the raw materials, including filtering to remove impurities, decolorizing to remove colored substances, dehydrating to remove moisture, etc., to ensure the purity of the raw materials, and then separate the different components in the raw materials through a refining tower to obtain high-purity toluene.
[0003] The existing toluene refining tower usually has a molecular sieve installed inside the refining tower. The molecular sieve has a uniform microporous structure and its pore diameter is uniform. These pores can adsorb molecules smaller than their diameter into the interior of the pore cavity and have a preferential adsorption capacity for polar molecules and unsaturated molecules, thereby being able to separate molecules with different polarity, saturation, molecular size and boiling point. While the molecular sieve is distilling the raw materials, it is also catalyzing, polymerizing and adsorbing impurities to obtain a refined toluene product.
[0004] Although this toluene refining tower can effectively improve the purity of toluene products, it still has the following defects:
[0005] 1. Molecular sieves are generally small particle structures, which often leak from the toluene refining tower or are blown away by the bottom-up airflow during use, resulting in high system maintenance costs.
[0006] 2. When the molecular sieve is supported by a structure such as a screen, the particle structure of the molecular sieve often clogs the holes of the screen, resulting in a reduction in the system flow area.
[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention
[0008] The utility model aims to overcome the problems in the prior art that molecular sieves are easily lost, resulting in high maintenance costs and a reduction in the flow area of the system, and provides a toluene refining tower with stable molecular sieve filling and no reduction in the flow area of the filler.
[0009] To achieve the above objectives, the technical solution of the utility model is:
[0010] A toluene refining tower with stable filling, comprising: an upper shell, a lower shell, a molecular sieve, a top supporting device and a bottom supporting device;
[0011] The upper shell is a vertically arranged circular tube structure, the lower shell is a barrel-shaped structure with the same diameter as the upper shell, a top plate is fixedly arranged on the top of the upper shell, and the bottom of the upper shell is coaxially sealed and connected with the open end of the lower shell;
[0012] A top discharge port and a discharge port are arranged on the side wall of the upper shell, the top discharge port is arranged near the top of the upper shell, the discharge port is arranged near the bottom of the upper shell, a venting port and an exhaust port are arranged on the top plate, a feed port is arranged on the side wall of the lower shell, and a bottom discharge port is arranged at the bottom of the lower shell;
[0013] The molecular sieve, top supporting device and bottom supporting device are all fixedly arranged in the upper shell body, the molecular sieve is arranged in the middle part of the upper shell body, the top supporting device is arranged close to the top of the upper shell body, and the bottom supporting device is arranged close to the bottom of the upper shell body. A plurality of porcelain balls are arranged in the top supporting device and the bottom supporting device.
[0014] The top support device includes a support ring, multiple support bars, a coarse steel wire mesh and a fine steel wire mesh. The outer diameter of the support ring is the same as the inner diameter of the upper shell. The support ring is fixedly arranged in the upper shell along the horizontal direction. Multiple support bars are evenly arranged in the support ring. The coarse steel wire mesh is fixedly arranged at the bottom of the support ring and each support bar. The fine steel wire mesh is arranged directly below the coarse steel wire mesh. The fine steel wire mesh is fixedly arranged in the upper shell along the horizontal direction. The apertures of the coarse steel wire mesh and the fine steel wire mesh are both smaller than the particle size of the porcelain balls.
[0015] The plurality of support bars are divided into two groups perpendicular to each other, and the two groups of support bars are evenly and fixedly arranged in the upper shell.
[0016] The bottom supporting device includes a filler support plate and a coarse steel wire mesh. The filler support plate is a circular orifice plate structure whose outer diameter is the same as the inner diameter of the upper shell. The aperture of the filler support plate is smaller than the particle size of the porcelain ball. The filler support plate is fixedly arranged in the upper shell along the horizontal direction. The coarse steel wire mesh is arranged directly above the filler support plate. The coarse steel wire mesh is fixedly arranged in the upper shell along the horizontal direction. The aperture of the coarse steel wire mesh is smaller than the particle size of the porcelain ball.
[0017] The bottom support device also includes a connecting ring and a plurality of connecting strips. The outer diameter of the connecting ring is the same as the inner diameter of the upper shell. The connecting ring is fixedly arranged in the upper shell along the horizontal direction. A plurality of mutually parallel connecting strips are evenly arranged in the connecting ring. The tops of the plurality of connecting strips are fixedly connected to the bottom of the packing support plate.
[0018] The filler support plate is evenly provided with a plurality of strip-shaped holes.
[0019] The mesh number of the coarse steel wire mesh is 2 to 6 meshes, and the mesh number of the fine steel wire mesh is 8 to 12 meshes.
[0020] A remote thermometer port and two local thermometer ports are also provided on the side wall of the upper shell. The two local thermometer ports are respectively provided near the two ends of the upper shell, and the two local thermometer ports are both provided on the same side of the upper shell.
[0021] The remote thermometer port is arranged near the bottom of the upper shell, the remote thermometer port and the local thermometer port are arranged on different sides of the upper shell, and a local pressure gauge port is also arranged on the top plate.
[0022] A public engineering port is also arranged on the side wall of the lower shell body, and the public engineering port and the feed port are arranged on different sides of the lower shell body respectively.
[0023] The particle size of the porcelain balls is 5 to 15 mm.
[0024] Compared with the prior art, the beneficial effects of the utility model are:
[0025] 1. In the utility model, a toluene refining tower with stable filling is provided. The upper shell and the lower shell are coaxially sealed and connected to form the tower body of the toluene refining tower. The top support device, the molecular sieve and the bottom support device are fixedly arranged in the upper shell from top to bottom. The top support device and the bottom support device are provided with porcelain balls. The molecular sieve is supported by the porcelain balls to prevent the bottom molecular sieve from leaking and the top molecular sieve from being blown away by the gas from bottom to top. Therefore, the design can support the molecular sieve with porcelain balls, so that the molecular sieve is stably filled and the maintenance cost is effectively reduced.
[0026] 2. In the utility model, a toluene refining tower with stable filling is provided with a plurality of strip holes on the packing support plate in the bottom support device, and the width of the strip holes is smaller than the particle size of the porcelain balls. When the porcelain balls at the bottom are embedded in the strip holes during use, the packing cannot completely block the strip holes due to the particle structure and the shape of the strip holes. Therefore, the design can effectively increase the flow area of the system through the plurality of strip holes opened on the packing support plate.
[0027] 3. In the toluene refining tower with stable filling of the utility model, a remote thermometer port and two local thermometer ports are arranged on the side wall of the upper shell, and the two local thermometer ports are arranged near the two ends of the upper shell, so that the design can accurately monitor the temperature at both ends of the molecular sieve, and realize remote temperature monitoring at the same time, thereby accurately controlling the reaction temperature. Therefore, the design can accurately control the reaction temperature and effectively improve the controllability of the toluene refining tower. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of the utility model.
[0029] Figure 2 yes Figure 1Schematic diagram of the structure of the middle and bottom support device.
[0030] Figure 3 yes Figure 2 Schematic diagram of the structure of the connecting ring.
[0031] Figure 4 yes Figure 2 Schematic diagram of the structure of the medium filler support plate.
[0032] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle support ring.
[0033] Figure 6 yes Figure 1 Top view of the middle support ring.
[0034] In the figure: upper shell 1, top plate 11, top discharge port 12, discharge port 13, vent port 14, exhaust port 15, remote thermometer port 16, local thermometer port 17, local pressure gauge port 18, lower shell 2, feed port 21, bottom discharge port 22, public engineering port 23, molecular sieve 3, top support device 4, support ring 41, support bar 42, bottom support device 5, packing support plate 51, connecting ring 52, connecting bar 53, strip hole 54, porcelain ball 6, coarse steel wire mesh 7, fine steel wire mesh 8. DETAILED DESCRIPTION
[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0036] A toluene refining tower with stable filling, comprising: an upper shell 1, a lower shell 2, a molecular sieve 3, a top supporting device 4 and a bottom supporting device 5;
[0037] The upper shell 1 is a vertically arranged circular tube structure, the lower shell 2 is a barrel-shaped structure with the same diameter as the upper shell 1, a top plate 11 is fixedly arranged on the top of the upper shell 1, and the bottom of the upper shell 1 is coaxially sealedly connected with the open end of the lower shell 2;
[0038] A top discharge port 12 and a discharge port 13 are provided on the side wall of the upper shell 1, the top discharge port 12 is provided close to the top of the upper shell 1, the discharge port 13 is provided close to the bottom of the upper shell 1, a vent port 14 and an exhaust port 15 are provided on the top plate 11, a feed port 21 is provided on the side wall of the lower shell 2, and a bottom discharge port 22 is provided at the bottom of the lower shell 2;
[0039] The molecular sieve 3, the top supporting device 4 and the bottom supporting device 5 are all fixedly arranged in the upper shell 1, the molecular sieve 3 is arranged in the middle of the upper shell 1, the top supporting device 4 is arranged close to the top of the upper shell 1, and the bottom supporting device 5 is arranged close to the bottom of the upper shell 1, and a plurality of porcelain balls 6 are arranged in the top supporting device 4 and the bottom supporting device 5.
[0040] The top support device 4 includes a support ring 41, a plurality of support bars 42, a coarse steel wire mesh 7 and a fine steel wire mesh 8. The outer diameter of the support ring 41 is the same as the inner diameter of the upper shell 1. The support ring 41 is fixedly arranged in the upper shell 1 along the horizontal direction. A plurality of support bars 42 are evenly arranged in the support ring 41. The coarse steel wire mesh 7 is fixedly arranged at the bottom of the support ring 41 and each support bar 42. The fine steel wire mesh 8 is arranged directly below the coarse steel wire mesh 7. The fine steel wire mesh 8 is fixedly arranged in the upper shell 1 along the horizontal direction. The apertures of the coarse steel wire mesh 7 and the fine steel wire mesh 8 are both smaller than the particle size of the porcelain ball 6.
[0041] The plurality of support bars 42 are divided into two groups perpendicular to each other, and the two groups of support bars 42 are evenly and fixedly disposed in the upper shell 1 .
[0042] The bottom supporting device 5 includes a filler support plate 51 and a coarse steel wire mesh 7. The filler support plate 51 is a circular orifice plate structure whose outer diameter is the same as the inner diameter of the upper shell 1. The pore size of the filler support plate 51 is smaller than the particle size of the porcelain ball 6. The filler support plate 51 is fixedly arranged in the upper shell 1 along the horizontal direction. The coarse steel wire mesh 7 is arranged directly above the filler support plate 51. The coarse steel wire mesh 7 is fixedly arranged in the upper shell 1 along the horizontal direction. The pore size of the coarse steel wire mesh 7 is smaller than the particle size of the porcelain ball 6.
[0043] The bottom support device 5 further includes a connecting ring 52 and a plurality of connecting strips 53. The outer diameter of the connecting ring 52 is the same as the inner diameter of the upper shell 1. The connecting ring 52 is fixedly arranged in the upper shell 1 along the horizontal direction. A plurality of mutually parallel connecting strips 53 are evenly arranged in the connecting ring 52. The tops of the plurality of connecting strips 53 are fixedly connected to the bottom of the packing support plate 51.
[0044] The filler support plate 51 is evenly provided with a plurality of strip-shaped holes 54 .
[0045] The mesh number of the coarse steel wire mesh 7 is 2 to 6 meshes, and the mesh number of the fine steel wire mesh 8 is 8 to 12 meshes.
[0046] A remote thermometer port 16 and two local thermometer ports 17 are also provided on the side wall of the upper shell 1 . The two local thermometer ports are respectively provided near the two ends of the upper shell 1 , and the two local thermometer ports 17 are both provided on the same side of the upper shell 1 .
[0047] The remote thermometer port 16 is arranged near the bottom of the upper shell 1 . The remote thermometer port 16 and the local thermometer port 17 are arranged on different sides of the upper shell 1 . A local pressure gauge port 18 is also arranged on the top plate 11 .
[0048] A utility port 23 is also provided on the side wall of the lower shell 2 , and the utility port 23 and the feed port 21 are respectively provided on different sides of the lower shell 2 .
[0049] The particle size of the ceramic balls 6 is 5 to 15 mm.
[0050] The principle of the utility model is described as follows:
[0051] In the present design, the top support device 4 and the bottom support device 5 are both provided with a steel wire mesh with a higher mesh number close to the molecular sieve 3, so that when in use, the fine steel wire mesh 8 is used to directly support the molecular sieve 3, and the coarse steel wire mesh 7 is used to support the porcelain ball 6;
[0052] The molecular sieve 3 is a filler with a particle structure.
[0053] Embodiment 1:
[0054] See also Figure 1, a toluene refining tower with stable filling, the toluene refining tower comprises: an upper shell 1, a lower shell 2, a molecular sieve 3, a top support device 4 and a bottom support device 5; the upper shell 1 is a vertically arranged circular tube structure, the lower shell 2 is a barrel-shaped structure with the same diameter as the upper shell 1, a top plate 11 is fixedly arranged on the top of the upper shell 1, and the bottom of the upper shell 1 is coaxially sealed and connected with the open end of the lower shell 2; a top discharge port 12 and a discharge port 13 are arranged on the side wall of the upper shell 1, the top discharge port 12 is arranged close to the top of the upper shell 1, the discharge port 13 is arranged close to the bottom of the upper shell 1, and a venting port 14 and an exhaust port 15 are arranged on the top plate 11, The side wall of the lower shell 2 is provided with a feed port 21, and the bottom of the lower shell 2 is provided with a bottom discharge port 22; the molecular sieve 3, the top support device 4 and the bottom support device 5 are all fixedly arranged in the upper shell 1, the molecular sieve 3 is arranged in the middle of the upper shell 1, the top support device 4 is arranged close to the top of the upper shell 1, and the bottom support device 5 is arranged close to the bottom of the upper shell 1, and a plurality of porcelain balls 6 are arranged in the top support device 4 and the bottom support device 5; the top support device 4 includes a support ring 41, a plurality of support bars 42, a coarse steel wire mesh 7 and a fine steel wire mesh 8, the outer diameter of the support ring 41 is the same as the inner diameter of the upper shell 1, and the support ring 41 is fixed in the horizontal direction. The support ring 41 is fixedly arranged in the upper shell 1, and a plurality of support bars 42 are evenly arranged in the support ring 41. The coarse steel wire mesh 7 is fixedly arranged at the bottom of the support ring 41 and each support bar 42. The fine steel wire mesh 8 is arranged directly below the coarse steel wire mesh 7. The fine steel wire mesh 8 is fixedly arranged in the upper shell 1 along the horizontal direction. The apertures of the coarse steel wire mesh 7 and the fine steel wire mesh 8 are both smaller than the particle size of the porcelain ball 6; the plurality of support bars 42 are divided into two groups perpendicular to each other, and the two groups of support bars 42 are evenly fixed in the upper shell 1; the bottom support device 5 includes a filler support plate 51 and a coarse steel wire mesh 7. The filler support plate 51 is a circular orifice plate structure with the same outer diameter as the inner diameter of the upper shell 1. The aperture of the material support plate 51 is smaller than the particle size of the porcelain ball 6. The filler support plate 51 is fixedly arranged in the upper shell 1 along the horizontal direction. The coarse steel wire mesh 7 is arranged directly above the filler support plate 51. The coarse steel wire mesh 7 is fixedly arranged in the upper shell 1 along the horizontal direction. The aperture of the coarse steel wire mesh 7 is smaller than that of the porcelain ball 6; the bottom support device 5 also includes a connecting ring 52 and a plurality of connecting strips 53. The outer diameter of the connecting ring 52 is the same as the inner diameter of the upper shell 1. The connecting ring 52 is fixedly arranged in the upper shell 1 along the horizontal direction. A plurality of mutually parallel connecting strips 53 are evenly arranged in the connecting ring 52. The tops of the plurality of connecting strips 53 are fixedly connected to the bottom of the filler support plate 51.
[0055] The filler support plate 51 is evenly provided with a plurality of strip-shaped holes 54 .
[0056] Embodiment 2:
[0057] A remote thermometer port 16 and two local thermometer ports 17 are also provided on the side wall of the upper shell 1. The two local thermometer ports are respectively provided near the two ends of the upper shell 1, and the two local thermometer ports 17 are both provided on the same side of the upper shell 1; the remote thermometer port 16 is provided near the bottom of the upper shell 1, and the remote thermometer port 16 and the local thermometer port 17 are provided on different sides of the upper shell 1, and a local pressure gauge port 18 is also provided on the top plate 11; a public engineering port 23 is also provided on the side wall of the lower shell 2, and the public engineering port 23 and the feed port 21 are respectively provided on different sides of the lower shell 2.
[0058] Embodiment 3:
[0059] The mesh number of the coarse steel wire mesh 7 is 2 to 6 meshes, the mesh number of the fine steel wire mesh 8 is 8 to 12 meshes; the particle size of the porcelain ball 6 is 5 to 15 mm.
[0060] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.
Claims
1. A toluene refining tower with stable filling, characterized in that: The toluene refining tower comprises: an upper shell (1), a lower shell (2), a molecular sieve (3), a top support device (4) and a bottom support device (5); The upper shell (1) is a vertically arranged circular tube structure, the lower shell (2) is a barrel-shaped structure having the same diameter as the upper shell (1), a top plate (11) is fixedly arranged on the top of the upper shell (1), and the bottom of the upper shell (1) is coaxially sealedly connected to the open end of the lower shell (2); A top discharge port (12) and a discharge port (13) are provided on the side wall of the upper shell (1); the top discharge port (12) is provided near the top of the upper shell (1); the discharge port (13) is provided near the bottom of the upper shell (1); a venting port (14) and an exhaust port (15) are provided on the top plate (11); a feed port (21) is provided on the side wall of the lower shell (2); and a bottom discharge port (22) is provided at the bottom of the lower shell (2); The molecular sieve (3), the top support device (4) and the bottom support device (5) are all fixedly arranged in the upper shell (1); the molecular sieve (3) is arranged in the middle of the upper shell (1); the top support device (4) is arranged close to the top of the upper shell (1); and the bottom support device (5) is arranged close to the bottom of the upper shell (1); and a plurality of porcelain balls (6) are arranged in the top support device (4) and the bottom support device (5).
2. A toluene refining tower with stable filling according to claim 1, characterized in that: The top support device (4) comprises a support ring (41), a plurality of support bars (42), a coarse steel wire mesh (7) and a fine steel wire mesh (8); the outer diameter of the support ring (41) is the same as the inner diameter of the upper shell (1); the support ring (41) is fixedly arranged in the upper shell (1) along the horizontal direction; a plurality of support bars (42) are evenly arranged in the support ring (41); the coarse steel wire mesh (7) is fixedly arranged at the bottom of the support ring (41) and each support bar (42); the fine steel wire mesh (8) is arranged directly below the coarse steel wire mesh (7); the fine steel wire mesh (8) is fixedly arranged in the upper shell (1) along the horizontal direction; the apertures of the coarse steel wire mesh (7) and the fine steel wire mesh (8) are both smaller than the particle size of the porcelain ball (6).
3. A toluene refining tower with stable filling according to claim 2, characterized in that: The plurality of support bars (42) are divided into two groups that are perpendicular to each other, and the two groups of support bars (42) are evenly and fixedly arranged in the upper shell (1).
4. A toluene refining tower with stable filling according to claim 2, characterized in that: The bottom support device (5) comprises a packing support plate (51) and a coarse steel wire mesh (7); the packing support plate (51) is a circular perforated plate structure having an outer diameter that is the same as the inner diameter of the upper shell (1); the pore size of the packing support plate (51) is smaller than the particle size of the porcelain ball (6); the packing support plate (51) is fixedly arranged in the upper shell (1) along the horizontal direction; the coarse steel wire mesh (7) is arranged directly above the packing support plate (51); the coarse steel wire mesh (7) is fixedly arranged in the upper shell (1) along the horizontal direction; the pore size of the coarse steel wire mesh (7) is smaller than the particle size of the porcelain ball (6).
5. A toluene refining tower with stable filling according to claim 4, characterized in that: The bottom support device (5) further comprises a connecting ring (52) and a plurality of connecting strips (53); the outer diameter of the connecting ring (52) is the same as the inner diameter of the upper shell (1); the connecting ring (52) is fixedly arranged in the upper shell (1) along the horizontal direction; a plurality of mutually parallel connecting strips (53) are evenly arranged in the connecting ring (52); the tops of the plurality of connecting strips (53) are fixedly connected to the bottom of the filler support plate (51); The filler support plate (51) is evenly provided with a plurality of strip-shaped holes (54).
6. A toluene refining tower with stable packing according to any one of claims 2 to 5, characterized in that: The mesh number of the coarse steel wire mesh (7) is 2 to 6 meshes, and the mesh number of the fine steel wire mesh (8) is 8 to 12 meshes.
7. A toluene refining tower with stable packing according to claim 6, characterized in that: A remote temperature gauge port (16) and two local temperature gauge ports (17) are also provided on the side wall of the upper shell (1). The two local temperature gauge ports are respectively provided near two ends of the upper shell (1). The two local temperature gauge ports (17) are both provided on the same side of the upper shell (1).
8. A toluene refining tower with stable packing according to claim 7, characterized in that: The remote temperature gauge port (16) is arranged near the bottom of the upper shell (1), the remote temperature gauge port (16) and the local temperature gauge port (17) are arranged on different sides of the upper shell (1), and a local pressure gauge port (18) is also arranged on the top plate (11).
9. A toluene refining tower with stable packing according to claim 6, characterized in that: A public engineering port (23) is also provided on the side wall of the lower shell (2), and the public engineering port (23) and the feed port (21) are respectively provided on different sides of the lower shell (2).
10. A toluene refining tower with stable packing according to claim 6, characterized in that: The particle size of the porcelain balls (6) is 5 to 15 mm.