Tower plate for n-butane rectifying tower

Abstract

The utility model discloses a tower plate for an n-butane rectifying tower. The tower plate comprises a supporting plate, an arc-shaped diversion trench plate is arranged at one end of the upper surface of the supporting plate, a strip-shaped drainage groove is formed in the side, close to the supporting plate, of the outer side face of the arc-shaped diversion trench plate, cylindrical air guide cylinders are arranged on the upper surface of the supporting plate in an array mode, cover bubbles are installed on the cylindrical air guide cylinders, and an overflow plate is arranged at the end, away from the arc-shaped diversion trench plate, of the upper surface of the supporting plate; according to the tower plate for the n-butane rectifying tower, steam ejected from the discharge hole in the outer surface of the hollow outer cover is fan-shaped, so that the steam can be in full contact with mixed liquid on the upper surface of the tower plate, and the heat exchange efficiency is effectively improved; the mixed liquid on the upper layer overflows through the overflow plate on the upper layer and then falls into the arc-shaped flow guide groove plate on the lower layer, the mixed liquid forms a liquid layer with a certain height on the upper surface of the supporting plate, high-temperature steam is jetted out through the outer side face of the cover bubble, the mixed liquid makes contact with the high-temperature steam, and n-butane in the mixed liquid is gasified and then discharged through the tower top of the rectifying tower.

Description

Technical Field

[0001] This application relates to the technical field of n-butane rectification, specifically to a tray for an n-butane rectification column. Background Art

[0002] The raw material for n-butane rectification is a mixture, usually containing components such as n-butane, n-propane, and isobutane. The mixture needs to be heated by a pretreatment device before feeding to ensure the appropriate temperature and pressure when entering the rectification column. The mixture enters the rectification column, and trays are arranged inside the column to increase the contact area and promote the full contact and mass transfer of steam and liquid.

[0003] In the rectification column, high-temperature steam enters the interior of the rectification column from the bottom of the column. The gas and the mixture come into full contact at the tray. Light components such as n-butane absorb heat and vaporize, then enter the condenser through the top pipe of the column. N-butane condenses first at a lower temperature and is collected. Part of the n-butane recovered from the top of the column can be used as reflux, and part of it is refluxed to the top of the column to improve the separation efficiency.

[0004] Bubble-cap trays are mostly used for the trays of n-butane rectification columns. However, when using bubble-cap trays, the gas phase and the liquid phase only contact near the exhaust holes at the bottom of the bubble cap. Therefore, the heat transfer efficiency between the gas phase and the liquid phase is not high. Utility Model Content

[0005] This application provides a tray for an n-butane rectification column. The steam flow sprayed on the upper surface of the tray is in a rotating radiation shape, enabling the steam to fully contact the mixed liquid, effectively improving the heat transfer efficiency, and effectively solving the problems in the background art.

[0006] To achieve the above object, this application provides the following technical solution: A tray for an n-butane rectification column, including a supporting plate; one end of the upper surface of the supporting plate is provided with an arc-shaped flow guiding groove plate, a strip-shaped liquid drainage groove is arranged on the outer side of the arc-shaped flow guiding groove plate close to the supporting plate, cylindrical air guiding cylinders are arranged in an array on the upper surface of the supporting plate, bubble caps are installed on the cylindrical air guiding cylinders, and an overflow plate is arranged at one end of the upper surface of the supporting plate away from the arc-shaped flow guiding groove plate.

[0007] The bubble cap includes a hollow outer cover. The lower surface of the hollow outer cover is closely arranged against the upper surface of the supporting plate, and the lower surface of the hollow outer cover does not contact the upper surface of the supporting plate. Liquid discharge ports are evenly distributed around the outer side of the hollow outer cover, and flow guiding vanes are arranged on the outer side of the hollow outer cover near the liquid discharge ports.

[0008] Preferably, the upper surface of the arc-shaped flow guiding groove plate is open.

[0009] Preferably, both ends of the cylindrical air guiding cylinder are open, and the lower end surface of the cylindrical air guiding cylinder is connected to the lower surface of the supporting plate.

[0010] Preferably, the liquid discharge port is in a water droplet shape with a narrow upper part and a wide lower part.

[0011] Preferably, the guide vane is arranged at a certain angle with the hollow outer cover.

[0012] Preferably, a horn-shaped diffuser cover is provided on the upper end surface of the cylindrical air guide cylinder, a support rod is installed on the inner side surface of the cylindrical air guide cylinder, the support rod is connected with a screw through a stainless steel spring piece arranged on its outer side surface, an installation hole is provided in the middle of the upper surface of the hollow outer cover, the screw passes through the installation hole, and the screw is fixed on the hollow outer cover through a nut.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows:

[0014] 1. For the tray used in the n-butane rectification column of the present application, the steam ejected from the discharge port on the outer surface of the hollow outer cover is in a fan shape, so that the steam can fully contact the mixed liquid on the upper surface of the tray, effectively improving the heat exchange efficiency;

[0015] 2. The mixed liquid on the upper layer overflows through the overflow plate on the upper layer and then falls into the inner part of the arc-shaped diversion trough plate on the lower layer. The mixed liquid forms a liquid layer with a certain height on the upper surface of the supporting plate. The high-temperature steam is ejected from the outer side surface of the bubble cover. The mixed liquid contacts the high-temperature steam, and the n-butane in the mixed liquid is vaporized and then discharged from the top of the rectification column;

[0016] 3. After the high-temperature steam is discharged through the cylindrical air guide cylinder, it enters the inside of the hollow outer cover, and finally is ejected through the discharge port provided on the outer side surface of the hollow outer cover. The steam ejected from the discharge port is guided by the guide vane and spreads out in a fan-shaped rotation, effectively expanding the contact area between the high-temperature steam and the mixed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present application;

[0018] Figure 2 It is the front view of the present application;

[0019] Figure 3 It is the top view of the present application;

[0020] Figure 4 It is a schematic structural diagram of the bubble cover;

[0021] Figure 5 It is an installation schematic diagram of the cylindrical air guide cylinder and the bubble cover.

[0022] In the figure: 1 arc-shaped diversion trough plate, 2 strip-shaped liquid discharge trough, 3 bubble cover, 31 hollow outer cover, 32 installation hole, 33 guide vane, 34 discharge port, 4 overflow plate, 5 supporting plate, 61 horn-shaped diffuser cover, 62 screw, 63 stainless steel spring piece, 64 support rod, 65 cylindrical air guide cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0024] In the description of the present application, if it involves orientation description, when a feature is referred to as "arranged", "fixed", or "connected" to another feature, it can be directly arranged, fixed, or connected to the other feature, or indirectly arranged, fixed, or connected to the other feature.

[0025] Please refer to Figures 1-5 , the present application provides the following technical solutions: a tray for a n-butane rectification column, including a supporting plate 5; one end of the upper surface of the supporting plate 5 is provided with an arc-shaped flow guiding groove plate 1, a strip-shaped liquid discharge groove 2 is arranged on the outer side of the arc-shaped flow guiding groove plate 1 close to the supporting plate 5, cylindrical air guiding cylinders 65 are arranged in an array on the upper surface of the supporting plate 5, a bubble cap 3 is installed on the cylindrical air guiding cylinder 65, and an overflow plate 4 is arranged at the end of the upper surface of the supporting plate 5 away from the arc-shaped flow guiding groove plate 1.

[0026] Specifically, the mixed liquid in the upper layer overflows through the overflow plate 4 in the upper layer and then falls into the inner part of the arc-shaped flow guiding groove plate 1 in the lower layer. The mixed liquid forms a liquid layer with a certain height on the upper surface of the supporting plate 5. The high-temperature steam is ejected from the outer side of the bubble cap 3. The mixed liquid contacts the high-temperature steam, and the n-butane in the mixed liquid vaporizes and is discharged from the top of the rectification column.

[0027] The bubble cap 3 includes a hollow outer cover 31. The lower surface of the hollow outer cover 31 is closely arranged against the upper surface of the supporting plate 5, the lower surface of the hollow outer cover 31 does not contact the upper surface of the supporting plate 5, discharge ports 34 are evenly distributed around the outer side of the hollow outer cover 31, and flow guiding vanes 33 are arranged on the outer side of the hollow outer cover 31 close to the discharge ports 34.

[0028] Specifically, the high-temperature steam is discharged through the cylindrical air guiding cylinder 65 and then enters the inside of the hollow outer cover 31, and finally is ejected through the discharge ports 34 arranged on the outer side of the hollow outer cover 31. The steam ejected from the discharge ports 34 is guided by the flow guiding vanes 33 and spreads out in a fan-shaped rotation, effectively expanding the contact area between the high-temperature steam and the mixed liquid.

[0029] More specifically, there is a certain distance between adjacent air outlets on the outer surface of the traditional bubble cap, so that the high-temperature steam discharged through the air outlets cannot fully contact the mixed liquid around the traditional bubble cap.

[0030] Further, the upper surface of the arc-shaped flow guiding groove plate 1 is provided with an open mouth.

[0031] Specifically, the open setting facilitates the inflow of the upper-layer mixed liquid.

[0032] Furthermore, both ends of the cylindrical air guide cylinder 65 are open, and the lower end surface of the cylindrical air guide cylinder 65 is in contact with the lower surface of the support plate 5.

[0033] Specifically, the cylindrical air guide cylinder 65 is used for the gas circulation between the upper and lower layers of the support plate 5. At the same time, the cylindrical air guide cylinder 65 protrudes from the support plate 5, so that the mixed liquid can form a liquid layer with a certain height on the upper surface of the support plate 5.

[0034] Furthermore, the discharge port 34 is in the shape of a water droplet with a narrow upper part and a wide lower part.

[0035] Specifically, the water droplet shape can effectively reduce the pressure drop of the steam flowing through the discharge port 34.

[0036] Furthermore, the guide vane 33 is arranged at a certain angle with the hollow outer cover 31.

[0037] Specifically, after the gas contacts the guide vane 33, it can rotate and leave, thus effectively improving the gas-liquid mixing property.

[0038] Furthermore, a horn-shaped flow expansion cover 61 is provided on the upper end surface of the cylindrical air guide cylinder 65. A support rod 64 is installed on the inner side surface of the cylindrical air guide cylinder 65. The support rod 64 is connected to a screw rod 62 through a stainless steel spring sheet 63 provided on its outer side surface. A mounting hole 32 is provided in the middle of the upper surface of the hollow outer cover 31. The screw rod 62 passes through the mounting hole 32 and is fixed on the hollow outer cover 31 through a nut.

[0039] Specifically, the horn-shaped flow expansion cover 61 can play a role in expanding the flow, so that the steam can be evenly diffused. The setting of the screw rod 62 facilitates the disassembly and assembly of the hollow outer cover 31. If the steam pressure is too high, the gas can push up the hollow outer cover 31, so that the gas can be quickly discharged through the opening below the hollow outer cover 31.

[0040] More specifically, the stainless steel spring sheet 63 is formed by splicing two inclined U-shaped spring plates. The lower surface of the stainless steel spring sheet 63 is fixed on the support rod 64 through bolts, and the upper surface of the stainless steel spring sheet 63 is connected to the lower end of the outer side surface of the screw rod 62 through a nut.

[0041] In use: Install no less than two of this device on the rectifying section of the rectifying column. After rotating the two adjacent pedals above and below by 180 degrees, install them. Make the overflow plate 4 of the upper tray located directly above the arc-shaped flow guiding trough plate 1 of the lower tray. High-temperature steam enters through the bottom of the rectifying column, and the mixed liquid enters the rectifying column through the liquid inlet in the middle of the rectifying column. The steam enters the interior of the hollow outer cover 31 through the cylindrical air guiding cylinder 65 at the bottom of the supporting plate 5, and finally sprays out through the discharge port 34 provided on the outer side surface of the hollow outer cover 31. At this time, the guide vane 33 guides the air flow to rotate and rise around the cylindrical air guiding cylinder 65.

[0042] The mixed liquid flows onto the supporting plate 5 through the arc-shaped flow guiding trough plate 1, and finally overflows through the overflow plate 4 and flows into the next layer. At this time, a liquid layer of a certain height is formed on the upper surface of the supporting plate 5. The steam sprayed out through the discharge port 34 contacts the mixed liquid, and the n-butane in the mixed liquid absorbs heat and vaporizes, and is discharged through the gas collecting hood at the top of the rectifying column and enters the condenser.

[0043] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tray for a normal butane distillation tower, characterized in that: The invention comprises a support plate (5); an arc-shaped flow guide plate (1) is provided at one end of the upper surface of the support plate (5); a strip-shaped liquid drainage groove (2) is provided on the outer side surface of the arc-shaped flow guide plate (1) close to the support plate (5); a columnar air guide cylinder (65) is arranged in an array on the upper surface of the support plate (5); a cover bubble (3) is installed on the columnar air guide cylinder (65); and an overflow plate (4) is provided at one end of the upper surface of the support plate (5) away from the arc-shaped flow guide plate (1); The bubble cover (3) comprises a hollow outer cover (31), the lower surface of the hollow outer cover (31) is arranged in close proximity to the upper surface of the support plate (5), the lower surface of the hollow outer cover (31) does not contact the upper surface of the support plate (5), the outer side surface of the hollow outer cover (31) is evenly distributed with discharge ports (34) around, and the outer side surface of the hollow outer cover (31) is provided with guide vanes (33) near the discharge ports (34).

2. The tray for n-butane distillation tower according to claim 1, characterized in that: The upper surface of the arc-shaped guide channel plate (1) is open.

3. The tray for n-butane distillation tower according to claim 1, characterized in that: Both ends of the columnar air guide cylinder (65) are open, and the lower end surface of the columnar air guide cylinder (65) is connected to the lower surface of the support plate (5).

4. The tray for n-butane distillation tower according to claim 1, characterized in that: The discharge port (34) is in the shape of a water drop that is narrow at the top and wide at the bottom.

5. The tray for n-butane distillation tower according to claim 1, characterized in that: The guide blades (33) are arranged at a certain angle to the hollow outer cover (31).

6. The tray for n-butane distillation tower according to claim 1, characterized in that: The upper end surface of the columnar air guide cylinder (65) is provided with a horn diffuser (61), the inner side surface of the columnar air guide cylinder (65) is provided with a support rod (64), the support rod (64) is connected to a screw rod (62) via a stainless steel spring sheet (63) provided on the outer side surface thereof, a mounting hole (32) is provided in the middle of the upper surface of the hollow outer cover (31), the screw rod (62) is arranged through the mounting hole (32), and the screw rod (62) is fixed to the hollow outer cover (31) via a nut.

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