Efficient rectification device for leather additive production

Abstract

The utility model relates to the technical field of rectification devices, and discloses an efficient rectification device for leather assistant production, which comprises a rectification tower body, a plurality of sieve plates are fixedly connected in the rectification tower body in a staggered manner, and the left side of the rectification tower body is connected with a reboiler through a circulating pipeline. A feeding pipe is fixedly connected to the left side surface of the rectifying tower body, an arc-shaped shell is fixedly connected to the left side inner wall surface of the rectifying tower body, a reinforcing rod is fixedly connected to the right side inner wall surface of the arc-shaped shell, a liquid distribution filter screen is fixedly connected to the interior of the arc-shaped shell, and an arc-shaped inclined plate is fixedly connected to the bottom of the arc-shaped shell. According to the utility model, through the matching of the arc-shaped shell, the reinforcing rod, the liquid distribution filter screen and the arc-shaped inclined plate, a liquid material entering the rectifying tower body through the feeding pipe can be buffered and decelerated, and the material flows along the tower wall and is more stably blended into a gas-liquid system in the tower, so that a liquid layer on a sieve plate is prevented from being burst open due to direct falling of the liquid.

Description

Technical Field

[0001] This utility model relates to the field of distillation equipment technology, specifically to a high-efficiency distillation device for the production of leather auxiliaries. Background Technology

[0002] Leather auxiliaries are a class of chemical auxiliaries used in the leather production process to improve processing performance, enhance finished product quality, or impart special functions. Some high-performance, high-quality leather auxiliaries, such as leather finishing agents and fatliquoring agents for special purposes, require high purity of their active ingredients. In order to improve the purity and performance stability of the products, it is necessary to use a distillation device for distillation to avoid impurities affecting product performance.

[0003] A search revealed Chinese Patent Publication No. CN222641266U, which discloses a high-efficiency distillation apparatus. This apparatus includes multiple filter plates arranged so that the gas and liquid phases can contact and transfer mass on the filter plates when they flow counter-currently within a distillation tank. This allows for sufficient diffusion of the gas and liquid phases on the filter plates, increasing the contact area between the counter-current phases and facilitating sufficient interphase heat and mass transfer. This allows volatile components in the liquid phase to enter the gas phase, while less volatile components in the gas phase are transferred into the liquid phase, thereby improving distillation efficiency.

[0004] In actual use, when the material enters the distillation column at a certain speed and flow rate, if the feed rate is too fast or the feed method is unreasonable, the material will directly impact the liquid layer on the sieve tray, causing the liquid to be broken up and resulting in uneven liquid distribution. This uneven distribution will disrupt the original liquid layer height and gas-liquid contact state on the tray, affecting the mass transfer efficiency of the gas-liquid two phases. Therefore, a high-efficiency distillation device for the production of leather auxiliaries is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency distillation device for the production of leather auxiliaries with a reasonable structural design.

[0006] The technical solution adopted by this utility model to solve the above problems is: a high-efficiency distillation device for the production of leather auxiliaries, including a distillation column body, wherein several sieve plates are fixedly connected in an alternating pattern inside the distillation column body, a reboiler is connected to the left side of the distillation column body through a circulation pipe, an exhaust pipe is fixedly connected to the upper end of the distillation column body, a feed pipe is fixedly connected to the left side surface of the distillation column body, an arc-shaped shell is fixedly connected to the left inner wall surface of the distillation column body, a reinforcing rod is fixedly connected to the right inner wall surface of the arc-shaped shell, a liquid distribution filter is fixedly connected to the inside of the arc-shaped shell, an arc-shaped inclined plate is fixedly connected to the bottom of the arc-shaped shell, an arc-shaped groove is opened on the outer wall of the sieve plate, and an arc-shaped overflow shell is fixedly connected to the inside of the arc-shaped groove.

[0007] As a further description of the above technical solution:

[0008] The arc-shaped housing is located on the right side of the feed pipe.

[0009] As a further description of the above technical solution:

[0010] The upper surface of the arc-shaped shell is inclined downwards towards the center of the distillation column.

[0011] As a further description of the above technical solution:

[0012] The left end of the reinforcing rod is fixedly connected to the inner wall surface of the distillation column.

[0013] As a further description of the above technical solution:

[0014] The curved inclined plate is inclined downward on the side closest to the inner wall of the distillation column.

[0015] As a further description of the above technical solution:

[0016] There is a gap between the side of the curved inclined plate near the inner wall of the distillation column and the inner wall of the distillation column.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the arc-shaped overflow shell is in close contact with the inner wall of the distillation column, and the upper surface of the arc-shaped overflow shell is higher than the upper surface of the sieve plate.

[0019] As a further description of the above technical solution:

[0020] The bottom end of the arc-shaped overflow shell is fixedly connected to a guide plate. The guide plate is inclined downward on the side near the inner wall of the distillation column and there is a gap between the guide plate and the inner wall of the distillation column.

[0021] Compared with the prior art, this utility model has the following advantages and effects:

[0022] 1. In this utility model, the combination of the arc-shaped shell, reinforcing rod, liquid distribution filter screen and arc-shaped inclined plate can buffer and decelerate the liquid material entering the distillation column through the feed pipe, and make the material flow along the column wall, so as to integrate more smoothly into the gas-liquid system in the column. This avoids the liquid falling directly and causing it to break the liquid layer on the screen plate, reduces the damage to the gas-liquid balance, and is conducive to the stable operation of the distillation process and improves the distillation efficiency.

[0023] 2. In this utility model, the combination of the arc-shaped overflow shell and the guide plate can buffer and slow down the overflowing liquid layer on the sieve plate, preventing the overflowing part from directly hitting the lower sieve plate and causing the liquid layer on the lower sieve plate to be washed away, thus affecting the distillation efficiency. At the same time, the arc-shaped structure of the arc-shaped overflow shell can reduce the area occupied by the sieve plate, expand the usable area of ​​the sieve plate, and maintain the original overflow effect, thereby improving the distillation efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0025] Figure 2 This is a structural schematic diagram showing a cross-sectional view of the front part of the distillation column body according to an embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the arc-shaped shell in an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the disassembled sieve plate in an embodiment of the present invention.

[0028] Legend:

[0029] 1. Distillation column body; 2. Sieve plate; 3. Reboiler; 4. Exhaust pipe; 5. Feed pipe; 6. Arc-shaped shell; 7. Reinforcing rod; 8. Liquid distribution filter screen; 9. Arc-shaped inclined plate; 10. Arc-shaped groove; 11. Arc-shaped overflow shell; 12. Flow guide inclined plate. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0031] See Figures 1-2This utility model provides an embodiment of a high-efficiency distillation device for the production of leather auxiliaries, comprising a distillation column 1, with several sieve plates 2 fixedly connected in an alternating pattern inside the distillation column 1. A reboiler 3 is connected to the left side of the distillation column 1 via a circulation pipe. An exhaust pipe 4 is fixedly connected to the upper end of the distillation column 1, and a feed pipe 5 is fixedly connected to the left surface of the distillation column 1. After the liquid material is added into the interior of the distillation column 1 through the feed pipe 5, a liquid layer of a certain thickness is formed on the sieve plates 2. Under the pressure difference, the gas moves upward from the bottom of the column, passes through the sieve holes on each layer of sieve plates 2 in sequence, disperses into small streams of gas, bubbles through the liquid layer of each layer of sieve plates 2, and is finally discharged from the exhaust pipe 4. The reboiler 3 can extract the liquid phase at the bottom of the distillation column 1 for heating and discharge the gas phase formed after heating back into the interior of the distillation column 1 for distillation treatment. When the gas rises through the sieve holes, the gas and liquid phases are in close contact and exchange heat. Due to temperature differences, heat transfer occurs between the gas and liquid, causing the temperatures of the two phases to gradually approach each other, thereby achieving heat transfer and equilibrium. During the gas-liquid contact process, due to the concentration differences of each component in the gas and liquid phases, mass transfer occurs. The more volatile components (lighter components) in the liquid phase vaporize and enter the gas phase, while the less volatile components (heavier components) in the gas phase condense and enter the liquid phase, thus realizing the exchange and separation of matter between the gas and liquid phases. The above structure is a prior art in this field and will not be described in detail here.

[0032] See Figures 2-4 An arc-shaped shell 6 is fixedly connected to the inner left side of the distillation column 1. The arc-shaped shell 6 is located directly to the right of the feed pipe 5. The upper part of the arc-shaped shell 6 is sealed. When liquid material enters the interior of the distillation column 1 through the feed pipe 5, it will completely enter the arc-shaped shell 6 and flow through the bottom of the arc-shaped shell 6 to the sieve plate 2 located below it. The upper surface of the arc-shaped shell 6 is inclined downwards towards the center of the distillation column 1. A reinforcing rod 7 is fixedly connected to the inner right side of the arc-shaped shell 6. The left end of the reinforcing rod 7 is connected to the inner left side of the distillation column 1. The inner wall surface is fixedly connected, and the reinforcing rod 7 can further fix and limit the arc-shaped shell 6, and improve the stability of the arc-shaped shell 6, reducing the risk of deformation and damage to the arc-shaped shell 6 under liquid impact. The inside of the arc-shaped shell 6 is fixedly connected with a liquid distribution filter screen 8. The liquid distribution filter screen 8 can buffer and decelerate the material entering the arc-shaped shell 6 and flowing downward, and make the liquid evenly distributed through the liquid distribution filter screen 8, so that the liquid material can flow downward through the entire space at the bottom of the arc-shaped shell 6 and be discharged, improving the feeding efficiency.

[0033] An arc-shaped inclined plate 9 is fixedly connected to the bottom of the arc-shaped shell 6. The side of the arc-shaped inclined plate 9 closest to the inner wall of the distillation column 1 is inclined downwards. There is a gap between the side of the arc-shaped inclined plate 9 closest to the inner wall of the distillation column 1 and the inner wall of the distillation column 1. The front and rear sides of the bottom of the arc-shaped shell 6 are in contact with the upper surface of the arc-shaped inclined plate 9. When the liquid is decelerated and buffered by the liquid distribution filter 8 and falls evenly, most of it will flow onto the arc-shaped inclined plate 9, and then flow along the inclined surface of the arc-shaped inclined plate 9 through the gap to the inner wall of the distillation column 1. A small portion of the liquid will flow directly down the inner wall of the distillation column 1 through the gap to the sieve plate 2. This reduces the impact force when the liquid falls, allowing the liquid material to directly flow into the liquid layer on the sieve plate 2, avoiding direct impact on the liquid layer on the sieve plate 2, thus reducing the possibility of the liquid being washed away and helping to maintain the stability and uniformity of the liquid layer on the sieve plate 2.

[0034] The outer wall of the sieve plate 2 is provided with an arc-shaped groove 10, and an arc-shaped overflow shell 11 is fixedly connected inside the arc-shaped groove 10. The outer wall of the arc-shaped overflow shell 11 is in close contact with the inner wall of the distillation column body 1. The upper surface of the arc-shaped overflow shell 11 is higher than the upper surface of the sieve plate 2. When the liquid material flows onto the sieve plate 2 and forms a liquid layer, as the liquid level rises, it will overflow downwards through the arc-shaped overflow shell 11 to the next layer of sieve plate 2. Compared with the commonly used overflow plate, the arc-shaped overflow shell 11 can expand the usable area of ​​the sieve plate 2 and maintain the original overflow effect, thereby improving the distillation efficiency.

[0035] See Figures 3-4 A guide plate 12 is fixedly connected to the bottom end of the arc-shaped overflow shell 11. The guide plate 12 is inclined downward on the side near the inner wall of the distillation column 1 and there is a gap between it and the inner wall of the distillation column 1. The effect of the guide plate 12 is similar to that of the arc-shaped plate 9. It can buffer the liquid overflowing and falling through the arc-shaped overflow shell 11 and allow the liquid to flow downward along the inner wall of the distillation column 1, reducing the impact of the downward overflowing liquid on the liquid layer on the lower sieve plate 2 and reducing the disruption of the gas-liquid balance.

[0036] Working principle: When the liquid material enters the interior of the distillation column 1 through the feed pipe 5, it will completely enter the interior of the arc-shaped shell 6 and flow downward along the internal space of the arc-shaped shell 6. Then the liquid will flow to the liquid distribution filter screen 8 for buffering and deceleration, and be evenly distributed. Then the liquid will continue to fall to the arc-shaped inclined plate 9. A small part of the liquid will slide directly down the inner wall of the distillation column 1 through the gap between the arc-shaped inclined plate 9 and the inner wall of the distillation column 1, while most of the liquid will be further buffered and decelerated along the inclined surface of the arc-shaped inclined plate 9, and then slide down the inner wall of the distillation column 1 through the gap to the sieve plate 2 below. This avoids direct impact on the liquid layer on the sieve plate 2, thereby reducing the possibility of the liquid layer being washed away.

[0037] After the liquid flows onto the sieve plate 2 and forms a liquid layer, as the liquid level rises, the liquid overflows at the arc-shaped overflow shell 11 onto the lower sieve plate 2. When the liquid overflows into the arc-shaped overflow shell 11, it falls onto the guide plate 12 for buffering and deceleration, allowing the liquid to flow downwards along the inner wall of the distillation column 1, reducing the disruption to the gas-liquid balance and further improving the distillation efficiency. Then, the reboiler 3 can be started to heat the liquid phase at the bottom of the distillation column 1, forming a gas phase which is then discharged back into the interior of the distillation column 1 for distillation.

[0038] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A high-efficiency rectification device for leather auxiliary production, comprising a rectification tower body (1), characterized in that: The interior of the distillation column (1) is fixedly connected with several sieve plates (2) in an alternating pattern. The left side of the distillation column (1) is connected to a reboiler (3) through a circulation pipe. The upper end of the distillation column (1) is fixedly connected with an exhaust pipe (4). The left side surface of the distillation column (1) is fixedly connected with a feed pipe (5). The left inner wall surface of the distillation column (1) is fixedly connected with an arc-shaped shell (6). The right inner wall surface of the arc-shaped shell (6) is fixedly connected with a reinforcing rod (7). The interior of the arc-shaped shell (6) is fixedly connected with a liquid distribution filter screen (8). The bottom of the arc-shaped shell (6) is fixedly connected with an arc-shaped inclined plate (9). The outer wall of the sieve plate (2) is provided with an arc-shaped groove (10). The interior of the arc-shaped groove (10) is fixedly connected with an arc-shaped overflow shell (11).

2. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The arc-shaped shell (6) is located on the right side of the feed pipe (5).

3. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The upper surface of the arc-shaped shell (6) is inclined downward toward the center of the distillation column (1).

4. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The left end of the reinforcing rod (7) is fixedly connected to the inner wall surface of the distillation column (1).

5. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The arc-shaped inclined plate (9) is inclined downward on the side near the inner wall of the distillation column (1).

6. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: There is a gap between the side of the arc-shaped inclined plate (9) near the inner wall of the distillation column (1) and the inner wall of the distillation column (1).

7. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The outer wall of the arc-shaped overflow shell (11) is in contact with the inner wall of the distillation column (1), and the upper surface of the arc-shaped overflow shell (11) is higher than the upper surface of the sieve plate (2).

8. The high-efficiency rectifying device for leather auxiliary production according to claim 1, characterized in that: The bottom end of the arc-shaped overflow shell (11) is fixedly connected to a flow guide plate (12). The flow guide plate (12) is inclined downward on the side near the inner wall of the distillation column (1) and there is a gap between it and the inner wall of the distillation column (1).

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