A high-efficiency perforated plate rectifying column

Abstract

The present application belongs to rectification device technical field, especially, relate to a kind of orifice plate high-efficiency rectification tower.The bottom of the U-shaped tray is movably inserted with several inverted venting horn seats, and the rim of the venting horn seat is connected with the bottom of the U-shaped tray by connecting spring, the upper end of the venting horn seat is connected with bubble cap by connecting support, the lower end of the bubble cap is attached to the inner surface of the U-shaped tray, and the upper end of each bubble cap is connected with a flow limiting plate by connecting column, the flow limiting plate is provided with inclined through holes distributed in seal;adjacent U-shaped trays are connected by liquid downcomer on one side;the combination of venting horn seat and bubble cap is lifted by the rising steam in the rectification tower, realizing the efficient aeration distillation structure of bubble cap.It adopts the structure of special float valve tray, can freely adjust the bubble cap structure on the tray according to the change of the pressure of rising steam, and relieve the rising steam pressure by increasing air outlet.

Description

Technical Field

[0001] This invention belongs to the field of distillation equipment technology, and in particular relates to a high-efficiency orifice plate distillation column. Background Technology

[0002] A distillation column is a tower-type vapor-liquid contact device used for distillation. It separates liquids by utilizing the flow of liquids and the rise of gases. Currently, distillation columns generally have a simple tray structure. However, during the distillation process, due to the different distribution of each tray, the rising vapor pressure on each tray is not stable. Increased vapor pressure can easily lead to an increase in the evaporation temperature of the tray, affecting the distillation quality. Repeated evaporation is required, which reduces the distillation efficiency. Summary of the Invention

[0003] To address the shortcomings and deficiencies of existing technologies, the present invention aims to provide a simple, rationally designed, and easy-to-use orifice plate high-efficiency distillation column. It adopts a specially structured floating valve plate structure, which can freely adjust the bubble cap structure on the plate according to the pressure changes of rising steam. By increasing the number of vent holes, it alleviates the problem of rising steam pressure and avoids the problem of excessive steam pressure affecting distillation efficiency and quality.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a distillation column and a distillation tray. The distillation tray includes a U-shaped tray, a connecting spring, a venting horn seat, a connecting bracket, a bubble cap, a vent groove, a connecting column, a flow restrictor, oblique through holes, and a downcomer channel. Several inverted venting horn seats are movably inserted into the bottom of the U-shaped tray, and the ears of the venting horn seats are connected to the bottom of the U-shaped tray through the connecting spring. A bubble cap is connected to the upper end of the venting horn seat through the connecting bracket. The lower end of the bubble cap is attached to the inner surface of the U-shaped tray, and the upper end of each bubble cap is connected to the flow restrictor through the connecting column. The flow restrictor is provided with obliquely distributed sealing through holes. Adjacent U-shaped trays are connected by a downcomer channel on one side. The combination of the venting horn seat and the bubble cap is lifted up by the rising steam in the distillation column, realizing a highly efficient aeration distillation structure for the bubble cap.

[0005] Preferably, the inclined direction of the oblique through hole on the surface of the flow restrictor plate is consistent with the direction of liquid flow.

[0006] Preferably, the distance A between the flow restrictor and the bottom plate of the U-shaped tray increases as the rising steam pressure of the distillation column increases.

[0007] Preferably, the lugs on both sides of the U-shaped tray are fitted with the downcomer channel to realize the reserved structure of the downcomer channel.

[0008] Preferably, the upper outer side of the blister pack is provided with a ring of air holes, and the lower end of the blister pack is a smooth surface to achieve a sealed fit between the blister pack and the U-shaped tray.

[0009] With the above structure, the beneficial effects of this invention are as follows: it adopts a special floating valve tray structure, which can freely adjust the bubble cap structure on the tray according to the pressure change of the rising steam, and alleviate the rising steam pressure by increasing the vent holes, thus avoiding the problem of excessive steam pressure affecting the distillation efficiency and distillation quality. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be described in detail below with reference to specific implementations and accompanying drawings.

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a top view of the U-shaped tower plate 1 of the present invention;

[0013] Figure 3 This is a schematic diagram of the bubble cap 5 in the lifted state of the present invention;

[0014] Figure 4 This is the overall structure of the float valve of the present invention.

[0015] Explanation of reference numerals in the attached diagram: 1. U-shaped tray; 2. Connecting spring; 3. Vent horn seat; 4. Connecting bracket; 5. Bubble cap; 6. Vent groove; 7. Connecting column; 8. Flow restrictor; 9. Angled through hole; 10. Downcomer channel. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0017] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0018] See as Figures 1-4 As shown, this specific embodiment adopts the following technical solution: it includes a distillation column and a distillation column plate, wherein the distillation column plate includes a U-shaped column plate 1, a connecting spring 2, a venting horn seat 3, a connecting bracket 4, a bubble cap 5, a venting groove 6, a connecting column 7, a flow limiting plate 8, an inclined through hole 9, and a downcomer channel 10.

[0019] The bottom of the U-shaped tower plate 1 is movably interspersed with several inverted vent horn seats 3, and the ears of the vent horn seats 3 are connected to the bottom of the U-shaped tower plate 1 through connecting springs 2. The upper end of the vent horn seats 3 is connected to a bubble cover 5 through a connecting bracket 4. The lower end of the bubble cover 5 is attached to the inner surface of the U-shaped tower plate 1, and the upper end of each bubble cover 5 is connected to a flow limiting plate 8 through a connecting post 7. The flow limiting plate 8 is provided with obliquely distributed sealing through holes 9.

[0020] Adjacent U-shaped trays 1 are connected by a downcomer channel 10 on one side; the combination of the venting horn seat 3 and the bubble cap 5 is lifted up by the rising steam in the distillation column, realizing the efficient aeration distillation structure of the bubble cap 5.

[0021] The inclined through-holes 9 on the surface of the flow-limiting plate 8 are aligned with the direction of liquid flow. These inclined through-holes 9 alter the direction of steam rise, increasing the overflow velocity of excess fluid on the surface of the flow-limiting plate 8. The distance A between the flow-limiting plate 8 and the bottom plate of the U-shaped tray 1 increases with the increase of the rising steam pressure in the distillation column. When the rising steam pressure in the distillation column exceeds the limit of the connecting spring 2, the combination of the vent horn seat 3 and the bubble cap 5 is lifted, creating an additional vent at the bottom of the bubble cap 5 and the bottom plate of the U-shaped tray 1. Simultaneously, the flow-limiting plate 8 is also lifted, increasing the liquid flow rate between the flow-limiting plate 8 and the bottom plate of the U-shaped tray 1, reducing the risk of increased evaporation temperature.

[0022] In addition, the ears on both sides of the U-shaped tray 1 cooperate with the downcomer channel 10 to realize the reserved structure of the downcomer channel 10; a ring of air vent grooves 6 is provided on the outer side of the upper end of the bubble cap 5, and the lower end of the bubble cap 5 is a smooth plane to realize the sealing and bonding between the bubble cap 5 and the U-shaped tray 1.

[0023] The working principle of this specific embodiment is as follows: High-temperature steam enters through the bottom of the distillation column. However, due to the layered distribution of the trays inside the distillation column from top to bottom, the steam pressure on the upper and lower trays is inconsistent. Furthermore, the high-temperature steam pressure is constantly changing due to various factors. When the steam pressure increases, and the rising steam pressure exceeds the limits of the connecting spring 2 and the self-weight of the float valve, the assembly of the venting horn seat 3 and the bubble cap 5 is lifted, causing the lower end of the bubble cap 5 to separate from the bottom plate of the U-shaped tray 1. An outlet is formed at the lower end of the bubble cap 5, increasing the steam exhaust port to alleviate the rising steam pressure. Simultaneously, the flow restrictor 8 is also lifted, increasing the distance A between the flow restrictor 8 and the bottom plate of the U-shaped tray 1, thereby increasing the liquid flow rate in contact with the bubble cap 5 and solving the problem of increased evaporation temperature caused by rising steam pressure. After the steam pressure stabilizes, the assembly of the venting horn seat 3 and the bubble cap 5 returns to its original position with the cooperation of the connecting spring 2.

[0024] This specific embodiment employs a specially structured floating valve tray, which can freely adjust the bubble cap structure on the tray according to changes in the pressure of the rising steam. By increasing the number of vent holes, the rising steam pressure is alleviated, thus avoiding the problem of excessively high steam pressure affecting distillation efficiency and quality.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A high-efficiency orifice plate distillation column, characterized in that: It includes a distillation column and distillation trays, wherein the distillation trays include a U-shaped tray (1), a connecting spring (2), a venting horn seat (3), a connecting bracket (4), a bubble cap (5), a venting groove (6), a connecting column (7), a flow restrictor (8), an inclined through hole (9), and a downcomer channel (10). The bottom of the U-shaped tower plate (1) is movably interspersed with several inverted venting horn seats (3), and the ears of the venting horn seats (3) are connected to the bottom of the U-shaped tower plate (1) through connecting springs (2). The upper end of the venting horn seats (3) is connected to a bubble cover (5) through a connecting bracket (4). The lower end of the bubble cover (5) is attached to the inner surface of the U-shaped tower plate (1), and the upper end of each bubble cover (5) is connected to a flow restrictor plate (8) through a connecting post (7). The flow restrictor plate (8) is provided with densely distributed oblique through holes (9). Adjacent U-shaped trays (1) are connected by a downcomer channel (10) on one side; the combination of the venting horn seat (3) and the bubble cap (5) is lifted by the rising steam in the distillation column, realizing the efficient aeration distillation structure of the bubble cap (5).

2. The high-efficiency orifice plate distillation column according to claim 1, characterized in that: The inclined direction of the oblique through hole (9) on the surface of the flow limiting plate (8) is consistent with the direction of liquid flow.

3. The high-efficiency orifice plate distillation column according to claim 1, characterized in that: The distance (A) between the flow restrictor (8) and the bottom plate of the U-shaped tray (1) increases as the steam pressure of the distillation column increases.

4. The high-efficiency orifice plate distillation column according to claim 1, characterized in that: The lugs on both sides of the U-shaped tray (1) are fitted with the downcomer channel (10) to realize the reserved structure of the downcomer channel (10).

5. The high-efficiency orifice plate distillation column according to claim 1, characterized in that: The upper outer side of the blister pack (5) is provided with a ring of air holes (6), and the lower end of the blister pack (5) is a smooth plane to achieve a sealed fit between the blister pack (5) and the U-shaped tower plate (1).

6. The high-efficiency orifice plate distillation column according to claim 1, characterized in that: When the steam pressure increases, and the rising steam pressure exceeds the limit of the connecting spring (2) and the self-weight limit of the float valve, the combination of the venting horn seat (3) and the bubble cap (5) will be lifted, causing the lower end of the bubble cap (5) to separate from the bottom plate of the U-shaped tower plate (1). The lower end of the bubble cap (5) forms an outlet to increase the steam exhaust hole, thereby relieving the rising steam pressure. At the same time, the flow restrictor (8) is also lifted, increasing the distance (A) between the flow restrictor (8) and the bottom plate of the U-shaped tower plate (1), thereby increasing the liquid flow rate in contact with the bubble cap (5) to solve the problem of rising evaporation temperature caused by rising steam pressure. After the steam pressure stabilizes, the combination of the venting horn seat (3) and the bubble cap (5) will be reset with the cooperation of the connecting spring (2). The float valve consists of a connecting spring (2), a venting horn seat (3), a connecting bracket (4), a bubble cover (5), and an air vent groove (6).

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