Continuous rectification device for fine chemical products

Abstract

The utility model discloses a continuous rectification device for fine chemical products, and relates to the field of fine chemical engineering. A continuous rectification device for fine chemical products comprises a tower body and a tower cover detachably connected to the tower body, and further comprises a tower tray connected to the interior of the tower body, the tower body is fixedly communicated with an air inlet pipe and a liquid inlet pipe, the liquid inlet pipe is located above the tower tray, the air inlet pipe is located below the tower tray, and the liquid inlet pipe is located below the tower tray. A gas outlet pipe communicated with the tower body is arranged on the tower cover; the sleeve is fixedly connected to the tower body, and a piston disc is connected into the sleeve in a sliding mode; according to the utility model, the tower tray is pushed out of the tower body, so that the tower tray can be conveniently cleaned and maintained by a worker, the tower tray can be conveniently detached and replaced when being damaged, and the tower tray is detachably connected with the push rod through the connecting cap, so that the tower tray is more conveniently cleaned and maintained by the worker, and the service life of the tower tray is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of fine chemical technology, specifically, it relates to a continuous distillation device for fine chemical products. Background Technology

[0002] In the fine chemical production process, distillation is a commonly used separation technique to separate different components in a mixture in order to obtain a high-purity product.

[0003] A distillation column achieves separation by utilizing the different volatility of the components in a mixture, i.e., the different vapor pressures of the components at the same temperature, so that the lighter components in the liquid phase are transferred to the gas phase, while the heavier components in the gas phase are transferred to the liquid phase.

[0004] The tray is the core component of a distillation column. The distillation efficiency and separation effect of the mixture depend entirely on the tray. However, most existing trays are installed deep inside the column, making it inconvenient for staff to clean and maintain them after the distillation of the material. Therefore, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a continuous distillation device for fine chemical products that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A continuous distillation apparatus for fine chemical products includes a column body and a column cover detachably connected to the column body. It further includes: a column tray connected to the column body, wherein an inlet pipe and a liquid inlet pipe are fixedly connected to the column body, the liquid inlet pipe being located above the column tray and the inlet pipe being located below the column tray; an outlet pipe connected to the column body is provided on the column cover; a sleeve fixedly connected to the column body, wherein a piston disc is slidably connected inside the sleeve, a push rod is fixedly connected to the piston disc, one end of the push rod passing through the column body and detachably connected to the column tray; a spring is provided inside the sleeve, one end of the spring being fixedly connected to the piston disc and the other end being fixedly connected to the inner wall of the sleeve; and a pressing rod fixedly connected to the column cover and abutting against the column tray.

[0008] To enhance the sealing at the connection between the tray and the tower body, preferably, a sealing plug is fixedly installed on the tray, and a sealing gasket is provided on the sealing plug, with the sealing gasket fitting against the inner wall of the tower body.

[0009] To further enhance the sealing at the connection between the tray and the tower body, an air bladder is arranged around the inner wall of the tower body, and a sealing groove matching the air bladder is opened on the sealing plug. A gas supply pipe one and a gas supply pipe two are fixedly connected to the sleeve, and the sleeve is connected to the air bladder through the gas supply pipe two.

[0010] To further control the opening and closing of the pressure relief pipe and the second gas transmission pipe, the tower body is equipped with a pressure relief pipe connected to the air bladder, and both the pressure relief pipe and the second gas transmission pipe are equipped with valve switches.

[0011] To facilitate the installation or removal of the tower tray, preferably, a connecting cap is fixedly connected to the tower tray, and one end of the push rod that passes through the tower body is threadedly connected to the connecting cap.

[0012] To facilitate the removal of materials stored inside the tower, preferably, a discharge pipe is fixedly connected to the tower body, and a solenoid valve is installed on the discharge pipe.

[0013] To facilitate the installation or disassembly of the tower cover, preferably, it also includes multiple fixing bolts, through which the tower cover is detachably connected to the tower body.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] This invention, by pushing the tray out of the tower body, not only facilitates cleaning and maintenance of the tray by staff, but also makes it easy to disassemble and replace the tray when it is damaged. Since the tray and the push rod are connected and disassembled through a connecting cap, it is even more convenient for staff to clean and maintain the tray, thereby extending the service life of the tray. Attached Figure Description

[0016] Figure 1 This is a sectional view of the tower body and tower cover of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0019] Figure 4 This is the utility model Figure 1 Enlarged view of section A;

[0020] Figure 5 This is the utility model Figure 1 Enlarged view of section B.

[0021] In the diagram: 1. Tower body; 101. Tower cover; 102. Fixing bolt; 103. Tower tray; 104. Liquid inlet pipe; 105. Gas inlet pipe; 106. Discharge pipe; 2. Gas outlet pipe; 3. Sealing plug; 301. Sealing gasket; 4. Sleeve; 401. Piston disc; 402. Push rod; 403. Spring; 404. Pressing rod; 405. Connecting cap; 5. Air bladder; 501. Gas delivery pipe one; 502. Gas delivery pipe two; 503. Pressure relief pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 A continuous distillation apparatus for fine chemical products includes a column body 1 and a column cover 101 detachably connected to the column body 1. It also includes: a column tray 103 connected inside the column body 1, wherein an inlet pipe 105 and a liquid inlet pipe 104 are fixedly connected to the column body 1, with the liquid inlet pipe 104 located above the column tray 103 and the inlet pipe 105 located below the column tray 103; an outlet pipe 2 connected to the column body 1 on the column cover 101; a sleeve 4 fixedly connected to the column body 1, wherein a piston disc 401 is slidably connected inside the sleeve 4, and a push rod 402 is fixedly connected to the piston disc 401. One end of the push rod 402, penetrating inside the column body 1, is detachably connected to the column tray 103; a spring 403 is provided inside the sleeve 4, with one end of the spring 403 fixedly connected to the piston disc 401 and the other end fixedly connected to the inner wall of the sleeve 4; and a pressing rod 404 fixedly connected to the column cover 101 and abutting against the column tray 103.

[0025] A connecting cap 405 is fixedly connected to the tray 103, and one end of the push rod 402 that passes through the tower body 1 is threadedly connected to the connecting cap 405.

[0026] A discharge pipe 106 is fixedly connected to the tower body 1, and a solenoid valve is installed on the discharge pipe 106.

[0027] In operation, the material enters the column body 1 through the liquid inlet pipe 104 and the gas inlet pipe 105 respectively. The liquid inlet pipe 104 feeds liquid above the tray 103, and the gas inlet pipe 105 feeds gas below the tray 103, allowing for sufficient heat and mass exchange on the tray 103 to achieve distillation. At this time, the low-boiling-point components gradually vaporize and rise, while the high-boiling-point components flow downward under the action of gravity, thereby achieving the separation of components with different boiling points. After distillation, the gas phase component at the top of the column is discharged through the gas outlet pipe 2 on the column cover 101. The gas is mainly low-boiling-point fine chemical products, while the high-boiling-point components or other unvaporized liquids at the bottom of the column can be discharged through the discharge pipe 106. The solenoid valve on the discharge pipe 106 can control the discharge time and flow rate as needed, thereby ensuring the continuous and stable operation of the entire distillation process.

[0028] After the distillation of the material is completed, the tower cover 101 installed on the tower body 1 is removed first. At this time, the compressed spring 403 generates thrust, pushing the piston disc 401 to slide upward in the sleeve 4. When the piston disc 401 slides upward, it can push the tower tray 103 to move upward synchronously through the push rod 402, so that the tower tray 103 is pushed out of the tower body 1. This not only makes it convenient for the staff to clean and maintain the tower tray 103, but also makes it easy to disassemble and replace the tower tray 103 when it is damaged. Since the tower tray 103 and the push rod 402 are connected by the connecting cap 405, it is more convenient for the staff to clean and maintain the tower tray 103, thereby extending the service life of the tower tray 103.

[0029] After cleaning and maintaining tray 103, first install the cover 101 onto the column body 1 to close it. During the closing process, the cover 101 pushes the tray 103 downward via the pressing rod 404, pushing the tray 103 into the column body 1. Simultaneously, as the tray 103 moves downward, the push rod 402 pushes the piston disc 401 to slide downward in the sleeve 4, compressing the spring 403. After the cover 101 is in place, the pressing rod 404 applies a certain pressure to the tray 103, which, together with the elastic force of the spring 403, stabilizes the position of the tray 103 within the column body 1. This ensures that the tray 103 will not shift due to the impact of internal airflow or liquid flow during the distillation process, thereby maintaining good distillation results.

[0030] Example 2:

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4A continuous distillation apparatus for fine chemical products is basically the same as in Example 1, but with the addition that a sealing plug 3 is fixedly installed on the tray 103, and a sealing gasket 301 is provided on the sealing plug 3. The sealing gasket 301 is in close contact with the inner wall of the column body 1. By tightly fitting the sealing plug 3 and the sealing gasket 301 with the inner wall of the column body 1, the sealing performance at the connection between the tray 103 and the column body 1 is increased, preventing steam from leaking through the gap at the connection between the tray 103 and the inner wall of the column body 1, which would prevent the steam from failing to fully contact the liquid through the tray 103 and reduce the distillation effect.

[0032] The inner wall of the tower body 1 is surrounded by an airbag 5. The sealing plug 3 has a sealing groove that matches the airbag 5. The sleeve 4 is fixedly connected to a gas supply pipe 1 501 and a gas supply pipe 2 502. The sleeve 4 is connected to the airbag 5 through the gas supply pipe 2 502.

[0033] The tower body 1 is equipped with a pressure relief pipe 503 that is connected to the air bag 5. Both the pressure relief pipe 503 and the gas transmission pipe 502 are equipped with valve switches.

[0034] When the piston disc 401 slides upward within the sleeve 4, external gas can be drawn into the sleeve 4 through the gas supply pipe 501. Then, when the piston disc 401 slides downward within the sleeve 4, the gas stored in the sleeve 4 will not interfere with the downward movement of the piston disc 401 because the gas can be compressed. After the tower cover 101 is installed in place, the sealing groove on the tower tray 103 corresponds to the gas bag 5. At this time, the valve switch on the gas supply pipe 502 is opened, and the gas in the sleeve 4 can be filled into the gas bag 5 through the gas supply pipe 502, thereby causing the gas bag 5 to expand and fit tightly with the sealing groove. One-way valves are provided on both the gas supply pipe 501 and the gas supply pipe 502, which further increases the sealing performance at the connection between the tower tray 103 and the tower body 1, thereby ensuring that the vapor can fully contact the liquid through the tower tray 103 when it rises, thus improving the distillation effect.

[0035] When adjustments or maintenance are required, the gas inside the airbag 5 can be released through the valve switch on the pressure relief pipe 503, thus facilitating operation by staff.

[0036] Example 3:

[0037] Reference Figure 1 , Figure 2 A continuous distillation apparatus for fine chemical products is basically the same as that in Example 1, but further includes multiple fixing bolts 102. The tower cover 101 is detachably connected to the tower body 1 by the multiple fixing bolts 102. During use, dirt, sediment or other impurities may accumulate inside the tower body 1. Therefore, by making the tower cover 101 detachable, it is possible to thoroughly clean and maintain the inside of the tower body 1, thereby maintaining the cleanliness inside the tower and improving the quality of the product during distillation.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A continuous distillation apparatus for fine chemical products, comprising a column body (1) and a column cover (101) detachably connected to the column body (1), characterized in that, Also includes: The tray (103) connected inside the tower body (1) The tower body (1) is fixedly connected to an air inlet pipe (105) and a liquid inlet pipe (104). The liquid inlet pipe (104) is located above the tray (103), and the air inlet pipe (105) is located below the tray (103). The tower cover (101) is provided with an air outlet pipe (2) that is connected to the tower body (1). Sleeve (4) is fixedly connected to the tower body (1). The sleeve (4) is slidably connected to a piston disc (401), and a push rod (402) is fixedly connected to the piston disc (401). One end of the push rod (402) passes through the tower body (1) and is detachably connected to the tower disc (103). A spring (403) is provided inside the sleeve (4). One end of the spring (403) is fixedly connected to the piston disc (401), and the other end is fixedly connected to the inner wall of the sleeve (4). The pressing rod (404) is fixedly connected to the tower cover (101) and abuts against the tower tray (103).

2. The continuous distillation apparatus for fine chemical products according to claim 1, characterized in that, A sealing plug (3) is fixedly installed on the tray (103), and a sealing gasket (301) is provided on the sealing plug (3). The sealing gasket (301) is in contact with the inner wall of the tower body (1).

3. The continuous distillation apparatus for fine chemical products according to claim 2, characterized in that, The inner wall of the tower body (1) is surrounded by an air bladder (5). The sealing plug (3) has a sealing groove that matches the air bladder (5). The sleeve (4) is fixedly connected to a first gas supply pipe (501) and a second gas supply pipe (502). The sleeve (4) is connected to the air bladder (5) through the second gas supply pipe (502).

4. The continuous distillation apparatus for fine chemical products according to claim 3, characterized in that, The tower body (1) is provided with a pressure relief pipe (503) connected to the air bag (5), and valve switches are provided on the pressure relief pipe (503) and the second gas transmission pipe (502).

5. The continuous distillation apparatus for fine chemical products according to claim 1, characterized in that, A connecting cap (405) is fixedly connected to the tray (103), and one end of the push rod (402) that passes through the tower body (1) is threadedly connected to the connecting cap (405).

6. The continuous distillation apparatus for fine chemical products according to claim 1, characterized in that, A discharge pipe (106) is fixedly connected to the tower body (1), and a solenoid valve is installed on the discharge pipe (106).

7. The continuous distillation apparatus for fine chemical products according to claim 1, characterized in that, It also includes multiple fixing bolts (102), and the tower cover (101) is detachably connected to the tower body (1) by the multiple fixing bolts (102).

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