Efficient rectification device

Abstract

The utility model relates to the technical field of rectification, in particular to an efficient rectification device which comprises a rectification tank, a reboiler and a condenser arranged at the top of the rectification tank, a feeding pipe is communicated with the middle of the side wall of the rectification tank, a feeding valve used for controlling feeding of the feeding pipe is arranged on the feeding pipe, a plurality of filter discs are evenly arranged in the rectification tank, and the reboiler is communicated with the condenser. A material scraping mechanism for scraping reaction materials on the inner wall of the rectification tank and preventing the materials from being adhered to the inner wall of the rectification tank during rectification is arranged in the rectification tank. When a gas phase and a liquid phase reversely flow in the rectification tank, the gas phase and the liquid phase are contacted on the filter discs for mass transfer due to the arrangement of the plurality of filter discs, so that the gas phase and the liquid phase are fully diffused on the filter discs, the contact area of countercurrent contact of the gas phase and the liquid phase is increased, the gas phase and the liquid phase are fully subjected to interphase heat and mass transfer, and the gas phase and the liquid phase are fully separated from each other. The volatile components in the liquid phase enter the gas phase, and the non-volatile components in the gas phase are transferred into the liquid phase, so that the rectification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation, in particular to a high-efficiency distillation device. Background Art

[0002] Distillation is a separation process that utilizes the different volatilities of components in a mixture to separate each component. Commonly used equipment include plate distillation towers and packed distillation towers. Distillation is usually carried out in a distillation tower, and the gas and liquid phases are in countercurrent contact to carry out interphase heat and mass transfer. The volatile components in the liquid phase enter the gas phase, and the less volatile components in the gas phase are transferred to the liquid phase. Therefore, almost pure volatile components can be obtained at the top of the tower, and almost pure less volatile components can be obtained at the bottom of the tower. The feed liquid is added from the middle of the tower. The tower section above the feed inlet further concentrates the volatile components in the rising vapor, which is called the distillation section; the tower section below the feed inlet extracts the volatile components from the descending liquid, which is called the stripping section;

[0003] The prior art refers to a high-efficiency distillation device disclosed in the announcement number CN219251698U. The distillation tank and the water pipe are arranged. The water pipe discharges water into the temperature control chamber in the distillation tank, so that the temperature in the distillation tank is controlled, and the smooth processing of the material in the distillation tank is guaranteed, and the temperature difference intervention is reduced; through the arranged driving box and the stirring frame, the output end of the motor rotates the gear 1, and then the gear 2 and the stirring column rotate, and while the transverse rod on the stirring column mixes the material, the stirring frame scrapes the distillate on the inner wall of the distillation tank, which is convenient for the discharge of the material;

[0004] However, in the prior art, the contact time between the gas and liquid phases in the tower is relatively fast when they flow in reverse, and the efficiency of interphase heat and mass transfer is relatively low. In addition, the prior art uses a stirring rack to drive the transverse rod to rotate to scrape the distillate on the inner wall of the distillation tank, but can only scrape the distillate at the bottom of the distillation tank, and has a relatively low scope of application. For this reason, we designed a high-efficiency distillation device. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the contact time of gas and liquid phases in the tower is fast when they flow in reverse, the efficiency of interphase heat and mass transfer is low, and the distillate at the bottom of the distillation tank can only be scraped off, and the application scope is relatively low, and a high-efficiency distillation device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-efficiency distillation device comprises a distillation tank, a reboiler and a condenser arranged on the top of the distillation tank, wherein a feed pipe is connected to the middle of the side wall of the distillation tank, and a feed valve for controlling the feed of the feed pipe is arranged on the feed pipe, a plurality of filter discs are evenly arranged in the distillation tank, and a scraping mechanism is arranged in the distillation tank for scraping off the reaction materials on the inner wall of the distillation tank to prevent the materials from adhering to the inner wall of the distillation tank during the distillation operation.

[0008] Preferably, the bottom of the distillation tank is connected to the reboiler through a liquid infusion pipe, and the reboiler is connected to the distillation tank through an air inlet pipe, and the air inlet pipe is located below the feed pipe.

[0009] Preferably, the distillation tank is connected to the condenser through a connecting air pipe, and one end of the condenser away from the connecting air pipe is connected to the distillation tank through a liquid return pipe, and the liquid return pipe is located below the connecting air pipe.

[0010] Preferably, the scraping mechanism comprises:

[0011] A driving motor, a rotating shaft, a pair of first connecting rods and a plurality of first scrapers, wherein the driving motor is fixedly mounted on the top of the distillation tank through a bracket, the rotating shaft is coaxially arranged inside the distillation tank, the output end of the driving motor is coaxially fixedly connected to the rotating shaft, a pair of the first connecting rods are arranged on the rotating shaft, a plurality of the first scrapers are respectively fixedly connected to the pair of first connecting rods, and the plurality of the first scrapers are all in contact with the inner wall of the distillation tank;

[0012] Multiple second connecting rods and multiple pairs of second scrapers, the multiple second connecting rods are respectively arranged in the gaps between the multiple filter plates, and the multiple second connecting rods are arranged between a pair of first connecting rods, the multiple pairs of second scrapers are respectively fixedly connected to the multiple second connecting rods, and the multiple pairs of second scrapers are in contact with the inner wall of the distillation tank.

[0013] Preferably, a plurality of the filter discs are each provided with a circular hole, the rotating shaft is inserted into the circular hole, and the side wall of the rotating shaft does not contact the inner wall of the circular hole.

[0014] Preferably, a plurality of supporting legs for supporting the distillation tank are provided at the bottom of the distillation tank.

[0015] The beneficial effects of the utility model are:

[0016] 1. In the utility model, when the gas and liquid phases flow countercurrently in the distillation tank, the arrangement of multiple filter discs allows the gas and liquid phases to contact on the filter discs for mass transfer, so that the gas phase and liquid phase are fully diffused on the filter discs, increasing the contact area of ​​the countercurrent contact between the gas and liquid phases, allowing the gas and liquid phases to fully carry out interphase heat and mass transfer, allowing the volatile components in the liquid phase to enter the gas phase, and the non-volatile components in the gas phase to transfer to the liquid phase, thereby improving the distillation efficiency.

[0017] 2. The utility model drives the rotating shaft to rotate through the output end of the driving motor, so that the multiple scraper plates on the rotating shaft scrape the reaction materials on the inner wall of the distillation tank, preventing the materials from adhering to the inner wall of the distillation tank during the distillation work, reducing the staff's later cleaning work and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a high-efficiency distillation device proposed by the utility model;

[0019] Figure 2 This is a front view of a high-efficiency distillation device proposed by the utility model;

[0020] Figure 3 A schematic diagram of the internal structure of a distillation tank of a high-efficiency distillation device proposed by the utility model;

[0021] Figure 4 The utility model discloses a schematic diagram of a scraping mechanism of a high-efficiency distillation device.

[0022] In the figure: 1. distillation tank; 2. feed pipe; 3. feed valve; 4. liquid infusion pipe; 5. reboiler; 6. air inlet pipe; 7. connecting air pipe; 8. condenser; 9. liquid return pipe; 10. filter plate; 11. drive motor; 12. rotating shaft; 13. first connecting rod; 14. first scraper; 15. second connecting rod; 16. second scraper; 17. supporting tripod. DETAILED DESCRIPTION

[0023] Reference Figure 1-Figure 4 , a high-efficiency distillation device, comprising a distillation tank 1, a reboiler 5 and a condenser 8 arranged on the top of the distillation tank 1, a plurality of support legs 17 for supporting the distillation tank 1 are arranged at the bottom of the distillation tank 1, a feed pipe 2 is connected to the middle of the side wall of the distillation tank 1, a feed valve 3 for controlling the feed of the feed pipe 2 is arranged on the feed pipe 2, a plurality of filter discs 10 are evenly arranged in the distillation tank 1, and a scraping mechanism is arranged in the distillation tank 1, and the scraping mechanism is used to scrape the reaction material on the inner wall of the distillation tank 1 to prevent the material from adhering to the inner wall of the distillation tank 1 during the distillation work;

[0024] The scraping mechanism includes a driving motor 11, a rotating shaft 12, a pair of first connecting rods 13 and a plurality of first scrapers 14. The driving motor 11 is fixedly installed on the top of the distillation tank 1 through a bracket. The rotating shaft 12 is coaxially arranged inside the distillation tank 1. The output end of the driving motor 11 is coaxially fixedly connected to the rotating shaft 12. A pair of first connecting rods 13 are arranged on the rotating shaft 12. A plurality of first scrapers 14 are respectively fixedly connected to the pair of first connecting rods 13. The plurality of first scrapers 14 are all in contact with the inner wall of the distillation tank 1. The rotating shaft 12 is driven to rotate by the output end of the driving motor 11, so that the pair of first connecting rods 13 on the rotating shaft 12 drive the plurality of first scrapers 14 to scrape materials on the top and bottom inner walls of the distillation tank 1, thereby preventing materials from adhering to the inner wall of the distillation tank 1 and reducing the later cleaning work of the staff.

[0025] The scraping mechanism also includes a plurality of second connecting rods 15 and a plurality of pairs of second scrapers 16. The plurality of second connecting rods 15 are respectively arranged in the gaps between the plurality of filter discs 10, and the plurality of second connecting rods 15 are arranged between a pair of first connecting rods 13. The plurality of pairs of second scrapers 16 are respectively fixedly connected to the plurality of second connecting rods 15. The plurality of pairs of second scrapers 16 are all in contact with the inner wall of the distillation tank 1. At the same time, the plurality of second connecting rods 15 and the plurality of pairs of second scrapers 16 are arranged in the gaps between the plurality of filter discs 10. When the rotating shaft 12 rotates, the plurality of second connecting rods 15 drive the plurality of pairs of second scrapers 16 to scrape and clean the places which are inconvenient for the first scraper 14 to clean, thereby saving resources.

[0026] Reference Figure 1 and Figure 3 The bottom of the distillation tank 1 is connected with the reboiler 5 through the liquid infusion pipe 4, the reboiler 5 is connected with the distillation tank 1 through the air inlet pipe 6, the air inlet pipe 6 is located below the feed pipe 2, the distillation tank 1 is connected with the condenser 8 through the connecting air pipe 7, the end of the condenser 8 away from the connecting air pipe 7 is connected with the distillation tank 1 through the liquid return pipe 9, the liquid return pipe 9 is located below the connecting air pipe 7, the material in the distillation tank 1 is heated by the reboiler 5 to generate steam, the gas phase flows from bottom to top in the distillation tank 1, the condenser 8 on the top of the distillation tank 1 condenses the steam into a liquid phase, the liquid phase flows from top to bottom by gravity, and the gas and liquid phases flow in the distillation tank 1 in reverse.

[0027] Reference Figure 3 A plurality of filter discs 10 are evenly arranged in the distillation tank 1, and a circular hole is opened on each of the plurality of filter discs 10. A rotating shaft 12 is inserted in the circular hole, and the side wall of the rotating shaft 12 does not contact the inner wall of the circular hole. When the gas and liquid phases flow countercurrently in the distillation tank 1, they contact on the filter disc 10 for mass transfer, thereby increasing the contact area of ​​the countercurrent contact between the gas and liquid phases, allowing the gas and liquid phases to fully carry out interphase heat and mass transfer, allowing the volatile components in the liquid phase to enter the gas phase, and the non-volatile components in the gas phase to transfer to the liquid phase, thereby improving the distillation efficiency.

[0028] The working principle of the utility model is as follows:

[0029] By evenly arranging a plurality of filter discs 10 in the distillation tank 1, when the reboiler 5 heats the material in the distillation tank 1 to generate steam, the gas phase flows from bottom to top in the distillation tank 1, and the condenser 8 at the top of the distillation tank 1 condenses the steam into a liquid phase, and the liquid phase flows from top to bottom by gravity. The gas and liquid phases flow in opposite directions in the distillation tank 1 and contact on the filter disc 10 for mass transfer, thereby increasing the contact area of ​​the countercurrent contact between the gas and liquid phases, allowing the gas and liquid phases to fully carry out interphase heat and mass transfer, allowing the volatile components in the liquid phase to enter the gas phase, and the non-volatile components in the gas phase to transfer to the liquid phase, thereby improving the distillation efficiency, and driving the rotating shaft 12 to rotate through the output end of the driving motor 11, so that the plurality of scraping plates on the rotating shaft 12 scrape the reaction materials on the inner wall of the distillation tank 1.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency distillation device, comprising a distillation tank (1), a reboiler (5) and a condenser (8) arranged on the top of the distillation tank (1), characterized in that: A feed pipe (2) is connected to the middle of the side wall of the distillation tank (1), and a feed valve (3) for controlling the feed of the feed pipe (2) is provided on the feed pipe (2). A plurality of filter discs (10) are evenly arranged in the distillation tank (1), and a scraping mechanism is provided in the distillation tank (1) for scraping off the reaction material on the inner wall of the distillation tank (1) to prevent the material from adhering to the inner wall of the distillation tank (1) during the distillation operation.

2. A high-efficiency distillation device according to claim 1, characterized in that: The bottom of the rectification tank (1) is connected to the reboiler (5) via a liquid infusion pipe (4), and the reboiler (5) is connected to the inside of the rectification tank (1) via an air inlet pipe (6), and the air inlet pipe (6) is located below the feed pipe (2).

3. A high-efficiency distillation device according to claim 1, characterized in that: The distillation tank (1) is connected to the condenser (8) via a connecting air pipe (7); one end of the condenser (8) away from the connecting air pipe (7) is connected to the inside of the distillation tank (1) via a liquid return pipe (9); and the liquid return pipe (9) is located below the connecting air pipe (7).

4. A high-efficiency distillation device according to claim 1, characterized in that: The scraping mechanism comprises: A drive motor (11), a rotating shaft (12), a pair of first connecting rods (13) and a plurality of first scrapers (14), wherein the drive motor (11) is fixedly mounted on the top of the distillation tank (1) via a bracket, the rotating shaft (12) is coaxially arranged inside the distillation tank (1), an output end of the drive motor (11) is coaxially fixedly connected to the rotating shaft (12), the pair of first connecting rods (13) are arranged on the rotating shaft (12), the plurality of first scrapers (14) are respectively fixedly connected to the pair of first connecting rods (13), and the plurality of first scrapers (14) are all in contact with the inner wall of the distillation tank (1); A plurality of second connecting rods (15) and a plurality of pairs of second scrapers (16), wherein the plurality of second connecting rods (15) are respectively arranged in gaps between the plurality of filter discs (10), and the plurality of second connecting rods (15) are arranged between a pair of first connecting rods (13), the plurality of pairs of second scrapers (16) are respectively fixedly connected to the plurality of second connecting rods (15), and the plurality of pairs of second scrapers (16) are all in contact with the inner wall of the distillation tank (1).

5. A high-efficiency distillation device according to claim 4, characterized in that: A circular hole is formed on each of the plurality of filter discs (10), the rotating shaft (12) is inserted into the circular hole, and the side wall of the rotating shaft (12) does not contact the inner wall of the circular hole.

6. A high-efficiency distillation device according to claim 1, characterized in that: A plurality of supporting legs (17) for supporting the distillation tank (1) are provided at the bottom of the distillation tank (1).

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