Separation, purification and distillation equipment

By introducing a steam distribution chamber and a spiral cooling circulation pipe into the distillation equipment, the problem of low condensation efficiency in traditional distillation equipment is solved, achieving efficient condensation and purification effects and ensuring the continuity and safety of production.

CN223668667UActive Publication Date: 2025-12-16JIANGSU HUAXING HEAVY IND CO LTD
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Patent Information

Application Number
CN202423269102.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-12-16
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

Traditional distillation equipment has inefficient cooling methods during the condensation stage, resulting in low overall distillation efficiency.

Method used

The system employs a distillation kettle and a condenser tower structure. The condenser tower contains a steam distribution chamber, a heat exchange chamber, and a liquid collection chamber. The steam distribution chamber has vertically arranged steam distribution pipes, while the heat exchange chamber has spirally arranged cooling circulation pipes to ensure uniform steam distribution and efficient condensation.

Benefits of technology

It improves condensation efficiency and purification efficiency, ensures production continuity and stability, reduces the risk of steam leakage, and improves overall production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to separation and purification distillation equipment and relates to the technical field of separation and purification, in order to solve the problem that traditional distillation equipment is low in distillation efficiency, the separation and purification distillation equipment comprises a distillation still and a condensing tower, the distillation still is communicated with the condensing tower, and a steam distribution chamber, a heat exchange chamber and a liquid collection chamber are sequentially formed in the condensing tower from top to bottom; the steam distribution chamber, the heat exchange chamber and the liquid collection chamber are sequentially communicated, a plurality of steam distribution pipes are arranged in the steam distribution chamber and are all vertically arranged in the steam distribution chamber, a cooling circulation pipe is arranged in the heat exchange chamber and is spirally arranged in the heat exchange chamber, and the liquid collection chamber is communicated with the cooling circulation pipe. A liquid outlet is formed in the condensing tower and is communicated into the liquid collecting chamber. The device has the effects of improving the condensation effect and the purification efficiency and improving the purity and the quality of purified liquid.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of separation and purification, in particular to a separation and purification distillation device. BACKGROUND

[0002] The distillation device is a separation and purification device widely used in the fields of chemical industry, medicine, food and light industry, etc. It utilizes the principle of the difference in boiling points of different substances, vaporizes the components in the mixture by heating, and then collects the vapor by condensation to achieve the purpose of separation and purification of substances. In this process, the distillation device can not only effectively separate each component in the mixture according to the boiling point, but also can realize accurate purification of the target product by controlling the heating temperature, condensation pressure and operating conditions.

[0003] In the related art, the traditional distillation device often adopts a single cooling method, such as natural cooling or simple water cooling, during the condensation stage. These cooling methods are limited by the heat transfer performance of the cooling medium and the limitation of the cooling area, resulting in low heat transfer efficiency during the condensation process, which in turn affects the overall distillation efficiency, and thus needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem of low distillation efficiency of the traditional distillation device, the present application provides a separation and purification distillation device.

[0005] The separation and purification distillation device provided by the present application adopts the following technical solution:

[0006] A separation and purification distillation device, comprising a distillation kettle and a condensation tower, wherein the distillation kettle is in communication with the condensation tower, the condensation tower is internally formed with a vapor distribution chamber, a heat exchange chamber and a liquid collection chamber from top to bottom in sequence, the vapor distribution chamber, the heat exchange chamber and the liquid collection chamber are in communication in sequence, a plurality of vapor distribution pipes are arranged in the vapor distribution chamber, the plurality of vapor distribution pipes are vertically arranged in the vapor distribution chamber, a cooling circulation pipe is arranged in the heat exchange chamber, the cooling circulation pipe is spirally arranged in the heat exchange chamber, a liquid outlet is arranged on the condensation tower, and the liquid outlet is communicated into the liquid collection chamber.

[0007] In the related art, the traditional distillation device often adopts a single cooling method, such as natural cooling or simple water cooling, during the condensation stage. These cooling methods are limited by the heat transfer performance of the cooling medium and the limitation of the cooling area, resulting in low heat transfer efficiency during the condensation process, which in turn affects the overall distillation efficiency; by adopting the above technical solution, the distillation kettle and the condensation tower are in communication, the vapor distribution chamber, the heat exchange chamber and the liquid collection chamber are formed in the condensation tower in sequence;

[0008] When the distillation treatment is carried out, first, the liquid or mixture to be purified is placed in the distillation kettle, the heating device in the distillation kettle is started, the distillation kettle is heated, the liquid starts to evaporate and generates steam, the steam enters the condensing tower through the connecting pipeline between the distillation kettle and the condensing tower, after the steam enters the condensing tower, it first enters the steam distribution chamber, the steam is uniformly distributed through a plurality of vertically arranged steam distribution pipes in the steam distribution chamber, the steam can uniformly flow to the next stage, the steam uniformly distributed through the steam distribution chamber enters the heat exchange chamber, in the heat exchange chamber, the steam exchanges heat with the cooling medium in the cooling circulating pipe, with the heat exchange between the steam and the cooling medium, the steam gradually condenses into liquid, the condensed liquid is further collected and stored in the liquid collection chamber, and finally through the liquid outlet, the purified liquid can be discharged or further treated.

[0009] Through the setting of the distillation kettle and the condensing tower, the steam distribution chamber inside the equipment is equipped with vertically arranged steam distribution pipes, which ensures that the steam can uniformly and stably flow to the heat exchange chamber, avoids local accumulation of steam, improves the condensation effect and purification efficiency, at the same time, the cooling circulating pipe is arranged in a spiral shape in the heat exchange chamber, which greatly increases the contact area and contact time of the steam and the cooling medium, makes the heat transfer more efficient, speeds up the condensation process of the steam, further improves the purity and quality of the purified liquid, and the equipment is designed reasonably, supports continuous distillation operation, does not need to be frequently interrupted, ensures the continuity and stability of production, and improves the overall production efficiency.

[0010] Optionally, the distillation kettle comprises a kettle body and a kettle cover, the kettle body is hollow inside, the kettle cover is connected to the opening of the kettle body, and a fastening mechanism for connection is arranged between the kettle body and the kettle cover.

[0011] By adopting the above technical scheme, the distillation kettle is composed of a kettle body and a kettle cover, and a fastening mechanism is installed between the kettle body and the kettle cover; through the setting of the kettle body and the kettle cover, the compact and stable whole is formed by the structural design of the kettle body and the kettle cover, the volume of the equipment is reduced, and the durability is improved.

[0012] Optionally, the number of fastening mechanisms is multiple, the multiple fastening mechanisms are arranged along the circumferential direction of the kettle body in sequence, any fastening mechanism comprises a connecting piece, a fastening screw, a locking nut and a matching piece, the connecting piece is connected to the kettle body, one end of the fastening screw is hingedly arranged on the connecting piece, the matching piece is connected to the kettle cover, the fastening screw passes through the matching piece, the locking nut is threadedly connected to the fastening screw, and the locking nut abuts against the top of the matching piece.

[0013] By adopting the technical scheme, the fastening mechanism is composed of the connecting piece, the fastening screw, the locking nut and the cooperating piece; when the kettle body and the kettle cover are installed, the kettle cover is placed on the kettle body, the connecting piece is preliminarily aligned with the cooperating piece, the fastening screw is rotated one by one, the fastening screw passes through the corresponding cooperating piece, the locking nut is threadedly connected on the fastening screw one by one, each locking nut is tightened gradually and uniformly by using a wrench or a special tool until a predetermined fastening torque is reached, and the installation of the kettle body and the kettle cover is completed; through the arrangement of the fastening mechanism, the uniformity and stability of the connection between the kettle body and the kettle cover are ensured, and the stability of the whole equipment is improved, the leakage of steam or harmful substances is effectively prevented, and the smooth progress of the distillation process and the safety of the working environment are ensured.

[0014] Optionally, the top of the cooperating piece is provided with a mounting washer for cooperating with the locking nut, and the mounting washer is sleeved on the fastening screw.

[0015] By adopting the technical scheme, the mounting washer is sleeved on the fastening screw, and the mounting washer is located at the top of the cooperating piece; through the arrangement of the mounting washer, the pressure of the locking nut on the cooperating piece can be dispersed, the pressure distribution in the fastening process is more uniform, the deformation or damage of the cooperating piece caused by excessive local pressure is reduced, and the durability of the fastening mechanism is improved.

[0016] Optionally, the top of the kettle body is provided with a cooperating step for positioning the kettle cover, and a sealing rubber ring for sealing is arranged between the kettle body and the kettle cover, and the sealing rubber ring is arranged at the cooperating step.

[0017] By adopting the technical scheme, the cooperating step is integrally formed at the top of the kettle body, and the sealing rubber ring is installed on the cooperating step; through the arrangement of the cooperating step and the sealing rubber ring, the cooperating step provides an accurate positioning reference for the kettle cover, ensures the alignment and accurate connection between the kettle cover and the kettle body, reduces the error in the installation process, improves the stability of the overall structure, and at the same time, the sealing rubber ring can fill the small gap between the two, prevent steam, gas or liquid from leaking during the distillation process, and ensure the smooth progress of the distillation process and the safety of the working environment.

[0018] Optionally, a distillation pipe for communication is arranged between the distillation kettle and the condensing tower, the distillation kettle and the condensing tower are respectively provided with a steam outlet port and a steam inlet port for installing the distillation pipe, and the steam inlet port communicates with the steam distribution chamber of the condensing tower.

[0019] By adopting the technical scheme, the steam outlet is installed on the distillation kettle, the steam inlet is installed on the condensation tower, the distillation pipe is arranged between the distillation kettle and the condensation tower, and the distillation pipe is installed on the steam outlet and the steam inlet respectively; through the arrangement of the steam outlet, the steam inlet and the distillation pipe, the distillation pipe serves as a key component for connecting the distillation kettle and the condensation tower, so that the steam can be smoothly transmitted from the steam outlet of the distillation kettle to the steam inlet of the condensation tower, the resistance and loss of the steam in the transmission process are reduced, and the utilization rate of the steam is improved.

[0020] Optionally, the steam distribution chamber is provided with a mounting plate for mounting the steam distribution pipe, and a plurality of mounting holes for mounting the steam distribution pipe are formed through the mounting plate.

[0021] By adopting the technical scheme, the mounting plate is installed inside the steam distribution chamber, a plurality of mounting holes are formed in the mounting plate, and the steam distribution pipe is sequentially mounted in the mounting holes; through the arrangement of the mounting plate and the mounting holes, the mounting holes in the mounting plate can be designed and arranged according to actual needs, so as to ensure that the steam distribution pipe can uniformly and effectively introduce the steam into the steam distribution chamber, which is helpful to realize uniform distribution of the steam in the condensation tower and improve the condensation effect and product quality.

[0022] Optionally, the condensation tower is provided with a cooling water inlet and a cooling water outlet for cooperating with the cooling circulation pipe, and the cooling water inlet and the cooling water outlet are arranged at the heat exchange chamber of the condensation tower.

[0023] By adopting the technical scheme, the cooling water inlet and the cooling water outlet are formed on the condensation tower, and the cooling water inlet and the cooling water outlet are respectively connected with the cooling circulation pipe; through the arrangement of the cooling water inlet and the cooling water outlet, the cooling circulating water can smoothly enter and leave the heat exchange chamber of the condensation tower, so as to ensure that the cooling water can fully exchange heat with the steam, effectively reduce the temperature of the steam, and improve the heat exchange efficiency.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] Through the arrangement of the distillation kettle and the condensation tower, the steam distribution chamber inside the equipment is provided with the vertically arranged steam distribution pipe, so as to ensure that the steam can uniformly and stably flow to the heat exchange chamber, avoid local accumulation of the steam, improve the condensation effect and the purification efficiency, and at the same time, the cooling circulation pipe is arranged in a spiral shape in the heat exchange chamber, which greatly increases the contact area and contact time of the steam and the cooling medium, so that the heat transfer is more efficient, the condensation process of the steam is accelerated, the purity and quality of the purified liquid are further improved, the equipment is rationally designed, the continuous distillation operation is supported, the production continuity and stability are ensured, and the overall production efficiency is improved.

[0026] The setting of the fastening mechanism ensures the uniformity and stability of the connection between the kettle body and the kettle cover, improves the stability of the whole equipment, and effectively prevents the leakage of steam or harmful substances, ensuring the smooth progress of the distillation process and the safety of the working environment.

[0027] Through the cooperation of the step and the sealing rubber ring, the design of the cooperation step provides a precise positioning reference for the kettle cover, ensuring the alignment and accurate connection between the kettle cover and the kettle body, which helps to reduce errors during installation and improve the stability of the overall structure. At the same time, the sealing rubber ring can fill the small gap between the two, preventing steam, gas or liquid from leaking during the distillation process, which is crucial to ensure the smooth progress of the distillation process and the safety of the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of a separation and purification distillation equipment in the embodiment of the present application.

[0029] Figure 2 is a partial enlarged view of the structure of the fastening mechanism in the embodiment of the present application.

[0030] Figure 3 is a partial sectional view of the internal structure of the condensation tower in the embodiment of the present application.

[0031] Reference signs: 1, distillation kettle; 11, kettle body; 12, kettle cover; 2, condensation tower; 21, steam distribution chamber; 22, heat exchange chamber; 23, liquid collection chamber; 3, steam distribution pipe; 4, cooling circulation pipe; 5, liquid outlet; 6, fastening mechanism; 61, connecting piece; 62, fastening screw; 63, locking nut; 64, cooperating piece; 7, mounting gasket; 8, cooperation step; 9, sealing rubber ring; 10, distillation pipe; 13, steam outlet port; 14, steam inlet port; 15, mounting plate; 16, mounting hole; 17, cooling water inlet; 18, cooling water outlet. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the Figures 1-3 The present application will be further described in detail.

[0033] The embodiment of the present application discloses a separation and purification distillation equipment. Referring to Figure 1 , the separation and purification distillation equipment comprises a distillation kettle 1 and a condensation tower 2, the distillation kettle 1 is in a cylindrical structure, an inlet for feeding the liquid or mixture to be purified into the interior is formed on the distillation kettle 1, and a heating device is provided in the interior of the distillation kettle 1 in the embodiment, the distillation kettle 1 is heated, so that the liquid starts to evaporate and generates steam.

[0034] Referring to Figure 1 and Figure 2, the distillation kettle 1 includes a kettle body 11 and a kettle cover 12, the kettle body 11 is hollow inside, the kettle cover 12 is installed at the opening of the top of the kettle body 11, the top of the kettle body 11 is integrally formed with a matching step 8, the kettle cover 12 is installed at the matching step 8 of the top of the kettle body 11, the design of the matching step 8 provides a precise positioning reference for the kettle cover 12, ensures the alignment and accurate connection between the kettle cover 12 and the kettle body 11, helps to reduce errors in the installation process, and improves the stability of the overall structure.

[0035] Referring to Figure 1 and Figure 2 , the sealing rubber ring 9 is arranged on the matching step 8; the sealing rubber ring 9 can fill the small gap between the two, prevent steam, gas or liquid from leaking during the distillation process, and ensure the smooth progress of the distillation process and the safety of the working environment.

[0036] Referring to Figure 1 and Figure 2 , the fastening mechanism 6 is installed between the kettle body 11 and the kettle cover 12, which is used to realize the stability of the connection between the kettle body 11 and the kettle cover 12 in the embodiment, and the fastening mechanism 6 is arranged along the circumferential direction of the kettle body 11.

[0037] Referring to Figure 1 and Figure 2 , any fastening mechanism 6 includes a connecting piece 61, a fastening screw 62, a locking nut 63 and a matching piece 64, the connecting piece 61 and the matching piece 64 are provided with notches in this embodiment, the connecting piece 61 is welded and fixed on the kettle body 11, the matching piece 64 is welded and fixed on the kettle cover 12, the connecting piece 61 corresponds to the matching piece 64, one end of the fastening screw 62 is hingedly installed in the notch of the connecting piece 61, and the other end of the fastening screw 62 penetrates through the notch of the matching piece 64, the locking nut 63 is threadedly connected on the fastening screw 62, and the locking nut 63 abuts against the top of the matching piece 64; which ensures the uniformity and stability of the connection between the kettle body 11 and the kettle cover 12, improves the stability of the whole equipment, effectively prevents the leakage of steam or harmful substances, and ensures the smooth progress of the distillation process and the safety of the working environment.

[0038] Referring to Figure 1 and Figure 2 , the top of the matching piece 64 is also provided with a mounting gasket 7, the mounting gasket 7 is sleeved on the fastening screw 62, and the locking nut 63 abuts against the surface of the mounting gasket 7; the mounting gasket 7 can disperse the pressure of the locking nut 63 on the matching piece 64, so that the pressure distribution in the fastening process is more uniform, which helps to reduce the deformation or damage of the matching piece 64 caused by excessive local pressure, and improves the durability of the fastening mechanism 6.

[0039] Referring toFigure 1 The steam outlet port 13 is formed on the distillation kettle 1 and communicates with the inside of the distillation kettle 1. The steam outlet port 13 is arranged at the top of the distillation kettle 1. The steam inlet port 14 is formed on the condensation tower 2 and communicates with the inside of the condensation tower 2. The distillation pipe 10 is arranged between the distillation kettle 1 and the condensation tower 2. The two ends of the distillation pipe 10 are connected to the steam outlet port 13 and the steam inlet port 14, respectively. The distillation pipe 10 is a key component for connecting the distillation kettle 1 and the condensation tower 2. The steam can be smoothly transmitted from the steam outlet port 13 of the distillation kettle 1 to the steam inlet port 14 of the condensation tower 2. The resistance and loss of the steam during transmission are reduced, and the utilization rate of the steam is improved.

[0040] With reference to Figure 1 and Figure 3 , the steam distribution chamber 21, the heat exchange chamber 22, and the liquid collection chamber 23 are sequentially formed in the condensation tower 2 from top to bottom. In this embodiment, the steam inlet port 14 is arranged in the steam distribution chamber 21. The steam distribution chamber 21, the heat exchange chamber 22, and the liquid collection chamber 23 are sequentially connected. A plurality of steam distribution pipes 3 are arranged in the steam distribution chamber 21.

[0041] With reference to Figure 1 and Figure 3 , the mounting plate 15 is arranged in the steam distribution chamber 21. A plurality of mounting holes 16 are formed in the mounting plate 15. In this embodiment, the mounting holes 16 are used for mounting the steam distribution pipes 3. The number of mounting plates 15 is multiple. The mounting plates 15 are sequentially arranged along the height direction of the steam distribution chamber 21. The mounting holes 16 in the mounting plate 15 can be designed and arranged according to actual needs. The steam distribution pipes 3 can uniformly and effectively introduce steam into the steam distribution chamber 21. This helps to achieve uniform distribution of steam in the condensation tower 2, improve the condensation effect, and improve the product quality.

[0042] With reference to Figure 1 and Figure 3 , the cooling circulation pipe 4 is arranged in the heat exchange chamber 22. The cooling circulation pipe 4 is arranged in the heat exchange chamber 22 in a spiral shape. The cooling water inlet 17 and the cooling water outlet 18 are formed on the condensation tower 2. The cooling water inlet 17 and the cooling water outlet 18 are arranged at the heat exchange chamber 22 of the condensation tower 2. The two ends of the cooling circulation pipe 4 are connected to the cooling water inlet 17 and the cooling water outlet 18, respectively. The cooling circulating water can smoothly enter and leave the heat exchange chamber 22 of the condensation tower 2. This ensures that the cooling water can fully exchange heat with the steam, effectively reduces the temperature of the steam, and improves the heat exchange efficiency.

[0043] With reference to Figure 1Meanwhile, the liquid outlet 5 is formed on the condensing tower 2 and communicates with the liquid collecting chamber 23, and the liquid outlet 5 is designed to allow the condensate generated in the condensing process to flow out of the condensing tower 2 smoothly, ensuring efficient collection of the condensate and avoiding the condensate from remaining and being wasted in the condensing tower 2, facilitating subsequent processing and utilization.

[0044] The implementation principle of the separation and purification distillation equipment is as follows: when distillation is performed, first, the liquid or mixture to be purified is placed in the distillation kettle 1, the heating device in the distillation kettle 1 is started, the distillation kettle 1 is heated, the liquid starts to evaporate and generates steam, the steam enters the condensing tower 2 through the connecting pipeline between the distillation kettle 1 and the condensing tower 2, and after entering the condensing tower 2, the steam first enters the steam distribution chamber 21, the steam is uniformly distributed by the vertically arranged steam distribution pipes 3 in the steam distribution chamber 21, the steam can uniformly flow to the next stage, the steam uniformly distributed by the steam distribution chamber 21 enters the heat exchange chamber 22, and the steam exchanges heat with the cooling medium in the cooling circulating pipe 4 in the heat exchange chamber 22, with the heat exchange between the steam and the cooling medium, the steam gradually condenses into liquid, the condensed liquid enters the liquid collecting chamber 23, and the condensed liquid is further collected and stored in the liquid collecting chamber 23, and finally through the liquid outlet 5, the purified liquid can be discharged or further processed;

[0045] Through the arrangement of the distillation kettle 1 and the condensing tower 2, the steam distribution chamber 21 in the equipment is equipped with the vertically arranged steam distribution pipes 3, which ensures that the steam can uniformly and stably flow to the heat exchange chamber 22, avoids local accumulation of the steam, improves the condensing effect and the purification efficiency, and at the same time, the cooling circulating pipe 4 is arranged in a spiral shape in the heat exchange chamber 22, which greatly increases the contact area and contact time of the steam and the cooling medium, makes the heat transfer more efficient, accelerates the condensation process of the steam, and further improves the purity and quality of the purified liquid, and the equipment is reasonably designed, supports continuous distillation operation, does not need to be frequently interrupted, ensures the continuity and stability of production, and improves the overall production efficiency.

[0046] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A separation and purification distillation apparatus, characterized by: The utility model relates to a distillation kettle and condensing tower, the distillation kettle is communicated with condensing tower, the condensing tower is shaped with steam distribution chamber (21), heat exchange chamber (22) and liquid collection chamber (23) from top to bottom successively in it, steam distribution chamber (21), heat exchange chamber (22) and liquid collection chamber (23) are communicated successively, steam distribution chamber (21) is provided with several steam distribution pipe (3), several steam distribution pipe (3) are vertically arranged in steam distribution chamber (21), heat exchange chamber (22) is provided with cooling circulation pipe (4), cooling circulation pipe (4) is arranged in heat exchange chamber (22) in spiral shape, condensing tower (2) is provided with liquid outlet (5), liquid outlet (5) is communicated to liquid collection chamber (23) in.

2. A separation and purification distillation apparatus according to claim 1, characterized in that: The distillation kettle (1) comprises a kettle body (11) and a kettle cover (12), the kettle body (11) is hollow inside, the kettle cover (12) is connected at the opening of the kettle body (11), and a fastening mechanism (6) for connection is arranged between the kettle body (11) and the kettle cover (12).

3. A separation and purification distillation apparatus according to claim 2, wherein: The fastening mechanism (6) is arranged along the circumferential direction of the kettle body (11) in multiple groups, and any fastening mechanism (6) comprises a connecting piece (61), a fastening screw (62), a locking nut (63) and a matching piece (64), the connecting piece (61) is connected to the kettle body (11), one end of the fastening screw (62) is hingedly connected to the connecting piece (61), the matching piece (64) is connected to the kettle cover (12), the fastening screw (62) passes through the matching piece (64), the locking nut (63) is threadedly connected to the fastening screw (62), and the locking nut (63) abuts against the top of the matching piece (64).

4. A separation and purification distillation apparatus according to claim 3, wherein: The top of the matching piece (64) is provided with a mounting washer (7) for matching the locking nut (63), and the mounting washer (7) is sleeved on the fastening screw (62).

5. A separation and purification distillation apparatus according to claim 2, wherein: The top of the kettle body (11) is provided with a matching step (8) for positioning the kettle cover (12), a sealing rubber ring (9) for sealing is arranged between the kettle body (11) and the kettle cover (12), and the sealing rubber ring (9) is arranged at the matching step (8).

6. A separation and purification distillation apparatus according to claim 1, wherein: A distillation pipe (10) for communication is arranged between the distillation kettle (1) and the condensing tower (2), the distillation kettle (1) and the condensing tower (2) are respectively provided with a steam outlet port (13) and a steam inlet port (14) for mounting the distillation pipe (10), and the steam inlet port (14) is communicated into the steam distribution chamber (21) of the condensing tower (2).

7. A separation and purification distillation apparatus according to claim 6, characterised in that: The steam distribution chamber (21) is provided with a mounting plate (15) for mounting the steam distribution pipe (3), and a plurality of mounting holes (16) for mounting the steam distribution pipe (3) are formed through the mounting plate (15).

8. A separation and purification distillation apparatus according to claim 1, wherein: The condensing tower (2) is provided with a cooling water inlet (17) and a cooling water outlet (18) for matching a cooling circulating pipe (4), and the cooling water inlet (17) and the cooling water outlet (18) are arranged at a heat exchange chamber (22) of the condensing tower (2).