Glass-lined molecular distiller and separation and purification method thereof

Abstract

The invention relates to the technical field of separation and purification equipment, in particular to a glass-lined molecular distiller and a separation and purification method thereof. According to the technical scheme, the evaporator comprises a transmission mechanism assembly, a transmission mechanism fixing support, an evaporation barrel assembly, a cooling system assembly and a material distributor assembly, the transmission mechanism assembly comprises a motor, a speed reducer and a stirrer, the motor is connected with the speed reducer through a flange, the speed reducer is connected with the transmission mechanism fixing support through a flange, and the stirrer is connected with the transmission mechanism fixing support. And the transmission mechanism fixing bracket is connected with the stirrer through a coupler. By using a glass lining material, the problem of metal ion precipitation of stainless steel equipment is thoroughly solved, meanwhile, the fragile defect of glass equipment is avoided, industrial large-scale production can be realized, and during operation, the material distributor and the scraper blade are matched to form a uniform liquid film, the evaporation area is increased, and the evaporation temperature is reduced in a high-vacuum environment; and in cooperation with a tube nest condensation system, the light component recovery rate can reach 95% or above.

Description

Technical Field

[0001] This invention relates to the field of separation and purification equipment technology, and in particular to a glass-lined molecular distillation apparatus and its separation and purification method. Background Technology

[0002] In the material separation and purification processes of chemical, pharmaceutical, and other fields, the performance of distillation equipment directly affects product quality and production efficiency. Currently, the mainstream distillation equipment on the market is mainly divided into two categories: one is stainless steel equipment, which has the advantage of high strength and can meet the needs of large-scale production. However, when processing acidic or certain chemical materials, it is prone to the precipitation of metal ions such as iron ions, resulting in substandard product purity and failing to meet the requirements of high-precision production processes. The second category is glass equipment: its smooth surface and corrosion resistance can avoid metal ion contamination, but glass is fragile and can only be used to make small-scale experimental equipment, making it unsuitable for large-scale industrial production.

[0003] Enameled glass is made by spraying acid-resistant enamel onto the surface of a steel billet. It combines the high strength of stainless steel with the corrosion resistance and smooth surface properties of glass, providing a material basis for solving the above-mentioned equipment defects. However, there is currently no mature equipment or supporting method to combine this material with molecular distillation technology. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a glass-lined molecular distillation apparatus and its separation and purification method.

[0005] The technical solution of the present invention: a glass-lined molecular distillation apparatus, comprising a transmission mechanism assembly, a transmission mechanism fixing bracket, an evaporation cylinder assembly, a cooling system assembly, and a material distributor assembly;

[0006] The transmission mechanism assembly includes a motor, a reducer, and a stirrer. The motor and the reducer are connected by a flange, the reducer is connected to the transmission mechanism fixed bracket by a flange, and the transmission mechanism fixed bracket is connected to the stirrer by a coupling.

[0007] The evaporator assembly includes a transition piece, an evaporator, and a heavy component collector. The transmission mechanism fixing bracket is connected to the transition piece via a flange. The transition piece is connected to the evaporator via a snap-fit ​​connection. The evaporator is connected to the heavy component collector via a snap-fit ​​connection.

[0008] The cooling system components include a tube condenser and a cooling water tank. The heavy component collector is connected to the tube condenser via a flange, and the tube condenser is connected to the cooling water tank via a flange.

[0009] The material distributor assembly is located inside the evaporation cylinder.

[0010] Preferably, the speed reducer is mounted on a speed reducer frame.

[0011] Preferably, the evaporator, stirrer, tube condenser, and heavy component collector are all made of glass-lined material.

[0012] Preferably, the evaporator is provided with a stirring port A, a temperature measuring and feeding port B, and a sight glass port D; the tube condenser is provided with a steam inlet and a steam outlet; the cooling water tank is provided with a refrigerant inlet and a refrigerant outlet; and the heavy component collector is provided with a heavy component outlet and a light component outlet.

[0013] A glass-lined molecular distillation apparatus and its separation and purification method include the following steps;

[0014] S1: Turn on the matching vacuum system to create a high vacuum environment inside the distiller;

[0015] S2: The transmission mechanism assembly is activated, and the motor drives the reducer and agitator to operate;

[0016] S3: The material is evenly distributed on the inner wall of the evaporation cylinder by the material distributor assembly, and the scraper of the agitator scrapes the inner wall of the evaporation cylinder to form a uniform liquid film.

[0017] S4: Steam is introduced through the steam inlet to heat the evaporator. The heating temperature is controlled from -19℃ to 200℃, and the temperature difference in the system does not exceed 100℃, so that the light components with low boiling points in the liquid film evaporate rapidly.

[0018] S5: The evaporated light component comes into instantaneous contact with the tubes of the tube condenser, and after condensation, flows into the lower end of the heavy component collector and is collected through the light component outlet;

[0019] S6: High-boiling-point heavy components flow naturally down the inner wall of the evaporator and enter the upper part of the heavy component collector, where they are collected through the heavy component outlet.

[0020] Preferably, in step S5, the steam is discharged through a steam outlet after heat exchange.

[0021] Preferably, in step S6, cooling water enters the cooling water tank through the refrigerant inlet to provide refrigerant for the tube condenser, and the cooled water after heat exchange is discharged through the refrigerant outlet.

[0022] Compared with existing technologies, the beneficial effects of this invention are: by using enamel material, this invention completely solves the problem of metal ion precipitation in stainless steel equipment, while avoiding the fragility of glass equipment, enabling large-scale industrial production. During operation, the material distributor and scraper work together to form a uniform liquid film, increasing the evaporation area. The high vacuum environment reduces the evaporation temperature. Combined with the tube condensation system, the recovery rate of light components can reach over 95%. Attached Figure Description

[0023] Figure 1This is a schematic cross-sectional view of a glass-lined molecular distillation apparatus according to the present invention;

[0024] Figure 2 This is a schematic diagram showing the positions of the various nozzles in a glass-lined molecular distillation apparatus proposed in this invention.

[0025] Figure 3 This is a schematic diagram of the structure of a glass-lined molecular distillation apparatus proposed in this invention;

[0026] Reference numerals: 1. Motor; 2. Reducer; 3. Transmission mechanism mounting bracket; 4. Agitator; 5. Transition component; 6. Evaporator; 7. Heavy component collector; 8. Shell and tube condenser; 9. Cooling water tank; 10. Material distributor assembly. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] See attached document Figures 1-3 A glass-lined molecular distillation apparatus includes a transmission mechanism assembly, a transmission mechanism fixing bracket 3, an evaporation cylinder assembly, a cooling system assembly, and a material distributor assembly 10.

[0029] The transmission mechanism assembly includes a motor 1, a reducer 2 and an agitator 4. The motor 1 and the reducer 2 are connected by a flange, the reducer 2 is connected to the transmission mechanism fixed bracket 3 by a flange, and the transmission mechanism fixed bracket 3 is connected to the agitator 4 by a coupling.

[0030] The evaporator assembly includes a transition piece 5, an evaporator 6, and a heavy component collector 7. The transmission mechanism fixing bracket 3 is connected to the transition piece 5 via a flange, the transition piece 5 is connected to the evaporator 6 via a snap-fit ​​connection, and the evaporator 6 is connected to the heavy component collector 7 via a snap-fit ​​connection.

[0031] The cooling system components include a tube condenser 8, a cooling water tank 9, a heavy component collector 7 connected to the tube condenser 8 via a flange, a tube condenser 8 connected to the cooling water tank 9 via a flange, and a material distributor assembly 10 disposed inside the evaporator 6.

[0032] Specifically, the reducer 2 is mounted on the reducer frame. The evaporator 6, stirrer 4, tube condenser 8 and heavy component collector 7 are all made of enamel. The evaporator 6 is equipped with a stirring port, a temperature measuring and feeding port and a sight glass port. The tube condenser 8 is equipped with a steam inlet and a steam outlet. The cooling water tank 9 is equipped with a refrigerant inlet and a refrigerant outlet. The heavy component collector 7 is equipped with a heavy component outlet and a light component outlet.

[0033] Reference Appendix Figure 2 , Figure 2 In the diagram, A, B, and D represent the mixing port, the temperature measuring and feeding port, and the sight glass port, respectively, and their specific locations can be seen from the diagram.

[0034] Specifically, in this invention, the transmission mechanism assembly, as a power source, includes a motor 1, a reducer 2, and a stirrer 4. The motor 1 and the reducer 2 are rigidly connected via flanges. The bottom of the reducer 2 is connected to the transmission mechanism fixing bracket 3 via flanges for fixation. The output end of the fixing bracket 3 is connected to the stirrer 4 via a coupling, transmitting power to the scraper structure of the stirrer 4.

[0035] Evaporator assembly: Enables material evaporation and preliminary component separation, including transition piece 5, evaporator 6, and heavy component collector 7. The upper end of transition piece 5 is connected to the flange of fixed bracket 3, and the lower end is detachably connected to evaporator 6 via a snap fastener; the lower end of evaporator 6 is connected to heavy component collector 7 via a snap fastener, forming a closed evaporation space.

[0036] Cooling system components: These components enable the condensation of light components and include a shell-and-tube condenser 8 and a cooling water tank 9. The upper end of the shell-and-tube condenser 8 is connected to the flange of the heavy component collector 7, and the lower end is connected to the flange of the cooling water tank 9. The cooling water tank 9 circulates refrigerant through its inlet and outlet water to provide continuous cooling for the shell-and-tube condenser 8.

[0037] Material distributor assembly 10: Installed on the upper part of the evaporation cylinder 6 and connected to the feed port B, it is used to evenly disperse the material to the inner wall of the evaporation cylinder 6, laying the foundation for the formation of liquid film.

[0038] The present invention also discloses a method for separation and purification using a glass-lined molecular distillation apparatus, comprising the following steps;

[0039] S1: Turn on the matching vacuum system to create a high vacuum environment inside the distiller;

[0040] S2: The transmission mechanism assembly is activated, and motor 1 drives reducer 2 and stirrer 4 to operate;

[0041] S3: The material is evenly distributed on the inner wall of the evaporation cylinder 6 by the material distributor assembly 10, and the scraper of the stirrer 4 scrapes the inner wall of the evaporation cylinder 6 to form a uniform liquid film.

[0042] S4: Steam is introduced through the steam inlet to heat the evaporator 6. The heating temperature is controlled from -19℃ to 200℃, and the temperature difference in the system does not exceed 100℃, so that the light components with low boiling points in the liquid film evaporate rapidly.

[0043] S5: The evaporated light component comes into instantaneous contact with the tubes of the tube condenser 8, and after condensation, flows into the lower end of the heavy component collector 7 and is collected through the light component outlet;

[0044] S6: High-boiling-point heavy components flow naturally down the inner wall of evaporator 6 and enter the upper end of heavy component collector 7, where they are collected through heavy component outlet.

[0045] Specifically, in step S5, the steam is discharged through the steam outlet after heat exchange. In step S6, the cooling water enters the cooling water tank 9 through the refrigerant inlet to provide refrigerant for the shell and tube condenser 8. The cooling water after heat exchange is discharged through the refrigerant outlet.

[0046] Specifically, this method can be further divided into:

[0047] Vacuum pretreatment: Turn on the external vacuum system to create an extremely high vacuum environment inside the equipment, lower the boiling point of the material, and create conditions for low-temperature evaporation;

[0048] Transmission start-up: Turn on motor 1, and after being reduced in speed by reducer 2, drive agitator 4 to rotate. After the scraper speed stabilizes, proceed to the next step.

[0049] Material feeding: Start the feeding system and the mixed material enters the material distributor assembly 10 through the temperature measuring feeding port;

[0050] Liquid film formation: The material is evenly distributed on the inner wall of the evaporation cylinder 6 through the distribution structure of the distributor 10, and the scraper of the stirrer 4 scrapes the material into a liquid film of uniform thickness, increasing the evaporation area.

[0051] Heating and evaporation: Steam is introduced into the evaporation cylinder 6 through the steam inlet, and the heating temperature is controlled from -19℃ to 200℃. The temperature difference between different areas in the system does not exceed 100℃. The low-boiling-point light components in the liquid film are rapidly evaporated into gaseous state under high vacuum and low temperature environment, while the high-boiling-point heavy components remain in liquid state.

[0052] Light component condensation and collection: The gaseous light component diffuses to the surface of the tube condenser 8, condenses into a liquid after contacting the low-temperature tubes, and flows along the tube wall into the lower end of the heavy component collector 7, and is collected through the light component outlet;

[0053] Heavy component collection: Liquid heavy components flow down the inner wall of the evaporation cylinder 6 by gravity and enter the collection chamber at the upper end of the heavy component collector 7, where they are collected through the heavy component outlet.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A glass-lined molecular distillation apparatus, characterized in that, It includes a transmission mechanism assembly, a transmission mechanism fixed bracket (3), an evaporator body assembly, a cooling system assembly, and a material distributor assembly (10). The transmission mechanism assembly includes a motor (1), a reducer (2) and a stirrer (4). The motor (1) and the reducer (2) are connected by a flange. The reducer (2) and the transmission mechanism fixed bracket (3) are connected by a flange. The transmission mechanism fixed bracket (3) and the stirrer (4) are connected by a coupling. The evaporator assembly includes a transition piece (5), an evaporator (6), and a heavy component collector (7). The transmission mechanism fixing bracket (3) is connected to the transition piece (5) via a flange. The transition piece (5) is connected to the evaporator (6) via a snap-fit ​​connection. The evaporator (6) is connected to the heavy component collector (7) via a snap-fit ​​connection. The cooling system components include a tube condenser (8) and a cooling water tank (9). The heavy component collector (7) is connected to the tube condenser (8) via a flange, and the tube condenser (8) is connected to the cooling water tank (9) via a flange. The material distributor assembly (10) is disposed inside the evaporator cylinder (6).

2. The glass-lined molecular distillation apparatus according to claim 1, characterized in that, The speed reducer (2) is mounted on the speed reducer frame.

3. The glass-lined molecular distillation apparatus according to claim 1, characterized in that, The evaporator (6), stirrer (4), tube condenser (8) and heavy component collector (7) are all made of glass enamel.

4. The glass-lined molecular distillation apparatus and its separation and purification method according to claim 1, characterized in that, The evaporator (6) is provided with a stirring port, a temperature measuring and feeding port and a sight glass port; the tube condenser (8) is provided with a steam inlet and a steam outlet; the cooling water tank (9) is provided with a refrigerant inlet and a refrigerant outlet; and the heavy component collector (7) is provided with a heavy component outlet and a light component outlet.

5. A method for separation and purification using a glass-lined molecular distillation apparatus, based on the glass-lined molecular distillation apparatus of claim 4, characterized in that... Includes the following steps: S1: Turn on the matching vacuum system to create a high vacuum environment inside the distiller; S2: The transmission mechanism assembly is activated, and the motor (1) drives the reducer (2) and the agitator (4) to operate; S3: The material is evenly distributed on the inner wall of the evaporator (6) by the material distributor assembly (10), and the scraper of the stirrer (4) scrapes the inner wall of the evaporator (6) to form a uniform liquid film. S4: Steam is introduced through the steam inlet to heat the evaporator (6), and the heating temperature is controlled from -19℃ to 200℃. The temperature difference in the system does not exceed 100℃, so that the light components with low boiling points in the liquid film evaporate rapidly. S5: The evaporated light component comes into instantaneous contact with the tubes of the tube condenser (8), and after condensation, flows into the lower end of the heavy component collector (7) and is collected through the light component outlet; S6: The high-boiling-point heavy components flow naturally down the inner wall of the evaporator (6) and enter the upper end of the heavy component collector (7), and are collected through the heavy component outlet.

6. The method for separation and purification using a glass-lined molecular distillation apparatus according to claim 5, characterized in that, In step S5, the steam is discharged through the steam outlet after heat exchange.

7. The method for separation and purification using a glass-lined molecular distillation apparatus according to claim 5, characterized in that, In step S6, cooling water enters the cooling water tank (9) through the refrigerant inlet to provide refrigerant for the tube condenser (8), and the cooled water after heat exchange is discharged through the refrigerant outlet.

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