Molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof

Abstract

The invention provides a molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof, and belongs to the technical field of distillation equipment. Comprising a distillation retort, a vacuum unit, a light molecular substance storage tank, a heavy molecular substance storage tank, a mixed impurity storage tank and a storage tank, a scraping component for forming a liquid film is arranged in the distillation retort, a hollow condensation column is arranged at the bottom in the distillation retort, and a separation component for separating light and heavy gas phase molecules is arranged at the top of the hollow condensation column. Light and heavy molecular substances separated by the separation assembly are condensed by the hollow condensation column and then are respectively conveyed to the light molecular substance storage tank and the heavy molecular substance storage tank, so that the light and heavy molecular substances and mixed impurities thereof can be efficiently removed; light and heavy molecular substances and mixed impurities thereof can be removed without removing the heavy molecular substances in the mixed liquid, so that the cost is reduced, and the distillation step is simplified.

Description

Technical Field

[0001] The invention provides a molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof, belonging to the technical field of distillation equipment. Background Art

[0002] Molecular distillation is a special liquid-liquid separation technology. It is different from the traditional distillation separation principle based on boiling point difference. Instead, it relies on the difference in the mean free path of molecular motion of different substances to achieve separation. When the liquid mixture flows along the heating plate and is heated, the light and heavy molecules will escape from the liquid surface and enter the gas phase. Since the free paths of light and heavy molecules are different, the molecules of different substances move different distances after escaping from the liquid surface. If a condensation plate can be properly set, the light molecules will reach the condensation plate and be condensed and discharged, while the heavy molecules cannot reach the condensation plate and are discharged with the mixed liquid, thereby achieving the purpose of material separation.

[0003] The currently existing molecular distillation system can basically meet the needs of use. However, since the heavy molecules cannot reach the condensation plate and are discharged with the mixed liquid, if the heavy molecules need to be removed, it is inevitable to add a distillation device for removing heavy molecules on the side of the distillation device for removing light molecules, so as to separate the heavy molecules and mixed impurities in the mixed liquid and achieve the removal of heavy molecules. This distillation method is more expensive and the distillation steps are more complicated. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the present invention provides a molecular distillation system that can efficiently remove light and heavy molecular substances and their mixed impurities. It is unnecessary to remove the heavy molecular substances in the mixed liquid to achieve the removal of light and heavy molecular substances and their mixed impurities, thereby reducing costs and simplifying the distillation steps.

[0005] The present invention provides a molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof. The proposed technical scheme comprises a distillation tank, a vacuum unit, a light molecular substance storage tank, a heavy molecular substance storage tank, a mixed impurity storage tank and a material storage tank. The distillation tank is provided with a scraping component for forming a liquid film, a hollow condensation column is provided at the bottom of the distillation tank, a separation component for separating light and heavy gas phase molecules from gas phase molecules is provided at the top of the hollow condensation column, the separation component comprises a lower gathering hollow disk, a plurality of gas transmission pipes are provided on the circumference of the top of the lower gathering hollow disk, an upper gathering disk is provided at the top between the gas transmission pipes, the bottoms of the lower gathering hollow disk and the upper gathering disk are both provided with output pipes arranged on the inner side of the gas transmission pipe, the output pipes pass through the hollow condensation column and the distillation tank and are respectively connected with the light molecular substance storage tank and the heavy molecular substance storage tank, both sides of the upper gathering disk are provided with connected exhaust pipes, and an exhaust fan is provided on the inner wall of the pipe mouth of the exhaust pipe for sucking both the light gas phase molecular substances and the heavy gas phase molecular substances into the exhaust pipe.

[0006] Furthermore, the scraping assembly includes a rotating rod, one end of which is provided with a liquid separation plate placed above the separation assembly, scrapers are symmetrically provided on both sides of the bottom of the liquid separation plate, and the side walls of the scrapers are provided with scraping pads that fit the inner wall of the distillation tank.

[0007] Furthermore, a driving motor is provided on the top of the distillation tank, and an output end of the driving motor is inserted into the distillation tank and fixedly connected to the other end of the rotating rod.

[0008] Furthermore, a feed port connected to the storage tank is provided at the top of the distillation tank, and a feed control valve is provided on the feed port for adding the material to be molecularly distilled into the distillation tank.

[0009] Furthermore, a discharge port connected to the mixed impurity storage tank is provided on the lower side wall of the distillation tank, and a discharge control valve is provided on the discharge port for conveying the impurities in the mixed liquid after distillation to the mixed impurity storage tank for storage.

[0010] Furthermore, the side wall of the distillation tank is provided with a vacuum port connected to the vacuum unit for performing vacuum treatment on the interior of the distillation tank.

[0011] Furthermore, the outer wall of the distillation tank is provided with a heating jacket.

[0012] Furthermore, the hollow condensation column is made of stainless steel, and a serpentine cooling pipe is provided in the hollow condensation column to condense and liquefy the light and heavy gas phase molecular substances in the output pipe.

[0013] Furthermore, the output pipe at the bottom of the lower gathering hollow plate is connected to the heavy molecular substance storage tank, and the output pipe at the bottom of the upper gathering plate is connected to the light molecular substance storage tank, which are used to collect the light and heavy molecular substances that have been condensed respectively.

[0014] The beneficial effects of the present invention are as follows: the residual impurities in the raw material mixed liquid of the present invention flow down to the bottom of the distillation tank, and are transported to the mixed impurity storage tank through the discharge port for storage. After the light and heavy molecular substances separated by the separation component are condensed by the hollow condensation column, the condensed and liquefied light and heavy molecular substances are respectively transported to the light molecular substance storage tank and the heavy molecular substance storage tank, thereby being able to efficiently remove the light and heavy molecular substances and their mixed impurities. Compared with the traditional method of directly discharging the heavy molecular substances along the mixed liquid, the light and heavy molecular substances and their mixed impurities can be removed without removing the heavy molecular substances in the mixed liquid, thereby reducing costs and simplifying the distillation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a plan view of the present invention.

[0016] Figure 2It is a schematic diagram of the partial explosion structure of the distillation tank of the present invention.

[0017] Figure 3 It is a plan view of the distillation tank of the present invention.

[0018] Figure 4 It is a schematic diagram of the separation component layout structure of the present invention.

[0019] Figure 5 It is a partial enlarged plan view of the exhaust pipe of the present invention.

[0020] 1. Distillation tank; 2. Vacuum unit; 3. Light molecule storage tank; 4. Heavy molecule storage tank; 5. Mixed impurity storage tank; 6. Storage tank; 7. Scraping assembly; 8. Separation assembly; 9. Hollow condensation column; 10. Feed inlet; 11. Feed control valve; 12. Discharge port; 13. Discharge control valve; 14. Vacuum port; 15. Heating jacket; 16. Driving motor; 70. Rotating rod; 71. Separation plate; 72. Scraper; 73. Scraping pad; 80. Lower gathering hollow plate; 81. Gas transmission pipe; 82. Upper gathering plate; 83. Output pipe; 84. Exhaust pipe; 85. Suction fan; 90. Serpentine cooling pipe. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings.

[0022] According to the attached Figure 1 , 2 3: The present invention is a molecular distillation system that can efficiently remove light and heavy molecular substances and their mixed impurities, comprising a distillation tank 1, a vacuum unit 2, a light molecular substance storage tank 3, a heavy molecular substance storage tank 4, a mixed impurity storage tank 5, and a storage tank 6. The top of the distillation tank 1 is provided with a feed port 10 connected to the storage tank 6, and the feed port 10 is provided with a feed control valve 11 for adding materials to be molecularly distilled into the distillation tank 1. The lower wall of the distillation tank 1 is provided with a discharge port 12 connected to the mixed impurity storage tank 5, and the discharge port 12 is provided with a discharge control valve 13 for The impurities in the mixed liquid after distillation are transported to the mixed impurity storage tank 5 for storage. The side wall of the distillation tank 1 is provided with a vacuum port 14 connected to the vacuum unit 2 for vacuuming the inside of the distillation tank 1. The outer wall of the distillation tank 1 is provided with a heating jacket 15. By connecting the heating jacket 15 with an external hot steam generating device, the raw material liquid film formed by scraping on the inner wall of the distillation tank 1 is heated and evaporated, thereby separating light and heavy molecular substances from the raw material liquid. The remaining raw material mixed liquid impurities flow down to the bottom of the distillation tank 1 and are transported to the mixed impurity storage tank 5 through the discharge port 12 for storage.

[0023] According to the attached Figure 2 , 45: a hollow condensation column 9 is provided at the bottom of the distillation tank 1, and a separation component 8 for separating light and heavy gas phase molecules is provided at the top of the hollow condensation column 9, the separation component 8 includes a lower gathering hollow disk 80, a plurality of gas pipes 81 are provided on the circumference of the top of the lower gathering hollow disk 80, an upper gathering disk 82 is provided on the top between the gas pipes 81, and an output pipe 83 disposed on the inner side of the gas pipe 81 is provided at the bottom of the lower gathering hollow disk 80 and the upper gathering disk 82, the output pipe 83 passes through the hollow condensation column 9 and the distillation tank 1 and is respectively connected with the light molecular substance storage tank 3 and the heavy molecular substance storage tank 4, and interconnected exhaust pipes 84 are provided on both sides of the upper gathering disk 82, and an exhaust fan 85 is provided on the inner wall of the pipe mouth of the exhaust pipe 84, which is used to suck the light gas phase molecular substances and the heavy gas phase molecular substances into the exhaust pipe 84, the output pipe 83 at the bottom of the lower gathering hollow disk 80 is connected with the heavy molecular substance storage tank 4, and the hollow condensation column 9 is made of stainless steel. A serpentine cooling pipe 90 is provided in the hollow condensation column 9, and a coolant is transported into the serpentine cooling pipe 90 to condense and liquefy the light and heavy gas-phase molecular substances in the output pipe 83. The output pipe 83 at the bottom of the upper gathering plate 82 is connected to the light molecular substance storage tank 3, and is used to collect the light and heavy molecular substances that have been condensed respectively. The light gas-phase molecular substances and the heavy gas-phase molecular substances are sucked into the exhaust pipe 84 through the suction fan 85, and then flow into the upper gathering plate 82. At this time, the heavy gas-phase molecular substances are continuously transported downward along the gas transmission pipe 81 and gathered in the middle of the lower gathering hollow plate 80. The light gas-phase molecular substances are continuously accumulated and gathered in the middle of the upper gathering plate 82 due to their light weight. The accumulated light gas-phase molecular substances and heavy gas-phase molecular substances are transported into the hollow condensation column 9 along the corresponding transmission and output pipes 83, so that the light and heavy gas-phase molecular substances are condensed and liquefied, thereby being able to efficiently remove the light and heavy molecular substances in the raw materials.

[0024] According to the attached Figure 2 , 3 As shown: a scraping assembly 7 for forming a liquid film is provided in the distillation tank 1, and the scraping assembly 7 includes a rotating rod 70, one end of the rotating rod 70 is provided with a liquid separation plate 71 placed above the separation assembly 8, scrapers 72 are symmetrically provided on both sides of the bottom of the liquid separation plate 71, and the side walls of the scraper 72 are provided with a scraping pad 73 that fits the inner wall of the distillation tank 1, and a driving motor 16 is provided on the top of the distillation tank 1. The output end of the driving motor 16 is inserted into the distillation tank 1 and fixedly connected to the other end of the rotating rod 70. By starting the driving motor 16, the rotating rod 70 is driven to rotate, and then the liquid separation plate 71 is driven to rotate, so that the raw material on the top of the liquid separation plate 71 is thrown onto the inner wall of the distillation tank 1. The rotation of the liquid separation plate 71 drives the scraper 72 and the scraping pad 73 to rotate around the rotating rod 70, and then the raw material thrown onto the inner wall of the distillation tank 1 is scraped evenly, so that a layer of raw material liquid film can be formed on the inside of the distillation tank 1.

[0025] Working principle:

[0026] When in use, the heating jacket 15 is connected to the external hot steam generating device, the vacuum unit 2 is started to vacuum the distillation tank 1 through the vacuum port 14, the raw material stored in the storage tank 6 is added to the distillation tank 1 through the feed port 10, and the scraping component 7 is driven by the motor to work, so that the raw material thrown onto the inner wall of the distillation tank 1 is scraped evenly, and a layer of raw material liquid film can be formed on the inside of the distillation tank 1, and the hot steam inside the heating jacket 15 heats the raw material liquid film, so that the raw material liquid film formed by scraping on the inner wall of the distillation tank 1 is heated and evaporated, thereby separating the light and heavy molecular substances from the raw material liquid, and the remaining raw material mixed liquid impurities flow down to the bottom of the distillation tank 1, and are transported to the mixed impurity storage tank 5 through the discharge port 12 for storage, and the light gas phase molecular substances and heavy gas phase molecular substances are sucked into the exhaust pipe 8 by the suction fan 85. 4, and then flows into the upper gathering plate 82, at this time, the heavy gas phase molecular substances are continuously transported downward along the gas transmission pipe 81 and gathered in the middle of the lower gathering hollow plate 80, and the light gas phase molecular substances are continuously accumulated and gathered in the middle of the upper gathering plate 82 due to their light weight, and the accumulated light gas phase molecular substances and heavy gas phase molecular substances are transported along the corresponding transmission and output pipes 83 to the hollow condensation column 9, so that the light and heavy gas phase molecular substances are condensed and liquefied, and the condensed and liquefied light and heavy molecular substances are respectively transported to the light molecular substance storage tank 3 and the heavy molecular substance storage tank 4, so that the light and heavy molecular substances and their mixed impurities can be efficiently removed. Compared with the traditional method of directly discharging the heavy molecular substances along the mixed liquid, the light and heavy molecular substances and their mixed impurities can be removed without removing the heavy molecular substances in the mixed liquid, thereby reducing costs and simplifying the distillation steps.

[0027] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof, comprising a distillation tank (1), a vacuum unit (2), a light molecular substance storage tank (3), a heavy molecular substance storage tank (4), a mixed impurity storage tank (5), and a material storage tank (6), characterized in that: The distillation tank (1) is provided with a scraping assembly (7) for forming a liquid film, the bottom of the distillation tank (1) is provided with a hollow condensation column (9), the top of the hollow condensation column (9) is provided with a separation assembly (8) for separating light and heavy gas phase molecules, the separation assembly (8) comprises a lower gathering hollow disk (80), a plurality of gas transmission pipes (81) are provided on the circumference of the top of the lower gathering hollow disk (80), an upper gathering disk (82) is provided between the gas transmission pipes (81), and the lower gathering hollow disk (80) is provided with a plurality of gas transmission pipes (81). ), and an output pipe (83) disposed on the inner side of the gas transmission pipe (81) is disposed at the bottom of the upper gathering plate (82); the output pipe (83) passes through the hollow condensation column (9) and the distillation tank (1) and is respectively connected to the light molecular substance storage tank (3) and the heavy molecular substance storage tank (4); and interconnected exhaust pipes (84) are disposed on both sides of the upper gathering plate (82); an exhaust fan (85) is disposed on the inner wall of the pipe opening of the exhaust pipe (84) for sucking both the light gas phase molecular substances and the heavy gas phase molecular substances into the exhaust pipe (84).

2. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The scraping assembly (7) comprises a rotating rod (70), one end of which is provided with a liquid separation plate (71) placed above the separation assembly (8), scrapers (72) are symmetrically provided on both sides of the bottom of the liquid separation plate (71), and the side walls of the scrapers (72) are provided with scraping pads (73) that are in contact with the inner wall of the distillation tank (1).

3. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 2, characterized in that: A driving motor (16) is provided on the top of the distillation tank (1), and an output end of the driving motor (16) is inserted into the distillation tank (1) and fixedly connected to the other end of the rotating rod (70).

4. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The top of the distillation tank (1) is provided with a feed port (10) which is connected to the storage tank (6), and the feed port (10) is provided with a feed control valve (11) for adding materials to be molecularly distilled into the distillation tank (1).

5. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The lower wall of the distillation tank (1) is provided with a discharge port (12) which is connected to the mixed impurity storage tank (5), and the discharge port (12) is provided with a discharge control valve (13) for conveying the impurities in the mixed liquid after distillation to the mixed impurity storage tank (5) for storage.

6. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The side wall of the distillation tank (1) is provided with a vacuum port (14) which is connected to the vacuum unit (2) and is used to perform vacuum treatment on the interior of the distillation tank (1).

7. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The outer wall of the distillation tank (1) is provided with a heating jacket (15).

8. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The hollow condensation column (9) is made of stainless steel and is provided with a serpentine cooling pipe (90) to condense and liquefy the light and heavy gas phase molecular substances in the output pipe (83).

9. A molecular distillation system capable of efficiently removing light and heavy molecular substances and mixed impurities thereof according to claim 1, characterized in that: The output pipe (83) at the bottom of the lower collecting hollow plate (80) is connected to the heavy molecule substance storage tank (4), and the output pipe (83) at the bottom of the upper collecting plate (82) is connected to the light molecule substance storage tank (3), so as to collect the light and heavy molecule substances after condensation respectively.

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