A short path distillation apparatus
By designing a short-path distillation apparatus and utilizing a combination of distillation tubes and cooling tubes, efficient separation of liquid materials is achieved, solving the problem of difficulty in separating light and heavy components in existing distillers, and making it suitable for large-scale distillation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIELING BOTAI ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-09
AI Technical Summary
Existing stills have difficulty separating light and heavy components and are not suitable for large-scale distillation. Uniform liquid film coverage and tumbling are common, resulting in a small heat exchange area in the still.
Design a short-path distillation apparatus, including a distillation tank, distillation tubes, cooling tubes, and a liquid separator. The liquid material is heated by the distillation tubes in the heating zone, the gas is condensed by the cooling tubes, and the liquid separator separates the light and heavy components, avoiding liquid film formation and tumbling.
It achieves effective separation of liquid materials, is suitable for large-scale distillation, avoids liquid film tumbling, and improves distillation efficiency.
Smart Images
Figure CN224331527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distillation technology, and in particular to a short-path distillation apparatus. Background Technology
[0002] Distillers are the most commonly used process equipment in chemical production. Through distillation, organic or inorganic compounds with different boiling points can be separated individually or in groups to achieve the purpose of separation and purification.
[0003] In existing technology, materials typically enter the still radially from above the heating zone, are distributed onto the heating walls of the still by a distributor, and then a rotating scraper continuously and uniformly scrapes the material into a thin, uniform liquid film on the heating surface, propelling it downwards in a spiral motion. During this process, the rotating scraper ensures high-speed turbulence in the continuous and uniform liquid film and prevents coking and scaling on the heating surface, thereby improving the overall transfer coefficient. Lighter components in the material are evaporated, forming an upward-flowing vapor stream that passes through a vapor-liquid separator to an external condenser directly connected to the still; heavier components are discharged from the cone at the bottom of the still.
[0004] Furthermore, existing stills have relatively difficult problems in separating light and heavy components, and it is difficult to ensure that the liquid film evenly covers all evaporation surfaces. In addition, tumbling often occurs in the still during liquid flow, so the mist generated by tumbling often splashes onto the condensation surface, which can easily lead to a small heat exchange area in the still. Consequently, existing stills are only suitable for laboratory and small-scale distillation. Utility Model Content
[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.
[0006] Therefore, this utility model provides a short-path distillation apparatus that can separate light and heavy components in liquid materials, and is also suitable for large-scale distillation.
[0007] A short-path distillation apparatus according to an embodiment of the present invention includes:
[0008] The distillation tank has a heating zone; the outer wall of the distillation tank is provided with a hot medium inlet, a hot medium outlet, a cold medium inlet, a cold medium outlet, a feed inlet, a first discharge outlet, and a second discharge outlet; wherein, the hot medium inlet and the hot medium outlet are both connected to the heating zone;
[0009] The distillation tube is located within the heating area and is connected to the feed inlet, the first discharge outlet, and the second discharge outlet.
[0010] The cooling pipe, at least part of which is located inside the distillation tube and is coaxially arranged with the distillation tube; the cooling pipe is connected to both the cold medium inlet and the cold medium outlet; the cooling pipe is used to condense the gas corresponding to the liquid material that has been heated and vaporized by the hot medium in the heated area of the distillation tube to obtain condensed liquid.
[0011] The liquid separation assembly is located inside the distillation tank and below the distillation tube. The liquid separation assembly is used to guide the liquid material that has been heated and vaporized by the heat medium in the unheated area of the distillation tube to the first discharge port and to guide the condensed liquid to the second discharge port.
[0012] Optionally, the distillation tank includes a first shell section, a second shell section, a third shell section, a fourth shell section, and a fifth shell section connected in sequence;
[0013] The first shell section has a first cold medium region and a second cold medium region that are not connected to each other. The first cold medium region is connected to the cold medium inlet, and the second cold medium region is connected to the cold medium outlet.
[0014] The second housing section has a feeding space; the feeding port is connected to the outer wall of the second housing section and communicates with the feeding space;
[0015] The third shell section is provided with a heat medium inlet and a heat medium outlet, and the heating area is located on the third shell section;
[0016] The fourth shell section has a first discharge space; the first discharge port is located on the fourth shell section and communicates with the first discharge space;
[0017] The fifth shell section has a second discharge space; the second discharge port is located on the fourth shell section and communicates with the second discharge space;
[0018] The cooling pipe includes a first cooling section, a second cooling section, and a U-shaped section. The U-shaped section is located inside the fifth shell section. The first end of the first cooling section is connected to the first cold medium region, and the second end of the second cooling section is connected to the second cold medium region. The second ends of the first cooling section and the second cooling section both pass through the second shell section, the third shell section, the fourth shell section, and the fifth shell section before connecting to the U-shaped section.
[0019] Optionally, a first partition is provided between the first housing section and the second housing section, and the first end of the first cooling section and the first end of the second cooling section both pass through the first partition and are fixed on the first partition.
[0020] Optionally, a second partition is provided between the second housing section and the third housing section, and a third partition is provided between the third housing section and the fourth housing section, with both the first cooling section and the second cooling section passing through the second partition and the third partition;
[0021] The distillation tube includes a first distillation tube and a second distillation tube. The first distillation tube is sleeved on the outside of the first cooling section, and the second distillation tube is sleeved on the outside of the second cooling section. The first end of the first distillation tube and the first end of the second distillation tube both pass through the second partition and are fixed on the second partition. The second end of the first distillation tube and the second end of the second distillation tube both pass through the third partition and are fixed on the third partition, so that the first distillation tube and the second distillation tube are both connected to the feed space and the first discharge space.
[0022] Optionally, the second end of the distillation tube has a serrated structure.
[0023] Optionally, the liquid separation assembly includes a first cylindrical section and a second cylindrical section. The first cylindrical section is sleeved on the outside of the first cooling section, and the second cylindrical section is sleeved on the outside of the second cooling section. The first end of the first cylindrical section and the first end of the second cylindrical section are both connected to the first discharge space, and the second end of the first cylindrical section and the second end of the second cylindrical section are both connected to the second discharge space.
[0024] Optionally, a fourth partition is provided between the fourth shell section and the fifth shell section; the first cylinder and the second cylinder are located in the first discharge space, and the second end of the first cylinder and the second end of the second cylinder are both fixed on the fourth partition.
[0025] Optionally, the first cylindrical section and the first cooling section are arranged coaxially, and the second cylindrical section and the second cooling section are arranged coaxially.
[0026] Optionally, a vacuum port is provided on the fourth shell section, and the vacuum port is connected to the first discharge space.
[0027] Optionally, a distributor is provided at one end of the distillation tube near the feed inlet, which is used to add the liquid material entering through the feed inlet into the distillation tube.
[0028] One of the above technical solutions has at least the following advantages or beneficial effects:
[0029] In a short-path distillation apparatus according to an embodiment of this utility model, by placing the distillation tube within the heating zone, liquid material entering through the feed inlet can be vaporized by the heat medium in the heating zone into a gas corresponding to that portion of the liquid material after entering the distillation tube. Then, by placing at least a portion of the cooling tube within the distillation tube and coaxially with it, the gas corresponding to that portion of the liquid material can be condensed by the cooling tube to obtain condensate, thus completing the separation between that portion of the liquid material and the other portion of the liquid material that has not been vaporized. Finally, by using a liquid separation assembly located below the distillation tube, the liquid material vaporized by the heat medium in the unheated zone is guided to the first outlet, and the condensate is guided to the second outlet, completing the separation of the liquid material vaporized by the heat medium in the unheated zone and the condensate. Therefore, the short-path distillation apparatus provided in this application can separate the light and heavy components in liquid materials. That is, it can separate the liquid material that is heated and vaporized by the heat medium in the unheated area from the liquid material that can be heated and vaporized by the heat medium in the heated area. At the same time, because the liquid material does not form a liquid film during the separation process, there is no tumbling phenomenon in the short-path distillation apparatus. Therefore, the short-path distillation apparatus is also suitable for large-scale distillation. Attached Figure Description
[0030] Figure 1 A schematic diagram of a short-path distillation apparatus according to an embodiment of the present invention is shown;
[0031] Figure 2 A cross-sectional schematic diagram of a short-path distillation apparatus according to an embodiment of the present invention is shown.
[0032] [Explanation of Labels in the Attached Image]
[0033] 1. Distillation tank body; 101. Heating zone; 102. Hot medium inlet; 103. Hot medium outlet; 104. Cold medium inlet; 105. Cold medium outlet; 106. Feed inlet; 107. First discharge outlet; 108. Second discharge outlet; 109. First shell section; 1010. Second shell section; 1011. Third shell section; 1012. Fourth shell section; 1013. Fifth shell section; 1014. First cold medium zone; 1015. Second cold medium zone; 1016. Feeding space; 1017. First discharge space; 1018. Second discharge space; 1019. First partition; 1020. Temperature measuring port; 1021. Second partition; 1022. Third partition; 1023. Fourth partition; 1024. Vacuum port;
[0034] 2. Distillation tube;
[0035] 3. Cooling pipes, 301, first cooling section, 302, second cooling section, 302, U-shaped section;
[0036] 4. Liquid separation assembly, 401, first cylinder section, 402, second cylinder section;
[0037] 5. Fabric feeder;
[0038] 6. Recombinant component storage tank;
[0039] 7. Light component storage tank. Detailed Implementation
[0040] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0041] The following description, with reference to the accompanying drawings, describes a short-path distillation apparatus according to some embodiments of the present invention.
[0042] See Figure 1 and Figure 2 This utility model provides a short-path distillation apparatus according to one embodiment. The short-path distillation apparatus includes a distillation tank 1, a distillation tube 2, a cooling tube 3, and a liquid separation assembly 4. The distillation tank 1 has a heating zone 101; the outer wall of the distillation tank 1 is provided with a hot medium inlet 102, a hot medium outlet 103, a cold medium inlet 104, a cold medium outlet 105, a feed inlet 106, a first discharge outlet 107, and a second discharge outlet 108; wherein the hot medium inlet 102 and the hot medium outlet 103 are both connected to the heating zone 101; the distillation tube 2 is located within the heating zone 101, and the distillation tube 2 is connected to the feed inlet 106, the first discharge outlet 107, and the second discharge outlet 108; At least a portion of the cooling pipe 3 is located inside the distillation pipe 2 and is coaxially arranged with the distillation pipe 2; the cooling pipe 3 is connected to both the cold medium inlet 104 and the cold medium outlet 105; the cooling pipe 3 is used to condense the gas corresponding to the liquid material that has been heated and vaporized by the hot medium in the heated area 101 of the distillation pipe 2, to obtain condensed liquid; the liquid separation assembly 4 is located inside the distillation tank 1 and below the distillation pipe 2, and the liquid separation assembly 4 is used to guide the liquid material that has not been heated and vaporized by the hot medium in the unheated area 101 of the distillation pipe 2 to the first outlet 107 and to guide the condensed liquid to the second outlet 108.
[0043] It should be noted that, in the liquid material, the liquid material that is not heated and vaporized by the heat medium of the heating zone 101 can be considered as the heavy component in the liquid material, and the liquid material that can be heated and vaporized by the heat medium of the heating zone 101 can be considered as the light component in the liquid material. Therefore, the first discharge port 107 can be connected to the heavy component holding tank 6, and the second discharge port 108 can be connected to the light component holding tank 7.
[0044] In this embodiment, by placing the distillation tube 2 within the heating zone 101, the liquid material entering through the feed inlet 106 enters the distillation tube 2. A portion of the liquid material is heated and vaporized by the heat medium in the heating zone 101, transforming it into a gas corresponding to that portion of the liquid material. Then, by placing at least a portion of the cooling tube 3 within the distillation tube 2 and coaxially with it, the gas corresponding to that portion of the liquid material is condensed by the cooling tube 3 to obtain condensate, thus completing the separation between that portion of the liquid material and the other portion of the liquid material that has not been heated and vaporized. Finally, the liquid material that has not been heated and vaporized by the heat medium in the heating zone 101 is introduced into the first outlet 107 by the liquid-separating assembly 4 located below the distillation tube 2, and the condensate is introduced into the second outlet 108, completing the separation of the liquid material that has not been heated and vaporized by the heat medium in the heating zone 101 and the condensate. Therefore, the short-path distillation apparatus provided in this application can separate the light and heavy components in liquid materials. That is, it can separate the liquid material that has not been heated and vaporized by the heat medium in the heated zone 101 from the liquid material that can be heated and vaporized by the heat medium in the heated zone 101. At the same time, because the liquid material does not form a liquid film during the separation process, there is no tumbling phenomenon in the short-path distillation apparatus. Therefore, the short-path distillation apparatus is also suitable for large-scale distillation.
[0045] In some possible embodiments, the distillation tank 1 includes a first shell section 109, a second shell section 1010, a third shell section 1011, a fourth shell section 1012, and a fifth shell section 1013 connected in sequence; the first shell section 109 has a first cold medium region 1014 and a second cold medium region 1015 that are not interconnected, the first cold medium region 1014 is connected to a cold medium inlet 104, and the second cold medium region 1015 is connected to a cold medium outlet 105; the second shell section 1010 has a feed space 1016; the feed port 106 is connected to the outer wall of the second shell section 1010 and is connected to the feed space 1016; the third shell section 1011 is provided with a hot medium inlet 102 and a hot medium outlet 103, and the heating area 101 is located on the third shell section 1011; the fourth shell section 1012 has a first discharge space The first discharge port 107 is located on the fourth shell section 1012 and communicates with the first discharge space 1017; the fifth shell section 1013 has a second discharge space 1018; the second discharge port 108 is located on the fourth shell section 1012 and communicates with the second discharge space 1018; wherein, the cooling pipe 3 includes a first cooling section 301, a second cooling section 302 and a U-shaped section 303, the U-shaped section 303 is located in the fifth shell section 1013, the first end of the first cooling section 301 communicates with the first cold medium region 1014, the second end of the second cooling section 302 communicates with the second cold medium region 1015; the second ends of the first cooling section 301 and the second ends of the second cooling section 302 both pass through the second shell section 1010, the third shell section 1011, the fourth shell section 1012 and the fifth shell section 1013 and are connected to the U-shaped section 303.
[0046] Here, the first housing segment 109, the second housing segment 1010, the third housing segment 1011, the fourth housing segment 1012 and the fifth housing segment 1013 are all coaxially arranged, and their respective cross-sectional diameters are all the same; the axial direction of the first cooling segment 301 and the axial direction of the second cooling segment 302 can be the same as the axial direction of the first housing segment 109.
[0047] It should be noted that the first cold medium zone 1014, the second cold medium zone 1015, the feeding space 1016, the heating zone 101, the first discharge space 1017, and the second discharge space 1018 are all enclosed spaces.
[0048] In this embodiment, by connecting the second end of the first cooling section 301 and the second end of the second cooling section 302 through the second shell section 1010, the third shell section 1011, the fourth shell section 1012, and the fifth shell section 1013 and then to the U-shaped section 303, the cold medium entering through the cold medium inlet 104 can sequentially enter the first cooling section 301, the U-shaped section 303, and the second cooling section 302 after entering the first cold medium region, until the cold medium can enter the second cold medium region 1015. During this process, the gas corresponding to the liquid material heated and vaporized by the hot medium in the distillation tube 2 located in the hot medium region 101 can be condensed. At the same time, the condensed liquid can also fall along the U-shaped section 303 located in the fifth shell section 1013 and enter the fifth shell section 1013 for easy collection.
[0049] Furthermore, a first partition 1019 is provided between the first housing section 109 and the second housing section 1010. The first end of the first cooling section 301 and the first end of the second cooling section 302 both pass through the first partition 1019 and are fixed on the first partition 1019.
[0050] Here, a temperature measuring port 1020 is also provided at the bottom of the first housing section 109. The temperature measuring port 1020 is equipped with a thermometer that can measure the temperature of the cold medium in the second cold medium region 1015.
[0051] In this embodiment, by passing the first end of the first cooling section 301 and the first end of the second cooling section 302 through the first partition 1019 and fixing them on the first partition 1019, not only is the communication between the first cooling section 301 and the first cold medium region 1014 and the communication between the second cooling section 302 and the second cold medium region 1015 realized, but the first cooling section 301 and the second cooling section 302 are also fixed in the distillation tank 1, thereby realizing the fixation of the entire cooling pipe 3 in the distillation tank 1.
[0052] Furthermore, a second partition 1021 is provided between the second shell section 1010 and the third shell section 1011, and a third partition 1022 is provided between the third shell section 1011 and the fourth shell section 1012. The first cooling section 301 and the second cooling section 302 both pass through the second partition 1021 and the third partition 1022. The distillation tube 2 includes a first distillation tube and a second distillation tube. The first distillation tube is sleeved on the outside of the first cooling section 301, and the second distillation tube is sleeved on the outside of the second cooling section 302. The first end of the first distillation tube and the first end of the second distillation tube both pass through the second partition 1021 and are fixed on the second partition 1021. The second end of the first distillation tube and the second end of the second distillation tube both pass through the third partition 1022 and are fixed on the third partition 1022, so that the first distillation tube and the second distillation tube are both connected to the feed space 1016 and the first discharge space 1017.
[0053] In this embodiment, by sleeved a first distillation tube outside the first cooling section 301 and a second distillation tube outside the second cooling section 302, and by passing the first end of both the first and second distillation tubes through and fixing them to the second partition 1021, and by passing the second end of both the first and second distillation tubes through and fixing them to the third partition 1022, the first and second distillation tubes are connected to the feed space 1016 and the first discharge space 1017, allowing the liquid material in the feed space 1016 to enter the first and second distillation tubes, thereby enabling the heat medium in the heating zone 101 to heat the liquid material located in the first and second distillation tubes; simultaneously, because the first distillation tube is sleeved outside the first cooling section 301 and the second distillation tube is sleeved outside the second cooling section 302, Therefore, when some liquid material in the first and second distillation tubes is heated and converted into gas, the first cooling section 301 and the second cooling section 302 located in the third shell section 1011 can condense the gas and form condensate on the outer walls of the first and second cooling sections 301 and 302. The condensate can fall downward along the outer walls of the first and second cooling sections 301 and 302, and flow into the first discharge space 1017 through the second end of the first and second distillation tubes. Meanwhile, the liquid material that has not been heated and converted into gas in the first and second distillation tubes can fall downward along the side wall of the first distillation tube away from the first cooling section 301 and the side wall of the second distillation tube away from the second cooling section 302. Thus, the arrangement of the first and second distillation tubes can perform liquid separation processing on the liquid material that has not been heated and converted into gas and the condensate.
[0054] Furthermore, the second end of the distillation tube 2 has a serrated structure.
[0055] In this embodiment, by designing the second end of the distillation tube 2 as a serrated structure, the liquid material inside the distillation tube 2 that has not been heated and converted into gas can fall down along the side wall of the distillation tube 2 away from the first cooling section 301 and accumulate on the serrated structure, so that this part of the liquid material falls down from the teeth on the serrated structure.
[0056] In some possible embodiments, the liquid separation assembly 4 includes a first cylindrical portion 401 and a second cylindrical portion 402. The first cylindrical portion 401 is sleeved on the outside of the first cooling section 301, and the second cylindrical portion 402 is sleeved on the outside of the second cooling section 302. The first end of the first cylindrical portion 401 and the first end of the second cylindrical portion 402 are both connected to the first discharge space 1017, and the second end of the first cylindrical portion 401 and the second end of the second cylindrical portion 402 are both connected to the second discharge space 1018.
[0057] Here, the cross-sectional diameters of both the first cylindrical section 401 and the second cylindrical section 402 are smaller than the cross-sectional diameter of the distillation tube 2.
[0058] In this embodiment, by sleeved the first cylindrical portion 401 on the outside of the first cooling section 301 and the second cylindrical portion 402 on the outside of the second cooling section 302, and by connecting the first end of the first cylindrical portion 401 and the first end of the second cylindrical portion 402 to the first discharge space 1017 and the second end of the first cylindrical portion 401 and the second end of the second cylindrical portion 402 to the second discharge space 1018, the first discharge space 1017 and the second discharge space 1018 can be connected. This allows the condensed liquid to flow from the first discharge space 1017 into the second discharge space 1018 along the outer walls of the first cooling section 301 and the second cooling section 302, thereby achieving the separation treatment of the liquid material that has not been heated and converted into gas and the condensed liquid.
[0059] Furthermore, a fourth partition 1023 is provided between the fourth housing section 1012 and the fifth housing section 1013; the first cylindrical section 401 and the second cylindrical section 402 are located in the first discharge space 1017, and the second end of the first cylindrical section 401 and the second end of the second cylindrical section 402 are both fixed on the fourth partition 1023.
[0060] Here, by placing the first cylinder 401 and the second cylinder 402 within the first discharge space 1017, and fixing the second end of the first cylinder 401 and the second end of the second cylinder 402 to the fourth partition 1023, the first cylinder 401 and the second cylinder 402 can be fixed within the distillation tank 1.
[0061] Furthermore, the first cylindrical section 401 and the first cooling section 301 are coaxially arranged, and the second cylindrical section 402 and the second cooling section 302 are coaxially arranged.
[0062] In this embodiment, by coaxially arranging the first cylinder 401 and the first cooling section 301, and coaxially arranging the second cylinder 402 and the second cooling section 302, contact between the first cylinder 401 and the first cooling section 301, and contact between the second cylinder 402 and the second cooling section 302, can be avoided, thereby ensuring that the condensed liquid can smoothly flow from the first discharge space 1017 into the second discharge space 1018 along the outer walls of the first cooling section 301 and the second cooling section 302.
[0063] Furthermore, the fourth housing section 1012 is provided with a vacuum port 1024, which is connected to the first discharge space 1017.
[0064] Here, by connecting the vacuum port 1024 to the first discharge space 1017, the vacuum can not only act in the first discharge space 1017 and the second discharge space 1018, but also in the distillation tube 2 and the feed space 1016. In particular, the vacuum acting in the distillation tube 2 can make the easily vaporized part of the liquid material more easily converted into gas under the action of vacuum.
[0065] In some possible embodiments, a distributor 5 is provided at one end of the distillation tube 2 near the feed inlet 106. The distributor 5 is used to add the liquid material entering through the feed inlet 106 into the distillation tube 2.
[0066] In this embodiment, by providing a distributor 5 at one end of the distillation tube 2 near the feed inlet 106, the liquid material entering through the feed inlet 106 can be evenly added into the distillation tube 2.
[0067] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0069] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0070] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A short-path distillation apparatus, characterized in that, include: A distillation tank has a heating zone; the outer wall of the distillation tank is provided with a hot medium inlet, a hot medium outlet, a cold medium inlet, a cold medium outlet, a feed inlet, a first discharge outlet, and a second discharge outlet; wherein, the hot medium inlet and the hot medium outlet are both connected to the heating zone; A distillation tube is located within the heating area, and the distillation tube is connected to the inlet, the first outlet, and the second outlet. A cooling pipe, at least a portion of which is located inside the distillation tube and coaxially arranged with the distillation tube; the cooling pipe is connected to both the cold medium inlet and the cold medium outlet; the cooling pipe is used to condense the gas corresponding to the liquid material heated and vaporized by the hot medium in the heating zone inside the distillation tube to obtain condensed liquid. The liquid separation assembly is disposed inside the distillation tank and located below the distillation tube. The liquid separation assembly is used to guide the liquid material that has not been heated and vaporized by the heat medium in the heating zone into the distillation tube to the first discharge port and to guide the condensed liquid to the second discharge port.
2. The short-path distillation apparatus according to claim 1, characterized in that, The distillation tank includes a first shell section, a second shell section, a third shell section, a fourth shell section, and a fifth shell section connected in sequence; The first housing segment has a first cold medium region and a second cold medium region that are not connected to each other. The first cold medium region is connected to the cold medium inlet, and the second cold medium region is connected to the cold medium outlet. The second housing section has a feeding space; the feeding port is connected to the outer wall of the second housing section and communicates with the feeding space; The third shell section is provided with the heat medium inlet and the heat medium outlet, and the heating area is located on the third shell section; The fourth housing section has a first discharge space; the first discharge port is located on the fourth housing section and communicates with the first discharge space. The fifth housing section has a second discharge space; the second discharge port is located on the fourth housing section and communicates with the second discharge space. The cooling pipe includes a first cooling section, a second cooling section, and a U-shaped section. The U-shaped section is located inside the fifth housing section. The first end of the first cooling section is connected to the first cold medium region, and the second end of the second cooling section is connected to the second cold medium region. The second ends of the first cooling section and the second cooling section both pass through the second housing section, the third housing section, the fourth housing section, and the fifth housing section before connecting to the U-shaped section.
3. The short-path distillation apparatus according to claim 2, characterized in that, A first partition is provided between the first housing segment and the second housing segment. The first end of the first cooling segment and the first end of the second cooling segment both pass through the first partition and are fixed to the first partition.
4. The short-path distillation apparatus according to claim 2, characterized in that, A second partition is provided between the second housing segment and the third housing segment, and a third partition is provided between the third housing segment and the fourth housing segment. Both the first cooling segment and the second cooling segment pass through the second partition and the third partition. The distillation tube includes a first distillation tube and a second distillation tube. The first distillation tube is sleeved on the outside of the first cooling section, and the second distillation tube is sleeved on the outside of the second cooling section. The first end of the first distillation tube and the first end of the second distillation tube both pass through the second partition and are fixed on the second partition. The second end of the first distillation tube and the second end of the second distillation tube both pass through the third partition and are fixed on the third partition, so that the first distillation tube and the second distillation tube are both connected to the feed space and the first discharge space.
5. The short-path distillation apparatus according to claim 4, characterized in that, The second end of the distillation tube has a serrated structure.
6. The short-path distillation apparatus according to claim 2, characterized in that, The liquid separation assembly includes a first cylindrical section and a second cylindrical section. The first cylindrical section is sleeved on the outside of the first cooling section, and the second cylindrical section is sleeved on the outside of the second cooling section. The first end of the first cylindrical section and the first end of the second cylindrical section are both connected to the first discharge space, and the second end of the first cylindrical section and the second end of the second cylindrical section are both connected to the second discharge space.
7. The short-path distillation apparatus according to claim 6, characterized in that, A fourth partition is provided between the fourth housing section and the fifth housing section; the first cylindrical section and the second cylindrical section are located within the first discharge space, and the second end of the first cylindrical section and the second end of the second cylindrical section are both fixed on the fourth partition.
8. The short-path distillation apparatus according to claim 6, characterized in that, The first cylindrical section and the first cooling section are coaxially arranged, and the second cylindrical section and the second cooling section are coaxially arranged.
9. The short-path distillation apparatus according to claim 6, characterized in that, The fourth housing section is provided with a vacuum port, which is connected to the first discharge space.
10. The short-path distillation apparatus according to any one of claims 1 to 9, characterized in that, A feeder is provided at one end of the distillation tube near the feed inlet, and the feeder is used to add the liquid material entering through the feed inlet into the distillation tube.