Distillation and purification device for polycyclic aromatic hydrocarbon production

Abstract

The invention relates to the field of distillation devices, and discloses a distillation and purification device for polycyclic aromatic hydrocarbon production, the distillation and purification device comprises a shell, one side of the shell is provided with a feeding assembly, raw materials are stored in the feeding assembly, the feeding assembly enters the shell from the lower end of one side of the shell, the feeding assembly is used for feeding, and the feeding assembly is used for feeding the raw materials; a feeding assembly is arranged in the shell, a distillation assembly is arranged in the middle of the interior of the shell, the distillation assembly can be used for distillation and can also assist in collection, a material collecting assembly is arranged on one side of the feeding assembly, and the material collecting assembly and the distillation assembly are matched to collect distilled finished products. The distillation and purification device for polycyclic aromatic hydrocarbon production is provided with the feeding assembly and the tray, raw materials are preheated by steam in the device before entering the tray, and the subsequent heating time is shortened; the tray is used for containing raw materials, and the raw materials are small in weight and large in heating area, so that compared with a traditional distillation device, preheating time can be shortened, and heating and distillation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of distillation devices, in particular to a distillation purification device for producing polycyclic aromatic hydrocarbons. Background Art

[0002] In the patent application with application announcement number 202320181078.2, it includes a device body, a heater, a stirring paddle, a distillation tube and a liquid storage tank, the heater is installed at the bottom of the device body, the stirring paddle is rotatably installed at the center position inside the device body, and the inside of the stirring paddle is installed with a heating wire, a rotating drive member is installed at the center position of the bottom of the device body, the output end of the rotating drive member is fixedly connected to the stirring paddle, a temperature sensor is installed on the inner wall of the top of the device body, and a barometer is installed on one side of the top of the device body, an air pump is installed on the top of the device body on one side of the barometer, and the output end of the air pump is connected to the device body, a liquid inlet pipe is installed on the side wall of the top of the device body, a control panel is installed on the outer wall on one side of the device body, the distillation tube is installed on the top of the device body on one side of the air pump, the liquid storage tank is arranged on one side of the device body, and a drain pipe is installed on the outer wall of the bottom of the liquid storage tank. The advantages are as follows: a heater, a rotary drive member, a stirring paddle, an electric heating wire, a temperature sensor, a barometer and an air pump are provided, the air pump is started to adjust the interior of the device body to a low pressure state, the barometer detects the air pressure inside the device body, the heater heats the garlic liquid, the rotary drive member drives the stirring paddle to rotate, the stirring paddle stirs the garlic liquid, the electric heating wire inside the stirring paddle provides heat to the garlic liquid, the heat transfer rate is accelerated, and the garlic liquid is heated evenly, the temperature sensor detects the temperature inside the device body, and the heating temperature is conveniently controlled. In this way, the garlic liquid is evaporated under low pressure conditions, the evaporation temperature can be controlled, and the thermal decomposition of allicin during the distillation process is prevented, thereby improving the purity of the allicin.

[0003] In the prior art including the above-mentioned patents, when distillation is carried out, a portion of the generated steam will remain on the inner wall of the device and condense into droplets before entering the condenser. At this time, the small droplets will either flow back into the original liquid and be distilled again, or remain on the inner wall. Such repeated distillation will not only slow down the efficiency of distillation purification, causing the device to be in a heating state for a long time, resulting in unnecessary waste of resources, but also reduce the output efficiency per unit time. In addition, ordinary distillation devices will add a sufficient amount of original liquid at one time and then heat it during distillation. Such operation requires a long time to preheat the original liquid, which is not convenient for further accelerating the production efficiency of the device. Summary of the invention

[0004] The problem to be solved by the present invention is that the distillation efficiency is low due to the long heating time before distillation.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a distillation and purification device for the production of polycyclic aromatic hydrocarbons, comprising a shell, a loading assembly is arranged on one side of the shell, raw materials are stored in the loading assembly, the loading assembly enters the shell from the lower end of one side of the shell, the loading assembly is used for feeding, a distillation assembly is arranged in the middle of the shell, the distillation assembly can be used for distillation and auxiliary collection, a collection assembly is arranged on one side of the loading assembly, the collection assembly cooperates with the distillation assembly to collect the finished products after distillation, and brackets are fixed on both sides of the distillation assembly.

[0006] Preferably, the feeding assembly includes a raw material tank, which is located below one side of the shell, a feeding pipe is fixedly provided on one side of the raw material tank, the other end of the feeding pipe passes through the lower end of the shell and enters the interior of the shell, and a branch pipe is fixedly provided on one side of the feeding pipe.

[0007] Preferably, the length of the feeding pipe and the number of the branch pipes are increased or decreased according to the size of the shell, and a sealing gasket is fixedly provided at the inner lower end of the branch pipe, and the sealing gasket is provided with two upper and lower ones, and a sealing gasket is provided between the sealing gaskets, and the sealing gasket is also provided with two upper and lower ones, and a connecting rod is fixedly provided between the sealing gaskets.

[0008] Preferably, the upper end of the connecting rod is hollow, and a limit rod is slidably provided in the middle of the connecting rod, and the upper end of the limit rod is fixedly connected to a sealing ring. A storage tube is provided on one side of the connecting rod, and the storage tube is fixedly connected to a feeding tube. A sliding rod is fixedly provided in the middle of the storage tube, and a piston plate is slidably provided on the outer surface of the sliding rod. The outer side of the piston plate is also slidably connected to the storage tube, and the end of the storage tube away from the branch tube is not closed.

[0009] Preferably, the distillation component includes a base, which is configured as an inverted square table, an electric heating tube is fixedly installed inside the upper end of the base, a tray is arranged above the electric heating tube, the center of the tray is located at the lower end of the branch pipe, a sleeve is fixedly installed at the middle lower end of the tray, an elastic component is arranged in the middle of the sleeve, and the upper end of the elastic component is fixedly connected to the tray.

[0010] Preferably, a mounting plate is provided at the lower end of the sleeve, and the mounting plate is fixedly connected to the base. A limiting column is fixedly provided at the middle part of the upper end of the mounting plate, and the upper end of the limiting column is fixedly connected to the elastic component. A mounting rod is slidably provided on the outer side of the limiting column, and the outer surface of the mounting rod is slidably connected to the sleeve. A spring 1 is provided inside the mounting rod around the limiting column, and the upper and lower ends of the spring 1 are fixedly connected to the mounting rod and the mounting plate respectively.

[0011] Preferably, a latch is slidably provided inside the upper end of the mounting rod, a sliding groove is opened on one side of the latch through a sleeve, the depth of the sliding groove gradually decreases from bottom to top, and a spring 2 is fixedly provided on a part of the lower end of the latch located inside the mounting rod, and the other end of the spring 2 is fixedly connected to the mounting rod.

[0012] Preferably, a connecting pipe is fixedly provided at the lower end of the mounting plate just below the mounting rod, a collecting plate is fixedly provided at the lower end of the connecting pipe, a sealing block is slidably provided around the connecting pipe, and the upper end of the sealing block passes through the mounting plate and is fixedly connected to the mounting rod. The number of the distillation components corresponds to the number of the branch pipes, and only the collecting plate located at the bottom of the distillation components is provided with through holes around it.

[0013] Preferably, the aggregate assembly includes a finished product tank, a suction device is arranged inside the finished product tank, a collecting pipe is fixedly arranged at one end of the finished product tank, the other end of the collecting pipe passes through the lower end of the shell and enters the interior of the shell, the collecting pipe is located on the other side of the feeding pipe, and the collecting pipe passes through the base and is connected to the connecting pipe.

[0014] Preferably, a bracket is fixedly provided at both ends of the base, the bracket is inclined, the other end of the bracket is fixedly connected to the shell, the cross-section of the bracket is an inverted trapezoidal setting, the two sides of the lower end of the bracket are circular, and guide grooves are opened on both sides of the lower end of the bracket, and the guide grooves are set as a trapezoidal shape that is narrow on the outside and wide on the inside.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The special setting of the feeding component and the tray is adopted. The raw materials will be preheated by the steam in the device before entering the tray, so that they are raised to the appropriate temperature before processing. This can reduce the heating time required for the raw materials after entering the tray. In addition, low-pressure distillation is often used when distilling polycyclic aromatic hydrocarbons. The setting of the storage pipe and the piston plate can balance the pressure in advance when loading the materials, reducing the pressure change caused by the raw materials entering the tray. It is worth noting that the tray is used to hold the raw materials. During each distillation, because the raw materials in a single tray are smaller in weight and the heating area is larger, compared with the traditional distillation device, this device can shorten the time for preheating the raw materials, improve the heating efficiency of the device, and thus speed up the distillation. The power required by the heating device is also less than that of the traditional distillation equipment; (2) Through the arrangement of the base, the collecting plate, the collecting assembly and the bracket, a part of the finished products that have condensed in advance in the device can be guided and collected, so that most of the finished products can be collected to avoid re-entering the raw materials, thereby saving distillation time and avoiding unnecessary waste of time, and also improving the efficiency and output of finished product collection per unit time; (3) The arrangement of the sleeve, elastic component, mounting plate, and other components within the distillation component allows the tray to cooperate with the feeding component to replenish raw materials after distillation is completed, and also allows the collection component to collect the finished products while preventing large fluctuations in the pressure inside the device. It can also prevent the tray from replenishing raw materials in advance before the raw materials are completely evaporated, thereby providing a guarantee for the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the present invention; Figure 3 It is a schematic diagram of the internal structure of the distillation device of the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of the feeding assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the connecting rod of the present invention; Figure 6 This is a schematic diagram of the structure of the distillation assembly of the present invention; Figure 7 It is a schematic diagram of a partial cross-sectional structure of the base of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the base of the present invention; Fig. 9 It is a schematic diagram of a partial cross-sectional structure of the mounting rod of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram at A in the middle; Fig.11 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention; Fig.12 For the present invention Fig.11 The enlarged structural diagram at B in the middle; Fig.13 It is a schematic diagram of the three-dimensional structure of the limiting column of the present invention; Fig.14 It is a schematic diagram of the three-dimensional structure of the bracket of the present invention.

[0017] In the figure: 1. Shell; 2. Feeding assembly; 201. Raw material tank; 202. Feeding pipe; 203. Branch pipe; 204. Sealing ring; 205. Sealing pad; 206. Connecting rod; 207. Limiting rod; 208. Storage pipe; 209. Sliding rod; 210. Piston plate; 3. Distillation assembly; 301. Base; 302. Electric heating tube; 303. Tray; 304. Sleeve; 305. Elastic assembly; 306. Mounting plate; 307. Mounting rod; 308. Limiting column; 309. Spring 1; 310. Latch; 311. Slide; 312. Spring 2; 313. Connecting pipe; 314. Collecting tray; 315. Sealing block; 4. Aggregate assembly; 401. Finished product tank; 402. Collecting pipe; 5. Bracket; 6. Guide groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 14 As shown, a distillation purification device for the production of polycyclic aromatic hydrocarbons provided by the present invention comprises a shell 1, a feeding assembly 2 is arranged on one side of the shell 1, raw materials are stored in the feeding assembly 2, the feeding assembly 2 enters the shell 1 from the lower end of one side of the shell 1, the feeding assembly 2 is used for feeding, a distillation assembly 3 is arranged in the middle of the shell 1, the distillation assembly 3 can be used for distillation and auxiliary collection, a collection assembly 4 is arranged on one side of the feeding assembly 2, the collection assembly 4 cooperates with the distillation assembly 3 to collect the finished product after distillation, and brackets 5 are fixedly arranged on both sides of the distillation assembly 3.

[0021] The feeding assembly 2 includes a raw material tank 201, which is located below one side of the shell 1. A feeding pipe 202 is fixedly provided on one side of the raw material tank 201. The other end of the feeding pipe 202 passes through the lower end of the shell 1 and enters the interior of the shell 1. A branch pipe 203 is fixedly provided on one side of the feeding pipe 202.

[0022] The length of the feeding pipe 202 and the number of branch pipes 203 are increased or decreased according to the size of the shell 1. A sealing gasket 205 is fixedly provided at the lower end of the inner part of the branch pipe 203. The sealing gasket 205 is provided with two upper and lower ones. A sealing gasket 205 is provided between the sealing gaskets 205. The sealing gasket 205 is also provided with two upper and lower ones. A connecting rod 206 is fixedly provided between the sealing gaskets 205.

[0023] The upper end of the connecting rod 206 is hollow, and a limit rod 207 is slidably provided in the middle of the connecting rod 206. The upper end of the limit rod 207 is fixedly connected to the sealing ring 204. A storage tube 208 is provided on one side of the connecting rod 206. The storage tube 208 is fixedly connected to the feeding tube 202. A slide rod 209 is fixedly provided in the middle of the storage tube 208. A piston plate 210 is slidably provided on the outer surface of the slide rod 209. The outer side of the piston plate 210 is also slidably connected to the storage tube 208. The end of the storage tube 208 away from the branch tube 203 is not closed.

[0024] The distillation component 3 includes a base 301, which is configured as an inverted square platform. An electric heating tube 302 is fixedly installed inside the upper end of the base 301, and a tray 303 is arranged above the electric heating tube 302. The center of the tray 303 is located at the lower end of the branch pipe 203. A sleeve 304 is fixedly installed at the middle lower end of the tray 303, and an elastic component 305 is arranged in the middle of the sleeve 304. The upper end of the elastic component 305 is fixedly connected to the tray 303.

[0025] A mounting plate 306 is provided at the lower end of the sleeve 304, and the mounting plate 306 is fixedly connected to the base 301. A limiting column 308 is fixedly provided in the middle of the upper end of the mounting plate 306, and the upper end of the limiting column 308 is fixedly connected to the elastic component 305. A mounting rod 307 is slidably provided on the outer side of the limiting column 308, and the outer surface of the mounting rod 307 is slidably connected to the sleeve 304. A spring 309 is provided inside the mounting rod 307 around the limiting column 308, and the upper and lower ends of the spring 309 are fixedly connected to the mounting rod 307 and the mounting plate 306 respectively.

[0026] A latch 310 is slidably provided inside the upper end of the mounting rod 307, a sliding groove 311 is opened on one side of the latch 310 through the sleeve 304, the depth of the sliding groove 311 gradually decreases from bottom to top, and a spring 2 312 is fixedly provided on a part of the lower end of the latch 310 located inside the mounting rod 307, and the other end of the spring 2 312 is fixedly connected to the mounting rod 307.

[0027] The lower end of the mounting plate 306 is located just below the mounting rod 307 and a connecting pipe 313 is fixedly installed. The lower end of the connecting pipe 313 is fixedly installed with a collecting plate 314. A sealing block 315 is slidably installed around the connecting pipe 313. The upper end of the sealing block 315 passes through the mounting plate 306 and is fixedly connected to the mounting rod 307. The number of distillation components 3 corresponds to the number of branch pipes 203. Only the collecting plate 314 located at the bottom of the distillation component 3 is provided with through holes around it.

[0028] The collection assembly 4 includes a finished product tank 401, and a suction device is arranged inside the finished product tank 401. A collecting pipe 402 is fixedly arranged at one end of the finished product tank 401. The other end of the collecting pipe 402 passes through the lower end of the shell 1 and enters the inside of the shell 1. The collecting pipe 402 is located on the other side of the feeding pipe 202. The collecting pipe 402 passes through the base 301 and is connected to the connecting pipe 313.

[0029] A bracket 5 is fixedly installed at both ends of the base 301, and the bracket 5 is set at an angle. The other end of the bracket 5 is fixedly connected to the shell 1. The cross-section of the bracket 5 is an inverted trapezoidal setting. The two sides of the lower end of the bracket 5 are set to be circular. Guide grooves 6 are opened on both sides of the lower end of the bracket 5. The guide grooves 6 are set to be a trapezoidal shape that is narrow on the outside and wide on the inside.

[0030] Working principle and use process of the present invention: The device has three working processes: loading, heating and collecting; There are two situations when loading materials: The first loading before work starts: The tray 303 is continuously pressed against the lower end of the branch pipe 203 by the elastic component 305, pushing the sealing gasket 205 upward. When loading begins, the stock liquid will press the sealing gasket 205 downward, temporarily closing the lower end of the branch pipe 203, and enter the storage pipe 208 at the same time. When the storage pipe 208 is filled with stock liquid and the pressure in the pipe is balanced, the tray 303 will push the sealing gasket 205 open again, allowing the stock liquid in the storage pipe 208 to enter the tray 303, and then the sealing gasket 205 will be pressed down by the stock liquid, and the tray 303 will move downward under the action of gravity. At this time, the stock liquid in the tray 303 is heated, and the storage pipe 208 is re-injected with the stock liquid.

[0031] Replenishment of raw materials during operation: When the tray 303 pushes open the sealing pad 205, the stock solution in the storage tube 208 directly enters the tray 303, because the storage tube 208 has stored the raw materials after the first loading, so the stock solution does not need to enter the storage tube 208 first and then enter the tray 303; During the process of replenishing raw materials, the height of the tray 303 will move upward as the raw materials decrease, which is specifically divided into the following three stages: When half of the raw material is left: the elastic component 305 will lift the tray 303, which can push the tray 303 to three-quarters of the total stroke, and when half of the raw material is left, the tray 303 can only be pushed to the half position; at this time, under the joint action of the slide groove 311 and the second spring 312, the latch 310 slides outward from the middle of the limit column 308. It should be noted that the latch 310 cannot completely escape from the range of the limit column 308; because the elastic component 305 has not reached the highest point, the second spring 312 cannot push the latch 310 to move completely outward, and this mechanism can prevent the installation rod 307 from rising prematurely, avoiding the situation where the tray 303 moves up prematurely before the raw material is completely evaporated, resulting in premature replenishment of the raw material; When all the raw materials are evaporated: the elastic component 305 moves to the top, and the latch 310 is at the bottom of the slide slot 311; at this time, the spring in the elastic component 305 has reached the maximum stroke and cannot continue to exert force upward, and the force of the second spring 312 is sufficient to completely push the latch 310 out and bear the weight of the tray 303 and the sleeve 304; at this time, the latch 310 cooperates with the slide slot 311 under the action of the second spring 312, and the sleeve 304 can be stuck, and the latch 310 completely leaves the limit column 308; then the spring 1 309 will push the mounting rod 307 and the sleeve 304 upward, so that the tray 303 pushes the sealing pad 205 upward, thereby starting to replenish the raw materials; After the raw material is replenished, it will first move downward to the bottom dead point. At this time, the second spring 312 cannot support the weight above, so the latch 310 moves inward, and the sleeve 304 has not yet contacted the bottom dead point, so it will continue to move downward. At this time, the latch 310 gradually enters the limit column 308 under the action of the slide groove 311 until the sleeve 304 stops moving; During the heating process, the electric heating tube 302 can directly heat the tray 303, and the steam generated by the stock solution can also preheat the raw materials in the storage tube 208; it should be noted that the evaporated steam will adhere to and condense on the inner wall of the shell 1, the outer wall of the base 301 and other places. As the number of condensed finished products in the device increases, the finished products attached to the inner wall of the shell 1 enter the collection tray 314 at the lower end or flow to the outer wall of the base 301 under the action of the bracket 5 and the guide groove 6 on its surface, and drip into the corresponding collection tray 314 together with the finished products on the outer wall of the base 301 until the raw materials on the corresponding tray 303 are completely evaporated and the raw materials are replenished. At this time, the sealing block 315 will move up with the upward movement of the mounting rod 307, exposing the through hole under the connecting pipe 313. At this time, the finished products condensed in advance can enter the collection pipe 402 through the connecting pipe 313 and finally enter the finished product tank 401.

[0032] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A distillation purification device for producing polycyclic aromatic hydrocarbons, comprising a housing (1), characterized in that: A loading component (2) is arranged on one side of the shell (1), and raw materials are stored in the loading component (2). The loading component (2) enters the shell (1) from the lower end of one side of the shell (1), and the loading component (2) is used for feeding materials. A distillation component (3) is arranged in the middle of the shell (1), and the distillation component (3) can be used for distillation and can also assist in collection. A collection component (4) is arranged on one side of the loading component (2), and the collection component (4) cooperates with the distillation component (3) to collect finished products after distillation. Brackets (5) are fixedly arranged on both sides of the distillation component (3).

2. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The feeding assembly (2) comprises a raw material tank (201), wherein the raw material tank (201) is located below one side of the shell (1), a feeding pipe (202) is fixedly provided on one side of the raw material tank (201), the other end of the feeding pipe (202) passes through the lower end of the shell (1) and enters the interior of the shell (1), and a branch pipe (203) is fixedly provided on one side of the feeding pipe (202).

3. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 2, characterized in that: The length of the feeding tube (202) and the number of the branch tubes (203) are increased or decreased according to the size of the shell (1); a sealing gasket (205) is fixedly provided at the lower end of the inner part of the branch tube (203); two sealing gaskets (205) are provided, one above the other; a sealing gasket (205) is provided between the sealing gaskets (205); two sealing gaskets (205) are also provided, one above the other; a connecting rod (206) is fixedly provided between the sealing gaskets (205).

4. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 3, characterized in that: The upper end of the connecting rod (206) is hollow, and a limiting rod (207) is slidably provided in the middle of the connecting rod (206). The upper end of the limiting rod (207) is fixedly connected to the sealing ring (204). A material storage tube (208) is provided on one side of the connecting rod (206). The material storage tube (208) is fixedly connected to the feeding tube (202). A sliding rod (209) is fixedly provided in the middle of the material storage tube (208). A piston plate (210) is slidably provided on the outer surface of the sliding rod (209). The outer side of the piston plate (210) is also slidably connected to the material storage tube (208). The end of the material storage tube (208) away from the branch tube (203) is not closed.

5. The distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The distillation component (3) comprises a base (301), wherein the base (301) is configured as an inverted square platform, an electric heating tube (302) is fixedly arranged inside the upper end of the base (301), a tray (303) is arranged above the electric heating tube (302), the center of the tray (303) is located at the lower end of the branch pipe (203), a sleeve (304) is fixedly arranged at the middle lower end of the tray (303), an elastic component (305) is arranged in the middle of the sleeve (304), and the upper end of the elastic component (305) is fixedly connected to the tray (303).

6. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 5, characterized in that: A mounting plate (306) is provided at the lower end of the sleeve (304), the mounting plate (306) is fixedly connected to the base (301), a limiting column (308) is fixedly provided in the middle of the upper end of the mounting plate (306), the upper end of the limiting column (308) is fixedly connected to the elastic component (305), a mounting rod (307) is slidably provided on the outer side of the limiting column (308), the outer surface of the mounting rod (307) is slidably connected to the sleeve (304), a spring 1 (309) is provided inside the mounting rod (307) and around the limiting column (308), and the upper and lower ends of the spring 1 (309) are respectively fixedly connected to the mounting rod (307) and the mounting plate (306).

7. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 6, characterized in that: A latch (310) is slidably disposed inside the upper end of the mounting rod (307), a sliding groove (311) is opened on one side of the latch (310) through the sleeve (304), and the depth of the sliding groove (311) gradually decreases from bottom to top. A second spring (312) is fixedly disposed at a part of the lower end of the latch (310) located inside the mounting rod (307), and the other end of the second spring (312) is fixedly connected to the mounting rod (307).

8. A distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 7, characterized in that: A connecting pipe (313) is fixedly arranged at the lower end of the mounting plate (306) directly below the mounting rod (307), a collecting plate (314) is fixedly arranged at the lower end of the connecting pipe (313), a sealing block (315) is slidably arranged around the connecting pipe (313), and the upper end of the sealing block (315) passes through the mounting plate (306) and is fixedly connected to the mounting rod (307). The number of the distillation components (3) corresponds to the number of the branch pipes (203), and only the collecting plate (314) located at the bottom of the distillation components (3) is provided with through holes around its periphery.

9. The distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The material collection assembly (4) comprises a finished product tank (401), wherein a material suction device is arranged inside the finished product tank (401), a collecting pipe (402) is fixedly arranged at one end of the finished product tank (401), and the other end of the collecting pipe (402) passes through the lower end of the shell (1) and enters the inside of the shell (1), and the collecting pipe (402) is located on the other side of the feeding pipe (202), and the collecting pipe (402) passes through the base (301) and is connected to the connecting pipe (313).

10. The distillation purification device for producing polycyclic aromatic hydrocarbons according to claim 5, characterized in that: A bracket (5) is fixedly provided at both ends of the base (301), the bracket (5) is arranged obliquely, the other end of the bracket (5) is fixedly connected to the housing (1), the cross section of the bracket (5) is arranged in an inverted trapezoidal shape, the two sides of the lower end of the bracket (5) are arranged in a circular shape, the two sides of the lower end of the bracket (5) are provided with a guide groove (6), and the guide groove (6) is arranged in a trapezoidal shape that is narrow outside and wide inside.

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