A distillation and purification device for the production of polycyclic aromatic hydrocarbons

Abstract

The present invention relates to the field of distillation devices, and discloses a distillation and purification device for the production of polycyclic aromatic hydrocarbons, including a housing. One side of the housing is provided with a feeding assembly, in which raw materials are stored. The feeding assembly enters the interior of the housing from the lower end of one side of the housing. The feeding assembly is used for feeding. A distillation assembly is arranged in the middle of the interior of the housing. The distillation assembly can be used for distillation and can also assist in collection. One side of the feeding assembly is provided with an aggregate assembly. The aggregate assembly cooperates with the distillation assembly to collect the finished products after distillation. The distillation and purification device for the production of polycyclic aromatic hydrocarbons provided by the present invention has a feeding assembly and a tray. Before the raw materials enter the tray, they are preheated by the steam in the device, reducing the subsequent heating time. The raw materials are placed in the tray. Due to the small amount of raw materials and the large heating area, compared with the traditional distillation device, the preheating time can be shortened, and the heating and distillation efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of distillation devices, and specifically to a distillation and purification device for the production of polycyclic aromatic hydrocarbons. Background Art

[0002] In the patent application with the application publication number CN219848219U, it includes a device main body, a heater, a stirring paddle, a distillation pipe and a liquid storage tank. The heater is installed at the bottom of the device main body. The stirring paddle is rotatably installed at the central position inside the device main body, and electric heating wires are installed inside the stirring paddle. A rotary drive is installed at the central position of the bottom of the device main body, and the output end of the rotary drive is fixedly connected to the stirring paddle. A temperature sensor is installed on the inner wall of the top of the device main body, and a pressure gauge is installed on one side of the top of the device main body. An air pump is installed on the top of the device main body on one side of the pressure gauge, and the output end of the air pump is communicated with the device main body. A liquid inlet pipe is installed on the side wall of the top of the device main body. A control panel is installed on the outer wall of one side of the device main body. The distillation pipe is installed at the top of the device main body on one side of the air pump. The liquid storage tank is arranged on one side of the device main body, and a liquid discharge pipe is installed on the outer wall of the bottom of the liquid storage tank. The advantages are as follows: By setting up a heater, a rotary drive, a stirring paddle, electric heating wires, a temperature sensor, a pressure gauge, and an air pump, the air pump is started to adjust the inside of the device main body to a low-pressure state. The pressure gauge detects the pressure inside the device main body. The heater heats the garlic liquid. The rotary drive drives the stirring paddle to rotate. The stirring paddle stirs the garlic liquid. The electric heating wires inside the stirring paddle provide heat to the garlic liquid, accelerating the heat transfer rate and making the garlic liquid evenly heated. The temperature sensor detects the temperature inside the device main body, facilitating the control of the heating temperature. This method enables the garlic liquid to be distilled under low-pressure conditions, can control the distillation temperature, and prevent allicin from being decomposed by heat during the distillation process, thereby improving the purity of allicin.

[0003] In the prior art including the above-mentioned patent, during distillation, before the generated steam enters the condenser tube, a part of the steam will remain on the inner wall of the device and condense into droplets. At this time, these small droplets either flow back into the original liquid and are distilled again, or remain on the inner wall. Such repeated distillation will not only slow down the distillation and purification efficiency, keep the device in a heating state for a long time, causing unnecessary waste of resources, but also reduce the output efficiency per unit time. And in the ordinary distillation device during distillation, a sufficient amount of the original liquid is added at one time and then heated, and such an operation requires a long time to preheat the original liquid, thus making it inconvenient to further improve the production efficiency of the device. Summary of the Invention

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

[0005] 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, including a housing. One side of the housing is provided with a feeding assembly, in which raw materials are stored. The feeding assembly enters the interior of the housing from the lower end of one side of the housing, and the feeding assembly is used for feeding. In the middle of the interior of the housing is provided a distillation assembly, which can be used for distillation and also assist in collection. One side of the feeding assembly is provided with an aggregate assembly, and the aggregate assembly cooperates with the distillation assembly to collect the finished products after distillation. On both sides of the distillation assembly are fixedly provided brackets. The distillation assembly includes a base, the base is set as an inverted square platform, and an electric heating tube is fixedly arranged inside the upper end of the base. Above the electric heating tube is provided a tray, the center of the tray is located at the lower end of the branch pipe. At the lower end of the middle part of the tray is fixedly provided a sleeve, and an elastic assembly is arranged in the middle of the interior of the sleeve. The upper end of the elastic assembly is fixedly connected to the tray. The lower end of the sleeve is provided with a mounting plate, the mounting plate is fixedly connected to the base, and in the middle of the upper end of the mounting plate is fixedly provided a limit post, the upper end of the limit post is fixedly connected to the elastic assembly. An installation rod is slidably arranged on the outside of the limit post, the outer surface of the installation rod is slidably connected to the sleeve, and a first spring is arranged around the limit post inside the installation rod, and the upper and lower ends of the first spring are respectively fixedly connected to the installation rod and the mounting plate.

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

[0007] Preferably, the length of the feeding pipe and the number of branch pipes are increased or decreased according to the size of the housing. At the lower end inside the branch pipe is fixedly provided a sealing ring, and there are two sealing rings, upper and lower. Between the sealing rings is provided a sealing gasket, and there are also two sealing gaskets, upper and lower. A connecting rod is fixedly arranged between the sealing gaskets.

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

[0009] Preferably, a bolt is slidably arranged inside the upper end of the mounting rod. A chute is formed on one side of the bolt through a sleeve. The depth of the chute gradually decreases from bottom to top. A part of the lower end of the bolt located inside the mounting rod is fixedly provided with a second spring, and the other end of the second spring is fixedly connected to the mounting rod.

[0010] Preferably, a connecting pipe is fixedly arranged directly below the mounting rod at the lower end of the mounting plate. A collecting tray is fixedly arranged at the lower end of the connecting pipe. A sealing block is slidably arranged around the connecting pipe. The upper end of the sealing block passes through the mounting plate and is fixedly connected to the mounting rod. The number of distillation components corresponds to the number of branch pipes. Only the collecting tray at the bottommost of the distillation components is provided with through holes around it.

[0011] Preferably, the aggregate component includes a finished product tank. A material suction device is arranged inside the finished product tank. One end of the finished product tank is fixedly provided with a collecting pipe. The other end of the collecting pipe passes through the lower end of the housing and enters the housing interior. The collecting pipe is located on the other side of the feeding pipe. The collecting pipe passes through the base and is connected to the connecting pipe.

[0012] Preferably, brackets are fixedly arranged at both ends of the base. The brackets are inclined. The other end of the brackets is fixedly connected to the housing. The cross-section of the brackets is in an inverted trapezoidal shape. The two sides at the lower end of the brackets are circular. Flow guiding grooves are formed on both sides at the lower end of the brackets. The flow guiding grooves are in a trapezoidal shape with a narrow outer part and a wide inner part.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0014] (1) By adopting the special settings of the feeding component and the tray, the raw materials will be preheated by the steam in the device before entering the tray, so that they can be raised to a suitable temperature before processing. This can reduce the heating time required after the raw materials enter the tray. Moreover, when distilling polycyclic aromatic hydrocarbons, the low-pressure distillation method is mostly used. By using the settings of the storage pipe and the piston plate, the pressure can be balanced in advance during feeding, reducing the pressure change caused by the raw materials entering the tray. And it is worth noting that by using the tray to hold the raw materials, in each distillation, because the amount of raw materials in a single tray is small and the heating area is large, 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 can accelerate the distillation speed. And the power required by the heating device is also less than that of the traditional distillation equipment.

[0015] (2) Through the settings of the base, collection tray, aggregate component and bracket, the partially pre-solidified finished products in the device can be guided and collected, so that most of the finished products can be collected, avoiding re-entry into the raw materials, thus saving the distillation time, avoiding unnecessary time waste, and also improving the efficiency and output of finished product collection per unit time;

[0016] (3) The settings of components such as the sleeve, elastic component, mounting plate, etc. in the distillation component can enable the tray to cooperate with the feeding component to supplement raw materials after distillation is completed. Also, while the aggregate component collects the finished products, it can prevent large fluctuations in the pressure inside the device, and can also prevent the tray from supplementing raw materials prematurely before the raw materials are completely evaporated. This can provide guarantee for the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic perspective view of the overall structure of the present invention;

[0018] Figure 2 is a schematic cross-sectional view of the housing of the present invention;

[0019] Figure 3 is a schematic view of the internal structure of the distillation device of the present invention;

[0020] Figure 4 is a schematic partial cross-sectional view of the feeding component of the present invention;

[0021] Figure 5 is a schematic cross-sectional view of the connecting rod of the present invention;

[0022] Figure 6 is a schematic view of the distillation component of the present invention;

[0023] Figure 7 is a schematic partial cross-sectional view of the base of the present invention;

[0024] Figure 8 is a schematic cross-sectional view of the base of the present invention;

[0025] Figure 9 is a schematic partial cross-sectional view of the mounting rod of the present invention;

[0026] Figure 10 is of the present invention Figure 9 enlarged schematic view at A;

[0027] Figure 11 is a schematic cross-sectional view of the connecting pipe of the present invention;

[0028] Figure 12 is of the present invention Figure 11 enlarged schematic view at B;

[0029] Figure 13Schematic three-dimensional structure diagram of the limit post of the present invention;

[0030] Figure 14 Schematic three-dimensional structure diagram of the bracket of the present invention.

[0031] In the figure: 1, housing; 2, feeding assembly; 201, raw material tank; 202, feeding pipe; 203, branch pipe; 204, sealing ring; 205, sealing gasket; 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, limit post; 309, first spring; 310, bolt; 311, chute; 312, second spring; 313, connecting pipe; 314, collection tray; 315, sealing block; 4, aggregate assembly; 401, finished product tank; 402, collection pipe; 5, bracket; 6, diversion groove. Specific embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "including" or "comprising" and the like used in the present disclosure mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] Such as Figures 1 to 14As shown in the figure, a distillation and purification device for the production of polycyclic aromatic hydrocarbons provided by the present invention includes a housing 1. A feeding assembly 2 is arranged on one side of the housing 1, and raw materials are stored in the feeding assembly 2. The feeding assembly 2 enters the interior of the housing 1 from the lower end on one side of the housing 1. The feeding assembly 2 is used for feeding. A distillation assembly 3 is arranged in the middle of the interior of the housing 1. The distillation assembly 3 can be used for distillation and can also assist in collection. An aggregate assembly 4 is arranged on one side of the feeding assembly 2. The aggregate assembly 4 cooperates with the distillation assembly 3 to collect the finished products after distillation. Brackets 5 are fixedly arranged on both sides of the distillation assembly 3. The distillation assembly 3 includes a base 301. The base 301 is set 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 lower middle part of the tray 303. An elastic assembly 305 is arranged in the middle of the interior of the sleeve 304. The upper end of the elastic assembly 305 is fixedly connected to the tray 303. The lower end of the sleeve 304 is provided with a mounting plate 306. The mounting plate 306 is fixedly connected to the base 301. A limiting post 308 is fixedly arranged in the middle of the upper end of the mounting plate 306. The upper end of the limiting post 308 is fixedly connected to the elastic assembly 305. A mounting rod 307 is slidably arranged on the outside of the limiting post 308. The outer surface of the mounting rod 307 is slidably connected to the sleeve 304. A first spring 309 is arranged around the limiting post 308 inside the mounting rod 307. The upper and lower ends of the first spring 309 are respectively fixedly connected to the mounting rod 307 and the mounting plate 306.

[0035] The feeding assembly 2 includes a raw material tank 201. The raw material tank 201 is located below one side of the housing 1. A feeding pipe 202 is fixedly arranged on one side of the raw material tank 201. The other end of the feeding pipe 202 passes through the lower end of the housing 1 and enters the interior of the housing 1. A branch pipe 203 is fixedly arranged on one side of the feeding pipe 202.

[0036] The length of the feeding pipe 202 and the number of the branch pipes 203 are increased or decreased according to the size of the housing 1. Sealing rings 204 are fixedly arranged at the lower end inside the branch pipe 203. There are two upper and lower sealing rings 204. A sealing gasket 205 is arranged between the sealing rings 204. There are also two upper and lower sealing gaskets 205. A connecting rod 206 is fixedly arranged between the sealing gaskets 205.

[0037] The upper end of the connecting rod 206 is hollow. A limiting rod 207 is slidably arranged 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 storage pipe 208 is arranged on one side of the connecting rod 206. The storage pipe 208 is fixedly connected to the feeding pipe 202. A sliding rod 209 is fixedly arranged in the middle of the interior of the storage pipe 208. A piston plate 210 is slidably arranged on the outer surface of the sliding rod 209. The outer side of the piston plate 210 is simultaneously slidably connected to the storage pipe 208. The end of the storage pipe 208 away from the branch pipe 203 is not closed.

[0038] A pin 310 is slidably arranged inside the upper end of the mounting rod 307. A chute 311 is provided on one side of the pin 310 through a sleeve 304. The depth of the chute 311 gradually decreases from bottom to top. A part of the lower end of the pin 310 located inside the mounting rod 307 is fixedly provided with a second spring 312, and the other end of the second spring 312 is fixedly connected to the mounting rod 307.

[0039] A connecting pipe 313 is fixedly arranged directly below the mounting rod 307 at the lower end of the mounting plate 306. A collecting tray 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. 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 assemblies 3 corresponds to the number of branch pipes 203. Only the collecting tray 314 at the bottommost of the distillation assemblies 3 is provided with through holes around it.

[0040] The aggregate component 4 includes a finished product tank 401. A material suction device is arranged inside the finished product tank 401. One end of the finished product tank 401 is fixedly provided with a collecting pipe 402. The other end of the collecting pipe 402 passes through the lower end of the housing 1 and enters the inside of the housing 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.

[0041] Both ends of the base 301 are fixedly provided with brackets 5. The brackets 5 are inclined. The other end of the brackets 5 is fixedly connected to the housing 1. The cross-section of the brackets 5 is an inverted trapezoid. The two sides of the lower end of the brackets 5 are circular. Flow guiding grooves 6 are provided on both sides of the lower end of the brackets 5. The flow guiding grooves 6 are trapezoids with a narrow outer side and a wide inner side.

[0042] The working principle and usage process of the present invention: The device has three working processes: feeding, heating, and collecting;

[0043] During feeding, there are two situations: The first feeding before the start of work: The tray 303 continuously abuts against the lower end of the branch pipe 203 under the action of the elastic component 305, pushing the sealing gasket 205 upward. When feeding starts, the stock solution will press down the sealing gasket 205, temporarily closing the lower end of the branch pipe 203, and at the same time entering the storage pipe 208. When the storage pipe 208 is filled with the stock solution and the pressure in the pipeline is balanced, the tray 303 will push open the sealing gasket 205 again, allowing the stock solution in the storage pipe 208 to enter the tray 303. Subsequently, the sealing gasket 205 will be pressed down by the stock solution, and the tray 303 will move downward under the action of gravity. At this time, the stock solution in the tray 303 is heated, and the storage pipe 208 is refilled with the stock solution.

[0044] 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;

[0045] 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:

[0046] 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;

[0047] 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;

[0048] 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;

[0049] 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 pipe 208; it should be noted that the evaporated steam will adhere and condense on the inner wall of the housing 1, the outer wall of the base 301, etc. As the number of finished products condensed in the device increases, the finished products adhering to the inner wall of the housing 1 enter the lowermost collection tray 314 respectively or flow to the outer wall of the base 301 under the action of the bracket 5 and the flow 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 raw materials need to be replenished. At this time, the sealing block 315 will move up with the upward movement of the mounting rod 307, exposing the through hole below the connecting pipe 313. At this time, the pre-condensed finished products can enter the collection pipe 402 through the connecting pipe 313 and finally enter the finished product tank 401.

[0050] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A distillation and purification device for the production of polycyclic aromatic hydrocarbons, comprising a housing (1), characterized in that: On one side of the housing (1), a feeding component (2) is provided. Raw materials are stored in the feeding component (2). The feeding component (2) enters the interior of the housing (1) from the lower end on one side of the housing (1). The feeding component (2) is used for feeding. In the middle of the interior of the housing (1), a distillation component (3) is provided. The distillation component (3) can be used for distillation and can also assist in collection. On one side of the feeding component (2), an aggregate component (4) is provided. The aggregate component (4) cooperates with the distillation component (3) to collect the finished products after distillation. On both sides of the distillation component (3), brackets (5) are fixedly provided. The distillation component (3) includes a base (301). The base (301) is arranged as an inverted square platform. Inside the upper end of the base (301), an electric heating tube (302) is fixedly provided. Above the electric heating tube (302), a tray (303) is provided. The center of the tray (303) is located at the lower end of the branch pipe (203). At the lower end of the middle part of the tray (303), a sleeve (304) is fixedly provided. In the middle of the interior of the sleeve (304), an elastic component (305) is provided. The upper end of the elastic component (305) is fixedly connected to the tray (303). At the lower end of the sleeve (304), a mounting plate (306) is provided. The mounting plate (306) is fixedly connected to the base (301). In the middle of the upper end of the mounting plate (306), a limiting post (308) is fixedly provided. The upper end of the limiting post (308) is fixedly connected to the elastic component (305). A mounting rod (307) is slidably arranged on the outside of the limiting post (308). The outer surface of the mounting rod (307) is slidably connected to the sleeve (304). Inside the mounting rod (307) and around the limiting post (308), a first spring (309) is provided. The upper and lower ends of the first spring (309) are respectively fixedly connected to the mounting rod (307) and the mounting plate (306).

2. The distillation and purification device for the production of polycyclic aromatic hydrocarbons according to claim 1, wherein: The feeding component (2) includes a raw material tank (201). The raw material tank (201) is located below one side of the housing (1). On one side of the raw material tank (201), a feeding pipe (202) is fixedly provided. The other end of the feeding pipe (202) passes through the lower end of the housing (1) and enters the interior of the housing (1). On one side of the feeding pipe (202), a branch pipe (203) is fixedly provided.

3. A distillation and purification device for the production of polycyclic aromatic hydrocarbons according to claim 2, characterized in that: The length of the feeding pipe (202) and the number of the branch pipes (203) are increased or decreased according to the size of the housing (1). At the lower end inside the branch pipe (203), a sealing ring (204) is fixedly provided. There are two sealing rings (204) up and down. Between the sealing rings (204), a sealing gasket (205) is provided. There are also two sealing gaskets (205) up and down. A connecting rod (206) is fixedly provided between the sealing gaskets (205).

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

5. A distillation and purification device for the production of polycyclic aromatic hydrocarbons according to claim 1, characterized in that: A pin (310) is slidably arranged inside the upper end of the mounting rod (307), a chute (311) is arranged on one side of the pin (310) through a sleeve (304), the depth of the chute (311) gradually decreases from bottom to top, a second spring (312) is fixedly arranged on a part of the lower end of the pin (310) located inside the mounting rod (307), and the other end of the second spring (312) is fixedly connected with the mounting rod (307).

6. The distillation and purification device for polycyclic aromatic hydrocarbon production according to claim 5, characterized in that: A connecting pipe (313) is fixedly arranged directly below the mounting rod (307) at the lower end of the mounting plate (306), a collecting tray (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), the upper end of the sealing block (315) passes through the mounting plate (306) and is fixedly connected with the mounting rod (307), the number of the distillation assemblies (3) corresponds to the number of the branch pipes (203), and only the collecting tray (314) at the bottommost of the distillation assemblies (3) is provided with through holes around it.

7. A distillation and purification device for the production of polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The aggregate assembly (4) includes a finished product tank (401), 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), the other end of the collecting pipe (402) passes through the lower end of the housing (1) and enters the interior of the housing (1), 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 with the connecting pipe (313).

8. A distillation and purification device for polycyclic aromatic hydrocarbon production according to claim 1, characterized in that: Supports (5) are fixedly arranged at both ends of the base (301), the supports (5) are inclined, the other end of the supports (5) is fixedly connected with the housing (1), the cross-section of the supports (5) is an inverted trapezoid, the two sides of the lower end of the supports (5) are circular, and diversion grooves (6) are arranged on both sides of the lower end of the supports (5), and the diversion grooves (6) are trapezoids with a narrow outer side and a wide inner side.

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