CN113877244B

CN113877244B - Aromatic hydrocarbon extraction device

Info

Publication number: CN113877244B
Application number: CN202111487662.2A
Authority: CN
Inventors: 姚爱海; 牛洪良; 齐世森; 李珍光; 李风山
Original assignee: Dongying Weilian Chemical Co ltd
Current assignee: Dongying Weilian Chemical Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-20
Anticipated expiration: 2041-12-08
Also published as: CN113877244A

Abstract

The invention discloses an aromatic hydrocarbon extraction device, and relates to the technical field of aromatic hydrocarbon extraction equipment. Including the equipment frame, the equipment frame is two-layer including interconnect's bottom mounting bracket and top mounting bracket, and the solvent jar is installed respectively and the jar is taken out to top mounting bracket top, and recovery jar and fractional distillation jar are installed respectively to bottom mounting bracket top, and solvent tank top fixedly connected with material loading pipe installs the biography material pump between solvent jar and the jar of taking out, passes through the bottom of pipe connection in the solvent jar in biography material pump suction end. According to the invention, the temperature of the extracting agent can be adjusted in real time according to the change of the environmental temperature through the arranged solvent tank with the temperature adjusting function, a heat preservation interval is formed between the arranged outer tank and the inner tank, and the heating rod is arranged in the solvent tank as a heat source, so that the extracting agent is kept at a proper temperature when the equipment is used for extracting so as to avoid the influence of the environmental temperature on the whole process, and the solvent tank can effectively preserve the heat of the internal extracting liquid so as to reduce the energy consumption.

Description

Aromatic hydrocarbon extraction device

Technical Field

The invention relates to the technical field of aromatic hydrocarbon extraction equipment, in particular to an aromatic hydrocarbon extraction device.

Background

Aromatic extraction is also called aromatic extraction, and the process of separating aromatic hydrocarbon from hydrocarbon mixture by using extractant is mainly used for recovering light aromatic hydrocarbon (benzene, toluene and various xylene) from catalytic reforming and hydrocarbon cracking gas, and sometimes recovering naphthalene from catalytic cracking diesel oil, and the residual non-aromatic hydrocarbon after extracting aromatic hydrocarbon is called raffinate oil. Aromatic hydrocarbons are abbreviated as "aromatic hydrocarbons" and generally refer to hydrocarbons having a benzene ring structure in the molecule.

Chinese patent publication No. CN108375549A discloses an extraction device and method for automatically separating petroleum components, which performs real-time detection on the extraction process, quantitatively controls the absorbance of the extraction solution, reduces human operation errors caused by judging the extraction end point with naked eyes, prevents excessive extraction, saves time and electric energy, and improves the repeatability of experimental operation.

The above patent still has the following problems in the implementation, 1, the collection mode adopted by the patent is laboratory tool, is only suitable for extracting small-magnitude petroleum, and cannot be used as large-magnitude production equipment; 2. the method adopts a common distillation mode, the by-product with higher boiling point in the extraction process can be condensed together with the product when entering the condensation, and the obtained product also contains more impurities and has lower purity.

Disclosure of Invention

The invention aims to provide an aromatic hydrocarbon extraction device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an aromatic hydrocarbon extraction device comprises an equipment frame, wherein the equipment frame comprises a bottom mounting frame and a top mounting frame which are connected with each other, a solvent tank and a lifting and pumping tank are respectively installed at the top of the top mounting frame, a recovery tank and a fractionating tank are respectively installed at the top of the bottom mounting frame, a feeding pipe is fixedly connected to the top of the solvent tank, a material transfer pump is installed between the solvent tank and the lifting and pumping tank, the liquid suction end of the material transfer pump is connected to the bottom of the solvent tank through a pipeline, the liquid outlet end of the material transfer pump is connected to the top of the outer wall of the lifting and pumping tank through a pipeline, a raw material pipe is also fixedly connected to the outer wall of the lifting and pumping tank, the bottom of the lifting and pumping tank is respectively connected with the fractionating tank and the recovery tank through a first discharging pipe and a second discharging pipe, a second discharging pipe and a first discharging pipe are respectively arranged at the bottom of the fractionating tank and the recovery tank, the solvent tank comprises an outer tank and an inner tank, and a heat preservation space is formed between the outer tank and the inner tank, and have the heater in heat preservation space internally mounted, outer tank top fixedly connected with heat preservation lid, the heat preservation lid top is connected with the material loading pipe through the inlet pipe, outer tank bottom fixedly connected with communicating pipe, and communicating pipe is linked together through the pipeline with passing the material pump.

Further, the fractionating tank includes the protective tank, protective tank bottom fixedly connected with bottom, protective tank top fixedly connected with top cap, protective tank inner wall bottom position fixedly connected with fractionating tube, fractionating tube bottom fixedly connected with sealing bottom, sealing bottom top equidistance installation heating rod, sealing bottom is connected with the second calandria through the fluid-discharge tube, and feed liquor pipe and first discharging pipe fixed connection are passed through to fractionating tube top, and the position that fractionating tube top is located the feed liquor pipe side installs the disappointing valve and two at least cooling reflux wares that are connected with fractionating tube respectively, the equal fixedly connected with collection tank in cooling reflux ware side, the collection tank runs through the protective tank, and is located the outside of protective tank, disappointing valve runs through in the protective tank inner wall.

Furthermore, the cooling reflux device comprises an oil tank, the bottom of the oil tank is communicated with the fractionating cylinder through an air inlet hopper pipe, the center position of the bottom of the oil tank is fixedly connected with the top of the fractionating cylinder through a supporting block, a flow electromagnetic valve is installed on the outer wall of the air inlet hopper pipe, the top of the air inlet hopper pipe penetrates through an S-shaped pipe fixedly connected with the bottom of the oil tank, the other end of the S-shaped pipe penetrates through the oil tank and the inner wall of the protective tank is fixedly connected with the collecting tank, an installation top plate provided with a heating roller is fixedly connected with the top of the oil tank, and a temperature probe is installed on the inner wall of the bottom of the oil tank.

Furthermore, the lifting and pumping tank comprises a tank body, a tank top fixedly connected with is arranged on the top of the tank top, a stirring motor is installed on the top of the tank top, the output end of the stirring motor runs through a stirring claw fixedly connected with the tank top, a tank bottom fixedly connected with is connected with a tank bottom through a first discharging connecting pipe, the side face of the tank bottom is connected with a second discharging pipe through a second discharging connecting pipe, the top of the back face of the outer wall of the tank body is connected with a material conveying pump through a second feeding pipe, the middle of the front face of the tank body is connected with a raw material pipe through a first feeding pipe, and the side face of the outer wall of the tank body is fixedly connected with a pressure release valve.

Furthermore, through main tributary fagging fixed connection between top mounting bracket and the bottom mounting bracket, the equal fixedly connected with in top mounting bracket and bottom mounting bracket top is used for the mount of fixed solvent jar respectively, carrying and pumping jar, recovery jar and fractionation jar, is located one of them on the mounting bracket of bottom mount fixed connection in the mount side is used for the fixed cover of fixed holding vessel, the material conveying pump is fixed in top mounting bracket top with the form of running through.

Furthermore, the top of the bottom mounting frame and the top mounting frame are fixedly connected with guardrails, the side face of the top mounting frame is provided with an escalator, the bottom of the escalator is fixedly connected with the bottom mounting frame, and the side face of the bottom mounting frame is fixedly connected with a step plate.

Furthermore, the main tributary fagging openly installs the master controller, outer jar outer wall install with heater electric connection's temperature controller, carry and draw jar, fractionate jar respectively with master controller electric connection.

Furthermore, a plurality of supporting foot frames are fixedly connected to the bottoms of the top mounting frame and the bottom mounting frame, and a pipeline support for fixing the second calandria is fixedly connected to the top of each supporting foot frame located at the bottom of the fractionating tank.

Furthermore, the position fixed mounting that bottom mount frame top is located the collection tank below has a water bath, the water bath includes a water bath section of thick bamboo, and a water bath section of thick bamboo side-mounting has the cold row, and cold row top fixedly connected with drinking-water pipe, the drinking-water pipe other end are located inside a water bath section of thick bamboo, and the miniature pump is installed to the cold row bottom, the miniature pump other end is linked together through wet return and a water bath section of thick bamboo.

Furthermore, the inner wall of the inner tank is provided with a plurality of heating bulges, and the heater is arranged inside the heating bulges.

Compared with the prior art, the invention has the beneficial effects that:

(1) this aromatic hydrocarbon extraction device, the solvent jar that has the temperature regulatory function through setting up can carry out real-time adjustment to the temperature of extractant according to ambient temperature's change, form between the outer jar that sets up and the inner tank and keep warm the interval, and set up the heating rod as the heat source inside, thereby the extractant keeps in proper temperature in order to avoid ambient temperature to whole technology's influence when making equipment extract, bilayer structure's solvent jar can effectually keep warm with this to reduce the consumption of energy to inside extraction liquid.

(2) This aromatic hydrocarbon extraction device, can let different boiling point products condense at the condensation boundary temperature of the two inside the fractionation jar that sets up, rely on the warming mill to heat the inside silicon oil that fills of oil tank, and use embedded temperature probe to carry out temperature monitoring, when carrying out the higher material of boiling point and draw, make the temperature that is used for the cooling recoverer that this material was collected keep on the boiling point of another material and be in under the condensation point of this material, thereby can realize the meticulous fractionation of material, and rely on the S-shaped pipe can let by the abundant liquefaction of extract also can let the accessory substance carry out the separation of certain degree, each cooling reflux ware is the autonomous working, with this improve the product purity who obtains.

(3) This aromatic hydrocarbon extraction device through setting up the double-deck equipment frame that is used for extracting the technology specially, with the solvent tank of large capacity, extract the jar and place on the equipment frame upper strata, will be used for the fractionation jar and the recovery tube of retrieving to install in the equipment frame below, thereby two-layer equipment rely on gravitational potential energy to carry out material transmission and has saved transmission device's cost when large-scale production to a certain extent to and be convenient for the regional maintenance of the recovery collection of product and equipment.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the backside structure of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic view of a disassembled structure of a fractionating tank according to the present invention;

FIG. 5 is a schematic illustration of a disassembled cooling reflux unit of the present invention;

FIG. 6 is a schematic view of a disassembled structure of the solvent tank of the present invention;

FIG. 7 is a schematic view of a disassembled structure of the extraction tank of the present invention;

FIG. 8 is a schematic view of the structure of the mounting bracket of the present invention;

fig. 9 is a schematic view of the structure of the water bath of the present invention.

In the figure: 1. an equipment rack; 101. a bottom mounting bracket; 102. a top mounting bracket; 103. a supporting foot rest; 104. a pipe support; 105. a step plate; 106. an escalator; 107. a main supporting plate; 108. a master controller; 109. a fixed mount; 110. fixing a sleeve; 111. a guardrail; 2. a fractionation tank; 201. a protective tank; 202. a bottom cover; 203. a top cover; 204. a fractionating cylinder; 205. cooling the reflux device; 20501. an oil tank; 20502. an air intake hopper pipe; 20503. a flow rate solenoid valve; 20504. a support block; 20505. a temperature probe; 20506. an S-shaped pipe; 20507. installing a top plate; 20508. a heating roller; 206. a collection tank; 207. sealing the bottom plate; 208. a heating rod; 209. a liquid discharge pipe; 210. a liquid inlet pipe; 211. an air release valve; 3. a recovery tank; 4. a solvent tank; 401. an outer tank; 402. a temperature controller; 403. a heat preservation cover; 404. an inner tank; 405. a heater; 406. a feed pipe; 407. a communicating pipe; 5. extracting the tank; 501. a tank body; 502. the tank bottom; 503. a first discharge connecting pipe; 504. a second discharge connecting pipe; 505. a first feeding pipe; 506. a pressure relief valve; 507. a second feeding pipe; 508. the tank top; 509. a stirring motor; 510. a stirring claw; 6. a first discharge pipe; 7. a second discharge pipe; 8. a raw material pipe; 9. feeding pipes; 10. a material conveying pump; 11. a first bank of tubes; 12. a second bank of tubes; 13. a water bath; 1301. a water bath cylinder; 1302. cold discharging; 1303. a water pumping pipe; 1304. a water return pipe; 1305. a micro water pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, e.g., the thickness or width of some layers may be exaggerated relative to other layers.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

Examples

The aromatic hydrocarbon extraction device provided by the invention is used in a process for producing benzene and toluene by extraction of hydrogenated gasoline, the principle of aromatic hydrocarbon extraction is essentially extraction and fractionation of aromatic hydrocarbon, the extractant adopted at this time is sulfolane, the boiling point of the sulfolane is 281 ℃ under the standard atmospheric pressure, the working air pressure of the device is basically consistent with atmospheric pressure, the boiling points of all substances are similar to the boiling point under the standard atmospheric pressure, the main products at this time are benzene and toluene, the boiling point of the benzene is 80.6 ℃ under the standard atmospheric pressure, the boiling point of the toluene is 110.6 ℃, the product purity needs to be improved by virtue of the boiling point difference in the subsequent fractionation process, and the liquid-phase solution can naturally volatilize even if the liquid-phase solution does not reach the boiling point under the natural state.

As shown in fig. 1 to 9, the present invention provides a technical solution: an aromatic hydrocarbon extraction device comprises an equipment frame 1, the equipment frame 1 comprises a bottom mounting frame 101 and a top mounting frame 102 which are connected with each other, a solvent tank 4 and a lifting tank 5 are respectively arranged at the top of the top mounting frame 102, a recovery tank 3 and a fractionation tank 2 are respectively arranged at the top of the bottom mounting frame 101, a feeding pipe 9 is fixedly connected at the top of the solvent tank 4, a material transfer pump 10 is arranged between the solvent tank 4 and the lifting tank 5, the liquid suction end of the material transfer pump 10 is connected with the bottom of the solvent tank 4 through a pipeline, the liquid outlet end of the material transfer pump 10 is connected with the top of the outer wall of the lifting tank 5 through a pipeline, a raw material pipe 8 is also fixedly connected on the outer wall of the lifting tank 5, the bottom of the lifting tank 5 is respectively connected with the fractionation tank 2 and the recovery tank 3 through a first discharging pipe 6 and a second discharging pipe 7, a second discharging pipe 12 and a first discharging pipe 11 are respectively arranged at the bottom of the fractionation tank 2 and the bottom of the recovery tank 3, the solvent tank 4 comprises an outer tank 401 and an inner tank 404, a heat preservation space is formed between the outer tank 401 and the inner tank 404, a heater 405 is arranged in the heat preservation space, the top of the outer tank 401 is fixedly connected with a heat preservation cover 403, the top of the heat preservation cover 403 is connected with a feeding pipe 9 through a feeding pipe 406, the bottom of the outer tank 401 is fixedly connected with a communicating pipe 407, the communicating pipe 407 is communicated with a material transfer pump 10 through a pipeline, the fractionating tank 2 comprises a protective tank 201, the bottom of the protective tank 201 is fixedly connected with a bottom cover 202, the top of the protective tank 201 is fixedly connected with a top cover 203, the bottom of the inner wall of the protective tank 201 is fixedly connected with a fractionating cylinder 204, the bottom of the fractionating cylinder 204 is fixedly connected with a sealing bottom plate 207, heating rods 208 are arranged at the top of the sealing bottom plate 207 at equal intervals, the bottom of the sealing bottom plate 207 is connected with a second discharging pipe 12 through a liquid discharging pipe 209, the top of the fractionating cylinder 204 is fixedly connected with a first discharging pipe 6 through a liquid feeding pipe 210, and the top of the fractionating cylinder 204 is provided with a gas release valve 211 and at least two cooling reflux devices 205 which are respectively arranged at the side of the liquid feeding pipe 210, the equal fixedly connected with holding vessel 206 in cooling return 205 side, holding vessel 206 runs through protection jar 201, and is located protection jar 201's the outside, air escape valve 211 run through in protection jar 201 inner wall, and inner tank 404 inner wall is provided with a plurality of heating archs, and heater 405 installs in the protruding inside of heating.

It is to be noted that, in order to cope with the influence of climate change on the production in the production process and improve the extraction efficiency of the hydrogenated gasoline, the solvent tank 4 is used as a storage device of the extracting agent, the heater 405 provided inside is a resistance rod, the heater 405 is fitted in the protrusion of the inner tank 404 to heat the extractant by the inner tank 404, a temperature sensor is arranged in the inner tank 404 and is connected with a temperature controller 402 on the surface of the outer tank 401, a heater 405 is preferably heated to 70-90 ℃ of the extractant, the hydrogenated gasoline is efficiently extracted by adopting an efficient extraction mode when the extraction distribution ratio is more than 10, when the extractant is mixed with the hydrogenated gasoline, the temperature is transferred to aromatic hydrocarbons in the hydrogenated gasoline, so that the activity of the aromatic hydrocarbons is increased, the diffusion speed is accelerated, and the extraction efficiency is further increased.

The cooling reflux device 205 comprises an oil tank 20501, the bottom of the oil tank 20501 is communicated with the fractionating cylinder 204 through an air inlet bucket pipe 20502, the center position of the bottom of the oil tank 20501 is fixedly connected with the top of the fractionating cylinder 204 through a supporting block 20504, a flow electromagnetic valve 20503 is installed on the outer wall of the air inlet bucket pipe 20502, the top of the air inlet bucket pipe 20502 penetrates through an S-shaped pipe 20506 fixedly connected with the bottom of the oil tank 20501, the other end of the S-shaped pipe 20506 penetrates through the inner walls of the oil tank 20501 and the protective tank 201 and is fixedly connected with the collecting tank 206, the top of the oil tank 20501 is fixedly connected with a mounting top plate 20507 provided with a heating roller 20508, and a temperature probe 20505 is installed on the inner wall of the bottom of the oil tank 20501.

It should be noted that the operation principle of the cooling reflux device 205 as the key for improving the product purity is as follows, when the fractionating cylinder 204 is heated by the bottom heating rod 208, firstly, the solution temperature is controlled at 85-95 ℃ to extract benzene, the oil tank 20501 in the cooling reflux device 205 is filled with silicone oil in advance, and the heating roller 20508 is used to heat the silicone oil to 81-85 ℃, the benzene vapor is not liquefied when passing through the S-shaped pipe 20506, the vapor of the opposite toluene and solvent is liquefied in the S-shaped pipe 20506 due to high boiling point, and after being liquefied, the vapor will flow back to the fractionating cylinder 204 for further fractionation, when the flow rate of the gas detected by the flow rate electromagnetic valve 20503 on the cooling reflux device 205 for collecting benzene is nearly disappeared, the flow rate electromagnetic valve 20503 will be closed, and the power of the heating rod 208 is increased to 111 + 120 ℃, and then the flow rate electromagnetic valve 20503 on the second cooling reflux device 205 will be opened, the flow electromagnetic valve 20503 is an electromagnetic valve combined with a flow meter, the temperature of the silicone oil inside the electromagnetic valve is between 110 ℃ and 115 ℃, the extraction of the toluene is carried out, and the solution remained after the extraction of the two products is finished is discharged through the second discharge pipe 12.

The extraction tank 5 comprises a tank body 501, a tank top 508 fixedly connected to the top of the tank body 501, a stirring motor 509 is installed at the top of the tank top 508, the output end of the stirring motor 509 runs through a stirring claw 510 fixedly connected to the tank top 508, a tank bottom 502 fixedly connected to the bottom of the tank body 501, the bottom of the tank bottom 502 is connected to a first discharge pipe 6 through a first discharge connecting pipe 503, the side surface of the tank bottom 502 is connected to a second discharge pipe 7 through a second discharge connecting pipe 504, the top surface of the outer wall back of the tank body 501 is connected to a material transfer pump 10 through a second feeding pipe 507, the middle part of the front surface of the tank body 501 is connected to a raw material pipe 8 through a first feeding pipe 505, and a pressure release valve 506 is fixedly connected to the side surface of the outer wall of the tank body 501.

It should be noted that, in order to ensure the sufficient contact between the extractant and the hydrogenated gasoline during the extraction process, the stirring motor 509 and the stirring claw 510 are arranged in the extraction tank 5 to mix and stir the extractant, so that the extractant and the stirring claw are in sufficient contact for extraction, and the extraction efficiency can be increased by matching with the extraction liquid at a higher temperature.

The top mounting frame 102 and the bottom mounting frame 101 are fixedly connected through a main support plate 107, the tops of the top mounting frame 102 and the bottom mounting frame 101 are fixedly connected with fixing frames 109 for respectively fixing the solvent tank 4, the extraction tank 5, the recovery tank 3 and the fractionation tank 2, one fixing frame 109 side fixedly connected with a fixing sleeve 110 for fixing the collection tank 206 on the bottom mounting frame 101, the material transfer pump 10 is fixed on the top of the top mounting frame 102 in a penetrating manner, the tops of the bottom mounting frame 101 and the top mounting frame 102 are fixedly connected with a guardrail 111, the side surface of the top mounting frame 102 is provided with a ladder 106, the bottom of the ladder 106 is fixedly connected with the bottom mounting frame 101, the side surface of the bottom mounting frame 101 is fixedly connected with a step plate 105, the main support plate 107 is positively provided with a master controller 108, the outer wall of the outer tank 401 is provided with a temperature controller 402 electrically connected with a heater 405, the temperature controller 402, the extraction tank 5, the temperature controller 402, Fractionation tank 2 respectively with total controller 108 electric connection, a plurality of supporting foot rests 103 of the equal fixedly connected with in top mounting bracket 102 and bottom mounting bracket 101 bottom, the supporting foot rest 103 top fixedly connected with that is located fractionation tank 2 bottom is used for the pipeline support 104 of fixed second calandria 12, the fixed position that bottom mounting bracket 101 top is located the collection tank 206 below installs water bath 13, water bath 13 includes a water bath section of thick bamboo 1301, water bath section of thick bamboo 1301 side-mounting has cold row 1302, cold row 1302 top fixedly connected with drinking-water pipe 1303, the drinking-water pipe 1303 other end is located inside water bath section of thick bamboo 1301, miniature pump 1305 is installed to cold row 1302 bottom, the miniature pump 1305 other end is linked together through wet return 1304 and water bath section of thick bamboo 1301.

It should be noted that the production of the equipment needs a special support to ensure that the layout of the equipment is more reasonable, the adopted equipment frame 1 is designed in a layered mode, the solvent tank 4 for placing the raw material and the extracting agent and the extraction tank 5 are positioned on the top mounting frame 102, the solvent reaches the interior of the solvent tank 4 through the feeding pipe 9 to be heated, after the heating is finished, the solvent is conveyed into the extraction tank 5 through the delivery pump 10, the raw material of the hydrogenated gasoline reaches the interior of the extraction tank 5 through the feeding pipe 8, the raw material and the hydrogenated gasoline are fully mixed and extracted by matching with the stirring of the stirring claw 510 in the extraction tank 5, after the continuous stirring is carried out for 30-40 minutes, the mixed solution is kept still for a while until the extracting agent and the hydrogenated gasoline are layered, because the extracting agent adopts sulfolane with higher density, the extracting agent mixed with the aromatic hydrocarbon is conveyed into the extraction tank 2 through the first discharging pipe 6 by means of the solution gravity, after the fractionating agent is finished, then the hydrogenated gasoline is transferred to the recovery tank 3 through the second discharge pipe 7 for recovery, the benzene and toluene products are obtained in the collection tank 206 after the fractionation is completed in the fractionation tank 2, and the extractant is recovered through the second discharge pipe 12.

It should be noted that, since the benzene or toluene coming out of the cooling reflux unit 205 is discharged in the form of steam, which needs to be liquefied for collection, the water bath 13 is disposed outside the collection tank 206, and the water bath barrel 1301 inside the water bath 13 is placed with cold water in advance, so that in consideration of the large amount of heat generated during liquefaction, the micro water pump 1305 and the cold discharge 1302 are additionally disposed on the outer wall of the water bath barrel 1301 for dissipating heat from the water in the water bath barrel 1301, thereby ensuring a good liquefaction effect.

The operation of the equipment depends on the electric equipment, the master controller 108 of the equipment positioned on the main supporting plate 107 can monitor all electric elements in the equipment and can be adjusted according to different product types and raw material types, so that the equipment can be suitable for more extraction processes, the application range of the equipment is enlarged, and the step plate 105, the escalator 106 and the guardrail 111 of the equipment on the equipment frame 1 can facilitate the daily maintenance of workers and the control of the equipment to have indispensable functions.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An aromatic hydrocarbon extraction device comprises an equipment frame (1), wherein the equipment frame (1) comprises a bottom mounting rack (101) and a top mounting rack (102) which are connected with each other, and is characterized in that: the top of the top mounting frame (102) is respectively provided with a solvent tank (4) and a lifting and pumping tank (5), the top of the bottom mounting frame (101) is respectively provided with a recovery tank (3) and a fractionation tank (2), the top of the solvent tank (4) is fixedly connected with a feeding pipe (9), a material conveying pump (10) is arranged between the solvent tank (4) and the lifting and pumping tank (5), the liquid suction end of the material conveying pump (10) is connected to the bottom of the solvent tank (4) through a pipeline, the liquid outlet end of the material conveying pump (10) is connected to the top of the outer wall of the lifting and pumping tank (5) through a pipeline, the outer wall of the lifting and pumping tank (5) is also fixedly connected with a raw material pipe (8), the bottom of the lifting and pumping tank (5) is respectively connected with the fractionation tank (2) and the recovery tank (3) through a first discharging pipe (6) and a second discharging pipe (7), the bottom of the fractionation tank (2) and the bottom of the recovery tank (3) are respectively provided with a second discharging pipe (12) and a first discharging pipe (11), the solvent tank (4) comprises an outer tank (401) and an inner tank (404), a heat preservation space is formed between the outer tank (401) and the inner tank (404), a heater (405) is installed in the heat preservation space, a heat preservation cover (403) is fixedly connected to the top of the outer tank (401), the top of the heat preservation cover (403) is connected with the feeding pipe (9) through a feeding pipe (406), a communicating pipe (407) is fixedly connected to the bottom of the outer tank (401), and the communicating pipe (407) is communicated with the material conveying pump (10) through a pipeline;

the fractionating tank (2) comprises a protective tank (201), a bottom cover (202) is fixedly connected to the bottom of the protective tank (201), a top cover (203) is fixedly connected to the top of the protective tank (201), a fractionating cylinder (204) is fixedly connected to the bottom of the inner wall of the protective tank (201), a sealing bottom plate (207) is fixedly connected to the bottom of the fractionating cylinder (204), heating rods (208) are installed at the top of the sealing bottom plate (207) at equal intervals, the bottom of the sealing bottom plate (207) is connected with a second calandria (12) through a liquid discharge pipe (209), the top of the fractionating cylinder (204) is fixedly connected with a first discharge pipe (6) through a liquid inlet pipe (210), an air release valve (211) and at least two cooling reflux devices (205) which are connected with the fractionating cylinder (204) are respectively installed at positions on the top of the side of the liquid inlet pipe (210), and a collecting tank (206) is fixedly connected to the side of the cooling reflux devices (205), the collecting tank (206) penetrates through the protective tank (201) and is positioned on the outer side of the protective tank (201), and the air release valve (211) penetrates through the inner wall of the protective tank (201);

the cooling reflux device (205) comprises an oil tank (20501), the bottom of the oil tank (20501) is communicated with the fractionating cylinder (204) through an air inlet hopper pipe (20502), the center of the bottom of the oil tank (20501) is fixedly connected with the top of the fractionating cylinder (204) through a supporting block (20504), a flow electromagnetic valve (20503) is installed on the outer wall of the air inlet hopper pipe (20502), the top of the air inlet hopper pipe (20502) penetrates through the bottom of the oil tank (20501) and is fixedly connected with an S-shaped pipe (20506), the other end of the S-shaped pipe (20506) penetrates through the oil tank (20501) and the inner wall of the protective tank (201) and is fixedly connected with the collecting tank (206), the top of the oil tank (20501) is fixedly connected with an installation top plate (20507) provided with a heating roller (20508), and a temperature probe (20505) is installed on the inner wall of the bottom of the oil tank (20501).

2. An aromatics extraction plant as claimed in claim 1, wherein: the extraction tank (5) comprises a tank body (501), a tank top (508) is fixedly connected to the top of the tank body (501), a stirring motor (509) is installed at the top of the tank top (508), an output end of the stirring motor (509) runs through a stirring claw (510) fixedly connected to the tank top (508), a tank bottom (502) is fixedly connected to the bottom of the tank body (501), the bottom of the tank bottom (502) is connected with a first discharging pipe (6) through a first discharging connecting pipe (503), the side face of the tank bottom (502) is connected with a second discharging pipe (7) through a second discharging connecting pipe (504), the top of the outer wall back of the tank body (501) is connected with a material conveying pump (10) through a second feeding pipe (507), the middle part of the front face of the tank body (501) is connected with a raw material pipe (8) through a first feeding pipe (505), and a pressure release valve (506) is fixedly connected to the side face of the outer wall of the tank body (501).

3. An aromatics extraction plant as claimed in claim 1, wherein: through main backup pad (107) fixed connection between top mounting bracket (102) and bottom mounting bracket (101), top mounting bracket (102) and bottom mounting bracket (101) top all fixedly connected with be used for respectively fixed solvent jar (4), carry and draw jar (5), retrieve mount (109) of jar (3) and fractionation jar (2), be located one of on bottom mounting bracket (101) mount (109) side fixedly connected with is used for fixed cover (110) of collection tank (206), pass material pump (10) are fixed in top mounting bracket (102) top with the form of running through.

4. An aromatics extraction plant as claimed in claim 3, wherein: the escalator is characterized in that the top of the bottom mounting frame (101) and the top of the top mounting frame (102) are fixedly connected with guardrails (111), the side surface of the top mounting frame (102) is provided with an escalator (106), the bottom of the escalator (106) is fixedly connected with the bottom mounting frame (101), and the side surface of the bottom mounting frame (101) is fixedly connected with a step plate (105).

5. An aromatics extraction plant as claimed in claim 3, wherein: main tributary fagging (107) openly install master controller (108), outer jar (401) outer wall install with heater (405) electric connection's temperature controller (402), carry and draw jar (5), fractionate jar (2) respectively with master controller (108) electric connection.

6. An aromatics extraction plant as claimed in claim 2, wherein: the bottom of the top mounting rack (102) and the bottom mounting rack (101) are fixedly connected with a plurality of supporting foot frames (103), and the top of the supporting foot frame (103) positioned at the bottom of the fractionating tank (2) is fixedly connected with a pipeline support (104) used for fixing the second calandria (12).

7. An aromatics extraction plant as claimed in claim 1, wherein: bottom mounting bracket (101) top is located the fixed position of collection tank (206) below and installs water bath (13), water bath (13) are including a water bath section of thick bamboo (1301), and a water bath section of thick bamboo (1301) side-mounting has cold row (1302), and cold row (1302) top fixedly connected with drinking-water pipe (1303), and the drinking-water pipe (1303) other end is located inside a water bath section of thick bamboo (1301), and miniature pump (1305) are installed to cold row (1302) bottom, miniature pump (1305) other end is linked together through wet return (1304) and a water bath section of thick bamboo (1301).

8. An aromatics extraction plant as claimed in claim 1, wherein: the inner wall of the inner tank (404) is provided with a plurality of heating bulges, and the heater (405) is arranged inside the heating bulges.