Continuous production equipment and production method for extracting heavy oil from asphalt rock

Abstract

The present invention belongs to the technical field of heavy oil extraction devices, and specifically relates to continuous production equipment and a production method for asphalt rock heavy oil extraction. The production equipment comprises a crushing device, an extraction device, a filtering device, and a distillation device. The outlet end of the crushing device is connected to the inlet end of the extraction device, the outlet end of the extraction device is connected to the inlet end of the filtering device, and the outlet end of the filtering device is connected to the inlet end of the distillation device; the filtering device comprises a filter tank, and a fixed filter bucket, a movable filter bucket, and a guide plate are arranged in the filter tank from top to bottom. The asphalt heavy oil production and extraction process is simple, the overall equipment occupies a small space, the production cost is low, continuous production is realized, the mixed oil is filtered by filter pressure, and the heavy oil extraction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of heavy oil extraction devices, and in particular relates to continuous production equipment and a production method thereof for extracting heavy oil from asphalt rocks. Background Art

[0002] Asphalt rock is a type of natural asphalt. It is a natural asphalt formed by the long-term evaporation and solidification of petroleum that continuously emerges from the earth's crust and exists in the cracks of mountains and rocks. Under natural conditions, the physical properties of asphalt rock are close to those of "coal", and its main components are mostly asphaltene, colloid or mineral asphalt matrix. The current common way to extract heavy oil from asphalt rock is to extract asphalt oil by solvent extraction. The production equipment in the prior art cannot form continuous production due to structural and sealing reasons, and is relatively cumbersome during the production and transportation process, and has low production efficiency. The primary mixed oil after asphalt, in addition to containing a large amount of solvents and asphalt oil, also contains a small amount of fine mineral sand, which is not only very easy to damage the oil pump for extracting the mixed oil in post-processing.

[0003] Patent No.: CN201721049823.9, discloses a composite solvent continuous extraction system for oil sand oil, including a crusher, an extractor, a degassing machine and a first evaporator. In this application, a composite solvent is used to extract oil sand oil. The mixed liquid after extraction contains a large amount of tailings, and the asphalt mixed oil extracted from asphalt rock is viscous. The fine yarn separation device cannot effectively remove the tailings, and it is easy to get blocked, resulting in high failure rate, low separation efficiency and other problems. After treatment, there will still be a small amount of fine yarn impurities in the mixed oil, which affects the subsequent distillation process. Summary of the invention

[0004] In view of the above problems, the present invention discloses a continuous production device and a production method for extracting heavy oil from asphalt rock, adopts a solvent extraction method to extract heavy oil from asphalt rock, and solves the problem that the mixed oil after extraction contains sand and stone impurities, which affects the quality of heavy oil and the service life of equipment.

[0005] The specific technical solutions are as follows:

[0006] A continuous production device for extracting heavy oil from asphalt rock, comprising a crushing device, an extraction device, a filtering device, and a distillation device, wherein the outlet of the crushing device is connected to the inlet of the extraction device, the outlet of the extraction device is connected to the inlet of the filtering device, and the outlet of the filtering device is connected to the inlet of the distillation device;

[0007] The filter device comprises a filter tank, an oil inlet pipe is provided on the side wall of the upper end of the filter tank, and an oil inlet port is provided on the inner wall of the filter tank at the position of the oil inlet pipe; an oil discharge pipe is provided at the center of the bottom end of the filter pipe, and the upper end of the oil discharge pipe vertically penetrates the bottom of the filter tank upward and enters the filter tank. A fixed filter bucket, a movable filter bucket and a guide plate are arranged in the filter tank from top to bottom. The guide plate is located above the oil discharge pipe, the guide plate is in a round bucket shape, and the lower end is opened. The inner cavity of the filter tank is located below the guide plate to form a filter material bin; the fixed filter bucket and the movable filter bucket are both in a round bucket shape, and a plurality of filter holes are provided on the conical side walls of the fixed filter bucket and the movable filter bucket, wherein the upper end of the fixed filter bucket is fixedly connected to the inner wall of the filter tank, and a connecting seat is provided at the center of the lower end of the fixed filter bucket, and a mounting hole is provided at the center of the connecting seat, and a hollow tube is longitudinally penetrated in the mounting hole, and the hollow tube is rotatably connected to the connecting seat through a bearing, and a plurality of liquid inlet holes are provided at the upper end of the hollow tube, and the horizontal position of the liquid inlet hole is not lower than the horizontal position of the top of the connecting seat. The top of the core tube is connected with a driving shaft, and the upper end of the driving shaft is driven to rotate by a driving motor installed on the top of the filter tank. The bottom end of the hollow tube is opened and embedded in the oil drain pipe. A support frame is provided in the oil drain pipe, and the center of the support frame is rotatably connected to the lower end of the hollow tube through a bearing. A telescopic tube is elastically connected to the support frame through an elastic support member, and the telescopic tube is longitudinally slidably connected to the oil drain pipe. The top of the telescopic tube extends out of the oil drain pipe and presses against the lower end opening of the guide plate. A first opening is provided on the inner side of the top of the telescopic tube; the movable filter bucket is longitudinally slidably arranged in the filter tank, and a second opening is provided at the center of the lower end of the movable filter bucket, the lower end of the hollow tube is provided with an external thread, and the lower end of the hollow tube is threadedly connected with a lifting seat, and the lifting seat is lifted and lowered in cooperation with the first opening or the second opening under the rotation of the hollow tube, and when the lifting seat rises, the movable filter bucket is driven to rise, so that the movable filter bucket cooperates with the fixed filter bucket to squeeze and filter the mixed oil, and when the lifting seat descends, it presses the telescopic tube downward to open the filter bin and discharge the filter material.

[0008] Furthermore, the crushing device includes a crushing bin, a feeding hopper is provided at the upper end of the crushing bin, the lower end of the crushing bin is contracted, and a discharge pipe is provided on one side of the lower end of the crushing bin, and the lower end of the discharge pipe is connected to a screw conveyor, and a crushing chamber, a grinding chamber and a pretreatment chamber are provided in the crushing bin from top to bottom, and two crushing rollers rotating in pairs are horizontally provided in the crushing chamber; a grinding liner is provided on the inner wall of the grinding chamber, and a grinding rotor is provided in the grinding chamber, and a rotating shaft is longitudinally provided at the center of the bottom end of the grinding rotor, and the lower end of the rotating shaft passes through the bottom end of the crushing bin and is driven to rotate by a rotating motor installed at the bottom end of the crushing bin; a mixing frame and a steam heating component are provided in the pretreatment chamber, and the mixing frame includes a scraper rod and a stirring rod, and the scraper rod is a U-shaped structure, and the center of the scraper rod is fixedly arranged on the rotating shaft, and the bottom end and both sides of the scraper rod are arranged in contact with the inner side wall of the lower end of the pretreatment chamber, and the stirring rod is longitudinally arranged on the scraper rod.

[0009] Furthermore, the steam heating component includes an air supply ring pipe, a positioning bracket, and a heat conduction pipe. The air supply ring pipe is in a circular ring shape, and the positioning bracket is arranged on the air supply ring pipe. The positioning bracket is arranged horizontally, and the positioning bracket is fixedly connected to both ends of the air supply ring pipe. The ends of the positioning bracket are fixedly connected to the inner wall of the crushing bin. A ring is arranged in the center of the positioning bracket, and the ring is sleeved on the rotating shaft and is rotatably connected to the rotating shaft through a bearing; one end of the air supply ring pipe is connected to an air inlet pipe, and the air inlet pipe horizontally penetrates the side wall of the crushing bin and is connected to the steam source; a plurality of heat conduction pipes are evenly distributed at the bottom of the air supply ring pipe, and the heat conduction pipes are all arranged longitudinally and staggered with the stirring rod; a plurality of air outlet holes are opened at the lower end of the heat conduction pipe, and the lower end of the heat conduction pipe is detachably connected to an outer sleeve, a plurality of through holes are opened on the upper surface of the outer sleeve, and a baffle is provided on the outer wall of the outer sleeve at each through hole, and the lower end of the baffle is opened.

[0010] Furthermore, the extraction device comprises an extraction tank and a precipitation tank, wherein the upper end of one side of the extraction tank is connected to the feeding pipe opening of the screw feeder, the extraction tank is arranged above the precipitation tank, the bottom of the extraction tank is connected to the top of the precipitation tank through a longitudinally arranged connecting pipe, so that the extraction tank and the precipitation tank are connected, and a switch valve is arranged at the lower end of the connecting pipe; a spiral heat-conducting coil is arranged in the inner cavity of the extraction tank, and the heat-conducting coil is used to circulate heat-conducting oil or steam, the inlet end and the outlet end of the heat-conducting coil penetrate the side wall of the extraction tank and are connected to the heat-conducting source, a liquid inlet pipe is arranged on one side of the top of the extraction tank, and the liquid inlet pipe is connected to the composite solvent delivery pipe, a stirring shaft is arranged in the extraction tank, and a stirring blade is arranged on the stirring shaft, the upper end of the stirring shaft is driven to rotate by a stirring motor installed on the top of the extraction tank, the lower end of the stirring shaft extends into the connecting pipe and is provided with a spiral auger, and the lower end of the stirring shaft is positioned by a positioning bracket installed at the lower end of the inner cavity of the extraction tank; a lifting and extraction device is arranged on one side of the upper end of the precipitation tank, and the lifting and extraction device is connected to the inlet end of the filtering device through a pipeline, and a drainage pipe is arranged at the bottom of the precipitation tank.

[0011] Furthermore, the lifting and extraction device includes a servo motor, a fixed sleeve, a lifting tube, a rotating sleeve, and a filter head. The servo motor is arranged on one side of the top of the sedimentation tank through a bracket, and the output shaft of the servo motor longitudinally penetrates the top of the sedimentation tank and is connected to a driving gear; the fixed sleeve longitudinally penetrates one side of the top of the sedimentation tank, a sliding groove is longitudinally opened on the inner wall of the fixed sleeve, a lifting tube is arranged in the fixed sleeve, and the filter head is detachably arranged on the lower end of the lifting tube, a spiral guide groove is arranged from top to bottom on the outer wall of the lifting tube, and a sliding block for cooperating with the sliding groove is arranged on the outer wall of the top of the lifting tube, so as to realize the sliding connection between the lifting tube and the fixed sleeve; the bottom end of the fixed sleeve is rotatably connected with the rotating sleeve, and a guide block is arranged on the inner wall of the rotating sleeve, and the guide block is embedded in the spiral guide groove arranged on the lifting tube, and a circle of gear blocks is arranged on the outer wall of the rotating sleeve, and the rotating sleeve is meshed with the driving gear through the gear block, so that the servo motor drives the rotating sleeve to rotate through the driving gear and drives the lifting tube to rise and fall under the cooperation of the guide block in the spiral guide groove.

[0012] Furthermore, the filter head includes a base and a filter cover, and a stepped groove that is plugged into each other is provided between the top edge of the base and the bottom edge of the filter cover. The base is conically contracted, and a threaded groove is provided at the center of the top end of the base. The threaded groove is threadedly connected to the bottom end of the lifting tube, and a plurality of suction ports are provided on the side wall of the lower end of the lifting tube; the filter cover is a conical structure, and a filter screen is provided on the conical surface of the filter cover, and a sleeve is provided at the top of the filter cover, which is sleeved on the lifting tube, and a circle of limiting rings is provided on the side wall of the lower end of the lifting tube, and the limiting rings are pressed against the top of the sleeve for limiting.

[0013] Furthermore, a circle of annular seats is provided at the upper edge of the movable filter bucket, the outer wall of the annular seat is fitted with the inner wall of the filter tank, at least two grooves are opened on the outer wall of the annular seat, a slide rail is provided in the groove through which a sliding block slides, the slide rail is located in the groove and is longitudinally arranged on the inner wall of the filter tank, the upper end of the slide rail extends to the fixed filter bucket, and the lowest position of the annular seat on the slide rail is lower than the position of the oil inlet; a circular ring seat is provided at the opening position of the lower end of the movable filter bucket, the second opening is provided on the inner side of the circular ring seat, the lifting seat is provided in the second opening, and the lifting seat is sleeved on the hollow tube and connected to the hollow The pipe is threadedly connected, and the lifting seat includes a support portion and a positioning portion. The length and width of the support portion are larger than the length and width of the positioning portion. There are two positioning portions, which are respectively arranged at the upper and lower ends of the support portion, and the cross-sections of the two positioning portions are polygonal structures and are respectively adapted to the size and shape of the first through opening and the second through opening, so that the first through opening and the second through opening limit the rotation of the lifting seat, realize the rotation of the hollow pipe and drive the lifting seat to rise and fall. When the lifting seat rises, the support portion supports the annular seat upward and drives the movable filter bucket to rise. When the lifting seat descends, the support portion presses the telescopic tube downward and drives the telescopic tube to descend.

[0014] Furthermore, the elastic support member includes a guide rod and a spring. The guide rod is fixedly arranged on both sides of the bottom of the telescopic tube. The lower end of the guide rod longitudinally penetrates the support frame and is slidably connected thereto. The spring is sleeved on the upper end of the guide rod and is used to support the bottom of the telescopic tube, so that the upper end edge of the telescopic tube is pressed against the lower end opening of the guide plate.

[0015] Furthermore, the distillation device includes a distillation kettle, a heating jacket is provided at the lower end of the distillation kettle, one side of the distillation kettle is connected to the oil drain pipe, an exhaust pipe is provided at the top end of the distillation kettle, and an oil outlet pipe is provided at the bottom end.

[0016] A production method for continuous production equipment used for extracting heavy oil from asphalt rock, the method comprising the following steps:

[0017] Step 1: Add the asphalt rock to the crushing device, the asphalt rock is crushed and ground into fine sand, the fine sand is softened by high temperature mixing, and then transported to the extraction device;

[0018] Step 2: The spun yarn is subjected to high temperature mixing treatment by a composite solvent in an extraction tank to form a mixed material;

[0019] Step 3: Open the switch valve to allow the mixed material to flow into the sedimentation tank for sedimentation, so that the mixed oil and tailings are separated, and the lifting extraction device extracts the mixed oil at the upper end of the mixed material and transports it to the filtering device;

[0020] Step 4: The mixed oil in the filter tank is squeezed and filtered through the movable filter bucket and the fixed filter bucket, and the filtered mixed oil is pumped into the distillation kettle through the oil discharge pipe, and the tailings remaining on the movable filter bucket and the fixed filter bucket are discharged into the filter material bin under the action of the vibration motor;

[0021] Step 5: The mixed oil is heated to 100-120°C in a distillation kettle and the vacuum is controlled at 2-3KPa, so that the composite solvent is converted into gas and output, leaving the asphalt heavy oil.

[0022] The beneficial effects of the present invention are embodied in:

[0023] Compared with the prior art, the asphalt heavy oil production and extraction process of the present invention is simple, the overall equipment occupies a small space, the production cost is low, continuous production is achieved, the mixed oil is filtered by filter pressure, and the heavy oil extraction efficiency is improved.

[0024] The steam heating device of the present invention arranges an outer sleeve outside the heat conducting pipe so that high temperature steam can be released through the through holes, and the shield outside each through hole can effectively prevent oil sand from entering the heat conducting pipe, thereby improving the service life of the steam heating device.

[0025] The present invention adopts a sedimentation tank to further precipitate the mixed material, and utilizes a lifting extraction device to extract the supernatant mixed oil, which greatly reduces the tailings content in the mixed oil and reduces the burden of tailings treatment in subsequent processes; by observing the separation position of oil and sand through an observation port and adjusting the height position of the filter head, the extraction efficiency of the mixing chamber can be maximized.

[0026] (4) The filtering device of the present invention can drive the lifting seat to rise and fall through the rotation of the hollow tube. When the lifting seat rises, it drives the movable filter bucket to rise, so that the movable filter bucket and the fixed filter bucket are squeezed and matched to achieve pressure filtration of the mixed oil, effectively solving the problem of low filtration efficiency caused by the high viscosity of the asphalt mixed oil; when the lifting seat descends, it presses down the telescopic tube and closes the oil discharge pipe, so that the filter material can fall into the filter material bin, thereby achieving impurity removal and reducing the burden of manual impurity removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the crushing device in the present invention.

[0029] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0030] Figure 4 It is a transverse cross-sectional view of the pretreatment chamber in the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the extraction device in the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the lifting and extracting device in the present invention.

[0033] Figure 7 It is a three-dimensional diagram of the filter cover in the present invention.

[0034] Figure 8 It is a schematic diagram of the structure of the filtering device in the present invention.

[0035] Fig. 9 for Figure 8 Enlarged schematic diagram of point B in the middle.

[0036] Fig.10 It is a schematic diagram of the structure after the lifting seat in the present invention is lowered.

[0037] Fig.11 It is a three-dimensional diagram of the lifting seat in the present invention.

[0038] Crushing device 1, crushing bin 11, crushing chamber 101, grinding chamber 102, pre-treatment chamber 103, feed hopper 12, discharge pipe 13, screw conveyor 131, crushing roller 14, grinding liner 15, grinding rotor 16, rotating shaft 17, rotating motor 18, mixing frame 19, scraping rod 191, stirring rod 192;

[0039] Steam heating component 2, gas transmission ring pipe 21, air inlet pipe 211, positioning bracket 22, heat conducting pipe 23, air outlet 231, outer sleeve 24, through hole 241, shield 242;

[0040] Extraction device 3, extraction tank 31, precipitation tank 32, impurity discharge pipe 321, observation port 322, connecting pipe 33, switch valve 331, heat conducting coil 34, liquid inlet pipe 35, stirring shaft 36, spiral auger 361, stirring blade 362, stirring motor 37, positioning bracket 38;

[0041] Lifting and extraction device 4, servo motor 41, driving gear 411, fixed sleeve 42, slide groove 421, lifting tube 43, slider 431, spiral guide groove 432, limit ring 433, suction port 434, rotating sleeve 44, guide block 441, gear block 442, filter head 45, base 451, threaded groove 4511, filter cover 452, filter screen 4521, sleeve seat 4522;

[0042] Filter device 5, filter tank 51, oil inlet pipe 511, oil inlet port 512, oil discharge pipe 513, telescopic tube 514, guide rod 5141, spring 5142, first port 5143, slide rail 515, fixed filter bucket 52, filter hole 521, connecting seat 522, mounting hole 5221, movable filter bucket 53, annular seat 531, groove 532, annular seat 533, second port 5331, guide plate 54, lifting seat 55, support portion 551, positioning portion 552, filter bin 56, discharge door 561, hollow tube 57, liquid inlet hole 571, support frame 572, drive shaft 573, drive motor 58, vibration motor 59;

[0043] Distillation device 6, distillation kettle 61, heating jacket 62, oil outlet pipe 63, exhaust pipe 64. DETAILED DESCRIPTION

[0044] In order to make the technical solution of the present invention clearer, the present invention is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived from conventional reasoning shall fall within the protection scope of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0045] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0046] like Figure 2 As shown, the crushing device 1 includes a crushing chamber 11, a feed hopper 12 is provided at the upper end of the crushing chamber 11, the lower end of the crushing chamber 11 is contracted, and a discharge pipe 13 is provided on one side of the lower end of the crushing chamber 11, and the lower end of the discharge pipe 13 is connected to a screw conveyor 131. A crushing chamber 101, a grinding chamber 102, and a pretreatment chamber 103 are sequentially provided in the crushing chamber 11 from top to bottom. Two crushing rollers 14 rotating against each other are horizontally provided in the crushing chamber 101; a grinding liner is provided on the inner wall of the grinding chamber 102. 15, a grinding rotor 16 is provided in the grinding chamber 102, and the grinding rotor 16 is of a narrow upper and wide lower structure, and cooperates with the grinding liner 15 to realize the grinding operation. A rotating shaft 17 is longitudinally provided at the center of the bottom end of the grinding rotor 16, and the lower end of the rotating shaft 17 passes through the bottom end of the crushing bin 11 and is driven to rotate by a rotating motor 18 installed at the bottom end of the crushing bin 11; a mixing frame 19 and a steam heating component 2 are provided in the pretreatment chamber 103, and the mixing frame 19 includes a scraper rod 191 and a stirring rod 192. The scraper rod 191 is of a U-shaped structure, and the center of the scraper rod 191 is fixedly arranged on the rotating shaft 17. The bottom end and both sides of the scraper rod 191 are arranged in contact with the inner side wall of the lower end of the pretreatment chamber 103, so that the scraper rod 191 can discharge the spun yarn into the discharge pipe 13 when it rotates, and a stirring rod 192 is longitudinally arranged on the scraper rod 191. The stirring rod 192 can fully heat the spun yarn to ensure uniform heating.

[0047] like Figure 3-4As shown, the steam heating assembly 2 includes a gas transmission ring pipe 21, a positioning bracket 3822, and a heat conduction pipe 23. The gas transmission ring pipe 21 is in a circular ring shape. The positioning bracket 3822 is arranged on the gas transmission ring pipe 21. The positioning bracket 3822 is arranged horizontally. The positioning bracket 3822 is fixedly connected to both ends of the gas transmission ring pipe 21. The ends of the positioning bracket 3822 are fixedly connected to the inner wall of the crushing bin 11. A collar is arranged at the center of the positioning bracket 3822. The collar is sleeved on the rotating shaft 17 and is rotatably connected to the rotating shaft 17 through a bearing. The positioning bracket 3822 can play a role in positioning the rotating shaft 17; one end of the gas transmission ring pipe 21 is connected to An air inlet pipe 211 is connected, and the air inlet pipe 211 horizontally penetrates the side wall of the crushing bin 11 and is connected to the steam source. A plurality of heat-conducting pipes 23 are evenly distributed at the bottom of the air supply ring pipe 21. The heat-conducting pipes 23 are all longitudinally arranged and staggered with the stirring rod 192. A plurality of air outlet holes 231 are provided at the lower end of the heat-conducting pipe 23, and an outer sleeve 24 is threadedly connected to the lower end of the heat-conducting pipe 23. A plurality of through holes 241 are provided on the upper surface of the outer sleeve 24, and a baffle 242 is provided on the outer wall of the outer sleeve 24 at each through hole 241, and the lower end of the baffle 242 is opened to allow steam to be transported downward and prevent the spun yarn from entering the through hole 241.

[0048] like Figure 5As shown, the extraction device 3 includes an extraction tank 31 and a precipitation tank 32, wherein the upper end of one side of the extraction tank 31 is connected to the feeding pipe opening of the screw feeder 131, the extraction tank 31 is arranged above the precipitation tank 32, the bottom of the extraction tank 31 is connected to the top of the precipitation tank 32 through a longitudinally arranged connecting pipe 33, so that the extraction tank 31 is connected to the precipitation tank 32, and a switch valve 331 is arranged at the lower end of the connecting pipe 33; a spiral heat-conducting coil 34 is arranged in the inner cavity of the extraction tank 31, and the heat-conducting coil 34 is used to circulate heat-conducting oil or steam, the inlet end and the outlet end of the heat-conducting coil 34 pass through the side wall of the extraction tank 31 and are connected to the heat-conducting source, a liquid inlet pipe 35 is arranged on one side of the top of the extraction tank 31, and the liquid inlet pipe 35 is connected to the composite solvent delivery pipe, a stirring shaft 36 is arranged in the extraction tank 31, and a stirring blade 362 is arranged on the stirring shaft 36, and the upper end of the stirring shaft 36 is driven to rotate by a stirring motor 37 installed on the top of the extraction tank 31 The lower end of the stirring shaft 36 extends into the connecting pipe 33 and is provided with a spiral auger 361, and the lower end of the stirring shaft 36 is positioned by a positioning bracket 3822 installed at the lower end of the inner cavity of the extraction tank 31. During the mixing and stirring process in the extraction tank 31, the switch valve 331 is in a closed state, the stirring shaft 36 rotates forward and drives the spiral auger 361 to rise and transport, so as to prevent the material from settling in the connecting pipe 33, and the spiral auger 361 transports the material upward to cooperate with the stirring blade 362, so that the material mixing can be more uniform. After the mixing is completed, the switch valve 331 is opened, the stirring shaft 36 is reversed, and the spiral auger 361 transports the mixed mixed material downward to the sedimentation tank 32; a lifting and extraction device 4 is provided on one side of the upper end of the sedimentation tank 32, and the lifting and extraction device 4 is connected to the inlet end of the filtering device 5 through a pipeline, and a drainage pipe 321 is provided at the bottom of the sedimentation tank 32, and the drainage pipe 321 is used to remove tailings.

[0049] like Figure 6-7As shown, the lifting and extracting device 4 includes a servo motor 41, a fixed sleeve 42, a lifting tube 43, a rotating sleeve 44, and a filter head 45. The servo motor 41 is arranged on one side of the top of the sedimentation tank 32 through a bracket, and the output shaft of the servo motor 41 longitudinally penetrates the top of the sedimentation tank 32 and is connected to a driving gear 411; the fixed sleeve 42 is longitudinally penetrated and arranged on one side of the top of the sedimentation tank 32, and a slide groove 421 is longitudinally opened on the inner wall of the fixed sleeve 42, and a lifting tube 43 is arranged in the fixed sleeve. The filter head 45 is detachably arranged at the lower end of the lifting tube 43, and a spiral guide groove 432 is arranged on the outer wall of the lifting tube 43 from top to bottom. A slider 431 for cooperating with the slide groove 421 is arranged on the outer wall of the top of the lifting tube 43 to realize the sliding connection between the lifting tube 43 and the fixed sleeve; A rotating sleeve 44 is rotatably connected to the bottom end of the fixed sleeve, and the inner wall of the rotating sleeve 44 is fitted with the outer wall of the lifting tube 43, and a guide block 441 is provided on the inner wall of the rotating sleeve 44, and the guide block 441 is embedded in the spiral guide groove 432 provided on the lifting tube 43. A circle of gear blocks 442 is provided on the outer wall of the rotating sleeve 44, and the rotating sleeve 44 is meshed with the driving gear 411 through the gear blocks 442, so that the servo motor 41 drives the rotating sleeve 44 to rotate through the driving gear 411 and drives the lifting tube 43 to rise and fall with the cooperation of the guide block 441 and the spiral guide groove 432, so that the lifting tube 43 uses the filter head 45 to extract the mixed oil, and an observation port 322 is provided on one side of the sedimentation tank 32 for observing the horizontal position of the precipitated sand, so as to control the descending position of the lifting tube 43.

[0050] The filter head 45 includes a base 451 and a filter cover 452. A stepped groove that is plugged into each other is provided between the top edge of the base 451 and the bottom edge of the filter cover 452. The base 451 is set to be conically contracted so as to be immersed in a mixed oil with high viscosity. A threaded groove 4511 is provided at the center of the top of the base 451. The threaded groove 4511 is threadedly connected to the bottom end of the lifting tube 43. A plurality of suction ports 434 are provided on the side wall of the lower end of the lifting tube 43. The filter cover 452 is in a conical structure. A filter screen 4521 is provided on the conical surface of the filter cover 452. A sleeve 4522 is provided at the top of the filter cover 452. The sleeve 4522 is sleeved on the lifting tube 43. A circle of limiting rings 433 is provided on the side wall of the lower end of the lifting tube 43. The limiting rings 433 abut against the top of the sleeve 4522 for limiting.

[0051] like Figure 8As shown, the filtering device 5 includes a filter tank 51, an oil inlet pipe 511 is provided on the upper side wall of the filter tank 51, and an oil inlet port 512 is opened on the inner wall of the filter tank 51 at the position of the oil inlet pipe 511; an oil discharge pipe 513 is provided at the center of the bottom end of the filter tube, and the upper end of the oil discharge pipe 513 vertically penetrates the bottom of the filter tank 51 and enters the filter tank 51, and the filter tank 51 is provided with a fixed filter bucket 52, a movable filter bucket 53, and a guide plate 54 from top to bottom, and the guide plate 54 is located above the oil discharge pipe 513, the guide plate 54 is in a round bucket shape, and the lower end is opened, the upper side wall of the guide plate 54 is fixedly connected to the inner wall of the filter tube, the inner cavity of the filter tank 51 is located below the guide plate 54 to form a filter material bin 56, and a discharge door 561 is provided on the lower side wall of the filter tank 51 for removing filter material.

[0052] The fixed filter bucket 52 and the movable filter bucket 53 are both in the shape of a round bucket. A plurality of filter holes 521 are provided on the conical side walls of the fixed filter bucket 52 and the movable filter bucket 53. The upper end of the fixed filter bucket 52 is fixedly connected to the inner wall of the filter tank 51. A connecting seat 522 is provided at the center of the lower end of the fixed filter bucket 52. A mounting hole 5221 is provided at the center of the connecting seat 522. A hollow tube 57 is longitudinally penetrated in the mounting hole 5221. The hollow tube 57 is rotatably connected to the connecting seat 522 through a bearing. The upper end of the hollow tube 57 is provided with a plurality of liquid inlet holes 571, the horizontal position of the liquid inlet holes 571 is not lower than the horizontal position of the top of the connecting seat 522, the top of the hollow tube 57 is connected to a driving shaft 573, the upper end of the driving shaft 573 is driven to rotate by a driving motor 58 installed on the top of the filter tank 51, the bottom end of the hollow tube 57 is opened and embedded in the oil drain pipe 513, the oil drain pipe 513 is provided with a support frame 572, the support frame 572 is in an "I"-shaped structure and is horizontally arranged in the oil drain pipe 513, supporting The two ends of the support frame 572 are fixedly connected to the inner wall of the oil drain pipe 513, the center of the support frame 572 is rotatably connected to the lower end of the hollow tube 57 through a bearing, and the support frame 572 is elastically connected to the telescopic tube 514 through an elastic support member, and the elastic support member includes a guide rod 5141 and a spring 5142, the guide rod 5141 is fixedly arranged on both sides of the bottom of the telescopic tube 514, the lower end of the guide rod 5141 longitudinally penetrates the support frame 572 and is slidably connected thereto, and the spring 5142 is sleeved on the upper end of the guide rod 5141 and is used to adjust the telescopic tube The bottom of 514 is supported so that the upper edge of the telescopic tube 514 is pressed against the lower opening of the guide plate 54, and a guide groove is longitudinally opened on the outer wall of the telescopic tube 514. A guide strip matched with the guide groove is provided on the inner wall of the upper end of the oil drain pipe 513, so that the telescopic tube 514 and the oil drain pipe 513 are longitudinally slidably connected. The top end of the telescopic tube 514 extends out of the oil drain pipe 513 and presses against the lower opening of the guide plate 54, so as to close the filter bin 56. A first opening 5143 is provided on the inner side of the top end of the telescopic tube 514.

[0053] The movable filter bucket 53 is longitudinally slidably arranged in the filter tank 51, and a second opening 5331 is provided at the center of the lower end of the movable filter bucket 53. The lower end of the hollow tube 57 is provided with an external thread. The lower end of the hollow tube 57 is threadedly connected with a lifting seat 55, and the lifting seat 55 is lifted and lowered in cooperation with the first opening 5143 or the second opening 5331 under the rotation of the hollow tube 57. When the lifting seat 55 rises, it drives the movable filter bucket 53 to rise, so that the movable filter bucket 53 and the fixed filter bucket 52 cooperate to squeeze and filter the mixed oil. When the lifting seat 55 descends, it presses downward against the telescopic tube 514 to realize the opening of the filter bin 56 and the discharge of impurities from the filter material.

[0054] A circle of annular seats 531 are provided at the upper edge of the movable filter bucket 53. The outer wall of the annular seat 531 is arranged in contact with the inner wall of the filter tank 51 to prevent the mixed oil from flowing downward along the inner wall of the tank body to the guide plate 54. At least two grooves 532 are opened on the outer wall of the annular seat 531. A slide rail 515 is slidably provided in the groove 532 through a sliding block. The slide rail 515 is located in the groove 532 and is longitudinally arranged on the inner wall of the filter tank 51. The upper end of the slide rail 515 extends to the fixed filter bucket 52, and the lowest position of the annular seat 531 on the slide rail 515 is lower than the position of the oil inlet 512, so that the mixed oil entering the filter tank 51 can fall into the movable filter bucket 53; a circular seat 533 is provided at the lower end opening position of the movable filter bucket 53. The circular seat 533 is located above the telescopic tube 514. A second opening 5331 is arranged on the inner side of the circular seat 533, and a lifting seat 55 is arranged in the second opening 5331.

[0055] like Figure 9-11As shown, the lifting seat 55 is sleeved on the hollow tube 57 and threadedly connected to the hollow tube 57. The lifting seat 55 includes a support portion 551 and a positioning portion 552. The length and width of the support portion 551 are larger than the length and width of the positioning portion 552, and the length and width of the support portion 551 are smaller than the size of the opening at the lower end of the guide plate 54. There are two positioning portions 552, which are respectively arranged at the upper and lower ends of the support portion 551, and the cross-sections of the two positioning portions 552 are polygonal structures and are respectively adapted to the size and shape of the first through hole 5143 and the second through hole 5331, so that the first through hole 5143 and the second through hole 5331 limit the rotation of the lifting seat 55, realize the rotation of the hollow tube 57 and drive the lifting seat 55 to rise and fall, and when the lifting seat 55 is in the middle position of the annular seat 533 and the telescopic tube 514, the positioning portions 552 at both ends of the lifting seat 55 are simultaneously located in the first through hole 5143 and the second through hole 5331 to ensure that the lifting seat 55 can be normally lifted and lowered. When the lifting seat 55 rises, the support portion 551 supports the annular seat 533 upward and drives the movable filter bucket 53 to rise, so that the movable filter bucket 53 cooperates with the fixed filter bucket 52 to squeeze and filter the mixed liquid with higher viscosity to improve the filtering efficiency, and a accommodating groove for accommodating the top of the lifting seat 55 is provided at the bottom of the connecting seat 522; when the lifting seat 55 descends, the support portion 551 presses the telescopic tube 514 downward and drives the telescopic tube 514 to descend, so that the filter material can fall into the filter material bin 56.

[0056] The upper and lower side walls of the support portion 551 are inclined and matched with the bottom of the annular seat 533 and the top of the telescopic tube 514. The inclined surface structure can prevent the filter material from being retained on the support portion 551 and the telescopic tube 514 and causing material jamming.

[0057] In order to improve the impurity removal efficiency, a vibration motor 59 may be installed on the side wall of the filter tank 51 to apply vibration force, so that the filter materials on the movable filter bucket 53 and the fixed filter bucket 52 can slide down quickly when the filter materials are removed.

[0058] The distillation device 6 includes a distillation kettle 61, a heating spacer 62 is provided at the lower end of the distillation kettle 61, one side of the distillation kettle 61 is connected to the oil discharge pipe 513, an exhaust pipe 64 is provided at the top of the distillation kettle 61 for discharging the gaseous composite solvent, and an oil outlet pipe 63 is provided at the bottom of the distillation kettle for discharging asphalt heavy oil.

[0059] A production method for continuous production equipment used for extracting heavy oil from asphalt rock, the method comprising the following steps:

[0060] Step 1: Add the asphalt rock into the crushing device 1, the asphalt rock is crushed and ground into fine sand, the fine sand is then softened by high temperature mixing and then transported to the extraction device 3;

[0061] Step 2: The fine yarn is subjected to high-temperature mixing treatment with the composite solvent in the extraction tank 31 to form a mixed material. The composition of the composite solvent is: petroleum ether 24.2 - 26 wt.%, n-heptane 14.5 - 16 wt.%, and solvent naphtha No. 120 as the balance;

[0062] Step 3: Open the switch valve 331 to allow the mixed material to flow into the precipitation tank 32 for precipitation, separating the mixed oil from the tailings. The lifting extraction device 4 extracts the mixed oil at the upper end of the mixed material and transports it to the filtering device 5;

[0063] Step 4: The mixed oil in the filtering tank 51 is subjected to extrusion filtration through the cooperation of the movable filtering hopper 53 and the fixed filtering hopper 52. The filtered mixed oil is pumped to the distillation kettle 61 through the drain pipe 513. The tailings remaining on the movable filtering hopper 53 and the fixed filtering hopper 52 are discharged into the filter material bin 56 under the action of the vibration motor 59;

[0064] Step 5: The mixed oil is heated to 100 - 120 °C in the distillation kettle 61, and under the condition of controlling the vacuum degree to be 2 - 3 KPa, the composite solvent is transformed into a gaseous state and output, and finally the asphalt heavy oil is left.

[0065] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A continuous production device for extracting heavy oil from asphalt rock, comprising a crushing device, an extraction device, a filtering device, and a distillation device, wherein the outlet of the crushing device is connected to the inlet of the extraction device, the outlet of the extraction device is connected to the inlet of the filtering device, and the outlet of the filtering device is connected to the inlet of the distillation device; It is characterized in that The filter device comprises a filter tank, an oil inlet pipe is provided on the side wall of the upper end of the filter tank, and an oil inlet port is provided on the inner wall of the filter tank at the position of the oil inlet pipe; an oil discharge pipe is provided at the center of the bottom end of the filter pipe, and the upper end of the oil discharge pipe vertically penetrates the bottom of the filter tank upward and enters the filter tank. A fixed filter bucket, a movable filter bucket and a guide plate are arranged in the filter tank from top to bottom. The guide plate is located above the oil discharge pipe, the guide plate is in a round bucket shape, and the lower end is opened. The inner cavity of the filter tank is located below the guide plate to form a filter material bin; the fixed filter bucket and the movable filter bucket are both in a round bucket shape, and a plurality of filter holes are provided on the conical side walls of the fixed filter bucket and the movable filter bucket, wherein the upper end of the fixed filter bucket is fixedly connected to the inner wall of the filter tank, and a connecting seat is provided at the center of the lower end of the fixed filter bucket, and a mounting hole is provided at the center of the connecting seat, and a hollow tube is longitudinally penetrated in the mounting hole, and the hollow tube is rotatably connected to the connecting seat through a bearing, and a plurality of liquid inlet holes are provided at the upper end of the hollow tube, and the horizontal position of the liquid inlet hole is not lower than the horizontal position of the top of the connecting seat. The top of the core tube is connected with a driving shaft, and the upper end of the driving shaft is driven to rotate by a driving motor installed on the top of the filter tank. The bottom end of the hollow tube is opened and embedded in the oil drain pipe. A support frame is provided in the oil drain pipe, and the center of the support frame is rotatably connected to the lower end of the hollow tube through a bearing. A telescopic tube is elastically connected to the support frame through an elastic support member, and the telescopic tube is longitudinally slidably connected to the oil drain pipe. The top of the telescopic tube extends out of the oil drain pipe and presses against the lower end opening of the guide plate. A first opening is provided on the inner side of the top of the telescopic tube; the movable filter bucket is longitudinally slidably arranged in the filter tank, and a second opening is provided at the center of the lower end of the movable filter bucket, the lower end of the hollow tube is provided with an external thread, and the lower end of the hollow tube is threadedly connected with a lifting seat, and the lifting seat is lifted and lowered in cooperation with the first opening or the second opening under the rotation of the hollow tube, and when the lifting seat rises, the movable filter bucket is driven to rise, so that the movable filter bucket cooperates with the fixed filter bucket to squeeze and filter the mixed oil, and when the lifting seat descends, it presses the telescopic tube downward to open the filter bin and discharge the filter material.

2. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 1, It is characterized in that The crushing device comprises a crushing bin, a feeding hopper is provided at the upper end of the crushing bin, the lower end of the crushing bin is contracted, and a discharge pipe is provided on one side of the lower end of the crushing bin, and the lower end of the discharge pipe is connected with a screw conveyor, and a crushing chamber, a grinding chamber and a pretreatment chamber are provided in the crushing bin from top to bottom in sequence, and two crushing rollers rotating in pairs of rollers are horizontally provided in the crushing chamber; a grinding liner is provided on the inner wall of the grinding chamber, and a grinding rotor is provided in the grinding chamber, and a rotating shaft is longitudinally provided at the center of the bottom end of the grinding rotor, and the lower end of the rotating shaft passes through the bottom end of the crushing bin and is driven to rotate by a rotating motor installed at the bottom end of the crushing bin; a mixing frame and a steam heating component are provided in the pretreatment chamber, and the mixing frame comprises a scraper rod and a stirring rod, and the scraper rod is a U-shaped structure, and the center of the scraper rod is fixedly arranged on the rotating shaft, and the bottom end and both sides of the scraper rod are arranged in contact with the inner side wall of the lower end of the pretreatment chamber, and the stirring rod is longitudinally arranged on the scraper rod.

3. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 2, It is characterized in that The steam heating component includes an air delivery ring pipe, a positioning bracket, and a heat conduction pipe. The air delivery ring pipe is in a circular ring shape. The positioning bracket is arranged on the air delivery ring pipe. The positioning bracket is arranged horizontally. The positioning bracket is fixedly connected to both ends of the air delivery ring pipe. The ends of both ends of the positioning bracket are fixedly connected to the inner wall of the crushing bin. A collar is arranged in the center of the positioning bracket. The collar is sleeved on the rotating shaft and is rotatably connected to the rotating shaft through a bearing. One end of the air delivery ring pipe is connected to an air inlet pipe, which horizontally penetrates the side wall of the crushing bin and is connected to the steam source. A plurality of heat conduction pipes are evenly distributed at the bottom of the air delivery ring pipe. The heat conduction pipes are all arranged longitudinally and staggered with the stirring rod. A plurality of air outlet holes are opened at the lower end of the heat conduction pipe, and an outer sleeve is detachably connected to the lower end of the heat conduction pipe. A plurality of through holes are opened on the upper surface of the outer sleeve, and a baffle is arranged on the outer wall of the outer sleeve at each through hole, and the lower end of the baffle is opened.

4. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 1, It is characterized in that The extraction device comprises an extraction tank and a precipitation tank, wherein the upper end of one side of the extraction tank is connected to the feeding pipe opening of the screw feeder, the extraction tank is arranged above the precipitation tank, the bottom of the extraction tank is connected to the top of the precipitation tank through a longitudinally arranged connecting pipe, so that the extraction tank and the precipitation tank are connected, and a switch valve is arranged at the lower end of the connecting pipe; a spiral heat-conducting coil is arranged in the inner cavity of the extraction tank, a liquid inlet pipe is arranged on one side of the top of the extraction tank, the liquid inlet pipe is connected to the composite solvent delivery pipe, a stirring shaft is arranged in the extraction tank, a stirring blade is arranged on the stirring shaft, the upper end of the stirring shaft is driven to rotate by a stirring motor installed on the top of the extraction tank, the lower end of the stirring shaft extends into the connecting pipe and is provided with a spiral auger, and the lower end of the stirring shaft is positioned by a positioning bracket installed at the lower end of the inner cavity of the extraction tank; a lifting and extracting device is arranged on one side of the upper end of the precipitation tank, the lifting and extracting device is connected to the inlet end of the filtering device through a pipeline, and a drainage pipe is arranged at the bottom of the precipitation tank.

5. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 4, It is characterized in that The lifting and extraction device comprises a servo motor, a fixed sleeve, a lifting tube, a rotating sleeve, and a filter head. The servo motor is arranged on one side of the top of the sedimentation tank through a bracket, and the output shaft of the servo motor vertically penetrates the top of the sedimentation tank and is connected to a driving gear; the fixed sleeve is longitudinally penetrated and arranged on one side of the top of the sedimentation tank, a sliding groove is longitudinally opened on the inner wall of the fixed sleeve, a lifting tube is arranged in the fixed sleeve, and the filter head is detachably arranged at the lower end of the lifting tube, a spiral guide groove is arranged from top to bottom on the outer wall of the lifting tube, and a sliding block for cooperating with the sliding groove is arranged on the outer wall of the top of the lifting tube to realize the sliding connection between the lifting tube and the fixed sleeve; the bottom end of the fixed sleeve is rotatably connected with a rotating sleeve, and a guide block is arranged on the inner wall of the rotating sleeve, and the guide block is embedded in the spiral guide groove arranged on the lifting tube, and a circle of gear blocks is arranged on the outer wall of the rotating sleeve, and the rotating sleeve is meshed with the driving gear through the gear block, so that the servo motor drives the rotating sleeve to rotate through the driving gear and drives the lifting tube to rise and fall under the cooperation of the guide block and the spiral guide groove.

6. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 5, It is characterized in that The filter head includes a base and a filter cover, a stepped groove that plugs into each other is provided between the top edge of the base and the bottom edge of the filter cover, the base is conically contracted, a threaded groove is provided at the center of the top end of the base, the threaded groove is threadedly connected to the bottom end of the lifting tube, and a plurality of suction ports are provided on the side wall of the lower end of the lifting tube; the filter cover is a conical structure, a filter screen is provided on the conical surface of the filter cover, a sleeve is provided at the top of the filter cover, the sleeve is provided on the lifting tube, and a circle of limiting rings is provided on the side wall of the lower end of the lifting tube, and the limiting rings are pressed against the top of the sleeve for limiting.

7. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 1, It is characterized in that A circle of annular seats are arranged at the upper edge of the movable filter bucket, and the outer wall of the annular seat is fitted with the inner wall of the filter tank. At least two grooves are opened on the outer wall of the annular seat, and a slide rail is arranged in the groove through a sliding block. The slide rail is located in the groove and is longitudinally arranged on the inner wall of the filter tank, and the lowest position of the annular seat on the slide rail is lower than the position of the oil inlet; a circular ring seat is arranged at the opening position of the lower end of the movable filter bucket, and the second through port is arranged on the inner side of the circular ring seat, and the lifting seat is arranged in the second through port, and the lifting seat is sleeved on the hollow tube and is threadedly connected to the hollow tube. The lifting seat It includes a support portion and a positioning portion, the length and width of the support portion are larger than those of the positioning portion, there are two positioning portions which are respectively arranged at the upper and lower ends of the support portion, and the cross-sections of the two positioning portions are polygonal structures and are respectively adapted to the size and shape of the first through opening and the second through opening, so that the first through opening and the second through opening limit the rotation of the lifting seat, realize the rotation of the hollow tube and drive the lifting seat to rise and fall, when the lifting seat rises, the support portion supports the annular seat upward and drives the movable filter bucket to rise, and when the lifting seat descends, the support portion presses the telescopic tube downward and drives the telescopic tube to descend.

8. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 7, It is characterized in that The elastic support member includes a guide rod and a spring. The guide rod is fixedly arranged on both sides of the bottom of the telescopic tube. The lower end of the guide rod longitudinally penetrates the support frame and is slidably connected thereto. The spring is sleeved on the upper end of the guide rod and is used to support the bottom of the telescopic tube so that the upper end edge of the telescopic tube is pressed against the lower end opening of the guide plate.

9. The continuous production equipment for extracting heavy oil from asphalt rock according to claim 1, It is characterized in that The distillation device comprises a distillation kettle, the lower end of which is sleeved with a heating spacer, one side of the distillation kettle is connected to the oil discharge pipe, the top end of the distillation kettle is provided with an exhaust pipe, and the bottom end is provided with an oil outlet pipe.

10. The production method of the continuous production equipment for extracting heavy oil from asphalt rock according to any one of claims 1 to 9, It is characterized in that The steps include: Step 1: Add the asphalt rock to the crushing device, the asphalt rock is crushed and ground into fine sand, the fine sand is softened by high temperature mixing, and then transported to the extraction device; Step 2: The spun yarn is subjected to high temperature mixing treatment by a composite solvent in an extraction tank to form a mixed material; Step 3: Open the switch valve to allow the mixed material to flow into the sedimentation tank for sedimentation, so that the mixed oil and tailings are separated, and the lifting extraction device extracts the mixed oil at the upper end of the mixed material and transports it to the filtering device; Step 4: The mixed oil in the filter tank is squeezed and filtered through the movable filter bucket and the fixed filter bucket, and the filtered mixed oil is pumped into the distillation kettle through the oil discharge pipe, and the tailings remaining on the movable filter bucket and the fixed filter bucket are discharged into the filter material bin under the action of the vibration motor; Step 5: The mixed oil is heated to 100-120°C in a distillation kettle and the vacuum is controlled at 2-3KPa, so that the composite solvent is converted into gas and output, leaving the asphalt heavy oil.

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