A waste road asphalt mixture separation system and method

Abstract

The present invention provides a waste road asphalt mixture separation system and method, which are heated and centrifuged in two cyclones, and the waste road asphalt mixture is preliminarily physically separated by a screen, and then the waste road asphalt mixture is chemically separated by an extracting liquid solvent, and the asphalt and aggregate separated from the oilstone are collected respectively. The extracting liquid solvent is a polar solvent, a non-polar solvent, or a mixed solvent of a polar solvent and a non-polar solvent. The waste road asphalt mixture oilstone separation method of the present invention combines physical separation with chemical separation according to the component properties of the asphalt, and fully reduces the residual rate of aggregate asphalt after separation.

Description

Technical Field

[0001] The present invention mainly relates to the technical field related to asphalt processing, and specifically relates to a system and method for separating waste road asphalt mixture. Background Art

[0002] Highway maintenance and repair will inevitably generate a lot of waste from the road surface. The asphalt and aggregate in these wastes have high utilization value. If they are directly disposed of by landfill, it will not only pollute the environment, but also waste resources. Realizing a larger proportion and higher quality of road solid waste resource utilization has become the key at present. The effective use of these wastes effectively solves the problems of land occupation, land pollution, water resource pollution, etc., and can also recycle asphalt and aggregate resources, bringing good economic benefits and environmental benefits.

[0003] There are three types of oil-stone separation technologies: physical separation, chemical separation and biological separation. Currently, the physical separation technology is relatively mature, but the residual rate of asphalt in the separated aggregate is relatively high; chemical separation reagents are highly volatile and toxic, which harms the environment. In addition, due to the high price of chemical reagents, the extract cannot be effectively recovered, which greatly increases the cost of the chemical separation process; biological separation is still in the laboratory stage and lacks certain applicability.

[0004] In summary, it is necessary to propose a high-quality, low-cost separation method and equipment. Summary of the invention

[0005] The present invention combines physical and chemical separation technologies to propose a high-quality, low-cost waste road asphalt mixture separation system and method, which realizes separation and extraction integration, and solves the problems of incomplete asphalt aggregate separation, complex overall process flow, high cost, environmental pollution, etc. in the prior art.

[0006] The specific technical solutions of the present invention are as follows:

[0007] According to one aspect of the present invention, a waste road asphalt mixture separation system is provided, in which the asphalt mixture is first subjected to a physical preliminary separation treatment of heating, centrifugation and vibration in a first cyclone, the asphalt after physical separation is collected, and the aggregate after physical separation is subjected to oil-stone chemical separation through an extract and sent to a second cyclone, and then the oil-stone separation extract, asphalt and aggregate are collected separately.

[0008] Furthermore, the extracting solution is a polar solvent or a non-polar solvent or a mixed solvent of a polar solvent and a non-polar solvent. Specifically, the extracting solution can be n-hexane, cyclohexane, n-heptane and petroleum ether solution or a mixture thereof.

[0009] Further, the system includes a first cyclone, a second cyclone, an asphalt storage tank, an extract storage tank, a linear propulsion assembly, a spray assembly, and a reaction device;

[0010] The first cyclone is used for physical separation of asphalt mixture, the linear propulsion assembly is used for conveying aggregate after physical separation, the spraying assembly is used for spraying extract on aggregate, the aggregate, separated asphalt and extract enter the reaction device together, and then are sent to the second cyclone for sufficient chemical reaction. The second cyclone separates the aggregate, asphalt and extract. The asphalt storage tank is used for collecting the asphalt separated by the first cyclone and the second cyclone, and the extract storage tank is used for collecting the extract separated by the second cyclone and providing the extract to the spraying assembly.

[0011] Further, a first heat preservation tube is arranged outside the first cyclone, a first heater is arranged inside the first heat preservation tube, a first feed port is arranged at the upper part of the first cyclone, a first vibrating screen is arranged at the lower discharge port, a first overflow pipe is arranged on the first cyclone, a plurality of first overflow blades are arranged on the surface of the first overflow pipe inside the first cyclone, and the first overflow pipe outside the first cyclone is connected to the asphalt storage tank;

[0012] A second heat preservation tube is arranged outside the second cyclone, a second heater is arranged inside the second heat preservation tube, a second feed port is arranged at the upper part of the second cyclone, a second vibrating screen is arranged at the lower discharge port, a second overflow pipe is arranged on the second cyclone, a plurality of second overflow blades are arranged on the surface of the second overflow pipe inside the second cyclone, and the second overflow pipe outside the second cyclone is connected to the asphalt storage tank;

[0013] An asphalt pressure-controlled pump is installed at the asphalt storage tank.

[0014] Furthermore, the liquid inlet pipe above the extraction liquid storage tank is provided with an extraction liquid pressure-controlled pump and a condenser, and is connected to the upper part of the second overflow pipe of the second cyclone, and the lower part of the extraction liquid storage tank is connected to the spraying assembly through the liquid outlet pipe.

[0015] Furthermore, the linear propulsion assembly includes a chain guide and a plurality of rollers, a rotating motor is installed on one side of the chain guide, each roller shaft is hinged by a chain, and a collecting device is arranged under the guide.

[0016] Furthermore, the collecting device comprises a trapezoidal slope, a heating tube is provided on one side of the left side of the trapezoidal slope, and a vibrating device is installed on the other side, and the bottom end of the collecting device is at the same height as the top end of the reaction device.

[0017] Furthermore, the reaction device includes a reaction box, a top plate of the reaction box is provided with an elastic cylinder, the top plate is opened and closed by controlling the elastic cylinder, an opening is provided on the side of the reaction box to connect to the air compressor, and an opening is provided to connect to the feed port of the second cyclone through a transmission pipe.

[0018] Furthermore, the spray assembly includes a water storage pump and a high-pressure nozzle connected to the water storage pump, the high-pressure nozzle is embedded in the spray box, the bottom of the spray box is connected to the linear propulsion assembly, and the water outlet pump is connected to the extraction liquid storage tank.

[0019] According to another aspect of the present invention, a separation method based on the above waste road asphalt mixture separation system is provided, comprising the following steps:

[0020] Step S1, turning on the first heater of the first cyclone to preheat it, and when the temperature reaches 200° C., conveying the crushed waste asphalt mixture to the first feed port of the first cyclone at a certain initial velocity;

[0021] Step S2, adjusting the first vibrating screen according to the vibration frequency of 20 khz-60 khz, and keeping the first vibrating screen in a vibrating state during the entire oilstone separation process;

[0022] Step S3, turning on the asphalt pressure control pump to extract the physically separated asphalt into the asphalt storage tank;

[0023] Step S4, controlling the aggregate separator below the first vibrating screen to open, and the aggregate and asphalt roll down from the discharge port below to the linear propulsion assembly. When the aggregate and asphalt reach the linear propulsion assembly, the heating pipe and the vibrating device of the collecting device are kept in an open state at all times;

[0024] Step S5, turning on the rotating motor, the chain guide starts to rotate and transmits the aggregate and asphalt to the spray box in the spray assembly;

[0025] Step S6, when the aggregate reaches the spraying box, the extract is controlled to be sprayed onto the surface of the aggregate from the extract storage tank through the water storage pump and the high-pressure nozzle, and the asphalt and the extract solvent flow into the reaction device along the trapezoidal slope, and the aggregate also falls into the reaction device through the roller;

[0026] Step S7, turning on the second heater of the second cyclone to preheat it to 70°C-120°C;

[0027] Step S8, controlling the air compressor of the reaction device to fully compress the air so that the aggregate mixture and the extract flow into the second feed port of the second cyclone through the transmission pipe;

[0028] Step S9, turning on the extraction liquid pressure control pump and the condenser, the secondary separated asphalt enters the asphalt storage tank along the liquid inlet pipe, and the extraction liquid vapor is condensed to form a liquid and flows into the extraction liquid storage tank;

[0029] Step S10, controlling the aggregate separator below the second vibrating screen to open, and the separated aggregate automatically slides into the aggregate collection box.

[0030] Beneficial effects of the present invention:

[0031] 1. Compared with the existing oil-stone separation method, the system and method of the present invention realizes the oil-stone separation of waste road asphalt mixture with high efficiency and low cost. It combines physical separation with chemical separation and utilizes the characteristics of the cyclone to effectively collect aggregate and asphalt liquid;

[0032] When the system is in use, the cyclone in the preheated state can efficiently complete the initial separation according to the fluidity of the asphalt. The remaining aggregates are concentrated above the vibrating screen and heated by vibration. A part of the remaining asphalt that has not been completely separated flows to the roller on the linear propulsion assembly and then leaks into the collection box. After the physical separation is completed, chemical reagents are sprayed on the mixture for full reaction, and further separated in the second cyclone. The structural design layout of the entire system is reasonable and the process is simple.

[0033] 2. In the system and method of the present invention, the chemical reagent heated in the second cyclone is condensed and recovered into the extract storage tank through the condenser. Controlling the inlet and outlet valves can effectively recycle the chemical reagent, reducing the process cost. The entire device has good air tightness and avoids environmental pollution to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of a waste road asphalt mixture separation system.

[0035] Figure 2 This is a schematic diagram of a cyclone in a waste road asphalt mixture separation system.

[0036] Figure 3 This is a schematic diagram of a reaction device for a waste road asphalt mixture separation system.

[0037] Figure 4 This is a schematic diagram of a collection device for a waste road asphalt mixture separation system.

[0038] Figure 5 This is a schematic diagram of a linear propulsion component of a waste road asphalt mixture separation system.

[0039] Figure 6 A schematic diagram of a spraying component of a waste road asphalt mixture separation system.

[0040] Figure 7 This is the waste road asphalt mixture after crushing treatment in the embodiment of the present invention.

[0041] Figure 8 The aggregate is separated by the method for separating oilstone from waste road asphalt mixture according to the embodiment of the present invention.

[0042] In the figure, 1-first cyclone, 2-second cyclone, 3-extract storage tank, 4-asphalt storage tank, 5-spraying assembly, 6-reaction device, 7-linear propulsion assembly, 8-collecting device, 101-first insulation cylinder, 102-first heater, 103-first vibration screen, 105-first overflow blade, 106-first level overflow pipe, 107-first level overflow pipe, 108-first feed port, 109-first liquid outlet valve, 110-first liquid outlet pipe, 201-second insulation cylinder, 202-second heater, 203-second vibration screen, 205-second overflow blade, 206-second level Overflow pipe, 207-second secondary overflow pipe, 208-second feed port, 209-second liquid outlet valve, 210-second liquid outlet pipe, 301-extracted liquid outlet valve, 302-extracted liquid pressure-controlled pump, 303-condenser, 304-extracted liquid inlet and outlet pipes, 401-asphalt outlet valve, 402-asphalt pressure-controlled pump, 501-water storage pump, 502-high-pressure nozzle, 503-spraying box, 601-transmission pipe, 602-air compressor, 603-elastic cylinder, 701-drum, 702-chain guide, 703-rotating motor, 801-heating pipe, 802-vibration device, 803-trapezoidal slope. DETAILED DESCRIPTION

[0043] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0044] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0045] refer to Figure 1-Figure 6 , which is a schematic diagram of the relevant structure of the waste road asphalt mixture separation system provided by an embodiment of the present invention.

[0046] refer to Figure 1, Figure 2 As shown, the system includes a first cyclone 1 and a second cyclone 2. A rectangular first heat preservation tube 101 and a second heat preservation tube 201 are respectively arranged outside the first cyclone 1 and the second cyclone 2. A first heater 102 is placed inside the first heat preservation tube 101 and a second heater 202 is placed inside the second heat preservation tube 201. A first feed port 108 is arranged on the top of the first cyclone 2 and a second feed port 208 is arranged on the top of the second cyclone 2. The top end of the first cyclone 1 is connected to the asphalt storage tank 4 through the first liquid outlet valve 109, the first liquid outlet pipe 110 and the asphalt pressure control pump 402; the top end of the second cyclone 2 is connected to the asphalt storage tank 4 through the second liquid outlet valve 209, the second liquid outlet pipe 210, the asphalt pressure control pump 402, and the top end of the second cyclone 2 is connected to the extract storage tank 3 through the second liquid outlet valve 209, the extract pressure control pump 302 and the condenser 303.

[0047] The first cyclone 1 is provided with a first and second overflow pipe 107 on the outside, and the second cyclone 2 is provided with a second and second overflow pipe 207 on the outside. The bottom of the first and second overflow pipe 107 is connected to the top of the first and first overflow pipe 106, and the bottom of the second and second overflow pipe 207 is connected to the top of the second and first overflow pipe 206. A plurality of first overflow blades 105 are provided on the surface of the first and first overflow pipe 106, and a plurality of second overflow blades 205 are provided on the surface of the second and first overflow pipe 206. A first vibrating screen 103 is provided at the discharge port below the first cyclone 1, and a second vibrating screen 203 is provided at the discharge port below the second cyclone 2. An aggregate automatic separator is provided on one side of the vibrating screens. A linear propulsion assembly 7 and a spray assembly 5 are provided below the first vibrating screen 203.

[0048] refer to Figure 5 As shown, the linear propulsion assembly 7 includes two parallel chain guides 702 , on which a plurality of rotating rollers 701 are arranged. One end of the roller shaft is connected to the next roller shaft through a chain, and a rotating motor 703 is arranged at one end for controlling the rotation of the roller 701 .

[0049] refer to Figure 6 As shown, the spray assembly 5 is mainly composed of a high-pressure nozzle 502 and a spray box 503 connected to the extraction liquid outlet pipe 304 and the water storage pump 501. The high-pressure nozzle 502 is embedded above the spray box 503, and the bottom of the spray box 503 is connected to the linear propulsion assembly 7 by bolts.

[0050] refer to Figure 3 As shown, the reaction device 6 is mainly composed of a rectangular storage box with openings on two sides and a spring cylinder 603 installed on one side. The side opening is connected to an air compressor 602 to increase the air pressure in the closed storage box. The rear opening is directly connected to the second feed port 208 of the second cyclone 2 through a transmission pipe 601.

[0051] refer to Figure 4 As shown, the collecting device 8 is connected to the chain guide rail 702 by bolts through a trapezoidal slope 803 with one side higher than the other side, a heating tube 801 is arranged at one end, and a vibration device 802 is arranged at the other end.

[0052] The main working principle of the system is as follows: the first heater 102 of the first cyclone 1 is turned on in advance for heating. When the temperature reaches 200°C, the crushed aggregate enters the first feed port 108 at a certain initial velocity. Under the action of the cyclone, large solid particles slide along the inner wall of the cyclone to the first vibrating screen 103 at the bottom. The flowing asphalt enters the first overflow pipe 106 and the first and second overflow pipes 107. The asphalt pressure control pump 402 is turned on to allow the initially separated asphalt to flow into the asphalt storage tank 4. The aggregate below flows into the roller 70 of the linear propulsion assembly 7 after vibration. 1, the heating pipe 801 on the collecting device 8 is turned on, so that the asphalt is always in a flowing state. With the rotation of the rotating motor 703, the chain 702 and the roller 701 drive the aggregate to roll together, and then enter the spraying assembly 5. The extract in the extract storage tank 3 enters the water storage pump 501 through the extract outlet valve 301 and is sprayed by the high-pressure nozzle 502, and is evenly sprayed on the surface of the aggregate to make it fully react. Then the aggregate enters the separation device 6, and the separated asphalt and extract enter the collecting device 8 from the gap of the roller 701 and enter the separation device 6 along the trapezoidal slope 803. The air compressor 602 is turned on to increase the air pressure so that the aggregate, asphalt and the extract enter the second feed port 208 of the second cyclone 2 with a certain kinetic energy. The second heater 202 is turned on to control the temperature at 70°C-120°C. The aggregate after physical and chemical separation reaches the second vibrating screen 203 at the discharge port along the inner wall of the cyclone. The asphalt and the extract enter the second primary overflow pipe 206 together and enter the second secondary overflow pipe 207 along the second primary overflow pipe 206. The condenser 303 is turned on. The extract has a low boiling point and becomes gaseous and becomes liquid through condensation. It flows into the extract storage tank 3 along the extract inlet and outlet pipes 304. The remaining asphalt enters the asphalt storage tank 4 along the second outlet valve 209 and the second outlet pipe 210, completing the physical and chemical separation of asphalt aggregates.

[0053] Example 1

[0054] This embodiment provides a method for separating waste road asphalt mixture, which mainly includes the following steps:

[0055] (1) Crushing the waste road asphalt mixture to be processed, such as Figure 7As shown, the crushed waste road asphalt mixture is transported to the first feed port 108 of the first cyclone 1. The first heater 102 of the first cyclone 1 is turned on in advance for heating. When the temperature reaches 200°C, under the action of the first cyclone 1, large solid particles slide along the inner wall of the cyclone to the first vibrating screen 103 at the bottom, and the flowing asphalt enters the first overflow pipe 106 and the first and second overflow pipes 107.

[0056] (2) The first vibrating screen 103 is adjusted to a vibration frequency of 40 KHz, so that the first vibrating screen 103 is always in a vibrating state during the entire oil-stone separation process.

[0057] (3) Turn on the asphalt pressure control pump 402 to allow the initially separated asphalt to flow into the asphalt storage tank 4, and the aggregate below flows into the roller 701 of the linear propulsion assembly 7 after being vibrated.

[0058] (4) Turn on the heating tube 801 on the collecting device 8 until the temperature reaches 200° C., so that the asphalt is always in a flowing state. As the rotating motor 703 rotates, the chain guide 702 and the roller 701 drive the aggregate to roll together and then enter the spraying assembly 5.

[0059] (5) The extract outlet valve 301 is opened to allow the n-heptane solvent in the extract storage tank 3 to enter the water storage pump 501 and be sprayed out by the high-pressure nozzle 502, and evenly sprayed on the surface of the aggregate until the ratio of the waste asphalt mixture to n-heptane is 1:3. The extract outlet valve 301 is closed and the aggregate enters the reaction device 6. The separated asphalt and extract enter the collection device 8 from the gap of the drum 701 and enter the reaction device 6 along the trapezoidal slope 803.

[0060] (6) Aggregates, separated asphalt and solvent enter the separation device 6 together. After fully reacting for 70 minutes, the air compressor 602 is turned on to increase the air pressure so that the aggregates, asphalt and the extract enter the second feed port 208 of the second cyclone 2 together with a certain kinetic energy.

[0061] (7) Turn on the second heater 202 so that the temperature is controlled at 70°C. The aggregate after physical and chemical separation reacts for 1 hour under the extraction effect of the second cyclone 2, the extracting liquid, the vibration effect of the second vibrating screen 203 and the heating effect of the second heater 2020. The residual asphalt enters the second-level overflow pipe 206 together with the extracting liquid, and enters the second-level overflow pipe 207 along the second-level overflow pipe 206.

[0062] (8) Open the condenser 303, the extract vapor is cooled and becomes liquid, and the liquid extract flows into the extract storage tank 3 through the extract inlet and outlet pipes 304. Raise the temperature of the second heater 202 to 130°C and heat for 1.5 hours until the extract is recovered. Close the extract inlet and outlet valves 301, the condenser 303 and the extract pressure control pump 302.

[0063] (9) Open the second liquid outlet valve 209 and the asphalt inlet valve 401 of the second cyclone 2, and use the asphalt pressure control pump 402 to transport the asphalt to the asphalt storage tank 4 to complete the physical-chemical separation of asphalt aggregates. Figure 8 shown.

[0064] The asphalt recovery rate in this example is 96.97%, and the asphalt residue in the aggregate is 0.11%.

[0065] Example 2

[0066] This embodiment provides a method for separating waste road asphalt mixture, which has the following changes compared with the reference document 1:

[0067] The extract in (5) is a mixed solvent of n-hexane and cyclohexane with a volume ratio of 1:5;

[0068] (6) The reaction time was changed to 75 min;

[0069] (7) The temperature of the second heater is changed to 40°C;

[0070] In (8), the temperature of the second heater was changed to 85°C.

[0071] The recovery rate of asphalt in this example is 95.75%, and the residual asphalt in the aggregate is 0.14%.

[0072] Example 3

[0073] This embodiment provides a method for separating waste road asphalt mixture, which has the following changes compared with the reference document 1:

[0074] The extract in (5) is petroleum ether solvent, and the ratio of solvent to waste road asphalt mixture is 1:3;

[0075] (6) The reaction time was changed to 80 min;

[0076] (7) The temperature of the middle heater is changed to 120°C;

[0077] The rest are the same as in Example 1.

[0078] The recovery rate of asphalt in this example is 94.02%, and the residual asphalt in the aggregate is 0.20%.

Claims

1. A waste road asphalt mixture separation system, characterized in that: The system includes a first cyclone, a second cyclone, an asphalt storage tank, an extract storage tank, a linear propulsion assembly, a spray assembly, and a reaction device; The first cyclone is used for physical separation of asphalt mixture, the linear propulsion assembly is used for conveying aggregate after physical separation, the spray assembly is used for spraying extract on aggregate, the aggregate, the separated asphalt and the extract enter the reaction device together for full chemical reaction and then are sent to the second cyclone, the second cyclone separates the aggregate, asphalt and the extract, the asphalt storage tank is used for collecting the asphalt separated by the first cyclone and the second cyclone, the extract storage tank is used for collecting the extract separated by the second cyclone and providing the extract to the spray assembly; A first heat preservation tube is arranged outside the first cyclone, a first heater is arranged inside the first heat preservation tube, a first feed port is arranged at the upper part of the first cyclone, a first vibrating screen is arranged at the lower discharge port, a first overflow pipe is arranged on the first cyclone, a plurality of first overflow blades are arranged on the surface of the first overflow pipe inside the first cyclone, and the first overflow pipe outside the first cyclone is connected to the asphalt storage tank; A second heat preservation tube is arranged outside the second cyclone, a second heater is arranged inside the second heat preservation tube, a second feed port is arranged at the upper part of the second cyclone, a second vibrating screen is arranged at the lower discharge port, a second overflow pipe is arranged on the second cyclone, a plurality of second overflow blades are arranged on the surface of the second overflow pipe inside the second cyclone, and the second overflow pipe outside the second cyclone is connected to the asphalt storage tank; An asphalt pressure control pump is installed at the asphalt storage tank; The asphalt mixture is first subjected to physical preliminary separation treatment by heating, centrifugation and vibration in the first cyclone. The asphalt after physical separation is collected, and the aggregate after physical separation is sent to the second cyclone for oil-stone chemical separation through the extract. Then the oil-stone separation extract, asphalt and aggregate are collected separately.

2. The waste road asphalt mixture separation system according to claim 1 is characterized in that: The extracting solution is a polar solvent or a non-polar solvent or a mixed solvent of a polar solvent and a non-polar solvent.

3. The waste road asphalt mixture separation system according to claim 1 is characterized in that: The liquid inlet pipe above the extraction liquid storage tank is provided with an extraction liquid pressure-controlled pump and a condenser, and is connected to the upper part of the second overflow pipe of the second cyclone. The lower part of the extraction liquid storage tank is connected to the spraying assembly through the liquid outlet pipe.

4. The waste road asphalt mixture separation system according to claim 1 is characterized in that: The linear propulsion assembly includes a chain guide rail and a plurality of rollers. A rotating motor is installed on one side of the chain guide rail. Each roller shaft is hinged by a chain. A collecting device is arranged under the guide rail.

5. The waste road asphalt mixture separation system according to claim 4 is characterized in that: The collecting device comprises a trapezoidal slope, a heating tube is arranged on one side of the left side of the trapezoidal slope, and a vibrating device is arranged on the other side, and the bottom end of the collecting device is at the same height as the top end of the reaction device.

6. The waste road asphalt mixture separation system according to claim 1 is characterized in that: The reaction device comprises a reaction box, a top plate of the reaction box is provided with an elastic cylinder, the top plate is opened and closed by controlling the elastic cylinder, an opening is provided on the side of the reaction box to connect with the air compressor, and the opening is provided to connect with the feed port of the second cyclone through a transmission pipe.

7. The waste road asphalt mixture separation system according to claim 1 is characterized in that: The spray assembly includes a water storage pump and a high-pressure nozzle connected to the water storage pump. The high-pressure nozzle is embedded in the spray box. The bottom of the spray box is connected to the linear propulsion assembly. The water outlet pump is connected to the extraction liquid storage tank.

8. A separation method based on the waste road asphalt mixture separation system according to any one of claims 1 to 7, characterized in that: The steps include: Step S1, turning on the first heater of the first cyclone to preheat it, and when the temperature reaches 200° C., conveying the crushed waste asphalt mixture to the first feed port of the first cyclone at a certain initial velocity; Step S2, adjusting the first vibrating screen according to the vibration frequency of 20khz-60khz, and keeping the first vibrating screen in a vibrating state during the entire oilstone separation process; Step S3, turning on the asphalt pressure control pump to extract the physically separated asphalt into the asphalt storage tank; Step S4, controlling the aggregate separator below the first vibrating screen to open, and the aggregate and asphalt roll down from the discharge port below to the linear propulsion assembly. When the aggregate and asphalt reach the linear propulsion assembly, the heating pipe and the vibrating device of the collecting device are kept in an open state at all times; Step S5, turning on the rotating motor, the chain guide starts to rotate and transmits the aggregate and asphalt to the spray box in the spray assembly; Step S6, when the aggregate reaches the spraying box, the extract is controlled to be sprayed onto the surface of the aggregate from the extract storage tank through the water storage pump and the high-pressure nozzle, and the asphalt and the extract solvent flow into the reaction device along the trapezoidal slope, and the aggregate also falls into the reaction device through the roller; Step S7, turning on the second heater of the second cyclone to preheat it to 70°C-120°C; Step S8, controlling the air compressor of the reaction device to fully compress the air so that the aggregate mixture and the extract flow into the second feed port of the second cyclone through the transmission pipe; Step S9, turning on the extraction liquid pressure control pump and the condenser, the secondary separated asphalt enters the asphalt storage tank along the liquid inlet pipe, and the extraction liquid vapor is condensed to form a liquid and flows into the extraction liquid storage tank; Step S10, controlling the aggregate separator below the second vibrating screen to open, and the separated aggregate automatically slides into the aggregate collection box.

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