CN112048966A - Device and method for recovering asphalt in waste asphalt pavement material - Google Patents
Device and method for recovering asphalt in waste asphalt pavement material Download PDFInfo
- Publication number
- CN112048966A CN112048966A CN202010878767.XA CN202010878767A CN112048966A CN 112048966 A CN112048966 A CN 112048966A CN 202010878767 A CN202010878767 A CN 202010878767A CN 112048966 A CN112048966 A CN 112048966A
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- tank
- asphalt
- separation
- outlet
- asphalt pavement
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/08—Apparatus for transporting and heating or melting asphalt, bitumen, tar, or the like
Abstract
The invention provides a device and a method for recovering asphalt in waste asphalt pavement materials, which comprises a separation cleaning tank, wherein the top of the separation cleaning tank is connected with a soaking tank, a filtration separation cone is arranged in the separation cleaning tank, a solid outlet is arranged on the separation cleaning tank on one side of the top of the filtration separation cone, a drying and conveying device is arranged at the solid outlet, a crusher is arranged at the outlet end of the drying and conveying device, the outlet of the crusher is connected with a dissolution separation tank, an oil bath heating jacket is arranged on the outer side of the dissolution separation tank, a sealing cover is arranged on the top of the dissolution separation tank, a motor is arranged on the top of the sealing cover, a rotating shaft is fixed at the output end of the motor, a filter frame is fixed on the rotating shaft, a solvent inlet is arranged at the upper end of one side of the dissolution separation tank, the solvent inlet is connected with a solvent tank, a, The evaporating tank is connected with the storage tank. The invention is convenient for recycling the asphalt material and is beneficial to reducing the waste of resources.
Description
Technical Field
The invention belongs to the field of asphalt, and particularly relates to a device and a method for recovering asphalt in a waste asphalt pavement material.
Background
The asphalt pavement is a very widely used pavement structure, is widely applied to urban roads, highways, high-grade roads and the like, has good driving comfort and excellent service performance, and is obtained by heating and mixing crushed stone aggregates, mineral powder and asphalt materials in a certain proportion to obtain asphalt concrete and paving and rolling the asphalt concrete. However, after long-term use, due to the effects of oxidation, load and the like, the asphalt pavement is gradually damaged, and after reaching a certain degree, the damaged waste asphalt pavement needs to be milled and paved again, a large amount of waste asphalt pavement materials can be generated in the process, the waste asphalt pavement materials contain a large amount of asphalt and the like, the constructed waste asphalt pavement materials are usually randomly stacked or backfilled, so that the environment is polluted, and a large amount of waste of resources can be caused, and therefore, a device and a method for recovering the asphalt in the waste asphalt pavement materials which can solve the existing problems are urgently needed.
Disclosure of Invention
The invention aims to provide a device and a method for recovering asphalt in waste asphalt pavement materials, aiming at the defects of the prior art.
The invention provides the following technical scheme:
a recovery device for asphalt in waste asphalt pavement materials comprises a separation cleaning tank, wherein the top of the separation cleaning tank is connected with a soaking tank, a filtration separation cone is arranged in the separation cleaning tank, a solid outlet is arranged on the separation cleaning tank on one side of the top of the filtration separation cone, a drying and conveying device is arranged at the solid outlet, a crusher is arranged at the outlet end of the drying and conveying device, the outlet of the crusher is connected with a dissolution separation tank, an oil bath heating jacket is arranged on the outer side of the dissolution separation tank, a sealing cover is arranged on the top of the dissolution separation tank, a motor is arranged at the top of the sealing cover, a rotating shaft is fixed at the output end of the motor, a filter frame is fixed on the rotating shaft, a solvent inlet is arranged at the upper end of one side of the dissolution separation tank, the solvent inlet is connected with a solvent tank, and a steam outlet is arranged at the upper, the steam outlet is connected with the condenser, the condenser is connected with the solvent tank, the bottom of the dissolving and washing tank is provided with a liquid outlet, the liquid outlet is connected with the centrifuge, and the centrifuge is sequentially connected with the filtering device, the evaporating tank and the storage tank.
Preferably, a plurality of filtering holes are formed in the filtering and separating cone, a filtrate outlet is formed in the bottom of the separating and cleaning tank and located below the filtering and separating cone, and the filtrate outlet is connected with a filtrate storage tank.
Preferably, a cleaning ring pipe is arranged at the upper end of the side wall in the separation cleaning tank, a plurality of cleaning nozzles inclining downwards are arranged on the cleaning ring pipe, a filter screen is arranged in the filtrate storage tank, a cleaning pump is arranged on one side of the filtrate storage tank, and an outlet of the cleaning pump is connected with the cleaning ring pipe.
Preferably, the separation washing tank is provided with a feeding pipe at the top, and the feeding pipe extends to the inside of the separation washing tank.
Preferably, the drying and transporting device comprises a transporting belt and a drying cover, the drying cover covers the transporting belt, a plurality of hot air pipes are arranged in the drying cover, the hot air pipes are connected with a hot air blower, a plurality of hot air openings with downward openings are formed in the hot air pipes, and an exhaust pipe is arranged at the top of the drying cover.
Preferably, the evaporating tank is provided with a first outlet and a second outlet, the first outlet is connected with the condenser, and the second outlet is connected with the storage tank.
A recovery method based on a recovery device of asphalt in waste asphalt pavement materials comprises the following steps:
s1, placing the milling material of the waste asphalt pavement into a soaking tank filled with water for soaking until the dust on the surface is stripped from the asphalt pavement material;
s2, transferring the asphalt pavement material in the soaking tank to a separation cleaning tank, wherein the filtrate containing dust is filtered by a filtering separation cone, and the residual asphalt pavement material is primarily dried by a drying and conveying device and conveyed to a crusher for further crushing;
s3, conveying the crushed asphalt pavement material into a dissolving and separating tank, placing the asphalt pavement material into a filter frame, adding a solvent into the dissolving and separating tank, driving the filter frame to rotate by a motor, heating the dissolving and separating tank by using an oil bath, separating old asphalt from aggregate in the asphalt pavement material after a period of treatment, allowing mineral powder to enter a centrifuge along with an asphalt solution, allowing generated steam to flow out through a steam outlet, condensing the steam by a condenser and then recovering into a solvent tank, and leaving the aggregate in the filter frame for reuse after being taken out;
s4, centrifuging the asphalt solution containing the mineral powder by a centrifuge, further filtering the centrifuged asphalt solution by a filter device, then evaporating the filtered asphalt solution in an evaporating tank to further remove the solvent, and storing the asphalt after the solvent is removed in a storage tank.
The invention has the beneficial effects that:
the invention provides a device for recovering asphalt in waste asphalt pavement materials, which can recover asphalt from the asphalt pavement materials, is convenient for the recovery and reutilization of the asphalt materials and is beneficial to reducing the waste of resources; the separation cleaning tank can separate and clean the soaked asphalt pavement materials, wherein the filtering and separating cone can play a role in filtering and separating and is convenient for discharging solids; the dissolving and separating tank can drive the asphalt pavement materials in the filter frame to rotate by using the motor, meanwhile, the dissolving and separating tank is heated by using an oil bath, after a period of treatment, old asphalt and aggregate in the asphalt pavement materials are separated, and meanwhile, the dissolving and separating tank is also provided with the centrifugal machine and the filtering device, so that the recycling of the asphalt is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the separation purge tank of the present invention;
FIG. 3 is a schematic view of the structure of the dissolution separating tank of the present invention.
Labeled as: 1. a soaking tank; 2. separating and cleaning the tank; 21. a filtering separation cone; 211. a filtration pore; 22. a solids outlet; 23. a filtrate outlet; 24. a filtrate storage tank; 241. filtering with a screen; 25. a feed pipe; 26. cleaning a ring pipe; 27. cleaning the spray head; 28. cleaning the pump; 3. drying and conveying device; 31. a conveyor belt; 32. a drying cover; 321. a hot air pipe; 322. an exhaust duct; 4. a crusher; 5. a dissolution separation tank; 51. an oil bath heating jacket; 52. sealing the cover; 53. a motor; 54. a rotating shaft; 55. a filter frame; 56. a solvent inlet; 57. a steam outlet; 58. a liquid discharge port; 6. a solvent tank; 7. a condenser; 8. a centrifuge; 9. a filtration device; 10. an evaporator tank; 11. a storage tank.
Detailed Description
As shown in fig. 1 to 3, a recovery unit of interior pitch of old and useless bituminous paving material, wash jar 2 including the separation, the top that the separation was washd jar 2 is connected with soaking tank 1, it is equipped with filtration separation awl 21 in the separation is washd jar 2, be equipped with solid export 22 on the separation of filtration separation awl 21 top one side washing jar 2, solid export 22 department is equipped with stoving conveyer 3, stoving conveyer 3 is including transport area 31 and stoving cover 32, stoving cover 32 covers in transport area 31 top, be equipped with many hot-blast main 321 in the stoving cover 32, hot-blast main 321 links to each other with the air heater, be equipped with the decurrent hot-blast mouth of a plurality of openings on the hot-blast main 321, the top of stoving cover 32 is equipped with exhaust pipe 322.
Drying and transporting device 3's outlet end department is equipped with breaker 4, breaker 4's export links to each other with dissolving knockout drum 5, dissolving knockout drum 5's the outside is equipped with oil bath heating jacket 51, dissolving knockout drum 5's top is equipped with closing cap 52, motor 53 is installed at closing cap 52's top, motor 53's output is fixed with pivot 54, be fixed with filter frame 55 in the pivot 54, the upper end of dissolving knockout drum 5 one side is equipped with solvent inlet 56, solvent inlet 56 links to each other with solvent tank 6, the upper end of dissolving knockout drum 5 opposite side is equipped with steam outlet 57, steam outlet 57 links to each other with condenser 7, condenser 7 links to each other with solvent tank 6, the bottom of dissolving the washing jar is equipped with leakage fluid dram 58, leakage fluid dram 58 links to each other with centrifuge 8, centrifuge 8 in proper order with filter equipment 9, evaporating pot 10 and holding vessel 11 link to. The evaporator 10 is provided with a first outlet and a second outlet, the first outlet is connected with the condenser 7, and the second outlet is connected with the storage tank 11.
Be equipped with a plurality of filtration pores 211 on filtering separation awl 21, the bottom of separation washing jar 2 is equipped with filtrating export 23, filtrating export 23 is located the below of filtering separation awl 21, filtrating export 23 links to each other with filtrating storage tank 24, separation washing jar 2 top is equipped with inlet pipe 25, inlet pipe 25 extends to the inside of separation washing jar 2, the lateral wall upper end in the separation washing jar 2 is equipped with washs the ring pipe 26, be equipped with the decurrent washing shower nozzle 27 of a plurality of slopes on wasing the ring pipe 26, be equipped with filter screen 241 in the filtrating storage tank 24, one side of filtrating storage tank 24 is equipped with scavenging pump 28, the export and the washing ring pipe 26 of scavenging pump 28 link to each other.
A recovery method based on a recovery device of asphalt in waste asphalt pavement materials comprises the following steps:
s1, placing the milling material of the waste asphalt pavement into a soaking tank 1 filled with water for soaking until the dust on the surface is stripped from the asphalt pavement material;
s2, transferring the asphalt pavement material in the soaking tank 1 to a separation cleaning tank 2, wherein filtrate containing dust is filtered by a filtering and separating cone 21, and the residual asphalt pavement material is primarily dried by a drying and conveying device 3 and conveyed to a crusher 4 for further crushing;
s3, conveying the crushed asphalt pavement material into a dissolving and separating tank 5 to enable the asphalt pavement material to be placed in a filter frame 55, then adding a solvent into the dissolving and separating tank 5, driving the filter frame 55 to rotate by a motor 53, simultaneously heating the dissolving and separating tank 5 by using an oil bath, separating old asphalt and aggregate in the asphalt pavement material after a period of treatment, enabling mineral powder to enter a centrifuge 8 along with the asphalt solution, enabling generated steam to flow out through a steam outlet 57, condensing the steam by a condenser 7 and then recycling the steam into a solvent tank 6, and enabling the aggregate to remain in the filter frame 55 and be reused after being taken out;
s4, centrifuging the asphalt solution containing the mineral powder by a centrifuge 8, further filtering the centrifuged asphalt solution by a filter device 9, then evaporating the asphalt solution in an evaporation tank 10 to further remove the solvent, and storing the asphalt after the solvent is removed in a storage tank 11.
The invention provides a device for recovering asphalt in waste asphalt pavement materials, which can recover asphalt from the asphalt pavement materials, is convenient for the recovery and reutilization of the asphalt materials and is beneficial to reducing the waste of resources; the separation cleaning tank 2 can separate and clean the soaked asphalt pavement materials, wherein the filtering and separating cone 21 can play a role in filtering and separating and is convenient for discharging solids, a cleaning ring pipe 26 is arranged in the separation cleaning tank 2, a cleaning nozzle 27 is arranged on the cleaning ring pipe 26, and the asphalt pavement materials in the separation cleaning tank 2 can be further cleaned by using filtrate; the dissolving and separating tank 5 can drive the asphalt pavement materials in the filter frame 55 to rotate by using the motor 53, meanwhile, the dissolving and separating tank 5 is heated by using an oil bath, after a period of treatment, old asphalt and aggregate in the asphalt pavement materials are separated, and meanwhile, the dissolving and separating tank is also provided with the centrifuge 8 and the filtering device 9, so that the recycling of the asphalt is facilitated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A recovery device for asphalt in waste asphalt pavement materials is characterized by comprising a separation and cleaning tank, wherein the top of the separation and cleaning tank is connected with a soaking tank, a filtering and separating cone is arranged in the separation and cleaning tank, a solid outlet is arranged on the separation and cleaning tank on one side of the top of the filtering and separating cone, a drying and conveying device is arranged at the solid outlet, a crusher is arranged at the outlet end of the drying and conveying device, the outlet of the crusher is connected with a dissolution and separation tank, an oil bath heating jacket is arranged on the outer side of the dissolution and separation tank, a sealing cover is arranged at the top of the dissolution and separation tank, a motor is arranged at the top of the sealing cover, a rotating shaft is fixed at the output end of the motor, a filter frame is fixed on the rotating shaft, a solvent inlet is arranged at the upper end of one side of the dissolution and separation tank, the solvent inlet is connected with a solvent tank, the steam outlet is connected with the condenser, the condenser is connected with the solvent tank, the bottom of the dissolving and washing tank is provided with a liquid outlet, the liquid outlet is connected with the centrifuge, and the centrifuge is sequentially connected with the filtering device, the evaporating tank and the storage tank.
2. The recycling device for asphalt in waste asphalt pavement materials according to claim 1, wherein a plurality of filtering holes are formed in the filtering and separating cone, a filtrate outlet is formed in the bottom of the separating and cleaning tank, the filtrate outlet is located below the filtering and separating cone, and the filtrate outlet is connected with a filtrate storage tank.
3. The recycling device for asphalt in waste asphalt pavement materials according to claim 2, wherein a cleaning ring pipe is arranged at the upper end of the side wall in the separation cleaning tank, a plurality of cleaning nozzles inclining downwards are arranged on the cleaning ring pipe, a filter screen is arranged in the filtrate storage tank, a cleaning pump is arranged at one side of the filtrate storage tank, and the outlet of the cleaning pump is connected with the cleaning ring pipe.
4. The recycling device for asphalt in waste asphalt pavement materials according to claim 3, wherein a feeding pipe is arranged on the top of the separation cleaning tank and extends to the inside of the separation cleaning tank.
5. The recycling device of asphalt in waste asphalt pavement materials according to claim 1, wherein the drying and transporting device comprises a transporting belt and a drying cover, the drying cover is covered above the transporting belt, a plurality of hot air pipes are arranged in the drying cover, the hot air pipes are connected with a hot air blower, a plurality of hot air ports with downward openings are arranged on the hot air pipes, and an exhaust pipe is arranged at the top of the drying cover.
6. The recycling device for asphalt in waste asphalt pavement materials according to claim 1, wherein the evaporation tank is provided with a first outlet and a second outlet, the first outlet is connected with the condenser, and the second outlet is connected with the storage tank.
7. A method for recovering asphalt in the waste asphalt pavement material based on any one of claims 1 to 6, which is characterized by comprising the following steps:
s1, placing the milling material of the waste asphalt pavement into a soaking tank filled with water for soaking until the dust on the surface is stripped from the asphalt pavement material;
s2, transferring the asphalt pavement material in the soaking tank to a separation cleaning tank, wherein the filtrate containing dust is filtered by a filtering separation cone, and the residual asphalt pavement material is primarily dried by a drying and conveying device and conveyed to a crusher for further crushing;
s3, conveying the crushed asphalt pavement material into a dissolving and separating tank, placing the asphalt pavement material into a filter frame, adding a solvent into the dissolving and separating tank, driving the filter frame to rotate by a motor, heating the dissolving and separating tank by using an oil bath, separating old asphalt from aggregate in the asphalt pavement material after a period of treatment, allowing mineral powder to enter a centrifuge along with an asphalt solution, allowing generated steam to flow out through a steam outlet, condensing the steam by a condenser and then recovering into a solvent tank, and leaving the aggregate in the filter frame for reuse after being taken out;
s4, centrifuging the asphalt solution containing the mineral powder by a centrifuge, further filtering the centrifuged asphalt solution by a filter device, then evaporating the filtered asphalt solution in an evaporating tank to further remove the solvent, and storing the asphalt after the solvent is removed in a storage tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010878767.XA CN112048966B (en) | 2020-08-27 | 2020-08-27 | Device and method for recovering asphalt in waste asphalt pavement material |
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| CN202010878767.XA CN112048966B (en) | 2020-08-27 | 2020-08-27 | Device and method for recovering asphalt in waste asphalt pavement material |
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| CN112048966A true CN112048966A (en) | 2020-12-08 |
| CN112048966B CN112048966B (en) | 2021-12-31 |
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Cited By (4)
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| CN113650192A (en) * | 2021-08-10 | 2021-11-16 | 安徽茂诚路桥工程有限公司 | Pitch is recycled and is ground processing equipment |
| CN113699851A (en) * | 2021-09-14 | 2021-11-26 | 山东交通学院 | Waste asphalt pavement material crushing, screening and recycling system and screening and recycling method |
| CN113786669A (en) * | 2021-10-19 | 2021-12-14 | 长沙理工大学 | Waste road asphalt mixture oil-stone separation method |
| CN114130789A (en) * | 2021-11-13 | 2022-03-04 | 重庆义伦公路建设有限公司 | Waste asphalt reclaimed material separation equipment |
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Cited By (5)
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| CN113650192A (en) * | 2021-08-10 | 2021-11-16 | 安徽茂诚路桥工程有限公司 | Pitch is recycled and is ground processing equipment |
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| CN114130789A (en) * | 2021-11-13 | 2022-03-04 | 重庆义伦公路建设有限公司 | Waste asphalt reclaimed material separation equipment |
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| CN112048966B (en) | 2021-12-31 |
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