KR101128685B1 - Recycle drier in apparatus of regenerating waste ascon - Google Patents

Abstract

PURPOSE: A regeneration dryer system of a waste ascon recycling plant is provided to produce recycled ascon with good quality and to prevent a fire and coating of asphalt powder on the interior of a regeneration dryer. CONSTITUTION: A regeneration dryer system of a waste ascon recycling plant comprises a cylinder type dryer body(60), a nozzle(38), a burner(37), a fireproof wall(62), a heat concentration induction pipe(64), and a sieve type bucket(66). The cylinder type dryer body is rotated on a bearing and receives waste ascon. The nozzle is formed on the front side of the dryer body and has a length corresponding to the flame diffusion length of the burner. The burner is installed on the leading end of the nozzle. The fireproof wall is formed around the interior of the nozzle and heated by the burner to provide indirect heat of 140°C or more to the inside of the dryer body. The heat concentration induction pipe is serially installed in the core part of the dryer body communicated to the nozzle and has a heat release hole(68b) so that the heat from the nozzle is guided concentrically to the core part. The sieve type bucket is arranged on the interior of the dryer body in order to draw up waste ascon.

Description

Recycling Dryer Device in Waste Ascon Recycling Equipment {RECYCLE DRIER IN APPARATUS OF REGENERATING WASTE ASCON}

The present invention relates to a facility for recycling waste ascon, and more particularly, to a problem in the regeneration dryer apparatus in a facility for reprocessing waste of asphalt concrete (referred to as "waste ascon") used for paving roads and the like. The present invention relates to an apparatus for improving performance.

Ascon refers to asphalt concrete, which refers to a mixture of asphalt and sand, gravel, dust, and additives, and is heated, and is widely used in road paving and parking lots. Generally, about 900kg of asphalt concrete, about 900 ~ 950kg of aggregates (gravel, sand, dust, fila) and about 30 ~ 50kg of asphalt are contained. If it is collected by the industrial waste is classified as industrial waste is disposed of or disposed as waste.

Currently, some developed countries recycle 80-90% of the waste ascon, and Korea is strongly recommending recycling of the waste ascon. In addition, the waste ascon recycling policy has been supplemented and strengthened systematically, and progress has been made in terms of facilities for recycling waste ascon.

However, recycled ascon facilities that can recycle waste ascon still expose many problems.

Regenerated ascon facilities are implemented in various forms, including room temperature regenerated ascon equipment and heated regenerated ascon equipment. Currently, it is common in Korea to produce regenerated ascons by using a heated regenerated ascon equipment.

Heat regeneration ascon equipment is a facility to obtain regenerated ascon by heating and melting the separately collected waste ascon with a burner and a dryer and injecting the melted waste ascon into a mixer which is a new ascon mixing unit and mixing new aggregate and additive together. Are classified into a top type and a skip type.

An example of the prior art of the top-type heat regeneration ascon facility is the Korean Patent Application Publication No. 10-2011-0037443, "Method of manufacturing odor preventing regeneration ascon".

However, in the reclaimed ascon facility of the prior art, the pulverized waste ascon stored in the cold bin, which is a reservoir, transfers and supplies the waste ascon to the upper regeneration dryer through a conveying means such as a conveyor and a hot elevator. In the process of heating and melting using the burner inside the regeneration dryer, the flame of the burner can directly transform the asphalt powder and the stone powder mixed with the waste ascon, or the high temperature of the burner can be directly applied to the asphalt powder which is the oil mass. There are many risks and frequent use of waste ascon as recycled aggregates.

In consideration of the risk of fire, if it is heated to a relatively low temperature without maintaining the proper temperature inside the regeneration dryer, the equipment is safe from the danger of fire, but the thick asphalt film inside the dryer gets hard as the waste ascon is not properly heated and melted. The coating phenomenon is stuck and the regeneration is impossible. Therefore, there is a disadvantage that takes a lot of work time and cost to remove it from time to time.

Therefore, an object of the present invention is to provide a recycled ascon plant in waste ascon regeneration facility to prevent the risk of fire while producing a high-quality recycled ascon through the regeneration dryer, which is a heating furnace for heating and melting the aggregate of crushed waste ascon. To provide a regenerative dryer device.

Another object of the present invention is to provide a regeneration dryer apparatus in a waste ascon regeneration facility to prevent the coating phenomenon of the asphalt powder inside the regeneration dryer to facilitate maintenance.

In accordance with the above object, the present invention is a regenerated dryer apparatus in waste ascon regeneration equipment, comprising a cylindrical dryer main body 60 which is mounted on a bearing bearing and rotates, and a burner flame is spread in front of the dryer main body 60. The fireball 38 having a length corresponding to the distance is formed in communication with the burner 38, and the burner 37 is configured to be installed, but the inner wall of the fireball 38 is formed around the inner wall of the fireball wall 62 to form a thick burner. The thermal power of (37) heats the fireproof wall (62) of the crater (38) so that the hotter heat is introduced into the dryer body (60) into which waste ascon is introduced, so that high indirect heat of 140 ° C or higher into the dryer body (60). And to be provided.

In constructing the regeneration dryer apparatus described above, the burner 37 is provided by installing one or more heat concentrating pipes 64 having a plurality of heat dissipation holes 68b formed in the core portion of the dryer main body 60 communicated with the crater 38. Thermal power released from the) is transferred to the crater 38 and the heat heated through the crater 38 is configured to be guided to the core by the heat induction pipe 64, the inner peripheral surface of the dryer main body 60 is rotated It is characterized in that the mesh-shaped bucket (66) which can spread the waste ascon into the array formed.

The heat intensive induction pipe 64 may be composed of a heat dissipation tube 68 in which a plurality of heat dissipation holes 68b are formed, and a conical inlet tube 68a extending in front of the heat dissipation tube 68. As another example, a conical inflow pipe 68a having a short pipe 69 at its rear side can be configured.

In the construction of the regeneration dryer apparatus of the present invention, a waste heat recovery pipe 70 having a return fan 71 is provided in communication between the outlet of the dryer main body 60 and the inlet of the crater 38, and the crater 38 At the end of the return heat of the waste heat recovery pipe (70) located at the beginning of the), the guide plate 73 for guiding the return wind pressure by the return fan 71 to piggyback the mainstream wind pressure of the burner blower 37a is installed. It is done.

In the present invention, the fire power applied to the inside of the regeneration dryer, which is a heating furnace for heating and melting crushed waste ascon, is used as an indirect heating method to prevent the risk of fire as well as an indirect heating method. By maintaining a high quality recycled asphalt, it is possible to prevent the coating phenomenon of the asphalt inside the regenerated dryer to facilitate the maintenance of the regenerated dryer.

1 is a schematic configuration diagram of a tower type heating regeneration ascon facility according to an embodiment of the present invention;
Figure 2 is a procedure showing a process of producing recycled ascon by recycling the waste ascon using the ascon facility of Figure 1,
3 is a cross-sectional configuration of the main part of the recycled asphalt concrete plant according to an embodiment of the present invention,
4 is a perspective view of a part of the regeneration dryer of the present invention;
5 is a side cross-sectional view of the regeneration dryer of FIG.
6 is a cross-sectional configuration diagram of the regeneration dryer of FIG.
Figure 7 is a front cross-sectional view showing a heat induction pipe modified in the present invention regenerated dryer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a top type regenerated heating ascon facility according to an embodiment of the present invention, and FIG. 2 is a procedure showing a process of producing recycled ascon by recycling waste ascon using the regenerated heating ascon facility of FIG. 1. It is also.

Recycled ascon produced by recycling waste ascon is produced by mixing recycled aggregate from waste ascon and new aggregate and additives together, and the dust generated when manufacturing new ascon with recycled aggregate is recycled in the present invention. Equipped.

A general operation of the top type reclaimed ascon facility (A) of the present invention will be described below with reference to FIGS. 1 and 2.

1) Production flow description in new Ascon plant 100

The new aggregate, which is selectively stacked in the cold bin (1), which is a new aggregate storage, is heated by a belt feeder (2), a horizontal conveyor (3), and an inclined conveyor (4). 5) is heated to a constant temperature as the heat of the burner (6) and then aboard the hot elevator (7) (8) (9) to rise and then the vibrating screen (10), which is a device for sorting fresh aggregates by size Passed through is temporarily stored in the hot bin (11). Aggregate temporarily stored in the hot bin 11 is weighed in a scale hopper 12 based on production data input into the input device by the manufacturer and then fed into the mixer 13, and the new aggregate in the mixer 13. When mixed with new asphalt, it becomes new asphalt.

2) Dust Recycling Flow Description

Dust generated in the new ascon plant 100 is collected in the lower bag via a bag filter 26, which is a dust collector, by the suction force of the air blower 27. The dust collected in this way is a dust scale, which is a dust silo 18 and a metering device, through a screw 14, 15 in the bag, a dust elevator 16, and a two way damper 17. After passing through the dust bin (dust bin) 19 is provided to the mixer 13 is recycled.

3) Description of Production Flow in Reclaimed Ascon Plant 200

The waste ascons sorted and stacked in the cold bin 30, which is a storage of the waste ascons, are lifted through the belt feeder 31, the horizontal conveyor 32, and the inclined conveyor 33. It is transferred to the dryer 36, which is a heating device, after the ride up 35, and is indirectly heated to a temperature of 140 ° C. or higher as the heat of the burner 37 and the fireball 38, and then temporarily stored in an ascon silo 39. The waste ascon temporarily stored in the ascon silo 39 is weighed in an ascon scale hopper 40 based on the production data of the manufacturer's request entered through the input device and then transferred to a conveyer 41 such as a conveyor or trolly. It is input to the mixer 13 through).

In the mixer 13, the recycled aggregate provided from the recycled ascon plant provided by the recycled asphalt concrete plant 200 and the recycled aggregate provided from the recycled asphalt concrete plant 100 together with additives introduced from the outside to produce recycled asphalt concrete, The recycled ascon produced in 13) is loaded into the truck and shipped.

The flow of the main part in the recycled asphalt concrete plant 200 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3.

3 is a cross-sectional view of the main part of the recycled asphalt concrete plant 200 according to an embodiment of the present invention, the heating power applied to the inside of the regeneration dryer 36, which is a heating furnace for heating and melting the crushed waste ascon. Indirect heating method is used to prevent the risk of fire, and indirect heating method also maintains the internal temperature of the regeneration dryer 36 at 140 ° C or higher, so that the waste ascon is ideally melted to obtain high quality recycled ascon. At the same time, the asphalt coating phenomenon in the regeneration dryer 36 is prevented, and thus, the main body has a structure that facilitates maintenance of the regeneration dryer 36.

In order to obtain high quality recycled ascon by melting and melting the waste ascon in the regeneration dryer 36, the internal temperature of the regeneration dryer 36 must be maintained at 140 ° C. or higher. However, the waste ascon that is put into the regeneration dryer 36 is a residue of volatile oil evaporated from petroleum crude oil, and contains black or dark brown solid and semi-solid oil mass asphalt powder. Because of the high risk of fire, heating is usually performed only at temperatures in the range of 110 to 120 ° C.

Since the fire occurs when the asphalt powder contained in the waste ascon directly touches the flame emitted from the burner, the present invention implements to heat and melt the waste ascon as indirect heat inside the dryer 36.

The regeneration dryer 36 in the regeneration ascon plant 200 of the present invention has a cylindrical dryer body 60 which is mounted on a bearing bearing and rotates, as shown in FIG. 3, in front of the dryer body 60. A burner 38 having a length corresponding to the spreading distance of the burner flame is formed to communicate with each other, and a burner 37 is provided in front of the burner 38.

As described above, the fireball 38 is formed in a length such that the flame of the burner 37 does not directly contact the waste ascon in the dryer main body 60, and at the same time, the fireproof wall 62 has a thickness around the inner circumferential surface of the fireball 38. Formed so that the thermal power of the burner 37 heats the fireproof wall 62 of the crater 38 so that the hotter heat is introduced into the dryer main body 60 so that high indirect heat of 140 ° C. or higher is provided into the dryer main body 60. Will be.

The fire wall 62 formed on the inner circumferential surface of the crater 38 is preferably formed as a castable (heat-resistant brick) or a heat-resistant brick having excellent fire resistance and durability, which not only withstands high heat of the burner 37 In addition, it has excellent thermal insulation, which prevents heat from leaking to the outside, thereby preventing heat loss and reducing fuel consumption. In particular, even a small amount of fuel can quickly increase the temperature inside the dryer body 60 in a short time. Because there is.

When the waste ascon is turned inside the dryer main body 60, which is a heating furnace of the regeneration dryer 36 of the present invention, and is heated and melted by the internal hot air, the flame emanated from the burner 37 does not directly contact the waste ascon and the fireball 38 It is configured to transfer the heated indirect heat through), so it can be safely sent as high temperature heat to 140 ℃, which is the proper heating temperature for melting waste ascon, so that it is not indirect fire or indirect fire that can cause fire. Waste ascon is melted satisfactorily through heat to obtain high quality recycled aggregate, and high heat of 140 ° C. or higher is applied to the dryer main body 60 so that the dryer main body 60 is subjected to low heat of 110 to 120 ° C. The asphalt coating phenomenon formed on the inner side is also prevented in advance.

Furthermore, in the present invention, in the construction of the dryer main body 60, the burner 37 is provided by installing one or more heat intensive induction pipes 64 in which a plurality of heat dissipation holes 68b are formed in the core portion of the cylindrical dryer main body 60. Thermal power discharged from) is transmitted to the crater 38, and the heat heated through the crater 38 can be guided to the core of the dryer body 60, and the waste ascon is poured into the inner circumferential surface of the dryer body 60 that is rotated. Meshed buckets 66 are provided that allow raising.

Referring to the configuration of the heat concentrating pipe 64 in more detail with reference to Figure 4, the heat-dissipating pipe body 68 formed in the perforated is located in the center of the dryer body 60 in the dryer body 60 through the front and rear connecting rods A cone-shaped inlet pipe 68a extends in front and is fixed and communicates with the crater 38, and is configured such that a long heat-exhaust hole 68b is formed in a zigzag shape around the outer surface of the heat dissipating body 68. Thus, the hot hot air further heated in the crater 38 is concentrated through the heat induction pipe 64 to the core shaft of the dryer main body 60.

The hot hot air further heated while passing through the crater 38 concentrates the waste ascon supplied in the dryer main body 60 to the central extension axis by the heat intensive induction pipe 64, and proceeds rearward, It is discharged out of the heat induction pipe 64 through the discharge perforations 68b.

The heat intensive induction pipe 64 for allowing the high temperature hot air to be concentratedly delivered can be restrained from being discharged to the outside even when the flame does not go away even though the fireball 38 is somewhat removed. It is possible to prevent the indirect high temperature hot air emitted through the heat discharging perforations 38b because the fire power of the burner 37 does not directly come into contact with the asphalt powder contained in the waste ascon. It will raise enough to 140 degreeC or more which is a suitable temperature to melt. In addition, the hot air of indirect heating also prevents the oxidation of asphalt contained in the waste ascon which is being transferred from the dryer body 60. The number and size of heat dissipation perforations 68b of the heat induction pipe 64 may be adjusted according to the flame extension length emitted from the burner 37.

The hot air flowing through the heat intensive induction pipe 64 located in the core shaft is sucked by the blower 27 in communication with the bag filter 26 of the new Ascon plant 100 together with the blower 37a of the burner 37. The flow toward the ascon silo 39 is formed, and the number of heat intensive induction pipes 64 is installed in series with one or more in consideration of the length of the dryer body 60 and the flow rate of the hot air.

3 shows an example in which two heat induction pipes 64 are installed in series in series, and in FIG. 6, a state in which only one heat induction pipe 64 is installed is shown as another example. 7 shows a modified example in which heat concentrating pipes 64 formed of cone-shaped inlet pipes 68a having end pipes 69 are spaced apart from each other.

Meanwhile, as shown in FIG. 5, the bucket 66 fixedly disposed on the inner circumferential surface of the rotatable dryer main body 60 may be formed in a lattice net form using metal rod rods such as reinforcing bars, and at the same time, it may spun waste ascon. It is formed in the form of a rake bent so that one side, it is configured to be arranged at regular intervals from the inlet to the outlet of the dryer body (60).

The bucket 66, which is rotated together by the rotation of the dryer body 60, filters out the unfused pieces of waste ascon to improve flow flowability, which makes the molten material stay at the bottom bottom and easily reaches the outlet without being entangled or blocked, yet Smelted ascon flakes that are not melted or less soluble do not fall between the grids of the grid bucket 66, but are floated in the bucket 66 (ie, after being screened), and then turned upwards to heat upward in hot air. Since it is poured to the (64) side, the waste ascon of the less melted pieces by the repeated operation of bucket tempering and dropping is agitated, sorted and crushed, and is heated again and melted completely to discharge high-quality recycled aggregate.

Ascon silo 39 is installed in the outlet of the regeneration dryer 36 of the present invention as described above.

Ascon silo (39) receives the recycled aggregate discharged as it is melted through the regeneration dryer (36), while temporarily storing the appropriate amount obtained through the metering of the lower ascon scale hopper (40) transfer means 41, such as a conveyor or trolley To the mixer (13). At the same time, waste heat, oil, dust, and odor generated during the process of heating and melting the waste ascon in the regeneration dryer 36 are returned to the burner 37 through the waste heat recovery pipe 70 to burn the burner 38. Induce it to burn in.

Return fan (71) is installed in the waste heat recovery pipe (70), and the return wind pressure by the return fan (71) is the burner blower at the end of the recirculation end of the waste heat recovery pipe (70) which is located at the beginning of the crater (38). A guide plate 73 is provided to guide the mainstream wind pressure of the burner blower 37a so as not to interfere with the mainstream wind pressure of 37a.

In addition, the ascon silo 39 is connected to the cyclone 76 through the exhaust pipe 72 and the flue 74, and the bag filter 26 is operated by the suction operation of the blower 27 constituting the dust collector connected to the cyclone 76. By collecting the dust, waste heat, oil, dust, and odors can be removed.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the claims and their equivalents.

The present invention can be used as a device for recycling recycled ascon to produce recycled ascon.

(36)-Regeneration Dryer (37)-Burner
(38)-Crater (39)-Ascon Silos
(60)-Dryer body (62)-Fireproof wall
(64)-Heat Concentration Pipe (66)-Bucket
(68)-heat dissipation body (68a)-inlet pipe
(68b)-heat exhaust hole (69)-tube
(70)-Waste Heat Recovery Pipe (71)-Return Fan
(72)-Exhaust Pipe (73)-Sign
(74)-Year
(100)-New Ash Ascon Plant (200)-Recycled Ascon Plant

Claims (5)

delete In the regeneration dryer device in the waste ascon regeneration facility,
A cylindrical dryer main body 60 is mounted on the bearing bearing and rotates, and in front of the dryer main body 60, a crater 38 having a length corresponding to the spreading distance of the burner flame is formed. The burner 37 is configured to be installed, but the inner circumferential surface of the crater 38 forms a fireproof wall 62 thick so that the fire power of the burner 37 heats the fireproof wall 62 of the crater 38 to be more hot. By allowing the hot air to flow into the dryer body 60 into which the waste ascon is introduced, high indirect heat of 140 ° C. or higher is provided into the dryer body 60, and the core portion of the dryer body 60 communicated with the crater 38. By installing one or more heat concentrating pipes 64 having a plurality of discharge holes 68b in series, the thermal power discharged from the burner 37 is transferred to the fireball 38, and the heat heated through the fireball 38 is induced. Centrally guided by the tube (64) And a mesh-shaped bucket (66) arranged to form waste ascon on the inner circumferential surface of the dryer main body (60) to be rotated.
The heat concentrating induction pipe (64) is composed of a heat dissipation tube (68) having a plurality of heat dissipation holes (68b), and a conical inlet tube (68a) extending in front of the heat dissipation tube (68). Regeneration dryer device in the waste ascon regeneration facility, characterized in that.
3. The regeneration dryer apparatus according to claim 2, wherein the heat intensive induction pipe (64) comprises a conical inflow pipe (68a) having a rear end pipe (69) at the rear.
In the regeneration dryer device in the waste ascon regeneration facility,
A cylindrical dryer main body 60 is mounted on the bearing bearing and rotates, and in front of the dryer main body 60, a crater 38 having a length corresponding to the spreading distance of the burner flame is formed. The burner 37 is configured to be installed, but the inner circumferential surface of the crater 38 forms a fireproof wall 62 thick so that the fire power of the burner 37 heats the fireproof wall 62 of the crater 38 to be more hot. By allowing the hot air to flow into the dryer main body 60 into which the waste ascon is introduced, high indirect heat of 140 ° C. or higher is provided into the dryer main body 60, and between the outlet of the dryer main body 60 and the first mouth in the crater 38. A waste heat recovery pipe (70) having a return fan (71) is installed in communication with the return wind pressure of the return fan (71) at the end of the return of the waste heat recovery pipe (70) located at the beginning of the crater (38). Proposal to piggyback on the mainstream wind pressure of (37a) Plate 73 play dryer unit in the closed asphalt recovery plant, characterized in that the configuration to be installed.

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