JP2011246998A - Feeding device of adhesion inhibitor, feeding method of adhesion inhibitor and adhesion inhibitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeding device of an adhesion inhibitor, a feeding method of the adhesion inhibitor and the adhesion inhibitor that achieves the adhesion prevention of asphalt while providing a high deodorant effect and that can suppress the increase in facility cost.SOLUTION: A feeding device of an adhesion inhibitor 30 is intended to feed the adhesion inhibitor that prevents an asphalt mixture made by recycling an asphalt waste material from adhering to the inside surface of a bucket 7 where the asphalt mixture is thrown. The adhesion inhibitor contains a deodorant with a lower boiling point than the heating temperature of the bucket 7. The adhesion inhibitor containing the deodorant is stored in a reservoir and is sprayed on the inside surface of the bucket 7 through a nozzle.

Description

  The present invention, when manufacturing asphalt mixture, supplies to the inner side of a container such as a bucket or trolley into which a material containing asphalt is charged, and prevents the asphalt from adhering to the inner side of the container The present invention relates to an inhibitor supply apparatus, an adhesion preventive agent supply method, and an adhesion preventive agent.

  In the asphalt compound production facility, a material containing asphalt is once put into a bucket or trolley, conveyed, and sent to the next step. At this time, an adhesion preventing agent is supplied so that asphalt does not adhere to the inner surface of the bucket or trolley. As such an adhesion preventing agent, for example, one described in Patent Document 1 is known.

  The asphalt mixture adhesion inhibitor described in Patent Document 1 contains a terpene compound and a linear α-olefin compound as active ingredients, and is diluted with water and used.

On the other hand, in the asphalt composite material manufacturing facility, vaporized gas called blue smoke is generated because the asphalt is heated at a high temperature. Blue smoke is an oil with a foul odor and therefore adversely affects the surrounding environment. In order to suppress the emission of this bad odor, for example, in the asphalt composite material manufacturing facility described in Patent Document 2, a deodorizing unit for removing the odor is arranged at a site where the asphalt is exposed to the outside air to suppress the emission of the odor. ing.
More specifically, in the asphalt composite material manufacturing facility described in Patent Document 2, the sensor unit inputs the wind pressure at four locations around the bucket by the wind pressure detection unit to calculate the difference in wind pressure at each position. Then, the wind direction is detected, and the deodorized liquid is sprayed from a plurality of nozzles downstream from the bucket to deodorize the odor flowing in the leeward direction.

JP 2009-144030 A JP 2001-317007 A

However, in the asphalt compound production facility described in Patent Document 2, although the wind direction is taken into account when spraying the deodorizing liquid, the sprayed deodorant is used when the wind direction is high or the wind direction frequently changes. It seems that there are not a few things that are released without contact with the blue smoke from which the agent is released. Therefore, a higher deodorizing effect is desired.
In addition, in the asphalt mixture manufacturing facility provided with a supply device for spraying the anti-adhesion agent, a separate supply device for spraying the deodorizing agent is required, resulting in a problem that the equipment cost increases.

  Accordingly, the present invention provides an anti-adhesive agent supply device, an anti-adhesive agent supply method, and an anti-adhesive agent capable of obtaining a high deodorizing effect and preventing an increase in equipment cost while preventing asphalt adhesion. For the purpose.

  The anti-adhesive agent supply apparatus of the present invention is an apparatus that supplies an anti-adhesive agent that prevents the asphalt from adhering to the inner surface of a container into which asphalt is charged, and is lower than the temperature at which the container is heated. A storage tank for storing an adhesion preventing agent containing a boiling point deodorizing agent, and a nozzle for supplying the adhesion preventing agent supplied from the storage tank to the inner surface of the container are provided.

  The adhesion preventing agent supply method of the present invention is a method for preventing the asphalt from adhering to the inner surface of a container into which asphalt is charged, and has a boiling point higher than the temperature at which the container is heated on the inner surface of the container. A step of supplying an anti-adhesion agent containing a low deodorizing agent and a step of introducing asphalt into the container.

  Furthermore, the anti-adhesion agent of the present invention prevents asphalt from adhering to the inner surface of the container to be charged, and contains a deodorizing agent having a boiling point lower than the temperature at which the container is heated. A deodorizing agent having a boiling point lower than the heating temperature of the container is contained.

  The container into which asphalt is charged is in a high temperature state by heating with a heater or the like in advance, or is in a high temperature state by repeatedly charging the heated member. According to the present invention, when an adhesion preventing agent containing a deodorizing agent having a boiling point lower than the heated temperature of the container is supplied to the container heated in this manner, the deodorizing agent is vaporized to fill the container. The anti-adhesive agent can be supplied to the inner surface of the container. Blue smoke generated by introducing asphalt into the container is mixed with the vaporized deodorant in the container. Since it is not easily affected by wind in the container, the entire vaporized deodorant can be mixed with blue smoke. The blue smoke then comes out of the container while in contact with the vaporized deodorant, and is swept away by the wind while being mixed with the deodorant. Therefore, a long contact time between the blue smoke and the deodorizer can be ensured.

  In the adhesion preventing agent supply apparatus of the present invention, it is preferable that the nozzle supplies the adhesion preventing agent toward the inner wall surface of the container. By supplying the adhesion preventing agent containing the deodorizing agent toward the inner wall surface of the container, the nozzle can vaporize the deodorizing agent while supplying the adhesion preventing agent to the inner wall surface. The deodorizing agent supplied to the lower part of the inner wall surface can be mixed with blue smoke for a long time while evaporating and rising to the opening of the container.

  It is desirable that a water-soluble adhesion preventing agent containing a diluted water-soluble deodorant is stored in the storage tank. By supplying a water-soluble anti-adhesive agent containing a water-soluble deodorant diluted with water into the container, the deodorizer increased by evaporation is vaporized, so a wide range of blue smoke is deodorized. be able to.

  The present invention can secure a long contact time between the blue smoke and the deodorizer, so that it is possible to obtain a high deodorizing effect and prevent an increase in equipment cost while preventing adhesion of asphalt. .

It is a figure which shows the asphalt compound material manufacturing equipment which concerns on embodiment of this invention. It is a figure which shows the adhesion preventing agent supply apparatus of the asphalt compound material manufacturing equipment shown in FIG. It is a figure for demonstrating the adhesion preventing agent supply method of the adhesion preventing agent supply apparatus shown in FIG.

An asphalt mixture manufacturing facility using an adhesion preventing agent supply apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an asphalt composite material manufacturing facility.
The asphalt mixture manufacturing facility 1 is provided with an R material hopper (waste material hopper) 4 that is conveyed by a belt conveyor 3 that supplies crushed asphalt waste material to an R material dryer (waste material dryer) 2. The R material dryer 2 is provided with a burner 5 for supplying hot air into the R material dryer 2.

  A skip device 6 is disposed at the outlet of the R material dryer 2. The skip device 6 is provided with a bucket 7. The bucket 7 receives the asphalt waste material discharged from the R material dryer 2 and conveys it to the surge bin 8. A trolley 9 is disposed below the surge bin 8 and moves to the charging chute 11 of the mixer 10.

On the other hand, the aggregate hopper 12 for transporting the aggregate is transported to the entrance of the V-material dryer (new aggregate dryer) 14 by the belt conveyor 13. The V material dryer 14 is provided with a burner 15 for supplying hot air into the V material dryer 14.
A hot elevator 16 is disposed at the outlet of the V material dryer 14. The new aggregate from the V-material dryer 14 is put into the vibrating screen 17 and selected by the hot elevator 16.

A hot bottle 18, a weighing tank 19, and a mixer 10 are disposed below the vibrating sieve 17. The new aggregate is put into the mixer 10 from the vibrating sieve 17 through the hot bottle 18 and the measuring tank 19, and mixed with the asphalt waste material conveyed from the surge bin 8 by the trolley 9 in the mixer 10.
A trolley 21 that communicates with the skip device 20 is disposed below the mixer 10. The asphalt mixture mixed by the mixer 10 is loaded on the trolley 21. Further, when the asphalt mixture is directly shipped from the mixer 10, it is loaded on the truck 22 and carried out.

The asphalt composite material transferred by the trolley 21 is transferred by the bucket 23 of the skip device 20 to the trolley 24 disposed at the end point position of the skip device 20.
Below the trolley 24, a plurality of composite silos 25 for storing asphalt composites are arranged. The asphalt composite material accommodated in the trolley 24 is selectively put into the composite silo 25, stored, and ready for shipment.

  When the asphalt composite material is shipped, the asphalt composite material is loaded and transported from each composite material silo 25 to a truck 22 that is dispatched via a hopper 26 disposed below the composite material silo 25.

  In this asphalt mixture production facility 1, asphalt waste material and asphalt mixture, which have become hot, are charged and loaded, the bucket 7 of the skip device 6, the trolley 9, the charging chute 11 of the mixer 10, the trolley 21, and the bucket of the skip device 20. 23, the trolley 24, and the hopper 26 are provided with an anti-adhesive agent supply device 30 for supplying an anti-adhesive agent.

  Here, the adhesion preventing agent supply device 30 will be described in detail with reference to FIG. In the present embodiment, the adhesion preventing agent supply device 30 disposed above the bucket 7 will be described with reference to FIG.

  The adhesion preventing agent supply device 30 is connected to a tank 30a storing an adhesion preventing agent containing a deodorizing liquid, a pump 30b for pumping the adhesion preventing agent containing the deodorizing agent from the tank 30a, and a flow path from the pump 30b. And a plurality of nozzles 30c arranged around the upper portion of the bucket 7 and an electromagnetic on-off valve 30d arranged between the pump 30b and the nozzle 30c. In the present embodiment, two nozzles 30c are provided, above the opening edge of the bucket 7 so as to spray toward the inner surface of the bucket 7 and not to interfere with the asphalt mixture to be charged. And so as to face each other. The driving of the pump 30b and the electromagnetic on-off valve 30d is controlled by the controller 30e. The controller 30e performs not only drive control of the pump 30b and the electromagnetic on-off valve 30d but also overall control of the asphalt composite material manufacturing facility 1. Note that one controller 30e is provided for each of the bucket 7 and the trolley 9 of the skip device 6, the charging chute 11 and the trolley 21 of the mixer 10, the bucket 23, the trolley 24 and the hopper 26 of the skip device 20. Opening / closing control of the valve 30d is performed.

Next, an adhesion preventing agent supplying method of the adhesion preventing agent supplying apparatus 30 configured as described above will be described with reference to the drawings.
In advance, an adhesion preventing agent containing a deodorizing agent is stored in the tank 30a shown in FIG. Here, the adhesion preventing agent and the deodorizing agent will be described.

  The anti-adhesive agent is a mixture of vegetable oil and surfactant and water-soluble that can be diluted with water, and has a boiling point higher than the heating temperature of the bucket 7 and the trolley 9. In particular, it is desirable that the flash point is high from the viewpoint of safety and the dilution factor is high from the viewpoint of economy. In the present embodiment, a commercially available product having a flash point of 250 ° C. or more and diluted about 10 times or more can be used.

The deodorizing agent contained in the adhesion preventing agent has water solubility that can be diluted with water, and has a boiling point lower than the heating temperature of the bucket 7 or the trolley 9. In the present embodiment, a commercially available product such as a plant-derived one or a chemically synthesized one can be adopted as the deodorizer, and the boiling point is about 100 ° C. This deodorizing agent is mixed with the anti-adhesion agent in advance, diluted with water and stored in the tank 30a.
And the bucket 7 is heated and the asphalt compound material manufacturing equipment 1 is operated. The heating temperature is about 160 ° C.

  The controller 30e starts the pump 30b and opens the electromagnetic on-off valve 30d before discharging the high-temperature asphalt waste material from the R material dryer 2, and adds an anti-adhesive agent containing a deodorizing agent from the nozzle 30c. The inner wall surface 7a (see FIG. 3) of the bucket 7 is sprayed. The adhesion preventing agent containing the deodorizing agent is sprayed toward the inner wall surface 7a on one side by one nozzle 30c and sprayed toward the inner wall surface 7a on the opposite side by the other nozzle 30c. It is applied evenly throughout. Although the nozzle 30c is sprayed toward the inner wall surface 7a, since the entire adhesion preventing agent is in the form of a mist, a part of the adhesion preventing agent reaches the bottom surface and reaches the entire inner surface of the bucket 7.

  Since the bucket 7 is heated in advance higher than the boiling point of water and further higher than the boiling point of the deodorant, the deodorant is vaporized at the stage where the sprayed anti-adhesive agent reaches the inner wall surface 7a. Water rises with the vaporized water vapor, and the bucket 7 is filled with water vapor containing a deodorant. At that timing, the controller 30 e discharges the asphalt mixture production from the R material dryer 2 and puts it into the bucket 7.

A large amount of blue smoke is generated in the asphalt waste material put into the heated bucket 7, but the generated blue smoke is mixed with the vaporized deodorant in the bucket 7. Since it is difficult to be influenced by wind in the bucket 7, water vapor containing the vaporized deodorant component can be efficiently mixed with blue smoke. The nozzle 30c sprays the adhesion preventing agent containing the deodorizing agent toward the inner wall surface of the bucket 7, so that the deodorizing agent can be vaporized while the adhesion preventing agent is sprayed on the inner wall surface. The deodorizer supplied to the lower portion of the inner wall surface of the bucket 7 can be mixed with blue smoke for a long time while evaporating and rising to the opening of the bucket 7. The blue smoke comes out of the bucket 7 in contact with the vaporized deodorant while being in contact with the vaporized deodorant, and flows and diffuses in the wind while remaining mixed with the deodorant. Accordingly, since a long contact time between the blue smoke and the deodorizer can be ensured, a deodorizing effect can be obtained efficiently without waste.
In addition, the anti-adhesion agent sprayed onto the bucket 7 is water-soluble, and the deodorant to be contained is also water-soluble, so that it can be mixed without separation, and diluted with water will increase the amount of deodorant. Since it vaporizes, water vapor containing a deodorant component can deodorize a wide range of blue smoke.

  Since the adhesion preventing agent component has a boiling point higher than the heating temperature of the bucket 7, the inner surface of the bucket 7 can maintain a state where the adhesion preventing agent component is adhered without being vaporized. Therefore, when the asphalt waste material is thrown forward into the surge bin 8 at a position where the bucket 7 has moved to above the surge bin 8, the asphalt waste material does not adhere to the inner surface of the bucket 7 and remains without leaving the asphalt waste material. be able to.

  For example, as an adhesion preventing agent sprayed on the bucket 7, it is conceivable to store a deodorizing agent and an adhesion preventing agent in individual tanks and spray them from separate nozzles toward the inner surface of the bucket 7. That is, this is a case where two spraying devices, one for the conventional anti-adhesion agent and one for the deodorizing agent, are provided. However, in order to spray the viscous deodorant and anti-adhesion agent, it is necessary to dilute each with water. Therefore, when the deodorizing agent and the adhesion preventing agent are each diluted at a predetermined magnification, the total amount of water for dilution is added in the bucket 7. Therefore, a large amount of water is thrown into the bucket 7, and as a result, the deodorizing agent and the anti-adhesion agent are excessively diluted, and the respective concentrations decrease, thereby reducing the anti-adhesion effect and the deodorizing effect. To do. Thus, conventionally, since the anti-adhesive agent is sprayed toward the inner surface of the bucket 7 and the deodorizer is sprayed near the opening of the bucket 7 or upward, the deodorizer is easily diffused and has a high deodorizing effect. Could not get.

  In the adhesion preventing agent according to the present embodiment, since the deodorizing agent is contained in advance, the deodorizing agent is diluted so as to be sprayable with the amount of water about 10 times that dilutes the adhesion preventing agent part. Therefore, the amount of water can be reduced. Therefore, since it can spray by a high density | concentration, the direction sprayed by diluting in the mixed state rather than diluting and spraying individually can obtain the high adhesion prevention effect and deodorizing effect. Moreover, since one spraying device is sufficient, it is possible to suppress an increase in equipment cost.

  In the above, the case where asphalt waste material is thrown into the bucket 7 from the R material dryer 2 has been described, but the asphalt waste material and the asphalt composite material are exposed to the external environment and give off a bad odor. 21. Also in the bucket 23, the trolley 24, and the hopper 26 of the skip device 20, the same effect can be obtained by using the adhesion preventing agent supply device 30.

  In the present embodiment, the example in which the adhesion preventing agent containing the deodorizing agent is sprayed has been described. However, the adhesion preventing agent may be discharged. In that case, it is desirable to discharge water over a wide range so as to spread in a fan shape, or to arrange the nozzle so as to surround the opening of the container so as to uniformly discharge the inner surface.

  INDUSTRIAL APPLICABILITY The present invention is suitable for an asphalt mixture manufacturing facility that easily generates malodor that adversely affects the surrounding environment.

DESCRIPTION OF SYMBOLS 1 Asphalt compound material production equipment 2 R material dryer 3 Belt conveyor 4 R material hopper 5 Burner 6 Skip device 7 Bucket 7a Inner wall surface 8 Surge bin 9 Trolley 10 Mixer 11 Input chute 12 Aggregate hopper 13 Belt conveyor 14 V material dryer 15 Burner 16 Hot elevator 17 Vibrating sieve 18 Hot bottle 19 Weighing tank 20 Skip device 21 Trolley 22 Truck 23 Bucket 24 Trolley 25 Composite silo 26 Hopper 30 Adhesive supply device 30a Tank 30b Pump 30c Nozzle 30d Electromagnetic switching valve 30e Controller

Claims (5)

In the anti-adhesive agent supply device for supplying an anti-adhesive agent that prevents the asphalt from adhering to the inner surface of the container into which the asphalt is charged,
A storage tank for storing an anti-adhesive agent containing a deodorizer having a boiling point lower than the temperature at which the container is heated;
An adhesion preventing agent supply apparatus comprising: a nozzle for supplying an adhesion preventing agent supplied from the storage tank to an inner surface of the container.   The adhesion preventing agent supply apparatus according to claim 1, wherein the nozzle supplies the adhesion preventing agent toward an inner wall surface of the container.   The adhesion preventive agent supply apparatus according to claim 1 or 2, wherein a water-soluble anti-adhesive agent containing a water-soluble deodorant diluted with water is stored in the storage tank. In the anti-adhesive agent supply method for preventing the asphalt from adhering to the inner surface of the container into which the asphalt is charged,
Supplying an adhesion preventing agent containing a deodorizing agent having a boiling point lower than the temperature at which the container is heated to the inner surface of the container;
A method of supplying an anti-adhesive agent, comprising the step of charging asphalt into the container. In the anti-adhesive agent that prevents the asphalt from adhering to the inner surface of the container into which it is charged,
An anti-adhesion agent comprising a deodorizer having a boiling point lower than the temperature at which the container is heated.

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