Separative demolition method for building material

Abstract

To provide a separative demolition method for building materials that is capable of separating building materials contaminated with harmful substances into harmful substances and recyclable building materials.SOLUTION: The present invention relates to a separative demolition method that is capable of separating building materials contaminated with harmful substances into the harmful substances and the building materials. The method has a step S1 of placing the building materials removed from the building in a separative processing area; and a step S2 of jetting jet water from a jet device provided in the separative processing area to the surfaces of the building materials that are contaminated with the harmful substance to remove the harmful substance from the building materials.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for dismantling building materials, such as aluminum panels to which harmful substances, such as asbestos-containing materials, have been attached, and dismantling the same into the harmful substances and the building materials. [Background technology]

[0002] In the past, some steel-framed skyscrapers had aluminum panels on the exterior, and the inside of the panels sometimes contained building materials containing asbestos (hereinafter referred to as asbestos-containing materials) for fire resistance and soundproofing. Therefore, when the exterior is demolished, it is necessary to properly dispose of these asbestos-containing materials.

[0003] Sprayed asbestos can be removed relatively easily with hand tools, but adhesives and soundproofing materials containing asbestos are almost impossible to remove with hand tools, and if they cannot be removed, the aluminum panels must be properly disposed of as asbestos-containing waste.

[0004] On the other hand, as a method for recycling composite waste containing used automobiles and discarded home appliances, for example, a method such as that shown in Patent Document 1 is known. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-311250 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, when aluminum panels are treated as asbestos-containing waste, the following problems arise because the aluminum cannot be reused. First, when a large amount of aluminum panels are generated, disposal costs become enormous. A huge amount of disposal land is required to landfill all the aluminum panels that are generated. In addition, if aluminum cannot be recycled (recycled ingots), it will be necessary to refine the aluminum (new ingots), and a large amount of CO2 will be generated to manufacture ingots.

[0007] For this reason, there was a demand for technology that would allow aluminum panels to be reused as aluminum, without having to be treated as asbestos-containing waste.

[0008] The present invention has been made in consideration of the above, and aims to provide a method for separating and dismantling building materials, which can separate building materials to which hazardous substances have been attached into hazardous substances and reusable building materials. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems and achieve the objective, the method for separating and dismantling building materials of the present invention is a method for separating and dismantling building materials having hazardous substances attached thereto, and dismantling the same into the hazardous substances and the building materials, and is characterized in having the steps of placing the building materials removed from a building in a separation processing area, and spraying a jet of water from an injection device provided in the separation processing area onto the surfaces of the building materials to which the hazardous substances are attached, thereby removing the hazardous substances from the building materials.

[0010] In addition, another method for sorting and dismantling building materials according to the present invention is characterized in that, in the above-mentioned invention, it includes a step of cutting the building materials into a predetermined size using the spray device provided in the sorting processing area.

[0011] In addition, another method for separating and dismantling building materials according to the present invention is characterized in that, in the above-mentioned invention, the spraying device has a spray nozzle that can be moved by remote control in two directions perpendicular to each other along the surface of the building material.

[0012] Another method for separating and dismantling building materials according to the present invention is characterized in that, in the above-mentioned invention, the harmful substance is a material containing asbestos, and the building material is an aluminum panel. Effect of the Invention

[0013] According to the method for separating and dismantling building materials of the present invention, there is provided a method for separating and dismantling building materials having hazardous substances attached thereto, and separating the building materials and the hazardous substances, the method comprising the steps of placing the building materials removed from a building in a separation processing area, and spraying a jet of water from a spraying device provided in the separation processing area onto the surfaces of the building materials to which the hazardous substances are attached, thereby removing the hazardous substances from the building materials. This has the effect of efficiently separating the building materials having hazardous substances attached thereto into the hazardous substances and the building materials.

[0014] In addition, another method for separating and dismantling building materials according to the present invention includes a step of cutting the building materials to a predetermined size using the spray device provided in the separation processing area, thereby making it easier to perform work such as removing harmful substances.

[0015] In addition, according to another method for separating and dismantling building materials of the present invention, the spray device has a spray nozzle that can be moved by remote control in two directions perpendicular to each other along the surface of the building material, thereby achieving the effect of being able to remotely move the spray nozzle to a desired position along the surface.

[0016] In addition, according to another method for separating and dismantling building materials of the present invention, the hazardous substance is a material containing asbestos, and the building material is an aluminum panel, so that it is possible to remove the asbestos-containing material from the aluminum panel, thereby achieving the effect of recycling the aluminum. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic process diagram showing an embodiment of a method for separating and dismantling building materials according to the present invention. [Diagram 2] FIG. 2 is a schematic perspective view of an XY moving device used in this embodiment. [Diagram 3] FIG. 3 is a schematic perspective view showing a removal state in this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the method for separating and dismantling building materials according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiment.

[0019] The method for separating and dismantling building materials according to an embodiment of the present invention is a method for separating and dismantling aluminum panels (hereinafter referred to as aluminum panels), which are building materials to which asbestos-containing materials (harmful substances) have been attached, into asbestos-containing materials and aluminum panels.

[0020] This method, as shown in Fig. 1, comprises step S1 of placing aluminum panels removed from a building in a sorting area, and step S2 of spraying a water jet (jet water) from a spray nozzle (spraying device) of an XY moving device provided in the sorting area onto the panel surface of the aluminum panel to which the asbestos-containing material is attached, thereby removing the asbestos-containing material from the aluminum panel. This embodiment is intended to separate asbestos-containing materials (such as soundproofing materials and vibration-proofing materials) applied to the back side of aluminum panels generated during the demolition of a skyscraper (building), and to reuse the aluminum.

[0021] As shown in FIG. 2, the XY movement device 10 includes a rectangular parallelepiped frame 12, an X-axis movement mechanism 14 and a Y-axis movement mechanism 16 provided on the frame 12, and legs 18 provided at the four corners of the lower part of the frame 12. The frame 12 includes four frame members 20, 22, 24, and 26 on the lower side. The frame members 20 to 26 are provided horizontally at the same height. The frame members 20 and 22 are parallel to each other and extend in the X-axis direction in the figure. The frame members 24 and 26 are parallel to each other and extend in the Y-axis direction in the figure. The X-axis direction and the Y-axis direction are two directions that are perpendicular to each other in a horizontal plane. An opening 28 surrounded by the frame members 20 to 26 is formed directly below the frame 12.

[0022] The X-axis moving mechanism 14 is a well-known mechanism including an X-axis guide 30 extending in the X-axis direction, and an X-axis moving section 32 attached to the X-axis guide 30 so as to be movable in the X-axis direction. The X-axis moving section 32 is movable in the X-axis direction by a motor (not shown), and its position is controlled. A roller 34 is formed on one end of the X-axis guide 30, and is engaged with the frame member 26 so as to be movable along the upper surface of the frame member 26. The other end of the X-axis guide 30 is fixed to a Y-axis moving section 36 of the Y-axis moving mechanism 16. An injection nozzle 38 is detachably attached to the X-axis moving section 32 so as to face downward.

[0023] The Y-axis moving mechanism 16 moves the X-axis moving mechanism 14 in the Y-axis direction, and is a well-known mechanism including a Y-axis moving unit 36 ​​attached to the frame member 24 so as to be movable along the frame member 24 extending in the Y-axis direction. The Y-axis moving unit 36 ​​is movable in the Y-axis direction by a motor (not shown), and the position of the Y-axis moving unit 36 ​​is controlled.

[0024] The X-axis moving mechanism 14 and the Y-axis moving mechanism 16 are configured to be remotely operable. By operating the X-axis moving mechanism 14 and the Y-axis moving mechanism 16, the jet nozzle 38 of the X-axis moving unit 32 can be moved in the X-axis direction and the Y-axis direction. This allows the jet nozzle 38 to be moved to a desired position by remote control. A super-high pressure water supply device (not shown) is connected to the jet nozzle 38. The jet nozzle 38 is capable of jetting a super-high pressure water jet downward. As the jet nozzle 38, a nozzle head attached to a well-known water jet gun suitable for asbestos removal can be used.

[0025] Next, a specific procedure of the method for separating and dismantling building materials according to this embodiment will be described. First, in step S1, aluminum panels are removed from the exterior of the building and transported to a designated sorting and processing area. The sorting and processing area is set up in an area isolated from the general work area, and is formed as a section surrounded by protective sheets to prevent asbestos from scattering and leaking to the outside. Subsequent work is generally carried out in the sorting and processing area.

[0026] Next, the aluminum panel is cut into a size that is easy to work with using the XY moving device 10 arranged in the sorting area. For example, the XY moving device 10 is arranged on the floor, and the aluminum panel is arranged on the floor of the opening 28, and then the spray nozzle 38 is moved in the X-axis direction and the Y-axis direction while spraying an ultra-high pressure water jet from the spray nozzle 38 toward the aluminum panel, and the aluminum panel is cut into a desired shape and size. In this case, the spray flow rate and spray speed from the spray nozzle 38 may be adjusted to be suitable for cutting, or the spray nozzle 38 may be replaced with one suitable for cutting. The cutting work may be performed by remotely operating the XY moving device 10, or may be performed by a worker using another cutting tool. The size to be cut can be set in consideration of the size that is easy to remove using the XY moving device 10, the size that is easy to carry out by a worker, and the size that is easy to transport using a truck vehicle.

[0027] In the next step S2, multiple aluminum panels are placed side by side on the floor of the opening 28 of the XY movement device 10, and then an ultra-high pressure water jet is sprayed from the spray nozzle 38 toward the aluminum panels to remove the asbestos-containing materials adhering to the panel surfaces. At this time, the spray nozzle 38 is remotely moved in the X-axis and Y-axis directions while spraying. It is preferable to control the spray nozzle 38 to move in a zigzag trajectory in a plan view so that the asbestos-containing materials can be removed evenly. Figure 3 shows an example of the removal situation using the XY movement device 10. The example shown in the figure shows the case where multiple rectangular aluminum panels lined up in the Y-axis direction are continuously removed.

[0028] It is preferable that the operator of the XY movement device 10 remotely operates it from outside the sorting area (for example, outside the protective sheet) and does not enter the sorting area while the XY movement device 10 is in operation. The status of work by the XY movement device 10 may be confirmed through a surveillance camera installed in the sorting area, or may be visually confirmed from outside the protective sheet. During removal work by the XY movement device 10, it is preferable that the worker checks the removal status of the aluminum panel after removal processing and performs other work such as drainage treatment. If the XY movement device 10 is used to remove asbestos-containing materials, the worker does not need to remove them using a handgun-type low-volume ultra-high-pressure water jet device or the like, so work safety can be ensured.

[0029] According to this embodiment, aluminum panels with asbestos-containing materials attached thereto can be efficiently separated into asbestos-containing materials and aluminum panels. Asbestos-containing materials can be removed from aluminum panels, and aluminum can be recycled. In addition, the XY movement device 10 cuts the aluminum panels to a size that is easy to work with and removes the asbestos-containing materials, reducing the burden on workers.

[0030] Furthermore, according to this embodiment, the following effects can be obtained. (1) Cost Reduction By separating the aluminum panels with asbestos-containing materials attached to them into the asbestos-containing materials and the aluminum panels, the asbestos-containing waste can be disposed of in landfills and the aluminum panels can be sold as a valuable resource.

[0031] By using the XY moving device 10 to remove the debris with a super-high pressure water jet, the debris can be removed without the need for workers to do the work themselves, greatly reducing the labor involved in the removal process. 2 When comparing the separate processing of the recycled aluminum (which generates 100 tons) with disposal in its original form in a landfill, separate processing can reduce costs by about 15%.

[0032] (2) Reduction of CO2 emissions By removing the asbestos-containing material from the aluminum panel to which it is attached, the aluminum panel can be reused, eliminating the need for new metal and enabling a significant reduction in CO2 emissions. For example, 2 In the case of recycling new metals (separate disposal), approximately 1,000 tons of CO2 is generated when new metals are used. In contrast, approximately 30 tons of CO2 is generated when aluminum is recycled using this invention. Therefore, the amount of CO2 generated when new metals are used can be reduced by 97%.

[0033] (3) Reduction of waste disposal volume By removing and separating the asbestos-containing materials from aluminum panels to which they have been attached, it is possible to dispose of only the removed asbestos-containing materials. This makes it possible to significantly reduce the amount of asbestos-containing waste. For example, in the case of an aluminum panel to which asbestos-containing materials have been attached, if the volume of the aluminum panel is 90% and the volume of the asbestos-containing materials is 10%, then 90% of the volume of the aluminum panel can be reduced. For example, with bulk disposal, the amount of waste containing asbestos can be reduced by 12,000 m. 2 At the time of disposal, the amount was approximately 1,200 m 3 If the waste contains asbestos, and only the asbestos-containing materials are disposed of by the separation method of the present invention, the amount of asbestos-containing waste will be approximately 120 m 3 This means a 90% reduction is possible.

[0034] In the above embodiment, the harmful substances are asbestos-containing materials and the building materials are aluminum panels, but the present invention is not limited to this, and the harmful substances may be substances other than asbestos-containing materials, and the building materials may be building materials other than aluminum panels. Even in this case, the same effects as those described above can be achieved.

[0035] As described above, according to the method for separating and dismantling building materials of the present invention, building materials having hazardous substances attached thereto are separated and dismantled into the hazardous substances and the building materials, and the method includes the steps of placing the building materials removed from a building in a separation processing area, and spraying a jet of water from a spraying device provided in the separation processing area onto the surfaces of the building materials having the hazardous substances attached thereto, thereby removing the hazardous substances from the building materials.Therefore, the building materials having hazardous substances attached thereto can be efficiently separated into the hazardous substances and the building materials.

[0036] In addition, according to another method for separating and dismantling building materials of the present invention, there is a step of cutting the building materials to a predetermined size using the spray device provided in the separation processing area, making it easier to perform work such as removing hazardous substances.

[0037] In addition, according to another method for separating and dismantling building materials of the present invention, the spray device has a spray nozzle that can be moved by remote control in two directions perpendicular to each other along the surface of the building material, so that the spray nozzle can be moved to a desired position along the surface by remote control.

[0038] In addition, according to another method for separating and dismantling building materials of the present invention, the hazardous substance is a material containing asbestos, and the building material is an aluminum panel, so that the asbestos-containing material can be removed from the aluminum panel, and the aluminum can be recycled. [Industrial Applicability]

[0039] As described above, the method for separating and dismantling building materials according to the present invention is useful for reusing building materials to which hazardous substances such as asbestos-containing materials are attached, and is particularly suitable for separating building materials to which hazardous substances are attached into hazardous substances and reusable building materials. [Explanation of symbols]

[0040] 10 XY moving device 12 Frame 14 X-axis movement mechanism 16 Y-axis movement mechanism 18 Legs 20, 22, 24, 26 Frame members 30 X-axis guide 32 X-axis moving part 34 Lola 36 Y-axis moving part 38 Injection Nozzle

Claims

1. A method for separating and dismantling building materials to which harmful substances are attached, by separating the building materials from the harmful substances, comprising: A method for separating and dismantling building materials, comprising the steps of: placing the building materials removed from a building in a sorting and processing area; and spraying a jet of water from a spraying device provided in the sorting and processing area against the surfaces of the building materials to which the hazardous substances are attached, thereby removing the hazardous substances from the building materials.

2. 2. The method for separating and dismantling building materials according to claim 1, further comprising a step of cutting the building materials into a predetermined size using the spray device provided in the separation processing area.

3. 3. The method for separating and dismantling building materials according to claim 1 or 2, characterized in that the spray device has a spray nozzle that can be moved by remote control in two directions perpendicular to each other along the surface of the building material.

4. 3. The method for separating and dismantling building materials according to claim 1, wherein the hazardous substance is a material containing asbestos, and the building material is an aluminum panel.

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