Wetting method for asbestos insulation for chimneys

Abstract

To provide a wetting aid, a wetting system, and a wetting method for asbestos insulation for chimneys, which sufficiently and reliably wet the asbestos insulation for chimneys in advance before removal, and suppress asbestos scattering. [Solution] The wetting aid 12 for asbestos insulation 10b for chimneys is a long, cylindrical container with a sealed opening. The wetting aid 12 is hung from the top of the chimney 10 to the base or bottom, and air 20 is filled into the container body through the sealed opening on the top side, causing it to inflate, and the container body is attached to the inside surface of the asbestos insulation 10b that forms the inside of the chimney 10. With the wetting aid 12 attached to the inside surface of the asbestos insulation 10b that forms the inside of the chimney 10, a wetting agent 22 is poured from the top of the chimney 10, allowing the chimney asbestos insulation 10b to be sufficiently and reliably moistened in advance before removal.

Description

[Technical Field]

[0001] The present invention relates to a wetting aid, a wetting system, and a wetting method for wetting asbestos insulation for chimneys. [Background technology]

[0002] When removing asbestos insulation for chimneys during construction work such as the demolition and renovation of chimneys, it is necessary to moisten the asbestos insulation before removal to prevent dust generation and dispersion. Water or special wetting agents are used to wetting asbestos insulation for chimneys. Water is the most basic wetting agent, and wetting materials containing asbestos prevents dust generation. Wetting agents specially designed for asbestos removal work are highly permeable and can more effectively suppress dust. Wetting agents are liquids used to prevent dust generation, and by enveloping asbestos fibers in water, they prevent them from scattering into the air when crushed, etc.

[0003] Currently, before removing asbestos insulation for chimneys, a wetting agent is sprayed onto the asbestos insulation to moisten it in advance (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5336108 Summary of the Invention [Problem to be solved by the invention]

[0005] The chemical solution spraying device for cylindrical structures in Patent Document 1 is a spraying device that is suspended inside the cylindrical portion of a cylindrical structure (chimney), and is equipped with a spray nozzle that has a chemical solution supply port and rotates 360 degrees by the water pressure of the chemical solution supplied from the supply port to spray and spray the chemical solution radially, a liquid guide pipe that guides the chemical solution to the chemical solution supply port of the spray nozzle, and a pump that delivers the chemical solution to the liquid guide pipe.This chemical solution spraying device can be used to spray a wetting agent onto asbestos insulation for chimneys that has been driven into the chimney, thereby wetting the asbestos insulation.

[0006] However, some asbestos insulation inside chimneys has its surface covered with a slate-like liner material containing asbestos, and even if a wetting agent is sprayed onto the asbestos insulation, it may not be possible to sufficiently and reliably wet the asbestos insulation.

[0007] The present invention aims to solve the above-mentioned problems and to provide a wetting aid, wetting system, and wetting method for asbestos insulation for chimneys that will thoroughly and reliably wet the asbestos insulation before removal, thereby preventing asbestos from scattering. [Means for solving the problem]

[0008] The wetting aid for asbestos insulation for chimneys of the present invention is a long, cylindrical container with a sealed opening that hangs from the top of the chimney to the base or bottom.Air is filled into the container body through the sealed opening on the top side, inflating it so that the container body is attached to the inside surface of the asbestos insulation that forms the inside of the chimney.

[0009] The wetting system for asbestos insulation for chimneys of the present invention comprises the wetting aid, an air supply unit that fills the wetting aid with air, and a wetting agent supply unit that pours a wetting agent into the asbestos insulation at the top of the chimney after filling the wetting aid with air.

[0010] The method for wetting asbestos insulation for chimneys of the present invention comprises the steps of: Asbestos insulation for chimneys is a long, cylindrical container with a sealed opening that hangs from the top of the chimney to the base or bottom. Air is filled into the container body through the sealed opening on the top side, inflating it, and the container body is then attached to the inside surface of the asbestos insulation that forms the inside of the chimney. Wetting aids 、 Inside the chimney The inner surface of the asbestos insulation that forms Paste to In this state , the The wetting agent is poured from the top of the chimney. [Effects of the Invention]

[0011] According to the present invention's asbestos insulation wetting aid for chimneys, asbestos insulation wetting system, and asbestos insulation wetting method, the chimney asbestos insulation wetting aid for chimneys of the present invention is hung inside a chimney (the hollow portion of the chimney) where a step is formed between the concrete frame and the asbestos insulation at the top, and is then filled with air to inflate it. The air pressure then causes the wetting agent poured into the top of the chimney to flow only through the cylindrical asbestos insulation without leaking out. The wetting agent flowing through the asbestos insulation penetrates the asbestos insulation, wetting it. This allows the asbestos insulation to be sufficiently and reliably wetted in advance of removal work, thereby preventing asbestos from scattering during removal work. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a state diagram of a chimney top using the present invention (end view of the chimney top). [Figure 2] This is a diagram (end view of a chimney) showing the wetting aid for asbestos insulation for chimneys, the wetting system for asbestos insulation for chimneys, and the wetting method for asbestos insulation for chimneys of the present invention, where Figure (a) is a diagram showing the state when the wetting aid for asbestos insulation is hung inside the chimney, and Figure (b) is a diagram showing the state when the wetting aid is attached to the asbestos insulation. [Figure 3] This is a diagram (end view of a chimney) showing the wetting aid for asbestos insulation for chimneys, the wetting system for asbestos insulation for chimneys, and the wetting method for asbestos insulation for chimneys of the present invention, where Figure (a) is a phase diagram showing how a wetting agent is poured into the top of the chimney, and Figure (b) is a phase diagram showing how the wetting agent wetting the asbestos insulation. DETAILED DESCRIPTION OF THE INVENTION

[0013] This invention realizes the suppression of asbestos dispersion during construction work such as the demolition and repair of chimneys. [Example]

[0014] The wetting aid for asbestos insulation for chimneys, the wetting system for asbestos insulation for chimneys, and the wetting method for asbestos insulation for chimneys of the present invention will be described with reference to the drawings. Fig. 1 is a diagram of the state of a chimney top using the present invention (an end view of the chimney top). Fig. 2 is a diagram (an end view of a chimney) showing the chimney asbestos insulation wetting aid, chimney asbestos insulation wetting system, and chimney asbestos insulation wetting method of the present invention, where Fig. (a) is a diagram showing the asbestos insulation wetting aid hanging inside the chimney, and Fig. (b) is a diagram showing the wetting aid attached to the asbestos insulation. Fig. 3 is a diagram (an end view of a chimney) showing the chimney asbestos insulation wetting aid, chimney asbestos insulation wetting system, and chimney asbestos insulation wetting method of the present invention, where Fig. (a) is a diagram showing the state of pouring a wetting agent into the chimney top, and Fig. (b) is a diagram showing the wetting agent wetting the asbestos insulation.

[0015] The chimney 10 shown in Figures 1 to 3 has a two-layer structure consisting of a cylindrical concrete body (chimney body) 10a and a cylindrical asbestos insulation material 10b driven into the hollow portion of the concrete body 10a. 1 is made up of only a concrete skeleton 10a, and no asbestos insulation material 10b is present at the top. That is, at the top of the chimney 10, there is a difference in height between the concrete skeleton 10a and the asbestos insulation material 10b, forming a step 10c. In addition, concrete or mortar may be filled in the step 10c (the top of the chimney 10 where there is no asbestos insulation material 10b). If concrete or mortar is filled in the step 10c, it should be removed using a chisel or electric pick before the asbestos insulation material 10b is removed (before the asbestos insulation material 10b is wetted), so that the step 10c is formed at the top of the chimney 10.

[0016] The wetting aid 12 for asbestos insulation for chimneys of the present invention is a long, cylindrical container with a sealed opening. The wetting aid 12 is hung from the top of the chimney 10 to the base or bottom, and air 20 is filled into the container body through the sealed opening on the top side to inflate it (Fig. 2(a)), and the container body is then attached to the inside surface of the asbestos insulation 10b that forms the inside of the chimney 10 (Fig. 2(b)). The wetting aid 12 attached to the inner surface of the asbestos heat insulating material 10b creates a waterproof coating on the inner surface of the asbestos heat insulating material 10b.

[0017] The wetting aid 12, which is a long cylindrical container, is a bag-like object formed by sealing the opening of, for example, a polyethylene tube (a cylindrical product made from raw rolls before being processed into PE bags). The wetting aid 12 is not limited to being made of polyethylene, and any material can be used as long as it can be inflated with air 20 and the container body can be attached to the inside surface of the asbestos insulation material 10b that forms the inside of the chimney 10. The container body is the cylindrical portion of the long cylindrical container other than the top and bottom (sealed opening).

[0018] A hanging device (not shown) is provided above the chimney 10, and the wetting aid 12 is suspended from the top to the base or bottom of the chimney 10 using the hanging device. An air inlet (not shown) is provided at the sealed opening on the top side. The wetting aid 12 in FIGS. 2 and 3 is hung inside the chimney 10 from the top to the bottom of the chimney 10.

[0019] The wetting system 14 for asbestos insulation for chimneys of the present invention comprises a wetting aid 12, an air supply unit 16, and a wetting agent supply unit 18 (Figs. 2(a) and 3(a)). The air supply unit 16 is an air compressor that fills the wetting aid 12 with air 20 (Fig. 2(a)). The wetting agent supply unit 18 is a water pipe that fills the wetting aid 12 with air 20 and then pours wetting agent (water) 22 into the asbestos insulation 10b at the top of the chimney 10 (Fig. 3(a)). In addition, the method of wetting asbestos insulation for chimneys of the present invention involves attaching a wetting aid 12 to the inside of the chimney 10 and pouring a wetting agent 22 into the top of the chimney 10. By pouring the wetting agent 22 from the top of the chimney 10, the wetting agent 22 flows down over the entire layer of the asbestos insulation 10b and is absorbed into the asbestos insulation 10b. In other words, the wetting aid 12 is filled with air 20 to inflate it, and the wetting aid 12 is attached to the inside surface of the chimney 10 by the air pressure. Then, by pouring the wetting agent 22 from the top of the chimney 10, the asbestos insulation 10b becomes immersed in the wetting agent 22 and becomes moist. After wetting, excess water or excess agent that has flowed down accumulates at the bottom of the chimney 10. The accumulated excess water or excess agent is disposed of as contaminated water.

[0020] According to the present invention, a wetting aid 12 is attached by air pressure to the inside surface of the asbestos insulation 10b of a chimney 10, which has a step 10c at its top between the concrete body 10a and the asbestos insulation 10b. This allows the wetting agent 22 poured into the top of the chimney 10 to flow only through the tubular asbestos insulation 10b without leaking out. The wetting agent 22 flowing through the asbestos insulation 10b penetrates the asbestos insulation 10b, wetting it. This allows the asbestos insulation 10b to be sufficiently and reliably wetted in advance before removal work, preventing asbestos from scattering during removal work. [Explanation of symbols]

[0021] 10 Chimney 10b Asbestos insulation for chimneys 12 Wetting aid for asbestos insulation 14 Wetting system for asbestos insulation for chimneys 16 Air supply unit 18 Wetting agent supply unit 20. Air 22 Wetting Agent

Claims

[Claim 1] A method for wetting asbestos insulation for chimneys, characterized in that the wetting aid for chimney asbestos insulation is a long cylindrical container with a sealed opening that hangs from the top of the chimney to the base or bottom, and air is filled into the container body from the sealed opening on the top side to inflate it, and the container body is attached to the inside surface of the asbestos insulation that forms the inside of the chimney, and then a wetting agent is poured into the top of the chimney with the wetting aid attached to the inside surface of the asbestos insulation that forms the inside of the chimney.

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