WO2014010939A1 - Method for adhering asbestos particles, and atomization apparatus used therefor - Google Patents

Abstract

The present invention relates to a method for adhering asbestos particles (i.e., firmly fixing asbestos onto an asbestos product such that the asbestos does separate from the asbestos product), and to an atomization apparatus used therefor. More particularly, the present invention relates to a method for adhering asbestos particles and to an atomization apparatus used therefor, wherein the asbestos product is rendered hydrophilic prior to the atomization (spraying) of the solution for adhering the asbestos particles, to thus enable the solution for adhering the asbestos particles to be uniformly and deeply embedded and thus enable the asbestos particles to be firmly adhered, thereby preventing the asbestos particles from becoming separated.

Description

Asbestos particle fixation method and atomization device used therein

The present invention relates to a method for fixing asbestos particles (fixing asbestos so as to stick firmly so as not to escape from asbestos products) and an atomization device used therein, in particular before assembling (spraying) a solution for fixing asbestos particles. The present invention relates to an asbestos particle sticking method and an atomizer used to prevent asbestos particles from falling off by assembling and deeply infiltrating a solution for fixing asbestos particles by hydrophilizing the state of the product.

In general, fibrous asbestos (asbestos) has excellent properties such as durability, heat resistance, chemical resistance, electrical insulation, etc., and is inexpensive. It is widely used in buildings and facilities such as fire, insulation, and insulation, but on the other hand, asbestos is the main cause of human lung cancer, lung disease, pleura, pleura, malignant tumors, and many other harmful effects such as respiratory diseases.

As a result, the use of asbestos-based building materials required the removal and scattering of asbestos particles generated in buildings and facilities that were constructed, as well as the technology of fixing the particles of fibrous asbestos to mitigate asbestos damage. In accordance with this, various methods of asbestos particle fixation have been proposed.

However, the conventional method for fixing asbestos particles is to atomize only the colloidal silica solution without atomization using the atomizer to infiltrate the asbestos product. Because the surface of the asbestos is not hydrophilized, colloidal silica solution does not penetrate into the asbestos quickly and takes a long time, and it is not possible to penetrate evenly and deeply so that the entire asbestos particles cannot be firmly fixed. .

In addition, the moisture and oil contained in the compressed air provided by the air compressor constituting the atomizer is not removed in the past, and when mixed with the colloidal silica solution, the specific gravity is high when atomizing. Irregular movement of the floating and moving microparticles, which occurs in the case of micrometers (μm) unit) is not performed properly, and there is a problem that the adsorption on the surface of the asbestos product is not good.

In addition, conventionally, a barrier is installed to block the space where asbestos is constructed from the outside, but when the pressure inside the barrier is closed, the pressurization is not smoothly removed, and the barrier is torn or sealed and the asbestos particles are opened. Is leaked to the outside there is a problem causing asbestos damage.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention, by modifying the surface of the asbestos hydrophilicity to attach and penetrate asbestos during the atomization of colloidal silica solution is quick, easy and colloidal By allowing the silica solution to be evenly and deeply penetrated into the asbestos product, it is to provide a method for fixing asbestos particles to achieve smooth and firm adhesion of asbestos particles to prevent separation or scattering.

Another object of the present invention is to remove moisture and oil contained in the compressed air, so that when the atomization, asbestos particles to facilitate the adsorption on the surface of asbestos to facilitate the brown movement of the solution for fixing the asbestos particles It is to provide an atomizer used in the method.

Another object of the present invention is to modify the surface of the building to hydrophilic prior to the demolition of the building and to atomize the colloidal silica solution so that the colloidal particles adhere to the surface and solidified after the demolition, the amount of scattering dust generated during building demolition It is to provide a method that can significantly reduce the.

The first aspect of the present invention for achieving the above object, (a) dividing the space asbestos-constructed in a predetermined interval and installing a liquid atomizing device therein and blocking using a barrier film; (b) supplying a solution containing an OH group to the atomizer to atomize and attach and penetrate the asbestos through Brownian movement, thereby modifying the surface of the asbestos to be hydrophilic; (c) supplying a colloidal silica solution to the atomizer to atomize and attach and penetrate the asbestos through Brownian motion; And (d) allowing the colloidal silica solution to solidify. The method provides a method of bonding and assembling the particles of asbestos that have been constructed using inorganic materials.

Preferably in the first aspect, the solution containing the OH group may be a mixture of water, IPA and KOH.

In the first aspect, preferably, the colloidal silica solution may be at least pH 8.

In the first aspect, preferably, the mixing ratio of water and IPA is 1: 2 to 2: 1 by volume, and the KOH may be 0.01 to 2 wt% by weight of the total mixture.

In the first aspect, preferably, the air supplied to the atomizing device may be dehumidified and degreased.

In the first aspect, preferably, the blocking membrane may be provided with at least one pressurization removing device for removing the pressurization pressure so that the pressure in the blocking membrane maintains a predetermined pressure.

In the first aspect, preferably, the pressurization removing device may be provided with a filter capable of removing asbestos particles.

In addition, the second aspect of the present invention for achieving the above another object, the movable means; An air compressor mounted on one side of the moving unit and configured to form compressed air, and a compressed air distributor configured to distribute compressed air formed from the air compressor; Dehumidification and degreasing to remove moisture and organic matter in the compressed air formed and supplied between the air compressor and the compressed air distributor; A storage container mounted on the other side of the moving unit and storing a solution or a colloidal silica solution containing an OH group; It is to provide a atomizing device comprising a; sprayer for atomizing a solution or colloidal silica solution containing an OH group is located on one side of the storage container supplied from the storage container to the workspace asbestos is located.

In the second aspect, preferably, the nebulizer may be formed with one or more nozzles to atomize the solution containing the OH group or the colloidal silica solution in one or more directions.

Preferably in the second aspect, the nebulizer may be installed in more than one stage.

In addition, the third aspect of the present invention for achieving the above object, (a) dividing the space of the building to be removed into a predetermined section and installing a liquid atomizing device therein; (b) supplying a solution containing OH groups to the atomizer to atomize and adhere to and penetrate the surface of the building through Brownian movement, thereby modifying the surface of the building to be hydrophilic; (c) supplying a colloidal silica solution to the atomizer to atomize and attach and penetrate the surface of the building through Brownian motion; And (d) allowing the colloidal silica solution to solidify; to provide a method for reducing scattering particles generated during building demolition.

In the third aspect, preferably, the divided space may be blocked by a blocking film.

In the third aspect, preferably, the surface of the building may be a surface on which asbestos is installed.

According to one embodiment of the present invention, by modifying the surface of the asbestos hydrophilically through a solution containing an OH group, the colloidal silica solution is attached to the asbestos quickly and easily, the penetration is evenly and deeply so that the asbestos particles are firmly It is effective to plan a fixation.

In addition, according to another embodiment of the present invention, by installing a pressure removing device to maintain the inside of the barrier membrane at a constant pressure state, by preventing the damage or opening of the barrier membrane due to high pressure to prevent the outflow of asbestos particles. We can plan.

Further, according to still another embodiment of the present invention, the moisture and oil contained in the compressed air can be removed to facilitate the Brownian movement of the solution, thereby making it easier to adsorb the colloidal silica solution to the surface of asbestos.

Further, according to another embodiment of the present invention, the colloidal silica solution can be adsorbed and fixed to the surface of the building prior to the demolition of the building, thereby significantly reducing the scattering dust generated during the demolition of the building. And can be greatly improved, especially in the case of asbestos-installed building, since the asbestos is fixed after being removed, there is an advantage that can significantly reduce the cost of preventing asbestos scattering.

1 is a flow chart showing a method for fixing asbestos particles according to a preferred embodiment of the present invention.

2 is a view schematically showing a separation state of the atomizing device according to a preferred embodiment of the present invention.

3 is a view showing a combined state of FIG.

4 is a view schematically showing a state in which asbestos particles are fixed by using an atomization apparatus according to a preferred embodiment of the present invention.

5A is a view showing a state before coating asbestos particles with a colloidal silica solution.

FIG. 5B is for comparison with FIG. 5A and illustrates a state after asbestos particles are coated with a colloidal silica solution. FIG.

FIG. 6 is a view showing a state in which a left side is deposited on a colloidal silica solution after modifying the surface of asbestos with hydrophilicity based on a dotted line, and the right side does not modify the surface of asbestos with hydrophilicity. It is a figure which showed the state immersed in the colloidal silica solution without.

FIG. 7 is a diagram illustrating a state in which the colloidal silica solution is atomized with an atomizer after the surface of the asbestos is modified to hydrophilic based on the dotted line, and the right side of the surface of the asbestos is hydrophilic. A diagram showing a state in which the colloidal silica solution was atomized with an atomizer without modification.

FIG. 8 is a diagram illustrating a three-dimensional state so that the state of FIG. 7 may be more specifically understood.

Hereinafter, a preferred embodiment of the asbestos particle fixing method according to the present invention and the atomization device used therein will be described in more detail with reference to the accompanying drawings.

Here, the components having the same function in all the drawings below are repeated descriptions using the same reference numerals, and the following terms are defined in consideration of functions in the present invention, which is a unique commonly used It should be interpreted as meaning.

As shown in Figures 1 to 8, the asbestos particle fixing method of the present invention (a) asbestos apparatus for atomization (spraying) of the working space is divided into a predetermined section and a liquid therein (100) After installing the block using the blocking film 200. (S10)

Here, the atomizer 100 is an electric automatic atomizer to suck the liquid by the compressed air supplied from the air compressor 150 to spray the droplet of the average particle diameter of 10㎛ or less, that is, fog type.

The work space is a state in which air is not allowed to pass through the blocking space 200 and the airtight (氣密: all four sides are blocked tightly, ie, external air pressure) to prevent external leakage of asbestos particles during asbestos particle sticking operation. It is a space where asbestos is blocked to achieve the state.

In addition, the barrier layer 200 has airtightness (氣密 性) to completely block the work space from the outside, and has water resistance to prevent the wetting from the liquid to be atomized, and to facilitate installation and removal It is preferable to form a vinyl material which is light and easy to reduce volume and inexpensive, and transparent or semitransparent so that the working condition of the workspace can be roughly understood.

In addition, the blocking film 200 is provided with at least one pressurization removal device 210 for removing the external pressurization pressure so that the pressure in the workspace maintains a predetermined pressure.

Accordingly, even if the compressed air used in the atomization operation of the liquid flows into the working space to increase the pressure, the external pressure introduced by the pressurization removing device 210 is removed to maintain a predetermined constant pressure state at all times. It is possible to prevent the outflow of asbestos particles that may occur as the 200 is torn or the sealing portion is opened apart.

In addition, the pressurization removing device 210 is preferably provided with a filter to communicate air and filter out asbestos particles so as to completely remove asbestos particles that may occur during communication of compressed air.

In addition, the pressurization removing device 210, a diaphragm valve (orifice) or the like formed in a small size to allow the compressed air to flow into and out of the workspace 100 may be applied.

Therefore, it is possible to prevent the secondary outflow of asbestos particles by preventing the outflow of asbestos particles during the asbestos particle sticking operation.

Next, (b) the OH group (hydroxyl group: hydroxyl group, hydroxyl group -OH: in the atomizer 100) is a monovalent (containing a sodium hydroxide in an inorganic compound, NaOH in an organic compound, ethyl alcohol CH₃ CH₂ OH in an organic compound ( Supplying a solution containing a) of step iii) to atomize to attach and penetrate the asbestos through the Brownian movement, to modify the surface of the asbestos to hydrophilic. (S20)

The solution which hydrophilically modifies the surface of the asbestos is a solution containing an OH group, preferably made of a mixture of water, IPA and KOH.

The mixing ratio of the water and IPA is 1: 2 to 2: 1 by volume ratio, and the KOH is preferably 0.01 to 2% by weight in the weight ratio of the entire mixture.

Here, the IPA is a chemical of the molecular formula C3H8O reduced isopropyl alcohol (proso-2-ol, 2-propanol), is colorless, flammable, without dissolving nonpolar substances and at the same time leaving no magnetic stain There is a feature that evaporates easily.

The KOH is represented by the chemical formula as potassium hydroxide, that is, potassium hydroxide.

The solution containing the OH group having such a configuration is sprayed to form a mist form of 10 μm or less by the atomizer 100, and each particle performs an irregular brown movement while staying in the workspace, and the ceiling in the workspace, It is evenly attached to the asbestos surface installed on the wall and soaks into hydrophilicity.

Accordingly, the asbestos is able to penetrate the colloidal silica solution atomized by the atomizer 100 more quickly and deeply.

Next, (c) the colloidal silica solution is supplied to the atomizer 100 to atomize and adhere to the asbestos through Brownian movement (S30).

The colloidal silica solution is preferably formed in an aqueous solution in the form of water glass. In other words, the compound component is ionized in water and is not a particle-shaped water dispersion. Wherever water can penetrate, the compound component is rapidly and evenly disposed in the fine cracks of asbestos together with water as a solvent. Because it can penetrate quickly.

Herein, "water" for making a water glass-like aqueous solution may be used alone or as a suitable mixture of at least one selected from tap water, industrial water, natural water, distilled water, ion-exchanged water, and the like. In particular, it is preferable to use water in which water molecule clusters are refined by treatment with ultrasonic waves, magnetic force, or the like, referred to as "nano water" or the like.

The reason for this is that when water, clusters of water, industrial water, natural water, distilled water, and ion exchange water are used, the water glass cluster is made of water with finer water molecules, so that even at the same concentration, the liquidity becomes very high, and the permeability of the Asbestos fibers is increased. This is because it becomes favorable.

In addition, the colloidal silica solution, consisting of silica nanoparticles of 10 ~ 20nm size, is made of an alkaline pH of 8 or more.

In addition, as long as the colloidal silica solution has an appropriate viscosity capable of atomizing (fog) the atomizer 100 and is rich in properties that easily penetrate and adhere to asbestos, a variety of materials may be used.

The colloidal silica solution of this configuration can evenly penetrate at least 2-3 cm deep from the asbestos or board-like asbestos surface.

Next, (d) to allow the colloidal silica solution to solidify. (S40)

After the atomization of the colloidal silica solution, if the colloidal silica solution is solidified (cured) as time passes, asbestos particles are firmly fixed, the asbestos particles are scattered or suspended in the air to prevent the asbestos particles from falling out Will be. Therefore, secondary contamination or threat due to detachment of asbestos particles can be prevented.

On the other hand, the atomizing device 100 according to the present invention is composed of a compressed air distributor 110, dehumidification and degreasing 120, storage container 130 and the atomizer 140.

The compressed air distributor 110 compresses and produces air, and stores the air at high pneumatic pressure and supplies the air inlet 111, which receives compressed air from the air compressor 150, which is a machine that supplies the air as needed. Three first outlets 112, a second outlet 113, and a third outlet 114 that supply the compressed air to the first atomizer 141, the second atomizer 142, and the storage container 130, respectively. Is formed.

In addition, the hose (H) connecting the compressed air distributor 110 and the sprayer 140 has a wheel-shaped opening and closing lever (not shown) for adjusting the amount (pressure) of compressed air discharged to the sprayer 140. Preferably, a pressure gauge (not shown) for checking the pressure of the discharged compressed air is provided.

The dehumidifying and degreasing 120 may be composed of a filter, such as paper, wool, degreasing fibers, etc., which can absorb moisture and organic (oil), or may be composed of a device such as a heater or an organic remover.

The dehumidification and degreasing agent 120 removes moisture and organic matter in the compressed air that is formed and supplied between the air compressor 150 and the compressed air distributor 110.

Therefore, the compressed air supplied through the compressed air distributor 110, the moisture and organics are removed when mixed with a solution containing OH groups or colloidal silica solution nozzles (141a), (142a) of the sprayer 140 Since it is light because there is no impurity during atomization, brown movement can be made more smoothly, and easy penetration into asbestos can be achieved, and chemical stability of colloidal silica solution is ensured.

The storage container 130 accommodates a solution containing an OH group for modifying asbestos or a colloidal silica solution for solidifying asbestos particles, and has a first outlet 112 of the compressed air distributor 110 on an upper surface thereof. ), The first outlet 121, the second valve 122, and the third valve 123, through which the compressed air supplied through the second outlet 113 and the third outlet 114 are connected by a connection hose. Is formed.

Here, the first valve 121 and the second valve 122 is provided with an opening and closing lever (not shown) for introducing or blocking the supplied compressed air, the third valve 123 is a solution containing an OH group or Pressure gauge for checking the discharge pressure of the opening / closing lever (not shown) for discharging or blocking the colloidal silica solution for solidifying asbestos particles and the colloidal silica solution for solidifying the asbestos particles or the solution containing the discharged OH group (not shown) H) is preferably provided.

The sprayer 140 atomizes a solution or colloidal silica solution including an OH group, which is located at one side of the storage container 130 and supplied from the storage container 130, into a workspace where asbestos is located.

In addition, the nebulizer 140, as well as to achieve the atomization work in the interior or exterior of the space in which the asbestos product is installed, that is to achieve one or more stages to be respectively installed in the interior and exterior, that is, the first nebulizer 141 And the second atomizer 142 is preferable.

The first nebulizer 141 and the second nebulizer 142 may include one or more nozzles 141a and 142a to atomize a solution containing an OH group or a colloidal silica solution in one or more directions, for example, a rectangular parallelepiped shape. ) Is formed.

And, the sprayer 140 is fixed to the support 160 through the bracket 143 in order to atomize in more than one direction.

The atomizing device 10 having such a configuration is preferably mounted on the moving means 170 to enable work while moving.

Referring to the method of fixing the asbestos particles of the present invention using the atomization device configured as described above as follows.

First, a solution containing an OH group (hydroxyl group: hydroxyl group, hydroxyl group -OH: monovalent group contained in caustic soda NaOH in inorganic compounds, ethyl alcohol CH₃CH₂OH in organic compounds, etc.) Was atomized using an atomizer 100 to have an average particle diameter of 10 μm or less.

The solution containing the atomized OH group stays in a mist form and adheres to and penetrates asbestos through Brownian movement to modify the surface of the asbestos to be hydrophilic.

Next, the colloidal silica solution was atomized to have an average particle diameter of 10 μm or less using the atomizer 100.

The atomized colloidal silica solution was allowed to adhere and penetrate into the hydrophilic modified asbestos through Brownian movement while staying in the mist form.

Before and after coating the particles of asbestos in this manner, the results are shown in FIGS. 5a and 5b before coating with the colloidal silica solution, which is roughly white and shows a protruding state where asbestos particles are easily released. It can be seen.

After coating the asbestos particles with the colloidal silica solution, it can be seen that the color is roughly purple and the asbestos particles are firmly fixed.

In addition, as a result of immersing the surface of asbestos hydrophilically modified asbestos and unmodified asbestos in a colloidal silica solution using a solution containing an OH group,

 In the case of asbestos which is hydrophilically modified asbestos surface using a solution containing an OH group, it can be seen that the colloidal silica solution penetrates deeply and firmly fixes the asbestos particles.

However, in the case of asbestos without hydrophilic modification of the asbestos surface, it can be seen that the colloidal silica solution is slightly infiltrated and the fixed portion of the asbestos particles is shallow.

In addition, as a result of spraying the colloidal silica solution sprayed using an atomizer to the asbestos and unmodified asbestos hydrophilically modified asbestos surface using a solution containing OH group,

In the case of asbestos which is hydrophilically modified asbestos surface using a solution containing an OH group, it can be seen that the colloidal silica solution penetrates deeply to fix the asbestos particles thickly.

However, in the case of asbestos without hydrophilic modification of the asbestos surface, it can be seen that colloidal silica solution is slightly infiltrated to fix asbestos particles thinly.

As described above, the photograph of the comparative example in which the asbestos surface is not modified with hydrophilicity is as follows, while the asbestos particles are not fixed well or the fixing thickness of the asbestos particles is thin. Silver asbestos particles are well fixed, or the thickness of the asbestos particles are fixed to be noticeably thick. Accordingly, it can be seen that the method for fixing asbestos particles according to the present invention is excellent in fixing the asbestos particles.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various changes, modifications, and equivalent changes to other embodiments may be made without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art to which the invention pertains.

100: atomizer 110: compressed air distributor

111: air inlet 112: first outlet

113: second outlet 114: third outlet

120: dehumidification and degreasing 130: storage container

131: first valve 132: second valve

133: third valve 140: sprayer

141: first sprayer 142: second sprayer

141a, 142a: nozzle 150: air compressor

160: prop 170: moving means

200: blocking film 210: pressurization removing device

100: atomizer 110: compressed air distributor

111: air inlet 112: first outlet

113: second outlet 114: third outlet

120: dehumidification and degreasing 130: storage container

131: first valve 132: second valve

133: third valve 140: sprayer

141: first sprayer 142: second sprayer

141a, 142a: nozzle 150: air compressor

160: prop 170: moving means

200: blocking film 210: pressurization removing device

Claims (12)

1. By assembling the particles of the asbestos construction with inorganic materials,

   (a) dividing the asbestos-constructed space into predetermined sections and installing a liquid atomizing device therein, and then blocking the asbestos using a barrier film;

   (b) supplying a solution containing an OH group to the atomizer to atomize and attach and penetrate the asbestos through Brownian movement, thereby modifying the surface of the asbestos to be hydrophilic;

   (c) supplying a colloidal silica solution to the atomizer to atomize and attach and penetrate the asbestos through Brownian motion; And

   (D) to solidify the colloidal silica solution; asbestos particle fixing method comprising a.
2. The method of claim 1,

   Asbestos particle fixing method characterized in that the solution containing the OH group is a mixture of water, IPA and KOH.
3. The method of claim 1,

   The colloidal silica solution is asbestos particle fixing method characterized in that the pH 8 or more.
4. The method of claim 2,

   The mixing ratio of the water and IPA is 1: 2 to 2: 1 by volume ratio, and the KOH is asbestos particle fixing method, characterized in that 0.01 to 2% by weight by weight of the total mixture.
5. The method of claim 1,

   Asbestos particle fixing method characterized in that the air supplied to the atomizer is dehumidified and degreasing treatment.
6. The method of claim 1,

   Asbestos particle fixing method characterized in that the barrier film is provided with at least one pressurization removal device for removing the pressurization pressure to maintain a predetermined pressure in the barrier film.
7. The method of claim 6,

   The pressure removal device is asbestos particle fixing method, characterized in that provided with a filter capable of removing asbestos particles.
8. As an atomization apparatus used for the asbestos particle fixing method according to claim 1,

   An air compressor for forming compressed air, and a compressed air distributor for distributing compressed air formed from the air compressor;

   Dehumidification and degreasing to remove moisture and organic matter in the compressed air formed and supplied between the air compressor and the compressed air distributor;

   A storage container mounted on the other side of the moving unit and storing a solution or a colloidal silica solution containing an OH group;

   And a nebulizer which is located on one side of the storage container and atomizes the solution or colloidal silica solution containing the OH group supplied from the storage container into the work space where the asbestos is located.
9. The atomizer according to claim 8, wherein the nebulizer is formed with one or more nozzles to atomize a solution containing an OH group or a colloidal silica solution in one or more directions.
10. 10. The atomizer according to claim 8 or 9, wherein the atomizer is installed in one or more stages.
11. As a method of reducing scattering particles generated during building demolition,

    (a) dividing the space of the building to be demolished into predetermined sections and installing a liquid atomizing device therein;

    (b) supplying a solution containing OH groups to the atomizer to atomize and adhere to and penetrate the surface of the building through Brownian movement, thereby modifying the surface of the building to be hydrophilic;

    (c) supplying a colloidal silica solution to the atomizer to atomize and attach and penetrate the surface of the building through Brownian motion; And

    (d) allowing the colloidal silica solution to solidify; reducing the scattering particles generated during building demolition.
12. The method of claim 11,

    The divided space is blocked by scattering film, characterized in that the scattering particles generated during the demolition of the building.

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