JP2007283242A - Treatment method and apparatus for sealing asbestos - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus which prevent a scattering of asbestos and can give a reliable and safe sealing effect of asbestos. <P>SOLUTION: A sealing execution of asbestos consists of blowing an inorganic water-soluble ceramic coating agent 26 on an asbestos layer 10 by a sprayer 11 to be solidified, supplying the solidified material to a vacuum dust collector 13 to collect produce and dust, crushing the produce-and dust-collected asbestos lump 12 by a crusher 21, kneading the crushed asbestos with the inorganic water-soluble agent by a knead mixing apparatus 23, compress molding the kneaded asbestos 27 by a mold press apparatus 28 to a block etc., drying the molded material 29 by a dryer 31, and spraying the inorganic ceramic liquid by a sprayer 32 on the whole surface of the drying-treated molded material to solidify form a coating layer in the whole periphery. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention solidifies and removes asbestos (asbestos) constructed by spraying on the ceiling or wall surface, etc., without scattering it into the atmosphere, compressing and molding this as a recycled molded product, and the entire circumference of the molded product The present invention relates to an asbestos containment processing method and apparatus which can contain asbestos by forming a solidified layer on the asbestos and detoxify the asbestos.

  As is well known, asbestos has been used as a building material, a fireproofing / insulating material, and an electrical insulating material, but its use is prohibited due to its carcinogenic potential.

  Therefore, it is necessary to treat the asbestos that has already been constructed. The treatment method is to remove the asbestos, harden it with concrete, and dispose it in the sea. Do not leave the asbestos with a plywood board. There are three methods: a method of enclosing and a method of containment in which the surface of asbestos is coated and solidified.

  The method of removing asbestos, solidifying it with concrete, and then disposing it in the sea, etc. is not perfect because there is a risk that the asbestos will scatter in the water or in the sea. The enclosure method is a temporary prevention measure, and it cannot prevent the asbestos from scattering when the building collapses due to an earthquake, etc., and it will be a fundamental solution unless the asbestos is removed and detoxified. Must not.

  Moreover, the method of solidifying the surface of asbestos is only to temporarily prevent the asbestos from being scattered, and is merely a postponement of asbestos removal work to be performed.

  In Patent Document 1, asbestos is collected by suction with a recovery hose, and the recovered asbestos is transported to a cyclone rotary crusher and packed in a compression bag, or transported to a kneading mixer by switching a switching valve and mixed with a solidified material. An apparatus for solidifying is disclosed.

  However, in this apparatus, when asbestos is sucked and collected, asbestos may be scattered, and when it is compressed and packed in a bag, it will be necessary to detoxify and dispose of it. In the solidification process by mixing, since the surface of the solidified product is not protected, it is inferior in weather resistance and may be scattered in water or in the sea.

  In Patent Document 2, asbestos waste material is mixed with almost the same weight of incineration ash of general industrial waste as a solvent, and air heated at a high temperature by a heat exchanger that uses the exhaust heat in a melting furnace having a heavy oil burner is used. Disclosed is a method and apparatus for taking out and solidifying molten slag at a temperature of about 1800 ° C. while supplying at a high speed.

However, in this method and apparatus, when asbestos waste material is collected, there is a risk that harmful substances are scattered and released into the atmosphere because no means for preventing scattering is applied to the asbestos itself.
Japanese Utility Model Publication No. 7-43605 JP-A-8-141537

  The problem to be solved by the present invention is that asbestos is scattered in the atmosphere when asbestos is collected and collected.

  Moreover, since the surface protection of the solidified asbestos is not made, the asbestos scattering due to impact cannot be prevented.

  Accordingly, the object of the present invention is to impregnate asbestos from the stage of collecting and collecting asbestos by impregnating and infiltrating the inorganic / water-soluble ceramic coating agent, which is a nano-ultrafine translucent liquid, into the asbestos and solidifying and containing it. It is an object of the present invention to provide a method and apparatus capable of preventing scattering into the atmosphere.

  Another object of the present invention is to provide a method and apparatus capable of increasing the surface hardness and preventing impact scattering of asbestos by solidifying and forming a coating layer of an inorganic ceramic liquid on the entire surface of the asbestos molded product and containing asbestos. Is to provide.

  Another object of the present invention is to provide a method and an apparatus capable of obtaining a recycled molded product by detoxifying asbestos and compressing and molding it.

In order to achieve these objects, the asbestos containment treatment method according to claim 1 of the present invention comprises spraying an asbestos with an inorganic / water-soluble ceramic coating agent, which is a nano-ultrafine particle translucent liquid, by a spraying device. A first step of impregnating and infiltrating the inside of the asbestos with the inorganic / water-soluble ceramic coating agent, and solidifying the asbestos,
A second step of collecting and collecting the solidified asbestos by a vacuum dust absorber;
A third step of finely crushing the collected and collected asbestos with a crusher;
A fourth step of charging and kneading the pulverized asbestos and the inorganic / water-soluble ceramic coating agent into a kneading mixer device;
A fifth step of compressing and molding the kneaded asbestos into a target molding by a molding press;
A sixth step of carrying out the compression-molded molding from the molding press device and drying it by a drying device;
It is characterized by a structure consisting of a seventh step in which an inorganic ceramic liquid is sprayed on the entire surface of the dried molded article by a spraying device to solidify and form a coating layer on the entire periphery and contain asbestos. is there.

  The asbestos containment processing method according to claim 2 of the present invention is characterized in that, in the seventh step, the inorganic ceramic liquid is a colored liquid.

According to a third aspect of the present invention, there is provided an asbestos containment processing apparatus by spraying an inorganic / water-soluble ceramic coating agent, which is a nano-ultrafine particle semi-transparent liquid, onto the asbestos, and applying the inorganic / water-soluble ceramic coating agent to the asbestos. A spraying device for impregnating and infiltrating the inside of asbestos to solidify it with asbestos
A vacuum dust suction device for collecting and collecting the solidified asbestos;
A crusher for finely crushing the collected and collected asbestos;
A kneading mixer device for charging and kneading the pulverized asbestos and the inorganic / water-soluble ceramic coating agent;
A molding press device for compressing and molding the kneaded asbestos into a target molding; and
A drying apparatus for drying the molded product that has been compressed and molded and carried out;
It is characterized by comprising a spraying device for containing asbestos by spraying an inorganic ceramic liquid over the entire surface of the dried molded product to solidify and form a coating layer on the entire periphery. .

  According to the first and second aspects of the invention, since the inorganic / water-soluble ceramic coating agent sprayed on asbestos is a nano-ultrafine particle translucent liquid, the fine particles themselves have a binder (adhesive) function. Asbestos is deeply impregnated and penetrated into the entire interior of the asbestos while intermolecular bonding, and then integrated and solidified with the asbestos, so that the asbestos is prevented from being scattered when the asbestos is collected and collected by the vacuum dust absorber. Provides safe and secure containment of asbestos.

  The collected and collected asbestos is finely crushed, mixed with an inorganic / water-soluble ceramic coating agent, compressed and molded, and the entire surface of the molded product is covered with a solidified inorganic ceramic layer to contain the asbestos. Therefore, the surface hardness is increased, and the effect of preventing impact scattering of asbestos is obtained.

  In addition, asbestos-treated products are compressed and molded, and an inorganic ceramic coating layer is solidified on the entire surface of the molded product to contain asbestos, so that it can be used as a recycled molded product such as a pollution-free block. can do.

  The best mode for carrying out the invention according to the present application will be described below together with its operation with reference to the drawings.

  FIG. 1 is a block diagram of an embodiment of an asbestos containment process according to the present invention, FIG. 2 is a system diagram of an embodiment of an asbestos containment process apparatus according to the present invention, and FIG. FIG. 4 is a schematic front view and FIG. 4 is a side view of the same.

  In these drawings, for example, in order to process the asbestos layer 10 sprayed on the ceiling, first, the asbestos layer 10 is impregnated with a solidifying agent 1 in FIG.

The solidifying agent is an inorganic / water-soluble ceramic coating agent (IDT Nippon Sheet Co., Ltd.
Celaria).

  As shown in FIG. 2, this solidifying agent, which is an inorganic / water-soluble ceramic coating agent, is sprayed and sprayed onto the surface of the asbestos layer 10 at a relatively low pressure of, for example, about 5 kilo-pressure, as shown in FIG. Let

  Then, since the inorganic / water-soluble ceramic coating agent is nano-ultrafine particles, it is deeply impregnated into the asbestos layer 10 while intermolecularly bonding, and thereafter, it is integrated with the asbestos layer 10 and solidified.

  Next, in a cured state that is not completely hardened by the inorganic / water-soluble ceramic coating agent, asbestos 12 is removed from the asbestos layer 10 in FIG.

  The asbestos 12 is collected and collected by a vacuum dust absorber 13 as shown in FIG.

  The vacuum dust absorber 13 includes a crusher 14 having a plurality of crushing blades 15 protruding vertically, a dust collection hose 16 connected to the crusher 14, a dust collection tank 17 to which the dust collection hose 16 is connected, The main body 19 includes a vacuum dust absorber main body 19 connected to the dust tank 17 via a pipe 18 and a compressor 20 as an air source connected to the main body 19.

  Although not particularly illustrated, dust removing filters are attached to necessary parts such as the pipe 18 and the main body 19, and the air sucked through these filters is cleaned.

Then, when the compressor 20 is operated in a cured state where the asbestos layer 10 is not completely hardened, a suction force is generated on the suction side, and the suction force passes through the main body 19, the pipe 18, the dust collection tank 17, and the dust collection hose 16. It acts on the crusher 14. Then, asbestos layer 1
0 is sucked and peeled off, and the peeled asbestos is moderately crushed by a plurality of grinding blades 15 and is not clogged in the dust collecting hose 16, and the asbestos lump 12 is collected and collected in the dust collecting tank 17. The

  The corners of the ceiling and the asbestos layer remaining without peeling off are removed manually by the operator, and are collected and collected in the dust collection tank 17 by the vacuum dust suction device 13.

  Asbestos is collected and collected by these vacuum dust absorbers 13, the asbestos layer 10 is sprayed and solidified integrally with the asbestos by an inorganic / water-soluble ceramic coating agent that is deeply impregnated and penetrated into the entire interior of the asbestos. Therefore, scattering of asbestos is prevented, and asbestos can be collected and collected safely and safely.

  The asbestos lump 12 collected and collected in the dust collection tank 17 is crushed at 3 in FIG. 1 in order to make it finer, eliminate voids and give a solidified feeling.

  As shown in FIG. 2, the asbestos lump 12 is pulverized by a known pulverizer 21 equipped with a pulverizing roller or the like.

  The asbestos 22 finely pulverized by the pulverizing apparatus 21 is kneaded with the inorganic / water-soluble ceramic coating agent at 4 in FIG.

  The kneading of the pulverized asbestos 22 and the inorganic / water-soluble ceramic coating agent 26 is performed by a known kneading mixer device 23 having a kneading mixer and a screw 24 as shown in FIG. Then, the inorganic / water-soluble ceramic coating agent 26 from the tank 25 set in accordance with the discharge amount of the pulverized asbestos 22 is appropriately kneaded.

  Next, the kneaded asbestos 27 kneaded by the kneading mixer device 23 and extruded by the screw 24 is compressed and molded at 5 in FIG.

  As shown in FIG. 2, this compression / molding is performed by a known compression press device 28 that compresses and molds with upper and lower wooden frames or the like.

  Next, the compacted and molded product 29 is taken out of the compression press device 28 and dried at 6 in FIG.

  Since the molded product 29 is easily broken, as shown in FIG. 2, the molded product 29 is unloaded from the compression press device 28 while being placed on the PP plate 30, and is dried by passing through the arch dryer as the drying device 31. .

  Next, the dried molded product 29 is subjected to solidification processing of an inorganic ceramic on the surface at 7 in FIG.

  As shown in FIG. 2, the solidification process is performed by spraying a colored inorganic ceramic liquid onto the entire surface of the molded article 29 by a known spraying device 32 to solidify and form a colored coating layer 33 of an inorganic ceramic around the entire periphery. Asbestos is contained, and as a result, it can be diverted as recycled moldings 8 such as blocks.

  As described above, the asbestos containment process is performed by the spraying device 11, the vacuum dust suction device 13, the pulverizing device 21, the kneading mixer device 23, the compression press device 28, the drying device 31, and the spraying device 32. These devices are integrated. As a result, it may be loaded onto a truck, moved to the site, and performed on the truck, or each device is divided into several device groups and loaded onto the track, and this device group is linked and assembled at the site. Then, the work may be performed.

It is a block diagram in one Example of the containment processing method of asbestos which concerns on this invention. It is a systematic diagram in one Example of the containment processing apparatus of asbestos which concerns on this invention. It is a schematic front view of a crusher. It is a side view same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Asbestos layer 11 Spraying device 12 Asbestos lump 13 Vacuum dust absorber 14 Crusher 15 Crushing blade 16 Dust collection hose 17 Dust collection tank 18 Piping 19 Vacuum dust collector main body 20 Compressor 21 Crushing device 22 Crushing asbestos 23 Kneading mixer device 24 Screw 25 Tank 26 Inorganic / water-soluble ceramic coating agent 27 Kneaded asbestos 28 Compression press device 29 Molded product 30 PP plate 31 Drying device 32 Spraying device 33 Colored coating solidified layer of inorganic ceramic

Claims (3)

Asbestos is sprayed with an inorganic / water-soluble ceramic coating agent, which is a nano-ultrafine semi-transparent liquid, by a spraying device, and the inorganic / water-soluble ceramic coating agent is impregnated and penetrated into the asbestos to be integrated with asbestos. A first step of solidifying;
A second step of collecting and collecting the solidified asbestos by a vacuum dust absorber;
A third step of finely crushing the collected and collected asbestos with a crusher;
A fourth step of charging and kneading the pulverized asbestos and the inorganic / water-soluble ceramic coating agent into a kneading mixer device;
A fifth step of compressing and molding the kneaded asbestos into a target molding by a molding press;
A sixth step of carrying out the compression-molded molded product from the molding press device and drying with a drying device;
An asbestos containment process comprising a seventh step of applying asbestos containment by solidifying and forming a coating layer on the entire circumference by spraying an inorganic ceramic liquid on the entire surface of the dried molded product with a spraying device. The method for containing asbestos according to claim 1, wherein the inorganic ceramic liquid is a colored liquid in the seventh step. In order to spray and spray inorganic / water-soluble ceramic coating agent, which is a nano-ultrafine semi-transparent liquid, on asbestos and impregnate and penetrate the inorganic / water-soluble ceramic coating agent inside the asbestos to solidify it with asbestos. Spraying device,
A vacuum dust suction device for collecting and collecting the solidified asbestos;
A crusher for finely crushing the collected and collected asbestos;
A kneading mixer device for charging and kneading the pulverized asbestos and the inorganic / water-soluble ceramic coating agent;
A molding press device for compressing and molding the kneaded asbestos into a target molding; and
A drying apparatus for drying the molded product that has been compressed and molded and carried out;
Asbestos containment characterized by comprising a spraying device for spraying an inorganic ceramic liquid over the entire surface of the dried molded product to solidify and form a coating layer on the entire periphery and contain asbestos. Processing equipment.

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