JP3685766B2 - Small incinerator dismantling method and dismantling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, demolishing method for dismantling a small incinerator and relates its setting Bei.
[0002]
[Prior art]
Incinerators for incinerating waste include large and small incinerators ranging from large incinerators operated by local governments to medium to small incinerators installed in private facilities. In these incinerators, the generation of dioxins when burning waste containing chlorine-based elements is an environmental problem, and legal regulations regarding the structure and operation of incinerators that cause dioxins to be generated And legal regulations on inspection and dismantling work to prevent the adverse effects of dioxins are becoming stricter.
[0003]
When dismantling an existing incinerator for removal or modification, harmful substances contained in the incineration ash may scatter and cause environmental pollution. In addition, if the dismantling work is performed with the periphery of the incinerator left open, dust generated during the work is scattered, which adversely affects the surrounding environment. Therefore, it is common practice to surround the incinerator to be demolished with a scaffold and a sheet to prevent dust from scattering, and to dismantle the incinerator and work space during dismantling while suppressing dust scattering. It has been broken.
[0004]
However, even if the incinerator is surrounded by a sheet, the upper part is in an open state, so it is impossible to stop the scattering of fine dust that tends to rise on the wind. In addition, a large amount of water is necessary during the dismantling work to suppress the scattering of dust, so a large amount of water is necessary, so that the spilled water does not flow into adjacent land or roads and have an adverse effect. It is necessary to take measures for drainage.
[0005]
As a demolition method that eliminates the need for sprinkling during demolition work and eliminates the risk of harmful substances and dust scattering, the applicant has to surround the surroundings of buildings such as incinerators with a sheet. A construction method for dismantling a building was developed in the state where a blocked construction space was formed and the atmospheric pressure in the construction space was kept lower than atmospheric pressure, and a patent application was filed as Japanese Patent Application No. 2000-233326. According to this construction method, the construction space that is blocked from the outside air is always kept at a negative pressure, and dismantling work can be performed so that the air in the construction space does not diffuse outside. There is an effect that dust generated therein is not scattered from the construction space.
[0006]
[Problems to be solved by the invention]
However, the above demolition method is suitable for the demolition of large-scale buildings such as large incinerators. It is a method for enclosing the periphery of the building, the struts for stretching the sheet, and the construction space. Equipment such as an air pump to keep the atmospheric pressure below atmospheric pressure, a passage for entering and exiting the construction space, and a suction device for collecting and collecting suspended matter in the construction space are necessary. It is necessary to wear protective clothing and a dust mask when working in a work space.
[0007]
In the case of a small incinerator, as in the case of a large incinerator, it is extremely uneconomical in terms of cost to perform disassembly work by installing a set of necessary equipment at the incinerator installation location. However, unless such devices are installed, it is impossible to deal with harmful substances such as dioxins.
[0008]
Therefore, in the present invention are those which as in the case of large incinerators, providing dismantling method and its equipment capable of performing disassembling operations while avoiding adverse effects of toxic substances and dust against small incinerators .
[0009]
[Means for Solving the Problems]
The dismantling method of the small incinerator of the present invention was removed from the installation site without disassembling the existing small incinerator including the basic part, transported to the dismantling construction base, and cut off from the outside air installed in the dismantling construction base. It is a method of dismantling the incinerator in the construction space.
[0010]
When dismantling a small incinerator, if it is to be dismantled at the incinerator installation location, it will be necessary to install construction space and equipment to avoid the harmful effects of harmful substances and dust each time. If it is transported to the dismantling construction base and dismantled, the construction space and equipment can be fixed, so the equipment cost is low.
[0011]
When removing the incinerator from the installation site and transporting it to the demolition base, the inside of the incinerator is moistened and the entire furnace is wrapped in a synthetic resin sheet so that no harmful substances or dust are scattered during transport. It is desirable to do.
[0012]
The dismantling facility for dismantling the incinerator includes a dismantling work room with an open / close door with an internal volume that can accommodate a small incinerator that has been removed and transported from the installation location without disassembling, including the foundation part , and shutting off the outside air It is desirable that the facility includes a worker entry / exit passage having a function, a suction device that sucks air in the dismantling work chamber, and a duct that communicates the dismantling work chamber and the suction device. It is desirable that the demolition work chamber is equipped with a high-pressure water cleaning device for cleaning the inside and outside of the furnace before and after dismantling. In addition, the dismantling work room may be designed and manufactured as a dedicated device, or may be manufactured by modifying an existing device such as a freight car that is no longer needed. It is desirable that the worker access passage has, for example, a double door structure so that the worker can enter and leave the dismantling work room while being shut off from the outside air even during the dismantling work. The suction device preferably includes, for example, an air pump and a motor, and a dust collecting device for collecting and removing the suspended matter sucked through the duct.
[0013]
By installing such demolition equipment at the demolition work base, it is possible to remove the small incinerator to be dismantled from the installation location, transport it to the demolition work base, accommodate it in the demolition work room, and dismantle it . Since the dismantling work room can be shut off from the outside air even during the dismantling work, it is possible to prevent the harmful effects of harmful substances remaining in the incinerator and dust generated during the dismantling.
[0014]
In addition, as a means to remove the existing small incinerator including the foundation part from the installation site without dismantling, the space around the foundation part to which the incinerator is fixed is excavated and removed to form a space. It is desirable to employ a construction method in which a lifting auxiliary tool is fixed to the lower part of the foundation part using a wire, a wire is locked to the lifting auxiliary tool, and the incinerator with the foundation part is lifted and removed.
[0015]
By using such a removal method , it is possible to transport the incineration ash that may contain harmful substances such as dioxin to the demolition work base while being contained in the furnace without dismantling the incinerator. Here, as the lifting assisting tool, an assisting tool in which H-shaped steel members are combined in a quadrilateral shape can be used. This auxiliary tool can be quickly started when the necessity for removal arises by preparing auxiliary tools of several sizes according to the size of the target incinerator.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing an equipment configuration of a demolition work base in an embodiment of the present invention, FIG. 2 (a) is an explanatory view of an opening / closing door of a worker access passage, and FIG. It is.
[0017]
The dismantling equipment of the small incinerator in this embodiment includes a dismantling work chamber 1 for cleaning and dismantling the incinerator, a worker entrance / exit passage 2 having an outside air blocking function, and a suction device for sucking and removing dust in the dismantling work chamber 1. 3, a high-pressure water washing machine 4 for washing the incinerator, a clean room 5 for cleaning the body and clothes when an operator enters and leaves, and dust in the washing water after washing the incinerator and the dismantling work chamber 1 And a washing water treatment device 6 for removing dioxins.
[0018]
In this embodiment, the dismantling work room 1 uses an apparatus obtained by modifying a freight train for a freight train. In addition to the open / close doors 11 and 12 on the side of the wagon, an open / close door 13 is provided on the ceiling, and the open / close door 13 is opened and a small incinerator is taken in and out by a crane. If the dimensions of the open part of the ceiling are about 2500 mm in width and about 3500 mm in length, most of the so-called small incinerator can be put into and out of the internal space 14 of the dismantling work chamber 1 from this open part. A set of tools necessary for incinerator dismantling is prepared in the dismantling work chamber 1, and the open / close doors 11 to 13 are closed until the dismantling is completed so that the sealed state can be maintained.
[0019]
The worker entry / exit passage 2 is a passage having a double door structure of an opening / closing door 21 leading to the clean room 5 and an opening / closing door 22 leading to the dismantling work chamber 1, and when the worker enters / exits the worker entry / exit passage 2 from the clean room 5. And, dust and dioxin in the dismantling work chamber 1 are prevented from leaking directly into the clean room 5 when entering and leaving the worker access passage 2 from the dismantling work chamber 1.
[0020]
The suction device 3 includes an air pump 31, a motor 32 that drives the air pump 31, and a dust collector 34 that collects and removes suspended matters in the air sucked through a duct 33. As the air pump 31 and the dust collector 34, a conventionally known device can be used. During the dismantling operation of the incinerator in the dismantling work chamber 1, the suction device 3 is continuously operated to suck the air in the dismantling work chamber 1, and the dust collector 34 collects and removes dust and the like. When the motor 32 is operated, the air pump 31 sucks air in the dismantling work chamber 1, so that the dismantling work chamber 1 is always kept at a negative pressure, and outside air is dismantled through a slight gap between the opening and closing doors 11-13. Air is exchanged by being introduced into the internal space 14 of the chamber 1. For this reason, the interior space 14 can be maintained in a state suitable for work, and dust or harmful substances generated during the dismantling operation of the incinerator are scattered from the interior space 14 of the dismantling work chamber 1 to the outside. There is no. An operator entry / exit passage 2 can be used for the entry / exit of workers into / from the internal space 14 during the dismantling work, the loading / unloading of construction machinery / equipment, the removal of waste materials after the dismantling, etc. without causing an increase in the atmospheric pressure in the internal space 14. Can be done via.
[0021]
The high-pressure water washer 4 is a device for spraying high-pressure water to clean the incinerator before and after dismantling, and the incinerator, the dismantling work chamber 1 and waste materials carried into the dismantling work chamber 1 are washed with high-pressure water. . The high-pressure water washing machine 4 itself is a known device, and the washing water after washing is sent to the washing water treatment device 6 through a pipe (not shown), and the processing described later is performed to remove dust and dioxins.
[0022]
The clean room 5 is a conventionally known device that is installed to protect the safety and hygiene of people engaged in work in a dust-contaminated area. In this embodiment, an air shower, a hot water shower, various protective equipment, a changing room, etc. It has.
[0023]
The cleaning water treatment apparatus 6 is an apparatus that removes dust and dioxins contained in cleaning water after cleaning the incinerator before disassembly and the internal space 14 after disassembly and waste materials in the internal space 14 of the dismantling work chamber 1. In the present embodiment, a heavy metal collection treatment tank 61, a coagulation sedimentation tank 62, and an activated carbon treatment tank 63 are provided, and the heavy metal collection treatment tank 61 is used for washing water sent from the dismantling work chamber 1 through a pipe (not shown). An appropriate amount of a collection agent (for example, Diaflox MT-1006 (trade name) manufactured by Diamitricks Co., Ltd.) is added to collect heavy metals, and then an appropriate amount of ferric chloride solution and caustic soda solution are collected in the coagulation sedimentation tank 62. The water quality is returned to neutrality, and a polymer flocculant (for example, Diaflox AP120C (trade name) manufactured by Diatrix Co., Ltd.) is added in an appropriate amount to perform a coagulation precipitation treatment. Next, the supernatant water of the coagulation sedimentation tank 62 is sent to the activated carbon treatment tank 63 to obtain cleaning water that satisfies the discharge standards defined by the relevant laws and regulations. This washing water may be reused for high-pressure water washing.
[0024]
The dismantling method of the small incinerator using the equipment having the above configuration will be described. In the present embodiment, the demolition facility comprising the group of devices shown in FIG. 1 is used as a demolition work base, and the incinerator to be dismantled is removed from the installation site and transported to the demolition work base, and the incinerator is disposed in the demolition work room 1. And dismantle. During the dismantling work, all the doors 11, 12, 13 of the dismantling work chamber 1 are closed to shut off the internal space 14 from the outside air, and the dismantling work is performed with the internal device 14 held at a negative pressure by operating the suction device 3. Do.
[0025]
During the dismantling operation, the incinerator and the internal space 14 are cleaned by the high pressure water washer 4 as necessary. The washing water after washing is rendered harmless by the washing water treatment device 6. Since the suction device 3 is continuously operated during the dismantling operation, the internal space 14 is maintained in a state suitable for the operation, and the internal space 14 is maintained at a negative pressure, so that the internal air leaks to the outside. There is nothing.
[0026]
When the dismantling work is completed, the worker passes through the worker access passage 2 having a double door, and in the clean room 5, the body and clothes are washed by an air shower and a hot water shower, and then the worker leaves the facility. In this way, the incinerator can be dismantled at the demolition work base without releasing dust and harmful substances and in a safe working environment for workers.
[0027]
Next, the method for removing the existing incinerator will be described. 3 to 5 are explanatory views of a method for removing an existing incinerator, in which (a) in FIG. 3 is a perspective view showing excavation of the ground around the incinerator, (b) is a cross-sectional view thereof, and FIG. 4 is a lifting aid. FIG. 5 is a perspective view showing a state in which the incinerator is lifted up.
[0028]
As shown in FIG. 3, the incinerator removal method in the present embodiment forms a space Ga by partially excavating and removing the earth and sand around the foundation 71 portion of the incinerator 7 installed on the ground G. 4 is fixed to the lower part of the foundation 71 portion using the space Ga, and the wire 10 of the lifting tool 9 is locked to the lifting aid 8 as shown in FIG. In this method, the incinerator 7 with the foundation 71 is lifted by a crane or the like and removed from the installation location.
[0029]
Here, as the lifting assisting tool 8, as shown in FIG. 4, an assisting tool in which long side members 81a, 81b and short side members 82a, 82b of H-shaped steel are combined in a quadrilateral shape is used. Since the size of the incinerator is not constant, the lifting aid 8 is prepared by preparing several types of members having different sizes of the long side members 81a and 81b and the short side members 82a and 82b, thereby incineration having different sizes. Can correspond to the furnace. The long side members 81a and 81b and the short side members 82a and 82b are fitted into the lower space Gb of the foundation 71 portion of the incinerator 7 using the ground space Ga excavated as shown in FIG. 81b and short side members 82a, 82b are joined by bolts and nuts (not shown).
[0030]
As shown in FIG. 3A, after setting the lifting aid 8 on the lower part of the foundation 71 of the incinerator 7, the wire 10 of the lifting tool 9 is passed through the short side members 82a and 82b of the lifting aid 8. As shown in FIG. 5, it is lifted by a crane or the like, loaded into a transport vehicle, and transported to a demolition work base. By such a removal method, it is possible to transport the incineration ash that may contain harmful substances such as dioxin to the demolition work base while being contained in the furnace without dismantling the incinerator 7.
[0031]
【The invention's effect】
The present invention has the following effects.
[0032]
(1) Remove the existing small incinerator including the foundation part from the installation location without dismantling it, transport it to the demolition work base, and incinerate it in the work space isolated from the outside air installed in the demolition work base. By adopting the method of dismantling, it is no longer necessary to install a construction space and equipment to avoid the harmful effects of harmful substances and dust at the incinerator installation site each time the small incinerator is dismantled. The construction cost will be low.
[0033]
(2) As a facility for dismantling the incinerator, a dismantling work room having an open / close door with an internal volume capable of accommodating a small incinerator that has been removed and transported without dismantling, including the foundation, and outside air By installing a dismantling facility at the dismantling work base having an entrance / exit passage having a blocking function, a suction device that sucks air in the dismantling work chamber, and a duct that communicates the dismantling work chamber and the suction device, The small incinerator to be dismantled can be removed from the installation location, transported to the dismantling work base, and housed in the dismantling work room for dismantling. Since the dismantling work room can be shut off from the outside air even during the dismantling work, it is possible to prevent the harmful effects of harmful substances remaining in the incinerator and dust generated during the dismantling.
[0034]
(3) As a means to remove the existing small incinerator including the foundation part from the installation site without dismantling , the earth and sand around the foundation part to which the incinerator is fixed is partially excavated and removed to form a space. By using this space, a lifting auxiliary tool is fixed to the lower part of the foundation part, a wire is locked to the lifting auxiliary tool, and the incinerator with the foundation part is lifted and removed to adopt an incinerator. Incineration ash that may contain harmful substances such as dioxins can be transported to the demolition work base without being dismantled.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a facility configuration of a demolition work base in an embodiment of the present invention.
2A is an explanatory view of an opening / closing door of an operator access passage, and FIG. 2B is a schematic configuration diagram of a suction device.
3A is a perspective view showing excavation of the ground around the incinerator, and FIG. 3B is a cross-sectional view thereof.
FIG. 4 is a perspective view showing a lifting aid.
FIG. 5 is a perspective view showing a state in which the incinerator is lifted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dismantling work room 11, 12, 13 Opening / closing door 14 Internal space 2 Worker entrance / exit passage 21, 22 Opening / closing door 3 Suction device 31 Air pump 32 Motor 33 Duct 34 Dust collector 4 High pressure water washer 5 Clean room 6 Washing water treatment device 61 Heavy metal collection treatment tank 62 Coagulation sedimentation tank 63 Activated carbon treatment tank 7 Incinerator 71 Foundation 8 Lifting auxiliary tools 81a, 81b Long side members 82a, 82b Short side members 9 Hanging tools 10 Wire G Ground Ga, Gb Space

Claims (3)

  Remove the existing small incinerator including the foundation part from the installation site without dismantling it and transport it to the demolition work base. Demolition method of small incinerator characterized by dismantling. Demolition work room with internal doors that can accommodate a small incinerator that has been removed and transported without dismantling, including the foundation part, a worker entry / exit passage with an outside air blocking function, and dismantling work A facility for dismantling a small incinerator comprising a suction device that sucks indoor air and a duct that connects the dismantling work chamber and the suction device. The means for removing the existing small incinerator including the foundation part from the installation location without disassembling partially excavates and removes the earth and sand around the foundation part to which the small incinerator is fixed. the auxiliary device for lifting the bottom of the base portion is fixed by using, characterized in that engages the hanger to the lifting aid is to remove by lifting the base portion with a small incinerator The method for dismantling a small incinerator according to claim 1 .

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