JP2005000848A - Method and apparatus for detoxifying spent filter cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for detoxifying spent filter cloth, by which the spent filter cloth with a toxic substance such as dioxins stuck thereto and used in a filtration type dust collector can be detoxified by using simple equipment. <P>SOLUTION: The apparatus is provided with a microwave irradiating mechanism 2 for irradiating the inside of a box unit 4 with a microwave and a conveying mechanism 3 for conveying the spent filter cloth R used in the filtration type dust collector. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for detoxifying used filter cloth used in a filtration dust collector and attached with harmful substances such as dioxins.
[0002]
[Prior art]
Conventionally, the used filter cloth used in the filtration dust collector is incinerated in an incinerator in the facility where the dust collector is installed, or outsourced to an industrial waste disposal contractor who has a certain license for industrial waste disposal. It was thrown into the melting furnace and processed or disposed of by landfill.
In addition, as a method for removing dioxins by the inventors of the present application, a method for removing dioxins by irradiating microwaves or ultraviolet rays at a suitable place in the transportation pipe when transporting fly ash transported by gas in the pipe is proposed. 0003
[Problems to be solved by the invention]
In order to minimize the adverse effects of dioxins on the human body in recent years, since December 1, 2002, “Ministerial Ordinance on Standards and Measurement Methods for the Amount of Dioxins Contained in Soot and Dust Related to Waste Incinerators” The concentration of dioxins contained in waste is regulated to 3 nanograms or less per gram of dust collection ash, and in principle, dioxins are also removed from landfilled waste. It became necessary to take measures to do.
In view of the above, an object of the present invention is to provide a method and an apparatus capable of detoxifying used filter cloth used in a filtration dust collector to which harmful substances such as dioxins are attached with simple equipment.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the method for detoxifying a used filter cloth according to the present invention comprises irradiating a used filter cloth used in a filter-type dust collector with microwaves for a certain period of time, and toxic substances attached to the used filter cloth. It is characterized by detoxifying.
[0005]
The present invention having the above-described configuration can reliably detoxify the used filter cloth used in the filtration dust collector by microwave irradiation.
[0006]
The second invention relates to an apparatus for carrying out the above detoxifying method for a used filter cloth. A microwave irradiation mechanism for irradiating a microwave inside a housing and a used filter cloth used in a filtration dust collector. And a transfer mechanism for transferring.
[0007]
The present invention having the above-described configuration can prevent dioxins from being exposed by sequentially feeding the used filter cloth used in the filtration type dust collector into the used filter cloth detoxification device by the transport mechanism.
[0008]
In this case, a plurality of microwave irradiation mechanisms can be provided and divided into an irradiation chamber that receives microwave irradiation and a shielding chamber that does not receive microwave irradiation.
[0009]
Thereby, it can be set as the apparatus provided with the irradiation chamber which receives the irradiation of a several microwave in detoxifying used filter cloth.
[0010]
Further, in this case, the used filter cloth detoxification device can be placed on a mobile conveyance vehicle.
[0011]
This eliminates the need for permanent installation of facilities on the site other than when replacing the filter cloth.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a dioxin removal method of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a general view illustrating a method and an apparatus for detoxifying used filter cloth according to the present invention.
[0014]
The used filter cloth detoxification device 1 according to the present invention is provided with a housing 4 having an open lower surface on a transfer mechanism 3 for transferring a used filter cloth roll R, and the inside of the housing 4 is separated by a partition wall 5. And the ceiling 8, the interior of the housing 4 is partitioned, and a shielding ceiling 6 having an open bottom surface is provided below the partition wall 5, and the shielding ceiling 6 is shielded from the transition direction of the used filter cloth roll R. In addition, the shielding member 7 is suspended, the space defined by the shielding ceiling 6 and the shielding member 7 is defined as a shielding room B, and the space defined by the ceiling 8 and the partition wall 5 is configured as an irradiation chamber A.
[0015]
A microwave irradiation device 2 is provided on the ceiling 8 of the irradiation chamber A.
One microwave irradiation device 2 may be provided in one room. When two microwave irradiation devices 2 are provided in one room, as shown in FIG. Deploy to be.
This is because when the irradiation ports are arranged in parallel, the reflected microwaves may go back to each other and destroy the inside of the microwave irradiation device 2.
[0016]
As shown in FIG. 3, the transfer mechanism 3 uses a belt conveyor or the like as shown in the figure, and arranges the used filter cloth rolls R so as to regularly and alternately enter the irradiation chamber A and the shielding chamber B. As shown in FIG. 3a is preferably provided.
[0017]
The shielding member 7 is an example of a noren-shaped curtain, but is not limited thereto, and may be an iron shutter. In this case, the shutter is configured to open and close in accordance with the transfer of the transfer mechanism 3. .
[0018]
Reference numeral 9 denotes a pusher for pushing the used filter cloth roll R onto the transfer mechanism 3, and it is preferable to use a hydraulic / pneumatic cylinder or the like.
[0019]
In the above configuration, the used filter cloth rolls R used in the filtration type dust collector are arranged in front of the pusher 9 by appropriate means, and pushed into the housing 4 of the detoxification device 1 by the pusher 9 to thereby enter the detoxification device 1. The used filter cloth roll R is fed into the detoxifying device 1 while opening the shielding member 7 'of I.
[0020]
The used filter cloth roll R that is fed first passes through the first shielding chamber B and is fed into the first irradiation chamber A. At this time, the second used filter cloth roll R enters the first shielding chamber B, and the used filter cloth roll R in the irradiation chamber A is rendered harmless by the microwave irradiated from the microwave irradiation device 2. The
[0021]
According to the experiments by the inventors to detoxify the used filter cloth roll R, in the case of one used filter cloth roll R of 5 kg, irradiation for 5 minutes is performed by the 10 kW microwave irradiation device 2 (micro transmitter). When the transfer mechanism 3 is driven and the used filter cloth rolls R are sequentially sent out from the last shielding chamber B, the used filter cloth rolls R become detoxified filter cloth rolls R ′. It is sent and conveyed to the outside of the detoxifying device 1 while pushing open the shielding member 7 ″ provided at the outlet O of the detoxifying device 1 and stored in the storage box 10 as appropriate.
[0022]
FIG. 4 shows an example in which the above-described used filter cloth detoxification device 1 is placed on the mobile conveyance vehicle 20. In this example, in addition to the power supply for driving the conveyor of the transfer mechanism 3, microwave irradiation is performed. As a power source for operating the device 2, a battery provided in the transport vehicle 20 can be used.
[0023]
【The invention's effect】
As described above, according to the method and apparatus for detoxifying used filter cloth of the present invention, the used filter cloth used in the filtration dust collector can be reliably detoxified by irradiation with microwaves.
In addition to being able to prevent the exposure of dioxins by sequentially feeding the used filter cloth into the detoxifying device by the transport mechanism, the shielding member prevents the microwave generated inside from leaking to the outside. By providing the shielding chamber formed by the shielding member, it is possible to effectively prevent the microwaves in the adjacent irradiation chambers from interfering with each other.
[0024]
Furthermore, when the detoxification device is placed on a mobile conveyance vehicle, the use of a single filter is used to detoxify used filter cloth such as a garbage incinerator where a plurality of filtering dust collectors are installed. It has the effect of being able to.
[Brief description of the drawings]
FIG. 1 is a side view showing an entire detoxification device for used filter cloth according to the present invention.
FIG. 2 is a plan view showing a part of a used filter cloth detoxification device according to the present invention.
FIG. 3 is a side view showing details of a transfer mechanism.
FIG. 4 is a side view showing an example in which the used filter cloth detoxification device according to the present invention is placed on a transport vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Detoxification device of used filter cloth 2 Microwave irradiation mechanism 3 Transfer mechanism 4 Case A Irradiation chamber B Shielding chamber 20 Mobile conveyance vehicle

Claims (4)

A method for detoxifying a used filter cloth, which comprises irradiating a used filter cloth used in a filtration dust collector with microwaves for a certain period of time to detoxify harmful substances attached to the used filter cloth. An apparatus for detoxifying used filter cloth, comprising: a microwave irradiation mechanism for irradiating microwaves inside a housing; and a transfer mechanism for transferring used filter cloth used in a filtration dust collector. The used filter cloth according to claim 2, wherein a plurality of microwave irradiation mechanisms are provided, and are divided into an irradiation chamber that receives microwave irradiation and a shielding chamber that does not receive microwave irradiation. apparatus. A used filter cloth detoxifying device according to claim 2 or 3, wherein the used filter cloth detoxifying device is mounted on a mobile conveyance vehicle.

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