JP3900882B2 - Incinerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an incinerator that performs combustion processing of combustible materials such as used paper diapers and soot by using circulating heat that recovers waste heat in combustion processing as an auxiliary heat source.
[0002]
[Prior art]
FIG. 4 is a cross-sectional view showing a conventional incinerator disclosed in Japanese Patent Application Laid-Open No. 11-242993, which uses a microwave to heat an object to be heated and combusts a combustible gas generated by the heating. FIG. In FIG. 4, the main body 1 includes a first housing 3 having a first processing chamber 2 therein, and a second housing 5 that is a lid that covers an opening 4 formed in the upper portion of the first housing 3. And have. The second housing 5 is connected to the first housing 3 by a hinge 8 and is provided so as to be rotatable in a direction indicated by a one-dot chain line arrow. A magnetron device 7 is provided in the second housing 5, and one end 6 b of a waveguide 6 is connected to the magnetron device 7. An open end 6 a that is the other end of the waveguide 6 is provided in the upper portion of the first processing chamber 2. The second housing 5 is provided with a shielding plate 17 that covers the opening 4. The shielding plate 17 is made of a material that allows microwaves to pass through, and is provided so as to closely contact the opening 4 when the opening 4 of the first housing 3 is closed by the second housing 5. .
[0003]
The microwave M from the magnetron device 7 which is the main heating means in the conventional incinerator configured as described above is the object to be heated that is introduced into the first processing chamber 2 from the open end 6a through the waveguide 6. The object O is evenly irradiated.
[0004]
A first processing chamber 2 and a second processing chamber 10 disposed below the first processing chamber 2 are provided inside the first housing 3. The first processing chamber 2 communicates with the second processing chamber 10 through the gas passage tube 9. A blower fan 11 is provided on the side of the first housing 3, and air from the outside is sent to the first processing chamber 2 and the second processing chamber 10 through the air flow passage 12 by the blower fan 11. It is configured as follows.
[0005]
The combustible gas G and water vapor S generated from the object to be heated O, which has been put into the first processing chamber 2 and irradiated with microwaves, enter the gas passage pipe 9 from the gas intake port 9a, and this gas passage It passes through the tube 9 and is sent to the second processing chamber 10 from the gas outlet 9 b opened to the second processing chamber 10. Further, the combustible gas G and the water vapor S pass through the catalyst 14 that has reached the oxidation reaction temperature by the heating of the catalyst heater 13.
[0006]
As described above, the combustible gas G and the water vapor S pass through the catalyst 14 so that the combustible components are burned and deodorized. The high-temperature exhaust gas H that has passed through the catalyst 14 eventually becomes carbon dioxide and moisture, and these carbon dioxide and moisture are discharged to the outside through the exhaust passage 15 through the exhaust passage 15.
[0007]
The object to be heated O in the first processing chamber 2 is carbonized in the process of releasing the combustible gas G and the water vapor S, and a large amount of combustion air is sent into the first processing chamber 2 after the carbonization is completed. Ashed.
[0008]
The exhaust gas H flows along the outer surface of the first processing chamber 2 when passing through the exhaust passage 15. Therefore, the heat of the exhaust gas H is transmitted to the object to be heated O in the first processing chamber 2, and the object to be heated O is further heated. Thus, an efficient combustion process is performed while waste heat is recovered from the heat of the exhaust gas H.
[0009]
[Problems to be solved by the invention]
However, in the conventional incinerator configured as described above, the flow rate of the combustible gas flowing out from the gas outlet of the gas passage pipe 9 is uneven due to the difference in flow velocity between the central portion and the peripheral portion in the tube. This is generally known, so that there is a problem that the combustible gas does not flow evenly through the catalyst 14 and the catalyst 14 is partially deteriorated or unburned combustible gas is discharged.
[0010]
It is an object of the present invention to provide an incinerator capable of preventing a biased flow of combustible gas flowing out from a gas outlet of a gas passage pipe and preventing local deterioration of a catalyst and discharge of unburned combustible gas. It is the purpose.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, an incinerator of the present invention is disposed in a first processing chamber for storing and burning an object to be heated, and below the first processing chamber, and is generated from the object to be heated. A second processing chamber having a catalyst for purifying the combustible gas, a gas passage pipe for guiding the combustible gas from the first processing chamber to the second processing chamber, and combustion of the object to be heated. Means for supplying combustion air for promotion, and a gas outlet of the gas passage pipe projects into the second processing chamber, and a combustible gas rectifier is provided at the gas outlet of the gas passage pipe. It has a configuration.
[0012]
With this configuration, it is possible to prevent an uneven flow of combustible gas at the gas outlet of the gas passage pipe.
[0013]
In the incinerator of the present invention, the rectifying means is constituted by a substantially lattice-shaped rectifier disposed in the gas outlet of the gas passage pipe.
[0014]
With this configuration, it is possible to prevent an uneven flow of the combustible gas with respect to the catalyst with a simple configuration in which a rectifier having a gas passage tube diameter is provided.
[0015]
In the incinerator of the present invention, an uneven portion is formed at the gas outlet of the gas passage pipe protruding into the second processing chamber, and at the bottom of the second processing chamber facing the gas outlet. The rectifying means is configured.
[0016]
With this configuration, the flow of combustible gas flowing out from the gas outlet of the gas passage pipe can be forcibly guided to the catalyst.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a sectional view showing a first embodiment of the incinerator of the present invention. Parts similar to those of the conventional incinerator shown in FIG.
[0019]
As shown in FIG. 1, the gas passage tube 9 for communicating the first processing chamber 2 and the second processing chamber 10 is provided with a gas intake port 9a on the first processing chamber 2 side. A gas outlet 9b protrudes from the processing chamber. As shown in the enlarged view of the main part of FIG. 2, the gas outlet 9b has a cylindrical portion 18a and a lattice shape in which a plurality of plates are combined or integrally formed in the cylindrical portion 18a. A ceramic rectifier 18 made of a portion 18b is provided.
[0020]
The operation | movement is demonstrated about the incinerator which is 1st Embodiment comprised as mentioned above.
[0021]
As described in the conventional example, by subjecting the object to be heated O to heat treatment in the first processing chamber 2, combustible gas G and water vapor S are generated from the object to be heated O. The combustible gas G and the water vapor S generated in the first processing chamber 2 pass through the gas passage tube 9 in which the gas intake port 9a is formed and project into the second processing chamber 10. It flows out to the 2nd processing chamber 10 from 9b. At this time, the combustible gas G and the water vapor S that have passed through the gas passage tube 9 are alleviated by the flow velocity difference formed between the central portion and the peripheral portion in the gas passage tube 9 by the rectifier 18 provided at the gas outlet 9b. Thus, the flow rate is substantially uniform and sprayed to the bottom of the second processing chamber 10. The combustible gas G and water vapor S blown to the bottom of the second processing chamber 10 are reflected by the bottom of the second processing chamber 10 and diffused in the second processing chamber, so that they are processed almost uniformly by the catalyst 14 and the exhaust passage 15. It is discharged from the exhaust opening 16 to the outside.
[0022]
As described above, in the present embodiment, the gas outlet 9b of the gas passage pipe protrudes into the second processing chamber and the rectifier 18 is disposed. Therefore, the combustible gas of the catalyst is generated by the rectified combustible gas. It has the effect of suppressing the unevenness of the combustion part and suppressing the partial increase in temperature.
[0023]
FIG. 3 is a cross-sectional view showing the main part of the second embodiment of the present invention. This embodiment is different from the first embodiment in that the gas outlet is provided at the bottom of the second processing chamber 10 facing the gas outlet 9b of the gas passage tube 9 as a rectifier for rectifying the flow of combustible gas. The difference is that a concavo-convex portion 19 is provided for converting and rectifying the flow direction of the combustible gas flowing out from 9b. The specific configuration of this embodiment has a predetermined gap with the gas passage tube 9 at the bottom of the second processing chamber 10 facing the gas outlet 9b, and is substantially coaxial with the central axis of the gas passage tube 9. A first convex portion 19a is formed. A part of the tip of the first convex portion extends inward of the gas outlet 9b. Further, the bottom of the first convex portion 19a is formed with a concave portion 19b, and the outer peripheral portion of the concave portion 19b is protruded from the second convex portion 19c substantially coaxially with the first convex portion 19a. It is formed so as to surround the periphery. With such a configuration, the flow rate of the combustible gas G and water vapor S that has passed through the gas passage pipe 9 is increased at the gas outlet 9b narrowed by the tip of the first convex portion 19a, and the concave portion 19b and the It flows out along the two convex portions 19c, and flows out almost evenly in the direction of the outer periphery of the gas passage tube 9 and toward the catalyst 14.
[0024]
As a result, the combustible gas does not flow unevenly to the local part of the catalyst 14, and only the local part of the catalyst 14 is prevented from becoming a high temperature due to the combustion of the combustible gas G. It is possible to prevent the discharge of unburned gas exceeding the deodorizing capacity.
[0025]
In each of the above-described embodiments, an example in which a magnetron device that generates microwaves is used as the main heating means has been described. However, the present invention is not limited to such a configuration, and the present invention is not limited to combustion. Any incinerator using a combustion system that recovers waste heat in the treatment can be applied. For example, the main heating means may be an electric heater, fuel, or the like. Further, it goes without saying that the shape of the rectifying body provided in the gas outlet as the rectifying means and the shape of the concavo-convex portion provided at the bottom of the second processing chamber are not limited to the shapes disclosed in the drawings.
[0026]
【The invention's effect】
As described above, the incinerator of the present invention is provided with the rectifying means for rectifying the flow of the combustible gas at the gas outlet of the gas passage pipe, so that the combustible gas flows out biased and the local part of the catalyst becomes high temperature. In addition to preventing local deterioration, it is also possible to prevent discharge of unburned gas exceeding the processing capability of combustion and deodorization of combustible components in the local part of the catalyst.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the internal configuration of an incinerator according to a first embodiment of the present invention. FIG. 2 is an enlarged view of a main part of the incinerator according to the first embodiment of the present invention. Sectional drawing of the principal part of the incinerator of the second embodiment according to FIG. 4 is a sectional view showing the internal configuration of a conventional incinerator
9 Gas passage pipe 9a Gas inlet 9b Gas outlet 10 Second processing chamber 14 Catalyst 18 Rectifier 18a Cylindrical portion 18b Grid-shaped portion 19 Uneven portion 19a First convex portion 19b Recessed portion 19c Second convex portion G Combustible gas S Water vapor

Claims (3)

A first process chamber for storing and burning an object to be heated, and a second process provided below the first process chamber and provided with a catalyst for purifying combustible gas generated from the object to be heated A chamber, a gas passage pipe for guiding the combustible gas from the first processing chamber to the second processing chamber, and means for supplying combustion air for promoting combustion of the object to be heated An incinerator characterized in that a gas outlet of the gas passage pipe projects into the second processing chamber and a combustible gas rectifier is provided at the gas outlet of the gas passage pipe. 2. The incinerator according to claim 1, wherein the rectifying means is a substantially lattice-shaped rectifier disposed in a gas outlet of the gas passage pipe. An uneven portion is formed at the gas outlet of the gas passage pipe protruding into the second processing chamber and the bottom of the second processing chamber facing the gas outlet, and the uneven portion constitutes the rectifying means. The incinerator according to claim 1.

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