JPH07243625A - Incinerator - Google Patents

Abstract

PURPOSE:To provide an incinerator, relating to one chiefly designed for disposal of waste, which enables disposing of even such waste as requires to be burnt at high temperatures, e.g. waste plastics, and which effects the combustion with increased efficiency. CONSTITUTION:A plurality of vents 11 are bored through the side 10 of a furnace body 1, which encloses a firebox theta with each vents 11 bored in the direction making a specified angle 6 to the direction of the thickness of the plate of the furnace body 1 on a horizontal plane at the position of the bore. As a result, the vents 11 cause the air for combustion fed to the firebox H to form a spiral air flow along the side 10 so that an improvement in combustion efficiency results.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator used for waste disposal.

[0002]

2. Description of the Related Art Relatively small capacity incinerators for incinerating waste are installed in various factories, regardless of size, and discarded as much as possible. They are trying to reduce the amount of garbage by incinerating things themselves.

However, since the processing temperature of such an incinerator is about 1000 ° C. at the most, only combustible wastes such as paper and wood can be incinerated, for example, at a high temperature such as plastic waste materials (1200). When incineration of waste that is pyrolyzed for the first time in () above is added to the exhaust gas from the incinerator, gas with soot and irritating odors, causing trouble to the neighborhood, and thoroughly separating waste when incinerating. Required to be done.

However, a great deal of labor is required for the waste separation work, and particularly in recent years when the plastic products are flooded, a considerable amount of plastic waste material is mixed even after the separation work.

In addition, most of the waste plastic products separately collected by the waste disposal contractor or the local government after the separation are not incinerated but are directly buried in the ground, which is a viewpoint of conservation of the global environment. Therefore, it is preferable to perform the above-mentioned incineration process.

The present invention has been made in view of the above-mentioned conventional circumstances, and it is possible to treat wastes such as the above-mentioned plastic waste materials that need to be incinerated at a high temperature. The purpose is to provide a furnace.

[0007]

In order to achieve the above object, the present invention employs the following means. That is, as shown in FIGS. 1 to 3, there are provided a plurality of ventilation holes 11 penetrating the side surface 10 of the furnace body 1 that surrounds the fire chamber H.
The incinerator is characterized in that the direction of perforation makes a predetermined angle θ with the plate thickness direction of the furnace body 1 at the perforated position in the horizontal plane.

Further, it is more desirable that an outer case 2 for accommodating the furnace body 1 with the side surface 10 separated from the space S, and a blower 3 forcibly introducing combustion air into the space S are desirable.

[0009]

According to the above structure, the combustion air supplied to the firebox H through the respective vent holes 10 forms a spiral airflow in the firebox H, whereby the entire interior of the firebox H. In addition to uniformly burning the treated material, the ventilation in the firebox H is promoted.

More preferably, the outer case 2 as described above is used.
And the blower 3 are provided so that the ventilation can be further promoted.

[0011]

EXAMPLES The present invention will be described below based on examples.
FIG. 1 is a front view showing a part of an embodiment of the present invention in a cutaway manner, FIG. 2 is a cross-sectional plan view taken along the line AA of FIG.
[Fig. 3] is an enlarged sectional view of a furnace body.

As shown in FIGS. 1 and 2, in this embodiment, there is provided a bottomed cylindrical furnace body 1 surrounding a fire chamber H, and the furnace body 1.
An outer case 2 for accommodating the furnace body 1 with a side surface 10 separated by a space S to a predetermined height, and further, combustion air is forcibly supplied to the space S below the outer case 2. The blower 3 for doing is connected.

Further, the side surface 10 of the furnace body 1 is a steel shell 10.
a and a refractory layer 10b made of castable refractory in the inner layer of the iron shell 10a, and a plurality of ventilation holes 1 are provided in a portion of the side face 10 accommodated in the outer case 2.
1 is pierced so as to penetrate both the iron skin 10a and the refractory layer 10b.

As shown in FIG. 3, the vent hole 11 is a vent pipe 1 which projects into the firebox H in a direction that forms a predetermined angle θ with the plate thickness direction of the side surface 10 at the perforated position.
It is composed of 1a.

Further, the furnace body 1 has a semi-circular door 14 hingedly joined to the side surface 10 from the upper end surface 13 so as to be cut out obliquely, and a pipe 16 for connecting the fire chamber H and the outside air at the upper part of the side surface 10. Exhaust stack 15 to communicate through
Further, an ash outlet 17 is provided for scraping out the incinerated ash after processing through the outer case 2.

In order to incinerate the waste in the embodiment having the above-mentioned structure, the door 14 is opened and the waste to be incinerated is put into the firebox H and then ignited by a predetermined ignition method. Start an unillustrated blower (eg, air compressor) connected to the other end of the blower 3,
Combustion air is forcedly introduced into the space S through the blower 3.

The combustion air introduced into the space S is supplied to the fire chamber H through the ventilation hole 11. As shown in FIG. 3, the ventilation hole 11 has an angle θ with respect to the plate thickness direction of the side surface 10.
Since it is formed so as to form a spiral airflow, it is blown in a fixed direction along the side surface 10 in the firebox H and swirls counterclockwise in the illustrated example.

Combustion air is generated in the firebox H by such an air flow.
Of the exhaust pipe 16 is moved toward the upper portion without stagnation and is discharged from the exhaust pipe 16 through the exhaust pipe 15.
Therefore, fresh combustion air is supplied to the entire area of the firebox H, and the ventilation efficiency in the firebox H is extremely smooth to improve the combustion efficiency. For example, in this embodiment, the temperature in the firebox H is increased. However, it was confirmed that most of the waste plastic materials reached 1200 ° C, which was sufficient for complete combustion.

As described above, according to this embodiment, since the combustion efficiency in the firebox H is improved, it is possible to suppress the generation of soot and gas having an irritating odor even when the plastic waste material is incinerated.

Although the furnace body 1 has a cylindrical shape with a bottom in the above embodiment, the cross-sectional shape of the furnace body is not particularly limited in the present invention, but the spiral airflow is generated. Therefore, it is desirable that the cross section has a polygonal shape as close to a circle as possible.

[0021]

As described above, according to the present invention, since the combustion efficiency of the incinerator can be increased, it is possible to incinerate the plastic waste material that could not be processed in the conventional incinerator. As a result, it is possible to reduce the amount of dust generated as a whole, thereby contributing to the preservation of the global environment.

Moreover, even in the incinerator having the conventional structure, since the direction in which the ventilation hole is formed is only inclined with respect to the plate thickness direction of the furnace body at the position where the ventilation hole is formed, the existing incinerator is relatively inexpensive. The furnace can also be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view according to an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of the furnace body of the present invention.

[Explanation of symbols]

 1 Furnace body 2 External case 3 Blower 10 Side surface 11 Vent hole θ Angle

Claims (2)

[Claims] 1. A side surface (1) of a furnace body (1) surrounding a firebox (H).
0) through a plurality of ventilation holes (11), the perforation direction of the ventilation holes (11) is a predetermined angle (θ) in the horizontal direction with the thickness direction of the furnace body (1) at the perforation position. An incinerator characterized by: 2. The furnace body is separated from the side surface (10) by a space (S).
An outer case (2) for accommodating (1), and a blower (3) for forcibly introducing combustion air into said space (S).
Incinerator described in.