JPH0674431A - Air-feeding nozzle in incinerator - Google Patents

Abstract

PURPOSE:To make the condition of combustion in the secondary combustion chamber favorable by passing the gases from the combustion flowing from the primary combustion chamber to the second combustion chamber through two parts one of which is a passage opening in the middle of an air-feeding body of nozzles and the other is a space between the periphery of the air-feeding body of nozzles and the inner side of the passageway for the gases. CONSTITUTION:The gases from the combustion G flowing from a primary combustion chamber F to a secondary combustion chamber M are passed through two parts one of which is a passage opening N formed in the middle of an air-feeding body of nozzles and the other is a space L for passing the gases opened between the periphery of the air-feeding body of nozzles 17 and the inner side of the gas passageway 22. This constitution reduces the resistance to the flow of fluid and enables smooth passage of the combustion gases. A flow of air A sent from a blower 20 is passed through the air-feeding body of nozzles and ejected toward the secondary combustion chamber through nozzles 18, 19 provided both on the side of the inner circumference and on the side of the outer circumference. With air fed from both the inner side and the outer side, the supply of air toward the secondary combustion chamber is improved and resulting an improvement in the condition of combustion therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply nozzle for an incinerator used for incinerating waste tires and the like.

[0002]

2. Description of the Related Art Conventionally, as an air supply nozzle for an incinerator of this type, for example, as shown in FIGS. It is arranged in the middle of a gas passage b connecting the chamber, a blower pipe c connected to a blower is connected to the mouth of the air supply nozzle body a, and a plurality of ejection nozzles d are provided on the outer peripheral surface side of the air supply nozzle body a. It is known that individual pieces are arranged.

Therefore, air is sent from the blower into the air supply nozzle body a through the blower pipe c, and this air is jetted and supplied from the plurality of jet nozzle bodies d toward the secondary combustion chamber side. .

[0004]

However, in the case of the above-mentioned conventional structure, the air supply nozzle body a is formed in the shape of a vase with a bottom, and the gas passage b connecting the primary combustion chamber and the secondary combustion chamber is provided. Therefore, the combustion gas G passing from the primary combustion chamber to the secondary combustion chamber can pass through only the gap R between the outer peripheral surface side of the air supply nozzle body a and the inner surface of the gas passage b. Yes, the air supply nozzle body a obstructs the passage of the combustion gas G, and the passage of the combustion gas G from the primary combustion chamber to the secondary combustion chamber becomes unsmooth, causing incomplete combustion. It has the disadvantage that it may cause a reduction in the combustion effect.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such an inconvenience, and its gist is to arrange a gas passage for connecting a primary combustion chamber and a secondary combustion chamber. A blower for supplying air sent from a blower to the side of the secondary combustion chamber, and having a passage hole portion through which combustion gas passes in a central portion in the middle of the gas passage, in a substantially annular tubular shape. An ejection nozzle capable of ejecting air to the inner peripheral surface side and the outer peripheral surface side of the air supply nozzle body by disposing the formed air supply nozzle body with a gas passage gap between the inner surface of the gas passage and the gas supply passage. An air supply nozzle for an incinerator, characterized in that a plurality of the above are provided.

[0006]

The combustion gas passing from the primary combustion chamber to the secondary combustion chamber is the gas existing between the passage hole portion in the central portion of the air supply nozzle body and the outer peripheral surface of the air supply nozzle body and the inner surface of the gas passage. The air that passes through both parts of the passage gap and is blown from the blower is ejected to the secondary combustion chamber side from a plurality of ejection nozzles arranged on the inner peripheral surface side and the outer peripheral surface side of the air supply nozzle body. Become.

[0007]

1 to 5 show an embodiment in which the present invention is applied to a waste tire incinerator, 1 is a primary combustion section, 2 is a secondary combustion section, and in this case, the primary combustion section 1 is A base cylinder part 3, an intermediate cylinder part 4, and a lid part 5 are assembled in a stacked state, and a bottom plate 7 having a plurality of through holes 6 is provided at the bottom of the base cylinder part 3. A scraping outlet 8 for scraping off combustion residues is provided below the side portion of the base tube portion 3, and the base tube portion 3 has an inner wall member 9
To form a double partition structure, and cooling water 1 is formed between the partition walls.
0 is stored and external air is sent between the bottom plate 7 and the inner bottom surface of the base tube portion 3 from a blower for primary combustion (not shown) via the lower opening portion 11, and the air is a perforated bottom plate. It is configured such that tar and the like generated by the combustion of the waste tire W are sent downward through the through hole 6 of the bottom plate 7 by being sent into the primary combustion chamber F through the through hole 6 of the bottom plate 7.

The intermediate tubular portion 4 is formed in a tubular shape, and is provided with a bearing portion 12 on the upper side, bearing a swivel shaft 13 on the bearing portion 12, and attaching a lid portion 5 to the swivel shaft 13.

The secondary combustion section 2 is, in this case, the base cylinder section 1.
4, an intermediate tubular portion 15, and a chimney portion 16 are assembled and configured in a stacked state, the inside thereof is formed in the secondary combustion chamber M, and the base tubular portion 14 is formed in a double partition structure similar to the above.
Cooling water is stored between the partition walls.

Reference numeral 17 denotes an air supply nozzle body, which is made of metal and has a through hole portion N through which the combustion gas G passes in a central portion and is formed in a substantially annular cylinder shape. Three ejection nozzles 18 are attached to the peripheral surface side, three ejection nozzles 19 are attached to the outer peripheral surface side, and a connection port portion 21 connected to the blower 20 is formed in the air supply nozzle body 17. .

Reference numeral 22 denotes a gas passage, which is a passage connecting the primary combustion chamber F and the secondary combustion chamber M, and the gas supply nozzle body 17 is provided in the gas passage 22 on the inner surface of the gas passage 22. A gas passage gap L is provided between the base tube portion 2 and
The blower 20 is arranged on the side surface of the blower, and the blower 2 is attached to the connection port portion 21.
0 blower pipe 23 is connected, and the air sent from the blower 20 is directed from the three ejection nozzles 18 on the inner peripheral surface side and the three ejection nozzles 19 on the outer peripheral surface side toward the secondary combustion chamber M side. It is configured to squirt.

In this case, cooking lids 24 and 25 for inserting a combustion burner (not shown) are formed in the lid of the scraping outlet 8 and the gas passage 22 and the oil burner is inserted into the cooking opening 24 so that the inside of the primary combustion chamber F is opened. The waste tire W of No. 1 is ignited and burned, the oil burner is removed after the combustion is started, the oil burner is inserted into the cooker 25 to ignite and burn the inside of the secondary combustion chamber M, and after the ignition, the oil burner is removed and the waste tire is used. W is trying to burn itself.

Since this embodiment has the above-mentioned structure, the cover 5 of the primary combustion section 1 is swung to dispose of the waste tire W in the primary combustion chamber F.
The waste tire W in the primary combustion chamber F is ignited and burned by inserting an oil burner into the cooker 24, and the combustion gas G after the primary combustion passes through the gas passage 22 and the secondary combustion section 2 In the secondary combustion chamber M, the secondary combustion is performed in the secondary combustion chamber M, the smoke is exhausted from the chimney portion 16, and the waste tire W is incinerated.

At this time, from the primary combustion chamber F to the secondary combustion chamber M
The combustion gas G passing to the gas passage passes through the passage hole portion N located in the central portion of the air supply nozzle body and the gas passage gap L existing between the outer peripheral surface of the air supply nozzle body 17 and the inner surface of the gas passage 22. As a result, the fluid passage resistance can be reduced so much that the combustion gas G can smoothly pass, and the air A sent from the blower 20 passes through the air supply nozzle body 17 to the inner peripheral surface side and the outer peripheral surface. Is ejected toward the secondary combustion chamber M side from the plurality of ejection nozzles 18 and 19 disposed on the side, and thus is ejected from both inside and outside, and air is supplied to the secondary combustion chamber M side. Is performed well, and the combustion state in the secondary combustion chamber M can be improved.

The present invention is not limited to the above embodiment, but can be applied to other incinerators and incinerator combustion structures other than the incinerator for the waste tire W, and the air supply nozzle body 17 and the jet nozzle 18 The shape and number of 19 are appropriately changed and designed.

[0016]

As described above, according to the present invention, the combustion gas passing from the primary combustion chamber to the secondary combustion chamber passes through the passage hole in the central portion of the air supply nozzle body and the outer peripheral surface of the air supply nozzle body. The air will pass through both parts of the gas passage gap that exists between the inner surface of the passage and the fluid passage resistance, which will allow the combustion gas to pass smoothly. Through the inner peripheral surface side and the outer peripheral surface side of the secondary combustion chamber side. Therefore, the secondary combustion chamber is ejected from both inside and outside. Air is satisfactorily supplied to the side, and the combustion state in the secondary combustion chamber can be improved.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of the present invention.

FIG. 2 is a partial vertical sectional view of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view of a main part of the embodiment shown in FIG.

FIG. 4 is a partial vertical cross-sectional view of the embodiment shown in FIG.

5 is a perspective view of a main part of the embodiment shown in FIG.

FIG. 6 is a partial cross-sectional view of a conventional structure.

7 is a partial vertical cross-sectional view of the conventional structure shown in FIG.

[Explanation of symbols]

 17 Air Supply Nozzle Body 18 Jet Nozzle 19 Jet Nozzle 22 Gas Passage Path F Primary Combustion Chamber M Secondary Combustion Chamber N Passage Hole L Gas Passage Gap

Claims (1)

[Claims] 1. A gas passage which is arranged in a gas passage connecting the primary combustion chamber and the secondary combustion chamber, and injects air sent from a blower to the side of the secondary combustion chamber. An air supply nozzle body, which is formed in a substantially annular tube shape and has a passage hole portion through which combustion gas passes in the middle part, is arranged with a gas passage gap between it and the inner surface of the gas passage passage. An air supply nozzle for an incinerator, comprising a plurality of ejection nozzles capable of ejecting air on the inner peripheral surface side and the outer peripheral surface side of the air supply nozzle body.