JPH09210328A - Incinerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To substantially completely incinerate a material to be incinerated to need high incinerating temperature by supplying the air along a passage from an air intake port provided at the side wall of a combustion cylinder to a duct, directing the combustion flame by a combustion burner toward the passage, supplying the sufficient secondary air near the flame, and raising the flame to a high temperature. SOLUTION: When a combustion burner 17 starts operating, upward draft is generated in a smoke extinction cylinder by the operations of a blower and a smoke extinction burner, and strong draft is generated along a passage 14 from an air intake port 7 provided at the sidewall 5 of a combustion cylinder 3 to a duct 11. Since the combustion flame 19 radiated from the burner 17 is directed toward the passage 14, the vicinity of the flame 19 becomes an air-rich state. Further, the sidewall 5 is formed in a convergence toward the downward to increase the incinerating capacity for the material near the flame 19. As a result, it becomes a substantially complete combustion state, the flame 19 becomes sufficiently high temperature, and the material to need high incinerating temperature can be completely incinerated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for incineration objects requiring a high incineration temperature.

[0002]

2. Description of the Related Art Conventionally, an incinerator that burns incineration materials by a combustion burner is disclosed in, for example, Japanese Patent Application No. 7-31 by the present applicant.
No. 1720. The incinerator will be described with reference to the sectional view of FIG. A combustion burner (upper) 43 and a combustion burner (lower) are provided on the side wall of the combustion chamber 42 in which the incineration object 41 is stored.
44 is provided, a lid 46 is provided at an input port 45 on the upper side, and a rustle 47 and an ash removal port 48 are provided at the lower side.
Then, below the smoke eliminating chamber 49, a smoke eliminating burner 50 and a blower 51
A ventilation duct 52 is provided, a chimney 53 is provided above, and ducts 54, 55, 56 and 57 are provided between the combustion chamber 42 and the smoke eliminating chamber 49.

[0003]

However, this incinerator 5
No. 8 has a defect that the incineration object 41 requiring a high incineration temperature, for example, a diaper made of a water-absorbent polymer cannot be completely incinerated. Therefore, after incinerating about 320 kg of diaper, it becomes powdery ash and the amount of residue is 10 kg to 30 kg.
And many.

When the inventors of the present invention have investigated the cause, the combustion flame of the combustion burner (lower) 44 is blocked by the incineration object 41, the secondary air is insufficient, and the combustion is not completely combusted. It was found that this was because the incineration temperature of the incineration object 41 was low. Therefore, the present invention takes such a conventional defect into consideration,
It is intended to provide an incinerator that almost completely incinerates an incineration object that requires a high incineration temperature.

[0005]

In order to solve the above-mentioned problems, the present invention provides a combustion cylinder in which an incineration object is housed, an air intake provided on a side wall of the combustion cylinder, and an air intake. It is provided with a duct located opposite to each other and provided on the side wall, and a combustion burner provided on the side wall and emitting combustion flame toward a passage connecting the air intake port and the duct.

In the present invention, more preferably, the side wall of the combustion cylinder is provided with a slope in the vicinity of the passage so that it is tapered downward.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An incinerator according to an embodiment of the present invention will be described below with reference to the sectional view of FIG. 1 and FIG. 2 showing its AA section. The incinerator 1 is provided with a combustion cylinder 3 that stores incineration objects 2 such as various kinds of dust, plastic, rubber, plants and the like. The incinerator 1 is suitable for incinerating an incineration object requiring a high incineration temperature, such as a diaper made of a water-absorbent polymer.

The combustion cylinder 3 is composed of an outer shell 4, side walls 5 and a bottom wall 6. The outer case 4 is made of, for example, a stainless plate and is formed in a bottomed cylindrical shape. The side wall 5 is made of heat-resistant cement, for example, and is formed in a substantially cylindrical shape along the inner surface of the outer case 4. The bottom wall 6 is also made of, for example, heat-resistant cement, and the side wall 5
Is formed so as to fill a space between the bottom surface of the outer shell 4 and the bottom surface of the outer case 4.

The air intake 7 is provided in the side wall 5, and the through hole 8 is formed.
It is composed of a protrusion 9 and a lid 10. The through hole 8 is formed on one side of the side wall 5 and near the bottom surface. The protrusion 9 is made of, for example, a stainless steel plate, is formed in a substantially cylindrical shape, and its opening is provided so as to match the position of the through hole 8. The lid 10 is made of, for example, a stainless plate, is detachably provided in the other opening of the projecting portion 9, and is made of, for example, a fixed plate and a movable plate. An opening is formed in a portion where the fixed plate and the movable plate do not overlap with each other, and air is taken in through this opening. The amount of air taken in can be adjusted by changing the rotation angle of the movable plate.

The duct 11 is provided on the side wall 5 and has a through hole 12
And duct part 13. The through hole 12 is formed on the other side of the side wall 5 and near the bottom surface so as to substantially face the through hole 8. The duct part 13 is made of, for example, a stainless pipe,
It is formed in an inverted L shape, and one end thereof is arranged so as to coincide with the through hole 12.

Thus, the through hole 8 of the air intake 7 and the duct 1
The passage 14 connecting the first through hole 12 is configured so that the external air passes from the through hole 8 to the through hole 12. The side wall 5 is preferably provided with slopes 15 and 16 in the vicinity of the passage 14 so as to taper downward.

The combustion burner 17 includes a burner body 18 and a combustion pipe 20 having a jet port for ejecting a combustion flame 19 at its tip.
And a nozzle 21 for ejecting kerosene or the like in the form of mist in the center of the combustion pipe 20, an igniter on the upper surface, and a damper and a kerosene supplying electromagnetic pump on the side surface. A combustion burner 17 is provided on the side wall 5 so that the combustion flame 19 faces the passage 14.

Thus, the combustion burner 17 is arranged below the combustion cylinder 3, and another combustion burner 22 having the same structure as the combustion burner 17 is arranged above the combustion cylinder 3. A charging port 23 for charging the burned material 2 is opened on the upper surface of the combustion cylinder 3, and the charging port 23 is opened and closed by a lid 24.

A smoke extinguishing tube 26 is provided for making the exhaust gas generated from the combustion tube 3 smokeless by the smoke extinguishing burner 25, and a chimney 27 is provided above the smoke extinguishing tube 26. Chimney 27
A lid 28 is provided on the upper part of the container so that the lid 28 is closed to prevent rainwater from entering when the incinerator 1 is not operated.

The blower 29 is arranged below the smoke extinguishing cylinder 26, and the blower duct 30 is connected to the blower 29 so as to extend to the upper portion inside the smoke extinguishing cylinder 26. The ejection portion 31 is formed at the tip of the air duct 30 and is located at the lower end of the chimney 27. Due to the ejector effect generated by the air blown from the jet part 31, the unburned gas generated from the combustion tube 3 is introduced into the smoke eliminating tube 26 through the duct 11 and the other duct 32, and the smoke eliminating burner 25 eliminates smoke. Later the chimney 27
It is discharged to the outside.

Next, the operation of the incinerator 1 will be described with reference to FIGS. 1 and 2 again. First, the lid 24 is opened, and the incineration object 2, for example, about 1000 pieces (about 320 kg) of diapers to which filth is attached are charged from the charging port 23. First, the blower 29 is operated, then the smoke eliminating burner 25 is operated, and the air incineration operation is started.

When the temperature sensor (not shown) in the smoke eliminator 26 detects that the temperature reaches a predetermined temperature, the combustion burner 1
7 starts operation. As described above, the operation of the blower 29 and the smoke eliminating burner 25 causes an upward draft (air flow) in the smoke eliminating cylinder 26. Therefore, from the air intake 7 provided on the side wall 5 of the combustion cylinder 3 to the duct 1 facing the air intake 7.
Along the path 14 up to 1, a strong draft occurs.

Further, a combustion flame 19 emitted from the combustion burner 17
Is directed to the passage 14, so that the vicinity of the combustion flame 19 is in an air rich state (there is sufficient secondary air). As a result, the combustion state becomes substantially complete, the combustion flame 19 becomes sufficiently high in temperature, and the incineration object 2 requiring a high incineration temperature (for example, about 800 ° C.) can be incinerated almost completely.

Further, by forming the side wall 5 so as to taper downward, the cross-sectional area inside the combustion cylinder 3 located near the combustion flame 19 becomes smaller, and the output by the combustion flame 19 per unit area increases. As a result, the incineration capacity for the incineration object 2 near the combustion flame 19 increases, and the incineration object 2 is more completely incinerated.

Exhaust gas generated from the combustion cylinder 3 enters the smoke extinguishing cylinder 26 through the duct 11 and the other duct 32, becomes smokeless by the smoke extinguishing burner 25, and is discharged through the chimney 27.

In this way, when the combustion burner 17 is operated for a predetermined time (for example, about 1 to 3 hours) and the incineration operation is completed, the combustion burner 17 is stopped. After that, for a while
The operation of the smoke eliminating burner 25 is continued to perform smokeless operation. After that, when a predetermined time elapses, the smoke eliminating burner 25 is stopped, and when the inside of the smoke eliminating cylinder 26 drops to a predetermined temperature, the blower 29 is stopped and the operation ends.

When operated as described above, an initial value of about 320
It can be seen that the incineration object 2 of kg becomes a lump-like residue of about 1 kg, and the incineration is almost completely completed. Further, the lid 10 can be removed to take out the residue from the opening of the protrusion 9. Further, when the incineration object 2 is large, another combustion burner 22 may be operated. This concludes the description of the operation of the present incinerator 1.

[0023]

As described above, according to the present invention, air flows along the passage from the air intake provided on the side wall of the combustion cylinder to the duct opposite to the air intake. Since the combustion flame emitted by the combustion burner is directed to the passage, the secondary air is sufficiently supplied in the vicinity of the combustion flame, and the combustion flame becomes sufficiently high in temperature. as a result,
Incinerators that require high incineration temperatures can be incinerated almost completely.

More preferably, in the present invention, the side wall is tapered upward in the vicinity of the passage so that the cross-sectional area of the inside of the combustion cylinder located near the combustion flame is reduced, and the combustion flame per unit area is reduced. Output increases. As a result, the incineration ability for the incineration object near the combustion flame is increased, and the incineration object is more completely incinerated.

[Brief description of drawings]

FIG. 1 is a sectional view of an incinerator according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view of a conventional incinerator.

[Explanation of symbols]

 2 Incinerated matter 3 Combustion cylinder 5 Side wall 7 Air intake 11 Duct 14 Passage 17 Combustion burner 19 Combustion flame

Front page continued (72) Inventor Takashi Matsuda 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Electric Co., Ltd. (72) Inventor Kiyoshi Kishimoto 3-201 Minamiyoshikata, Tottori-shi Tottori Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A combustion cylinder in which the material to be incinerated is stored, an air intake provided on a side wall of the combustion cylinder, and a duct which is located substantially opposite to the air intake and is provided on the side wall. An incinerator comprising: a combustion burner that radiates a combustion flame toward a passage that connects the air inlet and the duct and that is provided on the side wall. 2. The incinerator according to claim 1, wherein a side wall of the combustion cylinder is provided with a slope in the vicinity of the passage so as to be tapered downward.