JPH05164312A - Incinerator - Google Patents

Abstract

PURPOSE:To perform an economical and safe combustion processing of general combustible trashed as well as industrial wastes not producing chemical by harmful substances without generating any black smoke. CONSTITUTION:A proper number of air suction holes 4 are arranged at an intermediate height of a peripheral wall 1 and air outside an incinerator is sucked into the incinerator through each of suction holes 4 with ascending flow of combustible gas generated through an incomplete combustion of ignited material at the lower part within the incinerator. A buffle plate 11 smaller than a peripheral wall 1 by its circumference distance is fixed to an upper part within the incinerator, a narrow clearance 12 is formed between it and the peripheral wall 1 to elongate a staying time of combusted gas, thereby an amount of lowing-in air is restricted and stable. A through-like reinforcing member 7 is fixed to an outer circumferential surface of the peripheral wall 1 to form an aeration passage 9 in a vertical direction communicating with the suction holes 4, and a lower part of the aeration passage 9 is released out of the incinerator to reduce a variation in an amount of flowing-in air. Combustible gas or soot contained in the combusted gas is completely combusted with the buffle plate 11 heated up to a high temperature through combustion of combustible gas. At least the peripheral wall 1 and the buffle plate 11 are made of thick-walled steel material having superior heat-resistance and durability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator capable of incinerating not only general combustible waste but also industrial waste as long as it does not generate a chemically harmful substance when incinerated.

[0002]

2. Description of the Related Art In a conventional incinerator, an incinerator inlet that can be closed is provided at an upper portion or an intermediate portion of an incinerator body, a blower port is provided at a lower portion of the incinerator body, and a flue is provided at an upper portion of the incinerator body. In some cases, a chimney was installed through the flue and a dust removal device was attached to the flue to remove soot and the like generated during incineration.

Further, the applicant of the present application provides a sealable injecting material inlet in the middle of an upright cylindrical furnace body, and has a large number of air supply holes all around the periphery of the furnace body slightly above the inlet. We are developing an incinerator in which a dust removal device is installed in the upper part of the furnace body and a chimney is set up on the upper wall of the furnace body.

In the incinerator developed by the applicant of the present application, when the incinerator is put into the furnace body, the incinerator is ignited and the incinerator inlet is closed, air (oxygen) is almost completely in the lower part of the furnace body. Since it does not flow in, the incinerated matter is almost in a vaporized state and incompletely burned, and as the combustible gas generated there rises in the furnace, it is discharged from the outside of the furnace through a large number of air supply holes provided in the middle wall of the furnace body. It has the advantage that it sucks in the air (oxygen), completely burns in the upper part of the furnace body, and hardly emits soot outside.

In particular, this incinerator emits almost soot to the outside even if the incinerator produces a large amount of black smoke when treated in a general incinerator, such as used tires, urethane bumpers or oil elements. It could be incinerated without doing.

Also, since many of the incidental equipment such as a blower and an igniter that were present in the previous incinerators are unnecessary, the operating cost is low, and it does not require a large installation space and can be used in a relatively narrow space. Met.

[0007]

However, in the incinerator described above, the air required for burning the combustible gas is directly taken in from the outside of the furnace through a large number of air holes in the peripheral wall of the middle part of the furnace body. When a strong wind blows outdoors, the amount of air taken into the furnace body fluctuates greatly, and conditions such as excess and deficiency and high temperature inside the furnace body are complicatedly entangled, but a temporary black from the chimney above. There were cases where a large amount of smoke was emitted, or a small explosion occurred inside the furnace body, causing black smoke to spurt out around the middle of the furnace body.

Therefore, the present invention has been made based on the above-mentioned circumstances, and not only general combustible waste but also industrial waste such as old tires as long as it does not generate a chemically harmful substance when incinerated. The purpose is to provide an economical incinerator that can be safely incinerated at any time with almost no generation of black smoke, with little maintenance cost.

[0009]

In the incinerator according to the present invention for achieving the above object, an appropriate number of intake holes are provided at an intermediate height position of the peripheral wall at appropriate intervals in the circumferential direction, and the outer peripheral surface of the peripheral wall is formed. A gutter-shaped reinforcement is attached along the vertical direction with the opening side covering each intake hole, and the peripheral wall and the reinforcement form a vertical ventilation path leading to each intake hole. Open to the outside of the furnace,
A baffle that is slightly smaller than the peripheral wall is attached to the upper part of the furnace slightly below the chimney to form a narrow gap between the baffle and the peripheral wall, and at least the peripheral wall and the baffle are made of thick steel material.

[0010]

In the incinerator according to the present invention, the air outside the furnace is drawn into the furnace through the intake hole and the air passage due to the upward flow of the combustible gas generated by the incomplete combustion of the incinerator in the lower part of the furnace. Since the burned gas passes through the narrow gap between the baffle plate and the peripheral wall, the residence time in the furnace becomes longer, the air inflow amount from the outside of the furnace is suppressed, and the intake hole communicates with the outside of the furnace through the ventilation passage. Therefore, even if a strong wind blows outside the furnace, the fluctuation of the air inflow is small and stable.

Further, since the combustible gas burns in the upper part of the furnace to heat the baffle plate, when the burned gas passes through the narrow gap between the baffle plate and the peripheral wall, the combustible gas remaining in the burnt gas remains. The smoke and soot are heated by the high-temperature baffle and completely burned, and the soot emitted from the chimney is extremely small.

[0012]

EXAMPLES The incinerator according to the present invention will be specifically described below. 1 to 4 show a first embodiment of the present invention. In the incinerator of this embodiment, the inlet 2 for the incinerated matter is closed at the intermediate height position on the front surface of the cylindrical peripheral wall 1, and the outlet 3 for the burned slag (metal mixed in the incinerated matter) is closed below the inlet 2. 7 intake holes 4 at the intermediate height position of the peripheral wall 1 from both side surfaces to the back surface except where the inlet 2 is formed.
Are provided at substantially equal intervals in the circumferential direction, and seven reinforcing members 7 made of a U-shaped steel material (channel) are provided in the peripheral wall 1 with their opening sides facing the outer peripheral surface of the peripheral wall 1 and covering each intake hole. A ventilation passage 9 is formed from the upper end to the lower end, and the peripheral wall 1 and the reinforcing member 7 communicate with each intake hole 4 in the vertical direction.

The ceiling wall 5 has a flange portion 6 having a larger outer diameter than the peripheral wall 1 and extending to the outer peripheral side of the peripheral wall 1, and the flange portion 6 closes the upper end of the ventilation passage 9. Three of the reinforcing members 7 located at equal intervals in the circumferential direction are provided with leg portions 8 extending below the peripheral wall 1 and provided with a ground plate 19 at the lower end, and the ventilation paths 9 are provided for the reinforcing members 7. The lower end communicates with the outside of the furnace.

A disk-shaped baffle 11 which is slightly smaller than the peripheral wall 1 is attached to the ceiling wall 5 slightly below the ceiling wall 10 via a hanging plate 10.
A narrow annular gap 12 is formed between the peripheral wall 1 and the baffle plate 11. In the center of the ceiling wall 5, a chimney base 13 with a flange 15 for connecting a chimney 14 of an appropriate length is provided upright.

In the case of the incinerator of the above embodiment, the charging port 2
A single-opening door 17 and 18 for sealing is attached to the discharge port 3 and the discharge port 3, respectively, and all the main members in contact with high temperature such as the peripheral wall 1, the ceiling wall 5, the baffle plate 11 and the hearth 16 are thick (16 mm to 22 mm). ) Steel is used and heat-resistant paint is applied to the outer surface of the incinerator.

FIGS. 5 to 7 show a second embodiment of the incinerator of the present invention. Regarding the same points as those of the incinerator of the first embodiment, only the symbols are attached to the drawings and the description thereof is omitted. To do. The main difference of the incinerator of this embodiment from that of the first embodiment is that the incinerator is roughly shaped, that is, the peripheral wall 1 is formed into a substantially square prismatic shape. Therefore, the baffle plate 11 has a substantially square shape which is slightly smaller than the peripheral wall 1. Angle plates are separately attached to the four corners of the lower end of the peripheral wall 1, and the ground plate 1 is attached to each of the lower ends.
9 is attached to form a leg 8.

When using this incinerator, first the charging port 2
Open and put incinerator (general combustible waste, etc.) in the furnace,
Close the door 17 after ignition. At this time, the door 1 of the discharge port 3
Keep 8 closed. The maximum amount of incineration to be put into the furnace depends on the size of the incinerator, but it should be a little below the intake hole 4 at the maximum. In addition to general combustible waste, industrial wastes such as used old tires, urethane bumpers, oil elements, etc. that do not generate chemically harmful substances when incinerated can be used as incinerated materials. When incinerating a relatively large amount of waste wood, use an incinerator with a large capacity.

After the door 17 is closed, since almost no air (oxygen) flows into the lower part of the furnace, the incinerator burns in an oxygen-deficient state (incomplete) to produce combustible gas, and the combustible gas is slightly Rises in the furnace together with soot and the like, and an air flow from the outside of the peripheral wall 1 to the inside of the furnace is generated in each intake hole 4 as the combustible gas rises. Then, fresh air outside the furnace enters the ventilation passage 9 from the lower end of the ventilation passage 9 formed of the peripheral wall 1 and the reinforcing material 7 that is open to the outside of the furnace, and rises in the ventilation passage 9 along the peripheral wall 1, It flows into the furnace through each intake hole 4.

At this time, the fresh air from outside the furnace is ventilated.
Since the peripheral wall 1 is heated to some extent while rising inside, the combustion efficiency of the combustible gas in the furnace is improved. On the contrary, the surrounding wall 1
Since the reinforcing material 7 functions as a heat radiation fin and is cooled to some extent and wear at the time of combustion is suppressed, when incinerating old tires or urethane bumpers that burn at high temperatures, use refractory bricks or castable refractories. It has excellent heat resistance and durability even compared to conventional incinerators.

The air flowing from the ventilation passage 9 into the furnace through each of the intake holes 4 is partially consumed in the lower part of the furnace and burned (incompletely), but most of the air is consumed in the furnace. As it rises, the combustible gas and some soot are consumed for complete combustion. Here, when the rising combustible gas consumes the air from the intake port 4 and burns, the highest temperature upper flame part of the flame heats the baffle plate 11 to a high temperature. 4. The baffle plate 11 and other positions are set, but the size of the flame changes depending on the amount of the incineration product, so it is desirable to insert the incineration product just below the inlet 2.

The burned gas circulates around the lower surface of the baffle plate 11 while heating the baffle plate 11 and is discharged from the chimney 14 through the narrow gap 12 between the baffle plate 11 and the peripheral wall 1. The bottom surface of the plate 11 is stagnant for a while. Combustibles such as soot and combustible gas remaining in the burned gas during this stay are heated by the high-temperature baffle plate 11 and completely burned, so the burned gas discharged from the chimney 14 through the gap 12 is almost colorless and transparent. Becomes

Further, since the outflow amount (exhaust amount) of the burned gas is suppressed and stabilized by the narrow gap 12, the amount of air sucked into the furnace from the ventilation passage 9 through the intake hole 4 is also stabilized, and therefore, Even if a strong wind blows outside the furnace, the amount of air taken in is stable with little fluctuation, and the burned gas discharged from the chimney 14 is almost colorless and transparent.

Since the incinerator does not need to be separately provided with an air blower, a dust remover, etc., if the size is small, it is 1 m.
Can be installed in a narrow space of ^{2 to 2} m ² . Even if a flammable gas bursts in the furnace, the intake hole 4 and the air passage 9 function as an explosion-proof valve and escape downward, so there is little risk of damage to the incinerator and safety is high. Further, since thick-walled steel material is used for the main members such as the peripheral wall 1 and the baffle plate 11, the durability is excellent and the repair can be easily performed by welding or the like.

[0024]

In the incinerator according to the present invention, as described above, the inflow of combustible gas generated by the incomplete combustion of the incinerated substance in the lower part of the furnace allows the air outside the furnace to be introduced into the furnace through the intake holes and the ventilation passages. It is not necessary to install a separate blower because it is drawn into the chamber, and of course the burned gas is passed through a narrow gap between the baffle plate and the peripheral wall to lengthen the residence time in the furnace and increase the air inflow amount from the outside of the furnace. In addition to suppressing, the lower end side of the ventilation path is communicated outside the furnace, so even if a strong wind blows outside the furnace, the air inflow does not change easily and is stable, and there is no risk of incinerators exploding and stable and good. Can be safely incinerated under various conditions.

Further, the combustible gas burns in the upper part of the furnace to heat the baffle plate to a high temperature, and when the burned gas passes through the narrow gap between the baffle plate and the peripheral wall, the combustible gas remains in the burned gas. Since the gas and soot are heated by a high-temperature baffle plate and completely burned, the soot emitted from the chimney can be extremely reduced without a separate dust removing device.

As described above, when the incinerator of the present invention is used, not only general burning dust, but also industrial waste such as old tires is almost black smoke if not chemically harmful substances are generated. Can be incinerated economically and safely without producing waste.

[Brief description of drawings]

1 is a longitudinal sectional view showing a first embodiment of an incinerator according to the present invention.

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

3 is a cross-sectional view taken along the line BB of FIG.

FIG. 4 is a front view showing a first embodiment of the incinerator according to the present invention.

FIG. 5 is a partially cutaway side view showing a second embodiment of the incinerator according to the present invention.

6 is a cross-sectional view taken along the line CC of FIG.

7 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1 Peripheral wall 2 Input port 4 Air intake hole 7 Reinforcement material 9 Ventilation path 11 Baffle plate 12 Gap 14 Chimney

Claims (1)

[Claims] 1. An appropriate number of air intake holes (4) are formed at appropriate intervals in a circumferential direction at an intermediate height position of the peripheral wall (1), and a gutter-shaped reinforcing member (7) is provided on an outer peripheral surface of the peripheral wall (1). Is installed along the up-down direction so as to cover the intake holes (4) on the opening side thereof, and the peripheral wall (1) and the reinforcing material (7) form a vertical ventilation passage (9) communicating with the intake holes (4). The ventilation passage (9) communicates with the outside of the furnace at the lower end, and the peripheral wall (1) is formed above the inside of the furnace below the chimney (14).
Attaching a smaller baffle (11) to the surrounding wall (1)
An incinerator characterized in that a narrow gap (12) is formed between the at least one peripheral wall (1) and the baffle plate (11) made of thick steel.