JP2986681B2 - Incinerator inner wall structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a support plate having a large number of through-holes, forms a cooling air supply space between the support plate and a wall base, and includes a fire-resistant plate on the support plate. The present invention relates to an incinerator inner wall structure which is juxtaposed to form an incinerator inner wall surface.

[0002]

2. Description of the Related Art Heretofore, as this kind of incinerator inner wall structure, it has been usual that a refractory plate made of metal is supported by a support plate and juxtaposed to form an incinerator inner wall surface.

[0003]

However, if a metal refractory plate is used on the inner wall of the incinerator, foreign matter tends to adhere to the hot metal as the temperature approaches the softening temperature. The clinker generated from the garbage and the like adheres to the surface of the refractory plate and easily corrodes. Therefore, it is necessary to maintain the refractory plate. However, since the inside of the incinerator is exposed to a high temperature, the mounting structure of the refractory plate is burned or corroded by corrosive gas (hydrogen chloride gas or the like). In some cases, maintenance becomes difficult, and it has been desired to form the incinerator inner wall structure using a highly durable refractory plate.

In view of the above circumstances, an object of the present invention is to provide an incinerator inner wall structure in which a fireproof plate has high durability and is easy to maintain.

[0005]

According to a feature of the present invention to achieve this object, a refractory plate is formed of ceramics, a receiving member for receiving the refractory plate is mounted on the support plate, and a vertical member is mounted on the receiving member. A locking hole that penetrates through the hole, a locking metal that can be inserted into and removed from the locking hole is provided, and an engagement edge of the locking metal that can be engaged with an edge of the fireproof plate. A hole is formed, and in a state where the refractory plate is installed on the receiving member, the locking fitting is engaged with the refractory plate, and the refractory plate is configured to be freely fixed to the receiving member. A gap for air blowing is formed between the refractory plates arranged side by side in a state in which the fixing member is fixed to the receiving member. Ba Well, as the fire-resistant plate,
It is preferable to be formed from a material containing at least one of silicon nitride (Si ₃ N ₄ ), silicon carbide (SiC), and zirconia (ZrO ₂ ). The operation and effect are as follows.

[0006]

In other words, since the refractory plate is formed of ceramics, the ceramics generally have a high melting point and are hard to soften. Therefore, even if the inside of the incinerator becomes hot and the clinker comes into contact with the refractory plate, the clinker is not affected. Is less likely to adhere to the surface of the refractory plate, less likely to cause inconvenience that the inner wall surface of the incinerator is covered with clinker, and eliminates the need for high-frequency maintenance,
The refractory plate is not easily burned due to a high temperature, and inconveniences such as corrosion due to hydrogen chloride gas and the like caused by burning of plastic contained in refuse are less likely to occur.

[0007] A receiving member for receiving the refractory plate is mounted on the support plate, and a locking hole penetrating vertically is formed in the receiving member, and the locking member is removably lockable in the locking hole. A stopper is provided, an engagement hole for engaging the stopper is formed at an edge of the refractory plate, and the stopper is mounted on the receiving member. Since the refractory plate is configured to be fixed to the receiving member by engaging with the plate, the refractory plate is installed on the refractory plate, and the locking fitting is engaged with the locking hole from the locking hole. The fire-resistant plate can be fixed to the support plate simply by inserting the fire-resistant plate into the hole, and the fire-resistant plate can be juxtaposed to form the inner wall of the incinerator easily by simply performing a simple operation. Again in comparison with, the thermal stress is hardly configuration concentrated, it is possible to improve the durability of the refractory plate.

In addition, since a large number of through holes are formed in the support plate and a gap for blowing air is formed between the refractory plates arranged side by side, a space is provided between the support plate and the wall base. Since the cooling air from the cooling air supply space can be introduced into the incinerator, the cooling air deprives the heat of the inner wall of the incinerator, mitigating the temperature rise, and Abnormally high temperature can be suppressed.

[0009]

As a result, the refractory plate becomes unusually high in temperature and is not easily seized or clinker adhered, and it is unlikely to be corroded by the corrosive gas (hydrogen chloride gas or the like). Can be easily formed, so that durability is improved and maintenance is easy.

If the receiving member is formed in the through hole so as to be detachable, the inner wall surface of the incinerator can be formed by sequentially assembling the receiving member without attaching the receiving member to the support plate in advance. Therefore, the inner wall surface of the incinerator can be further easily formed, maintenance becomes easy, and the through-hole can also be used as a mounting portion of the receiving member. Therefore, it is not necessary to provide a new mounting portion for the receiving member. Further, the refractory plate is made of silicon nitride (Si).
₃ N ₄ ), silicon carbide (SiC), zirconia (ZrO ₂ )
When formed from a material containing at least one of the above, the heat resistance is high and the durability of the refractory plate is extremely good.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. As shown in FIGS. 1 and 2, the incinerator is a stoker type for incinerating garbage input from a pusher 2 provided at the bottom of the hopper 1 and hopper 1 into which municipal garbage, which is an incineration object, is accumulated. And a ash pit 4 that accumulates the ash incinerated in the combustion treatment zone 3 is connected to form a secondary combustion region 5 for completely burning combustion gas in the space above the combustion treatment zone 3. A waste heat boiler 7 that recovers waste heat from exhaust gas to generate the above-mentioned waste gas, a waste gas treatment device 8 that removes harmful substances, and a chimney 9 that discards treated exhaust gas are provided downstream of the flue 6. It is composed. The combustion treatment zone 3 includes, in order from the upstream side, a drying zone 3a for drying the inputted dust, a combustion zone 3b for gasifying and burning the dried dust, and a post-combustion zone 3c for ashes the carbonized dust. The air box 10 is attached separately below the combustion treatment zone 3, and the air sucked by the blower fan 11 is passed through a supply path 12 equipped with a damper mechanism. A primary combustion air supply mechanism for supplying air for primary combustion from below the combustion zone 3b and the post-combustion zone 3c is provided. The incinerator inner wall structure of the present invention is used for an air cooling wall A provided so that air sucked by the blower fan 11 can be freely supplied as cooling air at a lower portion of a side wall of the combustion zone 3b.

As shown in FIG. 3, the air-cooling wall A is provided with a support plate 13 at an interval on a wall base B in a sectional view.
A cooling air supply space 14 is formed, a receiving member 15 is attached to the support plate 13, and a refractory plate 16 is juxtaposed and laid on the surface of the support plate 13 (the surface on the combustion zone space side) side.

As shown in FIGS. 2 to 4, the support plate 13 is made of a steel plate having a large number of through holes 13a. It stands along B.

The receiving member 15 has a rectangular mounting plate 15a.
The L-shaped support rod 15b is attached to the
Is fixed to the through hole 13a, so that the mounting plate 15
a is configured to be attachable horizontally to the support plate 13, and the mounting plate 15a is formed with a locking hole 15c penetrating vertically.

The refractory plate 16 is a cubic zirconia block having a square cubic shape in a plan view and having a cutout inclined portion 16a formed on the upper end side of the surface and a projected inclined portion 16b formed on the lower end side of the surface. On the lower end surface, the engagement hole 1 is located at a position facing the engagement hole 15c with the refractory plate 16 placed on the receiving member 15.
6c is formed.

When the air-cooling wall A is formed by using the refractory plate 16, the receiving members 15 are locked and supported in the through holes 13a of the support plate 13 provided along the wall surface base B in order from the bottom. At the same time, a rod-shaped locking member 17 is attached to the locking hole 15c of the receiving member 15,
An engaging hole 16c formed in the lower end surface of the fireproof plate 16 is engaged with the locking metal member 17 to be fixed to the support plate 13, and the receiving member 15 is engaged with the through hole 13a thereover. The locking member 17 is inserted into the locking hole 15c of the receiving member 15 and fixed.
Through the locking hole 15c.
Is engaged with an engagement hole 16c formed in the upper end surface of. When the refractory plate 16 is installed on the support plate 13 by repeating such an operation, the refractory plate 16 is laid on the surface of the support plate 13. At this time, a gap 18 for blowing cooling air is formed between the refractory plates 16, and cooling air is introduced into the cooling air supply space 14 on the back side of the support plate 13. The cooling air passes through the support plate 13 from the through hole 13a and is blown out from the gap 18 toward the combustion zone 3b. Therefore, the vicinity of the surface of the refractory plate 16 is cooled by receiving heat exchange with the cooling air, so that the problem of the refractory plate 16 reaching a high temperature is unlikely to occur.

The refractory plate 16 has a substantially square shape in a plan view, and has a simple fixing structure in which the locking metal 17 is locked in the engaging hole 16c, so that thermal stress is accumulated. It is hardly configured. Further, since the notch inclined portion 16a and the protruding inclined portion 16c form a gap 18 inclined downward, foreign matter such as a clinker does not easily enter the gap 18.

At the time of maintenance, each refractory plate can be detached separately.
Since it is difficult for the locking metal to become difficult to remove due to seizing or the like, maintenance is easy.

[Another embodiment] Another embodiment will be described below.
The receiving member 15 is detachably formed in the through hole 13 a, but may be welded to the support plate 13.

Although the material of the refractory plate 16 is made of zirconia, any material having a high heat resistance and a high melting point is preferable, for example, silicon nitride (Si ₃ N ₄ ), silicon carbide (Si).
C) and the like can be used.

The configuration of the entire incinerator is not limited to the configuration of the above-described embodiment, and another processing device for processing exhaust gas or ash may be provided in series.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

Fig. 1 Longitudinal side view of an incinerator

FIG. 2 is a cross-sectional side view of a combustion zone of an incinerator.

FIG. 3 is a longitudinal side view of an air cooling wall.

FIG. 4 is an exploded perspective view of an air cooling wall.

DESCRIPTION OF SYMBOLS 13a Through hole 13 Support plate B Wall base 14 Cooling air supply space 16 Fireproof plate A Incinerator inner wall 15 Receiving member 15c Locking hole 17 Locking fitting 16c Engagement hole 18 Gap

Claims (3)

(57) [Claims] 1. A support plate (13) having a large number of through holes (13a) is provided, and a cooling air supply space (14) is formed between the support plate (13) and a wall base (B). And an incinerator inner wall structure in which a refractory plate (16) is juxtaposed with the support plate (13) to form an incinerator inner wall surface (A), wherein the refractory plate (16) is formed of ceramics; A receiving member (15) for receiving the refractory plate (16) is attached to a support plate (13), and the receiving member (15) is attached.
An engaging hole (15c) penetrating up and down is formed in the engaging hole (15c), and the engaging member (1) is detachably engageable in the engaging hole (15c).
7), an engagement hole (16c) with which the latch (17) can be engaged is formed at the edge of the refractory plate (16), and the refractory plate (1) is formed on the receiving member (15).
In the state where 6) is installed, the locking metal fitting (17) is engaged with the fireproof plate (16), and the fireproof plate (16) is configured to be freely fixed to the receiving member (15). With the refractory plate (16) fixed to the receiving member (15), a gap (1) for blowing air is provided between the refractory plates (16) arranged in parallel.
8) An incinerator inner wall structure formed as above. 2. The incinerator inner wall structure according to claim 1, wherein said receiving member (15) is detachably formed in said through hole (13a). 3. The refractory plate (16) is made of silicon nitride (Si ₃ N ₄ ), silicon carbide (SiC), zirconia (Zr).
Incinerator the inner wall structure according to any one of claims 1-2 which is formed from those containing at least one of O _2).