JPS5838695B2 - Incinerator incineration material supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an incineration material supplying device for an incinerator, in which the incineration material is supplied into the incinerator from the side of the incinerator.

Generally, when incinerating sludge, municipal waste, industrial waste, etc., a fluidized fluid incinerator is sometimes used, and the above-mentioned objects to be incinerated (hereinafter referred to as incineration materials) are placed in this incinerator.

) Conventional devices for supplying the gas include a furnace top feeding device and a furnace side feeding device.

The furnace top supply device has a supply port for incinerated material equipped with a sealing means in the top part of the incinerator, and supplies the incinerated material through this supply port. Since the gas is supplied by falling by gravity, the supply port can be equipped with a sealing means such as a rotary feeder, which has the advantage of preventing in-furnace gas from leaking from the supply port. The disadvantage is that the structure for transporting the incinerated material becomes complicated because the incinerated material must be carried up to a certain point.

On the other hand, there is a conventional furnace-side incineration material supply device as shown in FIG.

This supply device includes: an incineration material supply passage 2 provided on the side of the incinerator 1 so as to communicate with the inside of the furnace 1A; a screw conveyor 3 serving as an incineration material conveying means provided within this passage 2;
It is equipped with an incineration material storage hopper 4 provided on the end of this passage 2, and a gate 5 that opens and closes the discharge port of this hopper 4, and discharges the incineration material 6 in the hopper 4 into the supply passage 2. The screw conveyor 3 forcibly supplies the incinerator 1 from the side to the inside 1A of the incinerator.

In this way, this kind of furnace-side supply device supplies the incinerated material into the furnace from the side of the incinerator, so there is no need to transport the incinerated material to the top of the furnace. It can be simplified compared to a furnace top feeding device.

However, in the conventional furnace-side incineration material supply device,
It has the disadvantage that it must be removed from the incinerator when the incinerator is out of operation.

In other words, in the furnace side supply device, the screw conveyor must be directly installed at the supply port of the incineration material supply passage to the incinerator without intervening a sealing means such as a rotary feeder. It is necessary to seal the inside of the furnace by blocking the supply port with the material itself.

If the incinerator is shut down in a sealed state due to the incinerated material itself, the incinerated material placed in this sealed state may dry and solidify due to heat transfer from the fluidized medium in the furnace. If it dries and solidifies, it becomes difficult to restart the screw conveyor, and in the worst case, the incinerated material may catch fire and burn.

In order to avoid such a situation, when the furnace is shut down, the furnace side feeding device is removed from the incinerator, a blind plate is attached to the opening of the incinerator, and when the furnace restarts, the furnace side feeding device is incinerated again. This is done by attaching it to the furnace.

An object of the present invention is to eliminate the drawbacks of the prior art described above, and to provide an incineration system that can prevent the incinerated material from drying, solidifying, and even igniting and burning when the incinerator is out of operation, and can maintain a sealed state. To provide a furnace incineration material supply device.

In short, the present invention provides a non-combustible material supply passage in the middle of the incineration material supply passage, fills the incombustible material into the incombustible material supply passage when the incinerator is out of operation, and maintains a sealed state in the passage. ,? It is designed to prevent the drying, solidification, and combustion of JI materials.

The present invention will be described in detail below with reference to the drawings.

In FIG. 2 illustrating an embodiment of the present invention, an incineration material supply passageway is provided on the side of an incinerator 1 so as to communicate with the inside of the furnace 1A, and is provided with a screw conveyor 3 as an incineration material conveying means therein. A non-combustible material supply passage 7 is provided in the middle between the incinerator 1 and the hopper 4 in the incinerator 2, standing almost vertically. It is now possible to supply

A non-combustible material hopper 9 storing arbitrary non-combustible materials 8 is formed at the upper end of this non-combustible material supply passage 7.
A gate 10 is provided in the middle of the passage 7 to open and close the passage 7.

The non-combustible material 8 is not particularly limited, but for example, if a fluid medium in an incinerator or incinerated ash is used,
It is easily available and inexpensive, and as will be described later, post-processing is easy.

The effects of the incineration material supply device for an incinerator according to the above configuration will be explained.

When the incinerator is in operation, the gate 5 is opened, and the incinerated material 6 passes from the hopper 4 through the incinerated material supply passage 2 to the screw conveyor 3.
The incineration material 6 is supplied to one person in the furnace, and the incineration material 6 closes the incineration material supply passage 2 while moving, thereby maintaining a seal for one person in the furnace.

At this time, since the gate 10 is closed, the incombustible material 8
is not supplied into the incineration material supply passage 2, and the incineration material 6 does not escape from the incineration material supply passage 2 to the incombustible material supply passage 7.

When the operation of the incinerator is suspended, the gate 5 is closed and the gate 10 is opened.The incombustible materials 8 in the hopper 9 are supplied to the incombustible material supply passage 2 through the incombustible material supply passage 7, and As it is transported, it is gradually replaced with the incinerated material 6 and the incinerated material supply passage 2 is filled.

In this filling state, only a small amount of heat from the incinerator 1 reaches the incombustible material 6 due to the heat transfer resistance of the incombustible material 8 filled in the incombustible material supply passage 2 and its own cooling effect. Therefore, the situation in which the incinerated material 6 dries, solidifies, burns, etc. will occur at some point.

Therefore, in order to avoid this situation, it is not necessary to remove the incineration material supply device from the incinerator, and it is possible to promote automation of operation stoppage.

By the way, when a fluid medium is used as a nonflammable material,
It is also possible to replenish the fluidized medium during the operation of the incinerator.

Note that the sealed state of one person inside the incinerator while the incinerator is out of operation is maintained because the incineration material supply passage 2 is blocked with the incombustible material 8 filled.

When restarting the operation of the incinerator, the gate 5 is opened and the gate 10 is closed. The incinerated material 6 in the hopper 4 is supplied to the incinerated material supply passage 2, and as the screw conveyor 3 transports the incombustible material 8, the incombustible material 8 and The items will be replaced gradually, and the incombustible material 8 will be supplied to one person in the furnace.

The incombustibles 8 supplied to one person in the furnace are treated as incombustibles in the furnace, so there is no problem in incineration.

In particular, when a fluidized medium in a fluidized bed incinerator is used as the incombustible material 8, it will function as a fluidized medium, and when incinerated ash after incineration treatment is used, it will be used as incinerated ash along with other incinerated ash. Since it will be disposed of, there will be no problem at all.

FIG. 3 shows another embodiment of the present invention, and the difference between this embodiment and the previous embodiment is that instead of providing a noncombustible material storage hopper, the other end of the noncombustible material supply passage 7 is connected to an incinerator. The fluidized medium in the fluidized bed in the fluidized bed incinerator can be introduced into the passage 7 and used as the incombustible material 8 at any time.

In other words, in a fluidized bed, the fluidized medium behaves like water due to the fluidized air flowing from the bottom, causing it to flow.
If an overflow is cut at that position, the incombustible material supply passage 7 is filled with the fluid medium, and by opening the gate 10, the fluid medium is supplied into the incineration material supply passage 2.

According to this embodiment, since the fluidized medium can be used as the non-flammable material 8 at any time, it is possible to further automate the suspension of operation of the incinerator, and additional equipment such as a hopper can be omitted. Costs can be controlled.

FIG. 4 shows yet another embodiment of the present invention. This embodiment differs from the previous embodiment in that the combustible material supply passage 2 is larger than the non-combustible material supply passage 1 on its outer periphery. Another feature is that a cooling means 11 is provided near the incinerator 1 and includes a flow channel through which cooling water circulates.

According to this embodiment, the cooling means 11 promotes heat dissipation from the incombustible materials 8 that are filled in the incineration material supply passage 2 and in contact with the heat source when the incinerator is out of operation, and transfers heat to the incombustible materials 6. Heat can be further reduced.

Note that the cooling means 11 is not limited to a water-cooled structure as shown in the illustrated example, but may also be an air-cooled structure, and can also be applied to the embodiment shown in FIG.

In the embodiments shown in FIGS. 2 and 4, a fluidized incinerator was particularly described, but a mobile incinerator may also be applied in these cases.

As described above, according to the present invention, since the incombustible material supply passage is provided in the middle of the combustible material supply passage, solidification, ignition, and combustion can be prevented when the incinerator is out of operation.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a conventional example, FIG. 2 is a side sectional view showing an embodiment of the incinerator incineration material supply device according to the present invention, and FIG. 3 is a side sectional view showing another embodiment of the present invention. FIG. 4 is a side sectional view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Incinerator, 2...Incineration material supply passage, 3...Screw conveyor, 6...Incineration material, 7...Incombustible material supply passage, 8...Incombustible material, 9... Hopper, 10...
Gate, 11... Cooling means.

Claims (1)

[Scope of Claims] 1. An incineration material supply device for an incinerator, comprising an incineration material supply passage provided in a part of the incinerator so as to communicate with the inside of the furnace, and an incineration material conveying means provided in this passage. An incineration material supply device for an incinerator, characterized in that a noncombustible material supply passage is provided in the middle of the incombustible material supply passage, and an opening/closing gate is provided in the noncombustible material supply passage. 2. The incineration material supply device for an incinerator according to claim 1, wherein the noncombustible material supply passage includes a hopper for storing noncombustible materials. 3 Claim 1 in which the incinerator is a fluidized incinerator
The incineration material supply device for the incinerator according to item 1 or 2. 4. The incineration material supply for the incinerator according to claim 3, wherein the other end of the noncombustible material supply passage communicates with the inside of the incinerator and introduces a part of the noncombustible material in the furnace into the passage. Device. 5 Claim 1 in which the incineration material supply passage is provided with a cooling means on the outer periphery on the incinerator side from the position of the non-combustible material supply passage.
The incineration material supply device for an incinerator according to any one of items 1 to 4.