JP2889831B2 - Garbage incineration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a garbage pit for storing garbage to be incinerated, and an incinerator for incinerating the garbage, and introduces combustion air from the garbage pit to the incinerator using the air in the garbage pit as combustion air. The present invention relates to a garbage incineration facility including a path and a deodorizing discharge path that sucks air in a garbage pit, deodorizes and discharges the air to the outside air through a flow path different from the combustion air introduction path.

[0002]

2. Description of the Related Art In this kind of refuse incineration equipment, by using air in a refuse pit as combustion air in an incinerator, it is possible to incinerate odors generated from refuse. Further, in this structure, by sucking the air in the dust pit, the inside of the pit is kept at a lower pressure than the outside air, and the odor from the dust pit itself can be prevented from being released to the outside air. On the other hand, when the operation of the incinerator is stopped, the air in the pit is discharged to the outside in a deodorized state through a deodorizing discharge path provided in the garbage pit.

[0003]

However, in such a refuse incineration facility, when there are a plurality of incinerators provided in the facility, part of the incinerators is shut down, and the incinerator is provided with combustion air. The air in the garbage pit may not be sucked through the introduction path. Furthermore, even in an incinerator during operation, the amount of combustion air required for treatment varies depending on the amount of refuse to be charged or the amount of heat held by the refuse. Therefore, the amount of air sucked into the combustion air introduction path side from the dust pit varies. When such a situation occurs, for example, when the amount of sucked air is small, odor leaks from the dust pit to the outside. was there.

Accordingly, it is an object of the present invention to provide a refuse incineration facility in which, even when the amount of air in a refuse pit sucked and guided to the furnace fluctuates or decreases in relation to the operating conditions of the furnace, a bad odor does not easily leak to the outside. It is in.

[0005]

In order to achieve this object, a characteristic feature of a refuse incineration system according to the present invention is a supply air amount detection for detecting an amount of combustion air supplied to an incinerator from a combustion air introduction passage. Equipped with a mechanism, the operation of the incinerator was stopped,
When the air in the pit is sucked from the garbage pit in a state where the combustion air is not supplied into the incinerator, a storage means for storing a required suction air amount capable of maintaining the inside of the garbage pit in a negative pressure state is provided. Deodorizing and releasing control means for controlling the release of air from the dust pit through the deodorizing and releasing path from the garbage pit to the amount of air corresponding to the difference between the amount of air and the amount of combustion air detected by the air amount detecting mechanism.
The effects are as follows.

[0006]

In other words, the required suction air amount is stored in the storage means in advance, and the state in which the required suction air amount is constantly sucked is realized by the provision of the deodorizing and releasing control means. That is, the amount of combustion air supplied to the incinerator from the combustion air introduction path is detected by the supply air amount detection mechanism, and the difference between the amount of combustion air and the required suction air amount is determined. And, by the function of the deodorization release control means,
At least the air in the dust pit of this difference is deodorized and released via the deodorizing release path. Therefore, from the garbage pit, the required suction air amount is always discharged through the combustion air introduction passage and the deodorization discharge passage,
The internal pressure in the garbage pit is always kept at a constant negative pressure. Therefore, even if the amount of refuse treated is reduced, the odor does not leak to the outside.

[0007]

As a result, it is possible to obtain a refuse incineration facility in which a bad odor hardly leaks to the outside even if the amount of air in the refuse pit sucked and guided to the furnace side fluctuates or decreases in relation to the operation state of the furnace.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
A garbage collection vehicle 1 for transporting garbage, a garbage input chamber 3 for charging garbage into the garbage pit 2, and an incinerator 4 for garbage.
Garbage pit 2 equipped with a crane 5 for transporting inside
Further, the incinerator 4 is provided.

[0009] As shown in FIG.
In a posture in which the garbage truck 1 tilts the collection box 1a with respect to the garbage pit 2, the garbage can be dropped and thrown in.
The system is provided with a platform 6, and a flexible door 7 is provided between the dust input chamber 3 and the dust pit 2. Further, a crane control chamber 8 is provided above the refuse input chamber 3, and the control from the chamber 8 controls the input of refuse from the refuse pit 2 to a hopper 9 provided in the incinerator 4. Have been. The garbage input chamber 3 and the space formed above the garbage pit 2 connected to the garbage chamber 3 are closed by the building 10, and the odor generated from the garbage is difficult to dissipate from this space. Have been. However, when a garbage truck enters and exits, a predetermined entrance is opened and closed.

Further, the dust pit 2 is provided with a deodorizing discharge passage 11 for sucking air in the dust pit 2 and deodorizing and discharging it to the outside air. The deodorizing discharge passage 11 is provided on the upper side of the hopper 9 provided in the incinerator 4, and includes a pair of seal dampers 12, a deodorizing fan 13 provided between these dampers 12, and a filter. 14, a deodorizing device 15 and the like. Here, the filter 14 is provided for the purpose of removing solids having a relatively large particle size, and as the deodorizing device 15, an adsorbing type deodorizing device having an activated carbon layer is used. By the way, the aforementioned deodorizing fan 13
As will be described later, the number of rotations is controlled by the deodorization control device 16 in accordance with the processing status of the refuse in the refuse incinerator 4,
The discharge flow rate from the deodorizing discharge path 11 is determined.

As shown in FIG. 1, the refuse incinerator 4 is a hopper 9 for temporarily accumulating refuse as incineration material, a combustion chamber 17 for incinerating the refuse, and collecting ash incinerated in the combustion chamber 17. It has an ash pit 18 and the like. A pusher 1 is provided below the hopper 9 to reciprocate by a hydraulic mechanism (not shown) and to feed dust into the combustion chamber 17 little by little.
9 is provided.

The combustion chamber 17 is provided with a stoker-type incineration treatment zone 20 including a drying zone A for drying the refuse input by the pusher 19 while stirring and transporting the garbage, a combustion zone B for burning, and a post-combustion zone C for incineration. And a blower mechanism 21 for supplying air for combustion from below the incineration zone 20;
A flue 23 having a waste heat boiler 22 is provided on the upper exhaust side of the incineration zone 20. More specifically, in the stoker-type incineration zone 20, movable grates are alternately arranged with respect to fixed grates in the conveying direction, and the movable grates are slid vertically by a hydraulic mechanism (not shown). A wind box 21c which transports dust by moving the air from the press-in blower 21a and distributes the air under the incineration treatment zone via the air passage 21b.
It is configured to supply to. Furthermore, this incinerator 4
Is provided with a secondary combustion blower 21d for supplying air for secondary combustion to the upper space of the combustion flame formed in the combustion chamber 17, and the air from the blower 21d promotes the secondary combustion. To complete combustion. These blowers 21a,
21d is configured to suck air from inside the garbage pit 2 and supply it to a predetermined portion of the incinerator 4, so that the odor generated from the garbage pit can also be burned and deodorized. Here, an air passage for guiding the air in the pit from the garbage pit 2 into the incinerator 4 is connected to a combustion air introduction passage 20.
Call it 0. Further, these blowers 21 a and 21 d are controlled by the combustion control device 100. Combustion control device 100
In addition to the blowers 21a and 21d, the operation control of the pusher 19, the waste heat boiler 22, and the like is also performed.

The deodorizing structure of the dust pit 2 which is a characteristic structure of the present invention will be described below. As described above, air in the pit with odor is sucked from the dust pit 2 from two systems, that is, the deodorizing and discharging path 11 and the path 200 through the blowers 21a and 21d. The combustion air introduction path 200, which is a path through the above-described blowers 21a and 21d, is provided with a supply air amount detection mechanism 201 that detects the amount of combustion air supplied to the incinerator 4 from this path. . Specifically, it is a flow meter F. In addition, incinerator 4
When the air in the pit is sucked from the garbage pit 2 only from the deodorizing and discharging path 11 in a state where the operation of the pit is stopped and the combustion air is not supplied into the incinerator, the required suction air capable of maintaining the inside of the garbage pit in a negative pressure state Storage means 2 for storing the amount
02 (memory for storage). Specifically, an example of the required amount of suction air is shown below. When the above-described door 7 provided between the trash input chamber 3 and the trash pit 2 is opened, the required amount of air is The air in the dust pit 2 above the platform 6 is determined as an amount that can be ventilated twice per unit time.

The deodorizing control device 16 for controlling the operation of the above-mentioned deodorizing fan 13 supplies at least air corresponding to the difference between the required suction air amount and the combustion air amount detected by the air amount detection mechanism 201 to the dust pit. Deodorizing release path 11 from 2
A deodorizing release control means 203 (control program) for controlling the release through the controller is provided. Therefore, when operating the refuse incineration equipment, the refuse incinerator 4 is operated,
When refuse incineration is performed, the amount of air in the pit required for refuse disposal is introduced into the furnace through the combustion air introduction passage 200, and the difference in the difference is discharged through the deodorization discharge passage 11. More than a minute of air in the pit is released to the outside. Therefore, in the former case, the odor is decomposed with the combustion, and in the latter case, the odor is deodorized in the deodorizing and discharging path 11, so that the odor does not leak. Further, since the inside of the pit is maintained at a reduced pressure with respect to the atmosphere, the odor does not leak from the garbage pit 2 and the building 10 constituting the garbage charging chamber 4 unexpectedly.

[Alternative Embodiment] In the above embodiment, in order to define the required suction air amount, both the volume of the dust input chamber 3 and the volume of a portion of the dust pit 2 located higher than the platform 6 are determined. Is defined as the amount of air that can be exhausted twice per unit time in the volume obtained by summing the above conditions, as long as the condition that the odor is not leaked from both of the above is satisfied in a state where the furnace is not operated. Only the road 11 may be operated to determine the minimum suction amount at which odor does not leak to the outside. Furthermore, a trial operation may be performed tentatively to determine the maximum suction amount that satisfies the above conditions. In addition, in actual operation, it is needless to say that the required suction air amount is appropriately updated to an appropriate value, and it is needless to say that the required amount of suction air is changed in season, day and night. Further, in the above embodiment,
Although a memory is used as the storage means, it can be of any type, such as an electrical type or an electronic type, in addition to being configured as a mechanical mechanism.

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 is a diagram showing a configuration of a refuse incineration facility of the present application.

[Explanation of symbols]

 Reference Signs List 2 garbage pit 4 incinerator 11 deodorizing and releasing path 200 combustion air introducing path 201 supply air amount detecting mechanism 202 storage means 203 deodorizing and releasing control means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masayuki Yuguchi 2-47, Shikitsuhigashi, 1-chome, Naniwa-ku, Osaka-shi, Osaka (56) References JP-A-52-124780 (JP, A) JP-A-56-34012 (JP, A) JP-A-51-20481 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F23G 5/50

Claims (1)

(57) [Claims] The incinerator includes a garbage pit (2) for storing garbage to be incinerated, and an incinerator (4) for incinerating the garbage, wherein air in the garbage pit (2) is used as combustion air. The combustion air introduction passage (200) leading to (4) and the combustion air introduction passage (200) are suctioned from the dust pit (2) through a different flow path, and deodorized to outside air. Deodorizing release path (1
(1) a refuse incineration facility comprising: a supply air amount detection mechanism (20) for detecting an amount of combustion air supplied to the incinerator from the combustion air introduction path (200);
In the state where the operation of the incinerator (4) is stopped and the combustion air is not supplied into the incinerator, the air in the pit is sucked from the garbage pit (2). A storage unit (202) for storing a required suction air amount that can be maintained in a negative pressure state, at least a difference between the required suction air amount and the combustion air amount detected by the air amount detection mechanism (201); Deodorizing and releasing control means (2) for controlling the release of only the air from the dust pit (2) through the deodorizing and releasing passage (11).
03) Garbage incineration equipment.