JPH09257230A - Movable ash humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the installation charge of a facility and save a charge for civil engineering by simplifying the humidifying and cooling device of incineration ash in a waste incinerating facility. SOLUTION: A water sealing device 3 is provided around an opened upper end, a door for taking out a container, having air-tight structure, is provided in front of a device, an elevatable receiving vessel 1, in which container guiding means 14, 15 are arranged on the bottom surface thereof, and a water injection device, arranged above the receiving vessel 1 and injecting water into the inside of a device, are provided. In this case, an ash chute 51, provided with a water sealing plate 56 submerged into the water sealing tank 31 of the water sealing device 3 when the receiving vessel 1 is elevated, and a container 2, whose upper surface opening unit is connected to the lower end of the ash chute 51 when the receiving vessel 1 is elevated and capable of reserving a specified amount of water therein, are provided. The water injecting device is provided with a water pouring nozzle and a water ejecting nozzle 52. A water level detector is provided in the water sealing device 3 and the water ejecting nozzle 52 is controlled based on the measurement of water level through the water level detector.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable ash humidifier for humidifying and cooling incinerator ash discharged from a refuse incinerator for incinerating general waste or industrial waste, and particularly to a small-scale refuse incinerator. A mobile ash humidifier which is preferably utilized.

[0002]

2. Description of the Related Art In the case of a large-scale refuse incineration facility, an ash humidifying device discharges wet ash that has been humidified and cooled in an ash cooling water tank by an ash extrusion device or an ash conveyor and stores it in an ash pit. However, in the case of a small scale, the general method is to temporarily store the above-mentioned wet ash in a container.

FIG. 6 shows an example of an ash humidifier and a method for carrying out wet ash in a conventional small-scale waste incineration facility, which is a block diagram showing an outline of a rigid incinerator, an ash cooling water tank, and a container carrying-out system. Is.

The high temperature incineration ash b incinerated in the incinerator a in the state shown on the right side of FIG. 6 is as shown on the left side of FIG.
After the load of the upper dust is supported by the dust support plate c, the discharge means d is opened, so that the wet ash f is discharged from the incinerator a into the ash cooling water tank e to be humidified and cooled.

When the incineration ash b is completely discharged from the incinerator a, the discharging means d is closed and the dust support plate c is opened to discharge the incinerator ash b and the dust above the dust support plate c. It falls on the means d and becomes the state on the right side, and returns to the incineration work again.

On the other hand, the wet ash f is drained at the sloping end portion and stored in the container h while being transferred by the ash conveyor g submerged in the ash cooling water tank e.

When a certain amount of wet ash f in the container h is accumulated as the incineration work progresses, the container h is hoisted by the hoist i, the wet ash f inside is transferred to the ash delivery vehicle j, and then is transferred to the outside of the site. Carry out.

[0008]

Although the conventional ash humidifying apparatus as described above can completely humidify and cool the incinerated ash b, the ash conveyor g does not sufficiently dehydrate the ash and it is transported by the ash delivery vehicle j. Not only does the wastewater treatment cost money because the sewage contained therein drips into it and poses a pollution problem, but also the quality of a large amount of cooling water in the ash cooling section water tank e deteriorates, and scum floating on the water surface It took effort to remove it.

Furthermore, since the ash humidifying device including the ash cooling water tank e and the ash conveyor g is large and requires a large installation space and often has a basement structure, not only the facility cost but also the earth building cost are required. It was getting expensive.

As a measure for saving the above-mentioned installation place, the technique of a mobile clinker hopper having a seal trough at the upper end as shown in JP-B-3-20643 and JP-A-7-217855 can be applied. Both methods use a water storage hopper to humidify and cool the clinker ash falling from the boiler furnace, so that pollution of the cooling water cannot be avoided and a large amount of sludge is discharged when the ash is carried out. There was a problem.

Further, if a seal trough is provided, the clinker hopper can be easily moved when inspecting and repairing the inside of the boiler, and it is effective as a gap for absorbing thermal expansion of the boiler, but positioning work of the clinker hopper is complicated. Therefore, this method cannot be applied to the ash humidifier of a small-scale incinerator with few employees.

[0012]

In the movable ash humidifier according to claim 1 of the present invention, a water sealing device is provided around the opened upper end, and a container take-out door having an airtight structure is provided on the front face. A storage container having container guide means on the bottom surface, which can be moved up and down, and a water injection device which is arranged above the storage container and injects water into the storage container. An ash chute provided with a water sealing plate that submerges in the water sealing tank of the sealing device to shut off the inside of the storage container and the outside air, and is provided so as to be able to move in and out of the storage container when the storage container rises. An upper surface opening is connected to the lower end of the ash chute, and a container capable of storing a predetermined amount of water is provided inside.

According to a second aspect of the present invention, in the movable ash humidifying device, a water sealing device is provided around the opened upper end and container guide means is provided on the bottom surface, and the container is movable up and down and horizontally at the descending position. A storage container that is movable in any direction, and a water injection device that is disposed above the storage container and injects water inside are provided, and when the storage container rises, it is submerged in the water sealing tank of the water sealing device. And an ash chute provided with a water sealing plate that shuts off the inside of the storage container from the outside air, and an ash chute that can be inserted into and removed from the storage container and has an upper opening when the storage container rises and a lower end of the ash chute. And a container capable of storing a predetermined amount of water therein.

In the movable ash humidifier according to claim 3 of the present invention, the water injection device is a water injection nozzle that stores water in a container, and a water that mainly controls a temperature rise of exhaust gas generated inside the device. And an injection nozzle.

In the movable ash humidifier according to claim 4 of the present invention, the water sealing device is provided with a water level detector for measuring the water level of the water sealing device, and based on the measurement of the water level by the water level detector. The water injection nozzle is configured to be controlled.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

Although various types of small-scale refuse incinerators are in practical use, the intermittent incinerator ash discharge method in the rigid incinerator will be described as a typical example.

1 to 3 show a movable ash humidifier according to a first aspect of the present invention, FIG. 1 is a side view showing the overall structure of the movable ash humidifier at a preparatory stage, and FIG. Fig. 3 is a vertical cross-sectional view showing the humidification / cooling work status of the ash humidifier
[Fig. 4] is a plan view showing an outline of a water sealing tank and a mud discharging tank.

In FIGS. 1 to 3, reference numeral 1 denotes a storage container. An airtight container take-out door 12 is attached to the front surface of a container body 11 for storing a container 2, which will be described later, and an upper end of the container body 11 is provided. A water sealing device 3 described later is welded along the periphery, and an inner space surrounded by the water sealing tank 31 forms an opening 13.

Inside the container body 11, there is provided container guide means for positioning the container 2 at a fixed point, for example, a guide rail 14 and a stop plate 15, and the container 2 is housed outside. A plurality of hydraulic cylinders 16 for moving the storage container 1 up and down together with the water sealing device 3 are provided with a drive source and flexible pipes (not shown).

Container 2 used for receiving and carrying out incinerated ash
Is, for example, a box-shaped container whose wall surface forming the upper opening has an inclined surface 21 that is gently inclined to the outside. The outer bottom surface has a plurality of means for moving along the above-mentioned guide means. Wheels 22 are provided, and a plurality of handles 23 for lifting the container are attached to the outer surface thereof.

The water-sealing tank 31 is a groove-shaped container circulated along the upper edge of the container body 11. The outer wall of the water-sealing tank 31 has a portion for measuring and controlling the water level in the water-sealing tank 31. A certain water level tank 32, a plurality of water supply points 33 and a plurality of mud discharge tanks 34 are provided.

Further, a water level control valve 35 for controlling the amount of water supplied from a flexible water supply pipe (not shown) and a water distribution pipe 36 for connecting a plurality of water supply points 33 are provided, and a sludge tank 34 is provided. A sludge discharge valve 37 with a sludge discharge pipe is attached to the bottom portion, and sludge accumulated in the sludge discharge tank 34 is discharged to a side groove (not shown).

A scum discharge portion 39 is provided on one side surface of the sludge discharge tank 34 through a weir 38.

Further, the bottom surface of the water sealing tank 31 has the apex at the front part of the water level tank 32 or a plurality of water supply points 33 in order to allow the sludge settling and accumulating on the bottom surface to flow down to the sludge tank 34. An inclined surface is formed so that the plurality of sludge discharge tanks 34 are at the lowest level.

The above-described water sealing tank 31, water level tank 32, and sludge tank 3
4, the water level control valve 35, the water distribution pipe 36, the mud discharge valve 37, and the scum discharge part 39 constitute the water sealing device 3.

On the other hand, a discharging means 43 for discharging the high temperature incineration ash 42, which is the residue of the dust incinerated inside the incinerator body 41, at the bottom of the incinerator body 41 together with a drive mechanism (not shown). The discharging means 43 is provided.
An ash chute 51 for connecting the lower end of the ash chute 51 to the inclined surface 21 of the container 2 is connected to the bottom of the ash chute.

The ash chute 51 has high-temperature incinerated ash 4
A plurality of water injection nozzles 52 for controlling the temperature of the high-temperature exhaust gas 7 filled in the ash chute 51 during the humidifying / cooling step 2 are provided via a control valve 53. The water injection nozzle 52 also has a function of humidifying and cooling the high temperature incineration ash 42.

Further, the ash chute 51 is also provided with a water injection nozzle 54 for injecting water into the container 2 via an opening / closing valve 55.

Around the outer periphery of the ash chute 51 below these nozzle groups, when the container 2 is raised from the position shown in FIG. 1 to the position shown in FIG. The plate 56 is welded to seal the inside of the container body 11 from the outside air with water.

The gap K between the inner wall of the water sealing tank 31 on the side of the opening 13 and the inner surface of the water sealing plate 56 is narrow enough to accommodate an error in the installation position of the container 2 and thermal expansion of the ash chute 51. Therefore, the dust scattered when the high temperature incinerated ash 42 falls is prevented from entering the water sealing tank 31.

The operation of the movable ash humidifier constructed as described above will be described with reference to FIGS. 1 to 4.

FIG. 4 is a system diagram showing an outline of the control system of the present invention.

As a preparatory work, first, the container take-out door 1
2 is manually opened, and the container 2 that has been standing by outside the movable ash humidifier is guided by the guide rail 14 inside the container body 11.
If it is carried in along the stop plate 15 so as to come into contact with the stop plate 15, the container 2 and the opening 13 and the ash chute 51 are placed in a fixed position where the centers thereof match, and then the container take-out door 12 is sealed (see FIG. 1). See state).

Next, the water level in the water sealing tank 31 is measured by the water level detector 61 installed in the water level tank 32, and the water level control valve 35 is opened in response to a command from the control device 6, so that a plurality of water supply points 33 are supplied. Water is supplied to the water sealing tank 31 and the sludge discharging tank 34 to reach the specified water level.

Subsequently, the hydraulic device 62 is activated, the lift control valve 63 is operated to push up the hydraulic cylinder 16, and the container 1 containing the container 2 is lifted together with the water sealing device 3 from the bottom surface. As shown in FIG. 2, the inclined surface 21 of the container 2 is in close contact with the lower part of the ash chute 51, and the incinerator body 41
The inside and the inside of the container 2 are in a simple mechanical sealing state with the inside of the container body 11. At the same time, since the water sealing plate 56 is submerged in the water sealing tank 31, the inside of the container body 11 and the outside air are completely water-sealed, and the preparation work of the first stage is completed.

Before starting the incineration work, the on-off valve 55 is first opened for a certain period of time according to a command from the control device 6, water is injected from the water injection nozzle 54 into the container 2, and the amount of the incineration ash 42 discharged is matched. After storing only water for moisture absorption and cooling,
A water curtain is formed in the ash chute 51 by opening the control valve 53 and injecting from a plurality of water injection nozzles 52.

If the above conditions are satisfied, the discharge control valve 64 is operated to move the discharge means 43 from the horizontal position shown by the solid line in FIG. 2 to the half open position shown by the one-dot chain line by a drive mechanism (not shown) such as a hydraulic cylinder. Rotate gently.

As a result, it is incinerated in the incineration work the day before,
The lower layer portion of the high-temperature incineration ash 42 staying on the discharge means 43 is humidified and cooled while dropping little by little in the water curtain described above, and absorbs the water accumulated in the container 2 to further humidify it. Since the wet ash 44 is cooled and has a sufficient amount of water, there is no exuding water, and there is no fear of ash sewage treatment or sewage dripping during transportation.

Subsequently, the discharging means 43 is returned to the horizontal position indicated by the solid line, and the high temperature incinerated ash 42 remaining on the discharging means 43 is discharged.
The incineration work will be started using the heat retained by.

When the amount of the incineration ash 42 in the incinerator body 41 increases as the incineration work progresses, and the incineration is hindered, the above-mentioned discharging work is performed.

Here, the high-temperature exhaust gas 7 containing dust and water vapor generated during the humidification / cooling process fills the inside of the ash chute 51 and the upper portion of the container 2, most of which is incinerated as indicated by the double line. Backflow into the furnace body 41.

However, the leakage gas 71 ejected into the container body 11 from a slight gap between the ash chute 51 and the inclined surface 21.
Is the water sealing tank 31 and the ash chute 5 formed in the opening 13.
1, the water surface of the gap K inside the water sealing tank 31 is pressed through the gap L with respect to 1, and the water surface of the outside M of the water sealing tank 31 is raised.
The surface water on the side flows over the weir 38 provided at one corner of the sludge discharge tank 34 and overflows to the scum discharge section 39.

After that, the high temperature exhaust gas 7 filled in the ash chute 51 is gradually cooled and reduced in volume by continuous water injection from the water injection nozzle 52, and the water surface of the gap K which has been pressurized thereby rises. Then the water level on the M side drops,
As a result of the above-mentioned overflow, the water level in the water level tank 32 becomes lower than the initial state.

The state of change of the water level is measured by the water level detector 61, and when the water level in the water level tank 32 drops to the set value, the control valve 53 is closed to stop the water injection and the water level control valve 35 is turned on. It is opened and water is supplied to restore the water level in the water sealing tank 31.

When the above-mentioned leaked gas 71 is ejected, the dust entrained in the leaked gas 71 is divided into a substance reaching the water sealing tank 31 through the gap K and a substance settling at the bottom of the container body 11.

Part of the dust reaching the water sealing tank 31 is settled at the bottom of the water sealing tank to become sludge, and since the bottom surface is inclined, it flows down to the sludge discharging tank 34 side at the time of water supply.

When sludge accumulates in the sludge tank 34 due to long-term operation, the sludge discharge valve 37 is manually opened to discharge the sludge to a ditch (not shown).

On the other hand, the dust floating on the water surface of the water sealing tank 31 is in a scum state, and when the above-mentioned overflow occurs, the dust is automatically discharged together with the surface water through the scum discharging portion 39 to a side groove (not shown).

The container 2 is generally a wet ash 4 for one day or more.
It has a capacity to receive 4 and can carry out such an operation once a day.
When the predetermined incineration work is completed by repeating the process once or several times, the container body 11 and the container 2 are lowered by the hydraulic cylinder 16, and then the container take-out door 12 is manually opened.
The container 2 is pulled out from the container body 11 to remove dust from the bottom of the container body.

Subsequently, the container 2 is hoisted by a unloading device such as a hoist (not shown), and the wet ash 44 in the container 2 is transferred to an ash delivery vehicle (not shown) to complete the work.

FIG. 5 is a vertical cross-sectional view showing the structure of the movable ash humidifying device according to the second aspect and the humidifying / cooling work situation. The parts having the same functions as those of the movable ash humidifier according to claim 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 5, a plurality of wheels 11a are provided on the outer bottom surface of the container body 11 having the opening 13 formed on the upper surface and the water sealing device 3 welded around the upper end, and are laid on the floor surface. The guide track 11b can be moved to a fixed point, which is a stop position (not shown).

The container 2 whose side wall surface is a vertical box is
The container 2, the opening 13, and the ash chute 5 are installed by being guided and installed in a rectangular guide frame (container guiding means) 17 having an inclined surface on the inner bottom surface of the container body 11.
The centers of 1 match.

A mounting bracket 18 is provided on the outer frame of the container body 11, and the mounting bracket 18 is detachably attached to the mounting portion at the lower end of the hydraulic cylinder 16 suspended from the upper structure.

Therefore, the storage container 1 in which the container 2 is stored
By arranging at the stop position on the guide track 11b, the mounting bracket 18 of the container body 11 and the mounting portion of the hydraulic cylinder 16 can be easily connected.

As a result, as a preparatory work, after the storage container 1 is connected to the hydraulic cylinder 16 as described above, the hydraulic cylinder 16 is driven to show the storage container 1 by a chain line from the floor indicated by a solid line. By pulling up to the position, the inside of the incinerator body 41 and the outside air are water-sealed by the water sealing plate 56 submerged in the water sealing tank 31.

When the wet ash in the container 2 is to be discharged, the storage container 1 is lowered and separated from the hydraulic cylinder 16, and then the storage container 1 is guided to a predetermined position by a guide track 11
Then, the container 2 in the storage container 1 is lifted by a carrying-out device such as a hoist (not shown), and the wet ash in the container 2 is transferred to an ash carry-out vehicle (not shown) to finish the work. .

The basic structure and operation other than the above are the same as those of the movable ash humidifier according to claim 1 described above.

Incidentally, in this embodiment, the container 2
Shows a box-shaped object, any shape may be used, and the water injection nozzle 52 and the water injection nozzle 54 are controlled by separate systems, but the water injection nozzle 54 may be eliminated and only the water injection nozzle 52 may be used. .

Although the incineration ash 42 has been described as being discharged intermittently, the cooling water to be poured and stored in the container 2 may be stopped when the incineration ash 42 is discharged continuously.

Further, the hydraulic cylinder 16 and the discharging means 43
Although the hydraulic operation has been described, any type of drive source may be used, and the water injection stop operation may be performed by lowering the temperature in the ash chute 51.

[0063]

As described above, according to the movable ash humidifier according to the first or second aspect of the present invention, the container guiding means can easily position the container in the storage container. Therefore, by raising this storage container, the container and the ash chute can be easily brought into close contact with each other, and the water sealing plate submerges in the water sealing tank to shut off the water inside the storage container from the outside air. Moreover, since the water injection device is provided in the ash chute, the ash humidification device can be made compact, and the equipment cost and the construction cost can be reduced.

According to the movable ash humidifier of the third aspect, the water is injected into the container by the water injection nozzle to mainly humidify and cool the ash, and the temperature of the exhaust gas generated inside the device by the water injection nozzle. By mainly controlling the rise,
Humidification and cooling of ash can be performed with a small amount of water, not only can dripping sewage from the ash unloading vehicle during transportation be prevented, but since a large amount of ash cooling water is not used, ash sewage treatment is not required There is no risk of sludge discharge.

According to the movable ash humidifier of claim 4,
By controlling the water injection nozzle based on the measurement of the water level by the water level detector, the water injection control is automatically performed and the sludge and scum of the water sealing device can be easily discharged. Is easy.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of a movable ash humidifier according to claim 1.

FIG. 2 is a vertical cross-sectional view showing a humidifying / cooling work situation of the movable ash humidifying device according to claim 1.

FIG. 3 is a plan view showing a configuration around a water sealing tank and a sludge discharging tank in the movable ash humidifying device according to claim 1.

FIG. 4 is a system diagram showing an outline of a control system of a movable ash humidifier.

5 is a structure of the movable ash humidifier according to claim 2, and FIG.
It is a longitudinal cross-sectional view showing a humidification / cooling work situation.

FIG. 6 is a side view showing a schematic configuration of a conventional ash humidifier.

[Explanation of symbols]

 1 Storage Container 12 Container Door 2 Container 3 Water Sealing Device 31 Water Sealing Tank 51 Ash Chute 52 Water Injection Nozzle 54 Water Injection Nozzle 56 Water Sealing Plate 61 Water Level Detector

Claims (4)

[Claims] 1. A vertically movable storage container provided with a water sealing device around the opened upper end, an airtight container take-out door provided on the front face, and container guide means provided on the bottom face, A water injection device for injecting water is provided inside the storage container, and when the storage container rises, it is submerged in a water sealing tank of the water sealing device to water the inside and outside air of the storage container. An ash chute provided with a water sealing plate for shutting off and provided in the storage container so that it can freely move in and out, and when the storage container rises, the upper surface opening is connected to the lower end of the ash chute, and a predetermined amount of water is stored inside. A movable ash humidifier, which is provided with a container capable of storing. 2. A storage container provided with a water sealing device around the opened upper end and container guide means on the bottom surface, and a storage container which can be moved up and down and horizontally in a lowered position, and a storage container of the storage container. A water injection device for injecting water is provided inside, and when the storage container rises, it is submerged in the water sealing tank of the water sealing device to shut off the inside of the storage container from the outside air. An ash chute provided with a water sealing plate and a storage container that can be inserted into and removed from the storage container, and when the storage container rises, the top opening is connected to the lower end of the ash chute to store a predetermined amount of water inside. Movable ash humidifier, which is equipped with various containers. 3. The water injection device comprises a water injection nozzle that stores water in a container, and a water injection nozzle that mainly controls a temperature rise of exhaust gas generated inside the device. The movable ash humidifier according to 1 or 2. 4. The water seal device is provided with a water level detector for measuring the water level of the water seal device, and the water injection nozzle is controlled based on the measurement of the water level by the water level detector. The movable ash humidifying device according to claim 3, wherein