JP2984210B2 - Mobile ash humidifier - Google Patents

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 incinerated ash discharged from a refuse incinerator for incineration of general waste and industrial waste, and more particularly to a small-scale refuse incinerator. It relates to a mobile ash humidifier which is preferably used.

[0002]

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

FIG. 6 shows an example of a conventional ash humidifier and a method of discharging wet ash in a small-scale refuse incineration plant, and is a configuration diagram schematically showing a solid incinerator, an ash cooling water tank, and a container discharge method. It is.

In the state shown on the right side of FIG. 6, high-temperature incineration ash b incinerated in the incinerator a is, as shown on the left side of FIG.
After the load of the upper refuse is supported by the refuse support plate c, the discharge means d is opened, whereby the 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 has been discharged from the incinerator a, the discharging means d is closed and the refuse support plate c is opened, so that the ash b and the refuse above the refuse support plate c are discharged. It falls on the means d, becomes the state on the right side, and returns to the incineration work again.

[0006] On the other hand, the wet ash f is drained at the terminal inclined portion while being transferred by the ash conveyor g provided in the ash cooling water tank e, and stored in the container h.

[0007] With the progress of the incineration work, when a certain amount of wet ash f in the container h is accumulated, the container h is lifted by the hoist i, and the internal wet ash f is transshipped to the ash discharge vehicle j, and the ash is carried out. Take it out.

[0008]

The conventional ash humidifier as described above can completely humidify and cool the incinerated ash b, but has insufficient dehydration on the ash conveyor g and is transported by the ash discharge vehicle j. Not only does the scum contained in the ash cooling unit water tank e deteriorate the quality of the large amount of cooling water in the ash cooling unit water tank e, so that wastewater treatment is expensive, but also the scum floating on the water surface is caused. Removal required labor.

Further, the ash humidifier comprising the ash cooling water tank e and the ash conveyor g becomes long, requires a large installation space, and often has a basement structure. Had become expensive.

As a countermeasure for the above-mentioned saving of the installation place, the technology of a movable clinker hopper having a seal trough at the upper end as disclosed in Japanese Patent Publication No. Hei 3-20643 and Japanese Patent Application Laid-Open No. Hei 7-217855 can be applied mutatis mutandis. Both methods use a water storage hopper to humidify and cool the clinker ash falling from the boiler furnace, so that the cooling water is inevitably contaminated and a large amount of sludge is discharged when the ash is carried out. There was a problem.

Furthermore, the seal trough makes it easy to move the clinker hopper when inspecting and repairing the inside of the boiler, and is effective as a gap for absorbing the thermal expansion of the boiler, but the positioning operation of the clinker hopper is complicated. Therefore, this method cannot be applied to ash humidifiers in small-scale incineration facilities with few employees.

[0012]

The movable ash humidifier according to the first aspect of the present invention is provided with a water seal device around an opened upper end, a door for taking out a container having an airtight structure at a front surface, and the like. A storage container having a container guide means disposed on a bottom surface thereof, a storage container which can be moved up and down, and a water injection device which is disposed above the storage container and injects water into the storage container. An ash chute provided with a water seal plate that submerges in a water seal tank of a sealing device and water seals the inside of the storage container and the outside air, and is provided so as to be able to enter and exit the storage container, and when the storage container is raised The upper surface opening is connected to the lower end of the ash chute, and has a container capable of storing a predetermined amount of water therein.

According to a second aspect of the present invention, there is provided a movable ash humidifier, wherein a water seal device is provided around an open upper end, container guide means is provided on the bottom surface, and the ash humidifier is vertically movable and horizontally movable at a lowered position. A storage container that is movable in the direction, and a water injection device that is disposed above the storage container and injects water therein is provided, and is submerged in a water sealing tank of the water sealing device when the storage container is raised. An ash chute provided with a water sealing plate for water-sealing the inside of the storage container from outside air, and an ash chute provided so as to be able to enter and leave the storage container so that when the storage container is raised, an upper opening is formed at the lower end of the ash chute. And a container capable of storing a predetermined amount of water therein.

According to a third aspect of the present invention, in the movable ash humidifier, the water injection device includes a water injection nozzle for storing water in a container, and a water for mainly controlling a temperature rise of exhaust gas generated inside the device. And an injection nozzle.

According to a fourth aspect of the present invention, in the movable ash humidifier, the water seal device is provided with a water level detector for measuring a water level of the water seal device, and the water level is measured based on the water level measured by the water level detector. Thus, the water injection nozzle is controlled.

[0016]

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

Although various types of small-scale incinerators are actually used, an intermittent incineration ash discharge system in a solid incinerator will be described as a typical example.

FIGS. 1 to 3 show a movable ash humidifier according to the first aspect. FIG. 1 is a side view showing the entire structure of the movable ash humidifier in a preparatory stage. FIG. Longitudinal sectional view showing the humidification / cooling operation status of the dry ash humidifier, FIG.
FIG. 2 is a plan view showing an outline around a water sealing tank and a mud discharging tank.

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

The container body 11 is provided with a container guide means, for example, comprising a guide rail 14 and a stop plate 15 for positioning the container 2 at a fixed point. A plurality of hydraulic cylinders 16 for raising and lowering the storage container 1 together with the water sealing device 3 are provided with a drive source and flexible piping (not shown).

Container 2 used to receive and carry out incinerated ash
Is, for example, a box-shaped container in which the wall surface forming the upper opening has an inclined surface 21 which is gently inclined outward, and a plurality of moving surfaces along the guide means are provided on the outer bottom surface. Wheels 22 are provided, and a plurality of container lifting handles 23 are attached to the outer surface.

The water-sealing tank 31 is a groove-shaped container wrapped around the upper edge of the container main body 11, and has an outer wall provided with 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 drainage tanks 34 are provided.

A water distribution pipe 36 for connecting a water level control valve 35 for controlling the amount of water supplied from a flexible water supply pipe (not shown) and a plurality of water supply points 33 is provided. A sludge valve 37 with a sludge pipe is attached to the bottom to discharge sludge accumulated in the sludge tank 34 to a not-shown gutter or the like.

A scum discharge section 39 is provided on one side of the sludge tank 34 via a weir 38.

Further, the bottom of the water seal tank 31 has a vertex at the front of the water level tank 32 or at a plurality of water supply points 33 in order to allow the sludge settling and accumulating on the bottom to flow down to the sludge tank 34. An inclined surface having a plurality of sludge tanks 34 as the lowest level is formed.

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

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

The ash chute 51 has a high temperature incineration 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 humidification / 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 incinerated ash 42.

The ash chute 51 is also provided with a water injection nozzle 54 for injecting water into the container 2 via an on-off valve 55.

The outer periphery of the ash chute 51 below the nozzle group is provided with a water seal so that when the container 2 is raised from the position shown in FIG. 1 to the position shown in FIG. The plate 56 is welded, so that the inside of the container body 11 and the outside air are sealed off with water.

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

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

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

As a preparatory work, first, the container removal door 1
2 is manually opened, and the container 2 which has been on standby outside the movable ash humidifier is replaced with a guide rail 14 in the container body 11.
When the container 2 is brought into contact with the stop plate 15 along the line, the container 2 and the center of the opening 13 and the ash chute 51 fit in a fixed position, and thereafter, the container removal door 12 is closed (FIG. 1). State).

Next, the water level in the water seal tank 31 is measured by a water level detector 61 installed in the water level tank 32, and the water level control valve 35 is opened in accordance with a command from the control device 6. Then, water is supplied to the water sealing tank 31 and the mud discharging tank 34 to bring the water level to a specified level.

Subsequently, the hydraulic device 62 is activated, the elevating control valve 63 is operated, the hydraulic cylinder 16 is pushed up, and the storage container 1 storing the container 2 is raised together with the water seal 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,
The inside and the container 2 are in a simple mechanical seal with the inside of the container body 11. At the same time, the water sealing plate 56 is submerged in the water sealing tank 31, so that the inside of the container body 11 and the outside air are completely water sealed, and the first-stage preparation operation is completed.

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

When the above conditions are satisfied, the discharge control valve 64 is operated, and the discharge means 43 is moved from the horizontal position shown by the solid line in FIG. 2 to the half open position shown by the one-dot chain line in FIG. Rotate gently.

As a result, the waste was incinerated in the incineration work the previous day,
The lower part of the high-temperature incineration ash 42 remaining on the discharge means 43 is humidified and cooled while dropping little by little in the above-mentioned water curtain, and absorbs the water stored in the container 2 to further humidify and cool. Since the wet ash 44 is cooled and has a sufficient amount of water, the wet ash 44 has no exudation water, and there is no danger of ash sewage treatment or sewage dripping during transportation.

Subsequently, the discharging means 43 is returned to the horizontal position shown by the solid line, and the high-temperature incineration ash 42 remaining on the discharging means 43 is removed.
Start incineration work using the heat held by the company.

When the amount of the incineration ash 42 in the incinerator main body 41 increases with the progress of the incineration operation, which hinders the incineration, the above-described discharging operation 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 part of the container 2, most of which is incinerated as shown by a double line. It flows back into the furnace body 41.

However, the leaked gas 71 squirting into the container body 11 from a slight gap between the ash chute 51 and the inclined surface 21
Is a water seal tank 31 formed in the opening 13 and the ash chute 5
In order to pressurize the water surface of the gap K inside the water sealing tank 31 through the gap L with respect to 1 and raise the water surface of the outside M of the water sealing tank 31, M
The surface water on the side overflows the weir 38 provided at one corner of the mud tank 34 to the scum discharge unit 39.

After that, the high-temperature exhaust gas 7 filled in the ash chute 51 gradually decreases in temperature and volume due to continuous water injection from the water injection nozzle 52, whereby the water surface of the pressurized gap K rises. Then the water level on the M side falls,
As a result of the above overflow, the water level in the water level tank 32 becomes lower than the initial state.

The change in the water level is measured by a water level detector 61. When the water level in the water level tank 32 falls to a set value, the control valve 53 is closed to stop water injection, and the water level control valve 35 is turned off. Water is opened and water is supplied, and the water level in the water sealing tank 31 is restored.

At the time of the above-mentioned ejection of the leak gas 71, the dust entrained by the leak gas 71 is divided into a substance that reaches the water sealing tank 31 from the gap K and a substance that sinks to the bottom of the container body 11.

A part of the dust that has reached the water sealing tank 31 precipitates at the bottom of the water sealing tank to become sludge, and flows down to the sludge tank 34 during the above-mentioned water supply because the bottom surface is inclined.

If sludge accumulates in the sludge tank 34 after a long operation, the sludge valve 37 is manually opened to discharge sludge into a not-shown gutter.

On the other hand, the dust that floats on the water surface of the water sealing tank 31 is in a scum state, and is automatically discharged to the not-shown side groove together with the surface water through the scum discharge portion 39 at the time of the above overflow.

The container 2 is generally made of a wet ash 4 for one day or more.
4 so that such operations can be carried out once a day.
After performing the predetermined incineration operation once or several times, the container body 11 and the container 2 are lowered by the hydraulic cylinder 16, and then the container removal door 12 is manually opened.
The container 2 is pulled out of the container body 11 to remove dust on the bottom of the container body.

Subsequently, the container 2 is lifted by a carry-out device such as a hoist (not shown), and the wet ash 44 in the container 2 is transshipped to an ash carry-out vehicle (not shown) to complete the operation.

FIG. 5 is a longitudinal sectional view showing the structure of the movable ash humidifier according to the second aspect and the humidifying / cooling operation. Parts having the same functions as those of the movable ash humidifier according to claim 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

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

The container 2 having a vertical box-shaped side wall is
The container 2, the opening 13, and the ash chute 5 are guided and installed on a rectangular guide frame (container guide means) 17 having an inclined surface on the inner bottom surface of the container body 11.
The center of one is matched.

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

Therefore, the storage container 1 containing the container 2
Is arranged 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.

Thus, as a preparatory operation, after the storage container 1 is connected to the hydraulic cylinder 16 as described above, the hydraulic cylinder 16 is driven, and the storage container 1 is indicated by a dashed line from the floor indicated by a solid line. By pulling up to the position, the inside of the incinerator main 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 to be separated from the hydraulic cylinder 16 and then the storage container 1 is moved to a predetermined position on the guide track 11.
b, the container 2 in the storage container 1 is lifted by an unillustrated unloading device such as a hoist, and the wet ash in the container 2 is transshipped to an unillustrated ash unloading vehicle to complete the operation. .

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

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

The discharge of the incineration ash 42 has been described as an intermittent type. However, when the incineration ash 42 is continuously discharged, the cooling water injected and stored in the container 2 may be stopped.

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 of the first or second aspect of the present invention, it is possible to arrange the container in a state where the container is easily positioned in the storage container by the container guide means. By raising this storage container, the container and the ash chute can be easily brought into close contact with each other, and the inside of the storage container is sealed off from the outside air by submerging the water sealing plate in the water sealing tank. In addition, since the water injection device is provided in the ash chute, the ash humidification device is made compact, and equipment costs and civil construction costs can be reduced.

According to the movable ash humidifier of the third aspect, the water is accumulated in 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,
The ash can be humidified and cooled with a small amount of water, which not only prevents dripping of sewage from the ash unloading vehicle during transportation, but also eliminates the need for ash sewage treatment because a large amount of ash cooling water is not used. There is no risk of sludge discharge.

According to the movable ash humidifier of the fourth aspect,
By controlling the water injection nozzle based on the water level measurement by the water level detector, the water injection control is automatically performed, and the operation of the water sealing device is easy because the sludge and scum are easily discharged. Is easy.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire configuration of a movable ash humidifier according to the first embodiment.

FIG. 2 is a longitudinal sectional view showing a humidifying / cooling operation state of the movable ash humidifying device according to the first embodiment.

FIG. 3 is a plan view showing a configuration around a water sealing tank and a mud discharging tank in the movable ash humidifier according to the first embodiment.

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage container 12 Container removal 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)

(57) [Claims] 1. An ascending / descending storage container having a water sealing device provided around an open upper end, an airtight container removal door provided at a front surface, and container guide means provided at a bottom surface. A water injection device is provided above the storage container and injects water into the storage container. When the storage container rises, the water injection device is submerged in a water-sealing tank of the water-sealing device, and the inside of the storage container and outside air are cooled with water. An ash chute provided with a water seal plate to be cut off; and an ash chute provided so as to be able to enter and exit the storage container, and when the storage container is raised, an upper opening is connected to a lower end of the ash chute, and a predetermined amount of water is contained therein. A movable ash humidifier, comprising: a container capable of storing ash. 2. A storage container provided with a water seal device around the opened upper end, a container guide means disposed on the bottom surface, and capable of moving up and down and being movable in a horizontal direction at a lowered position. A water ejecting device is provided at an upper portion and injects water into the inside, and is submerged in a water-sealing tank of the water-sealing device when the storage container is lifted to shut off water from the inside of the storage container to outside air. An ash chute provided with a water seal plate, provided so as to be able to enter and exit the storage container, and when the storage container is raised, an upper surface opening is connected to the lower end of the ash chute to store a predetermined amount of water therein. A movable ash humidifier, comprising: 3. The water injection device according to claim 1, further comprising: a water injection nozzle for storing water in a container; and a water injection nozzle for mainly controlling a rise in temperature of exhaust gas generated inside the device. 3. The movable ash humidifier according to 1 or 2. 4. The water sealing device is provided with a water level detector for measuring a water level of the water sealing device, and the water injection nozzle is controlled based on the measurement of the water level by the water level detector. The movable ash humidifier according to claim 3, wherein: