JPH0727318A - Ash processing device - Google Patents

Abstract

PURPOSE:To melt ash completely even if it contains components of high specific gravity. CONSTITUTION:An ash processing device is comprised of a cylinder part 1 for receiving ash from an upper opening 1a and dropping ash of melted ash 4a through a lower opening 1b; a burner 2 for heating from outside a side wall 1c part of the cylinder part 1; and a cooling part 5 for cooling the melted ash 4a. The side wall 1c part of the cylinder 1 is provided with a plurality of holes 7 for use in directly feeding a part of the heat of the burner 2 into the cylinder 2. An inside part of the cylinder 1 is heated by heat of the burner 2 passed through the holes 7 and heat passed through the side wall 1c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical portion for receiving ash from an upper opening and dropping molten ash from a lower opening, and a bar for heating a side wall portion of the cylindrical portion from the outside. The present invention relates to an ash processing device having a fuser and a cooling unit that cools molten ash.

[0002]

2. Description of the Related Art Generally, there is an ash treatment method in which ash produced when incinerating garbage in a home or a factory is melted and then thrown into water or the like to be cooled so as to be gravel and recovered. It has been done conventionally. This recovered material is used as an aggregate or the like in building materials, and it is important to improve the recovery efficiency.

As an apparatus for performing this ash treatment, ash is put into a combustion chamber formed of ceramic refractory bricks or the like, and a burner using heavy oil, propane gas or the like as a fuel is directly blown to the ash to ash the ash. Is melted and then taken out of the combustion chamber and cooled.

However, such an ash processing apparatus is
Since the heat of the burner is directly blown to the ash, the ash melts quickly in the areas where the burner heat hits, but the melting slows down in other areas, and as a whole, the ash is completely melted. It took time and the work efficiency was poor.

[0005] Conventionally, as an apparatus for easily melting ash, there is one disclosed in Japanese Patent Application No. 5-85414, "Ash treatment apparatus", which is used to swirl combustion air in a cylindrical combustion chamber. The ash put into this is forcibly swirled, the ash retained by this swirling is melted by the heat of the burner that is swirling in the same way, and then the molten ash is dropped from the combustion chamber to cool the cooling section. It is designed to be cooled in.

[0006]

As described above, Japanese Patent Application No.
-85414 "Ash treatment device" requires swirling of particulate ash with the combustion air swirling at high speed in the combustion chamber. In addition to particles having a low specific gravity, such as toner ash, plastic ash, wood chips, and garbage, it also contains heavy particles such as coke, activated carbon, and cement ash.

When the ash has a low specific gravity, the ash is swirled in the combustion chamber along with the swirling combustion air, and the ash retention time is secured in the combustion chamber.
Since the ash is completely melted, which is the intended effect, because it receives sufficient heat from the burner, if the specific gravity is heavy, the combustion air that swirls even when put into the combustion chamber It is less susceptible to the effect of, and may fall out of the combustion chamber without turning.

Therefore, most of the ash having a large specific gravity cannot retain the residence time in the combustion chamber and cannot receive sufficient heat, so that it falls from the combustion chamber without being completely melted and is cooled in the cooling section. There is a problem in that the product is cooled and collected without being able to be used as an aggregate or the like, leading to a decrease in the recovery rate.

Therefore, in the present invention, by heating the inside of the cylindrical portion (combustion chamber) to a high temperature, even if the ash charged into the cylindrical portion contains heavy ash, the ash is melted. An object of the present invention is to provide an ash processing apparatus that can be surely performed to improve the collection rate of aggregates and the like.

[0010]

The ash processing apparatus of the present invention comprises:
Basically, it is as shown in FIG. That is, above the upper opening 1a of the tubular portion 1, the charging device 3 containing the ash 4 is provided, and the lower opening 1b of the tubular portion 1 is provided.
A cooling unit 5 in which water 6 is placed is installed below. The side wall 1c of the tubular portion 1 is provided with a plurality of holes 7, and the burner 2 is provided outside the side wall 1c.
Is installed.

When the burner 2 is operated, the heat of the burner 2 strikes the side wall 1c of the cylindrical portion 1 and the side wall 1c.
Along with heating, part of the heat directly enters the tubular portion 1 through the plurality of holes 7. As a result, the inside of the tubular portion 1 is heated by the heat of the side wall 1c heated by the burner 2 and the heat of the burner 2 that has passed through the hole portion 7 (dotted line arrow in FIG. 1). Is uniformly in a high temperature state.

Then, in this state, when the charging device 3 is operated to feed the ash 4 into the tubular portion 1 through the upper opening 1a,
Since the inside of the tubular portion 1 is uniformly in a high temperature state,
Regardless of whether the ash 4 passes near the center of the tubular portion 1 or near the side wall 1c, each of the ash 4 receives high heat and becomes a melt 4a, which moves downward, and then moves to the lower opening 1b.
Falls into the water 6 of the cooling unit 5 and is rapidly cooled in the water 6 to form the gravel 8.

By performing such a series of operations, when the ash 4 is continuously charged from the charging device 3, the ash 4 is continuously melted and a large amount of the gravel material 8 is obtained. It is possible to collect.

[0014]

As described above, the inside of the tubular portion 1 is affected by both the heat indirectly received from the side wall 1c heated by the burner 2 and the heat of the burner 2 directly entering through the hole 7. Further, the temperature of the burner 2 can be raised, and the heat of the burner 2 is evenly supplied into the tubular portion 1 through the two paths, so that the temperature difference in the tubular portion 1 is kept small. The injected ash 4 can sufficiently receive this heat in the tubular portion 1.

The ash 4 charged into the tubular portion 1 through the upper opening 1a moves downward in the tubular portion 1 due to free fall and receives heat from the burner 2 during this period to melt 4a. Then, after that, it is dropped from the lower opening 1b, is sent to the cooling unit 5, and is cooled to be solidified to form the gravel-like material 8 in that order.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. In the figure, 1-2, 3-8 are the same as those shown in FIG. 1, 2a is a burner, 9 is an outer wall, 9a is an inclined part, 10 is an outer plate, 10a is a discharge port, 11 is a cooling liquid. , 12 is a screw, 13 is a motor, 14 is a connecting pipe, 14a is an inlet, 14b
Is an outlet, 15 is a damper, 16 is a communication passage, 17 is a conveyor, 18
Is a dishwasher and 19 is a filter.

Here, the outer wall 9 made of ceramic or the like
The tubular portion 1 is attached to the upper part of the, and an inclined portion 9a is provided below the tubular portion 1 so as to project inward from the outer wall 9. An outer plate 10 is installed so as to surround the outer wall 9, and a cooling liquid 11 is put between the outer wall 9 and the outer plate 10. The cooling liquid 11 is appropriately discharged from the discharge port 10a, and circulates between the outer wall 9 and the outer plate 10 so that the outer wall 9 is cooled.
I'm trying to cool.

Then, in the upper opening 1a of the tubular portion 1,
A throwing device 3 storing the ash 4 is attached, and the throwing device 3 includes a screw 12 driven by a motor 13 inside, and the ash 4 stored by the rotation of the screw 12 is inserted into the tubular portion 1. I am sending it to. The supply amount of the ash 4 can be adjusted by increasing or decreasing the rotation speed of the screw 12.

As for the ash 4 stored in the charging device 3, various kinds of ash after incineration are passed through a magnetic separator or the like to remove metal,
It is made into a fine powder with a crusher, etc.
This is because the ash 4 is made into a fine powder to improve the melting efficiency. Further, the charging device 3 is not limited to the one shown in the figure, and various other devices may be used as long as the ash 4 can be charged into the tubular portion 1 in a predetermined amount.

The outer wall 9 has a side wall 1c of the tubular portion 1.
A plurality of burners 2 facing each other and a burner 2a separated from the tubular portion 1 are provided. The heat of the burner 2 is divided into that which heats the side wall 1c of the cylindrical portion 1 and heats this side wall 1c and that which is directly introduced into the cylindrical portion 1 through the hole 7 of the cylindrical portion 1. To be The burner 2a
Are used to heat the entire inside of the outer wall 9.

Further, the positions and the numbers of the burners 2 and 2a, and the positions and the numbers of the holes 7 provided in the side wall 1c are not limited to those shown in the drawing, but may be arbitrary. it can. The burners 2 and 2a use heavy oil, propane gas or the like as fuel, and are burned by the fuel and air sent from the fuel pump and the compressor. However, as long as they generate a predetermined amount of heat. It is not limited to this.

The heat quantity of the burners 2 and 2a is set by adjusting the fuel supply quantity and the air supply quantity by the respective valves. At this time, a temperature sensor is attached to each of the substantially middle portion of the cylindrical portion 1, the lower opening 1b, and the inside of the outer wall 9, and the fuel supply amount and the air supply amount are automatically adjusted through an inverter or the like. It may be controlled.

Next, a space portion partitioned into an upper portion and a lower portion by the inclined portion 9a in the outer wall 9 is made to communicate with the outside of the outer wall 9 by a connecting pipe 14. That is, the connection pipe 14 is used to communicate between the inlet portion 14a provided in the space below the inclined portion 9a and the outlet portion 14b provided in the space above the inclined portion 9a. A damper 15 for adjusting the flow rate is provided at a substantially middle portion of the connecting pipe 14.

Inside the outer wall 9, a cooling section 5 is provided below the end of the inclined section 9a. In the cooling section 5, a conveyor 17 puts a part of the cooling water into the water 6. It is provided in the state. As shown in FIG. 3, the conveyor 17 has a horizontal portion that continues from the cooling unit 5 and an upwardly inclined portion that is separated from the outer wall 9.

Further, a communication passage 16 is provided in the lower portion of the outer wall 9, and the lower inner portion of the outer wall 9 and the dish washer 18 are communicated with each other through the communication passage 16. The scrubber 18 has a function of removing nitrogen oxides such as NO ₂ , and a filter 19 for removing dust and the like mixed in the passing flow.
Is equipped with.

Next, the operating state of the ash processing apparatus will be described. First, the burners 2 and 2a are ignited to sufficiently heat the inside of the tubular portion 1. These burners 2 and 2a heat the inside of the cylindrical portion 1 to about 1500 ° C, and the inclined portion 9a is in the vicinity of 1300 ° C, and the upper portion of the cooling portion 5 is in the condition of about 1700 ° C. Has become.

In the case where the temperature sensor, the inverter and the like described above are provided, when the temperature of each part is not a predetermined temperature, the inverter is operated based on the output signal of the temperature sensor to supply fuel and air. Burners 2 and 2 are used to increase or decrease the amount so that each temperature becomes an appropriate value.
The heat quantity of a is adjusted.

Next, after the tubular portion 1 is maintained at a predetermined temperature, the charging device 3 is operated, that is, the motor 13 is driven to rotate the screw 12, and the fine powdery ash 4 is fed to the upper opening 1a. When put into the tubular part 1 from the
Receives a sufficient amount of heat while falling from the lower opening 1b to become a melt 4a and falls onto the inclined portion 9a.

At this time, since the inside of the tubular portion 1 is maintained at a uniform predetermined temperature, the ash 4 may fall either near the center of the tubular portion 1 or near the side wall 1c. Even when the ash 4 to be charged is mixed with a heavy specific gravity, all of the melted material 4a is heated by the heat of the burner 2 until it falls from the lower opening 1b. I am trying to become.

Then, the melt 4a on the inclined portion 9a flows out along the inclination of the inclined portion 9a and falls into the water 6 of the cooling portion 5 from the end portion of the inclined portion 9a as shown in FIG. By doing so, it is cooled rapidly and becomes gravel 8
Accumulated on 17. After that, as shown in FIG. 3, by operating the conveyor 17, the gravel 8 is moved in the horizontal direction and then lifted up to be taken out from the water 6 of the cooling unit 5 so that it can be collected. .

It should be noted that the inclined portion 9 is formed along with the flow of the melt 4a.
As shown by the solid arrow in FIG. 2, the hot air that has moved to the lower side of a enters the connecting pipe 14 from the inlet portion 14a, passes through the damper 15 and exits from the outlet portion 14b, and is sent to the vicinity of the tubular portion 1. As a result, it is used to heat the tubular portion 1 again. The amount of hot air passing through the connecting pipe 14 is adjusted by the damper 15.

Further, a large amount of water vapor generated when the melt 4a falls into the water 6 and is rapidly cooled is washed through the communication passage 16 as shown by the dotted arrows in FIGS. Machine
Introduced in 18. Then, this water vapor is discharged to the outside after nitrogen oxides such as NO ₂ are removed in the scrubber 18 and dust and the like mixed in are removed by the filter 19. Further, the steam may be passed through various cooling devices or the like.

[0033]

According to the present invention, a plurality of holes are provided in the side wall of the tubular portion so that a part of the heat of the burner is directly introduced into the tubular portion so that the ash is put into the tubular portion. Since it is designed to raise the temperature, it is possible to receive sufficient heat from the burner when the injected ash falls either near the center of the tubular part or near the side wall, and the ash melts. Can be ensured, and work efficiency can be improved.

Furthermore, since the ash charged in the high-temperature cylindrical portion is naturally dropped and sufficiently heated during this period, the ash is swirled as in the conventional case to secure the retention time. It is not necessary to do so, and even if the specific gravity of ash is heavy, it is possible to receive sufficient heat while falling,
It can be completely melted regardless of the specific gravity of the added ash, and the collection rate of aggregates and the like can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating the basic configuration of an ash processing apparatus of the present invention.

FIG. 2 is a cross-sectional view illustrating an embodiment of the ash processing apparatus of the present invention.

FIG. 3 is a side view of the ash processing apparatus shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylindrical part 1a ... Upper opening 1b ... Lower opening 1c ... Wall 2,2a ... Burner 3 ... Injection device 4 ... Ash 4a・ ・ ・ Cooling part 6 ・ ・ ・ Water 7 ・ ・ ・ Hole 8 ・ ・ ・ Gravel-like material 9 ・ ・ ・ Outer wall 9a ・ ・ Inclined part 10 ・ ・ ・ Outer plate 10a ・ ・ Discharge port 11 ・ ・ ・ Cooling liquid 12 ・ ・ ・ Screw 13 ・ ・ ・ Motor 14 ・ ・ ・ Connection pipe 14a ・ ・ Inlet part 14b ・ ・ Outlet part 15 ・ ・ ・ Damper 16 ・ ・ ・ Communication passage 17 ・ ・ ・ Conveyor 18 ・ ・ ・ Scouring machine 19 ···filter

Claims (1)

[Claims] 1. A tubular portion for receiving ash from the upper opening and dropping molten ash from the lower opening, a burner for heating a side wall portion of the tubular portion from the outside, and the molten state. An ash processing device having a cooling unit for cooling the ash of the ash, wherein a plurality of holes for directly introducing a part of the heat of the burner into the tubular portion is provided on a side wall portion of the tubular portion. An ash processing apparatus, wherein a portion is provided, and the inside of the cylindrical portion is heated by the heat of the burner that has passed through the hole and the heat that has passed through the side wall portion.