JPH0953813A - Incinerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an efficient incineration of wastes with a high water content by restricting the clogging of a discharge nozzle along with a higher durability. SOLUTION: A pipeline 21 is buried into a furnace bed 4. A sideways-set blowing nozzle 30 is connected to the pipeline 21. A block body 25 having the blowing nozzle 30 covered with a refractory 25A is formed. The tip of the blowing nozzle 30 is opened on the side 26 of the block body 25. Since the blowing nozzle 30 is set sideways, this hinders clogging and the covering with the refractory 25A improves durability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for incinerating waste.

[0002]

Conventionally, a furnace chamber having a charging port at the upper part, a chimney connected to the upper part of the furnace chamber, a supply passage for supplying air into the furnace chamber, and a supply passage for the supply passage. In an incinerator equipped with a discharge nozzle provided at the tip, as shown in FIG. 6, a steel pipe B connected to an air supply path is laid in a hearth A, and a hole C drilled in this steel pipe B is provided. Air is supplied to the furnace chamber from. However, in the case of using such an exposed steel pipe B, since the steel pipe B is directly exposed to the heat of the incinerator, it tends to be oxidized and deteriorated and has a poor durability. C
Since it causes clogging, it is necessary to frequently perform maintenance, and the work of replacing the deteriorated steel pipe B is complicated.

Therefore, an object of the present invention is to provide an incinerator having excellent durability by suppressing clogging of the discharge nozzle.

[0004]

According to a first aspect of the present invention, there is provided a furnace chamber having a charging port at an upper portion thereof, a chimney connected to an upper portion of the furnace chamber, and a supply passage for supplying air into the furnace chamber. In an incinerator equipped with a discharge nozzle connected to this supply path, the discharge nozzle is laterally provided above the hearth of the furnace chamber, and the outer circumference of the discharge nozzle is covered with a refractory material. Yes, since the discharge nozzle is laterally oriented, clogging is unlikely to occur, and since it is covered with a refractory material, durability is improved.

According to a second aspect of the present invention, a block body in which the blow-out nozzle is embedded is formed from the refractory material, a tip of the blow-out nozzle is opened to a side surface of the block body, and a base end side of the blow-out nozzle is the above-mentioned. It is connected to the supply path provided in the hearth, and since the blowing nozzle is sideways,
It is less likely to cause clogging, and the ash of the waste does not fall along the side surface, and the ash of the waste does not collect on the side surface. Further, if the service life is over, it can be replaced for each block body.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 to FIG. 5 show an embodiment of the present invention. The inner surface of the outer wall 2 is made of refractory such as castable refractory or refractory cement, front, rear, left, right, upper inner wall and 3F, 3B, 3
L, 3R, 3U and the hearth 4 which is the lower inner wall are formed.
Further, two charging ports 5 are formed on the upper inner wall 3U of the furnace chamber 1 so as to communicate with the outside, and a slide type opening / closing gate 6 is provided on the charging port 5 and the charging port 5 A hopper 7 is provided on the upper part, and the opening / closing gate 6 is slid by a hydraulic cylinder 8 which is a sliding means provided outside, so that the waste H
Is charged into the furnace chamber 1 from the hopper 7. further,
A flue 9 laterally communicates with the upper portion of the right inner wall 3R, and a secondary combustion chamber 10 is provided at the tip of the flue 9 and the secondary combustion chamber is provided.
A dust collecting chamber 11 is provided below the dust collecting chamber 11, an opening / closing door 12 is provided in the dust collecting chamber 11, and an L-shaped chamber is provided above the secondary combustion chamber 10.
A type flue 13 is provided, and a chimney 14 is provided at the tip of this flue 13.
A dust collection chamber 15 is provided below the chimney 14, and the dust collection chamber 15 is
An opening / closing door 16 is provided at 15. A primary combustion burner 17 is provided at the center of the front inner wall 3F and the rear inner wall 3B is provided.
Primary combustion burners 17 are respectively provided on the left and right sides of the furnace, and these primary combustion burners 17 are provided slightly below the center of the furnace chamber 1 in the height direction. Also, the front, rear, left, and right inner walls 3F, 3
B, 3L, 3R are provided with a plurality of air supply pipes 18 vertically and horizontally in a lateral direction, and the tips of these air supply pipes 18 communicate with the inside of the furnace chamber 1 and the rear end thereof has an air supply not shown. A blower (not shown) is connected to the air supply passage. Further, the secondary combustion chamber 10 is provided with a secondary combustion burner 19 at the height position of the flue 9.

A plurality of mounting recesses 4A are formed in the width of the roadbed 4 at equal intervals in the left-right direction. The mounting recesses 4A are embedded in the lower part of the mounting recesses 4A. A plurality of branch pipes 22 are provided on the upper portion of the pipe line 21, and the upper ends of the branch pipes 22 are substantially flush with the bottom surface of the mounting recess 4A. An air supply device 23 such as a blower is connected to one end of each pipe 21 projecting from the hearth 4 to the outside, and a cap 24 is screwed into the other end to close it. A nozzle block body 25 is attached to the mounting recess 4A, and the block body 25 is made of a refractory material 25A such as castable refractory material or refractory cement.
As the distance between the 26 expands downward,
A vertical surface 26A is formed in the lower part of the
And the front and rear vertical pipes 29, 29 inside the block body 25.
Are vertically installed, and the discharge nozzles 30 and 30 are connected to the left and right of each vertical pipe 29, and the discharge nozzles 30 are connected to the upper and lower sides, respectively, and the tip of the discharge nozzle 30 is opened to the side face 26. The lower portion of the vertical pipe 29 projects downward from the lower surface 28, and the lower portion of the vertical pipe 28 is connected to the branch pipe 22. In addition, a joint 31 made of a refractory is filled in joints between the blocks 25, 25 arranged in front and rear and joints between the vertical surface 26A and the hearth 4. And the pipe 21, the branch pipe
22, the vertical pipe 29 and the discharge nozzle 30 are made of stainless steel, and thus have excellent heat resistance and corrosion resistance.

A pusher 32 for pushing out the ash of the waste H is provided between the mounting recesses 4A, 4A so as to be movable back and forth. The pusher 32 is a long object having a square cross section and is provided outside the furnace chamber 1. By the two-stage cylinder 33, which is the advancing / retreating device provided, the opening 34F of the front inner wall 3F to the opening 34 of the rear inner wall 3B.
It advances and retreats toward B, and the opening / closing lid 35 is provided in its opening 34B.
Is provided. In addition, at the retracted position of the pusher 32, the opening portion of the front inner wall 3F is formed by the tip end surface of the pusher 32.
34F is designed to be closed, and the pusher 32 is
As a result, the ash of the waste H is discarded outside through the opening 34B.

[0009] Next, the operation of the above-mentioned structure will be described. When mounting the block body 25, when the hearth 4 in which the conduit 21 is buried is completed, the block body 25 is mounted and a plurality of blocks manufactured in the factory are manufactured. Bring the block body 25 of into the furnace chamber 1,
The lower portion of the vertical pipe 29 projecting from the lower surface 28 of the block body 25 is inserted into the branch pipe 22 for connection, and the block body 25 is grounded in the recess 4A, and the joint between the front and rear adjacent block bodies 25, 25 and The joint between the vertical surface 26A and the hearth 4 is filled with a filling material 31 made of refractory material for finishing.

In use, the fire seed layer of the previously burned waste H is left in the lower part of the furnace chamber 1, and this fire seed layer is a layer lower than the nozzle block body 25,
The opening / closing gate 6 is opened from above, and the waste H is introduced into the furnace chamber 1 from the hopper 7, and, for example, the uppermost air supply pipe 18
After the waste H has been charged to the height of, the opening / closing gate 6 is operated to close the charging port 5. In addition, as the waste H, a bark having a high water content will be described as an example. Next, the primary combustion burner 17 is ignited, and the waste H is ignited. at the same time,
Air is blown out from the air supply pipe 18 and the discharge nozzle 30.
These air blowouts are continuously performed while incinerating the waste H, while the primary combustion burner 17 is an ignition burner and extinguishes when the upper portion of the waste H ignites.
The combustion of the waste H in the furnace chamber 1 is promoted by the air blown from the air supply pipe 18, and at the same time, the air blown from the discharge nozzle 30 on the hearth 4 side rises in the waste H and smokes. It flows to the road 9, and the steam of the waste H is blown off by the flow of this air. Also, the combustion raises the temperature of the hearth 4,
The air that has passed through the pipe line 21 buried in the high-temperature hearth 4 becomes high-temperature dry air and is discharged from the nozzle 30, so that the water content of the waste H can be satisfactorily removed. In this way, since the water contained in the waste H is blown off by the air blown from the discharge nozzle 30, the waste H having a high water content such as a bark can be efficiently incinerated. Further, the secondary combustion burner 19 is used to ignite to raise the temperature of the secondary combustion chamber 10 and further to treat humid smoke that starts combustion, that is, smoke that contains a large amount of non-oxide. Then, the ash and the like accumulated in the dust collecting chambers 11 and 15 are thrown out through the opening / closing doors 12 and 16.

Since the discharge nozzles 30 are provided in the upper and lower stages, the air can be evenly blown into the furnace chamber 1, and the side surface 26 of the block body 25 is formed as an inclined surface. Therefore, the ash of the waste easily falls, the ash of the waste is less likely to collect on the side surface 26, and further, since the blowout nozzle 30 is in the lateral direction, clogging is less likely to occur. Also, the blowing nozzle 30
Since the vertical pipe 29 is covered with the refractory material 25A, it is not directly exposed to heat. Then, when replacing the block body 25, the filler 31 filled in the joint is removed, and the block body 25 is replaced.
When the is lifted, the lower part of the vertical pipe 29 is detached from the branch pipe 22, and the new block body 25 can be replaced.

As described above, in this embodiment, according to the first aspect, the furnace chamber 1 provided with the charging port 5 in the upper portion, the chimney 14 connected to the upper portion of the furnace chamber 1, and the inside of the furnace chamber 1 In an incinerator having a pipe line 21 serving as a supply line for supplying air to the pipe, and a discharge nozzle 30 connected to the pipe line 21, the discharge nozzle 30 is provided horizontally above the hearth 4 of the furnace chamber 1. , This discharge nozzle 30
The outer periphery of the nozzle is covered with the refractory 25A, and since the discharge nozzle 30 is in the horizontal direction, clogging is less likely to occur, and since it is covered with the refractory 25A, the blowing nozzle is
30 is less susceptible to mechanical shock and heat from the outside, and can improve durability. Then, the air blown out from the discharge nozzle 30 on the side of the hearth 4 flows to the chimney 14 so that the water vapor of the waste H can be removed. Therefore, the high-moisture content waste of bark, wet wood, etc. It is possible to incinerate a large amount of materials efficiently in a short time.

As described above, in this embodiment, the second aspect
Corresponding to the above, the block body 25 in which the blow-out nozzle 30 is embedded is formed from the refractory 25A, the tip of the blow-out nozzle 30 is opened to the side surface 26 of the block body 25, and the base end side of the blow-out nozzle 30 is located in the hearth The ash of the waste H does not drop along the side surface 26 and the ash of the waste H does not collect on the side surface 26, and thus the ash of the waste H is opened to the side surface 26. The nozzle 30 is less likely to be clogged, and if the service life has expired, the block body 25 can be replaced for each block body 25.

Further, as an effect of the embodiment, since the pipe line 21 is embedded in the hearth 4, the heat of the hearth 4 can blow the dry air at a high temperature from the blowing nozzle 30. Furthermore, since the side surfaces 26, 26 are formed obliquely, the block body 25
The ash of the waste H above easily falls. Furthermore, since the blowout nozzles 30 are provided in the block body 25 in multiple stages, air can be evenly blown into the furnace chamber 1. Also, the hearth 4
The vertical pipe 29 is connected to the branch pipe 22 by grounding the block body 28 because the lower end of the vertical pipe 29 is projected from the lower surface 28 of the block body 25 while the upper end of the branch pipe 22 is faced to the upper surface of the branch pipe 22. can do. In addition, the recess 4 for mounting in the hearth 4
Since A is formed and the vertical surfaces 26A are provided on both sides of the lower portion of the block body 25, the block body 25 can be stably attached by fitting the block body 25 into the recess 4A.
Furthermore, since the block bodies 25 are provided at equal intervals over the entire length in the width direction, and the pushers 32 move back and forth between the left and right block bodies 25, 25, the block bodies 25 do not interfere with the operation of the pushers 32. In addition, since the ash falls between the block bodies 25, 25, the ash collected at the operating position of the pusher 32 can be satisfactorily transferred to the outside, and the pusher 32 has the width of the furnace chamber 1. Since it operates in the direction, the distance to go back and forth is short. Also, in the incinerator of the present invention, the waste H is generated by the air blown from the discharge nozzle 30.
Since the water contained in is removed for incineration, waste H having a high water content such as tree bark can be efficiently incinerated, which is useful as an incinerator for high water content waste.

The embodiments of the present invention are not limited to those described above, and various modifications can be made within the scope of the gist of the present invention. For example, in the embodiment, five block bodies are arranged in one row, but the block body 25
The front and rear width of can be appropriately selected. Further, in the embodiment, the blowing nozzle 30 is provided in two stages, but it may be provided in one stage or three or more stages.

[0016]

According to the first aspect of the present invention, the discharge nozzle is provided laterally above the hearth of the furnace chamber, and the outer circumference of the discharge nozzle is covered with a refractory material. It is possible to provide an incinerator that suppresses clogging, has excellent durability, and can efficiently incinerate high water content waste.

According to a second aspect of the present invention, a block body in which the blow-out nozzle is embedded is formed of the refractory material, the tip of the blow-out nozzle is opened to the side surface of the block body, and the base end side of the blow-out nozzle is the above-mentioned. It is connected to the supply path provided in the hearth to suppress clogging of the discharge nozzle,
It is possible to provide an incinerator having excellent durability, capable of efficiently incinerating high-moisture content waste, and also capable of exchanging each block body so that nozzle replacement work is easy.

[Brief description of drawings]

FIG. 1 is a sectional view of a block body showing an embodiment of the present invention.

FIG. 2 is a sectional view of a furnace chamber showing an embodiment of the present invention.

FIG. 3 is a sectional view of a furnace chamber showing an embodiment of the present invention.

FIG. 4 is an overall sectional view showing an embodiment of the present invention.

FIG. 5 is an overall sectional view showing an embodiment of the present invention.

FIG. 6 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Furnace chamber 4 Furnace 5 Inlet 14 Chimney 21 Pipe line (supply furnace) 25 Block for nozzle 25A Refractory 26 Side 30 Discharge nozzle

Claims (2)

[Claims] 1. A furnace chamber having a charging port in the upper portion, a chimney connected to the upper portion of the furnace chamber, a supply passage for supplying air into the furnace chamber, and a discharge nozzle connected to the supply passage. In the incinerator, the discharge nozzle is laterally provided above the hearth of the furnace chamber, and the outer circumference of the discharge nozzle is covered with a refractory material. 2. A block body in which the blow-out nozzle is embedded is formed from the refractory material, a tip end of the blow-out nozzle is opened to a side surface of the block body, and a base end side of the blow-out nozzle is provided in the hearth. The incinerator according to claim 1, wherein the incinerator is connected to the supply path.