JP3016240B2 - Dust removal device for incinerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust remover for an incinerator.

[0002]

2. Description of the Related Art Conventionally, an incineration chamber surrounded by a furnace wall, a cyclone type dust remover connected to the incineration chamber via a smoke exhaust pipe, and a soot containing a large amount of soot selected by the cyclone type dust remover. Incinerators with multi-cyclones for treating wind are known.

[0003]

The above-mentioned known cyclone type dust remover has a low dust removal efficiency at one time, and therefore cannot meet a predetermined environmental standard unless dust removal work is performed several times. .

[0004]

Therefore, the present invention relates to an incineration chamber comprising a cyclone type dust removing apparatus 6 connected to the incineration chamber 14 via a flue gas pipe 5,
A gas swirling blade 4 that guides and swirls the rising combustion exhaust gas is provided below the vertical cylinder 30 of the cyclone type dust removing device 6.
3 is fixed, and on the inner peripheral surface 38 of the vertical cylinder 30 at a position above the gas swirling vanes 43, a dust removing flap 32 is provided along the inner peripheral surface 38 to remove the soot A that is swirled and accumulated. On the inner peripheral surface 38 of the vertical cylinder 30 where the dust removing device and the dust removing flap 32 are provided, multiple spiral wings 37 for guiding the soot A are formed, and the dust removing flap 32 is provided with the spiral wings 37. A dust removing device of an incinerator formed to have a width corresponding to the number of strips, and a dust removing device of an incinerator provided with another dust removing flap 33 above the dust removing flap 32, and
A blower 8 that can supply a swirling wind into the vertical cylinder 30 between the upper and lower dust removing flaps 32 and 33.
Device for an incinerator to which a blower pipe 42 from the air is connected, and the dust removing flap 32 and the dust removing flap 33
Is connected to a multi-cyclone 7, and the air after dust removal discharged from the multi-cyclone 7 is sucked by a blower 8,
The wind sucked by the blower 8 is increased in flow velocity through a blower flap 41 provided on the vertical cylinder 30 and then returned to the vertical cylinder 30 to form a dust removal device for an incinerator.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
1 is a municipal waste incinerator, 2 is a blast tube to the incinerator 1
, A secondary combustion chamber connected to the incinerator 1 via a smoke exhaust pipe 5, 6 a cyclone type dust remover, and 7 a cyclone type dust remover 6. Multi-cyclones 8 are blowers that are sucked from the multi-cyclones 7 and returned to the cyclone-type dust removing device 6.

FIG. 2 is a sectional view of the incinerator 1 taken along the line XX, and FIG. 3 is a sectional view of the incinerator 1 taken along the line YY.
Is the outermost peripheral wall 9 and the double-walled furnace wall 1 inside thereof.
The space 9 is formed in the air passage chamber 11 with a space between the peripheral wall 9 and the furnace wall 10. The air passage chambers 11 are formed on the periphery and the bottom except for the ceiling of the incinerator 1, are divided into a plurality of upper and lower parts by a plurality of horizontal partition plates 12, and each of the upper and lower divided air passage chambers 11 is provided with a respective one. The blower tube 3 of the independent blower 2 is connected. Each of the air ducts 3 is provided with an air flow control valve 13 that can independently control the air flow.
It is configured so that the air can be sent as desired.

The interior surrounded by the furnace wall 10 becomes an incineration chamber 14, and the combustion air in the air path chamber 11 is introduced into the incineration chamber 14 through a number of blowing nozzles 15 penetrating the furnace wall 10. Supply. Therefore, when the air supply amount to each of the air passage chambers 11 vertically divided by the plurality of horizontal partition plates 12 is adjusted by the air flow control valve 13, a necessary amount of air can be supplied to a necessary portion of the incineration chamber 14. Can be. The air volume control valve 13 is adjusted manually by looking at the inside of a hole formed in the wall of the incineration chamber 14 and visually checking the height of the input waste. A known sensor may be provided so that the height of the input waste can be automatically adjusted by knowing the height.

Reference numeral 16 denotes an inner wall of the furnace wall 10 having a double wall structure;
Is an outer wall of the furnace wall 10 having a double wall structure, and a gap is formed between the inner wall 16 and the outer wall 17 so that cooling water 18 can be injected. The gap has substantially the same width at the periphery and at the bottom, but the ceiling has a large tank shape and forms a steam discharge port 19 at the upper center of the tank. The blower nozzles 15 are provided innumerably at predetermined intervals in the vertical and horizontal directions, and each of them is welded to the inner wall 16 and the outer wall 17, so that they also serve as strength members.

The bottom wall 20 of the incineration chamber 14 may be formed horizontally, but in the state of FIG. There is formed a pool portion 21 for storing the collected resins. 22 is the reservoir 21
This is an auxiliary burner that burns the resins stored in the furnace. 2
Reference numeral 3 denotes a refractory layer made of a brick-like material provided in the reservoir 21. Numeral 24 denotes an inlet for waste for incineration, which is provided on the near side in FIG. As shown in FIG. 2, the incineration waste input port 24 has a large opening so that the small transport vehicle T can input garbage, and the incinerator is extremely large as can be seen in comparison with the transport vehicle T.

Reference numeral 25 denotes an opening / closing door of the input port 24, which is a large-sized opening / closing door and automatically opens and closes. 26 is the incineration chamber 14
And a communication port 27 extending from the incineration chamber 14 to the secondary combustion chamber 4.
The ash outlet 28 is an automatic opening / closing door provided at the ash outlet 27. In addition, the airway room 1 divided up and down
1, a blowing nozzle 15 provided in the lowermost air passage chamber 11
Is vertical, the ash falls through the blowing nozzle 15 and accumulates in the lowermost air passage chamber 11. However, the present invention is designed so that an operator can enter and remove the ash inside.
It is formed at a workable ceiling height. 29 is an entrance to the lowermost air passage chamber 11, and K is a staircase.

FIG. 4 shows a cross section of a main part of the cyclone type dust removing device 6. A vertical cylinder 31 having a small diameter and a conical top is attached to the center of the inside of the lower part of the vertical cylinder 30. Gas swirling blades 43 are fixed between the inner peripheral surfaces 38 of the vertical cylinder 31 and the vertical cylinder 30. On the peripheral wall of the vertical cylinder 30 at a desired upper position of the vertical cylinder 31, two dust removing flaps 32 and 33 are provided at intervals vertically. The dust removal flap 3
Reference numerals 2 and 33 denote a part of the soot A, which accumulates and rises from below the vertical cylinder 30 along the inner peripheral surface 38 and is taken out of the vertical cylinder 30 by peeling the skin of the tree.
As shown in FIG. 5, the inner surface sides 34 of the second and the third 33 are formed to have substantially the same arc surface as the inner peripheral surface 38 of the vertical cylinder 30. The dust removing flaps 32, 33 are axially fixed on the base side by vertical rotating shafts 35, 36, and the front side is a vertical cylinder 30 according to the thickness of the soot A.
And can be adjusted in the direction of the arrow a so that it can freely enter and exit in the radial direction. Although this angle adjustment may be performed manually, a structure is adopted in which motors (not shown) are attached to the rotating shafts 35 and 36 to perform automatic adjustment.

A spiral blade 37 is mounted on the inner peripheral surface 38 of the vertical cylinder 30. The spiral wing 37 is provided at the position where the dust removing flaps 32 and 33 are provided in the embodiment,
It may be formed entirely. The spiral wing 37 is preferably formed as a double spiral of about four. In the case of a four-row spiral, the dust removal flaps 32 and 33 need to be formed to a height (width) of four rows so that the soot A accumulated between all the strips can be taken out without leakage. Although not shown, a spiral blade similar to the spiral blade 37 may be formed on the inner surface 34 of the dust removing flaps 32 and 33.

As shown in FIG. 1, of the dust removal flaps 32 and 33, the soot A taken out by the lower dust removal flap 32 is removed.
Is supplied to the multi-cyclone 7 through the connection pipe 39 and is taken out by the dust removing flap 33 at the upper stage.
Is supplied to the multi-cyclone 7 via a connecting pipe 40.

The dust removing flaps 32, 3 above and below the vertical cylinder 30
A ventilation flap 41 is provided between the upper and lower sides of 3. The blower flap 41 is connected to a blower tube 42 from the blower 8, and effectively uses the wind force of the blower 8 to reduce the length of the vertical cylinder 30.
A strong swirling wind is formed inside. A well-known ejector (not shown) is provided at an upper position of the vertical cylinder 30.

[0015]

Next, the operation will be described. (Operation of the Incineration Chamber 14) The present invention is configured as described above. The open / close door 25 is automatically opened, and the general waste is injected into the incineration chamber 14 from the input port 24 by the transport vehicle T. After putting garbage,
When it is ignited by the auxiliary burner 22 or other desired means and is blown from the blower 2 through the blower tube 3, the incinerator 14
Except for the inside ceiling, the other parts are provided with countless blowing nozzles 15 vertically and horizontally, so that the blowing is complete and burns well, and between the furnace wall 10 of the double structure of the incineration chamber 14, Since the cooling water 18 is injected, no excessive heating is performed.

As the combustion proceeds, the ash gradually accumulates in the incineration chamber 14 and the subsequent waste is thrown in one after another. As described above, the upper and lower partitions are divided by the plurality of horizontal partition plates 12, and the air volume (air pressure) to each of the air passage chambers 11 can be appropriately adjusted by the air volume adjusting valve 13. Even if 15 is clogged by deposits, sufficient air required for combustion can be blown to the required location against this, and good combustion can be achieved.

(Operation of the vertical cylinder 30) The combustion exhaust gas flows from the communication port 26 to the secondary combustion chamber 4 through the smoke exhaust pipe 5.
After being subjected to secondary combustion, it is sent into the vertical cylinder 30 of the cyclone type dust remover 6. The exhaust gas that has flowed into the vertical cylinder 30 is supplied to a well-known ejector provided above the vertical cylinder 30,
In addition to the swirling action by the gas swirling vanes 43 provided at the lower part of the vertical cylinder 30, the air blown at a high flow rate from the blower 8 via the blower flap 41 and swirled powerfully to increase the specific gravity. Soot A is the inner peripheral surface 3 of the vertical cylinder 30
The soot A that turns and accumulates along 8 and is guided by the multiple (four in this embodiment) spiral wing 37 to ascend.

The smoke A guided to the spiral wing 37 is moved by the lower dust removing flap 32 provided on the vertical cylinder 30.
The tree is removed so as to peel the thin bark, and sent to the multi-cyclone 7 via the connecting pipe 39. When the number of the spiral wings 37 is four, the vertical height of the dust removing flap 32 is set to a height corresponding to the width of the four blades. The spiral wing 37 is provided on the inner peripheral surface 38.
Is formed, the soot A swirled and accumulated along the inner peripheral surface 38 is always subjected to the dust removing action by the dust removing flap, and does not jump over the dust removing flap. In other words, due to the centrifugal force of the swirling wind, the heavy soot A having a specific gravity accumulates on the inner peripheral surface 38 of the vertical cylinder 30, and the accumulated soot A always enters between any of the spiral blades 37. Then, the dust is removed by the dust removing flap 32. Therefore, only a part of the soot A that cannot be separated by the specific gravity due to the centrifugal force passes upward without being affected by the dust removing flap 32.

The processing air processed by the multicyclone 7 is circulated by the blowing device 8 through the blowing pipe 42 to the blowing flap 41, and the flow velocity is increased by the flap 41 and returned to the vertical cylinder 30. It is. The soot A that could not be removed by the lower dust removing flap 32 is again subjected to specific gravity sorting by the swirling wind, and is similarly treated by the upper dust removing flap 33.

[0020]

As described above, the present invention provides an incinerator 14
And a cyclone-type dust remover 6 connected to the incineration chamber 14 via a flue gas pipe 5. In the lower part of the vertical cylinder 30 of the cyclone-type dust remover 6, the ascending combustion exhaust gas is guided. The gas swirling vanes 43 to be swirled are fixed, and the dust removing flap for shaving the soot A that is swirled and accumulated along the inner circumferential surface 38 on the inner peripheral surface 38 of the vertical cylinder 30 located above the gas swirling blades 43. 32, the heavy dust A having a specific gravity turns and accumulates along the inner peripheral surface 38 of the vertical cylinder 30, and the accumulated dust A is accumulated in the vertical cylinder 3.
The dust removing flaps 32 provided at the zeros remove the thin bark of the tree efficiently. A plurality of spiral wings 37 for guiding the soot A are formed on the inner peripheral surface 38 of the vertical cylinder 30 where the dust removing flap 32 is provided. In addition to the above-described effects, in addition to the above-described effects, the dust A is swirled and accumulated along the inner peripheral surface 38, and the soot A is guided by the multiple spiral blades 37 to the vertical cylinder 30. It is surely sent to the provided dust removing flap 32 and is removed so as to peel the thin bark of the tree, so that the soot A is not left. Further, since the dust removing device of the incinerator is provided with another dust removing flap 33 above the dust removing flap 32, a further dust removing effect can be expected. Further, a dust removal device for an incinerator in which a blower pipe 42 from a blower 8 capable of supplying a swirling wind into the vertical cylinder 30 is connected between the upper and lower dust removal flaps 32 and 33 is provided. A strong turning force can be applied again to the exhaust gas passing through the flap 32. Further, the dust removing flap 32 and the dust removing flap 33
Is connected to a multi-cyclone 7, and the air after dust removal discharged from the multi-cyclone 7 is sucked by a blower 8,
The wind sucked by the blower 8 is increased in flow velocity through a blower flap 41 provided on the vertical cylinder 30 and then returned to the vertical cylinder 30 to be connected to the multi-cyclone 7 because of the dust removal device. The power of the blower 8 can be used effectively.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram.

FIG. 2 is a sectional view taken along line XX of the incinerator.

FIG. 3 is a sectional view taken along the line YY of the incinerator.

FIG. 4 is a longitudinal sectional view of a cylinder.

FIG. 5 is a transverse sectional view of a cylinder showing a dust removing flap.

FIG. 6 is a cross-sectional view of a cylinder showing a blower flap.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Incinerator, 2 ... Blower, 3 ... Blower tube, 4 ... Secondary combustion chamber, 5 ... Smoke tube, 6 ... Cyclone type dust remover, 7 ... Multi cyclone, 8 ... Blower, 9 ... Peripheral wall, 10 ... furnace wall, 11 ... airway room, 12 ... partition plate, 13 ... air volume control valve,
14 ... incinerator, 15 ... blowing nozzle, 16 ... inner wall, 17 ...
Outer wall, 18 ... cooling water, 19 ... steam outlet, 20 ... bottom wall,
21: pool part, 22: auxiliary burner, 23: refractory layer, 2
4 ... Inlet, 25 ... Opening / closing door, 26 ... Communication port, 27 ... Smoke outlet, 28 ... Opening / closing door, 29 ... Entrance, 30 ... Cylinder, 3
1 ... vertical axis rotating fan, 32, 33 ... dust removing flap, 34
... inner surface, 35, 36 ... rotating shaft, 37 ... spiral blade, 38 ... inner peripheral surface, 39, 40 ... connecting pipe, 41 ... blowing flap, 42
... air blow tube, 43 ... gas swirl vane.

Continuation of the front page (56) References JP-U 4-106646 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23J 3/04 B04C 9/00 F23J 3/00

Claims (5)

(57) [Claims] An incinerator and a flue gas pipe in the incinerator.
And a cyclone-type dust remover 6 connected through a gas turbine. A gas swirling blade 43 for guiding and swirling the ascending combustion exhaust gas is fixed to a lower portion of the vertical cylinder 30 of the cyclone-type dust remover 6. , The gas swirling blade 43
The inner peripheral surface 38 of the vertical cylinder 30 at a position above the inner peripheral surface 38
Dust flap 3 that removes the soot A that turns and accumulates along the path
2. A dust removal device for an incinerator provided with 2. 2. The dust removing flap 3 according to claim 1,
On the inner peripheral surface 38 of the vertical cylinder 30 in the portion provided with 2, spiral wings 37 for guiding the smoke A are formed, and the dust removing flap 32 has a width corresponding to the number of spiral wings 37. Dust removal device for the formed incinerator. 3. The dust removing flap 3 according to claim 2, wherein
2. A dust removing device for an incinerator provided with another dust removing flap 33 at an upper position of 2. 4. The incinerator according to claim 3, wherein a blowing pipe 42 from a blowing device 8 capable of supplying a swirling wind into the vertical cylinder 30 is connected between the upper and lower dust removing flaps 32 and 33. Dust removal device. 5. The dust removing flap according to claim 3, wherein
2 and the dust removing flap 33 are provided with a multi-cyclone 7
The wind after dust removal discharged from the multicyclone 7 is sucked by the blower 8, and the wind sucked by the blower 8 is increased in flow velocity through the blower flap 41 provided on the vertical cylinder 30, An incinerator dust remover configured to return to the vertical cylinder 30.