JP3814006B2 - Combustion device - Google Patents

Description

[0001]
The present invention relates to a combustion apparatus, and more particularly, to a combustion apparatus that can efficiently dry water-containing waste in a drying chamber using a part of combustion gas.
[0002]
[Prior art]
The present inventor disclosed in Japanese Patent Application Laid-Open No. 7-243627 a water-containing incineration system that evaporates water-containing waste containing a large amount of water and burns combustible components.
[0003]
In this publication, before putting the water-containing waste into the incinerator, the water-containing waste placed on the drying table in the drying chamber is dried using a part of the combustion gas exhausted in the incinerator. However, since the gas used for drying has an odor, it is returned to the incinerator and burned again to remove the odor.
[0004]
[Problems to be solved by the invention]
The drying table passes the combustion gas through a pipe provided in a serpentine shape below, warms the drying table, and heats the hydrated waste placed on the drying table indirectly by heating.
Therefore, it has the fault that the drying efficiency of a water-containing waste is bad.
[0005]
In addition, when this hydrated incineration system is actually used, gelatin or the like dissolves in the steam generated when the hydrated waste is dried, and the solid matter such as dissolved gelatin accumulates in the passage returning to the combustion chamber. In the worst case, the passage is blocked and the combustion gas cannot be returned to the combustion chamber.
[0006]
An object of the present invention is to provide a combustion apparatus in which the above disadvantages are eliminated.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a combustion apparatus of the present invention uses a combustion chamber for burning waste, a combustion gas exhaust passage for exhausting combustion gas from the combustion chamber to the outside air, and a part of the combustion gas. A drying chamber for drying the hydrated waste, a drying chamber introduction passage connecting the middle of the combustion gas exhaust passage and the drying chamber, a combustion chamber introduction passage connecting the drying chamber and the combustion chamber, In order to return a part of the combustion gas from the combustion chamber to the combustion chamber, a bypass passage is formed to sequentially connect the drying chamber introduction passage, the drying chamber, and the combustion chamber introduction passage. Gas transfer means provided in the middle of the passage, for sucking a part of the combustion gas from the combustion chamber and returning it to the combustion chamber, the gas transfer means being in the middle of the bypass passage, The first provided downstream of the drying chamber And a second fan provided in the middle of the bypass passage and downstream of the first fan, the first fan and the second fan in the combustion chamber introduction passage, An outside air introduction passage that is connected midway and directly introduces outside air is provided, and the combustion gas discharged from the drying chamber introduction passage is applied to the water-containing waste in the drying chamber for heat exchange to dry the water-containing waste. It has been made.
[0010]
【Example】
An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a combustion apparatus as shown in FIG. 1. The combustion apparatus 1 generally includes a combustion section 2 for incinerating waste, The drying chamber 3 is configured to dry the hydrated waste using the heat of the combustion gas generated in the combustion unit 2.
[0011]
In addition, the combustion chamber 1 is provided with the drying chamber 3 because the waste heat of the combustion gas is generated in the drying chamber 3 before incinerating the hydrated waste containing a relatively large amount of water in the combustion section 2. It is for drying using. In addition, if the water-containing waste is incinerated at the combustion unit 2 as it is, a large amount of heat is required to evaporate the water contained in the water-containing waste, and the incineration efficiency in the combustion unit 2 is deteriorated.
[0012]
As shown in FIGS. 2 and 3, the combustion unit 2 is partitioned into a heat-resistant concrete furnace body 4 by a partition wall 5 into a combustion chamber 6 for burning waste and a cyclone chamber 7. 6 and the cyclone chamber 7 communicate with each other through a passage 8.
[0013]
A furnace lid 9 is located above the combustion chamber 6, and a combustion gas exhaust passage 10 (for example, a chimney) for exhausting the combustion gas from the combustion chamber 6 to the outside air is located above the cyclone chamber 7. . By moving the furnace lid 9, the upper part of the combustion chamber 6 is opened, and waste can be input from the opened upper part of the combustion chamber 6.
[0014]
4 and 5, reference numeral 3 denotes a drying chamber for drying the hydrated waste Z by using a part of the combustion gas. In the drying chamber 3, one end side 13 a of the drying chamber introduction passage 13 is provided. For example, it is provided above the inside of the drying chamber 3.
[0015]
In addition, a plurality of openings 13 b and 13 b are provided on one end side 13 a of the drying chamber introduction passage 13 so as to face the drying chamber 3, for example, to face the lower side of the drying chamber 3. The one end side 13a is fixed by support members 13c and 13c, and a long rotating drum 30 is provided so as to slide on the outer periphery of the one end side 13a.
[0016]
That is, one end side 13a of the drying chamber introduction passage 13 is provided so as to face the drying chamber 3, and the one end side 13a is located in the rotating drum 30 along the longitudinal direction of the rotating drum 30, In the rotary drum 30, a plurality of openings 13b, 13b are provided in the drying chamber introduction passage 13 on one end side 13a provided along the longitudinal direction of the rotary drum 30, and the plurality of openings 13b, 13b are dried. It is provided to face the room 3.
[0017]
The inner peripheral surface of the cylindrical body 30t of the rotating drum 30 is provided so as to slide on the outer periphery of the one end side 13a of the drying chamber introduction passage 13, and 30g is a bearing provided on the outer peripheral surface of the cylindrical body 30t. 30s is a sprocket, and 30r is a roller chain that transmits the rotation of the motor 30m to the sprocket 30s.
[0018]
As shown in FIGS. 5 and 6, for example, the rotary drum 30 is a cylinder having a hexagonal cross section, and has a ventilation part 30a on the outer side of the cylinder, that is, the outer peripheral part. Therefore, the water-containing waste Z can be taken in and out through the door 30b that can be freely opened and closed.
[0019]
As a result, the relatively high-temperature combustion gas from the combustion chamber 6 led to the drying chamber introduction passage 13 flows out from the plurality of openings 13b and 13b and directly hits the water-containing waste Z stored in the rotary drum 30. Can be dried.
[0020]
A receiving portion 3u for receiving the hydrated waste Z dried by the rotating drum 30 is provided below the rotating drum 30. The receiving portion 3u is placed on the rail 3L so that it can be taken in and out of the drying chamber 3. It is placed.
[0021]
As shown in FIG. 1, 13 is a drying chamber introduction passage that connects the middle of the combustion gas exhaust passage 10 and the drying chamber 3, and 14 is a combustion chamber introduction passage that connects the drying chamber 3 and the combustion chamber 6. .
[0022]
Then, in order to return a part of the combustion gas from the combustion chamber 6 to the combustion chamber 6, a bypass passage B is formed that sequentially connects and connects the drying chamber introduction passage 13, the drying chamber 3, and the combustion chamber introduction passage 14. ing.
[0023]
The combustion chamber introduction passage 14 is connected to an outside air introduction passage 14x that directly introduces outside air in the middle, and a combustion chamber introduction opening 14a is provided at the tip of the combustion chamber introduction passage 14 facing the combustion chamber 6. Yes.
[0024]
Further, as shown in FIG. 7, the filter F is in the middle of the bypass passage B and downstream of the drying chamber 3 [in this embodiment, filter members 20 and 21 are provided in the combustion chamber introduction passage 14 (filter Instead of the members 20 and 21, the filter member 22 may be provided on the suction side of the second fan F2.) However, the connection portion between the drying chamber 3 and the combustion chamber introduction passage 14 may be used. ] To remove the solid matter.
[0025]
As shown in FIG. 1, a part of the combustion gas from the combustion chamber 6 is sucked by the gas transfer means (for example, the first fan F1 and the second fan F2) provided in the middle of the bypass passage B. And returned to the combustion chamber 6.
[0026]
The gas transfer means is provided, for example, in the middle of the bypass passage B and in the middle of the bypass passage B (the middle of the combustion chamber introduction passage 14) and the first fan F1 provided on the downstream side of the drying chamber 3. It consists of a second fan F2.
[0027]
Therefore, in the combustion apparatus 1, when the furnace lid 9 is opened and waste is put into the combustion chamber 6 and the waste is combusted, the combustion gas passes through the passage 8 and the cyclone chamber 7, and the combustion gas exhaust passage 10. To the atmosphere.
[0028]
On the other hand, a part of the combustion gas is introduced into the drying chamber 3 by the first fan F1 through the combustion gas exhaust passage 10 (for example, a chimney) and the drying chamber introduction passage 13, and through the plurality of openings 13b and 13b. The combustion gas introduced into the drying chamber 3 dries the water-containing waste Z stored in the rotating drum 30 that is rotating.
[0029]
The gas obtained by drying the hydrous waste Z is returned to the combustion chamber 6 by the second fan F2 through the combustion chamber introduction passage 14. In the combustion chamber 6, the gas containing the odor generated in the drying chamber 3 is combusted in the combustion chamber 6 to prevent the gas containing the odor from being released to the atmosphere.
[0030]
The water-containing waste Z dried in the drying chamber 3 may be incinerated in the combustion unit 2, but may be disposed in a place other than the combustion unit 2. In the above-described embodiment, the plurality of openings 13b, 13b are provided in the lower part of the one end side 13 of the drying chamber introduction passage 13 so as to face the lower side of the drying chamber 3. 13b and 13b are preferably provided over the entire circumference of one end side 13 of the drying chamber introduction passage 13.
[0031]
【The invention's effect】
The combustion apparatus of the present invention dries hydrated waste using a combustion chamber for burning waste, a combustion gas exhaust passage for exhausting combustion gas from the combustion chamber to the outside air, and a part of the combustion gas. A drying chamber, a drying chamber introduction passage connecting the middle of the combustion gas exhaust passage and the drying chamber, a combustion chamber introduction passage connecting the drying chamber and the combustion chamber, and a combustion gas from the combustion chamber In order to return a part to the combustion chamber, sequentially, the drying chamber introduction passage, the drying chamber, and a bypass passage connecting the combustion chamber introduction passage are formed, and provided in the middle of the bypass passage, Gas transfer means for sucking a part of the combustion gas from the combustion chamber and returning it to the combustion chamber, and heats the combustion gas discharged from the drying chamber introduction passage against the water-containing waste in the drying chamber. Replace the water-containing waste by replacement Because those were, as in the prior art not indirectly, directly from to heat exchange, it is possible to dry the water-containing waste more efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic front sectional view of a combustion apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic front view showing a combustion chamber portion of the combustion apparatus of FIG.
FIG. 3 is a schematic cross-sectional view taken along the line AA in FIG. 2;
4 is a schematic front view showing a part of the drying chamber of the combustion apparatus of FIG.
5 is a schematic cross-sectional side view of a drying chamber portion of the combustion apparatus of FIG. 1. FIG.
FIG. 6 is a schematic front view showing a part of the drying chamber of the combustion apparatus of FIG.
FIG. 7 is a schematic cross-sectional side view of the filter of FIG.
[Explanation of symbols]
1 Combustion device 3 Drying chamber 6 Combustion chamber
12 Pre-combustion chamber
13 Drying room introduction passage
14 Combustion chamber introduction passage

Claims (1)

A combustion chamber for burning waste, a combustion gas exhaust passage for exhausting combustion gas from the combustion chamber to the outside air, a drying chamber for drying hydrous waste using a part of the combustion gas, and the combustion gas A drying chamber introduction passage connecting the middle of the exhaust passage and the drying chamber, a combustion chamber introduction passage connecting the drying chamber and the combustion chamber, and a part of the combustion gas from the combustion chamber to the combustion chamber In order to return, a bypass passage that sequentially connects and connects the drying chamber introduction passage, the drying chamber, and the combustion chamber introduction passage is formed, and is provided in the middle of the bypass passage so that the combustion gas from the combustion chamber A gas transfer means for sucking a part and returning it to the combustion chamber ;
The gas transfer means is provided in the middle of the bypass passage and on the downstream side of the drying chamber, and in the middle of the bypass passage and on the downstream side of the first fan. With a second fan,
An external air introduction passage that is connected midway between the first fan and the second fan of the combustion chamber introduction passage and directly introduces external air;
A combustion apparatus, wherein the combustion gas discharged from the drying chamber introduction passage is applied to the water-containing waste in the drying chamber and heat-exchanged to dry the water-containing waste.

Images