JP3437613B2 - Incinerator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator and, more particularly, to an incinerator.
The present invention relates to an incinerator for incinerating solid waste such as industrial waste. Further, the present invention relates to an incinerator for incinerating a mixture of solid and liquid such as mud or the like or a solid. 2. Description of the Related Art Most solid waste such as kitchen waste such as cooking waste, garbage such as paper, wood chips, and synthetic resin pieces, and solid waste such as sediment sludge are incinerated. In this incineration process, a rotary kiln system is used because of its high combustion efficiency. In the rotary kiln method, solid waste is charged from above a rotating cylindrical body that is supported at an angle, and the charged solid waste is stirred by rotating the cylindrical body and by repeatedly falling by the action of a stirring claw. While moving downward, it is dried by hot air entering from below,
Incinerated with increasing fire. When the rotary kiln system is used as described above, the solid waste is well stirred, so that the combustion efficiency is good. [0003] However, in the conventional rotary kiln system, the rotating portion is inclined, and the stirring claw is projected in the radial direction to form a cylindrical cross section. During the rotation of the rotating part, by the stirring claw provided on the cylindrical inner surface, during the rotation of the cylindrical inner surface,
Agitated by being lifted and then dropped,
Dried and incinerated. Therefore, muddy material having low viscosity flows relatively without stopping and cannot be sufficiently incinerated, which is a problem. Therefore, if the drop point of the stirring claw is increased, the stirring effect by the drop is increased, but dust is easily generated, which is a problem. An object of the present invention is to solve a problem associated with incineration of low-viscosity mud in a conventional rotary kiln incinerator. According to the present invention, even a low-viscosity material to be processed can be stopped and dried,
It is another object of the present invention to provide a rotary kiln incinerator that generates little dust and has a large stirring effect. That is, according to the present invention, there is provided an inlet portion of a workpiece and the workpiece.
With a rotating part in which an incineration part is formed following the inlet part
That the incinerator of the rotary kiln system, the object to be processed
The entrance has a hollow cross-section that is formed in a circular shape.
Is provided with a plurality of stirring blades, inside the inlet portion,
A stirring shaft having a stirring rod is provided rotatably, and
The hollow section has the same polygonal cross section as the hollow section.
Connecting a plurality of the cylindrical body, coaxial to the longitudinal direction of the rotating portion being
Formed between the adjacent cylinders
The downstream flat part of the side cylinder is located at the upstream corner of the downstream cylinder.
The downstream corner of the upstream cylinder is the upstream plane of the downstream cylinder.
The incinerator is characterized by being located in the incinerator. [0005] In the rotary kiln incinerator of the present invention, the rotating portion is formed by coaxially connecting at least one cylindrical portion having a polygonal internal cross-sectional shape. In the present invention, the polygon of the cylindrical body, the larger the interior angle of the polygon, the smaller the height of the falling point,
For example, it can be appropriately set according to the viscosity of the solid waste. In the present invention, when a plurality of polygonal cylinders are continuously connected, the plane portion of one adjacent polygonal cylinder is a corner portion of the other adjacent polygonal cylinder,
In the longitudinal direction, it can be formed such that a corner portion of the other adjacent cylinder is positioned on a plane portion of one adjacent cylinder.
When formed in this manner, the cylinder is provided to be inclined in the moving direction, so that the cylinder moves between the corner of the adjacent polygonal cylinder on the upstream side and the plane portion of the other adjacent cylinder on the downstream side. In the direction, a step portion and a weir portion with a drop can be formed, and the workpiece dried on the heated side is constantly dropped into a pool portion where the weir portion stops, and the stirring effect is obtained. And the drying effect can be increased. In the present invention, the heating gas is preferably introduced in a direction inclined with respect to the axis of the rotary kiln so as to heat the wall of the rotary kiln. In the present invention, the plurality of cylinders are provided coaxially with the rotation axis of the rotation unit so that each of the cylinders can work uniformly. In the present invention, the surface of the rotary kiln is heated by the heating gas at the upper portion, moves downward by rotation, and comes into contact with the workpiece, so that the workpiece can be efficiently heated and dried. In the present invention, every other polygonal cylinder can be provided. In this case, for a polygonal cylinder,
By arranging a cylindrical body having an appropriate diameter, it is preferable to form a step portion having a head and a weir portion for receiving the fall of the incineration material from the step portion in the moving direction, since the stirring effect can be increased. According to the present invention, a rotary section of a rotary kiln type incinerator is formed by connecting at least one coaxially in the longitudinal direction with a cylindrical body having an internal sectional shape formed in a polygonal shape. Therefore, the falling height can be easily set according to the size of the interior angle of the polygon of the polygonal cylindrical body, and the amount of the incineration material accumulated in the weir can be appropriately set. Therefore, even a low-viscosity material to be processed can be stopped and dried and incinerated. Further, the present invention provides a rotary kiln type incinerator in which a rotating portion continuously and coaxially connects a plurality of cylindrical bodies having an internal cross-sectional shape formed in a polygonal shape in the longitudinal direction. Since the flat portion of one of the fitted cylinders is provided with the corner of the other adjacent cylinder positioned, the stepped portion having a head in the moving direction and the incineration object falling from the stepped portion are received. The weir portion allows the stirring effect to be increased, for example, a rotary kiln with a short length can be used, and solid waste can be incinerated in a relatively short time, achieving high incineration efficiency. be able to. Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to the following examples and descriptions. FIG. 1 is a schematic side sectional view of a rotary kiln type incinerator according to an embodiment of the present invention, with a part thereof omitted, and FIG. 2 is a schematic front sectional view of the embodiment of FIG. In the embodiment shown in FIG. 1, a rotary kiln type incinerator 1 includes a treatment object introduction part 2, a kiln part 3 and an incineration matter discharge part 4. In the present example, the kiln part 3 has an inlet part 5 whose inner surface is formed in a cylindrical shape, and the incineration part 6 has a hollow section formed in a hexagonal shape. Each of the refractory material layers formed on the inner surface of the kiln portion 3 is a caster made of irregular refractory material, and a mold (not shown) surrounds the hollow section at the inlet portion 5 in a circular shape. Inside, a mud-like irregular-shaped refractory material is driven into each, a hollow section is formed into a block 7 having a circular cross section, and the incineration section 6 is divided into a plurality, and each of the hollow sections is surrounded by a hexagon. A hollow section is formed in a hexagonal block 8 for each of the sections. In this embodiment, in the incineration section 6, the side 9 of one adjacent block of the block having the hexagonal hollow section formed in this way is adjacent to the corner 10 of the other adjacent block. It is formed so that it may be located. The gaps between the blocks are filled with refractory cement and formed tightly. In this example, since the block having the hexagonal hollow section of the incineration unit 6 is provided such that the side 9 of one of the adjacent blocks is positioned adjacent to the corner 10 of the other block, Side 9 of the side block
A step 11 having a drop is formed between the upstream corner 10 and the downstream corner 10, and between the upstream corner 10 and the downstream side 9,
A dam 12 is formed. In this embodiment, the entrance 5 has a hollow section formed in a circular cross section, and the inner wall of the entrance 5 has an entrance 5
There are provided a plurality of stirring blades 13 for stirring the object to be treated introduced into the apparatus. Further, in this example, a stirring shaft 15 provided with a stirring rod 14 in a radial direction is rotatably provided at the inlet portion 5 in order to increase the stirring of the workpiece introduced into the inlet portion 5. Have been. In this example, the sprocket 16 of the stirring shaft 15 is driven in a chain by a sprocket 18 provided on the rotating shaft on the side of the motor 17. In the present embodiment, unlike the conventional rotary kiln type incinerator, the heated gas introduction passage 19 heats the inner wall surface of the kiln section 3 in the kiln section 3. Are provided in a direction inclined with respect to the axis of. In this example, the workpiece introduction path 20 of the screw conveyor is provided to be open at the entrance 5 of the kiln 3. Further, in the incineration material discharge section 4, a screw 22 for taking out incineration ash is provided at the bottom 21 and an exhaust pipe 23 connected to a cyclone (not shown) is provided at the top as in the related art. In this example, the kiln unit 3 is driven by a chain, and a gear 25 provided on a body 24 of the kiln unit 3 is connected to a governor 27 of a motor 26.
The sprocket 28 provided on the rotating shaft of
And are chain driven. In this example,
One of the two tires 30 and 31 provided on the body 24 of the kiln section 3 has a thrust roller 32.
The other tire 31 is rotatably supported by a support roller 33. Since the present embodiment is configured as described above, the object to be treated is introduced into the inlet 5 of the incinerator 1 from the object introduction passage 20. An object to be treated, such as solid waste, is lifted and dropped by the stirring blades 13 of the inlet portion 5, and is stirred by the stirring rod to sufficiently come into contact with the heated inner wall surface of the kiln portion 3 and the heated gas. Heat, dry and burn. The kiln section 3 is inclined downward at an angle of 2 to 3 degrees toward the incineration material discharge section 4, and the object to be treated such as low-viscosity solid waste has a relatively small angle of repose. Due to the rotation of the object, the object to be processed located at the corner 10 is lifted, falls down or the like at random, comes into contact with the heating gas, is dropped at the adjacent corner 10, and accumulates at the corner 10. Mix into the object. On the other hand, corner 1
The object to be processed that stays at 0 comes into contact with the heated inner wall surface, and is heated in the process, so that the object can be uniformly heated. In this embodiment, between the corner 10 of the hexagonal hollow section of the kiln section and the side 9 adjacent to the downstream side, the weir 1
2 are formed, and the object to be processed is easily formed in the corner portion 10. On the other hand, the side 9 and the downstream corner 1
Since the step portion 11 having a drop is formed between 0 and 0, the processing object falling from the side portion 9 to the corner portion 10 is accumulated in the weir portion even if it is a low-viscosity solid waste, and is heated. The object falls into the object to be processed, and the stirring action is increased. As described above, in the present example, the object to be processed can be heated, dried, and burned in the incineration section 6 formed by the hexagonal block 8 via the block wall surface heated by the heating gas. In addition, the unburned workpiece mixes with the burning workpiece in the weir portion and comes into efficient contact with the block wall surface heated by the heating gas, so that drying and incineration proceed. Therefore, in this example, even low-viscosity liquid or mud-like solid waste is stopped at the weir,
It will be dried and incinerated without flowing.
In addition, incineration can be efficiently performed even on the solid waste that has become smooth. The present invention provides a rotary kiln type incinerator in which at least one cylindrical body having a polygonal inner cross-sectional shape is coaxially connected in the longitudinal direction with a rotating part of a rotary kiln incinerator. Because it is formed, the height of the fall can be easily set according to the size of the interior angle of the polygon of the polygonal cylinder, and the amount of incineration material that accumulates in the weir can be set appropriately. This makes it easier to design the retention of the object in the rotary kiln according to the properties of the object, as compared with the conventional rotary kiln incinerator. Further, according to the present invention, the rotary section of the rotary kiln type incinerator has a circular hollow section at the inlet of the object to be treated.
It has a plurality of stirring blades on its inner wall.
A stirring shaft having a stirring rod is rotated inside the inlet.
The object to be processed is thereby stirred.
While being lifted and dropped by the stirring blade,
The inside wall and heating of the kiln
Full contact with hot gas, heated, dried and burned,
In addition, a plurality of cylinders having an internal cross-sectional shape formed in a polygon are connected in the longitudinal direction continuously and coaxially, and the plane portion of one adjacent cylinder has a corner of the other adjacent cylinder. Because of the location of the incinerator, a step with a drop and a weir that receives the fall of the incineration material from the step are formed in the moving direction, which is smaller than that of a conventional rotary kiln incinerator. As a result, the stirring effect can be increased, for example, as compared with a conventional rotary kiln incinerator,
The length of the kiln can be reduced, the incineration can be performed regardless of the viscosity of the solid waste, the incineration time can be shortened, and the incineration efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side sectional view of a rotary kiln type incinerator according to an embodiment of the present invention, with a part thereof omitted. FIG. 2 is a schematic front sectional view of the embodiment of FIG. [Description of Signs] 1 Incinerator 2 Object introduction part 3 Kiln part 4 Incineration matter discharge part 5 Inlet part 6 Incineration part 7 Block 8 with a hollow section in a circular section 8 Block 9 in a hollow section in a hexagonal section 9 Side portion 10 of hexagonal block Corner of hollow section 11 of hexagonal block 11 Step portion 12 Weir portion 13 Stirring blade 14 Stirring rod 15 Stirring shaft 16, 18, 28 Sprocket 17 Motor 19 Heating gas introduction path 20 Screw conveyor Bottom part 22 Screw 23 Exhaust pipe 24 Body part of kiln part 25 Gear 26 Motor 27 Governor 29 Chain 30, 31 Tire 32 Thrust roller 33 Support roller

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Claims (1)

(57) [Claims] [Claim 1] An entrance of an object to be treated and an entrance of the object to be treated
In a rotary kiln type incinerator having a rotating section in which an incineration section is formed following the section , an inlet section of the object to be treated is provided.
Has a circular hollow section and a plurality of inner walls.
Stirring blade is provided, and a stirring rod is provided inside the inlet portion.
A rotatable stirring shaft is provided in the incineration section.
The hollow sections are formed in the same polygon, respectively.
And a plurality of tubular bodies are, connected coaxially to the longitudinal direction of the rotating part
And an upstream cylinder between adjacent cylinders.
The downstream flat portion of the body is located at the upstream corner of the downstream cylinder,
The downstream corner of the upstream cylinder is located on the upstream flat surface of the downstream cylinder.
An incinerator characterized by being located .