JPH0480511A - Incinerator - Google Patents

Abstract

PURPOSE:To improve a combustion efficiency and prevent non-burned solid materials from being discharged by a method wherein a refractory vertical cup-shaped incinerator is inclined and rotatably supported on a base table, an ash discharging port is projected and opened at a substantial central part of the incinerator and cooperatively connected to a discharging pipe. CONSTITUTION:An incinerator 1 is made into a vertical slant rotary furnace. Ignited substances are rotated without arranging any agitating device under a movement of centrifugal force in a parallel direction based on a rotation of the furnace and then a fresh combustion layer is always exposed to an upper surface, thereby a superior combustion can be attained. A layer of relative heavy ignited substance becoming sooth at an outer circumference, a layer of coal layer at an intermediate layer, a layer of ash at a central part and a fluidized sand layer at a bottom part of the incinerator are formed due to a difference in specific weight of the ignited substances and these substances move in sequence. In addition, since an ash discharging port 4 is projected and opened near a central part of the incinerator 1, light ashes are naturally collected at the central part and finally discharged out of the discharging port 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an incinerator, particularly an incinerator for industrial waste, garbage, sludge, waste oil, etc.

[Prior Art] In general, in incinerators for industrial waste, garbage, sludge, waste oil, etc., it is important to improve the combustibility and to suppress the emission of flue gas containing solids such as ash as much as possible. ing. Traditionally, in order to improve combustibility, whether it is a vertical furnace or a horizontal furnace,
It was common to provide stirring means.

However, installing a stirring means in a high-temperature furnace not only has a short lifespan of the stirrer, requiring cost and labor to replace it, but also has the drawback that unburned ash dust is thrown up by the stirring and discharged from the chimney. . As an alternative to the stirring means, for example, a tilting rotary incinerator is known (Japanese Patent Application Laid-Open No. 49-421 Ei8). but,
Although this tilting rotary incinerator transfers the material to be incinerated in place of a stirring means, it is a type of so-called horizontal rotary kiln and does not have the ability to suppress the emission of incompletely burned ash.

For this reason, it was necessary to provide a secondary combustion chamber between the chimney and the chimney, and to provide water spraying means, making it inevitable to increase the size of the device.

On the other hand, it is also well known to provide secondary or tertiary combustion chambers, or to use natural air supply or forced ventilation, in order to improve combustibility. For example, it is known that as an air supply method, the flue is made into a double pipe, and heated outside air is supplied to the exhaust smoke through a large number of air supply holes to cause self-combustion (Japanese Patent Laid-Open No. 54-4424
Publication No. 0).

However, although there is a secondary combustion effect with the air supply method,
There is also a known method in which one end of the flue opens into the side wall of the incinerator (Japanese Unexamined Patent Publication No. 56-94113), but since the flue rotates perpendicularly to the material to be incinerated, this method also generates ash dust. It is inevitable that things will rise again. In any case, the conventional air supply system focuses only on the combustion effect, and the reality is that it has the opposite effect on suppressing ash dust. Therefore, some kind of ash removal means is required between the furnace and the chimney, and it has been difficult to design a simple incinerator in which the chimney is directly attached to the upper part of the furnace.

[Problems to be Solved by the Invention] The present invention provides a tilting rotary vertical incinerator that eliminates the above-mentioned problems, has good combustion efficiency, and has a simple structure without the risk of accompanying discharge of unburned solids. The purpose is to

[Means for Solving the Problems] In Fig. 1 of the incinerator according to the present invention which achieves the above object, the refractory vertical bowl-shaped furnace body 1 has an angle of about 1 with respect to the vertical axis.
It is rotatably supported on the base 10 with an inclination of 0 degrees. 1
1 is its variable speed reduction drive device. In the present invention, an ash discharge port 4 is opened and protrudes from approximately the center of the furnace body 1, and a discharge pipe 1
It is connected to 2. An opening/closing means 13 is provided at the outlet of the discharge pipe so that the discharge can be discharged to a waiting moving vehicle 14 when necessary. Reference numeral 17 denotes an exhaust canopy for the furnace body 1.

On the other hand, the lid 2 is fixed to the frame 15 so as to cover the top of the furnace body 1. The lower end of the flue of the chimney 3 directly opens approximately at the center of the lid 2. In the present invention, from the lower part of the flue of the chimney 3 to the lid 2.
A mantle 5 is provided over the upper surface of the air supply passage 6 to form an air supply passage 6. The air supply path 6 is connected to a forced air blower 7 on the one hand;
The other side communicates with an air supply port 8 and a small air hole 9 provided in the lid 2, respectively. 6A is a natural ventilation hole. The present invention has been established for air supply whitening. The small pores 9 suppress the flames gathered near the core and ash dust from flying up, and the lid 2
An exhaust stop plate 16 is provided on the outer edge of the exhaust valve. 18 is a burner, 19 is a thermometer, and 20 is a hopper for charging materials to be incinerated.

[Function] In the waste incinerator of the present invention constructed as described above, first, the furnace body 1 is made into a vertical tilted rotary furnace. Even without a stirrer, the material to be incinerated is rolled, and a fresh combustion layer is constantly exposed on the top surface, resulting in good combustion. In addition, due to the difference in specific gravity of the materials to be incinerated, a layer of relatively heavy materials to be incinerated that becomes flames is formed at the outer periphery, a layer that causes return fire in the middle, a layer of ash in the center, and a layer of fluidized sand at the bottom of the furnace. and will be migrated sequentially. In the present invention, since the ash discharge port is provided in the vicinity of the true center of the hearth 1, light ash naturally gathers in the center and is discharged from the discharge port 4.

In addition, by supplying air from the air supply port 8 of the lid 2 in a spiral manner in the rotational direction of the reactor body 1, flames generated by transfer can be prevented from rising from the small air holes 9 toward the reactor core. The air is oppressive.

[Effects of the Invention] In summary, the incinerator of the present invention provides the following practical advantages.

■0.Good combustion can be obtained without complicated means such as a stirrer.

■ Ash is naturally separated and discharged from the hearth, and there is no risk of it escaping into the chimney.

(2) As a result of the above, the chimney can be directly connected, and the overall structure of the incinerator becomes simple.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the incinerator of the present invention.

Claims (3)

[Claims] (1) A bowl-shaped vertical furnace body (1) that is provided with an ash discharge port (4) projecting from the center of the hearth (1), and that is tilted as a whole and is rotatable. (2) is connected to the blower (7) through the air supply path (6) formed by the mantle (5) extending from at least the lower part of the flue to the upper surface of the chimney (3), and is connected to the furnace body (1). A reactor lid (8) equipped with an air supply port (8) opened in a spiral shape parallel to the rotation direction and a large number of small air holes (9) opened approximately toward the reactor core.
2). (3) An incinerator comprising a vertical tilting rotary furnace body (1) according to claim (1) and a fixed upper lid (2) according to claim (2).