JPH07243629A - Method and apparatus for incinerating waste - Google Patents

Abstract

PURPOSE:To increase the efficiency with which waste is dried and burnt, enable an incinerating apparatus to be compact in structure and the disposal to be speeded up by injecting a flaw as the waste inside the incinerating furnace is agitated in a manner of burning the inside of the waste so as to expose the waste to the flame at an enlarged area. CONSTITUTION:The flame injected from a burner 5 of an incinerating apparatus shoots along a flow of air inside a cylindrical body 1 that is created from one side of the cylindrical body 1 to the other side by suction of a suction pump 14. Therefore the flame traverses through the middle of the cylindrical body 1. The waste thrown in though a loading port and deposited in a heap or mass inside the cylindrical body 1 is loosened and agitated by agitating vanes 8 which are attached to the rotary shaft 7 with alternated inclinations in opposite ways from the center of the cylindrical body 1. The waste constantly changes the parts exposed to the flame from the burner 5 with agitation, is thrown up by the agitating vanes 8 and spread toward the periphery inside the cylindrical body 1, and struck by the flame and dried as it falls from above inside the cylindrical body 1d Therefore the waste deposited in a heap or mass undergoes thermal decomposition through heating in a manner of being steamed through the inside and is carbonized and reduced to ash. This constitution enables making the waste less voluminous and sterilizing it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and incinerator for incinerating plastic bottles, expanded plastic trays, polymeric substances such as paper diapers, activated sludge, mud-like organic substances such as feces, and other wastes.

[0002]

2. Description of the Related Art Conventionally, wastes from general households, hospitals, grocery stores, food processing industries, etc. have been put in plastic bags and collected by a municipality or a garbage disposal company to dispose of the wastes. . However, it had to be stored until the garbage was collected. Since the waste is bulky, it requires a large storage space, and it produces a foul odor over time, and the waste discharged from the hospital contains pathogenic bacteria and is dangerous, so the storage space is also limited.

Therefore, there have been proposed incineration methods and incinerators in which waste is heated and dried or incinerated to reduce and sterilize the outer volume. However, both of them are large-scaled and the production cost of the device is high. It was The invention of the prior application (Japanese Patent Application No. 5-221990) beyond the present invention is limited to garbage.

[0004]

In the conventional waste incinerator, the inside of the deposit is not heated because the waste is incinerated from the surface of the deposit, and the combustion efficiency is poor. Further, since the internal structure of the incinerator is complicated, it is difficult to clean the inside of the incinerator.

Therefore, the incineration method and the incineration apparatus of the present invention burn the waste in a steamed state by incinerating the waste efficiently by directly hitting the inside of the accumulated polymer substance, mud-like organic substance and other waste with a flame. Use carbonized and ash to reduce the volume of waste and sterilize it, and at the same time increase the incineration efficiency of waste to downsize the incinerator and make it easy to clean the processing residue inside the incinerator. This is the purpose.

[0006]

In order to achieve the above object, the incinerator according to the present invention has an incinerator, which is a main body, as a cylindrical body 1 having side plates at both ends, and the central upper part of the cylindrical body 1 is provided. Alternatively, a waste input port 2 and a spray device including a spray pipe 17 for injecting water into the cylindrical body 1 and a solenoid valve 18 are provided in the flank portion, and a treated product that is incinerated into carbonized and ash is formed in the lower center part of the cylindrical body 1. Is provided, a rotating shaft 7 is provided inside the cylindrical body 1 on the central axis of the cylindrical body 1, and stirring blades 8 extending symmetrically from the rotating shaft 7 in two directions are arranged in series with the rotating shaft 7. Set up.

The stirring blades 8 are attached to the rotary shaft 7 with blade angles that are inclined in opposite directions with the central portion of the cylindrical body 1 as a boundary. The rotary shaft 7 is rotated by the power transmitted from the drive motor 11. The rotary shaft 7 and the stirring blade 8 may be made of a fire-resistant metal material such as stainless steel because the flame is in direct contact with the rotating shaft 7 and the stirring blade 8.

Gas or kerosene (heavy oil) for injecting a flame into the inside of the cylindrical body 1 at the lower part of the side plate 9 of the cylindrical body 1 at the upper part of which is provided with a valve 21 capable of adjusting the opening degree and at the lower part thereof. , Light oil, waste oil, etc. may be used).
A suction port 12 for exhausting combustion gas from the cylindrical body 1 is provided at an upper portion of the cylindrical body 1 on the side of the other side plate 10. Also,
A temperature sensor 19 is attached to the suction port 12. The temperature sensor 19 passes through the control device 20 and the spray device 1
7, 18, the burner 5, the air supply port opening degree adjusting valve 21, and the controller 20 sends a command in response to a signal from the temperature sensor, the amount of water discharged from the spray pipe 17, the thermal power of the burner 5, and the air supply port 6. The opening degree is adjusted by the air supply opening degree adjusting valve 21.

[0009]

The burner 5 of the incinerator configured as described above
The flame ejected from the cylinder 1 is ejected from one side of the cylinder 1 to the other side along the flow of air in the cylinder 1 due to the suction of the suction pump 14, so that the center of the cylinder 1 serves as the passage of the flame. .

Thereupon, the waste that has been charged from the charging port 2 and has accumulated or clumped in the cylindrical body 1 is loosened by the stirring blades 8 and while being stirred, the surface of the burner 5 which is exposed to the flame is exchanged. Moreover, since it is scooped up by the stirring blade 8 and spreads around the inside of the cylindrical body 1 and falls from the upper portion of the cylindrical body 1, it hits a flame and is incinerated by drying,
The accumulated wastes and lumps are pyrolyzed by steaming from the inside to be carbonized and ash.

Since the stirring blades 8 are attached to the rotary shaft 7 so as to be inclined in opposite directions with respect to the central portion of the cylindrical body 1 as a boundary, wastes spread at both ends in the cylindrical body 1 are stirred by the stirring blades 8. , Is always collected in the central portion of the cylindrical body 1 and positioned on the path of the flame.

By constantly controlling the combustion temperature of the waste in the cylindrical body 1, the temperature of the inside of the incinerator does not suddenly rise to a high temperature due to the combustion of the waste itself, so that the waste is melted or pyrolyzed by heat and steamed. It becomes carbonized and ash.

When the stirring blade 8 and the rotating shaft 7 are made of a ceramic material, the temperature of the stirring blade 8 and the rotating shaft 7 becomes high due to the flame from the burner 5 and the combustion heat of the waste, and the far infrared rays emitted from the ceramic At the same time as the inside of the waste is heated, harmful gases are decomposed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, the lid 3 of the charging port 2 is opened from the charging port 2 provided in the central upper portion of the cylindrical body 1 of the incinerator body. Inject high-polymer waste such as PET bottles and used paper diapers. After closing the lid 3 of the charging port 2, the rotational power of the drive motor 11 is transmitted to the rotary shaft 7 by the chain and the stirring blade 8 is rotated while controlling the rotation of the drive motor 11 that continuously changes the speed. The waste is collected by the stirring blade 8 into the cylindrical body 1.
It hits the flame ejected from the burner 5 while being stirred so as to be collected in the central part of the.

As shown in FIG. 2, the waste in the incinerator is scraped up by the rotation of the stirring blade 8 and spreads on the inner peripheral surface of the cylindrical body 1. At this time, a hollow portion is formed inside the waste, and the flame ejected from the burner 5 passes through the hollow portion, so that a wide range of the waste hits the flame and burns.

Referring again to FIG. 1, the flame flows toward the suction port 12 along with the flow of gas sucked from the suction port 12 while incinerating the waste. The polymer waste is burned by the flame and at the same time by the burning energy of the waste itself. Therefore, the temperature inside the incinerator becomes high. The temperature inside the incinerator is the temperature sensor 19 attached to the suction port 12.
And is sent to the control device 20. When the temperature detected by the temperature sensor 19 exceeds 200 ° C., the control device 20
In response to the command from the above, the solenoid valve 18 of the spray device provided on the upper part of the cylinder 1 operates to inject water from the spray pipe 17 into the incinerator while adjusting the amount of water, and at the same time, the air supply opening degree adjusting valve 21 works. By adjusting the opening degree of the air supply port and the heating power of the burner 5, the temperature detected by the temperature sensor 19 is constantly controlled to be a constant temperature of about 200 ° C.

The exhaust gas sucked out from the suction port 12 is once separated into a solid and a gas by gravity, which is a gas-solid separation device 1.
3 and separates into combustion slag and hot air, and then passes through the suction pump 14 and enters the waste predrying device 15.

Since the hot air discharged from the suction pump 14 has a high temperature of about 120 ° C. or more, the hot air is put under the waste placed on the net 16 of the waste predryer 15 in order to effectively utilize the heat. Send in. The hot air passes through the inside of the waste and is discharged into the atmosphere while evaporating the water content of the waste.

From time to time, the state of dry incineration of the waste inside the cylinder is observed from the air supply port 6 and the waste input port, and if it is considered that the dry incineration of the waste has reached the predetermined processing purpose, the burner 5 and the stirring are performed. The rotation of the blades 8 is stopped, and then the suction pump 14 is stopped to cool the waste to some extent, and then the processed product is taken out from the outlet 4. After completion of the incineration process, water is sprayed from the upper spray pipe 17 to wash the inside of the incinerator as needed.

FIG. 3 shows the integrated appearance of the incinerator and auxiliary equipment. The outside of the incinerator and ancillary equipment will become hot during operation, so a removable cover should be installed to prevent the body from directly touching the incinerator or to be installed outdoors to prevent dust and weather exposure. It is hung.

[0021]

Since the present invention is constructed as described above, it has the following effects.
Since the flame blown out from the burner 5 directly burns the inside of the waste and incinerates the waste while stirring it, the area in which the flame hits the waste is large and the dry incineration efficiency of the waste is high. Can be downsized and processed quickly.

Due to the miniaturization of the incinerator, the installation place of the incinerator is not limited, and the incinerator can be installed nearby, and dangerous wastes containing pathogenic bacteria discharged from hospitals are immediately incinerated without a long transportation route. Can be processed.

Since the waste is gradually pyrolyzed at low temperature, combusted and carbonized, and ash is emitted, the emission of harmful gas is extremely small.

Since the flame passes on the axis of the cylinder 1, the outer shell of the cylinder 1 does not come into direct contact with the flame,
Moreover, since the agitated waste does not reach a high temperature because it covers the peripheral portion of the cylindrical body, the life of the incinerator is extended.

Since the stirring blades 8 are two blades in series with the rotary shaft 7, a large space is created inside the cylindrical body 1 when the blades are made vertical. Therefore, the inside of the cylindrical body 1 can be cleaned from the inlet 2. It will be easy.

Since the far-infrared rays emitted from the ceramic decompose the harmful gas by making the stirring blade 8 and the rotating shaft 7 out of ceramic, the outflow of the harmful gas to the outside of the incinerator can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a waste incinerator of the present invention.

FIG. 2 is a cross-sectional view showing the inside of the cylindrical body of the incinerator showing the embodiment of the present invention.

FIG. 3 is an external view of an incinerator and an accessory device of the present invention. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Input port 3 Input port lid 4 Burner outlet 5 Burner 6 Air inlet 7 Rotating shaft 8 Stirring blade 9 One side plate 10 The other side plate 11 Drive motor 12 Suction port 13 Solid-gas separation device 14 Suction pump 15 Pre-dryer 16 Net 17 Spray Pipe 18 Solenoid Valve 19 Temperature Sensor 20 Control Device 21 Air Supply Port Opening Adjustment Valve

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location F23G 5/00 ZAB E

Claims (8)

[Claims] 1. A method of incinerating waste, which comprises incinerating the waste by agitating the waste in an incinerator and ejecting a flame into the agitator. 2. The waste is incinerated while agitating the waste in the incinerator while ejecting a flame into the agitator, and by injecting water into the incinerator to adjust the temperature in the incinerator. How to incinerate waste. 3. The method for incinerating waste according to claim 2, wherein the waste is a polymer substance. 4. The method for incinerating waste according to claim 2, wherein the waste is an organic matter such as animal feces and activated sludge. 5. A burner (5) for ejecting a flame is provided from one side of a cylindrical body (1) whose both sides are closed, and is agitated by a stirring blade (8) provided inside the cylindrical body (1). A suction port (12) for sucking combustion exhaust gas from the other side of the cylindrical body (1) through the waste is provided, and a control device (20) for detecting the temperature in the incinerator and controlling the incineration temperature is provided. A device for incinerating waste, characterized by incinerating carbonized and ash. 6. Side plates (9, 10) at both ends of the cylindrical body (1).
And a stirring blade (8) attached to a rotating shaft (7) concentric with the cylindrical body (1).
Flame injection burner (5) on the lower part of one side plate (9) side
And an inlet (6) having an opening degree adjusting valve (21) on the upper part, and a suction port (12) for extracting combustion exhaust gas in the incinerator and a temperature sensor (19) on the other side plate (10) side. And a spray device (17, 18) for injecting water into the cylindrical body (1) from the upper central part or the abdominal part of the cylindrical body (1) and a waste input port (2) are incinerated in the lower central part of the cylindrical body (1). A control device (20) provided with an outlet (4) for taking out a substance and controlling the water injection amount and the flame ejection amount according to the temperature in the incinerator.
An incinerator for waste, characterized by being provided with. 7. A solid-gas separation device (13) for separating exhaust gas from the incinerator following the suction port (12), a suction pump (14) for removing the exhaust gas in the incinerator, and pre-drying waste. The waste incinerator according to claim 6, further comprising an auxiliary device connected to the pre-dryer (15). 8. The stirring blade (8) extends symmetrically with respect to the rotating shaft (7) in two directions, and is inclined in opposite directions at the central portion of the cylindrical body (1) and arranged in series with the rotating shaft (7). , Rotating shaft (7)
7. The waste incinerator according to claim 6, wherein a ceramic material is used for all or part of the stirring blade (8).