JP3019824B2 - Incinerator and incinerator management method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator, and more particularly to an incinerator which can completely burn waste such as plastic, rubber, waste oil, paint and the like, and has little smoke emission.

[0002]

2. Description of the Related Art In recent years, waste treatment has become a problem from the viewpoint of pollution prevention. The problem with waste disposal is that when filling up waste, it is necessary to secure a large disposal site, but it is difficult to secure such a place. In addition, waste oil and the like have a problem that if they are discarded in the same place as general garbage and the like, they may cause a problem of contamination of water resources.

[0003] If waste is incinerated, it is convenient to reduce the amount of waste. However, when the combustion temperature of the waste is low, it is in an incomplete combustion state, and there is a problem that the concentration of dioxin and dibenzofuran (dioxins) in the exhaust gas increases. In recent years, there is a concern that exposure to dioxins and the like for a long period of time may adversely affect the human body.

[0004] Incinerators include a direct heat type and a dry distillation type. FIG.
1 shows an example of a direct heat incinerator. In a direct heat incinerator, a fire such as waste tires is put in after injecting a treated material, and the treated material starts burning. Although not shown in the drawing, air may be supplied from the lower part of the incinerator. As the material burns, a flame rises upward from the bottom of the incinerator. The temperature distribution in the incinerator at this time is about 600 ° C. in the lower part, about 800 ° C. in the central part, and about 1200 ° C. in the upper part.

As is clear from this, only the uppermost part of the processed material burns completely, and the other parts are in an incomplete combustion state. For this reason, there is a possibility that dioxins are generated from a part in an incomplete combustion state. Further, from the incompletely burned portion, carbon components such as carbon black contained in rubber, which is a main component of the waste tire, are discharged as black smoke without sufficiently burning.

[0006] The state of incomplete combustion tends to occur when the temperature in the furnace immediately after the start of operation of the incinerator has not risen sufficiently. Immediately before the operation is stopped, the remaining amount of the processed material is small and the amount of heat is insufficient, so that a high combustion temperature cannot be secured and an incomplete combustion state is likely to occur.

Further, in the case where the operation is performed while continuously supplying the processed material to the furnace, the furnace temperature (combustion temperature) may fluctuate depending on the amount of the processed material. Complete combustion may occur. Also,
Depending on the type of the processing object, the temperature in the furnace may temporarily decrease, and a state of incomplete combustion may temporarily occur, for example, when the type of the processing object changes during operation.

In particular, if the aggregate of the treated material is in a lump inside the incinerator, the burning temperature of the surface of the lump increases during incineration and complete combustion takes place. It is in an incomplete combustion state at the combustion temperature. For this reason,
Exhaust gas containing a large amount of dioxins was generated from the inside of the lump in the state of incomplete combustion.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide an incinerator capable of burning a substance to be burned with almost no emission of smoke. Another object of the invention is to provide
It is an object of the present invention to provide an incinerator that can keep the concentration of harmful exhaust gas low. It is another object of the present invention to provide an incinerator that emits almost no smoke by burning the material to be burned almost completely. Another object of the present invention is to prevent incomplete combustion of a burnable object and generation of harmful gas when the temperature in the furnace decreases and a high combustion temperature cannot be secured immediately after the start of operation or immediately before the stop of operation. It is to provide a safe incinerator to prevent. Another object of the present invention is to provide an incinerator that can perform almost complete combustion after increasing the combustion temperature even when a high combustion temperature cannot be ensured immediately after the start of operation or immediately before the stop of operation. is there. Another object of the present invention is to provide an incinerator that can control the supply amount and the like according to the type of the burning object and the like so that the burning object can always be almost completely burned at a high combustion temperature. Another object of the present invention is to raise the furnace temperature even when a high furnace temperature cannot be ensured, and to burn almost completely the object to be burned in the furnace where the effect of increasing the temperature is large. It is to provide an incinerator that can be used. Another object of the present invention is to burn an object to be burned almost completely at a high combustion temperature as a whole, regardless of the shape, form, volume, etc. of the object to be burned, such as when the object to be burned is accumulated in a lump. It is to provide an incinerator that can be used. It is another object of the present invention to provide an incinerator that can burn a substance to be burned almost completely by enclosing a high temperature portion at the time of incineration at the bottom of the incinerator. It is another object of the present invention to provide an incinerator that can burn a substance to be burned almost completely by causing a convection flowing toward a bottom at a lower central portion of the incinerator. Another object of the present invention is to supply air or auxiliary fuel toward the bottom in the vicinity of the bottom of the incinerator so that the combustion temperature near the bottom is higher than the other parts and the burnable material is almost completely burned. It is to provide an incinerator capable of. It is another object of the present invention to provide an incinerator that can suppress the temperature of exhaust gas generated by combustion of an object to be burned or auxiliary fuel from becoming too high and prevent generation of harmful gas.

[0010]

SUMMARY OF THE INVENTION An incinerator according to the present invention is
A combustion chamber in which the porcelain is burned, and a temperature of the combustion chamber
Room temperature detecting means for detecting
The supply of the material to be burned to the combustion chamber on the basis of the output temperature.
Supply control means for controlling the supply, and raising the temperature of the combustion chamber.
Room temperature raising means for raising, the room temperature detecting means,
The temperature of the combustion chamber portion raised by the room temperature raising means
Detecting, the supply control means detects the room temperature detection means
If the value does not exceed the set value, the object to be burned into the combustion chamber
And the room temperature raising means collects supplementary fuel.
Means for storing, by burning the auxiliary fuel
For raising the temperature of the combustion chamber and supplying air
A blower and an auxiliary fuel supply for supplying the auxiliary fuel.
Supply means, and the air supplied from the blower or
Injecting the auxiliary fuel supplied from the auxiliary fuel supply means
Ejection means for ejecting, the ejection means comprises:
Near the bottom of the combustion chamber, along the inner wall of the combustion chamber.
Is provided so that the combustion gas can sufficiently rise,
The air from the blower or the auxiliary fuel supply means
The auxiliary fuel in the center of the lower bottom of the combustion chamber.
And blows the combustion gas along the inner wall of the combustion chamber.
And raise the highest temperature part during combustion to the vicinity of the lower bottom part.
It is locked in. The incinerator of the present invention
The temperature of the combustion chamber where the gas is burned and the temperature of the combustion chamber are detected.
Room temperature detecting means, and the detected room temperature detecting means.
Supply of the burnable material to the combustion chamber based on the temperature obtained.
Supply control means for controlling the temperature of the combustion chamber portion;
Room temperature raising means for causing the room temperature detection means,
Detects the temperature of the combustion chamber that has risen by the room temperature rise means
And the supply control means determines that the detected value of the room temperature detection means is
If the set value is not exceeded, supply of the burnable material to the combustion chamber
Dispensing, and the room temperature raising means stores auxiliary fuel.
Means for burning said auxiliary fuel,
A blower for raising the temperature of the combustion chamber and supplying air
And an auxiliary fuel supplier for supplying the auxiliary fuel.
A stage and the air or the air supplied from the blower.
Ejecting the auxiliary fuel supplied from the auxiliary fuel supply means
Ejection means for ejecting the fuel, wherein the ejection means
Near the lower bottom in the chamber, along the inner wall of the combustion chamber
The lower base is provided so that the combustion gas can rise sufficiently.
Temperature near the center is higher than the temperature in the center of the combustion chamber
The temperature in the center is the temperature near the top of the combustion chamber.
So that the burnable material is burned to a higher temperature than
The air or auxiliary fuel supply means from the blower
Jets the auxiliary fuel from
The lower bottom through the center of the horizontal section of the lower part of the combustion chamber
To generate air or auxiliary fuel flow toward the
The gas rises along the inner wall of the combustion chamber.
You. In the incinerator according to the present invention, the jetting means includes
An air passage for flowing the air from the lower;
Auxiliary fuel for flowing the auxiliary fuel from the auxiliary fuel supply means
Material passage, provided above a central portion of the lower bottom portion,
The blower connected to the air passage toward the lower bottom
Air openings for blowing said air from
And connected to the auxiliary fuel passage toward the lower bottom
For ejecting the auxiliary fuel from the auxiliary fuel supply means.
A plurality of auxiliary fuel openings on the bottom surface
An air-assisted fuel supply comprising an annular double tube
Things. In the incinerator of the present invention, the jetting means
Is an air passage for flowing the air from the blower
Flowing the auxiliary fuel from the auxiliary fuel supply means.
An auxiliary fuel passage, and the air passage or the auxiliary fuel passage.
And connected to the inner wall of the combustion chamber
From the blower towards the lower bottom
Gas or the auxiliary fuel from the auxiliary fuel supply means.
Multiple air openings and auxiliary fuel for each spout
Consisting of a plurality of protrusions each having an opening on the bottom surface
And an air auxiliary fuel supply unit. Of the present invention
In the incinerator, the air auxiliary fuel supply unit is detachable
It is. The incinerator according to the present invention is characterized in that the room temperature
Control the blower according to the result to control the air supply
Air supply control means for controlling
You. The incinerator according to the present invention, the detection result of the room temperature detection means
Therefore, the auxiliary fuel supply means is controlled to control the auxiliary fuel supply amount.
Further comprising auxiliary fuel supply amount control means for controlling
Things. The incinerator according to the present invention includes: a combustion chamber in which a substance to be burned is burned; room temperature detecting means for detecting a temperature of the combustion chamber; and a combustion chamber based on the temperature detected by the room temperature detecting means. And supply control means for controlling the supply of the burnable material.

[0011] incinerator of the present invention further comprises a room temperature raising means for raising the temperature of the combustion chamber portion, said room temperature detecting means detects the temperature of the combustion chamber has risen by the room temperature raising means, said The supply control means is configured not to permit supply of the burnable material to the combustion chamber when the detected value of the room temperature detection means does not exceed a set value.

[0012] In the incinerator of the present invention, the supply control means, after the detected value of the room temperature detecting means permits the supply of the combustion products into the combustion chamber exceeds the set value, the detected value is the When the value falls below the set value, the supply of the burnable material to the combustion chamber is stopped until the detected value exceeds the set value again.

[0013] In the incinerator of the present invention, the supply control means may continuously be combustibles in the combustion chamber or intermittently can be supplied, and the combustion products which can adjust the supply amount or supply rate A supply unit; and a control unit for controlling a supply amount or a supply speed of the burnable material supplied from the burnable material supply unit.

[0014] In the incinerator of the present invention, the room temperature raising means includes means for accommodating the auxiliary fuel, and is configured to raise a temperature of the combustion chamber by burning the auxiliary fuel.

[0015] In the incinerator of the present invention, the room temperature raising means includes a blower for supplying air, and an auxiliary fuel supply means for supplying auxiliary fuel, air or the auxiliary fuel supplied from the blower Jetting means for jetting out the auxiliary fuel supplied from the supply means, wherein the jetting means is provided with a sufficient amount of combustion gas along the inner wall of the combustion chamber near the lower bottom in the combustion chamber. The combustion chamber is provided so as to be able to ascend, and blows air from the blower or the auxiliary fuel from the auxiliary fuel supply means toward a central portion of the lower bottom portion of the combustion chamber portion to thereby discharge combustion gas to an inner wall of the combustion chamber portion And the highest temperature portion during combustion is confined in the vicinity of the lower bottom portion. In incinerator of the present invention, the room temperature rises means,
Blower for supplying air, auxiliary fuel supply means for supplying the auxiliary fuel, and ejection means for ejecting the air supplied from the blower or the auxiliary fuel supplied from the auxiliary fuel supply means The jetting means is provided near the lower bottom in the combustion chamber so that the combustion gas can sufficiently rise along the inner wall of the combustion chamber, and the temperature near the lower bottom is set to Air from the blower or the auxiliary fuel so as to burn the object to be burned such that the temperature is higher than the temperature of the central portion of the combustion chamber portion and the temperature of the central portion is higher than the temperature near the upper portion of the combustion chamber portion. The auxiliary fuel from the supply means is jetted toward the lower bottom portion to generate an air flow or an auxiliary fuel flow toward the lower bottom portion through a central portion of a horizontal section at a lower portion of the combustion chamber portion to generate a combustion gas. It is configured to increase along the inner wall of the combustion chamber portion.

[0016] In the incinerator of the present invention, the ejection means includes an air passage for the flow of air from said blower,
An auxiliary fuel passage for allowing the auxiliary fuel from the auxiliary fuel supply means to flow, and air blown out from the blower toward the lower bottom portion connected to the air passage and provided above a central portion of the lower bottom portion. And a plurality of auxiliary fuel openings for ejecting the auxiliary fuel from the auxiliary fuel supply means connected to the auxiliary fuel passage toward the lower bottom portion. And an air-assisted fuel supply unit comprising an annular double pipe having an air auxiliary fuel supply unit. In incinerator of the present invention, the jet means,
An air passage for flowing air from the blower; an auxiliary fuel passage for flowing the auxiliary fuel from the auxiliary fuel supply means; and an inner wall of the combustion cylinder connected to the air passage or the auxiliary fuel passage, respectively. A plurality of air openings and a plurality of auxiliary fuel openings for ejecting air from the blower or the auxiliary fuel from the auxiliary fuel supply means toward the lower bottom, respectively, on the lower surface. And an air-assisted fuel supply unit comprising a protrusion of

[0017] In the incinerator of the present invention, the air assist fuel supply unit is detachable.

[0018] In the incinerator of the present invention, and further comprising an air supply amount control means for controlling the air supply amount by controlling the blower in accordance with a detection result of the room temperature detecting means.

[0019] In the incinerator of the present invention, and further comprising an auxiliary fuel supply amount control means for controlling the auxiliary fuel supply amount by controlling the auxiliary fuel supply means according to the detection result of the room temperature detecting means.

[0020] The incinerator according to the present invention comprises: a combustion chamber in which a substance to be burned is burned; room temperature increasing means for increasing the temperature of the combustion chamber; and room temperature detecting means for detecting the temperature of the combustion chamber. Supply control means for controlling the supply of the burnable material to the combustion chamber based on the temperature detected by the room temperature detecting means and controlling the room temperature increasing means,
The supply control means raises the temperature of the combustion chamber before starting the supply of the burnable material to the combustion chamber, and the temperature of the combustion chamber is subsequently supplied to the combustion chamber. After the temperature of the material to be burned is raised to a temperature at which it can be substantially completely burned, the supply of the material to be burned is controlled to be started.

[0021] In the incinerator of the present invention, the supply control means, after starting the supply of the combustion products into the combustion chamber, the temperature of the combustion chamber is made substantially complete combustion of the object to be combustion product When the temperature falls below a sufficient level, the supply of the burnable material to the combustion chamber is controlled to be stopped.

[0022] In the incinerator of the present invention, the room temperature raising means includes means for accommodating the auxiliary fuel to raise the temperature of the combustion chamber by burning the auxiliary fuel, the supply control means, When the temperature of the combustion chamber drops below a temperature sufficient to cause the combustion target to be substantially completely burned after the supply of the combustion target to the combustion chamber is started, the combustion chamber of the combustion target is burned. The auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time, is put into the combustion chamber, and the auxiliary fuel is burned to raise the temperature of the combustion chamber. After the temperature of the combustion chamber has been restored to a temperature sufficient to cause the combustion target to be substantially completely burned, the supply of the combustion target to the combustion chamber is restarted.

[0023] In the incinerator of the present invention, the room temperature raising means includes means for accommodating the auxiliary fuel to raise the temperature of the combustion chamber by burning the auxiliary fuel, the supply control means, When the temperature of the combustion chamber is lower than a temperature sufficient to cause the combustion target to be substantially completely burned while the combustion target is burning in the combustion chamber, the combustion of the combustion target is performed. In parallel with this, an auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time is put into the combustion chamber and the auxiliary fuel is burned to reduce the temperature of the combustion chamber to the temperature of the object to be burned. Is controlled so as to burn the object to be burned while raising the temperature to a temperature sufficient to cause substantially complete combustion.

[0024] In the incinerator of the present invention, the room temperature raising means includes means for accommodating the auxiliary fuel to raise the temperature of the combustion chamber by burning the auxiliary fuel, the supply control means, When the temperature of the combustion chamber is lower than a temperature sufficient to cause the combustion target to be substantially completely burned while the combustion target is burning in the combustion chamber, the supply of the combustion target is performed. Is stopped, an auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time is put into the combustion chamber, and the auxiliary fuel is burned to reduce the temperature of the combustion chamber to the target object. Is controlled to restart the combustion of the object to be burned after the temperature is raised to a temperature sufficient to cause substantially complete combustion.

In the incinerator according to the present invention, the combustion chamber in which the material to be burned is burned, the room temperature detecting means for detecting the temperature of the combustion chamber, and when the detected value of the room temperature detecting means does not exceed the set value. Is provided with means for preventing the supply of the combustibles to the combustion chamber. The method for managing an incinerator according to the present invention , wherein the temperature of an exhaust gas generated from the combustion chamber in which the burnable material or the auxiliary fuel is burned does not exceed a predetermined temperature, so that the burnable material or the burnable material or the fuel to be put into the combustion chamber portion. Controls the amount or rate of supplementary fuel. The incinerator according to the present invention includes: a combustion chamber in which a substance to be burned is burned; a room temperature detecting means for detecting a temperature of the combustion chamber; and a combustion chamber based on the temperature detected by the room temperature detecting means. Supply control means for controlling the supply of the burnable material, and burnable material supply means for supplying the burnable material to the combustion chamber. The burnable material supply means supplies the burnable material to the combustion chamber. The material to be burned before being heated is dried.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An incinerator according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a view showing an incinerator according to one embodiment of the present invention. Part of the incinerator is shown in arbitrary cross section. The incinerator 1 mainly includes a combustion chamber 2 and the combustion chamber 2
An air-assisted fuel supply chamber 6 for supplying air and auxiliary fuel to the combustion chamber 2; a burned-material carry-in chamber 5 for carrying burnable material into the combustion chamber 2; The air-assisted fuel supply chamber 6 and the combustion chamber 2 are connected by an air-assisted fuel introduction pipe 74 composed of a double pipe for introducing air and auxiliary fuel, respectively. Further, the combustion chamber 2 and the dust collection chamber 4 are connected by a smoke exhaust pipe 72.

A control device 12 for controlling the operation of the combustion furnace 1 is provided on the front surface of the air auxiliary fuel supply chamber 6 placed on the base 10. A blower 14 connected to the outer pipe of the air auxiliary fuel introduction pipe 74 and an auxiliary fuel pump connected to the inner pipe of the air auxiliary fuel introduction pipe 74 are provided in the air auxiliary fuel supply chamber 6 behind the control device 12. 15 are provided. Blower 14 and auxiliary fuel pump 1
5 is controlled by the control device 12 to supply air and auxiliary fuel to the combustion chamber 2 via the air auxiliary fuel introduction pipe 74. In this example, the auxiliary fuel supplied from the auxiliary fuel pump 15 is city gas. However, it is not limited to this. The auxiliary fuel may be gaseous or liquid. For example, an oxygen or acetylene gas type may be used.

The combustion chamber section 2 has a lower bottom portion 22 formed on the base 10. The lower bottom part 22 is made of concrete, for example. However, it may be formed of other materials. The upper surface portion of the lower bottom portion 22 has a structure in which the center portion is concave in a hemispherical shape. As a result, the burnable material pieces, liquefied materials, and the like that have fallen from above during the combustion of the burnable material flow into the central portion. Further, the temperature detector 16 is provided near the lower bottom portion 22, in this example, at a position slightly distant from the center of the lower bottom portion 22. The temperature detector 16 is connected to the control device 12. Further, an ignition device 17 is provided near the lower bottom portion 22, in this example, slightly above. The ignition device 17 is also controlled by the control device 12.

An inner combustion cylinder 24 connected to the lower bottom 22 and extending upward is provided. The upper bottom of the tube 24 is the upper plate 25
Is closed by Thus, a substantially closed combustion chamber 30 is formed. In this example, the cross section of the combustion cylinder 24 is circular, but the present invention is not limited to this. A temperature detector 18 is provided above the combustion tube 24, and the temperature detected by the temperature detector 18 is output to the control device 12.

An outer cylinder 32 is provided outside the combustion cylinder 24 so as to be connected to the lower bottom 22 and extend upward. In this way, a gap 42 whose bottom is closed by the lower bottom portion 22 is formed between the inner cylinder 24 and the outer cylinder 32. The outer cylinder 32 is narrowed at an upper portion 34 of the combustion chamber 30. A water vapor discharge cylinder 36 is provided on the narrowed upper part 34.

The water level detector 19 is provided in the gap 42 inside the upper portion 34 of the outer cylinder 32, and detects the water level of the cooling water in the gap 42. The detection result is notified to the control device 12. Cooling water is injected into the gap 42 from the water supply port 21 provided at the upper part of the outer cylinder 32. This water supply 21
Is connected to the water supply via a valve 20. Valve 2
In the case of “0”, the opening and closing thereof are controlled by the control device 12 according to the detection result of the detector 19. Steam generated by heating the cooling water during combustion is discharged from the discharge tube 36. A valve (not shown) is provided between the upper portion 34 of the outer tube 32 and the water vapor discharge tube 36. The valve is opened only when the vapor pressure of the water vapor exceeds a certain value in the gap 42 to release the water vapor to the water vapor discharge tube 36, and is closed when the vapor pressure does not exceed the predetermined value, thereby preventing heat release.

The cooling water injected into the gap 42 from the water supply port 21 is heated during the combustion to become boiling water (hot water or steam). This boiling water is taken out to the outside through a pipe 42a provided below the gap 42, and is used as a heating source that constitutes a part of an absorption type cooling / heating device described later. Since the temperature in the combustion chamber 30 is lower in the lower part than in the upper part, as described later, high-temperature boiling water can be easily taken out from the pipe 42a provided in the lower part of the gap 42.

As shown in FIG. 2, a plurality of air auxiliary fuel supply passages 4 extending vertically along the outer peripheral surface of the inner cylinder 24 are provided.
4 are formed in the gap 42. The air auxiliary fuel supply passage 44 is formed of a double pipe, the outer pipe of which is connected to the outer pipe of the air auxiliary fuel introduction pipe 74 to be supplied with air from the blower 14, and the inner pipe of which is connected to the air auxiliary fuel introduction pipe 74. The auxiliary fuel is supplied from the auxiliary fuel pump 15 while being connected to the inner pipe. Each supply passage 44 is provided with a large number of holes penetrating through the inner cylinder 24 at a portion in contact with the inner cylinder 24, and ejects air and auxiliary fuel toward the center of the combustion chamber 30.

Below the combustion chamber 30, in this example, the lower bottom 2
An ejection portion 26 for ejecting air and auxiliary fuel in contact with the nozzle 2 is formed. The ejection part 26 has a structure shown in FIGS. 4A, 4B and 6A. FIG. 4A shows the ejection part 26 as seen from above, and FIG. 4B shows the ejection part 26 as seen from the lower bottom part 12 side. FIG. 6A is a vertical cross-sectional view showing a main part of the ejection part 26 in an enlarged manner. As is clear from FIGS. 4A and 4B, the ejection portion 26 includes an annular tube 26a and three connecting tubes 26b connected to the tube 26a. The pipe 26a and the pipe 26b are connected, and they are connected to the air-assisted fuel introduction pipe 74.
It is connected to the. The tubes 26a and 26b are respectively
It has a double pipe structure consisting of an outer pipe and an inner pipe. Tube 26a
Is connected to the outer tube of the tube 26b, and the inner tube of the tube 26a is connected to the inner tube of the tube 26b. The outer pipe of the pipe 26b is connected to the outer pipe of the air-assisted fuel introduction pipe 74 to introduce air, and the inner pipe of the pipe 26b is connected to the air-assisted fuel introduction pipe 74.
Auxiliary fuel is introduced by being connected to the inner pipe. The number of connecting pipes is not limited to this. It suffices if the pipe 26a is effectively held and air and auxiliary fuel can be sufficiently supplied.

The diameter of the ring of the annular tube 26a is about the radius of the inner cylinder 24. As is clear from FIG. 4A, no hole is provided above the ejection portion 26. On the other hand, FIG.
As shown in (b), a number of air auxiliary fuel outlets 26c are provided on the side viewed from the lower bottom portion 22. This is to prevent the ejection opening from being blocked when the liquefied burnable material falls from above. However, the more essential reasons will be explained later. As shown in FIG. 6 (a), the air auxiliary fuel injection port 26c is connected to a pipe 26a.
Each of the tubes 26b includes an outer opening 26e formed obliquely inward on the outer surface of the outer tube, and an inner opening 26f similarly formed on the outer surface of the inner tube. Outer mouth 26
e and the inner opening 26f are in such a relationship that the opening surface of the inner opening 26f is located on the extension surface of the opening surface of the outer opening 26e. As a result, the air from the air auxiliary fuel outlet 26c is supplied in a form in which air from the outer pipe and auxiliary fuel from the inner pipe are mixed, and the moment when the mixture is supplied is air, auxiliary fuel. The fuel is accelerated by adding the momentum of each fuel and promoting each other. It will be apparent to those skilled in the art that the ejection section 26 may have other shapes. For example,
As shown by a dotted line in FIG. 4, a tube 26d that crosses the center of the annular tube 26a may be added.

Aluminum is sprayed on the surfaces of the annular pipe 26a and the connecting pipe 26b. When the pipes 26a and 26b are made of iron, the oxidation proceeds due to the heat of combustion, resulting in significant damage. Therefore, aluminum is sprayed to prevent oxidation. However, instead of thermal spraying, ceramic layers may be formed on their surface. In addition, not only the ejection part 26 but also the inner wall of the combustion chamber 30 may be sprayed with aluminum or may be coated with a ceramic layer.

At the center of the combustion chamber 30, the inner cylinder 24 and the outer cylinder 3
2 is provided with an inlet 38 for an object to be burned.
However, in the present embodiment, during normal operation, the burnable material W
Is supplied only from the combustion object carrying-in section 5, and the input port 38 is locked so that the supply of the combustion object W or the auxiliary fuel including the auxiliary agent from the input port 38 is impossible. The to-be-burned object loading chamber 5 will be described later. A smoke exhaust pipe 72 is provided at an upper portion of the combustion chamber 30, and extends from the inner cylinder 24 through the outer cylinder 32 and the wall of the dust collection chamber 4 into the dust collection chamber 4. Note that the smoke exhaust pipe 72 is provided with a cooling means for cooling the temperature of the exhaust gas flowing into the dust collection chamber 4 to 200 ° C. or lower as necessary.

The dust collecting chamber 4 is provided above the air auxiliary fuel supply chamber 6 and is isolated therefrom. Chimney 54
The lower part 52 is inserted deep into the dust collector chamber 4. As a result, heavy soot contained in the smoke exhausted from the smoke exhaust pipe 72 sinks into the dust collector chamber 4, and only hot air is exhausted through the chimney 54. A detection port 58 used for detecting a component or the like of the exhaust gas is provided at an intermediate position of the chimney 54. A temperature detector 18 a is provided near the detection port 58, and a detection result of the temperature detector 18 a is output to the control device 12.

The combustion object carrying-in section 5 includes a hopper 51 for temporarily storing the combustion object W, and a combustion object connected to the hopper 51 for guiding the combustion object W to the combustion chamber 30. The apparatus includes a material supply pipe 52, a screw conveyor 53 provided in the burnable material supply pipe 52, and a motor 54 serving as a drive source of the screw conveyor 53. The screw conveyor 53 has a configuration in which a blade is wound around a shaft in a helical shape. The supply amount of the burnable material W is substantially proportional to the rotation speed of the screw conveyor 53. Therefore, the temperature detectors 16, 18, 18
By controlling the number of revolutions of the screw conveyor 53 in accordance with the remaining amount of the burnable object W in the combustion chamber 30, the combustion state, and the like, which are detected through a, the burnable object W can be supplied quantitatively. it can. Further, the temperature detectors 16, 18, 18
When the temperature inside the furnace (combustion temperature) in the combustion chamber 30, which is mainly detected by the temperature detector 16, does not exceed the set temperature, the screw conveyor 53 is not operated and the combustion chamber 30 burns. The object W is not carried in.
This will be described later. In addition, the communication part between the to-be-burned material supply pipe 52 and the combustion chamber 30 is in a substantially sealed state, and is in a state of being cut off from outside air.

Next, a method of utilizing the boiling water extracted from the pipe 42a will be described with reference to FIG. FIG.
FIG. 2 is a schematic diagram for explaining the principle of the absorption type cooling and heating device. A heat transfer tube 10 through which water passes
1a is provided. 6.5 in the closed container 101
A vacuum state of about mmHg is set. When a water droplet (refrigerant) 101b is dropped on the heat transfer tube 101a, the water droplet 101
b evaporates while removing heat of vaporization from the water in the heat transfer tube 101a, and at this time, the water in the heat transfer tube 101a is cooled.
Thereby, the water in the heat transfer tube 101a is supplied to cold water for cooling. On the other hand, when the concentrated aqueous solution of lithium bromide (absorbing liquid) 104 is dropped into the closed container 101, the water vapor 101d generated by evaporation of the water droplet 101b is absorbed by the concentrated aqueous solution of lithium bromide 104. . The aqueous solution of lithium bromide 104a that has been diluted by absorbing the water vapor 101d is sent by a pump 101c and heated in the regeneration chamber 102 to be separated into water vapor 104b and a concentrated aqueous solution of lithium bromide 104. The water vapor 104b is cooled in the condensing chamber 103 to form a refrigerant liquid 103a.
The water drops dropped from the condensation chamber 103 are the refrigerant 101b. The concentrated aqueous solution of lithium bromide 104 is supplied to the closed vessel 101 and functions as the absorbing liquid again, as described above. From the above, one cycle is completed. In the present embodiment, boiling water taken out from the pipe 42a is used as a heating source in the regeneration chamber 102. In addition, it goes without saying that the boiling water taken out from the pipe 42a can be independently used as warm water for heating.

Next, control of the incinerator 1 will be described.
As shown in FIG. 3, the control device 12 is provided with an air control switch 12a, an ignition switch 12b, and an auxiliary fuel control switch 12c on the front surface. Based on the object to be burned, the user can operate the air control switch 12a and the auxiliary fuel control switch 12c to select an initial air amount and an auxiliary fuel amount for the object.
Further, the ignition device 17 can be operated by the ignition switch 12b to start combustion. At this time, the combustion furnace 1 moves the combustion target W from the target combustion chamber 30 into the combustion chamber 30.
Before the transfer of the fuel into the combustion chamber 30 starts, a predetermined amount of air and auxiliary fuel are charged and burned.
After the temperature is increased and it is confirmed that the material has been heated to the set temperature, the loading of the burnable material W is started. In this case, the set temperature is determined according to the easiness of complete combustion, such as the type, amount, and form (whether or not to be deposited in a lump) of the burnable material W carried in after the heating. . That is,
If the type of the object to be burned W is waste plastic or waste tires, the set temperature may be relatively low, and if the sludge or garbage is used, a relatively high temperature is required. That is,
The set temperature is a temperature at which the entire burnable object W can be completely burned. The above-described confirmation of the heating state is mainly performed by the temperature detector 16 among the two temperature detectors 16 and 18 in the combustion chamber 30. As will be described later, in the incinerator 1 of the present embodiment, the combustion of the to-be-burned object W is performed mainly in the vicinity of the temperature detector 16 (the in-combustion object carrying space) rather than in the vicinity of the temperature detector 18. .

The water level in the gap 42 detected by the water level detector 19 provided at an appropriate position above the gap 42 is notified to the controller 12. When the water level drops, the control device 12 opens the valve 20 according to the detection result of the detector 19 and supplies water into the gap 42 via the water supply port 21. Thereby, even if the cooling water in the gap 42 decreases during combustion, the combustion chamber 3
0 does not overheat, and the life of the combustion furnace 1 can be extended.

A temperature detector 16 provided near the lower bottom 12 of the combustion chamber, a temperature detector 18 provided above the combustion chamber 30, and a temperature detector provided near the detection port 58 of the chimney 54. The temperature detected by the heater 18a is also controlled by the control device 1.
2 is informed. The control device 12 controls the blower 14 and the auxiliary fuel pump 15 according to the detected temperature,
The amount of air and the amount of auxiliary fuel supplied to the ejection section 26 via the air auxiliary fuel introduction pipe 74 are adjusted to be optimal. The number of temperature detectors is not limited to this, and more temperature detectors may be connected.

Next, the operation of the incinerator according to the present invention will be described. First, the air control switch 12a and the auxiliary fuel control switch 12c are turned on regardless of the type of the object to be burned, instead of the newspaper or the like or the combustion aid used in the conventional incinerator, and the combustion chamber 30 is turned on. The air and the auxiliary fuel are supplied, and the ignition switch 12b is turned on to ignite the auxiliary fuel. Then, the temperature in the combustion chamber 30 starts to rise due to the combustion of the auxiliary fuel. At this time, the temperature is mainly detected by the temperature detector 16, and when the detected value of the temperature detector 16 exceeds a set value (for example, 900 ° C.), the controller 12 starts driving the motor 54. Conversely, when the detected value of the temperature detector 16 does not exceed the set value, the control device 12 does not start driving the motor 54 and does not start loading the burned object W into the combustion chamber 30. Motor 5
When the driving of the combustion object 4 is started, the conveyance of the combustion object W from the combustion object introduction chamber 5 is started. By operating as described above at the start of carrying in the burnable material W, the burnable material W
Immediately burns at a high combustion temperature immediately after the start of the combustion, thereby preventing the occurrence of an incomplete combustion state. Further, for the reasons described below, when the control device 12 stops carrying in the burnable material W without the detected value of the temperature detector 16 exceeding the set value, the device may malfunction or work. There is no danger that the burnable object W is thrown in from another part (for example, an inlet for putting in the auxiliary fuel for increasing the temperature of the combustion chamber 30) due to an erroneous operation of the member, causing incomplete combustion. That is, as described above, the inlet for the auxiliary fuel is formed in the ejection part 26 and the air auxiliary fuel supply pipe 44 connected to the air auxiliary fuel supply chamber 6, and the burnable substance W is carried in. This is because it is a completely different part from the combustion object carrying-in room part 5 used in the process. In addition, each of these transport means is also a blower 14, an auxiliary fuel pump 1
5. Since the screw conveyor 53 is different from the screw conveyor 53, there is no possibility that the burnable material W is erroneously carried in from a portion other than the burnable material loading chamber 5. In consideration of the fact that the temperature in the combustion chamber 30 temporarily drops when the burnable material W is carried in, it is impossible to secure a combustion temperature of 900 ° C. or more at the start of combustion of the burnable material W. The carrying-in start temperature (set temperature) of the combustible material W may be a temperature obtained by adding a fixed value to 900 ° C. instead of just 900 ° C.

When the detected value of the temperature detector 16 falls below the set value mainly after the combustion of the burnable object W is started as described above, the control device 12 controls the motor 54.
Is stopped, and the carry in of the burnable material W is stopped. As a result, the incombustible substance W carried in after that is prevented from incompletely burning at a low combustion temperature. At the same time, the control device 12 increases the air supply amount and the auxiliary fuel supply amount to reduce the temperature in the combustion chamber 30 in order to prevent the in-combustion target W being combusted in the combustion chamber 30 at that time from incompletely burning. The blower 14 and the auxiliary fuel pump 15 are controlled so as to be raised. In this case, the control device 12 may control the burnable object W according to the type of the burnable object W burning at that time.
The blower 14 and the auxiliary fuel pump 15 are controlled such that the detection value of the temperature detector 16 rises to a temperature at which the fuel is completely burned. The auxiliary fuel is supplied to the combustion chamber 3 during normal operation.
Even if the temperature in 0 falls, what can be completely burned easily is used.

The following operation may be performed instead of the above operation. That is, when the detection value of the temperature detector 16 falls below the set value, the control device 12
In addition to stopping the transport of the incombustible material W, the combustion of the material W to be burned in the combustion chamber 30 at that time may be temporarily stopped to immediately eliminate the incomplete combustion state. Then, after the heating until the detection value exceeds the set value is completed, the carrying-in of the to-be-burned object W may be restarted, and the burning of the once-stopped to-be-burned object W may be restarted.

During combustion, the control device 12 controls the water level detector 19
The water level is monitored by the output from. The control device 12
Monitors the outputs of the temperature detectors 16 and 18 and increases the air supply when the actual combustion temperature is lower than the expected combustion temperature based on the air supply set based on the material to be burned. Control. In parallel with or instead of this operation, the auxiliary fuel supply amount is increased when the actual combustion temperature is lower than the expected combustion temperature from the auxiliary fuel supply amount set based on the combustion target. The auxiliary fuel pump 15 is controlled as described above. Thus, the object to be burned can be completely burned at the optimum temperature. At the same time, the combustion temperature is not unnecessarily increased, so that the damage to the combustion chamber 30 can be reduced, and the generation of smoke and harmful exhaust gas can be suppressed as described later.

Further, the control device 12 includes a temperature detector 18a
Is monitored, and when the actual temperature of the exhaust gas is higher than the temperature near the exhaust pipe (chimney 54) of the exhaust gas expected from the air supply amount or the auxiliary fuel supply amount set based on the burnable material, The blower 14 or the auxiliary fuel pump 15 is controlled so that the air supply amount or the auxiliary fuel supply amount is reduced to lower the gas temperature. If the reason why the temperature of the exhaust gas is too high is due to the amount of the material to be burned W in the combustion chamber 30, the control device 12 determines whether or not the temperature of the material to be burned is 5
Is controlled so as to reduce the supply amount or the supply speed of the burnable material W carried in from the vehicle. Thereby, generation of harmful gases (such as dioxins) can be suppressed.

FIG. 5 shows the state of combustion in the combustion chamber at this time. An object to be burned, such as waste plastic, located above the ejection section 26 is liquefied by combustion heat, falls to the lower bottom portion 22, flows to the center portion, and accumulates there. Debris of the burnable material such as waste tires also falls to the lower bottom 22. In this case, the spout 2
Since there is no hole in the upper part of the annular pipe 26a and the communication pipe 26b of No. 6, the hole is not closed by the hole.

At this time, since a large amount of air or auxiliary fuel is jetted from the jetting portion 26 toward the lower bottom portion 22, air flows or auxiliary fuel flows from above toward the lower bottom portion 22 near the center of the lower bottom portion 22. Flow occurs. In this manner, air or auxiliary fuel is sufficient in the lower bottom portion 12, complete combustion is performed, and the combustion temperature is reduced from 1200 ° C to 1 ° C.
It becomes as high as 400 ° C. Thus, the lower bottom portion 22 and its vicinity in the combustion chamber portion 2 are connected to the room temperature raising means (the blower 14, the auxiliary fuel pump 15, and the air auxiliary fuel introduction pipe 7).
4 and the ejection part 26) constitute a room temperature rising space in which the temperature is particularly raised. Further, the burnable material W carried in from the burnable material loading chamber 5 through the burnable material supply pipe 52.
Is carried into the lower bottom portion 22 and its vicinity in the combustion chamber portion 2, and the object to be burned W is mainly burned in the lower bottom portion 22 and its vicinity as described above. In this sense, the lower bottom portion 22 in the combustion chamber portion 2
And the vicinity thereof constitute a combustion object carrying space. As described above, in the present embodiment, in the combustion chamber section 2, the room temperature rising space and the combustion object carrying space are both formed in the lower bottom portion 22 and the vicinity thereof. In addition to being able to minimize it, it is possible to realize energy saving, reduction of damage to the combustion chamber 30, and reduction of exhaust gas amount due to its excellent thermal efficiency.

Due to the flow of air or auxiliary fuel toward the lower bottom 22, the combustion gases at the lower bottom 22
Rises up along the inner wall of the. At this time, the rising airflow is cooled by the cooling water in the gap 42. By continuously ejecting the air or the auxiliary fuel from the ejection section 26, a part of the rising flow is directed to the lower bottom portion 12 again. In this way, convection of air (combustion gas) occurs around the ejection section 26. In particular, since the air auxiliary fuel outlet 26c of the jetting part 26 is formed obliquely inward as described above, the air or auxiliary fuel is jetted obliquely downward, so that convection of air is more likely to occur. be able to. The remaining part of the rising airflow is discharged to the dust collection chamber 4 via the smoke exhaust pipe 72.

In the conventional incinerator, air (combustion gas) rises upward from the center of the combustion chamber. Thus, in the conventional incinerator, convection is not generated, or even if it is generated, the direction of the convection is completely opposite to that of the present invention.

In the above sense, the blower 14, the auxiliary fuel pump 15, the air auxiliary fuel introduction pipe 74, and the ejection section 26 function as convection generating means (or member).

In the conventional incinerator, as described above, the lower part of the combustion chamber 30 is about 600 ° C., the center part is about 800 ° C., and the upper part is about 1000 ° C., whereas in the present invention, the lower part is about 12 ° C.
The temperature is from 00 to 1400 ° C., about 1000 ° C. in the center and about 850 ° C. in the upper part. Not only are the temperatures increased overall, but their temperature distributions are reversed. In this sense,
The blower 14, the auxiliary fuel pump 15, the air auxiliary fuel introduction pipe 74, and the ejection section 26 function as a combustion temperature reversing means (or member), a combustion temperature control means, or a combustion temperature increasing means.

This is because a sufficient amount of air or auxiliary fuel is supplied from the ejection section 26 and the complete combustion section is confined in the vicinity of the lower bottom section 22, which is completely different from the conventional combustion. In this sense, the blower 14, the auxiliary fuel pump 15, the air auxiliary fuel introduction pipe 74, and the ejection section 26 are confining means (or members) for enclosing the highest temperature portion during combustion in the vicinity of the lower bottom portion 22. Functioning as

Next, the results of tests on exhaust gas and the like when waste plastics are charged at 17 kg and burned using the incinerator according to the present invention will be shown. The results of the test were as follows.

Dioxin (PCDDs) 0.07 ng / m ³ N Dibenzofuran (PCDFs) 0.28 ng / m ³ N Dioxins total 0.35 ng / m ³ N Dust concentration 9.4 mg / m ³ N monoxide Carbon concentration 20 ppm

The test results of exhaust gas and the like when about 30 kg of synthetic rubber and raw rubber are burned are shown.

The test results were as follows. Nitrogen oxide 180 V / Vppm Sulfur oxide 0.36 m ³ N / h Hydrogen chloride 120 mg / m 3

As is evident from the above, the standards concerning the concentrations of carbon monoxide and dioxin in exhaust gas, which are stipulated in the Waste Management Law and the Air Pollution Control Law issued on August 29, 1997. Has been greatly cleared. In addition, as described above, the provision of the ejection section 26, the control device 12, and the like allow the temperature of the combustion gas in the combustion chamber and the combustion gas flowing into the dust collector specified in the enforcement order. The standards for temperature are also cleared.

Further, the emission of nitrogen oxides and sulfur oxides is very small. Nitrogen oxides are generated during combustion, and are more likely to be generated as the combustion temperature increases.
However, in order to completely burn the incineration, it is desirable to perform high-temperature combustion. Thus, nitrogen oxides and complete combustion are opposite.

However, in the present invention, the incinerated material is completely burned in the high-temperature portion enclosed near the lower bottom portion 22. Since the temperature is lower in the upper part of the combustion chamber 30, it is considered that the nitrogen oxides generated in the high temperature part are attached to or absorbed by the incineration during combustion, and the emission amount is reduced. In addition, since complete combustion is performed in a high-temperature part, there is little residual sand and soot contained in smoke exhaustion is also reduced.

Next, a modification of the incinerator according to the present invention will be described with reference to FIG. Also, tubes 26a and 26
3b, a third pipe may be provided further inside the inner pipe to form a triple pipe structure, and cooling water may flow through the third pipe. As a result, the tubes 26a and 26b are cooled, and deterioration and damage due to high-temperature combustion can be reduced, and an accident due to excessive heating of the auxiliary fuel in the inner tube can be prevented.

As shown in FIGS. 7 (a) and 7 (b), the ejection portion is replaced by the combustion tube 2 instead of the tubes 26a and 26b.
4 may be a plurality of protrusions 82 provided on the lower side wall. In the examples shown in these figures, four protrusions are provided. The protrusion 82 is connected to the air auxiliary fuel introduction pipe 74. The tip of the protrusion 82 reaches a position approximately half the radius of the combustion cylinder 24 in a direction opposite to the radial direction. A large number of air auxiliary fuel outlets 82c are provided at a portion facing the lower bottom 22 of each projection 82, and the lower bottom 2
Air or supplementary fuel is ejected toward the nozzle 2. As a result, the same effect as in the above example can be achieved. The upper portion of the protrusion 82 is connected to the gap 42 and is cooled by cooling water. In addition, as shown by the arrow in FIG. 7A, the air flow and the auxiliary fuel flow can be swirled by forming the air auxiliary fuel outlet 82c obliquely to the left in the figure. .

Next, another modified example of the ejection section 26 will be described with reference to FIGS. 8 (a) and 8 (b). In this example,
Three connecting pipes 96b extending in the horizontal direction and an annular pipe 96a
Consists of The communication pipe 96b is connected to the air auxiliary fuel introduction pipe 74. 96 g of asbestos is wound around the tip of each connecting pipe 96b. In addition, an opening 92 connected to the air auxiliary fuel introduction pipe 74 is provided on the inner wall of the combustion tube 24. A receiving portion 94 is formed so as to surround about half of the opening 92, and has a structure for receiving each communication tube 96b.

Similar to the tubes 26a and 26b, the tubes 96a and 96b are provided with a large number of air auxiliary fuel injection ports (not shown). The distal end of each connecting tube 96b is a receiving portion 94.
And the auxiliary fuel pump 1
The air or auxiliary fuel supplied from 5 is jetted from the jet ports through the opening 92. The connection between the opening 92 and the connecting pipe 96b poses a problem. However, since the pipes 96a and 96b are also provided with ejection ports, the connection does not need to be so strict. Therefore, the connection problem can be solved by wrapping 96 g of asbestos around the end of the connecting tube 96 b. Further, by winding the asbestos 96g, the connecting pipe 96b can be prevented from being fixed to the receiving portion 94. In this way, the ejection part can be detached and replaced if necessary.

As described above, it is desirable that the annular pipe of the jetting portion has a diameter about the radius of the combustion cylinder in this example.
If the diameter of the annular tube is too small, the air flow toward the lower bottom is localized, which is not desirable. Conversely, if the diameter is too large, an upward airflow tends to occur at the center of the combustion furnace. Therefore, when the radius of the combustion cylinder is large, the convection can be efficiently generated by providing a plurality of annular tubes concentrically.

In the above-described embodiment, a screw conveyor type is used as the to-be-burned material loading chamber 5, but it is a matter of course that the to-be-burned material supply means is not limited to this type. For example, by using the advantages of a rotary kiln, the material to be burned is heated (preheated) in a rotary cylinder before it is supplied to the combustion chamber, and the moisture contained in the material to be burned (especially sludge, garbage, etc.) May be dried and evaporated. Further, since the material to be burned can be preheated, it is possible to suppress a temporary decrease in the temperature in the furnace when it is supplied to the combustion chamber.

Further, with respect to the air supplied from the blower 14 through the outer pipe of the air auxiliary fuel introduction pipe 74 and the outer pipe of the pipe 26b to below the combustion chamber 30, the density of the air is increased (to prevent the air from expanding). Increase the air supply efficiency)
By applying the means, the combustion efficiency can be further increased. That is, a function equivalent to an intercooler generally used for an internal combustion engine is realized. Although a specific configuration is not particularly limited, for example, a heat radiating unit (not shown) may be provided on the back (the air intake side) of the blower 14. The heat dissipating part is provided with a meandering metal pipe within an area of the same size as the back of the blower 14, and the metal pipe is connected in series between the valve 20 and the water supply port 21. Is done. When tap water is guided to the metal pipe of the heat radiating section via the valve 20, the outer surface of the metal pipe is cooled. When the blower 14 is operated, the cool air discharged from the outer surface of the metal tube is taken in, and the air having the increased density is supplied toward the air auxiliary fuel introduction tube 74 side, and the combustion efficiency in the combustion chamber 30 is increased. Increase. Further, since the cooled air is supplied to the ejection section 26, damage to the ejection section 26 due to high heat can be suppressed. The tap water after passing through the metal pipe is supplied to the gap 42 from the water supply port 21 and used as cooling water in the same manner as in the above embodiment. In the above example, tap water was introduced as the water introduced into the metal pipe.
If the cooling water in 1a (see FIG. 9) is used, the air cooling effect can be further enhanced.

Next, modifications of the combustion cylinder 24 and the outer cylinder 32 shown in FIG. 2 will be described with reference to FIGS. 10 (a) and 10 (b). In this modification, FIG.
0 (a), the combustion cylinder 24H and the outer cylinder 32H
Is formed in a substantially square shape, and the horizontal sectional shape of the combustion chamber 30H is also formed in a substantially square shape. The reason is as follows. That is, when the burnable material W is supplied to the combustion chamber, the burnable material W usually gradually and gradually accumulates from the vicinity of the lower bottom center of the combustion chamber toward the peripheral portion,
The outer contour of the burned object W in the deposited state tends to be close to a circle as shown by a two-dot chain line WM. Therefore, particularly when the amount of the object W to be burned is large, and when the horizontal cross-sectional shape of the combustion chamber is substantially circular, the lower bottom portion of the combustion chamber may be filled with the object W over the entire area. Then, in that case, the entire lower area of the combustion chamber is covered with the burnable material W,
Since the escape of the combustion gas cannot be secured, the internal pressure in the combustion chamber (particularly, the inside of the lump of the material W to be burned) increases, and backfire may occur. Then, with the momentum, for example, there is a possibility that the inlet 38 is unexpectedly opened and a flame is emitted, or the inlet 38 is damaged. Thus, in the present modification, as described above, the planar shape of the lower bottom portion of the combustion chamber 30H is made substantially square, so that the combustion chamber 30H has areas (spaces) S hard to be buried with the burnable material W at its four corners, and the combustion is performed. A gas passage will be secured. For the above reason, it is needless to say that a rectangular shape or another N-sided shape (N is an integer of 3 or more) may be used instead of the square.

At the same time, in this modification, the pressure inside the combustion chamber 30H becomes higher than a certain level because the combustion gas in the combustion chamber 30H is not smoothly discharged from the flue gas pipe 72 in relation to the above points. In case of a rise, the combustion cylinder 24
An opening (not shown) penetrating the outer cylinder 32H from H and an opening / closing door (not shown) for opening and closing the opening are provided. The opening / closing door is opened only when a pressure equal to or higher than a predetermined value is applied. When the door is opened, a U-shaped vertical section is provided to guide the exhaust gas discharged upward to ensure the safety of workers. Are formed. At the four corners of the inner wall of the combustion cylinder 24H, opposing surfaces 24M opposing the center of the combustion chamber 30H are formed, and air and fuel are supplied from an air supplementary fuel supply pipe 44 provided at the back thereof. It is easy to concentrate the supply toward the center of the combustion chamber 30H.

FIG. 10B is an enlarged view of the air fuel supply pipe 44 described above. As shown in FIG.
Radiation fins 24F are provided on the air fuel supply pipes 44 provided at positions in contact with the outer wall of the 4H for the purpose of expanding the contact area with the cooling water accommodated in the gaps 42, respectively. The air supplied to the air fuel supply pipe 44 is effectively cooled by the cooling water by the radiating fins 24F, and the intercooler effect (effect of preventing the expansion of the air and increasing the supply efficiency) by the heat radiating portion is complemented. . Similarly, cooling of the auxiliary fuel supplied into the air fuel supply pipe 44 is also promoted, and accidents such as ignition due to heat from the combustion tube 24H can be suppressed. further,
The heat radiation of the combustion cylinder 24H is also promoted, and the combustion cylinder 24H is prevented from being overheated and damaged.

According to the present invention disclosed above, the following operations are provided. The jetting unit jets air from the blower or auxiliary fuel from the auxiliary fuel supply unit toward the center of the lower bottom. Due to this air flow or auxiliary fuel flow, convection is generated at the lower part of the combustion cylinder from the center of the combustion cylinder to the center of the lower bottom part, and then rises along the side wall of the combustion cylinder. Due to this convection, the highest temperature portion during combustion can be confined in the vicinity of the lower bottom portion. Further, a temperature near the lower bottom portion of the combustion cylinder is higher than a temperature of a central portion of the combustion cylinder,
The object to be burned can be burned such that the temperature at the center is higher than the temperature near the upper bottom. The auxiliary fuel flow burns the object to be burned locally from its surface and gradually burns the inside thereof while the auxiliary fuel itself burns on the way to the object to be burned. Therefore, even if the object to be burned is a lump or the like, it is possible to almost completely burn the inside of the lump at a high combustion temperature.

The annular pipe has a structure for causing the convection. That is, the annular pipe is provided with an air supply port and an auxiliary fuel supply port. However, in order to prevent the supply port from being blocked by the burnable material,
It is not provided on the surface facing the upper bottom.

If the cooling water flows as a plurality of overlapping pipes in the annular pipe, deterioration of the annular pipe due to high heat during combustion can be reduced, and an accident due to overheating of the auxiliary fuel in the pipe can be prevented. Can be prevented. Further, if aluminum is sprayed on the surface or ceramic is coated on the surface, deterioration due to high heat and corrosion due to, for example, chlorine gas can be reduced.

The air passage and the auxiliary fuel passage are divided into a first portion and a second portion, and the first portion is connected to one or more openings provided on the inner wall of the combustion cylinder, and the second portion is connected to the second portion. By receiving the second portion by the receiving portion provided in the opening of the inner wall of the combustion cylinder connected to the annular tube, the annular tube can be detachably held. Thus, even if the annular pipe is deteriorated or corroded, only the annular pipe can be replaced.

The incinerator includes at least one combustion temperature (combustion gas temperature) detector provided in the combustion cylinder and the dust collection chamber, and the blower or the auxiliary fuel supply means according to the detection result of the combustion temperature detector. Control means for controlling the air supply amount or the auxiliary fuel supply amount so that the temperatures of the inside of the combustion cylinder and each part of the dust collection chamber part fall within a predetermined range. It is possible to control the blower or the auxiliary fuel supply means, and in the combustion cylinder, it is possible to realize an optimum reverse temperature distribution for the burned material, and to control the temperature of the exhaust gas flowing into the dust collection chamber. The concentration of dioxins can be reduced.

The following items are disclosed in connection with the above disclosure. (Claim 1) A combustion chamber portion in which an object to be burned is burned, room temperature detecting means for detecting a temperature of the combustion chamber portion, and burning of the combustion chamber portion based on the temperature detected by the room temperature detecting means. An incinerator comprising supply control means for controlling supply of material. (Claim 2) The incinerator according to claim 1, further comprising room temperature increasing means for increasing the temperature of the combustion chamber, wherein the room temperature detecting means detects the temperature of the combustion chamber increased by the room temperature increasing means. An incinerator wherein the supply control means does not permit the supply of the burnable material to the combustion chamber when the detected value of the room temperature detecting means does not exceed a set value. (Claim 3) In the incinerator according to claim 3, the supply control means sets the detection value after permitting the supply of the burnable material to the combustion chamber when the detection value of the room temperature detection means exceeds a set value. An incinerator for preventing the supply of the material to be burned to the combustion chamber until the detected value exceeds the set value again when the measured value falls below the set value. (Claim 4) In the incinerator according to clause 4, the supply control means is capable of continuously or intermittently supplying the combustible to the combustion chamber, and capable of adjusting the supply amount or the supply speed. An incinerator comprising: a combustion product supply unit; and a control unit for controlling a supply amount or a supply speed of the combustion target supplied from the combustion target supply unit. (Item 5) The incinerator according to item 2, wherein the room temperature increasing means has means for storing auxiliary fuel, and increases the temperature of the combustion chamber by burning the auxiliary fuel. (Claim 6) In the incinerator according to clause 5, the room temperature increasing means includes a blower for supplying air, an auxiliary fuel supply means for supplying the auxiliary fuel, and air supplied from the blower or the air supplied from the blower. Jetting means for jetting the auxiliary fuel supplied from the auxiliary fuel supply means, wherein the jetting means is provided near the lower bottom portion in the combustion chamber portion, and the combustion gas is supplied along the inner wall of the combustion chamber portion. The combustion chamber is provided so as to be able to ascend sufficiently and ejects air from the blower or the auxiliary fuel from the auxiliary fuel supply means toward a central portion of the lower bottom portion of the combustion chamber to discharge combustion gas to the combustion chamber. An incinerator which rises along the inner wall of the incinerator and encloses the highest temperature portion during combustion near the lower bottom. (Claim 7) In the incinerator according to clause 5, the room temperature increasing means includes a blower for supplying air, an auxiliary fuel supply means for supplying the auxiliary fuel, and air supplied from the blower or the air supplied from the blower. Jetting means for jetting the auxiliary fuel supplied from the auxiliary fuel supply means, wherein the jetting means is provided near the lower bottom portion in the combustion chamber portion, and the combustion gas is supplied along the inner wall of the combustion chamber portion. So that the temperature near the lower bottom is higher than the temperature at the center of the combustion chamber and the temperature at the center is higher than the temperature near the top of the combustion chamber. The air from the blower or the auxiliary fuel from the auxiliary fuel supply means is jetted toward the lower bottom so as to burn the object to be burned, and passes through the center of the horizontal section at the lower part of the combustion chamber. Above said An incinerator which generates a flow of air or auxiliary fuel toward the bottom to raise combustion gas along the inner wall of the combustion chamber. (Item 8) In the incinerator according to item 6 or 7, the jetting means includes an air passage for flowing air from the blower, and an auxiliary fuel passage for flowing the auxiliary fuel from the auxiliary fuel supply means. Provided above a central portion of the lower bottom portion, connected to the air passage, and connected to the plurality of air openings for ejecting air from the blower toward the lower bottom portion and the auxiliary fuel passage, Incineration comprising: an air auxiliary fuel supply section comprising an annular double pipe having a plurality of auxiliary fuel openings for ejecting the auxiliary fuel from the auxiliary fuel supply means toward a lower bottom, and an annular double pipe each having a lower surface. Furnace. (Item 9) In the incinerator according to item 6 or 7, the jetting means includes an air passage for flowing air from the blower, and an auxiliary fuel passage for flowing the auxiliary fuel from the auxiliary fuel supply means. Connected to the air passage or the auxiliary fuel passage, respectively, attached to the inner wall of the combustion cylinder, and for ejecting air from the blower or the auxiliary fuel from the auxiliary fuel supply means toward the lower bottom portion, respectively. And an air supplementary fuel supply section comprising a plurality of protrusions each having a plurality of air openings and an auxiliary fuel opening on a lower surface. (Item 10) The incinerator according to item 8 or 9, wherein the air-assisted fuel supply unit is detachable. (Item 11) The incinerator according to any one of Items 6 to 10, further comprising air supply amount control means for controlling the blower in accordance with a detection result of the room temperature detection means to control an air supply amount. Furnace. (Item 12) In the incinerator according to any one of Items 6 to 10, an auxiliary fuel supply amount control means for controlling the auxiliary fuel supply means to control an auxiliary fuel supply amount in accordance with a detection result of the room temperature detecting means. An incinerator further comprising: (Claim 13) Detected by the combustion chamber in which the material to be burned is burned, room temperature increasing means for increasing the temperature of the combustion chamber, room temperature detecting means for detecting the temperature of the combustion chamber, and the room temperature detecting means. Supply control means for controlling the supply of the material to be burned to the combustion chamber portion based on the temperature and controlling the room temperature raising means, wherein the supply control means comprises:
The temperature of the combustion chamber is increased before the supply of the substance to the combustion chamber is started, and the temperature of the combustion chamber is substantially equal to the temperature of the substance to be subsequently supplied to the combustion chamber. An incinerator that controls so as to start supplying the burnable material after the temperature has increased to a temperature at which complete combustion is possible. (Item 14) In the incinerator according to item 13, after the supply of the material to be burned to the combustion chamber is started, the supply control means causes the temperature of the combustion chamber to substantially completely burn the material to be burned. An incinerator that controls so as to stop the supply of the burnable material to the combustion chamber when the temperature falls below a sufficient temperature. (Item 15) In the incinerator according to item 13, the room temperature increasing means has means for storing auxiliary fuel, and the auxiliary fuel is burned to raise the temperature of the combustion chamber, and the supply control means is provided. When the temperature of the combustion chamber falls below a temperature sufficient to substantially completely burn the object to be burned after the supply of the object to be burned to the combustion chamber is started,
The supply of the combustion target to the combustion chamber is stopped, and auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time is put into the combustion chamber to burn the auxiliary fuel. After the temperature of the combustion chamber is raised to a temperature sufficient to cause the combustion target to substantially completely burn the combustion target, the supply of the combustion target to the combustion chamber is performed. An incinerator that is controlled to restart. (Item 16) In the incinerator according to item 13, the room temperature increasing means has means for storing auxiliary fuel, and the auxiliary fuel is burned to increase the temperature of the combustion chamber, and the supply control means is provided. When the temperature of the combustion chamber is lower than a temperature sufficient to cause the combustion target to be substantially completely burned while the combustion target is burning in the combustion chamber, the combustion target is In parallel with the combustion of the combustion chamber, auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time is put into the combustion chamber, and the auxiliary fuel is burned to reduce the temperature of the combustion chamber. An incinerator that controls the combustion of the burned object while increasing the temperature to a temperature sufficient to substantially completely burn the burned material. (Item 17) In the incinerator according to item 13, the room temperature raising means includes means for storing auxiliary fuel, and the auxiliary fuel is burned to raise the temperature of the combustion chamber, and the supply control means When the temperature of the combustion chamber is lower than a temperature sufficient to cause the combustion target to be substantially completely burned while the combustion target is burning in the combustion chamber, the combustion target is Is stopped, auxiliary fuel that can be substantially completely burned at the temperature of the combustion chamber at that time is put into the combustion chamber, and the auxiliary fuel is burned to reduce the temperature of the combustion chamber. An incinerator that controls so that the supply of the burnable material is restarted after the temperature of the burnable material is raised to a temperature sufficient to cause substantially complete combustion. (Claim 18) The combustion chamber in which the material to be burned is burned, the room temperature detecting means for detecting the temperature of the combustion chamber, and if the detected value of the room temperature detecting means does not exceed a set value, the combustion chamber is started An incinerator provided with means for preventing supply of burnable material that does not permit supply of the burnable material. (Claim 19) The amount or input of the combustible or auxiliary fuel into the combustion chamber so that the temperature of the exhaust gas generated from the combustion chamber in which the combustible or the auxiliary fuel is burned does not exceed a predetermined temperature. How to manage incinerators that control speed. (Claim 20) A combustion chamber in which an object to be burned is burned, room temperature detecting means for detecting the temperature of the combustion chamber, and the combustion in the combustion chamber based on the temperature detected by the room temperature detecting means. A supply control unit for controlling the supply of the substance; and a combustible substance supply unit for supplying a combustible substance to the combustion chamber, wherein the combustible substance supply means is provided before the supply to the combustion chamber. Is dried by heating.

[0080]

As described above, according to the present invention, by controlling the supply of the burnable material to the combustion chamber based on the temperature of the combustion chamber, for example, immediately after the start of operation of the incinerator, When the temperature of the section is not sufficiently increased, it is possible to prevent the incomplete combustion due to the supply of the burnable material beforehand. That is, when the temperature of the combustion chamber has not risen to a temperature (set value) sufficient for the burnable material to substantially completely burn, the supply of the burnable material is stopped, and once the burned material exceeds the set value. When the temperature also drops below that, the supply of burnable substances is stopped, and the temperature is increased by adding auxiliary fuel to prevent incomplete combustion. Thereby, the concentration of dioxins and the like in the exhaust gas can be reduced. In addition, the convection reverse to that of the conventional incinerator can be generated by ejecting air or auxiliary fuel toward the lower bottom of the combustion tube. As a result, it is possible to confine the high temperature part of the combustion near the lower bottom, and it is possible to almost completely burn the object to be burned near the lower bottom. Because of complete combustion, the concentration of dioxins and the like in the exhaust gas can be reduced. In addition, there is very little residual sand, and there is little soot in the smoke. Further, even if the object to be burned is in the form of a lump or the like, it can be completely burned regardless of the amount and type of the object to be burned. Therefore, there is little problem of securing a garbage disposal site, and the installation place of the incinerator is not selected. Furthermore, although it may be because the high temperature portion is confined near the lower bottom, the amount of harmful substances such as nitrogen oxides and chlorine oxides is very small, and the incinerator is environmentally friendly.

[Brief description of the drawings]

FIG. 1 is a front view showing an incinerator according to an embodiment of the present invention.

FIG. 2 is a plan view showing a cross section of a combustion chamber of the incinerator shown in FIG.

FIG. 3 is a diagram showing a control system of the incinerator shown in FIG.

FIG. 4 is a view showing an ejection part shown in FIG. 1;
(A) is the figure seen from the upper bottom part, (b) is the figure seen from the lower bottom part.

FIG. 5 is a diagram showing a state when a burnable material is burned in the incinerator shown in FIG. 1;

FIG. 6A is an enlarged longitudinal sectional view showing a main part of the ejection section shown in FIG. 1, and FIG. 6B is a view showing a modified example thereof.

FIGS. 7A and 7B show an incinerator having a protruding portion instead of an annular tube as a modified example of the jetting portion shown in FIG. 1, wherein FIG. 7A is a longitudinal sectional view showing a main portion thereof, and FIG. FIG.

FIG. 8 is a view showing a characteristic portion of an incinerator in which an annular pipe portion is configured to be detachable.

FIG. 9 is a schematic diagram for explaining the principle of an absorption-type water heater.

10A is a plan sectional view showing a modification of the combustion chamber of the incinerator, and FIG. 10B is an enlarged view of the air fuel supply pipe shown in FIG.

FIG. 11 is a view showing a conventional incinerator.

[Explanation of symbols]

 2 Combustion Chamber 5 Combustibles Loading Chamber (Loading Means) 12 Controller (Supply Control Means) 14 Blower 15 Fuel Pump (Auxiliary Fuel Supply Means) 16 Temperature Detector (Room Temperature Detection Means) 18 Temperature Detector (Room Temperature Detection) Means) 22 Lower bottom part 24 Combustion cylinder 26 Ejection part (ejection means) 30 Combustion chamber 72 Smoke exhaust pipe 74 Air auxiliary fuel supply pipe 82 Projection part (ejection means) W

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F23G 5/50 ZAB F23G 5/12 ZAB F23G 5/44 ZAB F23H 3/00

Claims (7)

(57) [Claims] 1. A combustion chamber in which an object to be burned is burned; a room temperature detecting means for detecting a temperature of the combustion chamber; and a temperature of the combustion chamber based on the temperature detected by the room temperature detecting means. A supply control unit configured to control supply of the combustion material; and a room temperature increasing unit configured to increase a temperature of the combustion chamber. The room temperature detecting unit detects a temperature of the combustion chamber increased by the room temperature increasing unit. The supply control means does not permit the supply of the burnable material to the combustion chamber when the detected value of the room temperature detection means does not exceed a set value, and the room temperature increasing means stores auxiliary fuel. Has,
The temperature of the combustion chamber is increased by burning the auxiliary fuel, a blower for supplying air, an auxiliary fuel supply unit for supplying the auxiliary fuel, and the air or the air supplied from the blower. Jetting means for jetting out the auxiliary fuel supplied from the auxiliary fuel supply means, wherein the jetting means is provided with a combustion gas along an inner wall of the combustion chamber near a lower bottom in the combustion chamber. Is provided so as to be able to rise sufficiently, and the air from the blower or the auxiliary fuel from the auxiliary fuel supply means is jetted toward the center of the lower bottom portion of the combustion chamber to generate the combustion gas. An incinerator which rises along the inner wall of the chamber and closes the highest temperature portion during combustion near the lower bottom. 2. A combustion chamber in which an object to be burned is burned; a room temperature detecting means for detecting a temperature of the combustion chamber; and a temperature of the combustion chamber based on the temperature detected by the room temperature detecting means. Supply control means for controlling the supply of combustion products; and room temperature increasing means for increasing the temperature of the combustion chamber, wherein the room temperature detecting means detects the temperature of the combustion chamber increased by the room temperature increasing means. The supply control means does not permit the supply of the burnable material to the combustion chamber when the detected value of the room temperature detection means does not exceed a set value, and the room temperature increasing means stores auxiliary fuel. Has,
The temperature of the combustion chamber is increased by burning the auxiliary fuel, a blower for supplying air, auxiliary fuel supply means for supplying the auxiliary fuel, and the air or the air supplied from the blower. Jetting means for jetting out the auxiliary fuel supplied from the auxiliary fuel supply means, wherein the jetting means is provided with a combustion gas along an inner wall of the combustion chamber near a lower bottom in the combustion chamber. So that the temperature near the lower bottom is higher than the temperature at the center of the combustion chamber, and the temperature at the center is higher than the temperature near the top of the combustion chamber. So that the air from the blower or the auxiliary fuel from the auxiliary fuel supply means is jetted toward the lower bottom so as to burn the object to be burned at the center of the horizontal section of the lower portion of the combustion chamber. An incinerator that generates an air flow or an auxiliary fuel flow through the portion toward the lower bottom portion to raise combustion gas along the inner wall of the combustion chamber portion. 3. A incinerator according to claim 1 or 2, wherein said ejection means is an auxiliary for supplying an air passage for flowing the air from the blower, the auxiliary fuel from the auxiliary fuel supplying means A fuel passage, a plurality of air openings provided above a central portion of the lower bottom portion and connected to the air passage for ejecting the air from the blower toward the lower bottom portion, and the auxiliary fuel passage; A plurality of auxiliary fuel openings for ejecting the auxiliary fuel from the auxiliary fuel supply means toward the lower bottom portion, and an air auxiliary fuel supply portion comprising an annular double pipe having a lower surface thereof. Incinerator equipped with. 4. A incinerator according to claim 1 or 2, wherein said ejection means is an auxiliary for supplying an air passage for flowing the air from the blower, the auxiliary fuel from the auxiliary fuel supplying means A fuel passage, which is connected to the air passage or the auxiliary fuel passage and is attached to the inner wall of the combustion chamber, and the air from the blower toward the lower bottom or the auxiliary fuel from the auxiliary fuel supply means. An incinerator comprising: a plurality of air openings for ejecting air and a plurality of protrusions each having an opening for auxiliary fuel on a lower surface thereof. 5. A method according to claim 3 or 4 incinerators, wherein the air assist fuel supply unit is detachable incinerator. 6. The incinerator according to any one of claims 1 to 5, further comprising an air supply amount control means for controlling the air supply amount by controlling the blower in accordance with a detection result of the room temperature detecting means Incinerator. 7. The incinerator according to any one of claims 1 to 5, the auxiliary fuel supply amount for controlling the auxiliary fuel supply amount by controlling the auxiliary fuel supply means according to the detection result of the room temperature detecting means An incinerator further comprising control means.