JP2001147007A - Combustion controller for incinerating furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce incinerated residue of a material to be burned by suitably regulating the air for a primary combustion and the air for a secondary combustion with a simple constitution, completely burning the material and dry distilled gas, and suppressing the generation of harmful components in an exhaust gas. SOLUTION: The combustion controller for an incinerating furnace comprises the furnace having a primary combustion chamber for dry distilling a material to be burned and a secondary combustion chamber for burning the dry distilled gas, an air supply means for a primary combustion, an air supply means for a secondary combustion, a temperature detecting means for detecting the exhaust gas temperature of the secondary chamber, and a control means for controlling the operation of the supply means for the secondary combustion so as to supply the air for the secondary combustion of an initializing value when the temperature detected by the detecting means is a set temperature or lower in burning the distilled gas by dry distilling the material without supplying the air for the primary gas to the primary chamber in the secondary chamber or to increase or decrease the air for the secondary.combustion in response to the change in the exhaust gas temperature exceeding the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control device for an incinerator, and more particularly to a combustion control device for a primary combustion air and a secondary combustion air which can be properly adjusted by a simple structure, and which can be used to burn a substance and a carbonized gas. The present invention relates to a combustion control device for an incinerator, which can completely combust gas, suppress generation of harmful components in exhaust gas, and reduce incineration residues of burnables.

[0002]

2. Description of the Related Art A large incinerator for burning and burning incineration materials such as municipal waste is provided with a combustion control device in order to supply appropriate combustion air in accordance with the amount of combustion of the to-be-burned materials. There are things that are.

[0003] The combustion control system is designed to control the concentration of O2 in exhaust gas and CO2.
Provision is made of concentration detection means for detecting concentration and the like, and combustion air supply means for supplying combustion air is provided. The operation of the supply means is controlled.

As a result, large incinerators supply combustion air in accordance with the amount of combustion of the material to be burned to achieve proper combustion and reduce the generation of harmful components such as CO and dioxins in exhaust gas. Let me.

[0005] As such a combustion control apparatus for an incinerator, Japanese Patent Application Laid-Open Nos. Hei 8-110027 and Hei 9-496 are disclosed.
There is one disclosed in, for example, Japanese Patent Application Publication No.

[0006] Japanese Unexamined Patent Publication No. Hei 8-110027 discloses that when a converted value of CO concentration calculated from the CO concentration and the O2 concentration in exhaust gas rises, the damper is opened to increase the amount of air to promote combustion. , CO while reducing C
When the O concentration conversion value falls, the damper is squeezed to reduce the amount of air to reduce NOx, and when the NOx concentration conversion value calculated from the NOx concentration and O2 concentration in the exhaust gas exceeds the upper limit set value, the interlock is activated. Then, the damper is made manually operable and returned to a predetermined opening to suppress an increase in NOx concentration.

[0007] Japanese Unexamined Patent Publication No. 9-49623 discloses that the furnace temperature, the O2 concentration of the exhaust gas, the NOx concentration,
The secondary air amount control value is calculated based on the CO concentration, and the flow rate adjusting mechanism is controlled to open and close based on the secondary air amount control value so that the furnace temperature and the furnace exhaust O2 concentration become constant, and the primary combustion is performed. The flow control mechanism is opened and closed by the air control means to control the concentration of O2, the concentration of NOx, and the concentration of CO.

[0008]

The large-sized incinerator combustion control device requires expensive concentration detection means and control means for detecting CO concentration and the like, and requires periodic management of the detection means. In need. For this reason, such a combustion control device is suitable for a large incineration facility. However, it is costly to apply it to a small incinerator, for example, in which an object to be burned is carbonized by an electric heater to burn carbonized gas. There are difficult problems.

Conventionally, in a small incinerator, the amount of combustion air to be supplied is generally constant irrespective of the amount of the material to be burned or the fluctuation of the amount of combustion gas. There is a problem that combustion occurs.

[0010] Therefore, in a small incinerator, there is an inconvenience that the generation of harmful components such as CO and dioxins in the exhaust gas cannot be sufficiently suppressed.

[0011]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention provides a primary combustion chamber for heating an object to be burned by a primary electric heater to carbonize and a carbonized gas generated in the primary combustion chamber. An incinerator including a secondary combustion chamber that heats and burns with a secondary electric heater is provided, and a primary combustion air supply unit that supplies primary combustion air to the primary combustion chamber is provided,
A secondary combustion air supply unit for supplying secondary combustion air to the secondary combustion chamber is provided, and a temperature detection unit for detecting an exhaust gas temperature at an exhaust port of the secondary combustion chamber is provided. When burning the carbonized gas generated by carbonizing an object to be burned without supplying combustion air in the secondary combustion chamber, if the exhaust gas temperature detected by the temperature detecting means is equal to or lower than a set temperature, the initial setting is performed. When the exhaust temperature detected by the temperature detecting means exceeds a set temperature, the secondary combustion air is increased or decreased in accordance with a vertical change in the exhaust temperature exceeding the set temperature. Control means for controlling the operation of the secondary combustion air supply means to terminate the dry distillation of the burnable material in the primary combustion chamber and burn the carbonized decomposition product. The secondary combustion chamber Control means for controlling the operation of the primary combustion air supply means and the secondary combustion air supply means so as to stop the supply of combustion air and supply the primary combustion air to the primary combustion chamber; and The control means, when supplying primary combustion air to the primary combustion chamber and burning an object to be burned, when the exhaust gas temperature detected by the temperature detection means is equal to or lower than a set temperature, the initial set value for primary combustion. When air is supplied and the exhaust temperature detected by the temperature detecting means exceeds a set temperature, the primary combustion air is increased or decreased so as to increase or decrease the primary combustion air in accordance with a vertical change in the exhaust temperature exceeding the set temperature. It is a control means for controlling the operation of the air supply means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The combustion control apparatus for an incinerator according to the present invention is characterized in that the control means performs secondary combustion on the carbonized gas generated by carbonizing an object to be burned without supplying air for primary combustion to the primary combustion chamber. When the exhaust temperature detected by the temperature detecting means is equal to or lower than the set temperature during combustion in the chamber, the secondary combustion air having the initial set value is supplied, and the exhaust temperature detected by the temperature detecting means exceeds the set temperature. In this case, the operation of the secondary combustion air supply means is controlled so as to increase or decrease the secondary combustion air in accordance with the vertical change of the exhaust temperature exceeding the set temperature, and the dry distillation of the burnable material in the primary combustion chamber is performed. When the dry distillation decomposition product is burned after completion, the primary combustion air supply means is provided so as to stop supplying the secondary combustion air to the secondary combustion chamber and supply the primary combustion air to the primary combustion chamber. Controlling the operation of the secondary combustion air supply means, In addition, when the primary combustion air is supplied to the primary combustion chamber to burn an object to be burned, the primary combustion air is supplied at an initial set value when the exhaust gas temperature detected by the temperature detecting means is equal to or lower than a set temperature. At the same time, when the exhaust temperature detected by the temperature detecting means exceeds the set temperature, the primary combustion air supply means is operated so as to increase or decrease the primary combustion air in accordance with the vertical change of the exhaust temperature exceeding the set temperature. Control.

Thus, this combustion control device does not require expensive concentration detection means or control means for detecting the CO concentration or the like, and the primary and secondary combustion required by the exhaust temperature at the exhaust port of the secondary combustion chamber. Combustion air can be supplied without excess and deficiency, and complete combustion of the burnable material and the carbonized gas can be realized.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention. In FIG. 1, reference numeral 2 denotes an object to be burned, and 4 denotes an incinerator. The incinerator 4 for burning the burnable material 2 includes a primary housing 6, a secondary housing 8 mounted on the upper part of the primary housing 6, and a smoke tube 10 having one end connected to the secondary housing 8.
And formed from

In the primary housing 6, the object 2 to be burned is provided.
Is formed and provided. In the secondary housing 8, a secondary combustion chamber 14 communicating with the primary combustion chamber 12 is formed and provided. The smoke tube 10
A flue 18 is formed so as to communicate with one end to the exhaust port 16 of the secondary combustion chamber 14, and the other end of the flue 18 is open to the atmosphere at the other end.

The primary housing 6 includes a primary combustion chamber 1.
A primary electric heater 20 is provided around the periphery of the combustion chamber 2 for heating and carbonizing the material 2 to be burned, and a primary combustion chamber temperature sensor 22 is provided as temperature detecting means for detecting the temperature of the primary combustion chamber 12.
The primary combustion chamber temperature sensor 22 includes a temperature detection unit 24 disposed facing the primary combustion chamber 12, and a signal output unit 26 that outputs a temperature signal detected by the temperature detection unit 24.

The secondary housing 8 includes a secondary combustion chamber 1.
A secondary electric heater 28 that heats and burns the carbonized gas is provided around the periphery 4, and a secondary combustion chamber temperature sensor 30 is provided as temperature detection means for detecting the temperature of the secondary combustion chamber 14. The secondary combustion chamber temperature sensor 30 includes a temperature detection section 32 disposed facing the secondary combustion chamber 14 and a signal output section 34 for outputting a temperature signal detected by the temperature detection section 32.

The primary electric heater 20, the primary combustion chamber temperature sensor 22, the secondary electric heater 28, and the secondary combustion chamber temperature sensor 30 are connected to control means 38 of a combustion control device 36. A power supply unit 40 that supplies power to the primary electric heater 20 and the secondary electric heater 28 is connected to the control unit 38.

The combustion control unit 36 controls the control unit 38 to supply power to the secondary electric heater 28 from the power supply unit 40 to heat the secondary combustion chamber 14, and then from the power supply unit 40 to the primary electric heater 20. Power is supplied to heat the primary combustion chamber 12. The control means 38 keeps the temperature of the primary combustion chamber 12 at the primary combustion temperature (for example, 630 ° C.) by the primary combustion chamber temperature sensor 22 and carbonizes the burnable material 2. The generated carbonized gas is combusted while maintaining the temperature of the secondary combustion chamber 14 at the secondary combustion temperature (for example, 1000 ° C.).

As described above, the incinerator 4 includes the burnable substance 2.
Combustion chamber 1 in which air is heated and carbonized by a primary electric heater 20
2 and a secondary combustion chamber 14 for heating the carbonized gas generated in the primary combustion chamber 12 by a secondary electric heater 28 for combustion.

The incinerator 4 is provided with primary combustion air supply means 42 for supplying primary combustion air to the primary combustion chamber 12. The primary combustion air supply means 42 includes a primary blower 44 that pumps outside air as primary combustion air, and a primary combustion air that is pumped by the primary blower 44.
And a primary supply pipe 46 for supplying the lower part of the container.

The incinerator 4 is provided with a secondary combustion air supply means 48 for supplying secondary combustion air to the secondary combustion chamber 14. The secondary combustion air supply means 48 includes a secondary blower 50 that pumps outside air as secondary combustion air, and a secondary combustion air that is pumped by the secondary blower 50.
And a primary supply pipe 52 for supplying the water to the lower part of the main body.

Further, the incinerator 4 is provided with an exhaust gas temperature sensor 54 as temperature detecting means for detecting the exhaust gas temperature at the exhaust port 16 of the secondary combustion chamber 14. The exhaust temperature sensor 54 is
A temperature detecting section 56 is provided facing the exhaust port 16 and a signal output section 58 for outputting a temperature signal detected by the temperature detecting section 56 is provided.

The primary blower 44, the secondary blower 50, and the signal output unit 58 are connected to the control means 38 of the combustion control device 36. The combustion control device 36 inputs a temperature signal from the signal output unit 56 of the exhaust gas temperature sensor 54 to the control unit 38, and receives a primary / secondary combustion air supply unit 4 from the power supply unit 40.
The power is supplied to the primary and secondary blowers 44 and 50 to control the operation of the primary and secondary blowers 44 and 50 to adjust the primary and secondary combustion air.

The combustion control unit 36 controls the control means 38 to carbonize the burnable material 2 without supplying the primary combustion air to the primary combustion chamber 12 and burn the generated carbonized gas in the secondary combustion chamber 14. In addition, when the exhaust temperature detected by the exhaust temperature sensor 54 is equal to or lower than the set temperature, the secondary combustion air is set to the initial set value, and when the exhaust temperature detected by the exhaust temperature sensor 54 exceeds the set temperature, Controls the operation of the secondary combustion air supply means 48 so as to increase or decrease the secondary combustion air in accordance with the vertical change of the exhaust temperature exceeding the set temperature.

The combustion control device 36 includes a control means 38
When the carbonization of the burnable material 2 in the primary combustion chamber 12 is terminated to burn the carbonization decomposition product, the secondary combustion chamber 1
Supply of secondary combustion air to the primary combustion chamber 12 is stopped.
The operation of the primary combustion air supply means 42 and the secondary combustion air supply means 48 is controlled so as to supply the primary combustion air to the air conditioner.

Further, the combustion control device 36 controls the control means 3
According to 8, when primary combustion air is supplied to the primary combustion chamber 12 to burn the to-be-burned object 2, if the exhaust gas temperature detected by the exhaust gas temperature sensor 54 is lower than the set temperature, the primary combustion air is initialized. Value and the exhaust temperature sensor 5
When the exhaust gas temperature detected by the primary combustion engine 4 exceeds the set temperature, the primary combustion air supply means 42 increases or decreases the primary combustion air in accordance with the vertical change of the exhaust temperature exceeding the set temperature.
Operation control.

Next, the operation will be described. As shown in FIG. 2, when the operation of the incinerator 4 is started (100) by the control means 38 of the combustion control device 36, the incinerator 4 performs the process of the carbonization stage of the burnable material 2. In the carbonization stage, first, power is supplied from the power supply unit 40 to the secondary electric heater 28 to start heating the secondary combustion chamber 14 (102), and the temperature of the secondary combustion chamber 14 becomes the primary combustion chamber heating start temperature. (For example, 850 ° C.) or not (104).

If this determination (104) is NO, this determination (104) is repeated. This judgment (104) is YE
In the case of S, power is supplied from the power supply unit 40 to the primary electric heater 20 to start heating the primary combustion chamber 12 (106),
The temperature of the primary combustion chamber 12 is changed to the primary combustion temperature (for example, 63
(0 ° C.) is determined (108).

If this judgment (108) is NO, this judgment (108) is repeated. This judgment (108) is YE
In the case of S, the temperature of the primary combustion chamber 12 is maintained at the temperature for primary combustion (110), and it is determined whether or not the temperature of the secondary combustion chamber 14 has reached the temperature for secondary combustion (for example, 1000 ° C.) ( 11
2) Do it.

If this determination (112) is NO, this determination (112) is repeated. This judgment (112) is YE
In the case of S, the temperature of the secondary combustion chamber 14 is maintained at the secondary combustion temperature (114).

In this state, the primary combustion chamber 12 is not supplied with the primary combustion air, but the secondary combustion chamber 14 is supplied with the secondary combustion air having an initial set value (116). And combustion of the carbonized gas.

Thus, the incinerator 4 carbonizes the material to be burned in the primary combustion chamber 12 maintained at the primary combustion temperature, and a temperature close to the primary combustion temperature (for example, about 600 ° C.) from the primary combustion chamber 12. Gas (mixed gas of nitrogen and carbon monoxide) is introduced into the secondary combustion chamber 14,
Is mixed with air for secondary combustion to perform combustion.

The process (116) in which the burnable material 2 is carbonized without supplying the primary combustion air to the primary combustion chamber 12 and the generated carbonized gas is burned in the secondary combustion chamber 14 by the secondary combustion air. Then, it is determined by the exhaust gas temperature sensor 54 whether or not the exhaust gas temperature at the exhaust port 16 of the secondary combustion chamber 14 is equal to or lower than the set temperature for the secondary combustion (118).

If the determination (118) is YES, the operation of the secondary combustion air supply means 48 is controlled so as to supply the secondary combustion air having the initial set value by the process (116). If this determination (118) is NO, the exhaust port 16
It is determined (120) whether or not the exhaust gas temperature exceeds the secondary combustion temperature which is the set temperature.

If the determination (120) is NO, the process returns to the above-mentioned processing (116). If this determination (120) is YES, it is determined (122) whether the exhaust gas temperature exceeding the set temperature has increased or decreased.

In this judgment (122), when the exhaust gas temperature rises and changes, the operation of the secondary combustion air supply means 48 is controlled so as to increase the secondary combustion air (124), and the exhaust gas temperature drops and changes. In this case, reduce the secondary combustion air (1
26), the operation of the secondary combustion air supply means 48 is controlled.

Accordingly, the combustion control device 36 increases the exhaust gas temperature when the secondary combustion chamber 14 maintained at the secondary combustion temperature is supplied with the secondary combustion air of the initial set value to perform combustion. By doing so, the required amount of secondary combustion air increases as the exhaust gas temperature rises, so that the supplied secondary combustion air is increased from the initial set value.

On the other hand, the combustion control device 36 controls the secondary combustion chamber 1
When the amount of dry distillation gas introduced into 4 decreases, the supplied secondary combustion air becomes excessive and the combustion state deteriorates, the calorific value decreases, and the exhaust gas temperature decreases, so that the exhaust gas temperature decreases. Accordingly, the amount of secondary combustion air to be supplied is reduced because the required amount of secondary combustion air decreases.

When the exhaust gas temperature at the exhaust port 16 becomes equal to or lower than the secondary combustion temperature which is the set temperature, the secondary combustion air having the initial set value is supplied.

As described above, the combustion control device 36 sets the secondary combustion air to the initial set value when the exhaust temperature of the exhaust port 16 is equal to or lower than the set temperature in the carbonization stage, and sets the exhaust temperature to the set temperature. If the temperature exceeds the preset temperature, the operation of the secondary combustion air supply means 48 is controlled so as to increase or decrease the secondary combustion air in accordance with the vertical change of the exhaust temperature exceeding the set temperature.

Thus, the combustion control device 36 does not require expensive concentration detection means or control means for detecting the CO concentration or the like, and is required for the combustion of the carbonized gas by the exhaust gas temperature at the exhaust port 16 of the secondary combustion chamber 14. Secondary combustion air can be supplied without excess and deficiency, and complete combustion of the carbonized gas can be realized.

Therefore, the combustion control device 3 of the incinerator 4
6, the secondary combustion air can be appropriately adjusted by a simple configuration, the carbonized gas can be completely burned, and the generation of harmful components such as carbon monoxide and dioxins in the exhaust gas can be suppressed. .

After the processes (124) and (126) for increasing and decreasing the secondary combustion air based on the exhaust gas temperature, it is determined (128) whether or not the carbonization of the burnable material 2 has been completed. This determination (128) is made based on, for example, the up-down change state of the exhaust gas temperature and the increase / decrease change state of the secondary combustion air.

If the determination (128) is NO, the process returns to the step (116). If the determination (128) is YES, the process proceeds to a combustion stage in which the dry distillation decomposition product of the burnable material 2 is burned.

In the combustion stage, air for primary combustion is supplied to the primary combustion chamber 12 to burn the dry distillation decomposition product of the burnable material 2. In this combustion stage, when the secondary combustion air is supplied to the secondary combustion chamber 14, the oxygen amount in the secondary combustion chamber 14 becomes “the oxygen amount of the secondary combustion air, the primary oxygen from the primary combustion chamber 12. The amount of unburned oxygen in the combustion air "
The ratio between the amount of gas to be burned and the amount of oxygen in 4 may exceed the combustible range and cause incomplete combustion.

This is because the unburned oxygen amount always changes depending on the combustion state of the primary combustion chamber 12, but the secondary combustion chamber 14
Is smaller than the volume of the primary combustion chamber 12,
The amount of gas to be burned in the secondary combustion chamber 14
This is because the amount of unburned oxygen from Step 2 is sufficiently large, and if the supply of secondary combustion air is continued, the amount of oxygen becomes excessive.

Therefore, in the combustion stage in which the dry distillation of the burnable substance 2 in the primary combustion chamber 12 is terminated and the pyrolysis products are burned, the supply of the secondary combustion air to the secondary combustion chamber 14 is stopped to stop the primary combustion. The primary combustion air of the initial set value is supplied to the combustion chamber 12 (130).

In the process (130) in which the primary combustion air is supplied to the primary combustion chamber 12 to burn the dry distillation cracked product without supplying the secondary combustion air to the secondary combustion chamber 14, the secondary combustion chamber 14 It is determined whether or not the exhaust temperature of the exhaust port 16 is equal to or lower than the primary combustion temperature which is the set temperature (132).

If the determination (132) is YES, the operation of the primary combustion air supply means 42 is controlled so as to supply the primary combustion air of the initial set value by the process (130). If this determination (132) is NO, the exhaust port 16
It is determined whether or not the exhaust gas temperature exceeds the primary combustion temperature which is the set temperature (134).

If the determination (134) is NO, the process returns to the above-mentioned processing (130). If the determination (134) is YES, it is determined (136) whether the exhaust gas temperature exceeding the set temperature has increased or decreased.

In this judgment (136), when the exhaust gas temperature rises and changes, the operation of the primary combustion air supply means 42 is controlled so as to increase the primary combustion air (138). Reduce primary combustion air (1
40), the operation of the primary combustion air supply means 42 is controlled.

When the supply of the primary combustion air to the primary combustion chamber 12 is started, the combustion control device 36 stops the supply of the secondary combustion air to the secondary combustion chamber 14 and the The primary combustion air is increased or decreased according to the vertical change of the exhaust temperature.

After the processing (138) and (140) for increasing and decreasing the primary combustion air based on the exhaust gas temperature, it is determined (142) whether or not the combustion of the dry distillation decomposition product of the burnable material 2 has ended. If this determination (142) is NO, the processing (1)
Return to 30). If this determination (142) is YES,
It is determined that the combustion stage has ended, and the operation is ended (144).

As described above, the combustion control device 36 stops the supply of the secondary combustion air to the secondary combustion chamber 14 and supplies the primary combustion air to the primary combustion chamber 12 in the combustion stage. Next, the operation of the primary combustion air supply means 42 and the secondary combustion air supply means 48 is controlled.

In the combustion stage, when the exhaust gas temperature at the exhaust port 16 is equal to or lower than the set primary combustion temperature in the combustion stage, the primary combustion air is set to an initial set value, and When the temperature exceeds the set temperature, the operation of the primary combustion air supply means 42 is controlled so as to increase or decrease the primary combustion air in accordance with a vertical change in the exhaust temperature exceeding the set temperature.

As a result, the combustion control device 36
The primary combustion air required for the combustion of the dry distillation decomposition products is supplied without excess and deficiency by the exhaust temperature at the exhaust port 16 of the secondary combustion chamber 14 without the need for expensive concentration detecting means or control means for detecting the O concentration or the like. And complete combustion of the carbonized cracked product can be realized.

For this reason, the combustion control device 3 of the incinerator 4
6 can appropriately adjust the primary combustion air with a simple configuration, can completely burn the dry distillation cracked product, and can reduce the incineration residue of the burnable material 2.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified. For example, FIG.
Shows another embodiment of the combustion control device 36 of the incinerator 4. The combustion control device 36 of this alternative embodiment includes a thermal catalyst 60 made of porous ceramic in the secondary combustion chamber 14.
Is provided. The combustion control device 36 can capture the dry distillation gas in the hole 62 of the thermal catalyst body 60 and perform the heating and combustion by the catalytic action.

As a result, the combustion control device 36 of this other embodiment can capture the carbonized gas by the thermal catalyst body 60 made of porous ceramics and more reliably burn it completely. Generation of certain carbon monoxide and dioxins can be more reliably suppressed.

[0061]

As described above, the combustion control apparatus for an incinerator according to the present invention does not require expensive concentration detection means or control means for detecting CO concentration or the like, and can control the exhaust gas temperature at the exhaust port of the secondary combustion chamber. Combustion air required for combustion can be supplied without excess and deficiency, and complete combustion of the combustion target and the carbonization gas can be realized.

Therefore, the combustion control device of this incinerator
The primary combustion air and the secondary combustion air can be properly adjusted with a simple configuration, the burnable matter and the carbonized gas can be completely burned, and the generation of harmful components in the exhaust gas can be suppressed. The incineration residue of the combustion material can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an incinerator combustion control device according to an embodiment of the present invention.

FIG. 2 is a flowchart of combustion control.

FIG. 3 is a schematic configuration diagram of a combustion control device of an incinerator showing another embodiment.

[Explanation of symbols]

 2 Burned object 4 Incinerator 6 Primary housing 8 Secondary housing 10 Smoke tube 12 Primary combustion chamber 14 Secondary combustion chamber 16 Exhaust port 18 Flue 20 Primary electric heater 22-Secondary combustion chamber temperature sensor 28 Secondary electric heater 30 Secondary Combustion chamber temperature sensor 26 Combustion control device 38 Control means 40 Power supply unit 42 Primary combustion air supply means 48 Secondary combustion air supply means 54 Exhaust temperature sensor

Claims (3)

[Claims] 1. A primary combustion chamber for heating a substance to be burned by a primary electric heater to dry-distill it, and a secondary combustion chamber for heating and burning the carbonized gas generated in the primary combustion chamber by a secondary electric heater. Providing an incinerator, providing primary combustion air supply means for supplying primary combustion air to the primary combustion chamber, providing secondary combustion air supply means for supplying secondary combustion air to the secondary combustion chamber, Temperature detecting means for detecting an exhaust gas temperature at an exhaust port of the secondary combustion chamber, wherein the carbonized gas generated by carbonizing the burnable material without supplying air for primary combustion to the primary combustion chamber is subjected to the secondary combustion. When the exhaust gas temperature detected by the temperature detecting means is equal to or lower than a set temperature when burning in the chamber, the secondary combustion air having the initial set value is supplied and the exhaust temperature detected by the temperature detecting means is set to the set temperature. If the temperature exceeds the set temperature, A combustion control apparatus for an incinerator, further comprising control means for controlling the operation of the secondary combustion air supply means so as to increase or decrease the secondary combustion air in accordance with a change in the air temperature. 2. The method according to claim 1, wherein the control unit stops supplying the secondary combustion air to the secondary combustion chamber when the dry distillation of the substance to be burned in the primary combustion chamber is terminated and the pyrolysis product is burned. 2. The incineration according to claim 1, wherein the control unit controls the operation of the primary combustion air supply unit and the secondary combustion air supply unit so as to supply the primary combustion air to the primary combustion chamber. 3. Furnace combustion control device. 3. The control means, when supplying primary combustion air to the primary combustion chamber and burning an object to be burned, when the exhaust temperature detected by the temperature detection means is equal to or lower than a set temperature, an initial value. When the set temperature of the primary combustion air is supplied and the exhaust temperature detected by the temperature detecting means exceeds the set temperature, the primary combustion air is increased or decreased according to the vertical change of the exhaust temperature exceeding the set temperature. 3. The combustion control device for an incinerator according to claim 1, wherein the control device controls the operation of the primary combustion air supply device.