JP2004061025A - Combustion control method for fluidized incinerator device and gas gun - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluidized incinerator device capable of preventing overheating of temperatures of a gas gun interior and a gas gun neighborhood. <P>SOLUTION: The fluidized incinerator device has a free board temperature detecting part detecting a temperature of a free board of a fluidized incinerator, a fluidized bed temperature detecting part detecting a temperature of a fluidized bed part of the fluidized incinerator, a temperature monitoring part preset with an ignitible temperature of gaseous fuel fed to a main gas nozzle as a set value and detecting whether or not both detection results of the free board temperature detecting part and the fluidized bed temperature detecting part are the set value or more, and a burner control part extinguishing a pilot burner when both detection results of the free board temperature detecting part and the fluidized bed temperature detecting part are the set value or more on the basis of a detection result of the temperature monitoring part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fluidized incinerator apparatus for controlling combustion of a gas gun and a method for controlling combustion of a gas gun.
[0002]
[Prior art]
A fluidized incinerator apparatus according to the related art will be described with reference to a schematic configuration diagram of FIG. In the conventional fluidized incinerator apparatus, a gas gun 100 in the sand is inserted into the fluidized bed portion 101, and the gas gun 100 in the sand ignites a gas fuel (city gas or sewage extinguishing gas, etc.) which is an auxiliary fuel of the fluidized incinerator. In this structure, the flame is directly blown into the fluidized bed of the fluidized incinerator. Here, a pilot nozzle is provided inside the sand gas gun 100 in order to increase safety and gas fuel efficiency in the sand layer, and the pilot nozzle is ignited at all times during the sand gas gun operation. The pilot burner ignites the gas fuel injected from the main gas nozzle in the gas gun in the sand, and blows a flame from the main gas nozzle into the sand layer.
[0003]
During operation of the gas gun 100 in the sand, the gas burner 102 generates an electric spark by an ignition electrode so that the pilot burner is always ignited. The pilot burner is supplied to ignite and a flame is formed at the tip of the pilot burner.
Here, the theoretical amount of air required to combust the pilot gas fuel and A _0, when the amount of the pilot combustion air to A, the excess air ratio m is calculated by A ÷ A _0, the pilot burner In this case, m is usually operated in the range of 3.0 to 3.5.
[0004]
[Problems to be solved by the invention]
However, in the fluidized incinerator apparatus of the related art described above, the pressure in the fluidized bed portion of the fluidized incinerator which is the tip of the gas gun 100 in the sand depends on the amount of fluidized air, the supply amount of the incinerated material, and the sand filling amount in the fluidized bed portion. , Always fluctuates from the temperature in the fluidized bed. Therefore, in response to these fluctuations, the supply amounts of the pilot gas fuel and the pilot combustion air fluctuate, that is, the excess air ratio m fluctuates, for example, m may become about 2.0. As a result, a case may occur where the temperature at the tip of the pilot burner burns as high as 1200 to 1400 ° C.
As a result, the sand and the incinerated ash are overheated at the front end of the pilot burner and the front of the gas gun 100 in the sand, become semi-molten or molten, and adhere to the front end of the pilot burner and the front of the gas gun 100 in the sand. The burner tip and the gas gun 100 in the sand are closed. In addition, the inside of the gas gun 100 becomes high in temperature due to the blockage, and the middle part and the tip of the gas gun 100 are melted. As a result, the life of the gas gun 100 in the sand is short, and periodic maintenance and parts replacement are required, for example, once every 6 to 12 months, and the cost for maintenance and labor, and the burden on time increase. The problem arises.
[0005]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fluidized incinerator apparatus and a gas gun combustion control method for a fluidized incinerator apparatus capable of preventing overheating inside and near the gas gun. Is to do.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention relates to a fluidized incinerator device provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion. A fluidized bed temperature detector for detecting the temperature of the fluidized bed portion of the fluidized incinerator; and a temperature at which the ignitable temperature of the gaseous fuel supplied to the main gas nozzle is set in advance as a set value; A temperature monitoring unit that detects whether the temperature indicated by the detection result of the detection unit is equal to or higher than the set value; and a detection result of the fluidized bed temperature detection unit based on the detection result of the temperature monitoring unit. And a burner control unit that extinguishes the pilot burner when the temperature is equal to or higher than the set value.
[0007]
Further, the present invention is a fluidized incinerator apparatus provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion, A freeboard temperature detector for detecting the temperature of the freeboard, a fluidized bed temperature detector for detecting the temperature of the fluidized bed of the fluidized incinerator, and a temperature at which the gaseous fuel supplied to the main gas nozzle can be ignited. A temperature monitoring unit that is set in advance as a value and detects whether or not both detection results of the freeboard temperature detection unit and the fluidized bed temperature detection unit are equal to or greater than the set value. If the detection results of both the freeboard temperature detector and the fluidized bed temperature detector are both equal to or greater than a set value based on the detection results of the pilot bar, And having a burner control unit for extinguishing the toner, the.
[0008]
Further, according to the present invention, in the fluidized incinerator device described above, the burner control unit may include, when extinguishing the pilot burner, the gaseous fuel and the combustion air supplied to burn the pilot burner. The supply of the combustion air is stopped, and the supply of the combustion air is maintained.
[0009]
Further, according to the present invention, in the fluidized incinerator device described above, the burner control unit, after extinguishing the pilot burner, based on the detection result of the temperature monitoring unit, based on the detection result of the free board temperature detection unit and the When any one of the detection results of the fluidized bed temperature detection section does not reach a predetermined temperature, the pilot burner is ignited.
[0010]
In addition, the present invention provides the fluidized-bed incinerator device described above, wherein the freeboard temperature detection unit is provided in a plurality of the freeboard, a freeboard temperature sensor for detecting the temperature of the freeboard, and a freeboard temperature sensor. A freeboard temperature high selector for selecting a detection result indicating the highest temperature among the detection results output from the respective components, and outputting the detection result selected by the freeboard temperature high selector to the temperature monitoring unit. It is characterized by the following.
[0011]
The present invention also provides the fluidized-bed incinerator device described above, wherein the fluidized-bed temperature detecting unit is provided in the fluidized-bed portion in a plurality, and a fluidized-bed temperature sensor that detects a temperature of the fluidized-bed portion; Among the detection results output from each of the sensors, a fluidized bed temperature high selector that selects a detection result indicating the highest temperature, and the detection result selected by the fluidized bed temperature high selector is sent to the temperature monitoring unit. It is characterized by outputting.
[0012]
Further, the present invention provides a method for controlling combustion of a gas gun in a fluidized incinerator apparatus provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion. The temperature of the fluidized bed of the fluidized incinerator is detected, and the temperature of the fluidized bed is higher than a predetermined temperature at which the temperature of the gaseous fuel supplied to the main gas nozzle becomes ignitable. Whether the pilot burner is extinguished when the detection result is equal to or higher than a predetermined temperature is detected.
[0013]
Further, the present invention provides a method for controlling combustion of a gas gun in a fluidized incinerator apparatus provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion. The temperature of the fluidized bed portion of the fluidized incinerator was detected, the temperature of the fluidized bed portion of the fluidized incinerator was detected, and the detection result of the temperature of the freeboard and the temperature of the fluidized bed portion were detected. When the detection results are both equal to or higher than a predetermined temperature, the pilot burner is extinguished.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a fluidized incinerator apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic block diagram showing a configuration of a fluidized incinerator apparatus according to one embodiment of the present invention. In this figure, a fluidized incinerator 2 of a fluidized incinerator device 1 is constituted by a free board 11 and a fluidized bed portion 3. In the fluidized bed section 3, a dispersion pipe 4 in which air nozzles are uniformly provided is inserted horizontally, and flowing air blown from a fluidized air blower 5 is supplied to the fluidized bed section 3 through this air nozzle. The fluidized bed 3 uses sand as a fluidized medium.
[0015]
The freeboard temperature detection unit 10 detects the temperature of the freeboard 11 of the fluidized incinerator 2. The fluidized bed temperature detector 20 detects the temperature of the fluidized bed 3 of the fluidized incinerator 2. The temperature monitoring unit 30 sets the ignitable temperature of the gaseous fuel supplied to the main gas nozzle as a set value in advance, and detects the detection results of both the freeboard temperature detection unit 10 and the fluidized bed temperature detection unit 20, It is detected whether both are equal to or greater than the set value.
[0016]
The burner control unit 40 controls whether the main solenoid valve 510 is opened and closed to supply the main gas fuel to the main gas nozzle of the gas gun 100 in the sand.
Further, based on the detection result of the temperature monitoring unit 30, the burner control unit 40 indicates that both the detection results of the freeboard temperature detection unit 10 and the fluidized bed temperature detection unit 20 are equal to or higher than a predetermined temperature. In this case, by closing the pilot solenoid valve 500, the pilot gas fuel supplied from the gas fuel supply unit 400 to the gas gun 100 is shut off, and the pilot burner of the gas gun 100 is extinguished. The extinguishing / ignition of this pilot burner will be described later.
[0017]
The starting burner 200 ignites at the start of operation of the fluidized incinerator apparatus 1, heats the inside of the fluidized incinerator 2, and warms up to a predetermined temperature. The gas gun 100 in the sand heats the fluidized bed 3. The burner blower 300 supplies combustion air to the gas gun 100 in sand and the burner 200 for starting. The gas fuel supply unit 400 supplies gas fuel (gas fuel) to the gas gun 100 in sand and the burner 200 for starting.
[0018]
Next, the configuration of the gas gun 100 in FIG. 1 will be described with reference to the configuration diagram of FIG. In this figure, the ignition electrode 110 generates a spark and ignites the pilot gas fuel based on an ignition instruction from the burner control unit 40. The pilot gas fuel supply unit 120 supplies gas fuel to the pilot burner. The pilot combustion air supply unit 130 supplies combustion air to the pilot burner. Pilot tip nozzle 140 injects the flame ignited by ignition electrode 110.
[0019]
The main gas burner fuel supply unit 150 supplies gas fuel into the main gas nozzle 170. The combustion air supply unit 160 supplies combustion air into the main gas nozzle 170. The frame eye 180 detects whether a flame is formed in the main gas nozzle 170.
[0020]
Next, the freeboard temperature detection unit 10, the fluidized bed temperature detection unit 20, the temperature monitoring unit 30, the burner control unit 40, and the sand gas gun operation management unit 50 in FIG. 1 will be described with reference to the schematic block diagram of FIG. .
In the figure, a freeboard temperature sensor 10-1 detects the temperature of the upper (upper) stage of the freeboard, and the freeboard temperature sensor 10 detects the temperature of the middle (center) of the freeboard. -2, the highest temperature among the detection results output from the freeboard temperature sensors 10-1 to 10-3 for detecting the lower (lower) temperature of the freeboard, and the freeboard temperature sensors 10-1 to 10-3. And a free board temperature high selector 10-4 for selecting a detection result indicating the above and outputting the selected detection result to the temperature monitoring unit 30.
[0021]
The fluidized bed temperature detector 20 includes a fluidized bed temperature sensor 20-1 for detecting the temperature of the upper (upper) stage of the fluidized bed portion and a fluidized bed temperature sensor 20-2 for detecting the middle (central) temperature of the fluidized bed portion. And a fluidized bed temperature sensor 20-3 for detecting the lower (lower) temperature of the fluidized bed portion, and the highest temperature among the detection results output from each of the fluidized bed temperature sensors 20-1 to 20-3. And a fluidized bed temperature high selector 20-4 for selecting a detection result to be indicated and outputting the selected detection result to the temperature monitoring unit 30.
[0022]
In the temperature monitoring unit 30, the freeboard temperature setter H (30-1) sets the temperature indicated by the detection result output from the freeboard temperature high selector 10-4 to a temperature equal to or higher than a predetermined first set value. Is output, an ON signal is output to the AND circuit 30-5. The temperature that becomes the first set value is set according to the temperature (for example, 750 ° C.) at which the gas fuel used as the gas fuel ignites.
The freeboard temperature setter L (30-2) outputs an ON signal when the temperature indicated by the detection result output from the freeboard temperature high selector 10-4 indicates a temperature lower than the first set value. Output to OR circuit 30-6.
[0023]
The fluidized bed temperature setter H (30-3) outputs an ON signal to the AND circuit 30-5 when the temperature indicated by the detection result output from the fluidized bed temperature high selector 20-4 is equal to or higher than a second set value. Output to The temperature that becomes the second set value is also set according to the ignition temperature of the gas fuel used as the gas fuel (for example, 680 ° C.).
The fluidized bed temperature setter L (30-4) outputs an ON signal to the OR circuit 30-6 when the temperature indicated by the detection result output from the fluidized bed temperature high selector 20-4 is less than the second set value. Output to
[0024]
When the ON signal is output from both the freeboard temperature setter H (30-1) and the fluidized bed temperature setter H (30-3), the AND circuit 30-5 performs an AND operation on the burner control unit 40. An ON signal is output to the circuit 40-1.
When an ON signal is output from one of the free board temperature setting device L (30-2) and the fluidized bed temperature setting device L (30-4), the OR circuit 30-6 is configured to control the burner control unit. An on signal is output to the AND circuit 40-2 of the forty.
[0025]
The in-sand gas gun operation management unit 50 monitors whether or not the in-sand gas gun 100 is operating, and outputs an ON signal to the AND circuit 40-1 and the AND circuit 40-2 when it is operating. .
[0026]
In the burner control unit 40, the AND circuit 40-1 outputs an ON signal to the pilot burner fire extinguishing unit 40-3 when an ON signal is output from the AND circuit 30-5 and the sand gas gun operation management unit 50. I do. The pilot burner fire extinguishing unit 40-3 extinguishes the pilot burner when the ON signal is output from the AND circuit 40-1. Here, the pilot burner is a pilot flame for igniting the main burner injected from the main gas nozzle 170.
[0027]
The AND circuit 40-2 outputs an ON signal to the pilot burner ignition unit 40-4 when an ON signal is output from the OR circuit 30-6 and the sand gas gun operation management unit 50. The pilot burner ignition section 40-4 ignites the pilot burner when an ON signal is output from the AND circuit 40-2.
[0028]
When the pilot burner is ignited by the pilot burner ignition unit 40-4, the burner control unit 40 opens the pilot solenoid valve 500 in FIG. 1 and supplies the gas fuel supplied from the gas fuel supply unit 400 to the pilot fuel in FIG. When the gas is supplied to the gas fuel supply unit 120 and a spark is generated by the ignition electrode 110 to ignite and extinguish the pilot burner, the pilot solenoid valve 500 is closed to shut off the gas fuel supplied from the gas fuel supply unit 400. Extinguish fire by doing.
[0029]
Next, the operation of the fluidized incinerator apparatus 1 having the configuration shown in FIG. 1 will be described.
When starting the fluidized incinerator apparatus 1 from normal temperature, the burner control unit 40 first ignites the starter burner 200, raises the temperature of the fluidized bed unit so that a predetermined temperature rises per hour, When the temperature of the layer portion reaches or exceeds a predetermined first heating temperature, the gas gun 100 in the sand is also ignited and further heated, and when the second heating temperature is reached, the starting burner 200 is started. Is extinguished, only the gas gun 100 in the sand is ignited, and the temperature is raised to the third temperature raising temperature. After the temperature rise in the fluidized incinerator 2 is completed, an incinerated material (eg, sludge, dewatered cake, etc.) is charged from the incinerated material charging section 450, and an operation of incinerating the incinerated material is performed. When the in-sand gas gun 100 is in operation, an on signal is constantly output from the in-sand gas gun operation management unit 50.
[0030]
On the other hand, the freeboard temperature detection unit 10 selects the detection result indicating the highest temperature among the detection results detected by the freeboard temperature sensors 10-1 to 10-3 by using the freeboard temperature high selector 10-4. Output to the temperature monitoring unit 30. The fluidized bed temperature detecting unit 20 monitors the temperature by selecting, from the detection results detected by the fluidized bed temperature sensors 20-1 to 20-3, the detection result indicating the highest temperature by the fluidized bed temperature high selector 20-4. Output to the unit 30. The temperature monitoring unit 30 determines that the detection result output from the freeboard temperature high selector 10-4 is equal to or more than the first set value, and the detection result output from the fluidized bed temperature high selector 20-4 is the second set value. If the value is equal to or greater than the set value, an ON signal is output from the AND circuit 30-5 to the burner control unit 40.
[0031]
The burner control unit 40 outputs an ON signal from the sand gas gun operation management unit 50 and the AND circuit 30-5, and thus outputs an ON signal from the AND circuit 40-1 to the pilot burner fire extinguishing unit 40-3. The pilot burner fire extinguishing unit 40-3 closes the pilot solenoid valve 500 and extinguishes the pilot burner based on the ON signal from the AND circuit 40-1. At this time, the combustion air from the pilot combustion air supply unit 130 is continuously supplied.
[0032]
On the other hand, when the detection result from the freeboard temperature high selector 10-4 is less than the first set value, or when the detection result output from the fluidized bed temperature high selector 20-4 is the second detection value, If it is less than the set value, the ON signal is output from the OR circuit 30-6 to the burner control unit 40.
[0033]
The burner control unit 40 outputs an ON signal from the sand gas gun operation management unit 50 and the OR circuit 30-6, and outputs an ON signal from the AND circuit 40-2 to the pilot burner ignition unit 40-4. The pilot burner ignition section 40-4 opens the pilot solenoid valve 500 and generates a spark by the ignition electrode 110 to ignite the pilot burner based on the ON signal from the AND circuit 40-2.
[0034]
According to the embodiment described above, the pilot burner is not always ignited during the gas gun operation as in the related art, but the pilot burner is ignited or extinguished according to the temperature condition in the fluidized incinerator. In addition, the operating time of the pilot burner can be reduced, overheating near the tip of the gas gun can be prevented, wear can be reduced, and the life can be extended.
[0035]
Further, in the above-described embodiment, since the first set value is set larger than the second set value, the heat of the fluidized bed portion is not deprived by the free board, so that it is ensured at a high ambient temperature. Can ignite.
[0036]
Further, in the above-described embodiment, a case has been described in which three freeboard temperature sensors and three fluidized bed temperature sensors are provided. However, three or more freeboard temperature sensors and three or more fluidized bed temperature sensors may be provided.
[0037]
As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes a design and the like without departing from the gist of the present invention.
[0038]
【The invention's effect】
As described above, according to the present invention, the temperature of the fluidized bed of the fluidized incinerator is detected, and the detection result is equal to or higher than the predetermined temperature at which the gaseous fuel supplied to the main gas nozzle can be ignited. In this case, the pilot burner is extinguished, so that the main gas fuel is not ignited in the gas gun, the main gas fuel is injected from the main gas nozzle, and then ignited by the high ambient temperature in the fluidized bed. . As a result, even after the pilot burner is extinguished, the main gas fuel burns in the fluidized bed, so that the temperature in the fluidized bed can be maintained without lowering the furnace temperature, and the pilot burner is extinguished. Therefore, it is possible to prevent overheating at the tip of the pilot burner due to the fluctuation of the excess air ratio between the pilot fuel and the pilot combustion air, prevent the gas gun from being melted, extend the life of the gas gun, and This has the effect of reducing the cost, personnel cost, and time required for maintenance and management. Further, since the pilot burner is extinguished, gas fuel consumed by the pilot burner can be reduced.
[0039]
Further, according to the present invention, the temperature of the freeboard of the fluidized incinerator is detected, the temperature of the fluidized bed portion of the fluidized incinerator is detected, the detection result of the freeboard temperature is detected, and the temperature of the fluidized bed portion is detected. When the detected results are both equal to or higher than the predetermined temperature, the pilot burner is extinguished, so that the main gas fuel is not ignited in the gas gun and the main gas fuel is injected from the main gas nozzle. Ignition can be ensured by the high ambient temperature in the fluidized bed and the high ambient temperature in the freeboard.
[0040]
Further, according to the present invention, when extinguishing the pilot burner, the supply of gaseous fuel is stopped and the supply of combustion air is maintained, so even when the pilot burner is extinguished, Sand can be prevented from entering the gas gun.
[0041]
Further, according to the present invention, after extinguishing the pilot burner, one of the detection result of the freeboard temperature detection unit and the detection result of the fluidized bed temperature detection unit reaches a predetermined temperature. If not, the pilot burner was ignited, and the pilot burner ignited the main gas fuel to form a flame and injected it from the main gas nozzle. It can be prevented that the raw gas injected from the incinerator is discharged from the fluidized incinerator in a state where it does not burn, and is burned at a later stage.
[0042]
Further, according to the present invention, the temperature of the freeboard is detected by the plurality of freeboard temperature sensors, and among the detection results of the freeboard temperature sensors, the detection result indicating the highest temperature is selected and output to the temperature monitoring unit. Therefore, the temperature of the free board can be detected accurately.
[0043]
Further, according to the present invention, the temperature of the fluidized bed portion is detected by a plurality of fluidized bed temperature sensors, and among the detection results output from each of the fluidized bed temperature sensors, the detection result indicating the highest temperature is selected. Thus, the temperature of the fluidized bed can be accurately detected.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing a configuration of a fluidized incinerator apparatus according to an embodiment of the present invention.
FIG. 2 is a configuration diagram for explaining a configuration of a gas gun 100 in sand in FIG.
FIG. 3 is a schematic block diagram for explaining a freeboard temperature detecting unit 10, a fluidized bed temperature detecting unit 20, a temperature monitoring unit 30, a burner control unit 40, and a sand gas gun operation management unit 50.
FIG. 4 is a schematic configuration diagram for explaining a fluidized incinerator apparatus according to a conventional technique.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 fluidized incinerator device 2 fluidized incinerator 3 fluidized bed section 10 freeboard temperature detecting section 10-1, 10-2, 10-3 freeboard temperature sensor 10-4 freeboard temperature high selector 11 freeboard 20 fluidized bed temperature detection Units 20-1, 20-2, 20-3 Fluidized bed temperature sensor 20-4 Fluidized bed temperature high selector 30 Temperature monitoring unit 30-1 Freeboard temperature setting unit H
30-2 Freeboard temperature setting device L
30-3 Fluidized bed temperature setting device H 30-4 Fluidized bed temperature setting device L
30-5, 40-1, 40-2 AND circuit 30-6 OR circuit 40 Burner control unit 40-3 Pilot burner fire extinguishing unit 40-4 Pilot burner ignition unit

Claims (8)

A fluidized incinerator device provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion,
A fluidized bed temperature detecting section for detecting the temperature of the fluidized bed section of the fluidized incinerator;
The temperature at which the gaseous fuel supplied to the main gas nozzle can be ignited is set in advance as a set value, and it is detected whether or not the temperature indicated by the detection result of the fluidized bed temperature detector is equal to or higher than the set value. A temperature monitoring unit,
A burner control unit that extinguishes the pilot burner when the temperature indicated by the detection result of the fluidized bed temperature detection unit is equal to or higher than the set value, based on the detection result of the temperature monitoring unit.
A fluidized incinerator device comprising: A fluidized incinerator device provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion,
A freeboard temperature detector for detecting the temperature of the freeboard of the fluidized incinerator,
A fluidized bed temperature detecting section for detecting the temperature of the fluidized bed section of the fluidized incinerator;
The ignitable temperature of the gaseous fuel supplied to the main gas nozzle is set in advance as a set value, and the detection results of both the freeboard temperature detection unit and the fluidized bed temperature detection unit are both equal to or higher than the set value. A temperature monitoring unit for detecting whether or not
A burner control unit that extinguishes the pilot burner when both the detection results of the freeboard temperature detection unit and the fluidized bed temperature detection unit are both equal to or greater than a set value, based on the detection result of the temperature monitoring unit. ,
A fluidized incinerator device comprising: When extinguishing the pilot burner, the burner control unit stops the supply of the gaseous fuel among the gaseous fuel and combustion air supplied to burn the pilot burner, and maintains the supply of the combustion air. The fluidized incinerator apparatus according to claim 2, wherein After extinguishing the pilot burner, the burner control unit, based on the detection result of the temperature monitoring unit, one of the detection result of the freeboard temperature detection unit and the detection result of the fluidized bed temperature detection unit 4. The fluidized incinerator according to claim 2, wherein the pilot burner is ignited when one of the detection results does not reach a predetermined temperature. The free board temperature detector,
A plurality of freeboard temperature sensors provided on the freeboard to detect the temperature of the freeboard;
Among the detection results output from each of the freeboard temperature sensors, a freeboard temperature high selector that selects a detection result indicating the highest temperature,
The fluidized incinerator according to any one of claims 2 to 4, wherein a detection result selected by the freeboard temperature high selector is output to the temperature monitoring unit. The fluidized bed temperature detector,
A plurality of fluidized bed portions, provided in the fluidized bed portion, a fluidized bed temperature sensor for detecting the temperature of the fluidized bed portion,
Among the detection results output from each of the fluidized bed temperature sensors, having a fluidized bed temperature high selector that selects the detection result indicating the highest temperature,
The fluidized incinerator according to any one of claims 2 to 5, wherein a detection result selected by the fluidized bed temperature high selector is output to the temperature monitoring unit. A combustion control method for a gas gun in a fluidized incinerator apparatus provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion,
Detects the temperature of the fluidized bed of a fluidized incinerator,
Detects whether the detection result of the temperature of the fluidized bed portion is equal to or higher than a predetermined temperature that is a temperature at which the gaseous fuel supplied to the main gas nozzle can be ignited, and the detection result is equal to or higher than the predetermined temperature. Wherein the fire of the pilot burner is extinguished. A combustion control method for a gas gun in a fluidized incinerator apparatus provided with a gas gun for igniting a gas fuel injected from a main gas nozzle inserted into a fluidized bed portion by a pilot burner and heating the fluidized bed portion,
Detecting the temperature of the freeboard of the fluidized incinerator,
Detecting the temperature of the fluidized bed portion of the fluidized incinerator,
A gas gun, wherein the detection result of detecting the temperature of the free board and the detection result of detecting the temperature of the fluidized bed portion are both higher than a predetermined temperature, and extinguish the pilot burner. Combustion control method.

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