JP6998481B1 - Combustion furnace equipment control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for a combustion furnace facility capable of accurately grasping a waste supply state by a feeder and stabilizing a waste combustion state.
SOLUTION: This is a control device of a combustion furnace facility including a furnace main body for transporting an incinerator while burning, and a feeder for supplying the incinerator to the furnace main body, and an image of a region including the feeder. An image acquisition unit that acquires a feeder image over time, a brightness change specifying unit that specifies a brightness change of the feeder image, a feeder operation acquisition unit that acquires operation information of the feeder, and a brightness change of the feeder image. A control device for a combustion furnace facility, comprising a supply state determination unit for determining whether or not the supply amount of the incinerator is sufficient based on the identification of the feeder and the operation information of the feeder.
[Selection diagram] Fig. 1

Description

The present disclosure relates to a control device for combustion furnace equipment.

Patent Document 1 describes a technique for adjusting the amount of waste supplied by controlling the stroke length of a pusher type dust feeder based on the specific gravity information obtained from the weight and volume of the input waste in a waste incineration facility. It has been disclosed.
Municipal waste, which is the main incinerated material of waste incinerators, has large fluctuations in properties and high water content. Therefore, when a large amount of municipal waste is supplied into the combustion furnace, the gas temperature and steam flow rate related to combustion temporarily decrease.

Japanese Patent No. 6779779

By the way, in the pusher type dust supply device (feeder) described in Patent Document 1, in the process of supplying waste (incinerator) into the furnace, the waste may be excessively supplied at one time, or the waste may simply be supplied. It may not be supplied properly because it is only compressed. In all of these cases, since the gas temperature and steam flow rate related to combustion decrease, the supply state of waste by the feeder cannot be accurately grasped, and the combustion state of waste may not be stabilized.

This disclosure is made in order to solve the above-mentioned problems, and provides a control device for a combustion furnace facility capable of accurately grasping the state of waste supply by a feeder and stabilizing the state of combustion of waste. With the goal.

In order to solve the above problems, the control device for the incinerator equipment according to the present disclosure includes a combustion main body that conveys the incinerator while burning it, and a feeder that supplies the incinerator to the furnace main body. An image acquisition unit that is a control device for furnace equipment and acquires a feeder image that is an image of a region including the feeder over time, a brightness change specifying unit that specifies a brightness change in the feeder image, and an operation of the feeder. A feeder operation acquisition unit that acquires information, and a supply state determination unit that determines whether or not the supply amount of the incinerator is sufficient based on the identification of the brightness change of the feeder image and the operation information of the feeder. And prepare.

According to the present disclosure, it is possible to provide a control device for a combustion furnace facility capable of accurately grasping the supply state of waste by a feeder and stabilizing the combustion state of waste.

It is a figure which shows the structure of the stoker furnace which concerns on embodiment of this disclosure. It is a functional block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a figure which shows typically the operation of the feeder which concerns on embodiment of this disclosure. It is a figure which shows typically the feeder image generated by the camera which concerns on embodiment of this disclosure. It is a flowchart which shows the operation of the exhaust gas concentration acquisition part of the control device which concerns on embodiment of this disclosure. It is a figure which shows the opening degree of the secondary air damper determined by the secondary air amount control part of the control device which concerns on embodiment of this disclosure. It is a flowchart which shows the operation of the control apparatus which concerns on embodiment of this disclosure. It is a hardware block diagram which shows the structure of the computer which concerns on embodiment of this disclosure.

(Combustion furnace equipment)
Hereinafter, the configuration of the combustion furnace equipment according to the embodiment of the present disclosure will be described with reference to the drawings.
The combustion furnace equipment according to the present embodiment is a waste incinerator furnace that incinerates waste such as municipal waste as incinerator.

FIG. 1 is a diagram showing a configuration of a combustion furnace facility according to the present embodiment. The combustion furnace equipment 100 includes a stoker furnace 1, an exhaust heat recovery boiler 8, a temperature reducing tower 9, a dust collector 11, an outlet flow path 12, and a chimney 13.

(Stalker furnace)
The stoker furnace 1 is a furnace that burns the incinerator 400 while transporting it. Exhaust gas is generated from the stoker furnace 1 as the incinerator 400 is burned by the stoker furnace 1. This exhaust gas is sent to the exhaust heat recovery boiler 8 provided in the upper part of the stoker furnace 1.

The exhaust heat recovery boiler 8 heats water by exchanging heat between the exhaust gas and water to generate steam. This steam is used in external equipment (not shown). The exhaust gas that has passed through the exhaust heat recovery boiler 8 is cooled by the temperature reducing tower 9 and then sent to the dust collector 11. The exhaust gas is discharged into the atmosphere through the outlet flow path 12 and the chimney 13 after the soot and dust are removed by the dust collector 11.

The stoker furnace 1 includes a furnace body 10, a hopper 3, a feeder 31, a stoker 6, a wind box 2, an exhaust chute 14, a push-in blower B, an air preheater H, a fire furnace 7, and a primary air line. It has L1, a secondary air line L2, a camera 220, and a control device 300.

(Furn body)
A processing space V for burning the incinerator 400 is formed inside the furnace body 10. In this processing space V, the incinerator 400 is transported while being burned in one side of the transport direction Da. The incinerated object 400 is discharged to the outside through the discharge chute 14.
One side of the transport direction Da in the present specification is the direction in which the incinerator 400 is directed from the hopper 3 to the discharge chute 14. Further, the other side of the transport direction Da is in the direction opposite to the one side of the transport direction Da.

(Hoppa)
The hopper 3 is an entrance for charging the incinerator 400 into the furnace body 10. In the present embodiment, the incinerator 400 is charged into the hopper 3 from a waste crane (not shown) provided outside the stoker furnace 1.

(feeder)
The feeder 31 is a device that supplies the incinerator 400 charged in the hopper 3 to the processing space V of the furnace body 10. In the present embodiment, the feeder 31 has a plate shape. The feeder 31 advances and retreats in the transport direction Da, so that the incinerator 400 accumulated on the upper surface of the feeder 31 is pushed out to the processing space V at a predetermined timing. The feeder 31 pushes the incinerator 400 into the processing space V to supply the incinerator 400 onto the stoker 6.

(Stalker)
The stoker 6 is composed of a plurality of grate, and the plurality of grates form an upper surface to which the incinerator 400 is supplied in layers from the feeder 31. The grate is composed of a fixed grate and a movable grate. The fixed grate is fixed to the upper surface of the wind box 2. The movable grate moves at a constant speed to one side (downstream side) of the transport direction Da and the other side (upstream side) of the transport direction Da, so that the incinerated object 400 on the movable grate and the fixed grate 400 Is conveyed to the downstream side while stirring and mixing. The stoker 6 transports the incinerator 400, which is supplied in layers on the upper surface, in the horizontal direction toward the discharge chute 14 while burning the incinerator 400.

The furnace body 10 has a drying stage 21, a combustion stage 22, and a post-combustion stage 23 in this order from the other side in the transport direction Da. The drying stage 21, the combustion stage 22, and the post-combustion stage 23 partition the processing space V in the transport direction Da. The drying stage 21 is an area for drying the incinerator 400 supplied from the hopper 3 on the stoker 6 prior to combustion.

The combustion stage 22 and the post-combustion stage 23 are regions for burning the incinerator 400 in a dry state on the stoker 6. In the combustion stage 22, diffusion combustion occurs due to the pyrolysis gas generated from the incinerator 400, and a bright flame F is generated. In the post-combustion stage 23, fixed carbon combustion occurs after diffusion combustion of the incinerated material 400, so that the bright flame F does not occur. Therefore, the bright flame F generated by combustion is mainly formed in the combustion stage 22.

The bright flame F has a burnout length Z at one end of the transport direction Da of the bright flame F. The burnout length Z is a point on the stoker 6 indicating that the diffusion combustion of the incinerated material 400 in the combustion stage 22 is completed, and is used for control for achieving suitable combustion in the stoker furnace 1. It is one of the indicators.

(Bellows)
The air box 2 supplies air from below the stoker 6. A plurality of wind boxes 2 are arranged in the transport direction Da. In the present embodiment, the drying stage 21, the combustion stage 22, and the post-combustion stage 23 are partitioned by the air box 2.

(Discharge chute)
The discharge chute 14 is provided at one end of the rear combustion stage 23 on one side in the transport direction Da. The discharge chute 14 is a device for dropping the incinerator 400, which has become ash after combustion, onto an ash extruder (not shown) located at the lower part of the furnace body 10.

(Push-in blower)
The push-in blower B pumps air toward the inside of the furnace body 10. In the push-in blower B, the pressure of the air to be pressure-fed is determined according to the rotation speed of the fan.
The push-in blower B has a first push-in blower B1 and a second push-in blower B2. The first push-in blower B1 pumps air toward the air box 2 through the primary air line L1 described later. The second push-in blower B2 pumps air toward the furnace 7 through the secondary air line L2 described later.

(Air preheater)
The air preheater H preheats the air pressure-fed from the first push-in blower B1.

(Fire furnace)
The furnace 7 extends upward from the upper part of the furnace body 10. The exhaust gas generated in the treatment space V is sent to the exhaust heat recovery boiler 8 through the furnace 7.

(Primary air line)
The primary air line L1 connects the first push-in blower B1 and the air box 2. By driving the first push-in blower B1, the air required for combustion of the incinerator 400 (hereinafter referred to as primary air) is supplied to the air box 2 through the primary air line L1. The primary air line L1 has a primary air damper L1a. The primary air damper L1a is provided in the middle of the primary air line L1 and regulates the flow rate of the primary air in the primary air line L1 by the opening degree of the damper.

(Secondary air line)
The secondary air line L2 connects the secondary injection blower B2 and the furnace 7. By driving the second push-in blower B2, the air required for combustion of the incinerator 400 (hereinafter referred to as secondary air) is supplied into the incinerator 7 through the secondary air line L2, and the secondary air is supplied. , From above the stoker 6 toward the incinerator 400. The secondary air line L2 has a secondary air damper L2a. The secondary air damper L2a is provided in the middle of the secondary air line L2, and regulates the flow rate of the secondary air by the opening degree of the damper.

(camera)
The camera 220 has an infrared camera and a visible camera, and is provided on the ceiling inside the furnace body 10. In the processed image generated by the camera 220 photographing the inside of the furnace main body 10, the region where each of the feeder 31, the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is captured is specified in advance.

The infrared camera photographs the inside of the furnace body 10 in a wavelength band of 3.5 to 4.5 μm and generates a processed image. Hereinafter, the processed image generated by the infrared camera photographing the inside of the furnace main body 10 is referred to as a feeder image 315a. The imaging range of the camera 220 includes at least a region including the feeder 31. Since the infrared camera shoots in the above wavelength band, it can pass through the bright flame F, and the bright flame F is hardly reflected in the generated feeder image 315a.

The visible camera captures the inside of the furnace body 10 in a wavelength band in the visible wavelength range and generates a processed image. Hereinafter, the processed image generated by the visible camera taking a picture of the inside of the furnace main body 10 is referred to as an in-fire image. At least the bright flame F is included in the imaging range of the camera 220. Since the visible camera shoots in the above wavelength band, it can pass through the bright flame F, and the bright flame F is mainly reflected in the generated in-furnace image. Since the bright flame F is mainly generated in the combustion stage 22, the bright flame F is mainly reflected in the upper half of the image in the furnace.

(Control device)
Subsequently, the configuration of the control device 300 of the present embodiment will be described with reference to FIGS. 2 to 7.
As shown in FIG. 2, the control device 300 includes a feeder operation acquisition unit 310, an image acquisition unit 315, a brightness change specifying unit 320, a feeder operation limiting unit 325, a feeder speed control unit 330, and a supply state determination unit. It includes a 335, an excess supply determination unit 340, an exhaust gas concentration acquisition unit 345, a secondary air amount control unit 350, a combustion state acquisition unit 355, a combustion state determination unit 360, and a combustion control unit 365. ..
The control device 300 is connected to the combustion furnace equipment 100 by wire or wirelessly.

(Feeder operation acquisition unit)
The feeder operation acquisition unit 310 acquires operation information related to the advance / retreat state of the feeder 31.
The feeder operation acquisition unit 310 acquires the operation information of the feeder 31 by the operation specifically described below.

The feeder operation acquisition unit 310 confirms the advancing / retreating state of the feeder 31 and acquires the advancing / retreating amount in the transport direction Da over time. FIG. 3 shows an example of the advancing / retreating state of the feeder 31 confirmed by the feeder operation acquisition unit 310.
For example, the feeder 31 continuously transitions to the state shown in FIG. 3 (b) at a predetermined timing with the position shown in FIG. 3 (a) as the initial position, and continuously to the state shown in FIG. 3 (c). Transition to. As a result, the incinerator 400 laminated in the hopper 3 is pushed out into the furnace body 10 by the feeder 31. When the feeder 31 finishes pushing the incinerator 400 into the furnace main body 10, the feeder 31 returns to the initial position shown in FIG. 3 (a) through the state shown in FIG. 3 (b).

The feeder operation acquisition unit 310 determines the advance / retreat state of the feeder 31 by checking the transition state of the feeder 31 over time.
When the feeder operation acquisition unit 310 confirms that the feeder 31 has transitioned from FIG. 3A to FIG. 3C, it determines that the feeder 31 is moving forward.
When the feeder operation acquisition unit 310 confirms that the feeder 31 has transitioned from FIG. 3 (c) to FIG. 3 (a), it determines that "the feeder 31 is moving backward".
When the feeder operation acquisition unit 310 confirms that the feeder 31 maintains the state shown in FIG. 3A, it determines that the feeder 31 is stopped.

(Image acquisition section)
The image acquisition unit 315 acquires the feeder image 315a captured by the camera 220 over time. In the present embodiment, the image acquisition unit 315 acquires the feeder image 315a, for example, at 1-second intervals.

(Brightness change specific part)
The brightness change specifying unit 320 receives the feeder image 315a acquired by the image acquisition unit 315, and specifies the brightness change in the region including the feeder 31 based on the received feeder image 315a.
The brightness change specifying unit 320 specifies the brightness by the operation specifically described below.

The brightness change specifying unit 320 sequentially receives the feeder image 315a acquired by the image acquisition unit 315 over time from the image acquisition unit 315. FIG. 4 shows an example of the feeder image 315a received by the luminance change specifying unit 320. In the feeder image 315a captured by the camera 220, a region including the feeder 31 (referred to as a specific region 320a in the present embodiment) is specified in advance.

The luminance change specifying unit 320 calculates the average luminance (average value of luminance) of each pixel in the specific region 320a reflected in the feeder image 315a which is sequentially received. In the present embodiment, an example is shown in FIG. 4 in which the specific region 320a is divided into 20 meshes by an imaginary line (dashed-dotted line). That is, the luminance change specifying unit 320 calculates the average luminance calculated from all the pixels of each mesh for each mesh, and for each feeder image 315a.

When the brightness change specifying unit 320 finishes calculating the average brightness of each mesh of one feeder image 315a, each mesh of the feeder image 315a (hereinafter referred to as the next feeder image 315a) to be accepted next to the one feeder image 315a. Calculates the average brightness in. The brightness change specifying unit 320 compares the average brightness of one feeder image 315a in each mesh with the average brightness of the next feeder image 315a in each mesh.

The brightness change specifying unit 320 determines whether or not there is a change in the average brightness between each mesh of one feeder image 315a and each mesh of the next feeder image 315a by a predetermined threshold value or more. In the present embodiment, the image acquisition unit 315 acquires the feeder image 315a at 1-second intervals. Therefore, the time difference between the acquisition time of one feeder image 315a and the acquisition time of the next feeder image 315a is 1 second.

When it is determined that there is a change in the average luminance of one mesh or more, the luminance change specifying unit 320 identifies that "the luminance distribution has a change". When the luminance change specifying unit 320 determines that the average luminance changes between each mesh of one feeder image 315a and each mesh of the next feeder image 315a is less than a predetermined threshold value, the luminance change specifying unit 320 determines that the average luminance is less than a predetermined threshold value. There is no change. " Therefore, the brightness change specifying unit 320 identifies the change in the brightness of each of the plurality of meshes in the feeder image 315a.

In the present embodiment, the incinerator 400 present in the region including the feeder 31 exhibits relatively high brightness when the surface is dry, and exhibits relatively low brightness when the surface is not dry. Therefore, when a part of the incinerator 400 including the dried surface is pushed into the inside of the furnace body 10 by the feeder 31, the undried inner incinerator 400 is exposed. Therefore, the average brightness changes between one mesh of one feeder image 315a and the mesh of the next feeder image 315a corresponding to one mesh.

(Supply status judgment unit)
The supply state determination unit 335 determines whether or not the supply amount of the incinerator 400 is sufficient based on the identification of the brightness change of the feeder image 315a and the operation information of the feeder 31.
When the supply state determination unit 335 determines that the feeder operation acquisition unit 310 "the feeder 31 is moving backward" or "the feeder 31 is stopped", or the brightness change specifying unit 320 "changes in the brightness distribution". When it is specified that "there is no such thing", it is determined that "the supply amount of the incinerator 400 is not sufficient".

The supply state determination unit 335 "covers" when the feeder operation acquisition unit 310 determines that "the feeder 31 is advancing" and the brightness change specifying unit 320 determines that "the luminance distribution has changed". The supply amount of the incinerator 400 is sufficient. "

(Feeder speed control unit)
The feeder speed control unit 330 increases the operating speed of the feeder 31 when the supply state determination unit 335 determines that "the supply amount of the incinerator 400 is not sufficient". The operating speed of the feeder 31 is the speed at which the feeder 31 moves forward (the speed at which the feeder 31 transitions from FIG. 3A to FIG. 3C) and the speed at which the feeder 31 moves backward (FIGS. 3 (c) to 3 (c)). The speed of transition to a)).

(Excess supply judgment unit)
The oversupply determination unit 340 incinerates based on the number of regions (mesh) in which the brightness change is specified when the supply state specifying unit determines that "the supply amount of the incinerator 400 is sufficient". It is determined whether or not the supply amount of the thing 400 is excessive.
The excess supply determination unit 340 accepts the one feeder image 315a and the next feeder image 315a handled by the brightness change specifying unit 320, and the luminance between the accepted one feeder image 315a and the next feeder image 315a. Check the number of meshes whose distribution has changed.

After confirming the number of meshes, the excess supply determination unit 340 determines that "the incinerator 400 is excessively supplied" when a predetermined number or more of meshes cause a change in the luminance distribution.
After confirming the number of meshes, the excess supply determination unit 340 determines that "the incinerator 400 is not excessively supplied" when the brightness distribution changes only in less than a predetermined number of meshes.
In the excess supply determination unit 340 of the present embodiment, for example, a number of 2 or more is preferably adopted as the number of meshes of a predetermined number or more.

(Feeder operation restriction part)
The feeder operation limiting unit 325 limits the amount of operation of the feeder 31 per unit time. In the present embodiment, the amount of movement of the feeder 31 per unit time is, for example, an integral value of the advance / retreat distance A of the feeder 31 per 10 minutes. The feeder operation limiting unit 325 sets an upper limit on the supply amount of the incinerator 400 by controlling the integrated value per unit time, and regulates the supply of the incinerator 400 in excess of a certain amount.

(Exhaust gas concentration acquisition unit)
The exhaust gas concentration acquisition unit 345 determines the CO concentration and the _NOX concentration in the exhaust gas discharged from the furnace body 10 when the excess supply determination unit 340 determines that "the incinerator 400 is excessively supplied". Acquire over time at the timing.
The exhaust gas concentration acquisition unit 345 has an exhaust gas concentration detection sensor 346. The exhaust gas concentration detection sensor 346 is provided in the outlet flow path 12, and has a CO sensor 345a capable of detecting the CO concentration and a NO _X sensor 345b capable of detecting the NO _X concentration.

(Secondary air volume control unit)
The secondary air amount control unit 350 receives the CO concentration and _NOX concentration acquired by the exhaust gas concentration acquisition unit 345, and controls the flow rate of the secondary air flowing through the secondary air line L2 based on the received concentrations. .. The secondary air amount control unit 350 controls the flow rate of the secondary air by the opening degree of the secondary air damper L2a provided in the secondary air line L2.

As shown in FIGS. 5A and 5B, the secondary air amount control unit 350 has a CO index corresponding to the CO concentration acquired by the exhaust gas concentration acquisition unit 345 and an exhaust gas concentration acquisition unit 345. Set the NO _X index according to the NO _X concentration. The CO index and the NO _X index are indexes corresponding to the CO concentration and the NO _X concentration for determining the opening degree of the secondary air damper L2a, respectively.

Hereinafter, the procedure (flow chart) for setting the CO index of the secondary air amount control unit 350 will be described with reference to FIG. 5 (a).
First, the secondary air amount control unit 350 determines whether or not the hourly average of the CO concentration received from the exhaust gas concentration acquisition unit 345 is less than 3 ppm (step S61a). When the secondary air amount control unit 350 determines that the hourly average of the CO concentration is less than 3 ppm (step S61a; Yes), the CO index is set to “5” (step S65a).

When the secondary air amount control unit 350 determines that the CO concentration is not less than 3 ppm (step S61a; No), it determines whether the hourly average of the CO concentration is 3 ppm or more and less than 6 ppm (step S61a; No). Step S62a). When the secondary air amount control unit 350 determines that the hourly average of the CO concentration is 3 ppm or more and less than 6 ppm (step S62a; Yes), the CO index is set to “4” (step S66a).

When the secondary air amount control unit 350 determines that the CO concentration is not 3 ppm or more and less than 6 ppm (step S62a; No), the secondary air amount control unit 350 determines whether or not the hourly average of the CO concentration is 6 ppm or more and less than 9 ppm. (Step S63a). When the secondary air amount control unit 350 determines that the hourly average of the CO concentration is 6 ppm or more and less than 9 ppm (step S63a; Yes), the CO index is set to “3” (step S67a).

When the secondary air amount control unit 350 determines that the CO concentration is not 6 ppm or more and less than 9 ppm (step S63a; No), the secondary air amount control unit 350 determines whether or not the hourly average of the CO concentration is 9 ppm or more and less than 12 ppm. (Step S64a). When the secondary air amount control unit 350 determines that the hourly average of the CO concentration is 9 ppm or more and less than 12 ppm (step S64a; Yes), the CO index is set to “2” (step S68a).

When the secondary air amount control unit 350 determines that the CO concentration is not 9 ppm or more and less than 12 ppm (step S64a; No), the CO index is set to “1” (step S69a).

Hereinafter, the procedure (flow chart) for setting the _NOX index of the secondary air amount control unit 350 will be described with reference to FIG. 5 (b).
First, the secondary air amount control unit 350 determines whether or not the hourly average of the NO _X concentration received from the exhaust gas concentration acquisition unit 345 is less than 95 ppm (step S61b). When the secondary air amount control unit 350 determines that the hourly average of the CO concentration is less than 95 ppm (step _S61b ; Yes), the NOX index is set to “5” (step S65b).

When the secondary air amount control unit 350 determines that the NO _X concentration is not less than 95 ppm (step S61b; No), it determines whether the hourly average of the NO _X concentration is 95 ppm or more and less than 100 ppm. (Step S62b). When the secondary air amount control unit 350 determines that the hourly average of the NO _X concentration is 95 ppm or more and less than 100 ppm (step S62b; Yes), the NO _X index is set to “4” (step S66b). ).

When the secondary air amount control unit 350 determines that the NO _X concentration is 95 ppm or more and less than 100 ppm (step S62b; No), whether or not the hourly average of the NO _X concentration is 100 ppm or more and less than 105 ppm. Is determined (step S63b). When the secondary air amount control unit 350 determines that the hourly average of the NO _X concentration is 100 ppm or more and less than 105 ppm (step S63b; Yes), the NO _X index is set to “3” (step S67b). ).

When the secondary air amount control unit 350 determines that the NO _X concentration is not 100 ppm or more and less than 105 ppm (step S63b; No), whether or not the hourly average of the NO _X concentration is 105 ppm or more and less than 110 ppm. Is determined (step S64b). When the secondary air amount control unit 350 determines that the hourly average of the NO _X concentration is 105 ppm or more and less than 110 ppm (step S64b; Yes), the NO _X index is set to “2” (step S68b). ).

When the secondary air amount control unit 350 determines that the NO _X concentration is not 105 ppm or more and less than 110 ppm (step S64b; No), the NO _X index is set to “1” (step S69b).

When the secondary air volume control unit 350 finishes setting the CO index and the NO _X index, the number of meshes whose CO index and NO _X index and the luminance distribution confirmed by the oversupply determination unit 340 are changed is adjusted. The secondary air flow rate is controlled based on this.
The secondary air amount control unit 350 controls the flow rate of the secondary air by controlling the opening degree of the secondary air damper L2a.

FIG. 6 shows a table of damper opening conditions according to the number of meshes whose luminance distribution is changed, that is, the degree of supply of the incinerator 400 confirmed by the excess supply determination unit 340.
FIG. 6A shows the secondary air amount control unit 350 adopted in normal operation (when the excess supply determination unit 340 determines that “the supply amount of the incinerator 400 is not excessive”). The base condition of the opening degree of the next air damper L2a is illustrated. The opening degree of the secondary air damper L2a is determined based on the CO index and the _NOX index set by the secondary air amount control unit 350. In the present embodiment, the opening degree of the damper shown in FIG. 6 is shown as a ratio (%) when the fully opened state is 100 (%).

6 (b) and 6 (c) show a secondary air amount controlled by the secondary air amount control unit 350 when the excess supply determination unit 340 determines that the supply amount of the incinerator 400 is excessive. The condition of the opening degree of the air damper L2a is illustrated. FIG. 6B shows an intermediate condition of the opening degree of the secondary air damper L2a, and FIG. 6C shows the maximum condition of the opening degree of the secondary air damper L2a.

In the maximum condition shown in FIG. 6 (c), the opening degree is set to be larger than the intermediate condition shown in FIG. 6 (b) regardless of the value of the CO index and the _NOX index. That is, the maximum condition is a condition adopted in a state where the incinerator 400 is difficult to burn in a combustion furnace in which the incinerator 400 is in an excessive supply state. Whether the opening degree of the secondary air damper L2a is set as an intermediate condition or a maximum condition is preferably selected according to the supply degree of the incinerator 400.

In the present embodiment, the opening condition of the secondary air damper L2a is selected based on the number of meshes in which the luminance distribution confirmed by the excess supply determination unit 340 is changing. Therefore, if the number of meshes that are changing the luminance distribution confirmed by the excess supply determination unit 340 is within a predetermined range, the intermediate condition is selected, and if it is equal to or more than the predetermined number, the maximum condition is selected. To.

(Combustion state acquisition unit)
The combustion state acquisition unit 355 acquires the combustion state of the incinerator 400 inside the furnace body 10. In the present embodiment, the combustion state of the incinerator 400 is, for example, the temperature of the exhaust gas generated by the combustion of the incinerator 400 inside the furnace body 10.
The combustion state acquisition unit 355 has an exhaust gas thermometer 355a. The exhaust gas thermometer 355a is provided inside the exhaust heat recovery boiler 8. The exhaust gas thermometer 355a measures the temperature of the exhaust gas generated from the inside of the furnace main body 10 and sent to the exhaust heat recovery boiler 8 via the furnace 7.

(Combustion state judgment unit)
The combustion state determination unit 360 determines whether or not the incinerator 400 has a combustion defect based on the combustion state acquired by the combustion state acquisition unit 355.
The combustion state determination unit 360 receives the exhaust gas temperature acquired by the combustion state acquisition unit 355.

When the combustion state determination unit 360 compares the received exhaust gas temperature with a predetermined temperature preset for comparison and confirms that the temperature is equal to or higher than the predetermined temperature, "combustion failure has not occurred". ".
The combustion state determination unit 360 compares the received exhaust gas temperature with a predetermined temperature for comparison, and when it is confirmed that the temperature is lower than the predetermined temperature for comparison, it determines that "combustion is defective". ..

(Combustion control unit)
When the combustion control unit 365 determines that the supply state determination unit 335 "sufficiently supplies the incinerator 400" and the combustion state determination unit 360 determines that "combustion is defective". , Control to promote combustion inside the furnace body 10.
The combustion control unit 365 calculates the control amount based on the combustion state acquired by the combustion state acquisition unit 355.
After calculating the controlled amount, the combustion control unit 365 appropriately performs one or more of the controls (a) to (d) described below.

(A) Increase in primary air volume The combustion control unit 365 transmits a command to increase the rotation speed of the first push-in blower B1 to the first push-in blower B1. When the first push-in blower B1 receives the command transmitted from the combustion control unit 365, the rotation speed is increased by the control amount. That is, the combustion control unit 365 increases the flow rate of the primary air blown from the first push-in blower B1 to the air box 2 through the primary air line L1.

(B) Increasing the damper opening degree The combustion control unit 365 transmits a command to increase the opening degree of the primary air damper L1a to the primary air damper L1a provided in the primary air line L1. When the primary air damper L1a receives the command transmitted from the combustion control unit 365, the primary air damper L1a increases the damper opening degree by the control amount. That is, the combustion control unit 365 increases the flow rate of the primary air blown from the first push-in blower B1 to the air box 2 through the primary air line L1.

(C) Increase in primary air temperature The combustion control unit 365 transmits a command to increase the preheating temperature to the air preheater H. When the air preheater H receives the command transmitted from the combustion control unit 365, the air preheater H raises the preheating temperature by the control amount. That is, the combustion control unit 365 raises the temperature of the primary air blown from the first push-in blower B1 to the air box 2 through the primary air line L1.

(D) Increase in grate speed The combustion control unit 365 transmits a command to increase the speed of the movable grate to the stoker 6. Upon receiving the command transmitted from the combustion control unit 365, the stoker 6 increases the movable speed of the movable grate by the control amount. That is, the combustion control unit 365 advances the stirring of the incinerator 400 in the combustion furnace.

(Operation of control device)
Subsequently, the operation of the control device 300 will be described with reference to FIG. 7. FIG. 7 is a flowchart showing the operation of the control device 300.

The feeder operation acquisition unit 310 acquires the operation information of the feeder 31.
The image acquisition unit 315 acquires the feeder image 315a over time (step S1).

The brightness change specifying unit 320 specifies the brightness change based on the feeder image 315a acquired by the image acquisition unit 315 over time.
The supply state determination unit 335 determines whether or not the supply amount of the incinerator 400 is sufficient based on the brightness change specified by the brightness change specifying unit 320 and the operation information of the feeder 31 acquired by the feeder operation acquisition unit 310. (Step S2).

When the supply state determination unit 335 determines that the supply amount of the incinerator 400 is not sufficient (step S2; No), the feeder speed control unit 330 increases the operating speed of the feeder 31 (step S3). ..
After the feeder speed control unit 330 increases the operating speed of the feeder 31, the processing of the control device 300 returns to step S2.

When the supply state determination unit 335 determines that the supply amount of the incinerator 400 is sufficient (step S2; Yes), the oversupply determination unit 340 determines whether or not the incinerator 400 is excessively supplied. (Step S4).

When the excess supply determination unit 340 determines that the supply amount of the incinerator 400 is excessive (step S4; Yes), the exhaust gas concentration acquisition unit 345 determines the CO concentration and NO in the exhaust gas discharged from the furnace body 10. Acquire the _X concentration (step S5).

The secondary air amount control unit 350 receives the CO concentration and the _NOX concentration acquired by the exhaust gas concentration acquisition unit 345, and controls the flow rate of the secondary air flowing through the secondary air line L2 based on the respective concentrations (step). S6).

When the excess supply determination unit 340 determines that the supply amount of the incinerator 400 is not excessive (step S4; No), the combustion state acquisition unit 355 acquires the combustion state of the incinerator 400.
The combustion state determination unit 360 determines whether or not the incinerator 400 has a combustion defect based on the combustion state acquired by the combustion state acquisition unit 355 (step S7).

When the combustion state determination unit 360 determines that the combustion is not defective (step S2; No), the control device 300 primary ends the operation.

When the combustion state determination unit 360 determines that the combustion is defective (step S2; Yes), the combustion control unit 365 calculates the control amount based on the combustion state acquired by the combustion state acquisition unit 355 (step S2; Yes). S8).

After calculating the controlled amount, the combustion control unit 365 performs control to promote combustion inside the furnace body 10 (step S9).

After the combustion control unit 365 performs control to promote combustion, the combustion state acquisition unit 355 acquires the combustion state of the incinerator 400 again.
The combustion state determination unit 360 determines again whether or not the incinerated object 400 is a combustion defect based on the combustion state acquired again by the combustion state acquisition unit 355 (step S10).

When the combustion state determination unit 360 determines that the combustion is defective (step S10; Yes), the feeder operation limiting unit 325 limits the amount of operation of the feeder 31 per unit time (step S11). After the feeder operation limiting unit 325 limits the amount of operation of the feeder 31 per unit time, the process of the control device 300 returns to step S8.
When the combustion state determination unit 360 determines that the combustion is not defective (step S10; No), the control device 300 primary ends the operation.

The control device 300 repeats the above series of operations while the combustion furnace equipment 100 is in operation.

(Action effect)
The control device 300 of the incinerator equipment 100 according to the present embodiment is a combustion furnace equipment including a furnace main body 10 that conveys the incinerator 400 while burning it, and a feeder 31 that supplies the incinerator 400 to the furnace main body 10. The control device 300 of 100, the image acquisition unit 315 that acquires the feeder image 315a that is an image of the region including the feeder 31 over time, the brightness change specifying unit 320 that specifies the brightness change of the feeder image 315a, and the feeder. Based on the feeder operation acquisition unit 310 that acquires the operation information of the 31 and the identification of the brightness change of the feeder image 315a and the operation information of the feeder 31, it is determined whether or not the supply amount of the incinerator 400 is sufficient. A supply state determination unit 335 is provided.

According to the above configuration, it is possible to specify the change in brightness and acquire the operation information of the feeder 31 at the same time, so that it is possible to accurately grasp whether or not the supply amount of the incinerator 400 by the feeder 31 is sufficient. can. Therefore, it is possible to appropriately take measures to stabilize the combustion state of the incinerator 400 depending on whether or not the supply amount of the incinerator 400 is sufficient.

By the way, the ash of the incinerator 400 floating inside the furnace body 10 may be reflected in the imaging range of the camera 220. When the ash is reflected in the specific region 320a, the brightness of the region in which the ash is reflected tends to decrease. Therefore, even though the incinerator 400 is not supplied to the inside of the furnace main body 10, the brightness is lowered as in the case where the undried incinerator 400 is exposed. There is a possibility that "there is a change in the luminance distribution" is erroneously specified between one feeder image 315a and the next feeder image 315a.
According to the above configuration, since the feeder operation acquisition unit 310 can grasp the advancing / retreating state of the feeder 31, even if the brightness change specifying unit 320 is affected by the ash of the incinerator 400 and makes an erroneous identification, the feeder By combining with the advance / retreat state information of 31, it is possible to avoid a malfunction of the control device 300.

Further, the control device 300 of the combustion furnace facility 100 according to the present embodiment has a combustion state acquisition unit 355 that acquires the combustion state of the incinerated object 400, and whether or not the incinerated object 400 has a combustion defect based on the combustion state. Combustion that controls to promote the combustion of the furnace body 10 when it is determined that the supply amount of the combustion state determination unit 360 to be determined and the incinerated object 400 is sufficient and it is determined that the combustion is defective. A control unit 365 is further provided.

According to the above configuration, control for promoting combustion according to the combustion state of the incinerator 400 can be preferably performed. As a result, the combustion state of the incinerator 400 can be stabilized.

Further, the control device 300 of the combustion furnace equipment 100 according to the present embodiment further includes a feeder operation limiting unit 325 that limits the operating amount of the feeder 31 per unit time.

With the above configuration, the supply amount of the incinerator 400 on the feeder 31 and around the feeder 31 to the inside of the furnace body 10 can be adjusted. Therefore, even if a large amount of the incinerator 400 is supplied to the inside of the furnace body 10, the amount of the subsequent supply of the incinerator 400 to the inside of the furnace body 10 is adjusted by the operating amount per unit time of the feeder 31. can do. Therefore, the combustion state of the incinerator 400 can be stabilized.

Further, the control device 300 of the combustion furnace equipment 100 according to the present embodiment includes a feeder speed control unit 330 that increases the operating speed of the feeder 31 when it is determined that the supply amount of the incinerator 400 is not sufficient. Further prepare.

With the above configuration, the supply amount of the incinerator 400 on the feeder 31 and around the feeder 31 to the inside of the furnace body 10 can be adjusted. Therefore, even if the incinerator 400 is not properly supplied to the inside of the furnace body 10, the supply amount of the incinerator 400 to the inside of the furnace body 10 can be increased by increasing the operating speed of the feeder 31. Therefore, the combustion state of the incinerator 400 can be promoted.

Further, in the control device 300 of the incinerator equipment 100 according to the present embodiment, the brightness change specifying unit 320 identifies the change in the brightness of each of the plurality of image regions in the feeder image 315a, and the supply state determination unit 335 at least Based on the identification of the brightness change in one image area and the operation information of the feeder 31, it is determined whether or not the supply amount of the incinerator 400 is satisfied, and the supply amount of the incinerator 400 is satisfied. Further, an excess supply determination unit 340 for determining whether or not the supply amount of the incinerator 400 is excessive is provided based on the number of regions in which the luminance change is specified.

With the above configuration, measures for stabilizing the combustion state of the incinerated material 400 can be appropriately taken depending on whether or not the supply amount of the incinerated material 400 is excessive.

Further, in the control device 300 of the combustion furnace equipment 100 according to the present embodiment, when it is determined that the supply amount of the incinerator 400 is excessive, the amount of secondary air additionally supplied to the furnace main body 10 increases. A secondary air amount control unit 350 for controlling the above is further provided.

With the above configuration, the combustion of the incinerator 400 can be promoted. Therefore, when the supply amount of the incinerator 400 is excessive, the combustion state of the incinerator 400 can be stabilized.

Further, the control device 300 of the combustion furnace equipment 100 according to the present embodiment further includes an exhaust gas concentration acquisition unit 345 for acquiring the CO concentration and the _NOX concentration in the exhaust gas discharged from the furnace main body 10, and is a secondary air amount control unit. The 350 controls the amount of secondary air based on the CO concentration and the NO _X concentration.

With the above configuration, even when the exhaust gas concentration has increased, the exhaust gas concentration can be stabilized by controlling the secondary air amount.

[Other embodiments]
Although the embodiments of the present disclosure have been described in detail with reference to the drawings, the specific configuration is not limited to the configurations of the respective embodiments, and the addition of the configurations within the range not deviating from the gist of the present disclosure. It can be omitted, replaced, and other changes. The present disclosure is not limited to embodiments.

Note that FIG. 8 is a hardware configuration diagram showing the configuration of the computer 1100 according to the present embodiment.
The computer 1100 includes a processor 1110, a main memory 1120, a storage 1130, and an interface 1140.

The control devices 300 and 305 described above are mounted on the computer 1100. The operation of each of the above-mentioned processing units is stored in the storage 1130 in the form of a program. The processor 1110 reads a program from the storage 1130, expands it into the main memory 1120, and executes the above processing according to the program. Further, the processor 1110 secures a storage area corresponding to each of the above-mentioned storage units in the main memory 1120 according to the program.

The program may be intended to realize some of the functions exerted by the computer 1100. For example, the program may exert its function in combination with another program already stored in the storage 1130, or in combination with another program mounted on another device. Further, the computer 1100 may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions realized by the processor 1110 may be realized by the integrated circuit.

Examples of the storage 1130 include magnetic disks, magneto-optical disks, semiconductor memories, and the like. The storage 1130 may be internal media directly connected to the bus of computer 1100, or external media connected to computer 1100 via interface 1140 or a communication line. When this program is distributed to the computer 1100 via a communication line, the distributed computer 1100 may expand the program to the main memory 1120 and execute the above processing. In the third and fourth embodiments, the storage 1130 is a non-temporary tangible storage medium.

Further, the program may be for realizing a part of the above-mentioned functions.
Further, the program may be a so-called difference file (difference program) that realizes the above-mentioned function in combination with another program already stored in the storage 1130.

Further, the control device 300 may further include an O ₂ concentration acquisition unit for acquiring the O ₂ concentration in the exhaust gas discharged from the furnace main body 10. Further, the feeder speed control unit 330 replaces the configuration described in the above embodiment with the operation of the feeder 31 based on the amount of heat input to the incinerator 400 estimated based on the temperature of the exhaust gas and the O ₂ concentration. The speed may be determined.

In this configuration, the temperature of the exhaust gas is measured, for example, by the exhaust gas thermometer 355a possessed by the combustion state acquisition unit 355. As the temperature of the primary air, for example, the set temperature of the air preheater H for preheating the primary air flowing in the primary air line L1 is adopted.
The O ₂ concentration acquisition unit is provided in the outlet flow path 12. For example, a zirconia oxygen sensor is adopted as the O ₂ concentration acquisition unit.

The amount of heat input to the incinerator 400 inside the furnace body 10 can be estimated based on the measured temperature of the exhaust gas and the O ₂ concentration in the exhaust gas. In this configuration, an ideal heat input amount (hereinafter referred to as an ideal heat input amount) to the incinerator 400, which is a target during the operation of the combustion furnace facility 100, is set. Then, the amount of heat input to the incinerator 400 estimated based on the temperature of the exhaust gas measured during the operation of the combustion furnace facility 100 and the O ₂ concentration in the exhaust gas (hereinafter referred to as the estimated amount of heat input) is ideal. Whether it is larger or smaller than the amount of heat is confirmed in real time by taking the difference between the two.

When the estimated heat input amount is smaller than the ideal heat input amount, the feeder speed control unit 330 increases the operating speed of the feeder 31 by the amount corresponding to the magnitude of the difference.
When the estimated heat input amount is larger than the ideal heat input amount, the feeder speed control unit 330 reduces the operating speed of the feeder 31 by the amount corresponding to the magnitude of the difference.

Since the operating speed of the feeder 31 is controlled by these operations, the supply amount of the incinerator 400 as fuel to the inside of the furnace main body 10 is optimized, and the estimated heat input amount can be brought close to the ideal heat input amount. Therefore, the supply amount of the incinerated material 400 can be quickly optimized, and the exhaust gas concentration and the steam flow rate can be stabilized.

Hereinafter, the method for estimating the amount of heat input in the above configuration will be outlined.
The estimated amount of heat input (Q) into the furnace body 10 is the exhaust gas mass flow rate ( _mg ) determined based on the O ₂ concentration, the exhaust gas temperature (T _g ), and the primary air temperature ( _Ta ). , Is obtained by the following equation (1).
Q = Cp × _{mg × (T g −} T _a ) + H… (1)

Here, Cp represents the constant pressure molar specific heat, and H represents the heat loss. The constant pressure molar specific heat (Cp) is a numerical value uniquely obtained in an environment of constant pressure change. The heat loss (H) is the amount of heat loss including the heat dissipation component, the unburned loss component, and the sensible heat component carried out from the ash, and is a variable directly proportional to the estimated heat input amount Q.

Further, the feeder 31 described in the above embodiment is configured to continuously transition from the state shown in FIG. 3A to the state shown in FIG. 3C and then return to the state shown in FIG. 3A. However, it is not limited to this configuration. The feeder 31 may be configured to continuously transition from the state shown in FIG. 3A to the state shown in FIG. 3B and then return to the state shown in FIG. 3A.

Further, the CO index and the _NOX index in the secondary air amount control unit 350 described in the above embodiment are divided into five levels, but are not limited to the five levels. Further, in the evaluation of the CO concentration and the NO _X concentration when setting the CO index and the NO _X index, the numerical value of the ratio (ppm) shown in the above embodiment differs depending on the plant in which the combustion furnace equipment 100 is operated. The numerical value of the ratio shown above is an example, and is not limited to the numerical value of the ratio shown above.

Further, the table of damper opening conditions (FIG. 6) referred to by the secondary air amount control unit 350 described in the above embodiment is shown in three stages according to the supply degree of the incinerator 400. It is not limited to three stages. Further, the opening degree shown in the table is an example, and is not limited to the opening degree shown in each table of FIGS. 6 (a), 6 (b), and 6 (c). ..

Further, in the above embodiment, the combustion furnace equipment 100 is a waste incinerator stoker furnace, but the combustion furnace equipment 100 is not limited to the waste incinerator stoker furnace. The combustion furnace equipment 100 may be a kiln stoker furnace, a biomass fluidized bed boiler, a sludge incinerator, or the like.

[Additional Notes]
The control device for the combustion furnace equipment according to the embodiment is grasped as follows, for example.

(1) The control device 300 of the incinerator equipment 100 according to the first aspect includes a furnace main body 10 that conveys the incinerator 400 while burning it, and a feeder 31 that supplies the incinerator 400 to the furnace main body 10. The control device 300 of the incinerator facility 100 comprising the The incinerator 400 is based on the brightness change specifying unit 320, the feeder operation acquisition unit 310 for acquiring the operation information of the feeder 31, the identification of the brightness change of the feeder image 315a, and the operation information of the feeder 31. A supply state determination unit 335 for determining whether or not the supply amount is sufficient is provided.

As a result, it is possible to specify the change in brightness and acquire the operation information of the feeder 31 at the same time, so that it is possible to accurately grasp whether or not the supply amount of the incinerator 400 by the feeder 31 is sufficient. Therefore, it is possible to appropriately take measures to stabilize the combustion state of the incinerator 400 depending on whether or not the supply amount of the incinerator 400 is sufficient.

(2) The control device 300 of the combustion furnace equipment 100 according to the second aspect is the control device 300 of the combustion furnace equipment 100 of (1), and is a combustion state acquisition unit that acquires the combustion state of the incinerated object 400. It is determined that the supply amounts of the 355 and 460, the combustion state determination unit 360 for determining whether or not the incinerated object 400 is defective in combustion based on the combustion state, and the incinerated object 400 are satisfied, and , A combustion control unit 365 that controls to promote combustion of the furnace body 10 when it is determined that the combustion is defective may be further provided.

As a result, control for promoting combustion according to the combustion state of the incinerator 400 can be preferably performed. Therefore, the combustion state of the incinerator 400 can be stabilized.

(3) The control device 300 of the combustion furnace equipment 100 according to the third aspect is the control device 300 of the combustion furnace equipment 100 of (2), and is a feeder operation that limits the operation amount of the feeder 31 per unit time. A limiting unit 325 may be further provided.

Thereby, the supply amount of the incinerator 400 on the feeder 31 and around the feeder 31 to the inside of the furnace main body 10 can be adjusted. Therefore, even if a large amount of the incinerator 400 is supplied to the inside of the furnace body 10, the amount of the subsequent supply of the incinerator 400 to the inside of the furnace body 10 is adjusted by the operating amount per unit time of the feeder 31. can do.

(4) The control device 300 of the combustion furnace equipment 100 according to the fourth aspect is the control device 300 of the combustion furnace equipment 100 according to any one of (1) to (3), and the supply amount of the incinerator 400. May further include a feeder speed control unit 330 that increases the operating speed of the feeder 31 when it is determined that is not satisfied.

Thereby, the supply amount of the incinerator 400 on the feeder 31 and around the feeder 31 to the inside of the furnace main body 10 can be adjusted. Therefore, even if the incinerator 400 is not properly supplied to the inside of the furnace body 10, the supply amount of the incinerator 400 to the inside of the furnace body 10 can be increased by increasing the operating speed of the feeder 31.

(5) The control device 300 of the combustion furnace equipment 100 according to the fifth aspect is the control device 300 of the combustion furnace equipment 100 according to any one of (1) to (3), and is discharged from the furnace body 10. The operating speed of the feeder 31 is determined based on the O ₂ concentration acquisition unit that acquires the O ₂ concentration in the exhaust gas and the amount of heat input to the incinerator 400 estimated based on the temperature of the exhaust gas and the O ₂ concentration. A feeder speed control unit 330 to be changed may be further provided.

As a result, by controlling the operating speed of the feeder 31, the supply amount of the incinerator 400 to the inside of the furnace body 10 is optimized, and the estimated heat input amount can be brought close to the target heat input amount. Therefore, the supply amount of the incinerated material 400 can be quickly optimized, and the exhaust gas concentration and the steam flow rate can be stabilized.

(6) The control device 300 of the incinerator equipment 100 according to the sixth aspect is the control device 300 of the incinerator equipment 100 according to any one of (1) to (5), and the luminance change specifying unit 320 is the control device 300. The change in the luminance of each of the plurality of image regions in the feeder image 315a is specified, and the supply state determination unit 335 is based on the identification of the luminance change in at least one of the image regions and the operation information of the feeder 31. It is determined whether or not the supply amount of the incinerator 400 is sufficient, and when it is determined that the supply amount of the incinerator 400 is sufficient, the number of the regions in which the brightness change is specified. Based on the above, an excess supply determination unit 340 for determining whether or not the supply amount of the incinerator 400 is excessive may be further provided.

Thereby, measures for stabilizing the combustion state of the incinerated material 400 can be appropriately taken depending on whether or not the supply amount of the incinerated material 400 is excessive.

(7) The control device 300 of the combustion furnace equipment 100 according to the seventh aspect is the control device 300 of the combustion furnace equipment 100 of (6), and it is determined that the supply amount of the incinerator 400 is excessive. In this case, a secondary air amount control unit 350 that controls the amount of secondary air additionally supplied to the furnace body 10 may be further provided.

This makes it possible to promote the combustion of the incinerator 400. Therefore, when the supply amount of the incinerator 400 is excessive, the combustion state of the incinerator 400 can be stabilized.

(8) The control device 300 of the combustion furnace equipment 100 according to the eighth aspect is the control device 300 of the combustion furnace equipment 100 of (7), and the CO concentration and _NOX in the exhaust gas discharged from the furnace body 10 The exhaust gas concentration acquisition unit 345 for acquiring the concentration may be further provided, and the secondary air amount control unit 350 may control the secondary air amount based on the CO concentration and the NO _X concentration.

As a result, even when the exhaust gas concentration has increased, the exhaust gas concentration can be stabilized by controlling the secondary air amount.

(9) The control device 300 of the combustion furnace equipment 100 according to the ninth aspect is the control device 300 of the combustion furnace equipment 100 according to any one of (1) to (8), and the feeder image 315a is 3. It may be generated by a camera 220 capable of photographing in a wavelength band of 5 to 4.5 μm.

1 ... Stoker furnace 2 ... Wind box 3 ... Hopper 6 ... Stoker 7 ... Fire furnace 8 ... Exhaust heat recovery boiler 9 ... Heat reduction tower 10 ... Furnace body 11 ... Dust collector 12 ... Outlet flow path 13 ... Chimney 14 ... Exhaust chute 21 ... Drying stage 22 ... Combustion stage 23 ... Post-combustion stage 31 ... Feeder 100 ... Combustion furnace equipment 220 ... Camera 250 ... Denitration device 250a ... Blowing nozzle 250b ... Denitration line 260 ... Sprinkler 260a ... Sprinkler nozzle 260b ... Sprinkling line 300 ... Control Device 310 ... Feeder operation acquisition unit 315 ... Image acquisition unit 315a ... Feeder image 320 ... Brightness change specification unit 320a ... Specific area 325 ... Feeder operation restriction unit 330 ... Feeder speed control unit 335 ... Supply status determination unit 340 ... Excess supply determination unit 345 ... Exhaust gas concentration acquisition unit 345a ... CO sensor 345b ... NO _X sensor 346 ... Exhaust gas concentration detection sensor 350 ... Secondary air volume control unit 355 ... Combustion state acquisition unit 355a ... Exhaust gas thermometer 360 ... Combustion state determination unit 365 ... Combustion control Part 400 ... Incinerated object 1100 ... Computer 1110 ... Processor 1120 ... Main memory 1130 ... Storage 1140 ... Interface A ... Advance / retreat distance B ... Push-in blower B1 ... First push-in blower B2 ... Second push-in blower Da ... Transport direction F ... Bright flame H ... Air preheater L1 ... Primary air line L1a ... Primary air damper L2 ... Secondary air line L2a ... Secondary air damper V ... Processing space Z ... Burnout length

Claims (9)

A control device for combustion furnace equipment including a furnace body for transporting an incinerator while burning, and a feeder for supplying the incinerator to the furnace body.
An image acquisition unit that acquires a feeder image, which is an image of an area including the feeder, over time, and an image acquisition unit.
A luminance change specifying unit that specifies a luminance change in the feeder image,
The feeder operation acquisition unit that acquires the operation information of the feeder, and
A supply state determination unit that determines whether or not the supply amount of the incinerator is sufficient based on the identification of the brightness change of the feeder image and the operation information of the feeder.
Combustion furnace equipment control device equipped with. A combustion state acquisition unit that acquires the combustion state of the incinerated object,
A combustion state determination unit that determines whether or not the incinerated object is defective in combustion based on the combustion state,
A combustion control unit that controls to promote combustion of the furnace body when it is determined that the supply amount of the incinerator is sufficient and it is determined that the combustion is defective.
The control device for the combustion furnace equipment according to claim 1. The control device for a combustion furnace facility according to claim 2, further comprising a feeder operation limiting unit that limits the operating amount of the feeder per unit time. The combustion furnace equipment according to any one of claims 1 to 3, further comprising a feeder speed control unit that increases the operating speed of the feeder when it is determined that the supply amount of the incinerator is not sufficient. Control device. An O ₂ concentration acquisition unit that acquires the O ₂ concentration in the exhaust gas discharged from the furnace body,
A feeder speed control unit that changes the operating speed of the feeder based on the amount of heat input to the incinerator estimated based on the temperature of the exhaust gas and the O ₂ concentration.
The control device for the combustion furnace equipment according to any one of claims 1 to 3. The luminance change specifying unit identifies a change in luminance of each of a plurality of image regions in the feeder image.
The supply state determination unit determines whether or not the supply amount of the incinerator is sufficient based on the identification of the luminance change in at least one image region and the operation information of the feeder.
When it is determined that the supply amount of the incinerator is sufficient, it is determined whether or not the supply amount of the incinerator is excessive based on the number of the regions in which the brightness change is specified. The control device for a combustion furnace facility according to any one of claims 1 to 5, further comprising a supply determination unit. The sixth aspect of claim 6 further includes a secondary air amount control unit that controls the amount of secondary air additionally supplied to the furnace body to increase when it is determined that the supply amount of the incinerator is excessive. The control device for the combustion furnace equipment described. Further, an exhaust gas concentration acquisition unit for acquiring the CO concentration and the _NOX concentration in the exhaust gas discharged from the furnace body is provided.
The control device for a combustion furnace facility according to claim 7, wherein the secondary air amount control unit controls the secondary air amount based on the CO concentration and the NO _X concentration. The control device for a combustion furnace facility according to any one of claims 1 to 8, wherein the feeder image is generated by a camera capable of photographing in a wavelength band of 3.5 to 4.5 μm.

Images