WO2018003223A1

WO2018003223A1 - Refuse incineration facility and control method for refuse incineration facility

Info

Publication number: WO2018003223A1
Application number: PCT/JP2017/014212
Authority: WO
Inventors: 博史奥田; 陽介岩崎; 健向井; 宏史田中; 惇三島
Original assignee: 川崎重工業株式会社
Priority date: 2016-06-28
Filing date: 2017-04-05
Publication date: 2018-01-04
Also published as: KR102236283B1; CN107543174B; JP7015103B2; KR20190011282A; JP2018004113A; CN207019078U; PH12018502692A1; CN107543174A

Abstract

A refuse incineration facility according to one aspect of the present invention comprises: an incinerator in which the refuse dried by a drying unit is burned by a combustion unit; a boiler which generates steam using the heat generated by burning refuse; a refuse feeding device which feeds refuse to the drying unit of the incinerator; a gas detection device which detects the properties of furnace gas containing the gas generated by the dry unit; and a control device which calculates, on the basis of the properties of the furnace gas detected by the gas detection device, an optimum accumulation amount such that a desired heating value is generated when the refuse in the drying unit is burned, and which controls the refuse feeding device so that the amount of refuse accumulated in the drying unit becomes the optimum accumulation amount.

Description

Waste incineration equipment and control method of waste incineration equipment

The present invention relates to a waste incineration facility and a method for controlling the waste incineration facility.

In a waste incineration facility equipped with a boiler, steam is generated using heat generated by the combustion of waste. However, because the amount of heat generated by the garbage varies depending on the content (the amount of heat generated when the waste per unit weight is completely burned), the amount of heat input to the boiler is not necessarily the same even if the same weight of waste is burned. . Therefore, in Patent Documents 1 and 2, the components of the exhaust gas generated by the combustion of garbage and the temperature in the furnace are measured, and the supply amount of air and the like are controlled based on the measurement results so that the heat input amount of the boiler is constant. A method is disclosed.

Japanese Patent Laid-Open No. 55-56514 JP-A-9-273732

However, since the methods described in Patent Documents 1 and 2 control the combustion of the waste that is burned later based on the measurement result of the previously burned waste (that is, feedback control), Under circumstances where the contents change every moment, it is difficult to stably input heat to the boiler.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a waste incineration facility capable of stably inputting heat into a boiler.

A waste incineration facility according to one aspect of the present invention includes an incinerator that burns waste dried in a drying unit in a combustion unit, a boiler that generates steam using heat generated by combustion of the waste, and the incinerator Based on the properties of the in-furnace gas obtained from the gas detection device, the gas detection device for detecting the properties of the in-furnace gas containing the gas generated in the drying unit, Control for calculating an optimum amount of deposition that generates a desired amount of heat when the dust in the drying section burns, and controlling the dust feeder so that the amount of dust deposition in the drying section becomes the optimum amount of deposition And a device.

In this configuration, the amount of deposition is adjusted based on the properties of the gas generated from the dust before combustion, and control is performed so that a desired amount of heat is generated when the dust burns (that is, feedforward control is performed). ing). Therefore, stable heat input to the boiler is possible even if the contents of the garbage supplied to the incinerator changes every moment.

The waste incineration facility further includes an air supply device that supplies air to the incinerator, and the control device burns waste in the drying unit based on a property of the in-furnace gas acquired from the gas detection device. In this case, an optimum air supply amount that generates a desired amount of heat may be calculated, and the air supply device may be controlled so that the air supply amount to the incinerator becomes the optimum air supply amount.

According to this configuration, not only the amount of dust accumulated in the drying section but also the amount of air supplied to the incinerator is adjusted, so that the heat input to the boiler can be further stabilized.

In the above-described waste incineration facility, the control device may calculate the optimum accumulation amount in synchronization with driving of the dust supply device.

According to this configuration, the optimum accumulation amount is calculated every time the garbage is supplied to the drying section. Therefore, even if the situation changes due to the waste being supplied to the drying section, the optimum deposition amount is calculated according to the change, so that the optimum deposition amount can be accurately calculated.

In the above-mentioned waste incineration equipment, further comprising a level meter for detecting the accumulated height of the waste in the drying unit, the control device is based on the accumulated height of the waste obtained from the level meter, the waste in the drying unit The dust supply device may be controlled so that the amount of the accumulated amount becomes the optimum amount of accumulation.

According to this configuration, since the amount of dust accumulated in the drying section can be estimated from the height of dust accumulation, an appropriate amount of garbage can be supplied to the drying section.

In the above-mentioned waste incineration facility, the incinerator has an air gas holding space having a constricted portion in the downstream portion at least in a region including the drying portion, and the combustion gas generated in the combusting portion passes through the constricted portion. And you may be comprised so that it may flow toward the said boiler.

According to this configuration, the air gas holding space is a space where there is almost no flame. Therefore, as a result of the air gas holding space being able to hold the furnace gas, the property of the furnace gas can be easily detected.

Moreover, the waste incineration equipment according to another aspect of the present invention includes an incinerator that burns waste dried in the drying section in the combustion section, a boiler that generates steam using heat generated by the combustion of the waste, A gas detection device that detects the properties of the in-furnace gas including the gas generated in the drying unit, and a control that calculates the amount of heat generated by the dust in the drying unit based on the properties of the in-furnace gas acquired from the gas detection device An apparatus.

According to this configuration, the amount of heat generated by the dust in the drying section can be calculated. Therefore, based on this calorific value, an appropriate amount of garbage can be supplied to the incinerator or an appropriate amount of air can be supplied so that appropriate heat can be input to the boiler.

In the above waste incineration facility, the waste incinerator further includes a dust supply device that supplies waste to the drying unit of the incinerator, and a stoker that transports the waste in the incinerator, and the control device calculates the drying unit At least one of the dust supply device and the stoker may be controlled based on the amount of heat generated by the waste.

A control method according to an aspect of the present invention includes an incinerator that burns garbage dried in a drying unit in a combustion unit, a boiler that generates steam using heat generated by combustion of the waste, and the incinerator A method for controlling a waste incineration facility, comprising: a dust supply device that supplies waste to the drying unit; and a gas detection device that detects a property of an in-furnace gas containing gas generated in the drying unit, Based on the property of the gas in the furnace obtained from the gas detector, the optimum amount of heat generated when the dust in the drying section burns is calculated, and the amount of dust deposition in the drying section is calculated as the optimum deposition amount. The dust feeding device is controlled so as to be an amount.

The control method according to another aspect of the present invention includes an incinerator that burns garbage dried in a drying unit in a combustion unit, a boiler that generates steam using heat generated by combustion of the waste, A method for controlling a waste incineration facility, comprising: a gas detection device that detects a property of an in-furnace gas including a gas generated in a drying unit, based on the property of the in-furnace gas acquired from the gas detection device And calculating the amount of heat generated by the garbage in the drying section.

In the above control method, the waste incineration facility further includes a dust supply device that supplies waste to the drying unit of the incinerator, and a stoker that transports the waste in the incinerator, and the calculated You may make it control at least one of the said dust feeder and the said stoker based on the emitted-heat amount of the waste in a drying part.

As described above, according to the above-mentioned waste incineration facility, stable heat input to the boiler is possible. That is, when the power generation amount is kept constant, the heat input amount can be kept constant, and when the power generation amount is changed, the heat input amount can be smoothly changed to suppress the occurrence of hunting.

FIG. 1 is a schematic configuration diagram of a waste incineration facility. FIG. 2 is a block diagram of a control system of the waste incineration facility. FIG. 3 is a flowchart of control by the control device.

<Overall structure of waste incinerator>
First, the overall structure of the waste incineration facility 100 according to the embodiment will be described. FIG. 1 is a schematic configuration diagram of a waste incineration facility 100. As shown in FIG. 1, the waste incineration facility 100 includes an incinerator 10, a boiler 30, a dust supply device 40, an air supply device 50, and a control device 60.

In the incinerator 10, incineration is carried out while conveying garbage. The incinerator 10 includes a drying unit 11, a combustion unit 12, a post-combustion unit 13, and a recombustion unit 14 in order from the upstream side. The incinerator 10 of this embodiment is a parallel flow incinerator in which combustion gas generated by combustion of waste and waste flow in parallel. However, the incinerator 10 may be an incinerator (for example, an intermediate flow incinerator) of a type in which combustion gas and dust flow in different directions.

The drying unit 11 is a part for drying the waste supplied to the incinerator 10. Garbage in the drying unit 11 is dried by primary air supplied from below the drying stoker 15 provided on the bottom surface of the drying unit 11 and radiant heat of combustion in the adjacent combustion unit 12. At that time, gas is generated from the garbage in the drying unit 11 by thermal decomposition. Moreover, the waste of the drying unit 11 is conveyed toward the combustion unit 12 by a drying stoker 15 provided on the bottom surface of the drying unit 11.

In the region from the drying unit 11 to the combustion unit 12, an air gas holding space 16 is formed above the region. The air gas holding space 16 has a throttle portion 17 having a smaller flow path area than other portions in the downstream portion. The air gas holding space 16 holds in-furnace gas including air supplied to the incinerator 10, gas generated from the dust in the drying unit 11, and gas generated from the dust in the upstream portion of the combustion unit 12.

Further, the drying unit 11 is provided with a gas detection device 18 that detects the properties of the in-furnace gas held in the air gas holding space 16. In this embodiment, the gas detector 18 is used to detect the concentrations of H ₂ O, CO ₂ and CO in the furnace gas. The position and number of the gas detectors 18 are not particularly limited. For example, the gas detection device 18 may be provided on both side surfaces of the incinerator 10 (the front side and the back side of the paper). In that case, both gas detectors 18 may be provided at different height positions. Further, the drying unit 11 is provided with an ultrasonic level meter 19 for detecting the accumulated height of dust in the drying unit 11.

The combustion part 12 is a part for burning the garbage dried in the drying part 11. In the combustion unit 12, dust is burned and a flame is generated. Garbage in the combustion unit 12 and ash generated by combustion are conveyed toward the rear combustion unit 13 by the combustion stalker 20 provided on the bottom surface of the combustion unit 12. Further, the combustion gas and flame generated in the combustion unit 12 pass through the throttle unit 17 and flow toward the rear combustion unit 13. The combustion stoker 20 is provided at the same height as the dry stoker 15, but may be provided at a position lower than the dry stoker 15.

The post-combustion unit 13 is a part that burns garbage (unburned material) that could not be combusted in the combustion unit 12. As described above, in this embodiment, the combustion gas generated in the combustion unit 12 flows toward the post-combustion unit 13. In the post-combustion unit 13, combustion of unburned material that could not be combusted in the combustion unit 12 is promoted by the radiant heat of the combustion gas and the primary air. As a result, most of the unburned material becomes ash, and the unburned material decreases. The ash generated in the post-combustion unit 13 is conveyed toward the chute 22 by the post-combustion stalker 21 provided on the bottom surface of the post-combustion unit 13. The ash conveyed to the chute 22 is discharged outside the waste incineration facility 100. Note that the post-combustion stoker 21 of this embodiment is provided at a position lower than the combustion stoker 20, but may be provided at the same height as the combustion stoker 20.

The reburning part 14 is a part for burning unburned gas. The recombustion unit 14 extends upward from the post-combustion unit 13 and is inclined so that the horizontal position approaches the drying unit 11 as it progresses upward. The combustion gas and unburned gas generated in the drying unit 11, the combustion unit 12, and the post-combustion unit 13 (hereinafter collectively referred to as “mainstream gas”) are the drying unit 11, the combustion unit 12, and the post-combustion unit. 13 flows obliquely downward along the line 13, passes through the throttle part 17, changes direction to a V shape, and flows into the reburning part 14. In the vicinity of the throttle unit 17, secondary air is supplied to the mainstream gas. As a result, the mainstream gas is mixed and agitated with air, and the unburned gas contained in the mainstream gas burns in the reburning section 14.

The boiler 30 is a part that generates steam using heat generated by combustion of garbage. The boiler 30 generates steam (superheated steam) by exchanging heat with a large number of water pipes 31 and superheater pipes 32 provided on the flow path wall, and the generated steam is supplied to a steam turbine generator (not shown). Power generation. In order to perform stable power generation, it is necessary to stabilize the heat input to the boiler 30. That is, it is necessary to keep the heat input constant in order to keep the power generation amount constant, and in order to change the power generation amount quickly, it is necessary to smoothly change the heat input so that hunting does not occur.

The dust supply device 40 is a device that supplies the waste introduced into the waste introduction hopper 41 to the drying unit 11 of the incinerator 10. The dust supply device 40 has a dust supply device main body 42 that is positioned at the bottom portion of the dust input hopper 41 and moves in the horizontal direction. By controlling the movement speed, the number of movements per unit time, the movement amount (stroke), and the position of the stroke end (movement range), the amount of dust supplied to the drying unit 11 is adjusted. can do.

The air supply device 50 is a device that supplies air to the incinerator 10. The air supply device 50 according to this embodiment includes a primary air supply unit 51, a secondary air supply unit 52, and an exhaust gas supply unit 53.

The primary air supply unit 51 supplies primary air to the drying unit 11 through a gap formed in the drying stoker 15, and an upstream part and a downstream part of the combustion unit 12 through a gap formed in the combustion stoker 20. Primary air is supplied to each of these, and primary air is supplied to the post-combustion unit 13 through a gap formed in the post-combustion stoker 21. Moreover, the primary air supply part 51 can adjust the supply amount of the primary air to each part. In addition, a heater and an air cooling wall may be provided in the primary air supply part 51 so that the temperature of the primary air supplied to each part can be adjusted.

The secondary air supply unit 52 supplies secondary air to the air gas holding space 16 of the incinerator 10 from the upper part (ceiling part) and also supplies secondary air from the throttle part 17 to the part where the mainstream gas changes direction. To do. Moreover, the secondary air supply part 52 can adjust the supply amount of the secondary air to each part.

The exhaust gas supply unit 53 supplies (recirculates) the exhaust gas discharged from the waste incineration facility 100 to the incinerator 10. The exhaust gas discharged from the waste incineration facility 100 is purified by a filtration dust collector, and a part of the exhaust gas is supplied from the both side surfaces (the front side and the back side of the paper surface) to the incinerator 10 by the exhaust gas supply unit 53. Supplied. The position where the exhaust gas is supplied is not particularly limited. For example, exhaust gas may be supplied from the upper side (ceiling part) of the incinerator 10, or may be supplied only from one side surface. By supplying the exhaust gas to the incinerator 10, the oxygen concentration in the incinerator 10 is reduced, and a local excessive increase in the combustion temperature can be suppressed. As a result, generation of NOx can be suppressed.

The control device 60 is constituted by a CPU, a RAM, a ROM, and the like, performs various calculations, and controls the entire waste incineration facility 100. FIG. 2 is a block diagram of a control system of the waste incineration facility 100. The control device 60 is electrically connected to the gas detection device 18 and the level meter 19. The control device 60 acquires the characteristics of the in-furnace gas and the accumulated height of the dust in the drying unit 11 based on the measurement signals transmitted from these devices. The control device 60 is electrically connected to the dust supply device 40 and the air supply device 50. The control device 60 transmits control signals to the dust supply device 40 and the air supply device 50 to control each device.

<Control details>
Next, the contents of control by the control device 60 will be described. FIG. 3 is a flowchart of control by the control device 60.

As shown in FIG. 3, when the control is started, the control device 60 determines the properties of the in-furnace gas (the gas held in the air gas holding space 16) including the gas generated in the drying unit 11 from the gas detection device 18 ( H ₂ O, CO ₂ and CO concentrations) are acquired (step S1).

Subsequently, the control device 60 calculates the amount of heat generated by the waste in the drying unit 11 based on the acquired property of the in-furnace gas (step S2). Here, the relationship between the properties of gas and the amount of heat generated by dust will be described. The amount of heat generated by the garbage is almost determined by the amounts of C (carbon), H (hydrogen), and O (oxygen) contained in the garbage. Further, when the waste burns, C, H and O contained in the waste are combined with each other to become CO, CO ₂ and H ₂ O. In the drying section 11 of the incinerator 10, CO, CO ₂ , and H ₂ O are generated by thermal decomposition even when the garbage is dried. Therefore, by measuring at least two kinds of components of CO, CO ₂ , and H ₂ O contained in the furnace gas and using the accumulated data, the calorific value of the waste can be calculated.

Further, the heat generation amount of the waste may be calculated using CO / CO ₂ as an index. When the amount of C contained in the garbage is large, the ratio of CO to CO ₂ tends to increase in the drying unit 11. This is because C is not in a stage where C is sufficiently combined with O in the drying unit 11. Further, when the amount of C contained in the garbage is large, the calorific value becomes large. Therefore, the calorific value of the waste can be calculated using CO / CO ₂ as an index.

In the present embodiment, the control device 60 stores map data indicating the relationship between the concentration of H ₂ O, CO ₂ , and CO in the furnace gas and the amount of heat generated by the dust in the drying unit 11. Therefore, the control device 60 can calculate the heat generation amount of the dust in the drying unit 11 based on the property of the in-furnace gas acquired in step S1 and the map data.

The in-furnace gas includes air supplied from the air supply device 50. Since the control device 60 can grasp the amounts of H ₂ O, CO ₂ , and CO in the air supplied from the air supply device 50, if the amount of heat generated by the waste in the drying unit 11 is calculated in consideration of this amount, Accurate values can be obtained.

Subsequently, the control device 60 sets a target heat input amount (step S3). The control device 60 may set the target heat input from the input value (the amount of waste input to the incinerator 10 or the target value of the boiler heating value to be generated), and the value calculated by a predetermined calculation is set as the target heat input. It may be set. For example, when the heat input amount to the boiler 30 is kept constant, the target heat input amount is kept constant, and when the heat input amount to the boiler 30 is changed, the target heat input amount is sequentially changed.

Subsequently, the control device 60 calculates an optimum accumulation amount and an optimum air supply amount at which the heat amount generated when the dust in the drying unit 11 burns becomes the target heat input amount (step S4). The amount of heat generated when the garbage is completely burned can be expressed by the product of the heat value and weight of the garbage. Therefore, the optimum amount of accumulation in which the amount of heat generated when the waste in the drying unit 11 burns becomes the target heat input amount is calculated based on the heat generation amount of the waste calculated in step S2 and the target heat input amount set in step S3. Can do.

However, since the combustion state of the garbage depends on the air supply amount to the incinerator 10, the optimum air supply amount is also calculated. The optimum air supply amount may be calculated for each of primary air, secondary air, and exhaust gas, or may be calculated for each air supply position. For example, when the concentration of H ₂ O in the furnace gas is high, it may be calculated so that the optimum amount of primary air is increased in order to quickly dry wet waste.

Subsequently, the control device 60 acquires the accumulation height of dust in the drying unit 11 from the level meter 19 (step S5).

Subsequently, the control device 60 calculates a dust accumulation amount in the drying unit 11 based on the dust accumulation height acquired in step S5 (step S6). Although the specific gravity of the garbage is not constant, there is a correlation between the heat generation amount of the waste and the specific gravity of the waste, so that the specific gravity of the waste can be calculated based on the heat generation amount of the waste calculated in step S2. Based on the specific gravity of the waste, the amount of accumulated dust (weight) in the drying unit 11 can be calculated.

Subsequently, the control device 60 controls the dust supply device 40 and the air supply device 50 (step S7). Specifically, the control device 60 calculates the difference between the optimum accumulation amount calculated in step S4 and the accumulation weight of dust in the drying unit 11 calculated in step S6, and the difference becomes zero or decreases. As described above, the dust supply device 40 is controlled to additionally supply dust to the drying unit 11. Further, the control device 60 controls the air supply device 50 so that the air supply amount to the incinerator 10 becomes the optimum air supply amount calculated in step S4.

As described above, in the present embodiment, based on the property of the gas generated from the garbage in the drying unit 11 that is the garbage before combustion, the drying unit is set so that the amount of heat input when the garbage burns becomes an appropriate value. 11 adjusts the amount of accumulated dust and the amount of air supplied to the incinerator 10. That is, in this embodiment, feedforward control is performed. Therefore, even if the contents of the garbage supplied to the incinerator 10 change every moment, stable heat input to the boiler 30 is possible.

In addition, after passing through said step S7, it returns to step S1 and repeats step S1 to S7. That is, in this embodiment, the driving of the dust supply device 40 and the calculation of the optimum deposition amount are performed in synchronization. Thus, since the optimum accumulation amount is calculated every time the garbage is supplied to the drying unit 11, even if the situation changes due to the waste being supplied to the drying unit 11, the optimum accumulation amount is changed according to the change. It is calculated again, and the optimum deposition amount can be calculated with high accuracy.

In the above-described embodiment, the amount of heat generated by the dust in the drying unit 11 is calculated based on the properties of the furnace gas and the map data. This calorific value is an absolute value that can be expressed using a fixed unit. However, the optimum deposition amount and the optimum air supply amount may be calculated using a relative increase / decrease in the heat generation amount. For example, the amount of heat generated from the waste (hereinafter referred to as “target waste”) for which the target heat input is obtained by combustion, and the amount of deposit when located in the drying unit 11 (the “target heat generation” and “target deposition, respectively”). The amount of heat) is stored, and a relative calorific value with respect to the target calorific value is calculated based on the properties of the gas in the furnace, and an optimum deposition amount is calculated based on the calculated relative calorific value and the target deposition amount. The optimum air supply amount may be calculated.

Further, the optimum accumulation amount and the optimum air supply amount may be calculated without obtaining the heat generation amount. For example, the property of the gas in the furnace (hereinafter referred to as “reference property”) when the standard waste is located in the drying unit 11 and the above-described target deposition amount are stored, The stored reference properties may be compared, and the optimum accumulation amount and the optimum air supply amount may be calculated based on the comparison result and the target accumulation amount.

Further, the calorific value calculated in step S2 is stored at a certain time interval or at the timing when the feeding device 40 operates, and the relative value of the calorific value newly calculated in step S2 with respect to the calorific value calculated at the previous timing is obtained. The optimum deposition amount and the optimum air supply amount may be calculated by using them.

Further, the incinerator 10 of the present embodiment is a parallel flow incinerator as described above, and the air gas holding space 16 having the throttle portion 17 is formed in the region including the drying portion 11, and is generated in the combustion portion 12. The combustion gas is configured to flow toward the boiler 30 through the throttle portion 17. Therefore, the air gas holding space 16 is a space where there is almost no flame, and the furnace gas can be held in that space. As a result, the property of the in-furnace gas can be easily detected.

In addition, although the case where the incinerator 10 is a parallel flow incinerator was demonstrated above, the incinerator 10 may be an intermediate flow incinerator. In the intermediate flow incinerator, the air gas holding space 16 is generally not formed. However, even if the intermediate flow incinerator is used, if the property of the in-furnace gas including the gas generated in the drying unit 11 can be detected, the detection is possible. It is possible to perform stable heat input to the boiler 30 based on the properties of the in-furnace gas.

Moreover, although the case where the dust supply apparatus 40 and the air supply apparatus 50 were controlled based on the calorific value of the dust in the drying part 11 was demonstrated above, the drying stoker 15 and combustion based on the calorific value of the garbage in the drying part 11 were demonstrated. All or part of the stalker 20 and the post-combustion stalker 21 may be controlled. Garbage changes in quantity of heat when it comes into contact with air. When it is desired to increase the amount of heat input to the boiler 30, the chance that the waste comes into contact with air is increased, and combustion is activated. Specifically, by increasing the number of operations per unit time of each

stalker

15, 20, and 21, the number of times that dust and air come into contact is increased. Alternatively, by increasing the operating speed of each

stalker

15, 20, 21, the trash placed on each

stalker

15, 20, 21 is broken, and the area of the trash that contacts the air is increased. On the other hand, when it is desired to suppress the amount of heat input to the boiler 30, the number of operations per unit time of each

stalker

15, 20, 21 may be reduced or the operation speed may be reduced.

In the above description, the case where the amount of heat generated by the dust in the drying unit 11 is calculated based on only the properties of the furnace gas and the optimum deposition amount and the optimum air supply amount are calculated has been described. Each amount may be calculated based on other factors. For example, based on the heat generation amount of the waste in the drying unit 11 calculated based on the properties of the gas in the furnace and the heat generation amount of the waste calculated based on the flow rate of the steam generated in the boiler 30, the optimum deposition amount and the optimal The air supply amount may be calculated. In this case, the heat generation amount of the waste in the drying unit 11 calculated based on the property of the furnace gas may be mainly used or may be used in a corrective manner.

DESCRIPTION OF SYMBOLS 10 Incinerator 11 Drying part 12 Combustion part 15 Dry stoker 16 Air gas holding space 17 Restriction part 18 Gas detector 19 Level meter 20 Combustion stoker 21 Post combustion stoker 30 Boiler 40 Dust supply apparatus 50 Air supply apparatus 60 Control apparatus 100 Waste incineration Facility

Claims

An incinerator for burning the waste dried in the drying section in the combustion section;
A boiler that generates steam using heat generated by the combustion of garbage;
A dust supply device for supplying garbage to the drying section of the incinerator;
A gas detection device for detecting the properties of the gas in the furnace including the gas generated in the drying unit;
Based on the property of the in-furnace gas acquired from the gas detection device, an optimum accumulation amount that generates a desired amount of heat when the garbage in the drying section burns is calculated, and the accumulation amount of the dust in the drying section is the optimum amount. A waste incineration facility comprising: a control device that controls the dust supply device so as to obtain a deposition amount.
An air supply device for supplying air to the incinerator;
The control device calculates an optimum air supply amount that generates a desired amount of heat when the dust in the drying section burns based on the properties of the in-furnace gas acquired from the gas detection device, and supplies the incinerator to the incinerator The refuse incineration facility according to claim 1, wherein the air supply device is controlled so that an air supply amount becomes the optimum air supply amount.
The waste incineration facility according to claim 1 or 2, wherein the control device calculates the optimum accumulation amount in synchronization with driving of the dust supply device.
Further comprising a level meter for detecting the accumulated height of dust in the drying section,
The said control apparatus controls the said dust supply apparatus so that the deposition amount of the dust in the said drying part may become the said optimal deposition amount based on the deposition height of the garbage acquired from the said level meter. The waste incineration facility according to any one of the above.
In the incinerator, an air gas holding space having a constricted portion in a downstream portion is formed in a region including at least a dry portion, and combustion gas generated in the combusting portion passes through the constricted portion toward the boiler. The refuse incineration facility according to any one of claims 1 to 4, wherein the facility is configured to flow.
An incinerator for burning the waste dried in the drying section in the combustion section;
A boiler that generates steam using heat generated by the combustion of garbage;
A gas detection device for detecting the properties of the gas in the furnace including the gas generated in the drying unit;
A waste incineration facility comprising: a control device that calculates the amount of heat generated by the waste in the drying unit based on the property of the in-furnace gas acquired from the gas detection device.
A dust supply device for supplying garbage to the drying section of the incinerator;
A stalker that transports the waste in the incinerator,
The waste incineration facility according to claim 6, wherein the control device controls at least one of the dust feeding device and the stoker based on the calorific value of the waste in the drying unit.
An incinerator for burning the waste dried in the drying section in the combustion section, a boiler for generating steam using heat generated by the combustion of the garbage, and a dust feeder for supplying the waste to the drying section of the incinerator And a method for controlling a waste incineration facility, comprising: a gas detection device that detects a property of the in-furnace gas including the gas generated in the drying unit,
Based on the property of the in-furnace gas acquired from the gas detection device, an optimum accumulation amount that generates a desired amount of heat when the garbage in the drying section burns is calculated, and the accumulation amount of the dust in the drying section is the optimum amount. A control method of controlling the dust supply device so as to obtain a deposition amount.
The incinerator for burning the waste dried in the drying section in the combustion section, the boiler that generates steam using the heat generated by the combustion of the waste, and the properties of the gas in the furnace including the gas generated in the drying section A method for controlling a waste incineration facility comprising a gas detection device for detecting,
A control method comprising calculating a heating value of dust in the drying unit based on a property of the in-furnace gas acquired from the gas detection device.
The waste incineration facility further includes a dust supply device that supplies waste to the drying unit of the incinerator, and a stalker that transports the waste in the incinerator,
The control method according to claim 9, wherein at least one of the dust feeder and the stoker is controlled based on the calculated amount of heat generated by the waste in the drying unit.