JP2000205539A - Material-to-be-treated supply amount controller for incinerating furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material-to-be-treated amount controller adapted to control a total exhaust amount of harmful substance in an incinerating furnace constituted to control a supplying mechanism based on a material-to-be-treated supply amount set to a supply amount setting means. SOLUTION: The incinerating furnace comprises a total exhaust gas amount sensor 25 capable of sensing a total exhaust gas amount from a furnace, an upper limit value setting means 27 capable of setting a preset target upper limit value, and a correcting value calculating means 29 for calculating and guiding a correcting value for the set material-to-be-treated supply amount if the total exhaust gas amount sensed by the sensor 25 exceeds the target upper limit value. Thus, the material-to-be-treated supply amount can be corrected based on the calculated and guided correcting value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling a supply amount of an object to be treated in an incinerator, and more particularly, to an object to be treated supplied to a receiving hopper to a furnace. A supply mechanism, and supply amount setting means for setting a supply amount of the processing target per predetermined time to the furnace based on a target incineration processing amount of the processing target per day; The present invention relates to an apparatus for controlling a supply amount of a workpiece in an incinerator configured to control the supply mechanism based on the supplied supply amount of the workpiece.

[0002]

2. Description of the Related Art Conventionally, in an incinerator, in order to control a supply amount of an object to be treated into the furnace, a supply amount of an object to be treated per unit time is controlled so as to achieve a target incineration amount per day. The supply mechanism was controlled based on this, and if there was no change in the furnace condition, the workpiece was constantly supplied. That is, there is no special means for adjusting the supply amount of the workpiece. The amount of air to be supplied into the furnace is, for example, a pusher which constitutes a supply mechanism 2 for supplying an object to be treated, which has been put into the receiving hopper 1, to the furnace, such as a garbage incinerator having a stoker type grate 4 shown in FIG. The mechanism 2A calculates the supply amount of the processing target per hour with respect to the target incineration processing amount of the day set by the target supply setting unit 24, and based on the processing target supply amount, the drive cycle time. Was set. When a power generator 19 is provided for driving a generator 19b by a steam turbine 19a with steam from a waste heat boiler 6 provided in a flue 17 from a furnace to generate electric power, the power generation apparatus 19 needs to be treated in order to maintain its electric energy. In some cases, the amount of supply was adjusted. In such an incinerator, the combustion control means 20
The supply amount of the primary air necessary for burning the object supplied into the furnace by the supply mechanism 2 is adjusted according to the property of the object supplied into the furnace. The secondary air supplied to the secondary combustion chamber 5 is adjusted by the primary air control means 21 provided in the combustion control means 20 in accordance with the combustion state (or, in the case of having a gas cooling chamber, the secondary cooling chamber). The supply amount of the supplied cooling air) is determined by an oxygen concentration detecting means 20a and a carbon monoxide concentration detecting means which are disposed on the downstream side of the outlet of the bag filter 12 which is a dust collecting device as the detecting end of the combustion control means 20. 20
The secondary air control means 22 has adjusted the residual oxygen concentration and the ratio of carbon monoxide detected in b to fall within predetermined ranges. The adjustment of the amount of air is performed only by the combustion control means 20 for the purpose of maintaining a good combustion state in the furnace, and in addition to harmful substances such as nitrogen oxides and dioxins discharged simultaneously in the exhaust gas. The purpose was also to maintain the concentration of the compound below the regulation value.

[0003]

That is, in the above-described conventional incinerator, the object to be treated is supplied into the furnace based on the set amount of supply of the object to be treated, and this is efficiently burned. The air supply amounts of the primary air, the secondary air, and the like are independently adjusted by the combustion control means 20 so that the concentration of the harmful substance becomes equal to or less than the regulation value. Meanwhile, regarding these harmful substances, it has been increasingly recognized that regulation of emission concentration is insufficient, and that regulation of total emission is required. For this reason, there is a movement to regulate the total amount of exhaust gas. In response to these emissions regulations,
Conventional methods for controlling harmful emissions are not compatible. In other words, with the above method, if the amount of harmful emissions increases, the amount of air can be increased and diluted accordingly to maintain the level below the regulation value, but this causes an increase in the total amount of exhaust gas. is there. Conventionally, there has been no problem with increasing the total amount of exhaust gas. That is, since the total amount of exhaust gas cannot be suppressed by the conventional method, there is a problem that it is impossible to suppress the concentration of discharged harmful substances in the environment.
Therefore, the apparatus for controlling the supply amount of the incinerator of the present invention,
It is an object of the present invention to solve the above problems and to provide a means adapted to regulate the total emission amount of harmful substances.

[0004]

Means for Solving the Problems [First characteristic configuration] A first characteristic configuration of an apparatus for controlling a supply amount of an object to be treated in an incinerator according to the present invention for the above object is as described in claim 1. A total exhaust gas sensor capable of detecting a total exhaust gas amount from the furnace, and an upper limit value setting unit capable of setting a preset target upper limit value, and the total exhaust gas amount detected by the total exhaust gas sensor is set to the target exhaust gas amount. A correction value calculating unit configured to calculate and derive a correction value for the set processing object supply amount when the upper limit value is exceeded, so that the processing target supply amount can be corrected based on the calculation and derived correction value; It is in the point that has been.

According to a second aspect of the present invention, there is provided an apparatus for controlling a supply amount of an object to be treated in an incinerator according to the present invention, wherein the correction value in the first aspect is a predetermined value. The deviation from the target upper limit value of the average exhaust gas amount obtained by averaging the total exhaust gas amount detected by the exhaust gas total amount sensor is multiplied by a preset correction coefficient to be calculated and derived by the correction value calculating means. is there.

According to a third aspect of the present invention, there is provided an apparatus for controlling a supply amount of an object to be treated in an incinerator according to the present invention. An average exhaust gas amount detecting means for integrating and calculating an average exhaust gas amount per time; and a correction amount obtained by multiplying a value obtained by dividing a deviation of the obtained average exhaust gas amount from a target upper limit value by the average exhaust gas amount by a target incineration treatment amount. Is provided, and the correction value calculating means is configured to calculate and derive a correction value by multiplying the obtained correction amount by a correction coefficient.

According to a fourth aspect of the present invention, there is provided an apparatus for controlling a supply amount of an object to be treated in an incinerator according to the present invention. The corrected supply amount after correcting the supply amount of the processing object by the correction value based on the preset increase rate for recovering the supply amount of the processing object after the correction is processed based on the target incineration processing amount. The point is that a recovery means for increasing the supply amount of the material is provided.

[Effects of Each Feature] In any of the first to fourth features, the total amount of exhaust gas is maintained at a predetermined value or less while the concentration of harmful substances in the exhaust gas is maintained within a predetermined range. become able to. In other words, based on the total exhaust gas amount detected by the exhaust gas total amount sensor and the target upper limit value of the emission amount set by the upper limit value setting means, the harmful substance concentration in the exhaust gas is determined using the conventional harmful substance emission concentration control method. The emission of harmful substances is suppressed while maintaining the value within the predetermined range. Specifically, when the total exhaust gas amount exceeds the target upper limit value with respect to the processing object supply amount set by the supply amount setting means based on the target incineration processing amount, the total exhaust gas amount is equal to or less than the target upper limit value. The target value required for the reduction of the object to be processed is calculated, and a correction value taking into account the characteristics of the furnace and the like is calculated and derived by the correction value calculating means based on the target value. By correcting the supply amount of the processing target set in the supply amount setting means based on the correction value, the total exhaust gas amount in a state where combustion is suitably maintained can be suppressed to the target upper limit value or less. As a result, the total amount of harmful substances discharged together with the exhaust gas can be suppressed.

According to the second characteristic configuration, the first feature
By obtaining the deviation from the target upper limit value of the average exhaust gas amount obtained by averaging the detected total exhaust gas amount within a predetermined time while exerting the function and effect of the characteristic configuration, the total exhaust gas amount can be monitored every moment, and By multiplying by the set correction coefficient, a correction value is obtained by the correction value calculation means, and a more appropriate supply amount of the workpiece can be set. The correction coefficient can be appropriately set according to the characteristics of the furnace, the operating conditions, the properties of the object to be treated, and the like.

According to the third aspect, the correction amount is obtained based on the average exhaust gas amount obtained by the average exhaust gas amount detecting means and the target incineration processing amount while exhibiting the operation and effect of the second characteristic configuration. Since the correction amount is obtained by the calculating means, the correction value obtained by multiplying the correction coefficient by the correction value calculating means is based on the target incineration processing amount, and the total exhaust gas amount is determined by the target upper limit value. It is easy to achieve the target incineration treatment amount while maintaining the following. By the way, when the average exhaust gas amount is less than the target upper limit, if there is room for increasing the supply amount of the workpiece, it is also possible to obtain a correction amount in the reverse direction, and the supply amount of the workpiece is It is also possible to increase the amount to promote the treatment under the condition that the average exhaust gas amount does not exceed the target upper limit value.

Further, according to the third characteristic configuration, while providing the respective effects of the first to third characteristic configurations, the corrected workpiece supply amount is determined based on a preset increase rate. By increasing the amount, the amount of incineration that decreases due to the correction can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of the apparatus for controlling the amount of material to be treated in an incinerator according to the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an example of the incinerator according to the present invention. Note that the same elements as those described in the related art and elements having the same functions are denoted by the same reference numerals as those in FIG. 8, and a part of the detailed description is omitted.

In the incinerator according to the present invention, as shown in FIG. That is, the exhaust gas total amount sensor 25 for detecting the total exhaust gas amount is provided in the flue 17, and the to-be-processed material supply amount control device 23 averages the total exhaust gas amount detected by the exhaust gas total amount sensor 25 within a predetermined time. The average exhaust gas amount detecting means 26 for obtaining the exhaust gas amount, the upper limit value setting means 27 capable of setting the target upper limit value of the total exhaust gas amount, and the supply amount of the workpiece set in the supply amount setting means 28 are determined under predetermined conditions. And a correction value calculating means 29 for calculating and calculating a corrected supply amount, and setting the corrected supply amount in the supply amount setting means 28 based on a target incineration processing amount per day under predetermined conditions. A recovery means 31 is provided for recovering the supply amount of the processing object.

The correction value calculating means 29 may be provided with a correction amount calculating means 30. The total exhaust gas amount detected by the exhaust gas total amount sensor 25 is set in the upper limit value setting means 27. When the total exhaust gas amount exceeds the target upper limit value as compared with an upper limit value, a correction amount is determined based on a deviation of the average exhaust gas amount detected by the average exhaust gas amount detection means 26 from the target upper limit value. I just need. The correction calculation in the correction value calculation means 29 obtains a correction value by multiplying the correction amount by a predetermined correction coefficient, and sets the first correction supply amount as the processing object supply amount set in the supply amount setting unit 28. The correction value is added to the corrected supply amount to obtain a new corrected supply amount.

A specific example of the processing for correcting the supply amount of the workpiece in the workpiece supply amount control device 23 will be described below by way of an example. Here, for simplicity,
An example in which only the amount of refuse supplied to the stoker-type refuse incinerator as shown in FIG. The pushing cycle of the pusher mechanism 2A as the supply mechanism 2 is set based on the corrected supply amount output from the correction value calculation means 29. First, the processing object supply amount set by the supply amount setting means 28 is set to the correction supply amount of the correction value calculating means 29 based on the target incineration processing amount set by the target supply amount setting means 24. Next, the receiving hopper 1
The required primary air amount is calculated by the primary air control means 21 based on the lower heating value estimated for the dust put in the
The amount of primary air supplied to the primary air supply mechanism 8 is set. The supply primary air amount is adjusted as needed in accordance with the state of combustion of the refuse in the furnace F. Further, the supply amount of the secondary air supplied to the secondary combustion chamber 5 provided on the downstream side of the furnace F is determined by adjusting the furnace outlet temperature measured near the outlet of the secondary combustion chamber 5 to a predetermined temperature range (for example, 950 ° C.). (Before and after), the secondary air supply means 9 is controlled by the secondary air control means 22 and adjusted. The primary air control means 21 and the secondary air control means 22 constitute the combustion control means 20. The combustion control means 20 is configured to set the supply air amount in accordance with the output of the supply amount setting means 28. And
Cooling air supplied to the exhaust gas cooling mechanism 10 so as to maintain the oxygen concentration in the exhaust gas detected by the oxygen concentration detecting means 20a provided in the flue 17 downstream of the bag filter 12 in a predetermined range (for example, about 8%). The quantity is adjusted, also controlled by the secondary air control means 22. The concentration of carbon monoxide in the exhaust gas detected by the carbon monoxide concentration detecting means 20b is also input to the secondary air control means 22, and is referred to in the above control. In the illustrated example, in order to finally remove harmful components in exhaust gas such as dioxins and nitrogen oxides, the flue gas 17 downstream of the bag filter 12 is used.
Is provided with an exhaust gas cleaning device 15. Exhaust gas from the incinerator passes sequentially through each facility, is drawn from the exhaust gas cleaning device 15 via a flue 17 by an induction blower mechanism 16, and is sent out to a chimney 18.

The supply amount of the workpiece, the supply primary air amount, and the supply secondary air amount set and adjusted as described above are corrected as follows. A specific calculation example of the correction value calculation means 29 for this purpose will be described. The correction amount is calculated by the correction amount calculation means 30 by a different method depending on the case, for example, every 20 minutes as follows.

When the total exhaust gas amount (Et) detected by the total exhaust gas sensor 25 is equal to or less than the target upper limit value (Eu), the correction value calculating means 29 sets the correction value (Ag) to zero and sets the target supply amount. The processing object supply amount (Gs) set by the means 24 is directly output as the correction supply amount (Ga). That is, the relational expression of each quantity is as follows. On the condition that ΔE = Et−Eu ≦ 0, ΔE = 0 ΔG = α × ΔE / Em = 0 Gs = Gd Ag = Ca × ΔG = 0 Ga = Gs−Ag = Gs where Et is the total exhaust gas amount, Eu Is a target upper limit value, ΔE is a deviation of the total exhaust gas amount (Et) from the target upper limit value (Eu), Em is an average exhaust gas amount averaged over 20 minutes, and α is a deviation (Δ
E), a conversion coefficient for calculating the amount of the object to be treated, Δ
G is the correction amount, Gd is the target incineration amount per day, Gs
Is the supply amount of the object to be treated per day, Ca is the correction coefficient, Ag
Is a correction value, and Ga is a correction supply amount (per day). What is output as the control index of the supply mechanism 2 from the processing object supply amount control means 23 is the target incineration pace given as the processing object supply amount per hour.

If the total exhaust gas amount (Et) exceeds the target upper limit value (Eu), the correction amount calculating means 30
And the target upper limit value (Eu) of the total exhaust gas amount (Et)
The correction amount (ΔG) is calculated by converting the deviation (ΔE) with respect to the amount of the material to be incinerated, and the correction value calculating means 29 calculates the correction amount (ΔG) by taking into account the variation of the total exhaust gas amount (Et). (For example, 1.6) to calculate the correction value (Ag), and further add this correction value (Ag) to the previously set correction supply amount (Ga) to further correct the correction supply amount (Ag). Ga) is output. The relational expression for each quantity is as follows. On the condition that ΔE = Et−Eu> 0, ΔG = α × ΔE / Em Gs = Gd Ag = Ca × ΔG Ga = Ga + Ag The meaning of each quantity symbol is as described above.

If the process for reducing the corrected supply amount (Ga) is repeated in the above procedure, the target incineration amount (Gd) cannot be achieved on that day. Therefore, the recovery means 31 is provided, and when the detected average exhaust gas amount (Em) falls below the target upper limit (Eu), the increase rate (Ri) preset in the recovery means 31 is set. (For example, 25%)
As long as the deviation (ΔE) does not become a positive value based on the above, the correction supply amount (Ga) is increased in several steps so as to approach the original treatment object supply amount (Gs). To That is, a value obtained by multiplying the absolute amount of the deviation (ΔE) by the increase rate (Ri) is set as the correction value (Ag).
That is, under the condition that ΔE = Et−Eu <0, the correction value (Ag) is corrected as Gi = Ag × Ri Ag = Ag−Gi. Note that Ri is a preset increase rate.

A correction processing cycle of the correction supply amount (Ga) described above, for example, is shown as a flow chart as shown in FIG.
That is, the processing object supply amount (Gs) set in advance by the supply amount setting means 28 is substituted for the correction supply amount (Ga). [* 1] The total exhaust gas amount (Et) detected by the exhaust gas total amount sensor 25 is compared with a target upper limit value (Eu) set in the upper limit value setting means 27 in advance, and a deviation (ΔE) thereof is obtained. [* 2] The sign of the deviation (ΔE) obtained in [* 1] is determined. If the result of the determination is not positive, the following [* 7] is executed. [* 3] The correction amount (ΔG) is calculated by the correction amount calculating means 30 based on the above equation. [* 4] The correction value calculating means 29 calculates the correction amount (ΔG)
, A correction value (Ag) is calculated. [* 5] The output correction value (Ag) is multiplied by a preset increase rate (Ri) to obtain an increase amount (Gi), and [* 1]
2]. If the processing object supply amount (Gs) set in the supply amount setting means 28 or the correction amount (ΔG) set in the correction amount calculation means 30 has been changed, the setting change is recorded. . [* 6] The sign of the deviation (ΔE) obtained in [* 1] is determined. If the result of the judgment is not negative, [*
1] and execute the subsequent steps. [* 7] If no setting change is recorded in [* 5], execute [* 11] and subsequent steps. [* 8] The processing object supply amount (Gs) whose setting has been changed in [* 5] is substituted for the correction supply amount (Ga). [* 9] Correction value (Ag) based on the correction amount (ΔG)
Is calculated. [* 10] The amount of increase (Gi) is calculated based on the calculated correction value (Ag). [* 11] The correction value (Ag) is corrected based on the increase amount (Gi). [* 12] Based on the correction value (Ag), the correction supply amount (G
a) is corrected and output, and after 20 minutes, returns to [* 1],
[* 1] Execute the following

Next, another embodiment of the present invention will be described. <1> In the above-described embodiment, an example in which only the amount of refuse supplied to the stoker-type refuse incinerator is controlled with reference to FIG. 1 is described. For example, as shown in FIG. The incinerator is used to incinerate waste such as sludge and waste oil together with garbage.Furthermore, a melting furnace for melting and processing incineration ash from the incinerator is provided to incinerate waste such as waste plastic. The present invention is also applicable to a waste treatment plant that melts waste that cannot be incinerated.
Of course, the present invention is also applicable to a waste treatment plant constituted by a part of these. In the waste treatment plant shown in the figure, a pusher mechanism 2A for supplying refuse introduced from the receiving hopper 1 to the furnace F in the incineration rotary drum 3, and a sludge for introducing sludge into the inputted refuse. Feeder 2B,
An incinerator equipped with a waste oil spraying mechanism 2 </ b> C disposed near the entrance of the secondary combustion chamber 5 as the workpiece supply mechanism 2 is exemplified. In the figure illustrating the incinerator, in order not to increase the amount of exhaust gas, the exhaust gas cooling mechanism 10 is provided with a cooling water spray mechanism 11 and water-cooled. It is designed to remove acidic components. Further, an incineration ash supply mechanism 2D for supplying incineration ash discharged from the incinerator into the furnace and a sorting waste supply mechanism 2E for injecting into the furnace the sorting waste to be incinerated and melted together with the incineration ash. Waste melting furnace 1 provided as workpiece supply mechanism 2 for melting and processing the loaded workpiece
An example in which 3 is provided together can be shown. The waste melting furnace 13 is provided with a secondary combustion chamber 5 for secondary combustion of the combustion exhaust gas from the furnace F, and post-combustion the combustion exhaust gas from the secondary combustion chamber 5 burned under insufficient air conditions. It can be shown that the afterburning chamber 7 is provided in the flue 17. In such a waste treatment plant, the amount of each of the materials to be treated is determined based on the total amount of exhaust gas from the chimney which collectively discharges the exhaust gas from the incinerator and the exhaust gas from the waste melting furnace 13. You will control the amount.

<2> In the above embodiment, an example in which the refuse supplied to the stoker type refuse incinerator is controlled has been described. However, this refuse incinerator is, for example, a rotary body type refuse incinerator as shown in FIG. The present invention is also applicable to a furnace, and as shown in the figure, when both sludge and waste oil are incinerated, the following configuration is possible. As a premise of the configuration description, if the configuration of the incinerator shown in FIG. 3 is supplementarily described, supply of the workpiece to a pusher mechanism 2A that supplies the workpiece fed from the receiving hopper 1 to the furnace F A sludge feeder 2 comprising a screw feeder for supplying sludge into the material to be treated inputted from the receiving hopper 1
B is provided with a sludge supply mechanism 14, and the furnace F is formed in the incineration rotary drum 3 for incinerating the supplied material to be treated, and the incineration residue discharged from the incineration rotary drum 3 is post-burned. A post-combustion unit having a stoker type grate 4 to be provided, and a waste oil spraying mechanism 2C for blowing and burning waste oil as a hydrate above the stoker type grate 4 is provided; It is formed. The primary air supply mechanism 8 of the incinerator is configured to supply primary air from both the inlet side of the incineration rotary drum 3 and from below the stoker type grate 4, and the secondary air supply The mechanism 9 is configured to supply secondary air to the secondary combustion chamber 5.

An example of the adjustment of the supply amount of the object to be processed only to the rotary drum type incinerator having the above described rotary drum 3 will be described below. The processing object supply amount control logic, for example, a flow chart shown in FIG. 2 is individually applied to each processing object. In this case, the correction coefficient (Ca) is adjusted so that the ratio of influence on each object to be processed is appropriate.
Set. (Control of Pusher Mechanism) The reference pusher speed of the pusher mechanism 2A which is the workpiece supply mechanism 2 is set, and the pusher mechanism 2A is controlled using the reference pusher speed as a control index. Taking an example of the pusher reference speed (unit: cycle / h), the reference pusher speed = target incineration pace / pusher speed calculation coefficient. The pusher speed calculation coefficient is the amount of pushed dust per one operation of the pusher mechanism, which is obtained based on measurement in advance. The target incineration pace is equivalent to dust in the corrected supply amount (Ga) output from the workpiece supply amount control device 23. (Control of sludge supply mechanism) The number of rotations of the sludge feeder 2B constituting the sludge supply mechanism 14, which is the workpiece supply mechanism 2, is set as a reference sludge supply speed, and the sludge supply mechanism 14 is controlled using this as an index. . As an example of the reference sludge supply speed (unit: rpm), the reference sludge supply speed = target sludge incineration pace × average pusher speed / (average sludge supply amount × reference pusher speed × sludge supply speed calculation coefficient). The average pusher speed is a 3-hour moving average of the actually measured pusher speed, and the average sludge supply is a 3-hour moving average of the actually measured sludge supply.
The sludge supply speed calculation coefficient is the amount of sludge supplied per unit rotation of the sludge feeder 2B. The unit of each value is t / h for the target sludge incineration pace and the average sludge supply amount, and is cycle / h for the average pusher speed and the reference pusher speed. The target sludge incineration pace is equivalent to sludge in the corrected supply amount (Ga) output from the processing object supply amount control device 23. (Control of Waste Oil Spray Mechanism) A reference waste oil spray amount is set as a spray amount from a waste oil spray nozzle constituting a waste oil spray mechanism 2C which is the workpiece supply mechanism 2, and the reference waste oil spray amount is used as a control index for the waste oil. The spray mechanism 2C is controlled. Taking an example of the reference waste oil spray amount (unit: L / H), the reference waste oil spray amount = target waste oil incineration pace is obtained. The unit of target waste oil incineration pace is L / H
It is. The target waste oil incineration pace is equivalent to waste oil in the corrected supply amount (Ga) output from the processing object supply amount control device 23.

<3> The flowchart shown in FIG. 2 is an example, and the logic is not limited to this. For example, a continuous circulation type shown in FIG. 7 may be used. <4> In the above embodiment, the correction value calculating means 29
The example in which the correction amount calculating means 30 is provided in
The correction amount calculating means 30 may be omitted, and the correction value calculating means 29 may directly calculate the correction value (Ag). The names of the correction value, the correction amount, and the like are arbitrary, and the correction supply amount (G
a) may be configured to be directly corrected. <5> In the above-described embodiment, an example has been described in which the workpiece supply amount control device 23 sets the workpiece supply amount (Gs) as the output value of the correction value calculating means 29 from the beginning. Until the start, the supply amount setting means 28
After the control amount is output based on the processing object supply amount (Gs) set in the step (a) and the correction is started, the correction supply amount (Ag) calculated based on the correction value (Ag) calculated by the correction value calculating means 29. G
The control amount may be switched and output so as to be output based on a). <6> In the above embodiment, an example in which the correction value (Ag) is reduced based on the increase amount (Gi) after the correction and until the corrected supply amount (Ga) recovers to the workpiece supply amount (Gs). However, when the average exhaust gas amount (Em) is less than the target upper limit value (Eu), the increase amount (Gi) is obtained based on the deviation (ΔE), and the processing object supply amount (Gs) is obtained. ) May be configured to be increased. With this configuration, it is possible to make the incineration amount closer to or equal to the target incineration amount (Gd) while restricting the total amount of discharged harmful substances to a predetermined amount or less.

[0025]

FIG. 4 to FIG. 6 show the results of executing the above process. In all cases, the target incineration throughput (Gd) is 50ton /
In the day, the target upper limit (Eu) is set to 22450 Nm ³ / h, the correction coefficient (Ca) is set to 1.6, and the rate of increase (Ri) for correction recovery is set to 25%. The correction processing cycle was executed at intervals of 20 minutes. still,
In this case, the target to be compared with the target upper limit (Eu) of [1] in the above process is the average exhaust gas amount (Em) obtained by averaging the total exhaust gas amount for 20 minutes instead of the total exhaust gas amount. Even so, the result is not substantially different from the above process.

FIG. 4 shows the total exhaust gas amount (E
This is an example in which t) once exceeds the target upper limit value (Eu) and then recovers normally. [A] At the first elapsed time t ₁ , the average exhaust gas amount (E
m) is 22000 Nm ³ / h, and the target upper limit (2245)
0Nm ³ / h) or less, the setting is not changed, and the target incineration pace set by the supply amount of treated material (Gs) maintains the initial value of 2.08 t / h, and the deviation (ΔE) is reduced. Since it is set to zero, the correction amount (ΔG) and the increase amount (Gi)
Are zero, and the supply amount of the object to be processed (Gs) is not changed. [B] the second elapsed time t _2, that is, in 20 minutes after the t _1, the average quantity of exhaust gas (Em) has increased to 23500Nm ³ / h, is exceeded the target upper limit (22450Nm ³ / h) , A correction value (Ag) is calculated for the deviation (ΔE) of 1050 Nm ³ / h, the correction value (Ag) is set to 3.6 t / d, and based on this, the target burning rate is set to 1.93 t / h. Fixed. At the same time, the amount of increase (Gi) is changed to the correction value (Ag).
0.9t / d, which is 25% of the above. [C] Third elapsed time t _3, in 20 minutes after the words t _2, the average amount of exhaust gas (Em) has decreased to 20000 nm ³ / h, equal to or less than the target upper limit value (22450Nm ³ / h) Therefore, the correction value (Ag) is changed to the increase amount (G
i) was reduced to 2.7 t / d and the target burning rate was revised to 1.97 t / h based on this. [D] Fourth elapsed time t _4, that is, in the 20 minutes after the t _3, although the average amount of exhaust gas (Em) is somewhat increased 20500Nm ³ / h, the target upper limit value (22450Nm ³ /
h) Since it is less than the above, the correction value (Ag) is corrected to 1.8 t / d by subtracting the increase amount (Gi), and the target incineration pace is corrected to 2.01 t / h based on this. did. [E] Fifth elapsed time t _5, that is, in the 20 minutes after the t _4, although the average amount of exhaust gas (Em) is somewhat increased 21000Nm ³ / h, the target upper limit value (22450Nm ³ /
h) Since the value is less than or equal to the above, the correction value (Ag) is corrected to 0.9 t / d by subtracting the increase amount (Gi), and the target burning rate is corrected to 2.05 t / h based on this. did. [F] After the sixth elapsed time t ₆ , that is, 20 minutes after t ₅ , although the average exhaust gas amount (Em) has increased to 21500 Nm ³ / h, it has become equal to or less than the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) was corrected to 0.0 t / d by subtracting the increase amount (Gi). as a result,
The target incineration pace was corrected to 2.08 t / h and restored,
It has recovered to normal.

[Second Embodiment] FIG. 5 shows the total exhaust gas amount (E
In this example, the total exhaust gas amount (Et) exceeds the target upper limit (Eu) again during the process of normal recovery after t) once exceeds the target upper limit (Eu), and then recovers normally. . [A] At the first elapsed time t ₁ , the average exhaust gas amount (E
m) is 22000 Nm ³ / h, and the target upper limit (2245)
0Nm ³ / h) or less, the setting is not changed, and the target incineration pace set by the supply amount of treated material (Gs) maintains the initial value of 2.08 t / h, and the deviation (ΔE) is reduced. Since it is set to zero, the correction amount (ΔG) and the increase amount (Gi)
Are zero, and the supply amount (Gs) of the workpiece is not changed. [B] After 20 minutes from the second elapsed time t ₂ , that is, t ₁ , the average exhaust gas amount (Em) has increased to 23800 Nm ³ / h, and has exceeded the target upper limit value (22450 Nm ³ / h). , A correction value (Ag) is calculated for the deviation (ΔE) of 1350 Nm ³ / h, the correction value (Ag) is set to 4.5 t / d, and based on this, the target burning rate is set to 1.89 t / h. Fixed. At the same time, the amount of increase (Gi) is changed to the correction value (Ag).
Was set at 1.1 t / d, which is 25% of the above. [C] Third elapsed time t _3, in 20 minutes after the words t _2, the average amount of exhaust gas (Em) has decreased to 21000Nm ³ / h, equal to or less than the target upper limit value (22450Nm ³ / h) Therefore, the correction value (Ag) is changed to the increase amount (G
i) was reduced to 3.4 t / d and the target incineration pace was revised to 1.94 t / h based on this. [D] Fourth elapsed time t _4, that is, in the 20 minutes after the t _3, although the average amount of exhaust gas (Em) is increased again 22000Nm ³ / h, the target upper limit value (22450Nm ³ /
h), the correction value (Ag) is corrected to 2.3 t / d by subtracting the increase amount (Gi), and the target incineration pace is corrected to 1.99 t / h based on this. did. [E] In the fifth elapsed time t ₅ , that is, 20 minutes after t ₄ , the average exhaust gas amount (Em) further increases to 23000 Nm ³ /
h, and exceeds the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) is again corrected for the deviation (ΔE) of 550 Nm ³ / h based on the previous correction value (Ag). Is calculated, the correction value (Ag) is set to 4.1 t / d, and based on this, the target incineration pace is corrected to 1.91 t / h. With this,
The increase (Gi) was set to 1.0 t / d, which is 25% of the correction value (Ag). [F] At the sixth elapsed time t ₆ , that is, 20 minutes after t ₅ , the average exhaust gas amount (Em) has decreased to 20,000 Nm ³ / h, and has become equal to or less than the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) is changed to the increase amount (G
i) was reduced to 3.1 t / d and the target incineration pace was revised to 1.96 t / h based on this. [G] Seventh elapsed time t _7, that is, in the 20 minutes after the t _6, although the average amount of exhaust gas (Em) is somewhat increased 20500Nm ³ / h, the target upper limit value (22450Nm ³ /
h) Since it is less than the above, the correction value (Ag) is corrected to 2.0 t / d by subtracting the increase amount (Gi), and the target incineration pace is corrected to 2.00 t / h based on this. did. [H] Eighth elapsed time t _8, that is, in the 20 minutes after the t _7, although the average amount of exhaust gas (Em) is somewhat increased 21000Nm ³ / h, the target upper limit value (22450Nm ³ /
h) Since it is less than or equal to the above, the correction value (Ag) is corrected to 1.0 t / d by subtracting the increase amount (Gi), and the target burning rate is corrected to 2.04 t / h based on this. did. [I] At the ninth elapsed time t ₉ , that is, 20 minutes after t ₈ , although the average exhaust gas amount (Em) has increased to 21500 Nm ³ / h, it has become equal to or less than the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) was corrected to 0.0 t / d by subtracting the increase amount (Gi), and as a result, the target incineration pace was corrected to 2.08 t / h to recover.

[Third Embodiment] FIG. 6 shows the total exhaust gas amount (E
This is an example in which t) continuously exceeds the target upper limit value (Eu) twice and then recovers normally. [A] At the first elapsed time t ₁ , the average exhaust gas amount (E
m) is 22000 Nm ³ / h, and the target upper limit (2245)
0Nm ³ / h) or less, the setting is not changed, and the target incineration pace set by the supply amount of treated material (Gs) maintains the initial value of 2.08 t / h, and the deviation (ΔE) is reduced. Since it is set to zero, the correction amount (ΔG) and the increase amount (Gi)
Are zero, and the supply amount (Gs) of the workpiece is not changed. [B] the second elapsed time t _2, that is, in 20 minutes after the t _1, the average quantity of exhaust gas (Em) has increased to 24000Nm ³ / h, is exceeded the target upper limit (22450Nm ³ / h) , A correction value (Ag) is calculated for the deviation (ΔE) of 1550 Nm ³ / h, the correction value (Ag) is set to 5.2 t / d, and based on this, the target burning rate is set to 1.87 t / h. Fixed. At the same time, the amount of increase (Gi) is changed to the correction value (Ag).
Was set at 1.3 t / d, which is 25% of the above. [C] After 20 minutes from the third elapsed time t ₃ , that is, t ₂ , the average exhaust gas amount (Em) decreased to 23000 Nm ³ / h, but exceeded the target upper limit value (22450 Nm ³ / h). The correction value (Ag) is calculated again based on the previous correction value (Ag) for the difference (ΔE) of 550 Nm ³ / h, and the correction value (Ag) is set to 6.9 t / d. The target incineration pace has been revised to 1.80 t / h. At the same time, the amount of increase (Gi) was set to 1.7 t / d, which is 25% of the correction value (Ag). [D] Fourth elapsed time t _4, in 20 minutes after the words t _3, since the average amount of exhaust gas (Em) is reduced to 21500Nm ³ / h, no longer reach the target upper limit value (22450Nm ³ / h), the The correction value (Ag) was corrected to 5.2 t / d by subtracting the increase (Gi), and based on this, the target burning rate was corrected to 1.87 t / h. [E] In the fifth elapsed time t ₅ , that is, 20 minutes after t ₄ , the average exhaust gas amount (Em) has decreased to 22000 Nm ³ / h, and has become equal to or less than the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) is changed to the increase amount (G
i) was reduced to 3.4 t / d and the target incineration pace was revised to 1.94 t / h based on this. [F] At the sixth elapsed time t ₆ , that is, 20 minutes after t ₅ , the average exhaust gas amount (Em) has decreased to 21800 Nm ³ / h, and has become equal to or less than the target upper limit value (22450 Nm ³ / h). Therefore, the correction value (Ag) is changed to the increase amount (G
i) was reduced to 1.7 t / d and the target incineration pace was revised to 2.01 t / h based on this. [G] Seventh elapsed time t _7, that is, in the 20 minutes after the t _6, although the average amount of exhaust gas (Em) is somewhat increased 22000Nm ³ / h, the target upper limit value (22450Nm ³ /
h) Since it is below, the correction value (Ag) is corrected to 0.0 t / d by subtracting the increase amount (Gi), and as a result, the target incineration pace is corrected to 2.08 t / h. And recovered.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of an incinerator according to the present invention.

FIG. 2 is a flowchart showing an example of waste supply control according to the present invention.

FIG. 3 is a configuration diagram showing another example of the incinerator according to the present invention.

FIG. 4 is a diagram illustrating a first embodiment of setting a supply amount of a processing target according to the present invention.

FIG. 5 is a diagram for explaining a second embodiment of setting the supply amount of the workpiece according to the present invention.

FIG. 6 is a diagram for explaining a third embodiment of setting the supply amount of the workpiece according to the present invention.

FIG. 7 is a flowchart showing another example of waste supply control according to the present invention.

FIG. 8 is a configuration diagram showing an example of a conventional incinerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving hopper 2 Supply mechanism 25 Exhaust gas total amount sensor 26 Average exhaust gas amount detecting means 27 Upper limit value setting means 28 Supply amount setting means 29 Correction value calculating means 30 Correction amount calculating means 31 Recovery means

Claims (4)

[Claims] A supply mechanism (2) for supplying an object to be treated put into a receiving hopper (1) to a furnace; A supply amount setting means (28) capable of setting a supply amount of the workpiece is provided, and the supply mechanism (2) is controlled based on the supply amount of the workpiece set in the supply amount setting means (28). An incinerator feed amount control device configured as described above, wherein a total exhaust gas amount sensor (25) capable of detecting a total exhaust gas amount from the furnace and a preset target upper limit value can be set. When the total exhaust gas amount detected by the exhaust gas total amount sensor (25) exceeds the target upper limit value, the correction value for the set processing object supply amount is set. Correction value calculating means (2)
9) An apparatus for controlling the supply amount of an incinerator to be treated, wherein the supply amount of the object to be treated can be corrected based on the correction value calculated and derived. 2. A correction coefficient preset to a deviation of the average exhaust gas amount obtained by averaging the total exhaust gas amount detected by the exhaust gas total amount sensor within a predetermined time from the target upper limit value. And the correction value calculating means (2
2. The apparatus according to claim 1, wherein the apparatus is derived from the calculation in (9). 3. The total exhaust gas amount is integrated for a predetermined time,
An average exhaust gas amount detecting means for obtaining an average exhaust gas amount per hour; and a correction in which a value obtained by dividing a deviation of the obtained average exhaust gas amount from the target upper limit value by the average exhaust gas amount is multiplied by the target incineration processing amount. Correction amount calculating means (3)
The correction value calculation means (29) is configured to multiply the obtained correction amount by the correction coefficient to calculate and derive the correction value. Processing object supply amount control device. 4. A method for correcting the corrected supply amount after correcting the supply amount of the workpiece by the correction value based on a preset increase rate for recovering the corrected supply amount of the workpiece. 4. The apparatus according to claim 1, further comprising a recovery unit configured to increase the supply amount of the processing target based on the processing amount. 5.