JP2003254526A - Garbage supply heat quantity measuring device and garbage supply control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize a combustion state of an incinerator by performing supply control using a garbage supply heat quantity by calculating the garbage supply heat quantity being an index of the control. <P>SOLUTION: A garbage surface shape just before and just after newly inputting garbage to a hopper is calculated by the distance distribution detected by a scanning laser type level gauge arranged above the hopper, and the inputted garbage volume is calculated on the basis of this surface distance. A specific gravity and a heat quantity of newly inputted garbage are calculated on the basis of this calculated garbage volume and weight of the garbage inputted in the hopper, and these data are classified and stored with every input. The supply heat quantity is calculated on the basis of these data, and a garbage supply means is controlled so that the supply heat quantity per unit time becomes constant. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a refuse supply heat quantity measuring device for measuring the supply heat quantity of refuse stored in a hopper attached to an incinerator for incinerating municipal waste and industrial waste, and the like. The present invention relates to a refuse supply control device using a refuse supply calorie measuring device.

[0002]

2. Description of the Related Art Generally, a hopper is attached to an incinerator for incinerating municipal solid waste or industrial waste, and the waste is picked up by a crane and put into the hopper.
The dust is provided in the lower part of the hopper so that the dust is sequentially supplied to the incinerator. Here, there is a pusher type as a type often used as a dusting apparatus, and a stoker furnace as a type often used as an incinerator.

Such an incinerator plays an important role in treating various discharged wastes. Also,
In recent years, there has been growing interest in recovering the thermal energy generated by the incineration of waste waste, and the number of waste incinerators equipped with boiler power generation facilities has increased, so that the heat can be efficiently recovered in the boiler. It is required to maintain a stable combustion state in the furnace. On the other hand, as the regulation of environmental pollutants released into the atmosphere becomes stricter, it becomes necessary to suppress the generation of dioxins and NOx.

For this reason, combustion control is performed so that the boiler evaporation amount and the temperature in the incinerator fall within the specified range, so that the generation of dioxins, NOx, etc. is suppressed and the heat is efficiently recovered in the boiler. Has been

By the way, such combustion control is carried out by an incinerator or a sensor provided downstream of the incinerator, a boiler evaporation amount, a furnace temperature, and CO generated by combustion.
Detects the amount of dioxins, NOx, etc. generated, and if they deviate from the allowable range, increase or decrease the amount of primary combustion air blown in, distribute primary combustion air to each stoker stage, or adjust the movement speed of the stoker itself. The combustion control and the like are performed. By performing such combustion control, the amount of boiler evaporation, the furnace temperature, and the amount of CO, dioxins, NOx, etc. generated by combustion are kept within a predetermined range.

[0006]

However, according to the combustion control performed in such an incinerator, the upstream incineration is based on the information detected by the incinerator or a sensor or the like provided downstream thereof. Since the control method that uses the data detected on the downstream side as an index, which controls combustion in the furnace, is adopted, it is necessary to respond in real time to the quality of waste stored in the hopper or changes in that quality. There is a problem that you cannot do it.

As a result, the combustion state in the incinerator may become unstable, causing increased production of dioxins, CO, NOx, etc., increased unburned substances, and abnormal rise and fall of the furnace temperature. However, there is a problem in that the efficiency of heat recovery by the boiler is reduced.

The present invention has been made in order to solve such a problem, and supplies the dust supplied to the incinerator from the dust supply device provided in the lower part of the hopper, which serves as an index for the downstream control. We provide a garbage supply calorie measuring device that can measure the calorific value, and also realize a more stable combustion state in the incinerator, thereby suppressing the generation of dioxins, CO, NOx, etc., and generating unburned substances. It is an object of the present invention to provide a refuse supply control device that can prevent the abnormal increase or decrease of the furnace temperature and improve the efficiency of heat recovery by the boiler.

[0009]

Means for Solving the Problems and Actions / Effects In order to achieve the above object, the apparatus for measuring the amount of heat supplied to waste according to the first aspect of the present invention measures the amount of heat supplied to the incinerator from the bottom of the hopper. A garbage supply calorimeter,
(A) input dust weight detection means for detecting the weight of input dust put into the hopper every time the dust is put into the hopper; and (b) inside the hopper every time dust is put into the hopper. Input dust volume detecting means for detecting the volume of input dust thrown into the hopper from the height position of the dust surface, and (c) Dust for detecting the amount of movement of dust generated when dust is put into the hopper. Movement amount detection means,
(D) Waste moving volume detecting means for detecting the moving volume of the waste supplied into the incinerator from the change of the height position of the waste surface in the hopper per unit time; and (e) the waste moving amount detecting means. The value detected by the input waste volume detection means is corrected to obtain the final input waste volume, and the obtained input waste volume and the input waste weight detected by the input waste weight detection means are calculated. Based on the calculated specific gravity of the input waste that has been input to the hopper, and based on the specific gravity of the input waste and the waste transfer volume detected by the transfer volume detecting means, supply of the waste per unit time supplied to the incinerator. It is characterized in that it comprises a calculation means for calculating the heat quantity.

According to the refuse supply calorie measuring device in the first aspect of the invention, every time the dust is thrown into the hopper, the thrown-in dust weight detecting means detects the thrown-in dust weight of the thrown-in dust. On the other hand, by the input waste volume detection means,
The height position of the dust surface in the hopper is detected, and the thrown dust volume of the dust thrown into the hopper is calculated from the detected height position. Further, the movement of the dust inside the hopper due to the dust compression or the like that occurs at the time of such charging is detected by the dust movement amount detecting means. On the other hand, the moving volume of the refuse supplied to the incinerator is detected by the moving volume detecting means for dust based on the change of the height position of the surface of the dust in the hopper per unit time. Next, in the calculation means, the detection value by the input dust volume detection means is corrected by the detection value by the waste movement amount detection means to obtain the final input waste volume, and the obtained input waste volume, Based on the weight of the input waste detected by the input weight detection means, the specific gravity of the input waste input to the hopper is calculated, and the specific gravity of the input waste is supplied to the incinerator detected by the moving volume detection means. The heat supply amount of the waste per unit time supplied to the incinerator is calculated based on the generated moving volume of the waste.

The amount of heat supplied to the refuse per unit time calculated as described above is calculated based on the information obtained before the refuse is supplied to the incinerator and on the hopper or the upstream side thereof. Therefore, when used as an index for dust supply control, combustion control, etc. performed downstream from the hopper, it is possible to perform real-time adaptive control of dust quality in the hopper or changes in the dust quality. .

In the refuse supply calorie measuring device of the first invention, the input dust volume detecting means and the dust moving volume detecting means are installed above the hopper to scan the dust surface in the hopper. A scanning laser level meter for measuring the distance to the dust surface is preferable (second invention). In this way, the distance on the surface of the dust can be scanned one-dimensionally or two-dimensionally, and thereby the exact volume of dust (input dust volume and dust movement volume) can be detected.

In the first or second aspect of the invention, it is preferable that the dust movement amount detecting means is a roller type rotary dust speed meter provided so as to project from the side wall of the hopper into the hopper ( Third invention). With this configuration, the movement of dust in the hopper can be detected more accurately than the degree of rotation of the rotary dust speed meter.

Next, the waste supply control device according to the fourth aspect of the present invention is a waste supply control device for supplying the waste thrown into the hopper from the lower part of the hopper to the inside of the incinerator by means of a dusting means. Input dust weight detection means for detecting the weight of the input dust put into this hopper each time the dust is put into the hopper, and (b) every time the dust is put into the hopper, the dust surface inside the hopper A throwing dust volume detecting means for detecting the throwing dust volume thrown into the hopper from a height position, and (c) a dust moving amount detecting means for detecting a moving amount of dust generated when dust is thrown into the hopper. And (d) waste moving volume detecting means for detecting the moving volume of the waste supplied into the incinerator from the change of the height position of the waste surface in the hopper per unit time, and (e) the waste moving amount. By detecting means The final input waste volume is calculated by correcting the detection value by the input waste volume detection means based on the detected value, and based on the obtained input waste volume and the input waste weight detected by the input waste weight detection means. , Calculate the specific gravity of the input waste that is input to the hopper,
And (f) calculating means for calculating the amount of heat supplied to the incinerator per unit time from the specific gravity of the input waste and the waste moving volume detected by the waste moving volume detecting means; Based on the calculated heat supply amount of dust per unit time, the control device controls the dust supply means such that the heat supply amount of the dust supplied by the dust supply means becomes constant. is there.

According to the fourth aspect of the supply control device, the dust is collected by the information obtained before the dust is fed into the incinerator by the dust feeding means and on the upstream side of the dust feeding means. The amount of heat supplied per unit time is calculated, and the dust supply means is controlled so that the amount of heat supplied is constant. Therefore, even if the state of the waste in the hopper changes, the heat supply amount of the waste supplied to the incinerator can be made constant corresponding to the state in real time. In this way, a very stable combustion state can be realized in the incinerator, and accordingly, CO,
Controls the amount of dioxins, NOx, etc., reduces the generation of unburned substances, and further raises the furnace temperature abnormally.
The descent can be prevented, and the efficiency of heat recovery by the boiler can be improved.

In the fourth invention, the dust supply means is
It is preferable that the control means includes a pusher that pushes out the dust by reciprocating motion, and the control means controls the amount of dust supplied by controlling either the speed or the stroke of the pusher (fifth invention). When a pusher device is used as the dust supply means in this way, the heat supply amount of the dust can be controlled by controlling either one or both of the operating speed and the stroke of the pusher device.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, specific embodiments of a refuse supply calorie measuring device and a refuse supply control device according to the present invention will be described with reference to the drawings.

FIG. 1 is a system configuration diagram of a refuse supply control device according to an embodiment of the present invention.

In this embodiment, a stoker type incinerator 1 for incinerating dust and the like is provided, and this incinerator 1 is provided with a hopper 2 for storing dust. Further, a dust supply device 4 is installed in the lowermost part of the hopper 2, that is, in the most upstream part of the stepped stoker 3 including the dry stoker 3a, the combustion stoker 3b, and the post-combustion stage stoker 3c.

The dust feeding device 4 is a pusher type (reciprocating type) device, and reciprocates between the pusher (dust feeding device) 6 which is reciprocated along the upper surface of the flat step 5 and the pusher 6. And a driving mechanism 7 for moving. In addition, outside the hopper, a garbage pit (not shown) for temporarily storing municipal waste collected from garbage trucks is attached, and the garbage picked up from this garbage pit is above the hopper 2. Is loaded into the hopper 2 by the crane 8. The dust thus thrown sequentially falls onto step 5, and the dust on this step 5 is sequentially cut out onto the drying stoker 3a by the reciprocating motion of the pusher 6.

A weight scale 9 is attached to the crane 8 to measure the weight of the picked-up dust and send it as weight data. Above the hopper 2, the distance to the surface of the dust is two-dimensionally measured. A scanning laser level meter 10 for scanning and creating and transmitting distance distribution data (of the distance between the eyes) is arranged. Further, on one side surface of the hopper, a rotary dust speed meter 11 is attached, which measures a moving distance of dust in the hopper and transmits it as moving distance data.

Outside the hopper 2, there is provided a dust quality / heat supply amount calculator 12 for calculating various data such as dust quality and heat supply amount, which will be described later. The weighing scale 9, the scanning laser level gauge 10, and the rotary garbage speed gauge 11 are electrically connected to the input section.

Further, the refuse quality / heat supply amount calculation device 12
The output section of is electrically connected to the input section of the control device 13 for calculating and transmitting various control signals described later. The output part of the control device 13 includes a control mechanism 7 of the pusher 6, the drying stoker 3a, and the combustion stoker 3b.
Is electrically connected to a control mechanism (not shown).

The weight scale 9 attached to the crane 8 measures the weight of the dust every time the dust in the dust pit is picked up, and the data (weight data) is used to calculate the dust quality and the amount of heat supplied. It is adapted to transmit to the device 12.

As shown in FIG. 2, the scanning laser level meter 10 arranged above the hopper 2 projects laser light onto a substance while deflecting it in one direction and receives the reflected light. Thus, a conventionally known laser type level meter having a function of scanning a substance one-dimensionally (linearly) is deflected in the direction perpendicular to this deflection direction (± θx direction in FIG. 2A) (see FIG. 2). (± θy direction in (b)). This two-dimensional scanning laser level meter 10 has a θ so that a line parallel to one side of the hopper can be scanned by the deflection in the θx direction.
The deflection direction in the x direction is adjusted. By deflecting in the θx direction and the θy direction, the distance to the substance can be known three-dimensionally.

According to the scanning laser type level meter 10, as shown in FIG. 2 (a), first, as in the case of the conventionally known laser type level meter, the laser beam is projected while being deflected in the + θx direction. Light is received. By doing so, as shown in FIG. 2C, a line parallel to one side of the hopper 2 is scanned. Next, as shown in FIG. 2B, the deflection of + Δθy is performed in the θy direction. By doing so, as shown in FIG.
The scanning start position is changed by the deflection in the x direction. Then, the distance of the deflected scanning line is measured by projecting and receiving laser light while deflecting in the −θx direction.
Next, after changing again by + Δθy with respect to the θy direction, laser light is projected and received while being deflected in the + θx direction. By repeating such work, the surface of the dust is two-dimensionally (planarly) scanned, and three-dimensional distance distribution data is created. The above-described scanning is continuously performed, and three-dimensional distance distribution data is created and transmitted sequentially to the dust quality / heat supply amount calculation device 12 each time the scanning is completed.

On the other hand, the rotary type dust speed meter 11 is provided to detect the amount of movement of dust inside the hopper 2, which is caused by dust compression when dust is newly introduced into the hopper 2. Specifically, the moving distance L due to the weight of the thrown-in dust is measured. This rotary garbage speed meter 1
As shown in FIG. 3, 1 is attached so that a part of the roller protrudes into the hopper 2 from a notch provided in the side wall of the hopper 2, and by throwing in new dust, The dust already stored in the hopper is compressed, and the friction between the dust and the roller generated during this compression causes the roller to rotate. The moving distance L [m] of the dust due to compression is detected based on this rotation amount. Moving distance L of this garbage
[M] is transmitted to the dust quality / heat supply amount calculation device 12 as moving distance data.

In the dust quality / heat supply amount calculating device 12, the weight data obtained by the weight scale 9 and the distance distribution data immediately before and after the dust throwing obtained by the scanning laser level meter 10 and the rotation Type garbage speed meter 11
The volume, weight, and specific gravity (heat generation amount) of the thrown-in dust are calculated and stored for each throw-in by data processing according to a flow described later based on the moving distance data obtained by. In addition, based on the distance distribution data created by the scanning laser level meter 10 and transmitted sequentially, the hopper 2
The total volume of waste stored inside is calculated and stored.

A change in the total volume of waste per unit time is calculated from the sequentially stored total volume of waste, and the movement volume of the waste (dust volume in the hopper is calculated from the change in the total volume of waste per unit time. Of the amount of heat supplied per unit time is calculated by data processing according to the flow described below based on this moving volume and various data that is detected (or calculated) and stored every time dust is thrown in. To be done. The supplied heat quantity is transmitted as the supplied heat quantity data.

Next, the flow of dust quality estimation in the present embodiment will be described in detail with reference to the flowchart shown in FIG. In the following description, the crane 8
The number of times the waste is charged by is represented by a variable t, and the volume, weight, specific gravity, and quality of the waste (heat quantity of the waste) thrown at the number of times t are respectively Q (t), W (t), R (t), H
It is shown as u (t). In addition, by the time the start of this flow, garbage having the number of times t = n−1 has been thrown into the hopper 2 by the crane 8, and the dust supply device 4 below the hopper 2 is
The number of times t of the crane 8 is loaded t = n-th time (the number of times of loading at the time n-i is the garbage to be thrown in next, that is, the number of times t
= Shows the number of times the waste is thrown in i times before n times. ) Just before the waste is supplied.

A1: The surface of the dust stored in the hopper 2 is scanned using the scanning laser type level meter 10, and the distance distribution of the dust surface immediately before the dust is thrown in t = n times. Data is created and transmitted to the waste quality / heat supply amount calculation device 12. A2: In the dust quality / heat supply amount calculation device 12, in the previous step A1, the scanning laser level meter 10 is used.
The three-dimensional distance distribution data immediately before being thrown into the hopper, which is created by the above, is received, and the distance distribution data and the shape of the hopper 2 and the installation coordinates of the scanning laser level meter 8 which are input in advance are received. Based on this, the surface cross-sectional shape of the dust stored in the hopper 2 immediately before loading is analyzed. Then, based on the surface shape of the dust and the shape of the hopper 2, the total volume Q _total [m ³ ] of the dust stored in the hopper 2 immediately before being input is calculated (see FIG. 3).

A3: The weight W (n) [kg] of the dust picked up by the crane 8 (the number of times t = nth) is detected by the weight scale 9 and used as weight data to calculate the quality of waste / heat supply quantity. Send to 12.

A4: After the dust picked up by the crane 8 (the number of times t = nth time) is thrown into the hopper 2, the surface of the dust stored in the hopper 2 is scanned, and the number of times t is thrown. = Distance distribution data immediately after the n-th waste is thrown in, and the waste quality / heat supply amount calculation device 1
Send to 2. A5: In the same manner as in Step 2 above, the surface cross-sectional shape of the dust immediately after being thrown in is analyzed based on the distance distribution data immediately after being thrown in, and the total volume Q ′ _total [m ³ ] is calculated.

A6: (Movement number t = nth time) After the garbage is thrown, the moving amount of the dust caused by the compression of the dust generated inside the hopper is detected, and the moving distance L [m] is used as the moving distance data to supply and quality It transmits to the calorie calculation device 12. A7: The moving distance data of the dust (moving distance L [m]) detected and transmitted by the rotary garbage speed meter 11 after throwing in the garbage, and the cross-sectional area of the hopper 2 at the mounting portion of the rotary garbage speed meter 11 Based on S [m ² ] (identified by the shape of the hopper that has been input in advance) and the calculation formula V [m ³ ] = S [m ² ] × L [m], the dust is moved by the dust compression. The amount of waste (moving volume of waste) V [m ³ ] is calculated.

A8: Waste level Q before throwing in
_total[M^Three], And the garbage level Q'after throwing in
_total[M^Three], And the amount of waste V that was moved when the waste was loaded
[M^Three] And formula Q (n) [m^Three] = Q '_total[M^Three] -Q
_total[M^Three] + V [m^Three] Based on, and the input waste volume at the time t = n
(Indicates the volume of garbage thrown in.) Q (n) [m^Three]
Ask.

A9: Input waste volume Q (n) [m ³ ] at the number of inputs t = n, and input waste weight (weight of input waste) W (detected by weight scale 9 provided on the crane 8) n) [kg] and calculation formula R (n) [kg / m ³ ] = W (n) [kg] / Q (n)
Based on [m ³ ], specific gravity R of input waste (specific gravity of input waste)
Calculate (n). A10: Based on input waste specific gravity R (n) [kg / m ³ ] and actual measurement data showing a correlation between the waste specific gravity and the waste quality (heat quantity of waste), input waste quality (waste quality of thrown waste) Hu
(N) Estimate [MJ / kg].

The calculation shown by such a flow is repeated for each input of waste, and the input waste volume Q (t) and input waste weight W are calculated by the waste quality / waste supply heat amount calculation device 12.
(T), specific gravity of input waste R (t), input waste quality Hu (t)
Is stored for each number of inputs.

Next, the calculation of the heat supply amount of dust and the dust supply control in this embodiment will be described in detail with reference to the flowchart shown in FIG.

Inside the hopper 2, the number of times t is input is t = n.
The number of refuse and the number of times of throwing t = n−1 time, the number of times of throwing t = n−2 time, ..., and the number of times of throwing t = n−i
It is a state in which the garbage of the second time is stored and stacked, and the garbage of the number of times t = ni is the pusher 6 of the dust feeding device 4.
It is in a state immediately before being supplied to the incinerator 1. In addition, as described above, the waste quality / heat supply amount calculation device 12 uses the volume Q (t) of input waste, the weight W (t) of input waste, and the specific gravity R (t) of input waste up to the number of input times t = n. , Input waste quality H
u (t) is stored for each number t of inputs.

B1: the waste quality / heat supply amount calculation device 12
At, the total volume of dust in the hopper 2 is calculated based on the distance distribution data sequentially transmitted from the scanning laser level meter 10 and sequentially stored (see step A1 and step A2). Then, based on the data of the total volume, the time differential of the volume is performed to calculate the moving volume of dust in the hopper 2 (the degree of variation of the total volume) dQ [m ³ / h]. B2: Moving volume of dust dQ [m ³ /
h] and various data stored in the waste quality / heat supply amount calculation device 12 (input waste volume Q (t), input waste weight W (t), input waste specific gravity R (t), input waste quality Hu
Based on (t)), the number of times the dust is thrown into the incinerator 1 from the dust supply device 4 immediately before it is calculated. (In the present embodiment, this corresponds to the garbage just before the garbage is supplied at the number of times t = ni). B3: Moving volume dQ calculated from the previous step B1.
[M ³ / h], the specific gravity R (n−i) [kg / m ³ ] of the waste just before being supplied into the waste incinerator 1, and the calculation formula dW [kg / h] = dQ [m ³ / h ] × R (n−i)
Based on [kg / m ³ ], the moving weight of dust inside the hopper 2 dW [kg /
h] is calculated. B4: Moving weight of waste dW [kg / h], quality of waste (heat quantity of waste) Hu (n−i) [MJ / kg], and calculation formula dR [MJ / h] = dW [kg / h] × Hu ( ni)
Based on [MJ / kg] and immediately before being supplied to the waste incinerator, the heat supply amount dR [MJ / h] of waste per unit time is calculated,
It is transmitted to the control device 13 as the supplied heat amount data.

B5: In the controller 13, the heat supply amount d of the dust per unit time calculated in the previous step B4
R [MJ / h] is received, and the operation speed (dusting speed) of the pusher 6 and the operation speed of the drying stoker 3 a adjacent to the pusher 6 are calculated so that the amount of heat supplied to the dust is constant.

B6: Based on the calculated operation speed of the pusher 6, a supply control signal is transmitted to the control mechanism 7 of the pusher 6, and at the same time, based on the calculated moving speed of the drying stoker 3a, the drying stoker 3a (not shown) is shown. Send a speed control signal to the control mechanism.

In the driving device 7 which has received the supply control signal thus calculated, the dust supply speed of the pusher 6 is adjusted based on the received supply control signal, and the amount of dust supplied from the pusher 6 to the drying stoker 3a. Is controlled. Similarly, in the drying stoker 3a, the moving speeds of the drying stoker 3a and the burning stoker 3b are controlled based on the received speed control signal, and the drying time of the dust cut off by the drying stoker 3a is controlled.

By executing such control,
The amount of heat supplied to the incinerator 1 can be kept constant regardless of changes in the quality of the waste in the hopper, and the drying time of the waste can be adjusted to suit the amount of heat supplied. The combustion state of dust in the incinerator 1 can be stabilized. By doing so, CO,
It is possible to reduce the generation of NOx and the like, prevent the generation of unburned substances, suppress the generation of dioxins, keep the furnace temperature within an allowable range, and further improve the efficiency of heat recovery by the boiler.

In this embodiment, the operation speed of the pusher 6 is controlled to control the supply amount, but the stroke of the pusher 6 may be controlled.

In the present embodiment, the pusher type dusting means is used, but the idea of the present invention is that another dusting means (for example, screw type dusting device) is used.
Can be adapted even when using.

Further, in this embodiment, supply control based on the amount of heat supplied to the dust, specifically, the pusher 6 is used.
Although the description has been limited to the feeding speed of the dry stoker 3a and the speed control of the drying stoker 3a provided adjacent to the pusher 6,
The dampers respectively provided in the air ducts connecting the primary combustion air blower and the respective stoker stages are electrically controlled by the control device 13 based on the amount of heat supplied to the dust, and the blowing amount of the primary combustion air into the respective stoker stages and its The distribution may be controlled. Even in such a case, since data such as the quality of the waste in the hopper is stored for each number of inputs, it is possible to easily calculate when and what kind of waste the quality of waste will be supplied to the incinerator 1. Therefore, it is possible to perform combustion control that is most adapted to the quality of waste supplied in real time.

Further, in this embodiment, the volume of dust in the hopper (the volume of dumped dust) is determined based on the three-dimensional distance distribution data detected by the scanning laser level meter 10 of the type that operates the dust surface two-dimensionally. And garbage transfer volume)
However, a conventionally known scanning laser level meter that performs one-dimensional scanning may be used.
In such a case, since it is more strict than the two-dimensional scanning type, it is necessary to perform an approximate calculation based on actual measurement in order to obtain accurate data. Even in such a case, the volume of dust in the hopper can be obtained.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a refuse supply control device according to a first embodiment of the present invention.

FIG. 2A is a θx of a scanning laser level meter (of a type that scans in a two-dimensional direction) according to the present embodiment.
2B is an operation explanatory diagram in the θy direction of the scanning laser level meter, and FIG. 2C is an explanatory diagram illustrating scanning by the scanning laser level meter. Is.

FIG. 3 is an explanatory diagram illustrating detection of a moving distance of dust by the rotary type dust moving distance detecting device according to the present embodiment.

FIG. 4 is a flowchart illustrating a process of calculating dust quality according to the present embodiment.

FIG. 5 is a diagram showing calculation of a heat supply amount according to the present embodiment,
It is a flow chart explaining the process of control based on and the amount of heat supply.

[Explanation of symbols]

1 incinerator 2 hoppers 3 stalker 3a dry stoker 4 Dust feeder 6 pushers 7 control mechanism 8 cranes 9 Weighing scale 10 Scanning laser level meter 11 Rotary garbage speed meter 12 Waste quality / heat supply amount calculator 13 Control device

Continued front page    F-term (reference) 2F014 FA01                 3K062 AA02 AB01 AC01 BA02 CA06                       CB01 CB03 DA32 DA33 DA34                       DA36 DA38 DB01                 3K065 AA02 AB01 AC01 EA06 EA15                       EA28

Claims (5)

[Claims] 1. A waste supply heat quantity measuring device for measuring the quantity of heat supplied to the incinerator from the bottom of the hopper, comprising: (a) every time the waste is put into the hopper, the waste heat is put into the hopper. Input waste weight detection means for detecting the weight of the input waste, and (b) every time the waste is input to the hopper, the volume of the input waste input to the hopper is detected from the height position of the surface of the waste inside the hopper. Input dust volume detection means, and (c) dust movement amount detection means for detecting the movement amount of dust generated when dust is thrown into the hopper,
(D) Waste moving volume detecting means for detecting the moving volume of the waste supplied into the incinerator from the change of the height position of the waste surface in the hopper per unit time; and (e) the waste moving amount detecting means. The value detected by the input waste volume detection means is corrected to obtain the final input waste volume, and the obtained input waste volume and the input waste weight detected by the input waste weight detection means are calculated. Based on the calculated specific gravity of the input waste that has been input to the hopper, and based on the specific gravity of the input waste and the waste transfer volume detected by the transfer volume detecting means, supply of the waste per unit time supplied to the incinerator. A refuse supply heat quantity measuring device comprising a calculation means for calculating heat quantity. 2. The scanning dust volume detecting means and the dust moving volume detecting means are installed above the hopper and scan the dust surface in the hopper to measure the distance to the dust surface. The refuse supply calorie measuring device according to claim 1, which is a laser type level meter. 3. The refuse supply heat amount measurement according to claim 1, wherein the refuse movement amount detecting means is a roller-type rotary refuse speed meter provided so as to project from a side wall of the hopper into the hopper. apparatus. 4. A refuse supply control device for supplying refuse introduced into a hopper into the incinerator from a lower portion of the hopper by means of a dusting means, wherein (a) every time the refuse is introduced into the hopper, An input dust weight detecting means for detecting the weight of the input dust put in the hopper, and (b) every time the dust is put in the hopper, the input put in the hopper from the height position of the dust surface in the hopper. Input dust volume detection means for detecting the waste volume, (c) dust movement amount detection means for detecting the movement amount of dust generated when dust is thrown into the hopper, and (d) dust surface in the hopper Waste moving volume detecting means for detecting the moving volume of the waste supplied into the incinerator from the change of the height position of the unit per unit time, (e)
The final value of the input dust volume is calculated by correcting the value detected by the input dust volume detection means by the value detected by the dust movement amount detection means, and the obtained input waste volume and the input waste weight detection means are detected. Unit for calculating the specific gravity of the input waste that has been input to the hopper based on the input waste weight, and the specific gravity of the input waste and the waste moving volume detected by the waste moving volume detecting means to the incinerator. A calculation means for calculating the amount of heat supplied to the dust per unit of time; and (f) a constant amount of heat supplied to the dust supplied from the dust supply means based on the amount of heat supplied to the dust per unit time calculated by the calculator. And a control means for controlling the dust supply means. 5. The dust supply means includes a pusher that pushes out dust by a reciprocating motion, and the control means controls the supply amount of dust by controlling either the speed or the stroke of the pusher. The waste supply control device according to claim 4, wherein