JPH086908B2 - Waste feed rate control method for waste incinerator and waste incinerator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for controlling a refuse feed rate of a refuse incinerator and a refuse incinerator, and particularly, by controlling the refuse feed rate,
The present invention relates to a method for controlling a refuse feed rate of a refuse incinerator that maintains the temperature in the refuse incinerator at an appropriate temperature, and a refuse incinerator.

[Conventional technology]

Generally, combustible waste discharged from homes is collected,
It is incinerated in a refuse incinerator and disposed of.

Such a waste incinerator generally has a hopper to which waste is supplied by a waste crane, a hopper chute that guides the waste from this hopper, a dust supply device that supplies the waste from this hopper chute to a drying stoker, and a waste dryer. It comprises a dry stoker that burns, a burning stoker that burns the waste from the dry stoker, and a post-burning stoker that burns the dust from the burning stoker and burns it.

By the way, it is regulated to maintain the temperature in the furnace in which the dust supply device, the drying stoker and the like are housed at 750 ° C to 950 ° C.

In order to keep the temperature inside the furnace constant,
Conventional, dry stoker, garbage thickness on the burning stoker,
It is known to control the feed rate of refuse.

A conventional dust incinerator for controlling the thickness of waste according to the quality of the waste is, for example, Japanese Patent Laid-Open No. 63-5801.
Those disclosed in JP-A No. 2 and JP-A No. 63-21412 are known.

[Problems to be Solved by the Invention]

However, even with such a conventional dust incinerator for a refuse incinerator, it is difficult to control the thickness of the refuse, so that there is a problem that it is difficult to reliably control the temperature inside the furnace.

In addition, in order to control the temperature inside the furnace, it takes a long time to start controlling the thickness of dust until the temperature inside the furnace is controlled. There was a problem that it was difficult to do.

Therefore, in order to surely and quickly control the temperature inside the furnace, the temperature inside the furnace has been kept constant by controlling the feed rate of dust on the drying stoker and the combustion stoker. It was

However, the method of controlling the feed rate of waste to keep the temperature inside the furnace constant is to control the feed rate based only on the temperature inside the furnace, so that it does not depend on the combustion state of the dust and burns normally. There was a problem that this was not always the case.
For example, there are cases where the temperature inside the furnace rises due to burning only the easily combustible part.In such a case, the concentration of soot and dust discharged from the chimney and the amount of unburned heat in the ash can be reduced. There was a problem that it was difficult to lower it.

The present invention has been made to solve the above problems, and by controlling the thickness of the dust and the feed speed of the dust, the dust can be burned normally and the temperature inside the furnace is ensured. An object of the present invention is to provide a method for controlling a refuse feed speed of a refuse incinerator and a refuse incinerator that can be quickly and quickly controlled.

[Means for solving the problem]

According to the method for controlling a waste feed rate of a waste incinerator according to claim 1, a dust supply device disposed below a hopper chute supplies an appropriate amount of waste according to the quality of the waste to a drying stoker every predetermined time, and this drying is performed. The dust feed device of the refuse incinerator, wherein the dust is supplied to the combustion stoker at predetermined intervals while drying the dust with the stoker, and is supplied to the post-combustion stoker while burning the dust with the combustion stoker.
When the temperature T in the furnace housing the dry stoker and the combustion stoker becomes equal to or higher than the set temperature T ₁ , the dust supply device, the dry stoker, and the combustion stoker stop supplying the dust once at a predetermined time, If the temperature T in the furnace body becomes equal to or higher than a set temperature T ₂ higher than the set temperature T ₁ before the restart of the supply of the refuse after the stop, the temperature T in the furnace body is set to the set temperature T ₂
This is done by stopping the supply of waste until the following:

The waste incinerator according to claim 2 is provided with a dust supply device that is disposed below the hopper chute to supply an appropriate amount of waste according to the quality of the waste, and a drying stoker that supplies the waste from the dust supply device while drying. A combustion stoker that supplies dust from the dry stoker while burning, a temperature sensor arranged in the furnace housing the dust feeder, the dry stoker and the combustion stoker, and the temperature T in the furnace is a set temperature T ₁ In the above case, the dust supply device, the drying stoker, and the combustion stoker are controlled so as to stop the supply of dust once every predetermined time, and after the stop, the temperature T in the furnace body is restarted before restarting the supply of dust. When the temperature exceeds a preset temperature T ₂ higher than the preset temperature T _1, a control device for controlling the supply of dust until the temperature T in the furnace body falls below the preset temperature T ₂ is provided. Is

[Work]

According to the method for controlling the refuse feed rate of the refuse incinerator according to claim 1, an appropriate amount of refuse according to the quality of the refuse is supplied to the drying stoker by a dusting device arranged below the hopper chute at predetermined intervals. The waste is dried by the dry stoker and supplied to the combustion stoker every predetermined time, and the waste is combusted by the combustion stoker and supplied to the post-combustion stoker.

When the temperature T in the furnace housing the dust supply device, the dry stoker, and the combustion stoker becomes equal to or higher than the set temperature T ₁ , the dust supply device, the dry stoker, and the combustion stoker supply dust at predetermined time intervals. There is aborted once, when the temperature T of the furnace body before the resumption of the supply of discontinuation after the garbage has become high set temperature T ₂ or higher than the set temperature T ₁ is set to the temperature T of the furnace body temperature T ₂ The waste supply will be suspended until:

In the waste incinerator according to claim 2, an appropriate amount of waste according to the quality of the waste is supplied to the drying stoker by a dusting device arranged below the hopper chute every predetermined time, and the dust is dried by the drying stoker. While being burned, it is supplied to the combustion stoker every predetermined time, and while the dust is burned by this combustion stoker, it is supplied to the post-combustion stoker.

When the temperature T in the furnace housing the dust supply device, the dry stoker, and the combustion stoker becomes equal to or higher than the set temperature T ₁ , the dust supply device, the dry stoker, and the combustion stoker supply dust at predetermined time intervals. There is aborted once, when the temperature T of the furnace body before the resumption of the supply of discontinuation after the garbage has become high set temperature T ₂ or higher than the set temperature T ₁ is set to the temperature T of the furnace body temperature T ₂ The waste supply will be suspended until:

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a refuse incinerator of the present invention. In the figure, reference numeral 41 denotes a refuse incinerator.

This waste incinerator 41 is provided with a hopper 43 to which waste is supplied by a waste crane (not shown), a hopper chute 45 that guides the waste from the hopper 43, and a dust supply device that supplies the waste from the hopper chute 45 to a drying stoker 47. 49, a drying stoker 47 for drying the refuse, a combustion stoker 50 for burning the refuse from the drying stoker 47, and a post-combustion stoker 51 for burning the refuse from the burning stoker 50 and burning it.

The dust supply device 49, the drying stoker 47, the combustion stoker 50, and the post-combustion stoker 51 are housed in the furnace body 53.
An exhaust port 55 for exhausting combustion gas is formed in the.

Then, the dust supply device 49 is moved back and forth below the hopper chute 45 that guides the dust to dry it.
The pushing device 57 that pushes out to the side, the dust sensor 59 that is arranged at the upper part of the hopper chute 45 and reacts when there is no dust in this part, and the dust sensor 59 that has a certain volume of dust supplied to the hopper 43 by a dust crane (not shown). And the control unit 61 that takes in the garbage weight G of the fixed volume measured by the garbage crane as the data.

The control device 61 takes in the time T and the waste weight G, and based on these data, guides the waste weight F supplied to the drying stoker 47 per unit time, and the waste weight F per unit time is transferred to the drying stoker. The control device 61 controls the extrusion device 57 so as to approach the rated weight F ₀ , which is the waste disposal capacity of 47.

Further, the extrusion device 57 includes an upper extruder 65 whose front end moves forward by a predetermined stroke from the rear end 63 of the hopper chute 45.
And a lower extruder 67 whose front end moves from a predetermined position to the vicinity of the drying stoker 47.

The upper extruder 65 and the lower extruder 67 are alternately driven forward, and the upper extruder 65 and the lower extruder 67 move at substantially the same stroke L as shown in FIG.

The upper extruder 65 and the lower extruder 67 are connected to a cylinder 71 by a rod 69, and a pressure oil supply device (not shown) is connected to these cylinders 71. Then, by controlling the pressure oil supply device by the control 61, the stroke L of the upper extruder 65 and the lower extruder 67 is controlled.
Is controlled.

Further, as shown in FIGS. 3 and 4, the dry stoker 47 and the combustion stoker 50 have a large number of rostruls 73 connected in rows and connected in rows, and these rostruls 75 are alternately arranged in the front and rear direction. It is composed of two driving devices 76 to be moved.

These drive devices 76 include a cylinder 71, a rod 69 that is moved back and forth by the cylinder 71, a slider 77 fixed to the tip of the rod 69, and a pressure oil (not shown) that supplies pressure oil to the cylinder 71. It is composed of a supply device. This pressure oil supply device is connected to the control device 61.

That is, in the dry stoker 47 and the combustion stoker 50, as shown in FIG. 4, when the rod 69 is moved back and forth by the cylinder 71, the adjacent rostrut rows 75 are alternately moved back and forth, and the rostruls 73 are placed on the roostle 73. It is formed so as to send the refuse forward every predetermined time.

Post-burning stoker 51, dry stoker 47, burning stoker 5
Similar to 0, it is formed so that dust is sent forward by a not-shown roster at predetermined time intervals.

Further, as shown in FIG. 1, below the dust sensor 59, an auxiliary dust sensor 79 that reacts when there is no dust in that portion is arranged.

The dust sensor 59 and the auxiliary dust sensor 79 are configured, for example, by attaching a microwave irradiator and an incident device to the opposite positions of the hopper chute 45, and detect whether the microwave is blocked by dust. Is configured.

Then, a temperature sensor 81 is arranged at the discharge port 55 for discharging the combustion gas, and the temperature sensor 81 inputs the temperature in the furnace body 53 to the control device 61 by measuring the gas temperature of the combustion gas. are doing.

Further, the controller 61 controls the dust supply device 49 and the drying stoker 4 when the temperature T from the temperature sensor 81 becomes equal to or higher than the set temperature T _1.
7. Control the supply of waste by the combustion stoker 50 and the post-combustion stoker 51 to stop once at a predetermined time, and after the stop, before the resumption of the supply of waste, the temperature T in the furnace body 53 is lower than the set temperature T ₁ . When the temperature is higher than the set temperature T _{2 which} is higher than the set temperature T ₂ , the supply of dust is controlled until the temperature T in the furnace body 53 becomes the set temperature T ₂ or lower.

In the waste incinerator configured as described above, the waste is gripped by a waste crane (not shown), the weight of the waste is measured, and the waste is put into the hopper 43.

First, as a preliminary step, the dust in the hopper chute 45 is pushed forward as a preliminary step by moving the upper extruder 65 forward as shown in FIG. 6 from the state shown in FIG. , The front surface of the waste 85 shown by the alternate long and short dash line in FIG. 6 projects forward as shown by the solid line, and the waste 85 is discharged from the lower extruder 67.
Is sufficiently positioned closer to the drying stoker 47 side than the front end of the hopper chute, and thereafter, as shown in FIG. 7, the front end of the upper extruder 65 is retracted so as to be positioned at the rear end of the hopper chute 45.

Next, as shown in FIG. 7 and FIG.
67 is moved from a predetermined position to a portion whose tip is located in the vicinity of the drying stoker 47, and the dust 85 located closer to the drying stoker 47 than the tip of the lower extruder 67, that is, shown in FIG. The dust 85 in the shaded area on the dry stoker 47 side of the one-dot chain line, as shown in FIG.
Can be dropped on.

Thereafter, the lower extruder 67 is pulled to a predetermined position as shown in FIG. 5, and repeats the movements shown in FIGS. 5 to 8.

The dust 85 dropped on the dry stoker 47 is spread to a predetermined thickness on the dry stoker 47 and
The dust 85 is dried on the drying stoker 47 by the air from below and the combustion heat from the burning stoker 50, and is supplied to the burning stoker 50. It is burned by this combustion stoker 50 and supplied to the post-combustion stoker 51, and the dust 85 is completely burned.

On the other hand, time T during which the fixed volume of waste 85 supplied to the hopper 43 by the waste crane is reduced to the position of the waste sensor 59,
The data of the fixed volume waste weight G measured by the waste crane is taken into the controller 61, and the waste weight F per unit time supplied to the drying stoker 47 is derived. The dust weight F per unit time is expressed by F = G × 60 / T. Here, F (kg), G (kg), and T (second).

When the dust weight F per unit time is greater than the preset weight F ₀ of the dust 85, which is the preset processing capacity of the drying stoker 47, the controller 61 causes the upper extruder 65 and the lower extruder to be used. The stroke L of 67 is controlled to be short, and the dust weight F per unit time is the rated weight of the dry stoker 47.
When it is less than F ₀ , the controller 61 controls the upper extruder.
The strokes of 65 and the lower extruder 67 are controlled to be long. Here, the unit of the rated weight F ₀ is kg / h, and F ₀ is preset in the control device 61.

That is, when the quality of waste is poor, the specific gravity is large and the weight F of waste per unit time becomes larger than the rated weight F ₀ of the drying stoker 47. Therefore, in order to reduce the volume of waste pushed out by the lower extruder 67. , Upper extruder 65 and lower extruder 67
The stroke is controlled to be short, and it is thinly laid on the dry stoker 47.

Further, when the quality of the waste is good, the specific gravity is small and the weight F of the waste per unit time is smaller than the rated weight F ₀ of the dry stoker 47, so that the volume of the waste pushed out by the lower extruder 67 is increased. , The stroke L of the upper extruder 65 and the lower extruder 67 is controlled to be long, and the drying stoker is controlled.
47 is thickly laid. In the case of the upper extruder 65, the stroke L is based on the front end of the upper extruder 65 located at the rear end 63 of the hopper chute 45, and in the case of the lower extruder 67, the stroke L. L is a dry stoker 47
The front end of the lower extruder 67 located in the vicinity is used as a reference.

 Here, the control method will be described.

For example, if the rated weight F ₀ is 3000 kg / h, G is 900 kg, and T is 16 seconds, then F = 900 × 60/16 = 3375 kg, which is 375 kg more than the rated weight F ₀ . In this case, assuming that half of this difference is corrected, the current stroke length L is L ₁ = L + (F ₀
-F) / (2F ₀ ). Here, if L = 700 mm, then L ₁ = 656 mm.

Further, the dust 85 supplied to the drying stoker 47 by the dust supply device 49 that operates every predetermined time is supplied from the drying stoker 47 to the combustion stoker 50 at every predetermined time, and the combustion stoker 50 is supplied.
It is supplied to the post-combustion stoker 51 from 50 every predetermined time.

For example, the interval between the dust supply device 49 and the dry stoker 47 is 3 minutes, the combustion stoker 50 is 4 minutes, and the post-combustion stoker 51 is 8 minutes.

Then, as shown in FIG. 9, the control device 61, when the temperature T in the furnace body 53 accommodating the dust supply device 49, the drying stoker 47 and the combustion stoker 50 becomes equal to or higher than the set temperature T ₁ , , Dust collector 49, drying stoker 47 and combustion stoker 50,
The supply of garbage 85 by the post-burning stoker 51 every predetermined time is 1
If the temperature T in the furnace body 53 becomes equal to or higher than the set temperature T ₂ higher than the temperature T ₁ before restarting the supply of the waste 85 after the stop, the temperature T in the furnace body 53 is set to the set temperature. Trash until T ₂ or less
Control to stop the supply of 85.

Here, for example, the set temperature T ₁ is 900 ° C. and the set temperature T ₂ is 390 ° C.

The set temperatures T ₁ and T ₂ are empirical temperatures obtained by back-calculating from the temperature of the furnace body 53 which should not exceed 950 ° C.

That is, as shown in FIG. 10, for example, a dry stoker 47
For example, in the drying stoker 47 which has supplied the waste 85 every 3 minutes (A ₁ ), the temperature T from the temperature sensor 81 is equal to the time t ₁
When the temperature becomes higher than the set temperature T ₁ (900 ° C) at, the feed of waste 85 is stopped once (A ₂ ) as shown by the alternate long and short dash line in Fig. 10, and the supply of waste 85 is restarted (A ₃ ) Before, i.e.
When the temperature T in the furnace body 53 becomes T ₁ > T at the time L ₂ , the feeding of the waste 85 is restarted only by stopping once.

In this case, in the state shown by the solid line in FIG. 12, it is considered that the temperature T in the furnace body 53 tends to decrease from the time t _1, so the feeding of the dust 85 is stopped once, that is, for 6 minutes. The trash 85 feed will be stopped and the trash feed will be restarted.

Then, as shown in FIG. 11, the feed of the waste 85 is stopped once (A ₂ ), and after the stop, before the supply of the waste 85 is restarted (A ₃ ), at a time t ₃ , the temperature T in the furnace body 53 is reduced. Becomes T> T ₂ , T <T ₂
The feed of garbage 85 is stopped until.

In this case, in the state shown by the alternate long and short dash line in FIG.
The temperature T in 53 is considered to be rising, so
The feed of waste 85 will be stopped until the feed of 85 becomes T <T ₂ . For example, T <
When a T ₂ are, as shown in FIG. 11, to stop the feeding of 9 minutes garbage 85, will resume dust feed (A _4).

As shown in Fig. 10, the waste 85 feed is stopped once (A ₂ ), and after the stop, the waste 85 feed is restarted (A ₃ ).
If at t ₂ the temperature T in the furnace body 53 becomes T ₁ <T <T _2, stopped once the dust feed (A ₂₎ was only resumes dust feed (A _3). That is, before the resumption of the supply of the waste 85 after the discontinuation (A ₃ ), whether the temperature T in the furnace body 53 tends to increase or decrease, the discontinuation of the waste 85 is only once (A ₂ ). resume the feed (a _3).

Then, in this case, if the temperature T in the furnace body 53 tends to rise, T> T ₂ should be satisfied by the dust feed (A ₄ ), and the dust feed after (A ₄ ) T <it is discontinued until the T _2. Further, if the temperature T in the furnace body 53 tends to decrease, T ₁ > T should be satisfied by the waste feeding (A ₄ ).
(A ₄ ) The subsequent tendency of the temperature T to be released by the waste feed.

Then, in the refuse incinerator configured as above,
An extruding device 57 is arranged below the hopper chute 45, and a dust sensor 59 is arranged above the hopper chute 45. The time T and the dust weight G are taken in as data, and the dust weight F is pushed out so as to approach the rated weight F _0. Control device 61 for controlling device 57
And an upper extruder 65 whose front end moves forward a predetermined stroke L from the rear end 63 of the hopper chute 45.
And the lower extruder 67 whose front end moves substantially the same stroke L as the upper extruder 65 from the predetermined position to the vicinity of the drying stoker 47.
The weight F of the dust per unit time supplied to is introduced, and when this dust weight F is larger than the rated weight F ₀ , the controller 61 controls the strokes of the upper extruder 65 and the lower extruder 67 to be short. If the amount is small, the stroke is controlled for a long time.
Can be reliably supplied.

That is, when the quality of the waste is poor, the weight F of the waste per unit time becomes larger than the rated weight F ₀ of the drying stoker 47. Therefore, in order to reduce the volume of the waste extruded by the lower extruder 67, the upper extruder is used. The stroke of 65 and the lower extruder 67 is controlled to be short, and it is spread thinly on the drying stoker 47 to accelerate the drying of the waste 85, and the combustion stoker 50
Therefore, the combustion efficiency of the refuse incinerator 41 can be improved.

When the quality of the waste is good, the weight F of the waste per unit time becomes smaller than the rated weight F ₀ of the drying stoker 47, and therefore the upper extruder 67 is increased to increase the volume of the waste to be extruded by the lower extruder 67. The stroke of 65 and the lower extruder 67 is controlled to be long, and it is spread thickly on the dry stoker 47, suppresses combustion in the dry stoker 47, promotes combustion in the combustion stoker 50, and generates unburned materials. Can be suppressed.

Furthermore, below the dust sensor 59, the auxiliary dust sensor 79 that reacts when the dust 85 in that portion runs out is placed, so the dust 85 is clogged in the portion where the dust sensor 59 is placed, and the dust 85 below it is When supplied and hollowed out in the vicinity of the auxiliary dust sensor 79, this state is confirmed by the auxiliary dust sensor 79, and the signal of the auxiliary dust sensor 79, for example, gives vibration to the hopper chute 45 to promote the fall of the dust 85. Can be driven and the safety of the refuse incinerator can be secured.

In the waste incinerator configured as described above, the dust supply device 49 that supplies an appropriate amount of waste 85 according to the quality of the waste, and the waste
Drying stoker 47 that supplies 85 while drying, combustion stoker 50 that supplies garbage 85 while burning, temperature sensor 81 arranged in furnace body 53, dust supply device 49, drying stoker 47,
Since it is composed of the combustion stoker 50 and the control device 61 that controls the supply of the dust 85 by the combustion stoker 51 at predetermined time intervals, the hopper chute 45 can generate an appropriate amount of dust 85 according to the waste quality.
Is supplied to the drying stoker 47 at a predetermined time by the dust supply device 49 arranged below, and the waste 85 is dried while being supplied to the combustion stoker 50 at a predetermined time. While being combusted, 85 is supplied to the post-combustion stoker 51.

And dust collector 49, drying stoker 47, combustion stoker 50
And the temperature T in the furnace body 53 that houses the post-combustion stoker 51
However, when the temperature exceeds the set temperature T ₁ , the dust supply device 49, the drying stoker 47, the combustion stoker 50 and the post-combustion stoker 51.
The supply of the waste 85 at every predetermined time is stopped once, and after the stop, the temperature T in the furnace body 53 is set to the set temperature before restarting the supply of the waste 85.
When the set temperature T ₂ is higher than T ₁ , the furnace body 53
The supply of dust 85 is stopped until the internal temperature T becomes equal to or lower than the set temperature T ₂ , and by controlling the thickness of the dust 85 and the feed rate of the dust 85, the dust 85 can be burned normally and the furnace The temperature T in the body 53 can be controlled reliably and quickly.

That is, the dust supply device 49 allows the appropriate amount of dust according to the quality of the dust.
85 can be supplied to the dry stoker 47 and the like, and the waste on the dry stoker 47 and the combustion stoker 50 can be made to have an appropriate waste thickness according to the waste quality, and the waste 85 can be burned normally.

Further, in order to control the feed rate of the dust 85 on the dust supply device 49, the drying stoker 47, and the combustion stoker 50, the temperature T inside the furnace body 53 is controlled.
Can be controlled reliably and quickly.

Further, the above-described method for controlling the waste feed rate of the waste incinerator uses the dust supply device 49, the drying stoker 47, and the combustion stoker 50 when the temperature T in the furnace body 53 becomes equal to or higher than the set temperature T _1. Discontinue the supply of garbage 85 once every predetermined time,
If the temperature T of the furnace body 53 before resumption of supply after discontinuation dust 85 becomes higher set temperature T ₂ higher than the set temperature T ₁ of the temperature T of the furnace body 53 is set temperature T ₂ less It is performed by stopping the supply of the waste 85 until it becomes, so by controlling the thickness of the waste 85 and the feed speed of the waste 85, the waste 85
Can be burned normally, and the temperature T in the furnace body 53 can be controlled reliably and quickly.

In addition, after the interruption of the supply of refuse 85,
Since the control method differs depending on whether or not the temperature inside 53 tends to rise, reliable temperature control can be performed with minimum control.

In the above embodiment, the temperature sensor is provided at the discharge port 55 of the furnace body 53.
Although the example in which 81 is arranged has been described, the present invention is not limited to the above-described embodiment, and the temperature sensor may be arranged anywhere as long as the temperature inside the furnace can be measured.

Further, in the above embodiment, the control device 61 controls the dust supply device 49.
By changing the stroke of the upper extruder 65 and the lower extruder 67, according to the quality of the waste, an example was described in which an appropriate amount of waste 85 was reliably supplied to the drying stoker 47, but the present invention has been described above. The dust supply device is not limited to the above, as long as it can supply an appropriate amount of waste to the dry stoker according to the quality of the waste, and a dust supply device with another configuration is applied to the waste incinerator of the present invention. Of course, it is okay.

Further, in the above-described embodiment, the dry stoker 47, the combustion stoker 50, the example of supplying the waste 85 by the rostrut row 75 composed of a large number of alternately moving rostruts 73, but the present invention is limited to the above embodiments. Not what is done,
With regard to the dry stoker and the combustion stoker, as long as dust can be supplied at predetermined time intervals, it is possible to obtain substantially the same effect as that of the above-described embodiment regardless of the structure.

〔The invention's effect〕

As described above, according to the method of controlling the refuse feed rate of the refuse incinerator according to claim 1, an appropriate amount of refuse according to the quality of the waste is generated.
It is supplied to the dry stoker every predetermined time by the dust supply device arranged below the hopper chute, and while the waste is dried by this dry stoker, it is supplied to the combustion stoker every predetermined time, while the dust is burned by this combustion stoker. Supplied to a post-combustion stoker.

When the temperature T in the furnace housing the dust supply device, the dry stoker, and the combustion stoker becomes equal to or higher than the set temperature T ₁ , the dust supply device, the dry stoker, and the combustion stoker supply dust at predetermined time intervals. There is aborted once, when the temperature T of the furnace body before the resumption of the supply of discontinuation after the garbage has become high set temperature T ₂ or higher than the set temperature T ₁ is set to the temperature T of the furnace body temperature T ₂ The waste supply will be stopped until
By controlling the thickness of the dust and the feed rate of the dust, the dust can be burned normally and the temperature inside the furnace can be controlled reliably and quickly.

In the waste incinerator according to claim 2, a dust supply device that supplies an appropriate amount of waste according to the quality of the waste, a drying stoker that supplies the dust from this dust supply device while drying, and a waste from this drying stoker. Combustion stoker that supplies while burning, temperature sensor placed in the furnace body, and a control device that controls the dust supply device, the drying stoker, and the control of the supply of dust by the combustion stoker at predetermined time intervals. An appropriate amount of waste is supplied to the drying stoker at a predetermined time by a dust supply device disposed below the hopper chute, and the waste is dried at the drying stoker while being supplied to the combustion stoker at a predetermined time. Waste is burned by the combustion stoker and supplied to the post-combustion stoker.

When the temperature T in the furnace housing the dust supply device, the dry stoker, and the combustion stoker becomes equal to or higher than the set temperature T ₁ , the dust supply device, the dry stoker, and the combustion stoker supply dust at predetermined time intervals. There is aborted once, when the temperature T of the furnace body before the resumption of the supply of discontinuation after the garbage has become high set temperature T ₂ or higher than the set temperature T ₁ is set to the temperature T of the furnace body temperature T ₂ The waste supply will be stopped until
By controlling the thickness of the dust and the feed rate of the dust, the dust can be burned normally and the temperature inside the furnace can be controlled reliably and quickly.

[Brief description of drawings]

1 is a vertical cross-sectional view showing a refuse incinerator of the present invention. FIG. 2 is an explanatory view showing the extruder shown in FIG. 1 and its vicinity. FIG. 3 is a perspective view showing the dry stoker or the combustion stoker shown in FIG. FIG. 4 is a side view of FIG. 5 to 8 are explanatory views showing a state in which dust is pushed out. FIG. 9 is a flowchart showing a method of controlling the dust supply device, the drying stoker, and the combustion stoker by the control device. FIG. 10 is an explanatory view showing a state in which the waste feeding by the dry stoker is once stopped. FIG. 11 is an explanatory view showing a state in which the waste feed by the dry stoker is stopped twice. FIG. 12 is an explanatory diagram showing a state where the temperature inside the furnace body is higher than the set temperature T ₁ and lower than T ₂ and a state where the temperature is higher than the set temperature T ₂ . [Explanation of symbols of main parts] 41 …… Waste incinerator 45 …… Hopper chute 47 …… Drying stoker 49 …… Dust feeder 50 …… Combustion stoker 53 …… Furnace body 61 …… Control device 81 …… Temperature Sensor 85 …… Garbage.

Claims (2)

[Claims] 1. A dust supply device disposed below a hopper chute supplies an appropriate amount of waste according to the quality of the waste to a drying stoker every predetermined time, and while the waste is drying the waste stoker, a predetermined amount is provided to the combustion stoker. In a method of controlling a refuse feed rate of a refuse incinerator, which is supplied every hour and supplies the post-combustion stoker while burning the combustor with the combustion stoker, a temperature T in a furnace housing the dust supply device, the dry stoker and the combustion stoker However, when the temperature becomes equal to or higher than the set temperature T ₁ , the dust supply device, the drying stoker, and the combustion stoker stop supplying the dust once at a predetermined time, and after the discontinuation, the dust supply is restarted before the restart of the waste supply. of if the temperature T becomes higher set temperature T ₂ higher than the set temperatures T ₁ sends garbage incinerator to stop the supply of the waste to a temperature T of the furnace body is below the set temperature T ₂ Speed Control method. 2. A dust supply device arranged below the hopper chute for supplying an appropriate amount of dust according to the quality of the dust, a drying stoker for supplying dust from this dusting device while drying, and a drying stoker from this drying stoker. A combustion stoker that supplies waste while burning it, a temperature sensor arranged in the furnace body that houses the dust supply device, the drying stoker, and the combustion stoker, and the temperature T in the furnace body becomes equal to or higher than a set temperature T _1. In addition, the dust supply device, the drying stoker, and the combustion stoker are controlled so as to stop the supply of dust once every predetermined time, and after the stop, the temperature T in the furnace body is set to the set temperature T ₁ before restarting the supply of dust. And a control device that controls to stop the supply of dust until the temperature T in the furnace body becomes equal to or lower than the set temperature T ₂ when the set temperature T ₂ is higher than the set temperature T ₂ or higher. Garbage incineration .