JP2001082719A5

JP2001082719A5 -

Info

Publication number: JP2001082719A5
Application number: JP1999262571A
Authority: JP
Filing date: 1999-09-16
Publication date: 2004-12-24
Anticipated expiration: 2019-09-16

Claims

In the combustion control method of the waste incineration plant,
Reading various process values, including steam volume process values, from various sensors in a waste incineration plant;
Calculating a difference between the read steam amount process value and a preset steam amount setting value, and determining a set value of the combustion air amount so that the difference becomes zero;
Determining whether a disturbance has occurred;
When a disturbance occurs, using a neuro model built in advance, calculating a predicted value after a predetermined time of the generated steam amount; and
Based on the difference between the predicted steam volume value and the steam volume setting value and the various process values that have been read, the combustion air volume setting value is corrected so that the difference between the predicted steam volume value and the steam volume setting value is minimized. Calculating a correction value for
Correcting the amount of combustion air with a correction value;
A step of supplying a corrected amount of combustion air.

The combustion control method according to claim 1,
The waste incineration plant is of the stoker type, and the amount of combustion air is the amount of main combustion air supplied to the combustion 1 zone and the combustion 2 zone,
The combustion control method further includes determining the amount of air to the drying zone and the post-combustion zone based on the process value of the combustion completion point in the incinerator, and the amount of air to the main combustion air and the drying zone and the post-combustion zone. And a step of calculating a secondary combustion air amount that is an air amount to the incinerator outlet based on a set value of the primary combustion air amount that is the sum of the above and the combustion control method.

The combustion control method according to claim 1 or 2, further comprising:
A combustion control method comprising a step of updating a neuro model by learning using various read process values.

In the combustion control method of the waste incineration plant,
Reading various process values from various sensors in a waste incineration plant;
A step of calculating a correction amount of the driving speed of the dust feeder to be adjusted according to fluctuations in dust properties based on the various process values read;
And a step of changing the driving speed of the dust feeder by the calculated correction amount at the time of putting garbage into the hopper.

The combustion control method according to claim 4, wherein the waste incineration plant is a stoker type, and the method further comprises:
A step of calculating a correction amount of the driving speed of the stalker to be adjusted according to a change in the garbage property;
And a step of changing the driving speed of the stalker by the calculated correction amount at the time when the garbage is put into the hopper.

6. The combustion control method according to claim 5, further comprising:
Calculating a correction amount for each of the driving speeds of the dust feeder and the stalker to be adjusted according to the amount of generated steam, and changing each driving speed by a correction amount obtained at that time in a predetermined cycle; and
Calculating a correction amount for each of the driving speeds of the dust feeder and the stalker to be adjusted according to the layer thickness of the dust, and changing each driving speed by a correction amount obtained at that time in a predetermined cycle; and
When the oxygen concentration in the incinerator is out of the specified range, the correction amount of each of the driving speeds of the dust feeder and the stalker to be adjusted is calculated, and at that time, the respective correction speeds obtained are the respective driving speeds. A step of changing
When the amount of main combustion air is out of the specified range, calculate the correction amount of the driving speed of the dust feeder and stalker to be adjusted, and change the driving speed by the obtained correction amount at that time Step to
When the combustion completion point is out of the predetermined range, the correction amount for each of the driving speeds of the feeder and stalker to be adjusted is calculated, and at that time, the respective driving speeds are changed by the obtained correction amount. A combustion control method comprising: steps.

In a waste incineration plant equipped with a dust feeder for extruding garbage from a hopper to an incinerator and a combustion furnace for burning the garbage,
The step of reading various process values including the steam amount process value from various sensors in the combustion plant is calculated, and the difference between the read steam amount process value and a preset steam amount set value is calculated. When determining that the disturbance has occurred, a step of determining the set value of the combustion air amount so as to be zero, a step of determining whether or not a disturbance has occurred, Based on the step of calculating the predicted value of the generated steam volume after a predetermined time, the difference between the steam volume predicted value and the steam volume setting value, and various read process values, the steam volume predicted value and the steam volume setting A correction value for correcting the combustion air amount setting value, a step of correcting the combustion air amount by the correction value, and a corrected combustion air amount are supplied so that the difference from the value is minimized. Combustion plants dust, characterized in that it comprises a combustion control device for executing the steps of.

In the combustion plant,
The waste incineration plant is of the stoker type, and the amount of combustion air is the amount of main combustion air supplied to the combustion 1 zone and the combustion 2 zone,
The combustion control device further determines the amount of air to the dry zone and the post-combustion zone based on the process value of the combustion completion point in the incinerator, and the main combustion air amount and the air amount to the dry zone and the post-combustion zone And the step of calculating the amount of secondary combustion air that is the amount of air to the incinerator outlet based on a set value of the amount of primary combustion air that is the sum of plant.

The combustion controller according to claim 7 or 8, wherein the combustion control device is further configured to perform a step of updating the neuro model by learning using various read process values. Characteristic garbage burning plant.

In a waste incineration plant equipped with a dust feeder for extruding garbage from a hopper to an incinerator and a combustion furnace for burning the garbage,
The step of reading various process values from various sensors in the combustion plant and the correction amount of the drive speed of the dust feeder to be adjusted according to the fluctuation of the garbage properties based on the various process values read Combustion control device for executing a step of calculating and a step of changing the driving speed of the feeder by the calculated correction amount at the time when the waste is put into the hopper is provided. .

11. The waste incineration plant according to claim 10, wherein the waste incineration plant is of a stoker type, and the combustion control device further calculates a correction amount of the driving speed of the stoker to be adjusted according to fluctuations in dust properties. And a step of changing the driving speed of the stalker by the calculated correction amount at the time when the waste is put into the hopper.

In the combustion plant for refuse according to claim 11, the combustion control device further calculates a correction amount for each of the driving speeds of the dust feeder and the stalker to be adjusted according to the amount of generated steam, and at a predetermined cycle at that time. A step of changing each driving speed with the obtained correction amount, and a correction amount for each of the driving speed of the duster and the stalker to be adjusted according to the thickness of the dust, are calculated at a predetermined cycle at that time. The step of changing each driving speed with the obtained correction amount, and when the oxygen concentration in the incinerator is out of the predetermined range, the correction amount for the driving speed of the duster and the stoker to be adjusted is calculated. And, at that time, the step of changing the respective driving speeds by the obtained correction amount, and the driving speeds of the dust feeder and the stoker to be adjusted when the main combustion air amount is out of the predetermined range. A step of calculating each correction amount and changing each drive speed by the obtained correction amount at that time, and a dust feeder to be adjusted when it falls outside a predetermined range of the combustion completion point, and A waste-burning plant characterized in that a correction amount for each of the drive speeds of the stalker is calculated, and at that time, the step of changing the respective drive speeds with the obtained correction amount is executed.