Title:
CONTROL DEVICE FOR WET FLUE-GAS DESULFURIZATION APPARATUS, REMOTE MONITORING SYSTEM, CONTROL METHOD FOR REMOTE MONITORING SYSTEM, AND CONTROL METHOD FOR WET FLUE-GAS DESULFURIZATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/234103
Kind Code:
A1
Abstract:
The present application relates to a control device for a wet flue-gas desulfurization apparatus that performs desulfurization by bringing exhaust gas generated by a combustion apparatus and absorbent liquid in an absorption tower into gas-liquid contact. The control device comprises a trained model construction unit, a prediction value correction unit, a table creation unit, and a control target value determination unit. The trained model construction unit constructs a trained model by machine learning with respect to a relationship between an explanatory variable including at least the load of the combustion apparatus, and an objective variable that is a future concentration of sulfur dioxide at the outlet of the absorption tower. The prediction value correction unit corrects the prediction value produced by the trained model by using a correction coefficient calculated on the basis of a difference from a measured value. The table creation unit creates a table indicating a relationship between the load of the combustion apparatus and an absorbent concentration target value and absorbent circulation amount target value of the absorbent liquid for which the prediction value corrected by the prediction value correction unit satisfies a reference value. The control target value determination unit calculates the absorbent concentration target value on the basis of the table, and determines control target values for the input amount of the absorbent and the circulation flow rate of the absorbent liquid corresponding to the absorbent concentration target value and the absorbent circulation amount target value. The prediction value correction unit comprises a first correction unit that corrects the prediction value by using, as the correction coefficient, a first correction coefficient calculated on the basis of the load.
Inventors:
GUNJI SHUN (JP)
KANEMORI SHINYA (JP)
SUDO JIN (JP)
SAITO TAKEHIRO (JP)
TACHIBANA MISAKI (JP)
KANEMORI SHINYA (JP)
SUDO JIN (JP)
SAITO TAKEHIRO (JP)
TACHIBANA MISAKI (JP)
Application Number:
PCT/JP2023/018968
Publication Date:
December 07, 2023
Filing Date:
May 22, 2023
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI POWER LTD (JP)
MITSUBISHI POWER LTD (JP)
International Classes:
B01D53/14; B01D53/50; B01D53/78; F23J15/00; F23N5/00; G06N20/00
Domestic Patent References:
| WO2022210827A1 | 2022-10-06 |
Foreign References:
| JP2020011163A | 2020-01-23 | |||
| CN111340199A | 2020-06-26 | |||
| CN113941233A | 2022-01-18 | |||
| JPH03267115A | 1991-11-28 | |||
| JPH08257349A | 1996-10-08 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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