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US 12,320,590 B2Granted
Blast furnace fault determination apparatus, method for determining fault in blast furnace, and method for operating blast furnace
AssigneeJfe Steel Corporation
InventorsHiroyuki Shimamoto, Tomohiko Ito, Tatsuya Yamaguchi, Nozomu Nishimura
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Abstract
A blast furnace fault determination apparatus includes a processor configured to: calculate a fault index indicative of a degree of fault in a blast furnace; calculate a ventilation index of the blast furnace; and determine a fault condition in the blast furnace using the fault index and the ventilation index.
Claims6
A blast furnace fault determination apparatus comprising
- a processor configured to:
- calculate a fault index indicative of a degree of fault in a blast furnace, wherein the fault index is a Q statistic based on principal component analysis;
- calculate a ventilation index of the blast furnace;
- and
- determine a fault condition in the blast furnace using the fault index and the ventilation index;
- and
- a sensor fault identification unit configured to evaluate a degree of attribution on the Q statistic and identify a faulty sensor based on the degree of attribution in a case where the ventilation index does not exceed a predetermined threshold and the Q statistic exceeds a predetermined threshold.
4 more elements
A method for determining a fault in a blast furnace, the method comprising:
- calculating a fault index indicative of a degree of fault in the blast furnace, wherein the fault index is a Q statistic based on principal component analysis;
- calculating a ventilation index of the blast furnace;
- determining a fault condition in the blast furnace using the fault index and the ventilation index;
- and
- evaluating a degree of attribution on the Q statistic and identifying a faulty sensor based on the degree of attribution in a case where the ventilation index does not exceed a predetermined threshold and the Q statistic exceeds a predetermined threshold.
2 more elements
Dependencies are inferred from the claim text.