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Title:
STATE ESTIMATION METHOD FOR VACUUM DEGASIFICATION PROCESS, OPERATION METHOD, MOLTEN STEEL MANUFACTURING METHOD, AND STATE ESTIMATION DEVICE FOR VACUUM DEGASIFICATION PROCESS
Document Type and Number:
WIPO Patent Application WO/2023/218915
Kind Code:
A1
Abstract:
Provided is, for example, a state estimation method for a vacuum degasification process with which it is possible to perform highly accurate state estimation during a vacuum degasification process. The state estimation method for a vacuum degasification process comprises: input steps (S1, S2) in which input information is input, the input information comprising past operational records concerning amounts of operation during processing of the vacuum degasification process, and chronological exhaust gas measurement values including the flow volume of exhaust gas discharged from a vacuum degasification facility performing the vacuum degasification process, and component concentrations of CO gas, CO2 gas, and O2 gas contained in the exhaust gas; and a computation step (S3) for, on the basis of the input information, classifying the gases constituting the exhaust gas into a plurality of origins including oxygen that was blown-in and air that entered a vacuumized region of the vacuum degasification facility prior to the start of, or during, the vacuum degasification process, and estimating the constituent ratios of the plurality of classified origins.

Inventors:
OHIGASHI YUTA (JP)
Application Number:
PCT/JP2023/016018
Publication Date:
November 16, 2023
Filing Date:
April 21, 2023
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C21C7/00; C21C7/10
Domestic Patent References:
WO2019181562A12019-09-26
Foreign References:
JPH08260030A1996-10-08
JP2013112835A2013-06-10
JPH03134114A1991-06-07
JP2001140012A2001-05-22
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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