Title

TUYERE PHENOMENA DETECTION SYSTEM

TUYERE PHENOMENA DETECTION SYSTEM

Authorship

Simoes, Jean-Paul; Goedert, Paul; Reuter, Yves; Dorpe, Pierre Van

Simoes, Jean-Paul

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Goedert, Paul

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Reuter, Yves

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Dorpe, Pierre Van

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DOI

10.5151/2594-357X-22696

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Abstract

This paper highlights the latest Paul Wurth developments in tuyeres monitoring and phenomena detection system combined with a process model for the raceway. The Tuyere Phenomena Detection System consists of a camera mounted on the elbow of a tuyere stock permanently visualising the tuyere tip area, the injection lance(s), the injectants (fuels or/and residual materials) and the raceway. The visualisation is done on dedicated screens in the control room and optionally on the cast floor as well as through the intranet wherever convenient for engineers and blast furnace managers. The Tuyere Phenomena Detection System automatically detects the regions of interest and automatically detects phenomena related to the injection lances and the tuyeres. The system recognises phenomena (tuyere blockage, tuyere displacement, lance position and lance back-burning as well as injection status and ignition status of coaxial lances) at an early stage enabling preventive and/or corrective actions. Thus, major damages around the injection level are minimised and unplanned shutdown time of the blast furnace is reduced. This increases the availability and thus the potential production capacity of the blast furnace. Major safety issues on tuyere platforms are minimised. The integrated Raceway Model provides key process figures individually for each tuyere. The Tuyere Phenomena Detection System is supplied as a stand-alone system or integrated into BFXpertTM.

This paper highlights the latest Paul Wurth developments in tuyeres monitoring and phenomena detection system combined with a process model for the raceway. The Tuyere Phenomena Detection System consists of a camera mounted on the elbow of a tuyere stock permanently visualising the tuyere tip area, the injection lance(s), the injectants (fuels or/and residual materials) and the raceway. The visualisation is done on dedicated screens in the control room and optionally on the cast floor as well as through the intranet wherever convenient for engineers and blast furnace managers. The Tuyere Phenomena Detection System automatically detects the regions of interest and automatically detects phenomena related to the injection lances and the tuyeres. The system recognises phenomena (tuyere blockage, tuyere displacement, lance position and lance back-burning as well as injection status and ignition status of coaxial lances) at an early stage enabling preventive and/or corrective actions. Thus, major damages around the injection level are minimised and unplanned shutdown time of the blast furnace is reduced. This increases the availability and thus the potential production capacity of the blast furnace. Major safety issues on tuyere platforms are minimised. The integrated Raceway Model provides key process figures individually for each tuyere. The Tuyere Phenomena Detection System is supplied as a stand-alone system or integrated into BFXpertTM.

Keywords

Blast furnace; Tuyeres; Injection; Raceway.

Blast furnace; Tuyeres; Injection; Raceway.