CFD of Furnace Blowpipe

 

 

 

 

 

 

Computational Fluid Dynamics (CFD) analysis was used to investigate a blast furnace blowpipe failure, which was part of a forensic investigation to determine the cause of the blowpipe breakout. The investigation included quantifying the failure mode, evaluating the effects of using other designs and/or alternative materials of construction.

The investigation included the blowpipe, lance and tuyere, including the materials of construction, the system design, operating data and alarm logs, an examination of the furnace, the failed blowpipe and lance, and exemplar blowpipes and lances, and three-dimensional finite element thermal transient engineering analyses.

Computational Fluid Dynamics (CFD) is used to simulate and analyze fluid flow systems – it was used to model the hot blast flow in the blowpipe with the coal/nitrogen injection stream. Two cases were analyzed: normal operating flow, and upset conditions with the lance broken off at the inner refractory edge.

 


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