Development of a Simplified Ensemble Model for PCI Coal Selection
(Room 404)
16 May 16
9:30 AM
-
10:00 AM
Tracks:
BF Modeling, Blast Furnace Operating Improvements
Although pulverized coal injection (PCI) increases operational complexity, its use has become widely adopted where it offers a financial benefit. Because there is no single standard specifying coal requirements for pulverized coal, each operation needs to determine its own selection criteria. One key parameter for PCI coal selection is the coke replacement ratio. Ideally the coke replacement ratio should be determined via industrial trials. However, there are issues with such industrial trials, namely the length of the trials required to achieve statistical significance and also the cost. One strategy to avoid the impact of industrial trials is to evaluate the coke replacement ratio by modeling. This paper reviews some of the known published models for calculating coke replacement ratio and details the development within AK Steel of a simplified ensemble model for calculating the coke replacement ratio for PCI coal.