Improved efficiency of blast furnace - Optimizing PCI applications with mass flow measurement - Case Study
Courtesy of ENVEA
Application
The PCI technology (Pulverized Coal Injection), was designed to dose and control the amount of coal injected into blast furnaces, via the hot blast tuyeres. Modern PCI plant designs use dens phase conveying systems to transport pulverized coal from the storage area to the blast furnace, reducing nitrogen consumption, abrasion and stabilizing coal flow. With optimal coal injection, the last furnace’s burn efficiency is also improved, avoiding downtime and stabilizing iron ore transformation into pig iron. Maintaining burn urn homogeneity is key for stable production.
The best way to control coal injection is by directly measuring the coal mass flow in two potential places, after the pulverized coal storage silos, at the PCI, and on the coal injection lances, underneath the blast furnace. In both points dens phase conveying might be found.
Process Data
- Customer: Steel Plant
- Material: Pulverized coal
- Mass flow range: approx. 7 %
- Installation: Coal injection lances
- Function: Control amount of coal injected into blast furnaces
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