Numerical Investigation of Burden Distribution in Hydrogen Blast Furnace

Abstract Hydrogen injection is a promising technology currently under development to reduce CO 2 emissions in ironmaking blast furnaces (BFs). Therefore, hydrogen BF studied by recent process model based on computational fluid dynamics (CFD). It focuses the effect of peripheral opening extent (POE), which represents coke amount near furnace wall. The simulations consider 380 m 3 operated with through both shaft and hearth tuyeres. overall performance analyzed terms inner states. shows that increasing POE hinders pre-reduction pre-heating roles shaft-injected (SIH) but improves indirect reduction rate. An optimum can be identified achieve maximum hot metal (HM) temperature, relatively low bed pressure, good gas utilization. interaction between SIH flow rate burden distribution also quantified. increase slows down enhances H These opposite trends account for less variation HM temperature as increases. This becomes trivial at large rates small POEs. Overall, affects cohesive zones more than However, conditions considered, variables cannot significantly improve penetration injection, generally confined within region.