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HIsarna: unravelling the process - Coggle Diagram
HIsarna: unravelling the process
Introduction
Need of HIsarna
Capability of HIsarna
CO2 issue/climate agreement
Increase the circularity, (refer-Reclamet, LOCO2Fe(50% Scrap))
Brief History
Scale up, plan? (Check with Keon, if we can say anything)
Timeline (Table) (use reference)
Run year, name
Run Production/total, run aim
Fuel rate/reductant rate
HIsarna process overview
Advantages
no sinter/no coke
Flexibility for new raw materials
capability
Oxygen injection/CO2 purity/capture opportunity
Advantages over peers and blast furnace
How is our emission level compare to BF and alternate Iron making technologies? SOx NOx, Particle? Table?
In HIsarna emission is at single location, compare to the peers where we have sinter, pellet, coke and SR vessel for emission. GAs treatment can be performed at the single location.
SRV/Cyclone (prereduction in liquid state, add to the process efficiency)
Need of a process descriptive model
HIsarna is a new Smelting reduction process
Need optimization
Process understanding required /expected behaviour after scale up
Need of a "detailed process understanding" to predict the process behaviour (in cyclone and SRV)
HIsarna process descriptive model
General explanation, 7 zones/Figure
Main process
Para:Explain in detail (zone 1, 2 & 3)
Principal reactions in zone 1, 2 & 3
Para: Explain the assumption of steady state
Para: Example of minimum coal requirement, steady state condition
Secondary process
Para:Importance of C-volatile
Para:Lance angle and Char/
CHAR: Non wetting with slag (reference) and foam breaker (ref)
Para: Effect of droplets/surface area
Metal splash (de-carburisation and oxidation, balance)
Explanation of box 4, 5, 6
Modelling box 4 using IRMA
Explain the background of the IRMA simulation
Input for box 4 (CO gas from 3 and C(char and vol) from box 5)
IRMA Mixer model(figure) redraw indicative flowsheet
Explain the flow-sheet (with methodology and assumption)
Explain the output and significance
: Done: Raw material and product flow (Diagram and explanation)
Method
Para: IRMA
What is IRMA explain
IRMA papers can be referred
How it is used in the current paper
Para: Run
Data selection method
For validation
Para:CFD
Explanation, how CFD is used in the present study
CFD calculation are slow
Conclusion
Brief recap
List of take away points
Conclusion and recommendations: include in conclusion: What need to be done in the future, areas of further development
behaviour of flux and impact on the process
Relating the model with the process data
1 Steady state run F3.2
Process stability
Steady state (data from F3.2)
Lance angle/height
Delta T (Slag-HM)
4.2 SRV gas analyses and mixer model box 4
Char
Optimal box 4 parameters
General explanation
Steady state (balance between FeO/F[C]
2.Optimal energy
Skull formation
Gas burned (heatloss)