Installation of a Brown Field Slag Reduction Furnace: State …
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Fig. 5 Influence of particle recycle rate on the sorption efficiency
with mixtures of products of different plants currently in operation have been carried
out prior to the design of this filtration plant. The results obtained in the test could
be confirmed during the operation of the industrial plant.
Kuettner Thermodynamic Process Model
The furnace process in the SBF and the off-gas treatment are closely linked. During
the first start-up of the SBF furnace, it became apparent that for safe and effective hot
commissioning of the off-gas treatment, Kuettner had to get involved in the start-up
of the furnace process itself. The start-up of the furnace became a success when all
parties involved were working closely together.
Quite early in the process, the need for an own detailed thermodynamic furnace
model was identified, which was developed completely in-house by Kuettner. This
model was refined by actual data from commissioning and start-up. As a foundation,
thermodynamic software AsTher was used for the thermal and chemical equilibrium
calculations.
In the Kuettner process model, the furnace is divided into different linked zones:
• Bath zone
• Upper furnace
• Post-combustion
• Boiler/Quench.
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