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Tenova Goodfellow Commissions EFSOP Process Control System on TenarisDalmine EAF

09/03/2008 - Tenova Goodfellow installs its EFSOP process control system on TenarisDalmine’s 100-tonne Electric Arc Furnace in Italy.

Tenova Goodfellow recently installed its EFSOP® process control system on TenarisDalmine’s 100-tonne Electric Arc Furnace in Italy. Process analysis of the furnace operation commenced immediately after installation and commissioning of the system. 
 
The closed-loop EFSOP process control system is based on the real-time measurement of furnace off-gas at the fourth hole, before dilution with combustion air. At Dalmine, the system dynamically controls the injection of methane, oxygen and carbon powder through six KT lances and three conventional burners. Based on the analysis of the furnace’s off-gas, the system also modulates the draft of the fume system. The dynamic control helps to maximize energy efficiency throughout the entire melting and refining process.
 
According to Tenova, TenarisDalmine’s expectations have been met through demonstrated savings in electrical energy consumption (9.58 kWh/tonne of liquid steel) and a reduction in methane usage (1.63 Nm3/ tonne of liquid steel). Oxygen injection was increased only slightly (0.21 Nm3a/ tonne of liquid steel).
 
Tenova said the project success was achieved through the combined efforts of the staff at TenarisDalmine and Tenova Goodfellow engineers, who worked closely to understand and harmonize the process and the plant equipment.
 
Tenova Goodfellow Inc., a Canadian company based in Mississauga, Ont., Canada, is an integrated member of Tenova. The company’s goal is to deliver the highest quality, most technologically advanced industrial process control technology for the markets that it serves. Tenova operates close to its customers through a network of 30 companies based on the 5 continents.