Title

CHR® - CLEAN HEAT RECOVERING FROM EAF HOT FUMES INTO ELECTRIC ENERGY, WITH CONSEQUENT FUEL SAVING AND REDUCTION OF GREEN-HOUSE GAS EMISSION

CHR® - CLEAN HEAT RECOVERING FROM EAF HOT FUMES INTO ELECTRIC ENERGY, WITH CONSEQUENT FUEL SAVING AND REDUCTION OF GREEN-HOUSE GAS EMISSION

Authorship

Santangelo, Nicola; Tomadin, Luciano; Arrigo, Bertolissio

Santangelo, Nicola

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Tomadin, Luciano

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Arrigo, Bertolissio

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DOI

10.5151/2594-5300-22791

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Abstract

The paper shall present the way to recover the energy transferred by the fumes , approximately 20%-30% of the total energy input is lost with the primary fumes sucked from the EAF, to the cooling media by using a closed cycle working with an organic fluid (ORC) and produce Clean Electric Energy. The Organic Rankine Cycle (ORC) is a technology based on the exploitation of waste heat using a closed cycle working with an organic fluid. Using HWHP (Hot Water High Pressure) and a non- flammable fluid at medium pressure the design is simple and efficient. The advantages of this technology, compared to steam turbines, are based on: simple completely automatic machine, no O&M costs, choice of the right fluid to get the best heat recovery and conversion efficiency, no influence on the steel-making process, direct coupling with generator and grid, available for frequent start&stop cycles, good off-design performances, reduced delivery due to standard design.

The paper shall present the way to recover the energy transferred by the fumes , approximately 20%-30% of the total energy input is lost with the primary fumes sucked from the EAF, to the cooling media by using a closed cycle working with an organic fluid (ORC) and produce Clean Electric Energy. The Organic Rankine Cycle (ORC) is a technology based on the exploitation of waste heat using a closed cycle working with an organic fluid. Using HWHP (Hot Water High Pressure) and a non- flammable fluid at medium pressure the design is simple and efficient. The advantages of this technology, compared to steam turbines, are based on: simple completely automatic machine, no O&M costs, choice of the right fluid to get the best heat recovery and conversion efficiency, no influence on the steel-making process, direct coupling with generator and grid, available for frequent start&stop cycles, good off-design performances, reduced delivery due to standard design.

Keywords

EAF; Environment; Dedusting; Energy.

EAF; Environment; Dedusting; Energy.