good practices of energy efficiency in the · pdf...
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GOOD PRACTICES OF ENERGY EFFICIENCY IN THE EUROPEAN INDUSTRY PROCESSES -
Policies of incentivisation and implementation
Energy efficiency in Electric Arc Furnace steel production
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Outline of presentation
• Introduction to CSM
• Steelmaking energy demand:• A)Dataabout italian energy productionandutilization• B)Steelproductionandenergy consumption• C)EAFenergy demand
• Efficiency improvements
• Technological trends
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Building up of Corporate Know-How for Italian Steel
Making Industry
1963
2013
2003
Key player in the Technological Transfer, Innovative Solutions for
the Industry
1993
1983
1973
2014 ON
CORPORATE R&DFINSIDER
PRIVATIZATION
DIVERSIFICATION AND GLOBALIZATION
INTEGRATION IN THE
RINA GROUP
Start selling of Know How to New Clients and
Markets
1963 START UP
4Ending 2015
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RESEARCH INDUSTRIAL APPLICATIONDEVELOPMENT
Idea Developing Prototype/Demo Development
Development & Engineering
Idea Generation
ConceptualDesign
Demo & Performance
Mature Product & Processes
CSM Industry
Technology Readiness Level (TRL)
1 2 3 4 5 6 7 8 9
CSM APPROACH FOR INNOVATION & RESEARCH
Academy
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CSM APPROACHCSM has both high level technical skills and state of the art laboratories which allows toassess product/process/plant performances as well as to develop new solutions
§ Study of customer needs§ Market benchmarking§ Lab analysis
ASSESSMENT
§ Complementary technical competences§ Positive experience from similar cases§ New solutions
IDEA
§ Fit for purpose analysis and lab testing§ Experimental check at real scaleVERIFICATION
§ Product/process suitable for the application/market§ New product/process with better performances/cheaper§ Support to implementation
SOLUTION
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Italian energy production and utilization
Electricityutilization dividedper differentsectors
Industry accounts of 20% of energyconsumption
Electricity utilizationdivided per differentindustrial sectors
Metal sector isabout 25%
Rapporto Annuale Efficienza Energetica – RAEE 2015
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Steel production in Italy
78% of italian steel production is via EAF route
39% of european steel production is via EAF route
Relazione Annuale Federacciai 2015
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Steelmaking energy demand
Electrical energy consumption20,000 GWh annual consumption (2012) (3 740 000 TOE)(1GWh=187TOE*)
Delibera AEEG 9/11 EEN, Allegato A
Natural gas consumption2,000 M m3 annual consumption (2012) (1 650 000 TOE)(1Mm3=825ToE*)
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Steelmaking energy demand Electric arc furnace
Natural gas burner
electrodes
Electrical energy
Chemical energy
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Steelmaking energy demand
EAF energy balance
Average consumption0.1TOE/t steel
~12 TOE/heat (~1hour)typical furnace size
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Steelmaking energy demand
EAF Tehnological evolution and
consumption reduction
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Recent improvements in EAF steel productionand future trends
Efficiency improvements
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Efficiency improvements
How to increase energy efficiency?
• Reduction of energy demand- operating practice optimization- more flexible use of fuels and materials
• Increase of steel weight at tap- reduction of metallic losses
• Reduction of energy losses- higher insulating materials- reduction of water cooling
• Increase the rate of energy recovered- energy recovery from off gas and other hot by-products
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Efficiency improvements
Scrap pre-heating and scrap continuous charging allows energyreduction1. Shaft furnaces, operating with continuous or semi-
continuous charging2. Consteel, operating with a tunnel conveyor for continuous
charging
Increase the rate of energy recoveredScrap pre-heating
Siemens
ORI Martin Tenova Consteel
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Efficiency improvementsProducerProduct
Chargingtechnology
Charge ElectricalEnergy(kWh/t)
CH4(m3STP/t)
Reference situation
Conventional Topcharge
Bucket ~380 ~8
Siemens VAIPrimetalsQuantum
Shaft3-4 batches ~280 ~4
FuchsCOSS
Shaft 3-4 batches ~300 ~2
CVSEPC
Shaft 3-4 batches ~300 ~3
JPSPEcoArc
Shaft 12-13 batches ~280 ~2
TenovaConsteel
Continuouscharging conveyor
continuous ~350 ~0
TenovaConsteelevolution
Consteel continuous ~310 ~8
Increase the rate of energy recoveredScrap pre-heating
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Efficiency improvements
Energy recovery
Increase the rate of energy recoveredEnergy recovery
Development of systems for maximization of energy transfer from hot gases at 1500-1700 °C with high content of dust without drawback in the micro-pollutant emissions
Intelligent optimization system for energy storing and distribution
Development of systems for energy transfer from slag to high temperature fluid with high efficiency not detrimental for slag quality
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Fromthesingleplantapproach …
• Up to now the efforts for higher energy efficiency have been focused onthe single plant
• The EAF, which represents the 70% of Italian steel production is anemblematic case
• Large efforts of process optimization lead in the last 40 years to asignificant reduction of energy consumption (50% of reduction ofelectrical energy)
• Further savings are still possibile from optimization of operating practice,reduction of losses, utilization of waste heat
• These efforts are bringing to the absolute limits.
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…toward across-sectorialapproach
• A further improvement is only possible with a new approach, based a across-sectorial vision
• Energy saving can be seen in an integrated view according to the logicof circular economy, where waste heatsand waste materials are used insideand outside the steel plant
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Conceptual design of steel industry based industrial symbiosis: Piombino case
Power plant Smartgrid
EAF
Dedicated plasma furnace
Wastes (batteries)biomass Gasifier
Ships dismantling
HARBOR
Scrap Iron ore
Valuable products(ballast)
Steelmaking plants
Solar station
Slag,scale,…
Syng
as,char
DRI
CO2 utilization
HotmetalDust
Gas
INDUSTRIAL DISTRICT
STEELSHOP
AGRICULTURALDISTRICT
ENERGY GENERATION AND DISTRIBUTION
Material flow Energy flow
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Conceptual design of steel industry based industrial symbiosis: Piombino case
Power plant Smartgrid
EAF
Dedicated plasma furnace
Wastes (batteries)biomass Gasifier
Ships dismantling
HARBOR
Scrap Iron ore
Valuable products(ballast)
Steelmaking plants
Solar station
Slag,scale,…
Syng
as,char
DRI
CO2 utilization
HotmetalDust
Gas
INDUSTRIAL DISTRICT
STEELSHOP
AGRICULTURALDISTRICT
ENERGY GENERATION AND DISTRIBUTION
Material flow Energy flow TRL7
TRL3
TRL3
TRL5
TRL3 TRL8TRL6
TRL7
TRL9
TRL9
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Thanks for yourattention
Filippo CirilliProject Manager
Voice: +39 06 5055286Mobile: +39 3470996402E-mail: [email protected]