J A Y S O N R I P K E , P H . D .M I D R E X T E C H N O L O G I E S , I N C .
F O R P R E S E N T A T I O N A T :U . S . D E P A R T M E N T O F E N E R G Y ’ S
H 2 @ S C A L E W O R K S H O PM A Y 2 3 , 2 0 1 7
U N I V E R S I T Y O F H O U S T O N – H O U S T O N , T X
Innovative uses of Hydrogen in Steelmaking
I. The 2 Routes to SteelmakingI. Blast Furnace -> Basic Oxygen Furnace (BF/BOF)II. Electric Arc Furnace (EAF)
I. ScrapII. Scrap Supplements
I. Pig Iron, Direct Reduced Iron (DRI)
II. RD&D Needs for H2 SteelmakingI. Emerging RoutesII. Existing Routes: BF or EAF
Outline
BOF
Steel
Coke Oven
Coal
O2 Scrap/HBI
1500 °CLiquid ‘Hot Metal’
BlastFurnace
sinter
Lump Iron OreFine Iron Ore
Coke● fuel● reductant● structure
Option: 1 2 3
EAF
Solid Pig Iron
pellets
HBI
BriquetteMachine CDRI
HDRI
Coke
Scrap
Hot ‘air’ blast● O2● Coke breeze● H2?
NaturalGasH2?
● H2?
Electricity
Next Slide
600 °C
850 °CBF/BOF
DR
RD&D Needs for H2 SteelmakingEmerging Routes / Low CO2 Steelmaking
Hybrit (LKAB and SSAB) va PEM FIT (Sohn) - AISI ULCOS - Ultra-Low CO2
Steelmaking – 45 Europe, 48 groups/15 countries; aim: 50%CO2. HIsarna (Coal, sub bio or H2) ULCORED (DR w/Pox) ULCOWIN (electrolysis of FexOy)
MEFOS
Steelanol (PRI, AM) recycle CO2 into bioethanol
Carbon2chem CDA Salzgitter China Steel Baowu Course50 POSCO (nr 2009) CIRCORED (historical, not emerging)
RD&D Needs for H2 in SteelmakingExisting Routes: BF or EAF
EAF H2 for iron ore pelletizing? S, Q, E, R, CAPEX/OPEX, equipment
H2 replace/supplement R-NG(CO+H2) DRI/HBI product Quality
Physical: H2 embrittlement, CCS, tumble, fines, sticking/cluster
Metallurgical: reducibility, metallization, carbon
Mass & Energy Balance Flowsheet Energy Efficiency Production Rate
CAPEX/OPEX Equipment (embrittlement)
BF/BOF H2 for iron ore pelletizing? Any Δ S, Q, E, R in BF/BOF vs. EAF?
Supplement coke by H2 Fuel, reductant, structure Steel Quality
Mass & Energy Balance Flowsheet Energy Efficiency Production Rate
CAPEX/OPEX Equipment (embrittlement)
S = Safety, Q = Quality, E = Efficiency, R = Rate (throughput)