Innovative Uses of Hydrogen in Steelmaking

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

DRI, HBI, & Pig

U.S. Shifting from BF/BOF to EAF/DRI SteelmakingBF/BOF

EAF

EAF

BF/BOF

DRI: Current & Projected Production

Energy Efficiency & EmissionsEAF/DRI vs. BF/BOF

voestalpine’s MIDREX NG® DR plant: Corpus Christie, TX

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)

Thank You