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Air Separation and CO2 Capture Units for Blast Furnace
Jean-Pierre TRANIER IEA GHG Iron & Steel CCS Workshop, Dusseldorf, 8th November 2011
The world leader in gases for industry, health and the environment 2
Overview Technology options for CO2 capture Top Gas Recycle Blast Furnace Air Separation Unit Conclusions
Agenda
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Air Liquide : a wide portfolio of technologies to reduce CO2 emissions
H2 energy
Biofuels
Photovoltaic
IGCC
Oxy-combustion
Steel plants H2 plants
Cement plants
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Partner in key pilot and large scale projects
30 MWth oxy-combustion boiler with CO2 capture & storage AL’ scope: burner, O2 , CO2 dryer
TOTAL Lacq - FRANCE (2010) CO2 Free Steam Generation
Experimental blast furnace with CO2 capture European program, 48 partners AL’ scope: CO2 removal unit (PSA)
ULCOS MEFOS - SWEDEN (2006) Low CO2 Steelmaking
20 MWth PC & 30 MWth
CFB oxy-combustion boilers
AL’ scope: CPU
CIUDEN – Spain (2011+) Carbon Capture test facility
200 MWe Oxy-coal Power plant
with CO2 capture for CCS
AL’ scope: ASU, CPU & mixer
FUTUREGEN 2.0 – USA (2010+) Clean coal power plant
Industrial blast furnace with CO2 capture & storage AL’ scope: ASU & CPU FEED study
ULCOS Florange - FRANCE (2010) Low CO2 Steelmaking
30 MWe coal oxy-combustion boiler with CO2 partial capture and storage AL’ scope: ASU, CPU
CS Energy – AUSTRALIA (2011+) Clean power pilot plant
The world leader in gases for industry, health and the environment 5
Overview Technology options for CO2 capture Top Gas Recycle Blast Furnace Air Separation Unit Conclusions
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Routes for CCS
Partial Oxidation Gasification Reforming
Post combustion capture
Example: Amines N2/CO2 separation
Transport
Shift CO+H2O<>CO2+H2
+ Rectisol/amines
H2 based process
Pre-combustion
Oxy-combustion
Post-combustion
Storage
CO2 capture units
1
2
3
Air based process
Gasification C+1/2O2<>CO
Oxygen based
process
CO/CO2 separation
Compression or liquefaction
Fossil fuels
Fossil fuels
(e.g. Coal)
1
2
3 O2
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Feed CO2 content
CO
2 P
uri
ty
20% 1% 80% 60% 40% 100%
Cryogenics
Membranes
Air Liquide CO2 separation technologies
MEDAL TM
Absorption
Adsorption
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Overview Technology options for CO2 capture Top Gas Recycle Blast Furnace Air Separation Unit Conclusions
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CO CO2 H2 (N2)
Rich CO2
CO, H2 (N2)
O2
General principle : 1. Nitrogen Free / Full Oxygen Blast Furnace 2. CO2 separation from CO and H2 which are recycled to BF
ULCOS concept : Top Gas Recycle Blast Furnace
ASU
CO/CO2 separation
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CO2 Capture from Blast Furnace
Amine scrubbing (aMDEA)
PSA + cryogenics
CAPEX
Price of electricity/CAPEX
Typical sensitivity study
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Mefos pilot plant
Since beginning of 2007, 9 test campaigns have performed (6-8 weeks duration each)
CO/CO2 separation tested using either VPSA or PSA cycles Several adsorbents tested (V)PSA concept for CO/CO2 separation on BFG validated TGR-BF and conventional BF modes tested
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Mefos pilot plant
Stable operation Simulation tool validated for Blast Furnace Gas Ageing of adsorbents assessed Successful trials of (V)PSA during challenging operating conditions
0
200
400
600
800
1000
1200
1400
1600
1800
07:12:00 07:40:48 08:09:36 08:38:24 09:07:12 09:36:00
Time (26/10/07)
Inje
ctio
n g
as f
low
rate
(N
m3/
h)
Stable flowrate ~5% fluctuations
CO recovery as predicted
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2 periods of tests :
Oct-Dec 2010
Feb-Jul 2011
Florange : filtration pilot
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Del
ta P
(m
bar)
Examples of pressure drop evolution
Period 1 Period 2
T3
temps (jour - h : m) ; du 18 au 21 Mars 2011
Del
ta P
(m
bar)
Temps (min:sec) Temps (min:sec)
T1 T2
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CO CO2 H2 (N2)
Rich CO2
CO, H2 (N2)
O2
Export CO2
Florange demonstration unit
CO , H2 ( N2)
ASU
PSA
CPU
Pre-FEED (Pre-Front End Engineering Design) completed mid-2011
FEED Study launched in September 2011 PSA chosen versus VPSA Size: 200 000 Nm3/h of Blast Furnace Gas
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Overview Technology options for CO2 capture Top Gas Recycle Blast Furnace Air Separation Unit Conclusions
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OXIAL–Air Liquide Solution for Air Enrichment
Existing Blast Furnace Blower(s)
OXIAL
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Overview Technology options for CO2 capture Top Gas Recycle Blast Furnace Air Separation Unit Conclusions
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Conclusions
Air Liquide has been deeply involved in the ULCOS program and has demonstrated in Mefos pilot plant the feasibility and the performances of a (Vacuum) Pressure Swing Adsorption system associated with Top Gas Recycle Blast Furnace
Filtration pilot plant at Florange has been successfully operated
Next step is to demonstrate Top Gas Recycle Blast Furnace at commercial scale
A new offer of Air Separation Unit dedicated to Blast Furnace application could almost reduce power consumption by a factor of 2 compared to high pressure, high purity oxygen for basic oxygen furnace
THANK YOU FOR YOUR ATTENTION
Contact [email protected]