[2016 IEA CCS Summer School]
Introduction to Oxyfuel
Technology
PRESENTED BY MAX BALL, MANAGER, CLEAN COAL TECHNOLOGIES
July 17, 2016
Why Oxyfuel?
1.
$$$ (Worely Parsons Opinion next slide)
2.
Simple – seems like operations as usual
3.
No chemicals
4.
Zero Emissions ultimately possible
G l o b a l C C S Institute R e p o r t 2 0 11
What is Oxyfuel?
Steam
Activated
Carbon
Electricity
Feedwater
Heating
Loop
FURNACE
AIR
HTR
COAL
N2, CO2,Water
Traces
Nox,Traces
SO2
Limestone
FGD
FILTER
S
T
A
C
K
COA
L
AIR
ASH,
Water,
Trace Hg
CaSO4.H2O
(Gypsum)
Waste Storage
CONVENTIONAL COAL
5
Steam
Activated
Carbon
Electricity
Small
Stream:
CO2, Argon,
Feedwater
Heating
Loop
FURNACE
AIR
HTR
COAL
Limestone
FGD
FILTER
N2, CO2,Water
Traces
Nox,Traces
SO2
S
T
A
C
K
COA
L
Syn AIR
AIR
O2
AIR
SEPARATION
UNIT
95+%
CO2
CPU
ASH,
Water,
Trace Hg
CaSO4.H2O
(Gypsum)
Waste Storage
Trace
Materials
from Coal
N2
PERMANENT
GEOLOGICAL
STORAGE
TM
COMPLIANCE
COAL UNIT
SaskPower
Oxyfuel
Process
6
Steam
Electricity
Limestone
FURNACE
AIR
HTR
COAL
Small
Stream:
CO2, Argon,
Feedwater
Heating
Loop
FGD
FILTER
COA
L
Syn AIR
95+%
CO2
CPU
O2
AIR
SEPARATION
UNIT
ASH,
Water,
Trace Hg
CaSO4.H2O
(Gypsum)
Waste Storage
Trace
Materials
from Coal
N2
PERMANENT
GEOLOGICAL
STORAGE
TM
SaskPower
Oxyfuel
Process
COMPLIANCE
COAL UNIT
7
What did we find?
• Biggest technical risk: burner technology
• Air Ingress solved by use of ($$$ tubular air heaters)
• Air Firing Possible, but limited due to metal
• Very complex management of impurities
• Varieties of NOx found to immediately plug pore spaces in target
zone, need full removal
• Partial Capture capability important from a business perspective
but not possible with Oxyfuel
© Saskatchewan Power
Corporation. All rights
reserved.
B&W Air Liquide
Commercial Scale Trial
Tuesday, October 09, 2007 12:00 AM
At 8:44PM this evening B&W achieved full oxycoal combustion at 80MBtu input.
2007 version of Oxyfuel
(Shand 2)
Principle Characteristics:
•
•
•
•
•
•
450 MW generator nameplate
300 MW net with full (95%+) capture
300 MW gross air fired
Feed Study Cost Forecast: $1.5 B
Sum of bid prices $3.8 B plus risks
Cost of PreCommitment Engineering: $15 million
Principle Scope:
•
•
•
•
•
•
450 MW S. Critical pulverized coal unit
Air Separation Unit
Gas Clean Up and Compression Unit
500 kM Transmission Line
Mine Expansion with new dragline
50 kM CO2 pipeline
Developments Since
 CanMet
•
combustion clean up technology
•
Advanced cycles
 B&W test centre
•
proven Oxycombustion with PRB and SaskLignite
 Vattenfall (Shwartze Pumpe)
•
commercial validation of several burners
 Cuiden – near full cycle test facility
 Calide – full cycle test faclity
 FutureGen 2.0 – commercial development – funding lost
 White Rose– commercial development – funding lost
Opportunities and Challenges for
Oxyfuel Technology
• Process and Recycle vent stream to attain zero GHG
emissions
• ITM ???
• Pressurized combustion – lower compression power overall
• Pressurized Fluidized Bed
• Pressurized combustion integrated with SCCO2 cycle
• Must compete with Post Combustion which has bigger track
record
Thank you