1. Carbon Capture Systems by Alstom – Clean Power Solutions
Jean-Michel Aubertin
San Francisco, Aug 5th, 2008
POWER SYSTEMS

2. CO2 Capture Solutions Power Plant with CO2 capture
SOLUTIONS DEVELOPED BY ALSTOM
Post -
combustion
Oxy -
combustion
Pre -
combustion
(New+retrofit)
(New +
retrofit )
Everyone here might not be familiar with the 3 major Capture technologies
Post C capture involves conventional plants. The technology is a back-end solution that treats the flue gas produced in a PC PP.
In oxy C, the fuel is combusted with pure O. After condensation of the water a rather pure stream of CO2 is obtained, ready for compression and storage.
In pre-C, the fuel, usually coal is converted into a synthesis gas by gasification. This synthesis gas is upgraded to hydrogen through a CO shift reaction, and CO2 is removed before the hydrogen combustion in a CC Plant. This process, is also called IGCC (..) and applies only to New Plants
Needless to say each has its advantages and disadvantages, each has its supporters and detractors.
There seems to me to be no point in going through these issues here, as we see a role and a place for each, with each needing its R&D, and demonstration prior to companies such as ALO being able to offer a commercial product.
Several solutions are being pursued in the industry for CO2 Capture, ALSTOM has given R&D priority to those solutions having also a retrofit potential on the installed base, like oxy-C and post C
(New
only)
Source: Vattenfall
Source: Vattenfall
Source: Vattenfall
Source: Vattenfall
CCS solutions must adapt on installed base
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3. Main partnerships & Projects
Stanford
(US) -
Gas
and Coal
0.25
MWt
Pleasant
Prairie (US) -
Coal 5
MWt
Mountaineer
(US) -
Coal 30
MWt
CHILLED
Northeastern
(US) -
Coal
>200
MWe
AMMONIA
Transalta
(Canada) -
Coal
200
MWe
Karlshamn (
Sweden ) -
Gas 5
MWt
Mongstad (
Norway ) -
Gas 40
MWt
ADVANCED
Joint
Development
Partnership
30 Mwt
AMINES
In Negotiations
>150 Mwe
Schwarze
Pumpe
(Germany) -
Coal 30
MWt
OXY -
COMB
250
MWe
Jänschwalde
Feasibility Study
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4. Chilled Ammonia Development Roadmap
Jul 06
Aug 06
2008
2009
2015
IGR
SGR
CGR
DGR
FGR 1
SRI Small Bench
Start detailed engineering
June 06
Nov 06
June 08
Test Plant Start-up 2
Large Bench Scale (SRI)
Tests completed
Jul 06
Jan 07
June 08
March 09 3
WE Energies Validation Pilot Coal - (15,000 TPY)
Oct 07 4
AEP Mountaineer - COAL (100,000 TPY)
May 07
July 07 3
E.ON Validation Pilot OIL/GAS (15,000 TPY)
Nov 07 4
StatoilHydro Mongstad -GAS (80,000 TPY)
Transalta ( TPY)
2015
AEP Northeastern ( TPY)
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5. Chilled Ammonia field pilot at We Energies
Designed to capture up to 15,000 tons/year of CO2
Testing to continue through 2008
Key Objectives:
Proof of Concept
Conduct long-term tests to establish process integrity
Measure energy consumption
Develop techno-economic analysis to scale the system for commercial applications
We Energies Pleasant Prairie Power Plant (P4)
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6. Field Pilot at We Energies
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7. Absorption
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8. Advanced Amines Development Roadmap
Sep 07
Nov 07
June 08
2009
2015
IGR
SGR
CGR
DGR
FGR
Technology
Licensing
Test Plant Start-up 1
Tests completed
Sept 07
July 08 2
Pilot test at UT 3
100,000 TPY VALIDATION
Commercial Scale Unit > 150 MW
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9. Amine Based Processes Amine CO2 capture is proven Retrofitable
Installed on a few plants burning coal
High energy demand for regeneration
Exclusive partnership with DOW
Advanced Amines
Improved Process
Plant Integration
PP Esbjerg
Denmark
1 t CO2/h pilot plant (CASTOR EU-FP6)
Warrior Run, Maryland
AES CFB w/MEA CO2 separation
SHADY POINT, OKLAHOMA, USA
AES CFB w/ MEA CO2 separation
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10. One Megawatt Pilot Facility – at University of Texas
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11. Oxy-Combustion Oxy-PC: Demonstration 30 MWth: Vattenfall
Demonstration/Validation program
Goal: validation and improvement
of oxyfuel process starting 2008
Main features
5,2 t/h solid fuel
10t/h oxygen
40 t/h steam
9 t/h CO2
ALSTOM supplies the oxy-boiler and ESP
Owner: P. Paelinck/JF Leandri/A.Schimkat
Large quantity of O2 required
CO2 separation with no use of chemicals
Smaller boiler and flue gas volume reduction (Low NOx)
On 20 September 2007, Vattenfall successfully installed the combustion chamber into the oxyfuel-boiler on the construction ground of the Schwarze Pumpe CO2-free pilot plant in Germany. The combustion chamber that weighs 23 tons was lifted into the boiler-house by a 600-ton-crane. Overall, the oxyfuel-boiler has a height of 25 metres, which made the process a logistic challenge. The whole process took about two hours and 30 people were involved to make it possible. The two CO2-capture tanks were installed on the same day. The combustion chamber was delivered by Alstom Power Boiler in Stuttgart, who will deliver the electrostatic precipitator for the flue gas as well.
Source: Vattenfall
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12. Vattenfall 30 MWth Oxy-fuel
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13. Vattenfall 30 MWth Oxy-fuel
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14. OxDP Study 250 MWe Jänschwalde – Oxy-fuel
Fuel Lignite (12% Water)
Steam Mass Flow t/h
SH/RH Temperature 535/540°C
SH/RH Pressure 165/40 bar
Load Range (w/o Support) %
DeNOx SCR
O2 purity 95% / 99.5%
CO2 Capture Rate >90%
CO2 Product Purity >95%
- Feasibilty study, started 1st of May 08, funded by Vattenfall
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15. Oxy-combustion: oxyfired CFB
Owner: P. Paelinck/JF Léandri
Several projects at MWth scale in preparation
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