1. CARBON CAPTURE PHYSICAL SOLVENT SCRUBBING SIMULATION SELEXOL PROCESS

2. One quarter of the world’s coal reserves are in the United States. The energy content of the nation’s coal resources exceeds that of all the world’s known recoverable oil. www.energy.gov During his campaign for the Presidency, George W. Bush pledged to commit $2 billion over 10 years to advance clean coal technology Dept. of Energy, Electric Power Research Institute, Coal Utilization Research Council Critical Technology Needs Integrated Plants Module designs, Systems Integration, high temperature materials, Plant Simulation Capability, sensors & controls, intelligent plant operation CARBON CAPTURE POLITICS In the coming years, power companies are to build about 150 coal plants to meet the growing electricity demand. Despite expectations almost none of the plants will be built to capture the thousands of tons of carbon dioxide that will be generated. NYT, Feb. 20, 2007

3. Global CO2 Emissions from Fossil Fuels in E10 tonne CO2/yr GLOBAL CO2 EMISSIONS

4. US POWER GENERATION AND CO2 EMISSIONS PROFILE

5. CO2 CAPTURE & SEQUESTRATION

8. COAL GASIFICATION & SYNGAS CYCLE

9. I NTEGRATED G ASIFICATION C OMBINED C YCLE

10. Process (and solvent) Owner Use Sulfinol (MDEA-accelerator) Shell Natural-refinery-syn gases Selexol (PEGDME) UOP Natural-refinery-syn gases Rectisol (Cold MeOH) Linde Heavy oil partial oxidation Lurgi Gasification Purisol (N-methyl-2-pyrrolidone) Lurgi Natural-refinery-syn gases Catacarb (Hot K2CO3-activator) Eickmeyer Any mixed-gas stream Benfield (Hot K2CO3-inhibitor) UOP Natural-refinery-syn gases-H2 Amines Any mixed-gas stream GAS ABSORPTION PROCESSES FOR CO2 REMOVAL

11. SELEXOL TM SCRUBBING

12. CO 2 CAPTURE VIA SELEXOL TM SCRUBBING

13. DESIGN PROCEDURE

14. CO 2 PHASE DIAGRAM Operating Points

15. SOLUBILITY OF GASES IN SELEXOL TM SOLVENT

17. Components 1483 Clariant Genosorb 1753 Clariant CHEMCAD User Switzerland & Germany

22. SULZER COLUMN INTERNALS M500Y

23. Liquor Flow = 54600 gpm Gas Inlet = 245097 scfm Gas / Liquor = 4.5 scfm / gal Selexol SULCOL COLUMN SIZING Sulzer use CHEMCAD in Switzerland, Italy & Singapore

24. SIZING CASE

27. SELEXOL CO 2 ABSORPTION SIMULATION COMMENTS 1.NRTL bip regression method for partial pressure needed 2.CO 2 User Component (UC) behaviour to validate 3.SCDS Mass Transfer convergence sensitive with (UC) 4.SCDS Mass Transfer matrix report to be simplified 5.PR (H2O Immiscible) with special bip feature to prove 6.Henry’s Law Coefficients for User Components 7.Random and structured packing data very limited 8.Sulzer packing sizing link needs finishing