carbon capture physical solvent scrubbing simulation selexol process

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CARBON CAPTURE

PHYSICAL SOLVENT SCRUBBING

SIMULATION

SELEXOL PROCESS

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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 CouncilCritical 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

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Global CO2 Emissions from Fossil Fuels in E10 tonne CO2/yr

GLOBAL CO2 EMISSIONS

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US POWER GENERATION AND CO2 EMISSIONS PROFILE

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CO2 CAPTURE & SEQUESTRATION

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CO2 CAPTURE & SEQUESTRATION

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CO2 CAPTURE & SEQUESTRATION

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COAL GASIFICATION & SYNGAS CYCLE

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INTEGRATED GASIFICATION COMBINED CYCLE

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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

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SELEXOL TM SCRUBBING

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CO2 CAPTURE VIA SELEXOL TM SCRUBBING

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DESIGN PROCEDURE

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CO2 PHASE DIAGRAM Operating Points

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SOLUBILITY OF GASES IN SELEXOL TM SOLVENT

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Components 1483

Clariant Genosorb 1753

Clariant CHEMCAD User Switzerland & Germany

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SULZER COLUMN INTERNALS

M500Y

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Liquor Flow = 54600 gpmGas Inlet = 245097 scfmGas / Liquor = 4.5 scfm / gal Selexol

SULCOL COLUMN SIZING

Sulzer use CHEMCAD in Switzerland, Italy & Singapore

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SIZING CASE

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SELEXOL CO2 ABSORPTION SIMULATION COMMENTS

1. NRTL bip regression method for partial pressure needed2. CO2 User Component (UC) behaviour to validate

3. SCDS Mass Transfer convergence sensitive with (UC)4. SCDS Mass Transfer matrix report to be simplified5. PR (H2O Immiscible) with special bip feature to prove6. Henry’s Law Coefficients for User Components7. Random and structured packing data very limited8. Sulzer packing sizing link needs finishing

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THE END THANK YOU