CO₂ Capture Simulation Tutorials

Simulating solvent-based carbon dioxide capture in modern commercial software packages can be very challenging. This textbook chapter provides tutorials for overcoming major challenges such as physical property package selection, absorber model convergence, and flowsheet convergence. The chapter also provides advice for creating initial guesses for solvent flow rates, initializing tear streams, and performing sensitivity analyses. Over 20 simulation examples are provided for Aspen Plus, Aspen Hysys, ProMax, and Pro/II, and includes examples for the following applications:

• Removal from coal-derived 1:1 syngas for coal-to-liquid applications
• Removal from natural gas-derived 2:1 syngas for gas-to-liquid applications
• Removal from natural gas-derived 2:1 syngas for gas-to-liquid applications, absorber @ 27 bar
• Removal from natural gas-derived 2:1 syngas for gas-to-liquid applications, absorber @ 52 bar
• Removal from natural gas power plant combustion exhaust using the Amines physical property model
• Removal from natural gas power plant combustion exhaust using the ElecNRTL physical property model
• Removal from coal power plant combustion exhaust using the ElecNRTL physical property model
• Removal from IGCC power plant pre-combustion syngas using the Amines physical property model
• Removal from IGCC power plant pre-combustion syngas using the ElecNRTL physical property model
• Removal from natural gas power plant combustion exhaust using the Amines physical property model
• Removal from IGCC power plant pre-combustion syngas generated from air gasification using the DRMAmines physical property model
• Removal from IGCC power plant pre-combustion syngas generated from high-purity oxygen gasification using the DRMAmines physical property model
• Removal from IGCC power plant pre-combustion syngas generated from air gasification using the SRK-PR physical property model
• Removal from IGCC power plant pre-combustion syngas generated from air gasification using the SourPRLK physical property model

Solvent examples include:

• MEA
• MDEA
• MDEA/Piperazine
• DGA
• Selexol
• Reectisol

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