CO₂ Capture Technologies: What You Need to Know for Net-Zero

Carbon Capture and Storage (CCS) is a critical enabler for decarbonisation, allowing continued use of fossil fuels while cutting emissions by up to 90%. But not all capture methods are equal—here’s the breakdown:

✅ Post-Combustion
Method: Capture from flue gases using chemical absorption
Gas: Low CO₂ (3–14%) at atmospheric pressure
Cost: Moderate (US$29–74/tCO₂ avoided)
Status: Retrofit-friendly, commercially available

✅ Pre-Combustion
Method: Capture after fuel processing and water gas shift
Gas: CO₂ 15–60%, pressure 2–7 MPa
Cost: Moderate (US$31–56/tCO₂ avoided)
Status: Ready for IGCC, not yet deployed

✅ Oxyfuel Combustion
Method: Combustion with pure oxygen → CO₂-rich flue gas
Gas: >80%, up to 95% CO₂
Efficiency: Capture >90%
Status: Demonstration phase

📊 Energy Penalty :
Adding CCS increases plant energy input significantly:
NGCC: +11–22%
IGCC: +14–25%
PC: +24–40%

Takeaway: Industrial separation = lowest cost. Oxyfuel = highest capture efficiency. Post- and pre-combustion remain essential for power and hydrogen sectors.

Which CO₂ capture pathway do you see scaling fastest in your industry?

Source:

https://www.linkedin.com/feed/update/urn:li:activity:7390296556735860736