Table of Contents
Absorption is a common method used in capturing carbon dioxide (CO₂) from flue gases emitted by industrial processes. This technique involves the transfer of CO₂ from the gas phase into a liquid solvent, enabling its removal before gases are released into the atmosphere.
Process Overview
The absorption process typically uses a solvent such as amine solutions, which react chemically with CO₂. Flue gases are passed through a contactor where the solvent absorbs the CO₂. The CO₂-rich solvent is then regenerated in a stripper, releasing pure CO₂ for storage or utilization.
Advantages of Absorption
This method is well-established and effective for capturing high concentrations of CO₂. It allows for continuous operation and can be integrated into existing power plants with relative ease. The captured CO₂ can be stored underground or used in other industrial processes.
Challenges and Considerations
Absorption requires significant energy input, especially for solvent regeneration. The choice of solvent impacts efficiency and environmental impact. Additionally, corrosion and solvent degradation are ongoing concerns that need management.
- High energy consumption
- Corrosion issues
- Solvent degradation
- Operational costs