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Bench scale design and development: Investigation of high frequency, high intensity ultrasonic for carbon rich solvent regeneration in solvent-based post combustion CO2 capture process PCCC for reducing CO2 capture energy demand

Subcategory (under Clean Energy): CCU
Technology Readiness Level (TRL): TRL 2-3
Technology Outline (Process Description)

To overcome the thermal degradation and solvent loss issues and minimize energy demand, one method for PCCC cost savings has emerged: sono-assisted solvent regeneration/ CO2 stripping. The ultra-low temperature sono-assisted CO2 stripping/ solvent regeneration to avoid solvent degradation using tank-type (bath-type) sonication and it provides a more uniform distribution of energy throughout the system, leading to better performance and scalable potential.

Salient Features/Advantages

CO2 stripping at the low temperature set point of 6°C and 12°C is found to be promising in all frequencies, indicating that CO2 stripping is primarily promoted by sonication, rather than by temperature. In addition, enhancing the high- frequency ultrasound-assisted aqueous carbon-rich 30 wt% monoethanolamine (MEA) solvent regeneration/ CO2 stripping process using Fe2O3 hydrophobic particles was investigated.

Key Outcomes

Designed and developed Bench Scale Unit for Conventional CO2 Capture for sono-assisted solvent regeneration/ CO2 stripping process. This technology can be retrofitted with existing solvent-based post combustion CO2 capture plants.

IP Protection details

  • Patent filed (Title, national/International):  “Sono-assisted Ultra-low Temperature CO2 Stripping/ Carbon-rich Solvent”, and “Intensification of Sono-assisted CO2 Stripping Using Hydrophobic Nano Particles”
  • Patents Granted: Nil
  • Copyrights obtained /progress on commercialisation /Pl. specify connect with industry: Nil

Contact details (for more information)

  • Nodal Person name: Dr. Ambedkar Balraj
  • Email ID: ambedkarb@ssn.edu.in
  • Organisation name (Relevant link/web page): SSN College
Supporting Photographs/Images

Organizations involved in the development (logo/name)

SSN College

Indian Institute of Technology (IIT) Madras

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