Regeneration of the Absorbent by the PTFE Hollow Fiber Membranes Using Vacuum Membrane Regeneration Technology

Abstract:

The polytetrafluoroethylene (PTFE) hollow fiber membranes were prepared through a cold pressing method including paste extruding, stretching and sintering in this study. Membrane vacuum regeneration technology (MVR) was developed as a novel regeneration technology for regeneration of the absorbent. The membrane structures of the PTFE hollow fiber membranes were investigated. The mixture of N-methyldiethanolamine and piperazine was selected as the absorbent. The PTFE hollow fiber membranes were used for regeneration through vacuum membrane regeneration technology. The CO₂ regeneration flux and regeneration ratio increased with the increase of the regeneration temperature and the CO₂ loading. The regeneration pressure was negative to the regeneration flux and regeneration ratio. When the flow rate of the rich solution increased, the regeneration ratio decreased and CO₂ regeneration flux increased significantly.

• Periodical: Key Engineering Materials (Volume 671)
• Pages: 300-305
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.671.300
• Online since: November 2015
• Authors: Kun Wang, Feng Wang, Yu Hai Guo, Hong Yan Tang*, Hua Peng Zhang
• Keywords: Carbon Dioxide, PTFE Hollow Fiber Membranes, Vacuum Membrane Regeneration

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