Carbon dioxide Separation Technology from Biogas by 'Membrane/Absorption Hybrid Method'

摘要

"Membrane / absorption hybrid method" is a technology developed by Research Institute of Innovative Technology for the Earth (RITE) aiming to separate / collect carbon dioxide in exhaust combustion gas at low cost and in high purity. RITE and Taiyo Nippon Sanso Corporation (TNSC) had developed a biogas concentration unit that utilizes "membrane / absorption hybrid method" jointly. We had succeeded to improve the regeneration efficiency of carbon dioxide absorption solution for circulated use while maintaining high methane gas recovery rate, and improved the recovery rate of carbon dioxide. Moreover, it turned out that separation cost can be reduced by using the separation process using the source of surplus waste heat at a biogas generation site.