公开(公告)号：US20240342641A1

公开(公告)日：2024-10-17

申请号：US18251346

申请日：2022-12-16

Applicant: Zhejiang University

Inventor： Tao Wang ,  Weishan Liu ,  Mengxiang Fang ,  Xiang Gao ,  Zhongyang Luo

IPC: B01D53/04 ,  B01D61/46 ,  B01D71/28 ,  B01D71/36 ,  C01B32/50

CPC classification number: B01D53/04 ,  B01D61/463 ,  B01D71/281 ,  B01D71/36 ,  C01B32/50 ,  B01D2257/504 ,  B01D2258/06 ,  B01D2259/40083 ,  B01D2313/345

Abstract: Disclosed is an energy-saving system and method for direct air capture with precise ion control. The system includes an air conveying device, an air distribution device and a CO2 adsorption device with a moisture swing adsorbent with high CO2 adsorption capacity, where the air conveying device, the air distribution device and the CO2 adsorption device are connected in sequence, and the CO2 adsorption device is provided with a spray desorption device; a valence-state ion sieving device; a pH swing regeneration device; and a CO2 regeneration device. In accordance with the energy-saving system provided by the present disclosure, ultra-low concentration of CO2 in the air can be enriched to the concentration of 95% step by step for industrial application or biological application at room temperature and pressure by consuming the electricity which cannot be connected to a power grid.