公开(公告)号：US20250121322A1

公开(公告)日：2025-04-17

申请号：US18986902

申请日：2024-12-19

Applicant: DENSO CORPORATION

Inventor： Hiroaki UMEDA ,  Hironori TATSUMI ,  Yoshiki MORIOKA

IPC: B01D53/32 ,  B01D53/62 ,  C01B32/50

Abstract: A carbon dioxide recovery system is for separating CO2 from a CO2 containing gas that contains CO2 through electrochemical reactions and includes an electrochemical cell in which a working electrode including a CO2 adsorbent and a counter electrode are disposed to sandwich an electrolyte. The CO2 adsorbent is configured to absorb CO2 in response to electrons being supplied from the counter electrode to the working electrode due to a voltage applied between the working electrode and the counter electrode. The electrolyte is made of a material that satisfies at least one of requirements that a dissolved oxygen concentration is 0.2 cm3/cm3 or less and an oxygen diffusion coefficient is 5×10−7 cm−2/s or less.

公开(公告)号：US20250114742A1

公开(公告)日：2025-04-10

申请号：US18906204

申请日：2024-10-04

Applicant: DENSO CORPORATION

Inventor： Yoshiki MORIOKA ,  Yuki FUJITA ,  Shohei TANIGUCHI

IPC: B01D53/32

Abstract: An acid gas recovery system includes an electrochemical cell and an electrolytic solution. The electrochemical cell includes a working electrode and a counter electrode and is configured to transfer electrons between the working electrode and the counter electrode in response to an application of a voltage between the working electrode and the counter electrode. The electrolytic solution is disposed between the working electrode and the counter electrode and contains at least a reducing agent configured to reduce reactive oxygen. At least one of the electrochemical cell and the electrolytic solution contains an adsorbing agent. The adsorbing agent is configured to adsorb an acid gas contained in an acid gas containing gas to recover the acid gas in accordance with supply of electrons from the counter electrode to the working electrode in response to an application of a first voltage between the working electrode and the counter electrode.

公开(公告)号：US20240252981A1

公开(公告)日：2024-08-01

申请号：US18619372

申请日：2024-03-28

Applicant: DENSO CORPORATION

Inventor： Yoshiki MORIOKA ,  Hiroki Takezaki

IPC: B01D53/32 ,  B01D53/02 ,  B01D53/62

CPC classification number: B01D53/326 ,  B01D53/02 ,  B01D53/62 ,  B01D2253/25 ,  B01D2257/504 ,  B01D2259/812

Abstract: A carbon dioxide recovery system separates carbon dioxide from a carbon dioxide contained gas that contains carbon dioxide by an electrochemical reaction. The carbon dioxide recovery system includes an electrochemical cell including a working electrode and a counter electrode, the working electrode including a carbon dioxide adsorbent. When a voltage is applied between the working electrode and the counter electrode, electrons are supplied from the counter electrode to the working electrode, and the carbon dioxide adsorbent adsorbs carbon dioxide as the electrons are supplied. An electrolytic substance is provided between the working electrode and the counter electrode. The electrolytic substance is a substance having resistance to a redox reaction with at least one of the carbon dioxide contained gas, the working electrode, or the counter electrode when a voltage is applied between the working electrode and the counter electrode.