公开(公告)号：US20230285890A1

公开(公告)日：2023-09-14

申请号：US18306346

申请日：2023-04-25

申请人： DENSO CORPORATION

发明人： Takamasa ITO ,  Hiroaki UMEDA

IPC分类号： B01D53/053 ,  C01B32/50

CPC分类号： B01D53/053 ,  C01B32/50 ,  B01D2258/01 ,  B01D2258/06 ,  B01D2253/204 ,  B01D2257/504 ,  B01D2259/40009 ,  B01D2259/40003 ,  C01B2210/0014

摘要： A carbon dioxide recovery system includes: an adsorber configured to adsorb and desorb carbon dioxide; a supply channel through which supply gas passes; a storage section configured to store carbon dioxide desorbed from the adsorber; and a gas supply section supplying carbon dioxide stored in the storage section to the adsorber. The carbon dioxide recovery system is operated in an adsorption mode, a desorption mode or in a desorption preparation mode. In the adsorption mode, the adsorber adsorbs CO2 contained in the supply gas supplied through the supply channel. In the desorption mode, the adsorber desorbs the adsorbed CO2, and the storage section stores CO2 desorbed from the adsorber. In the desorption preparation mode, the gas supply section supplies CO2 stored in the storage section to the adsorber during a time from an end of the adsorption mode to a start of the desorption mode.

公开(公告)号：US20220134278A1

公开(公告)日：2022-05-05

申请号：US17515666

申请日：2021-11-01

申请人： DENSO CORPORATION ,  KYOTO UNIVERSITY

发明人： Hiroaki UMEDA ,  Youhei MORIMOTO ,  Hiroki TAKEZAKI ,  Satoshi HORIKE

IPC分类号： B01D53/32 ,  C25B11/043 ,  C25B11/031

摘要： Provided is a carbon dioxide recovery system that separates CO2 from a CO2-containing gas containing CO2 by an electrochemical reaction, and comprises an electrochemical cell comprising a working electrode containing a CO2 adsorbent, and a counter electrode. Application of a voltage between the working electrode and the counter electrode causes electrons to be supplied from the counter electrode to the working electrode, and enables the CO2 adsorbent to bind to CO2 as electrons are supplied. The CO2 adsorbent is a crystalline porous body, and has a molecular structure in which a functional group that exchanges electrons and binds to CO2 is regularly arranged.

公开(公告)号：US20230383429A1

公开(公告)日：2023-11-30

申请号：US18321060

申请日：2023-05-22

申请人： DENSO CORPORATION

发明人： Hiroki TAKEZAKI ,  Hiroaki UMEDA ,  Hironori TATSUMI

IPC分类号： C25B15/08 ,  B01J20/20 ,  B01J20/34

CPC分类号： C25B15/085 ,  B01J2220/4812 ,  B01J20/3483 ,  B01J20/20

摘要： A carbon dioxide recovery system includes an electrochemical cell. The electrochemical cell includes a working electrode, a counter electrode, and an electrolytic solution. The working electrode includes a CO2 adsorbent. The working electrode and the counter electrode are disposed to sandwich the electrolytic solution therebetween. The CO2 adsorbent is configured to absorb CO2 in response to a voltage being applied between the working electrode and the counter electrode and electrons being supplied from the counter electrode to the working electrode. The CO2 adsorbent is a porous body having pores, and a pore diameter of the pores is larger than an ion diameter of the electrolytic solution.

公开(公告)号：US20230330588A1

公开(公告)日：2023-10-19

申请号：US18338074

申请日：2023-06-20

申请人： DENSO CORPORATION

发明人： Hiroki TAKEZAKI ,  Hiroaki UMEDA ,  Takamasa ITO

IPC分类号： B01D53/047 ,  B01D53/04 ,  B01J20/22 ,  B01J20/34 ,  C01B32/50

CPC分类号： B01D53/047 ,  B01D53/0407 ,  B01J20/226 ,  B01J20/3483 ,  B01J20/3425 ,  C01B32/50 ,  B01D2253/204 ,  B01D2257/504 ,  B01D2259/655 ,  C01B2210/0021

摘要： A carbon dioxide recovery system, which is configured to separate and recover carbon dioxide from a carbon dioxide containing gas, includes an adsorption unit that includes an adsorbent material that is configured to adsorb and desorb the carbon dioxide. The adsorbent material is configured to radiate heat in response to adsorption of the carbon dioxide and is configured to absorb the heat in response to desorption of the carbon dioxide. The adsorption unit is one of a plurality of adsorption units, and adjacent two adsorption units among the plurality of adsorption units contact with each other. When one of the adjacent two adsorption units adsorbs the carbon dioxide, another one of the adjacent two adsorption units desorbs the carbon dioxide.

公开(公告)号：US20230381715A1

公开(公告)日：2023-11-30

申请号：US18318757

申请日：2023-05-17

申请人： DENSO CORPORATION

发明人： Hiroki TAKEZAKI ,  Hiroaki UMEDA ,  Hironori TATSUMI

IPC分类号： B01D53/32 ,  B01D53/04

CPC分类号： B01D53/326 ,  B01D53/04 ,  B01D2253/204 ,  B01D2256/22 ,  B01D2257/504 ,  B01D2255/1021 ,  B01D2255/1026 ,  B01D2255/402 ,  B01D2255/806 ,  B01D2255/1028 ,  B01D2255/2073

摘要： A carbon dioxide recovery system separates CO2 from gas containing CO2 via an electrochemical reaction. The carbon dioxide recovery system includes an electrochemical cell including a working electrode and a counter electrode. The working electrode includes CO2 adsorbent. The CO2 adsorbent adsorbs CO2 via an oxygen reduction reaction by using electrons supplied from the counter electrode to the working electrode when a first voltage is applied between the working electrode and the counter electrode. The oxygen reduction reaction produces active oxygen via reduction of O2. The CO2 adsorbent desorbs CO2 by discharging electrons from the working electrode to the counter electrode when a second voltage different from the first voltage is applied between the working electrode and the counter electrode. The CO2 adsorbent has a promoting function for promoting the oxygen reduction reaction.

公开(公告)号：US20220274056A1

公开(公告)日：2022-09-01

申请号：US17681896

申请日：2022-02-28

申请人： DENSO CORPORATION

发明人： Hayata OGURA ,  Hiroaki UMEDA

IPC分类号： B01D53/32

摘要： A carbon recovery system and method improve purity of carbon dioxide when it is recovered and include an electrochemical cell including a working electrode and a counter electrode. When a given voltage is applied between the working electrode and the counter electrode, electrons are supplied from the counter electrode to the working electrode. The working electrode then combines with carbon dioxide upon receiving the electrons supplied thereto. An adsorber accommodates the electrochemical cell and introduces a carbon dioxide-containing gas to itself. A liquid supply section supplies liquid to the adsorber with a given voltage being applied between the working electrode and the counter electrode. A discharge section discharges the liquid supplied from the liquid supply section and carbon dioxide-removed gases from the adsorber with the given voltage being applied between the working electrodes and the counter electrode.

公开(公告)号：US20220118401A1

公开(公告)日：2022-04-21

申请号：US17505960

申请日：2021-10-20

申请人： DENSO CORPORATION

发明人： Hiroaki UMEDA ,  Go IIJIMA

IPC分类号： B01D53/32 ,  B01J20/28 ,  B01J20/22 ,  B01D53/02

摘要： Provided is an electrochemical cell comprising a working electrode and a counter electrode. The working electrode comprises an electrode base material, a CO2 adsorbent, and a binder. Application of a voltage between the working electrode and the counter electrode causes electrons to be supplied from the counter electrode to the working electrode, and enables the CO2 adsorbent to bind to CO2 as electrons are supplied. The binder has electrical conductivity, and the CO2 adsorbent is held in the electrode base material by the binder.