The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2021
Filed:
Jul. 09, 2020
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Francisco E. Torres, San Jose, CA (US);
Eugene Shin Ming Beh, Portola Valley, CA (US);
Jessica Louis Baker Rivest, Palo Alto, CA (US);
PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);
Abstract
A method of removing carbon dioxide from an atmosphere and generating hydrogen includes capturing carbon dioxide from the atmosphere in an alkaline capture solution, sending the alkaline capture solution to a series of electrolyzers in a CO-rich path, wherein each electrolyzer cell raises the acidity of the input CO-rich solution to produce an acidified CO-rich solution, removing carbon dioxide from the acidified CO-rich solution at a carbon dioxide removal unit operation to produce a CO-poor solution, sending the CO-poor solution to the series of electrolyzers in a return path, wherein each electrolyzer raises the alkalinity of the return CO-poor solution to produce a basified CO-poor solution, wherein a difference in pH between the CO-rich solution and the CO-poor solution within each electrolyzer is less than 3, and returning the basified CO-poor solution to the carbon dioxide capture unit operation.