Capture of carbon dioxide (CO2) from air

US9616375B2 · kind B2 · utility

Assignee

• Carbon Sink Inc. · US

Inventors

• Allen B. Wright · Tucson, US
• Klaus S. Lackner · Dobbs Ferry, US
• Ed Leon-Guerrero · Tucson, US
• Ursula Ginster · Tucson, US
• Tymothy Catterson · Tucson, US
• Karl Madison · Tucson, US
• Ryuhei Ishikawa · Tucson, US
• George W. Grimm · Tucson, US
• Mark Malcomson · Tucson, US
• Ping Liu · San Diego, US

Key dates

• Filing date: Jan 24, 2014
• Grant date: Apr 11, 2017
• Expiry date: Jan 24, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Disclosed is a method for removing carbon dioxide from a gas stream, comprising placing the gas stream in contact with a resin, wetting the resin with water, collecting water vapor and carbon dioxide from the resin, and separating the carbon dioxide from the water vapor. The resin may be placed in a chamber or a plurality of chambers connected in series wherein the first chamber contains resin that was first contacted by the gas, and each successive chamber contains resin which has been wetted and carbon dioxide collected from for a greater period of time than the previous chamber, and so on, until the last chamber. Secondary sorbents may be employed to further separate the carbon dioxide from the water vapor.