Recovery of adsorption capacity of beaded activated carbon using gas-phase organic solvents

US11369946B2 · kind B2 · utility

Assignees

• Ford Global Technologies, LLC · US
• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

• Hiroko Ohtani · Dearborn Heights, US
• Kevin Richard John Ellwood · Ann Arbor, US
• Maithri Venkat · Beverly Hills, US
• Adarsh Bhat · Ann Arbor, US
• Johannes Schwank · Ann Arbor, US

Key dates

• Filing date: Sep 13, 2019
• Grant date: Jun 28, 2022
• Expiry date: Dec 30, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/4009
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Methods for desorbing volatile organic compounds (VOCs) from beaded activated carbon (BAC) that is loaded with VOCs, during the VOC abatement process using the fluidized carbon bead system include transferring the loaded BAC in an adsorber to a desorber, where a stream of organic solvent passes over the BAC to dissolve at least a portion of the adsorbed VOCs into the organic solvent to regenerate BAC. The regenerated BAC is returned to the adsorber. The organic solvent containing dissolved VOCs may be transferred to a distiller to separate the organic solvents from the dissolved VOCs and may be reused as the organic solvent in the desorber.