Apparatuses and methods for energy efficient separations including refining of fuel products

US9868911B2 · kind B2 · utility

Assignees

• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US
• United States of America as represented by the Secretary of the Air Force · US

Inventors

• Josiah T. Reams · Lancaster, US
• Andrew Guenthner · Lancaster, US
• Joseph M. Mabry · Lancaster, US
• Kevin Lamison · Lancaster, US
• Anish Tuteja · Ann Arbor, US
• Arun Kumar Kota · Ann Arbor, US
• Gibum Kwon · Lawrence, US

Key dates

• Filing date: Oct 8, 2014
• Grant date: Jan 16, 2018
• Expiry date: Oct 8, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249978
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In various aspects, methods and apparatuses for liquid-liquid extraction are provided. In certain aspects, an emulsion can be formed by combining a feed stream, an extractant, and a surfactant. The feed stream comprises a plurality of distinct components including a first component to be removed therefrom. The feed stream may be selected from a group consisting of: a hydrocarbon feed stream and an azeotrope. Then, a portion of the first component is extracted from the feed stream (or emulsion) by contact with a superoleophobic and hygroscopic membrane filter that facilitates passage of the first component and extractant through the superoleophobic and hygroscopic membrane filter. A purified product is collected having the portion of the first component removed. Such methods are particularly useful for refining fuels and oils and separating azeotropes and other miscible component systems. Energy-efficient, continuous single unit operation apparatuses for conducting such separation techniques are also provided.