Carbon Capture

Dan Fang

William Tod Gross

Brian J Holman

Saeb M Besarati

Andrea Pedretti

Eric W Colbert

Alex Welch

The direct air capture (DAC) systems and methods efficiently and economically regenerate a desiccant bed without adding any thermal energy and without requiring any pressurization or depressurization of the desiccant reactors. The methods leverage water concentration differences in stream flows, the water concentration profile across a desiccant bed, and, optionally, exothermic water adsorption. These three elements, working in combination, are referred to as 'reverse dry flow regeneration' or a 'reverse dry air swing' regeneration process. Systems and methods for reverse flow regeneration include those for CODAC applications, but they are also applicable to point source carbon capture and other similar technologies that require initial gas dehydration before exposure to a hydrophilic material.

Continuous processes and systems to reduce energy requirements of using zeolites for carbon capture under humid conditions

Solid sorbents, and especially zeolites, are attractive candidates for COdirect air capture (DAC) and point source capture applications because of their potential for high selectivity, fast kinetics, and low energy COcapture cycles. A common issue with solid sorbents, including zeolites, is their low thermal conductivity, which makes them difficult to heat for regeneration without using complex and expensive heat transfer systems. This invention utilizes a modified TVSA process which utilizes the product COgas itself as the heating medium for the adsorbent bed, alone or in conjunction with internal or external heaters. The use of COas a heating medium allows efficient heating of the sorbent bed and enables high purity COproduct.

Temperature vacuum swing adsorption process suited for carbon capture to regenerate sorbents using the CO2 product gas as the heat transfer medium

Growing community of inventors

Los Angeles, CA, United States of America

Dan Fang