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Constant pressure high throughput membrane permeation testing system

United States Patent

September 2, 2014
View the Complete Patent at the US Patent & Trademark Office
National Energy Technology Laboratory - Visit the Technology Transfer Website
The disclosure relates to a membrane testing system for individual evaluation of a plurality of planar membranes subjected to a feed gas on one side and a sweep gas on a second side. The membrane testing system provides a pressurized flow of a feed and sweep gas to each membrane testing cell in a plurality of membrane testing cells while a stream of retentate gas from each membrane testing cell is ported by a retentate multiport valve for sampling or venting, and a stream of permeate gas from each membrane testing cell is ported by a permeate multiport valve for sampling or venting. Back pressure regulators and mass flow controllers act to maintain substantially equivalent gas pressures and flow rates on each side of the planar membrane throughout a sampling cycle. A digital controller may be utilized to position the retentate and permeate multiport valves cyclically, allowing for gas sampling of different membrane cells over an extended period of time.
Albenze; Erik J. (Bethel Park, PA), Hopkinson; David P. (Morgantown, WV), Luebke; David R. (Bethel Park, PA)
U.S. Department of Energy (Washington, DC)
13/ 629,733
September 28, 2012
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to the employer-employee relationship of the Government to the inventors as U.S. Department of Energy employees and site-support contractors at the National Energy Technology Laboratory.