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US 2014/0360372 A1Published application
Device and method to sample and enrich impurities in hydrogen
AssigneeUchicago Argonne, LLC
InventorsShabbir Ahmed, Dionissios D. Papadias, Sheldon D.H. Lee, Romesh Kumar
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Abstract
Provided herein are methods and devices to enrich trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentration of impurities so as to allow the detection of the impurities using commonly-available detection methods.
Claims18
A device for increasing the concentration of impurities in a batch of hydrogen gas, the device comprising:
- a) a first container having a first volume adapted to receive the batch at a first pressure, wherein the batch contains hydrogen gas and an unknown quantity of trace impurities;
- b) a second container having a second volume and having a means for retaining the impurities in the second container while removing a portion of the hydrogen gas from the second container, wherein retained hydrogen gas and impurities have a second pressure lower than the first pressure;
- and
- c) a means for measuring the impurities retained in the second container.
1 more element
A device for measuring impurities in a hydrogen stream, the device comprising:
- a) a container for receiving the stream;
- b) an adsorbent positioned within said container, whereby the adsorbent reversibly sequesters the impurities;
- c) a means of egress adapted to allow removal of hydrogen gas from the container while keeping said adsorbent in said container;
- and
- d) a means for removing the impurities from the sorbent;
- and
- e) a second container for receiving and measuring the impurities.
4 more elements
Dependencies are inferred from the claim text.