Systems and methods for reliable feedstock delivery at variable delivery rates
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United States of America Patent
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Sep 11, 2012
Grant Date -
Jun 18, 2009
app pub date -
Oct 21, 2008
filing date -
Dec 17, 2007
priority date (Note) -
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Abstract
Hydrogen-producing fuel processing assemblies and methods for delivering feedstock to a hydrogen-producing region of a hydrogen-producing fuel processing assembly. In some embodiments, the fuel processing assemblies include a feedstock delivery system that includes a pump assembly and a stall prevention mechanism that is adapted to reduce pressure in an outlet conduit during periods in which the pump assembly is not emitting a liquid outlet stream within or above a hydrogen-producing pressure range. In some embodiments, pressure in the outlet conduit is isolated from pressure in the hydrogen-producing region of the fuel processing assembly and is reduced during periods in which a liquid stream is not being pumped within or above a hydrogen-producing pressure range.
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