Method to Liquefy Ammonia Gas
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United States of America Patent
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Issued Date -
Oct 28, 2010
app pub date -
Apr 23, 2010
filing date -
Apr 24, 2009
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Abstract
An ammonia expander in a liquefaction process, the ammonia expander reducing the resulting vapor from the liquid ammonia expansion and increasing the percentage of both the feed gas input and the process output. Embodiments of the ammonia expander comprise a radial inflow reaction turbine with an induction generator mounted on a generator shaft and a turbine mounted on a turbine shaft, the turbine submerged in the liquid ammonia. The turbine extracts torque from the liquid ammonia as it flows through the turbine. The torque from the turbine is transferred from the turbine shaft to the generator shaft, allowing for energy to be extracted from the liquid ammonia stream.
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