Hydrogen Recovery And Methane Production From Residual Fuels and Biomass
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Oct 28, 2009
filing date -
Oct 28, 2009
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Abandoned
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Abstract
A method of hydrogen and methane recovery from syngas from a gasifier is provided. Then directing a raw syngas stream from an acid gas removal system to a CO and methane removal system. Then returning the CO and methane stream to the gasifier, and exporting the hydrogen stream as a product.This method may include exchanging heat between a raw syngas stream from an acid gas removal system, a separated CO and methane stream, a separated hydrogen stream and a liquid nitrogen stream in a heat exchanger. Then directing the cooled raw syngas stream to a cryogenic Then returning the warmed separated CO and methane stream to the gasifier, and exporting the vaporized nitrogen stream as product.
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