Incremental hydrogen production from an existing steam/natural gas reformer
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United States of America Patent
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Mar 13, 2018
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N/A
app pub date -
May 16, 2016
filing date -
May 15, 2015
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Abstract
In some aspects, a method for incremental hydrogen production includes separating in a first Pressure Swing Absorption (PSA) system an existing reformer synthesis gas product stream into a first hydrogen stream and a first waste stream. The first waste stream is compressed to at least 40 bar to produce a compressed waste stream. Water is removed from the compressed waste stream to produce a dried waste stream. Carbon dioxide is removed from the dried waste stream to produce a remaining waste stream, and the removed carbon dioxide is at least 85% of carbon dioxide in the existing reformer synthesis gas product stream. A second PSA system separates the remaining waste stream into a second hydrogen stream and a second waste stream, and the second hydrogen stream comprises at least 11% of hydrogen from the existing reformer synthesis gas product stream.
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