Method for removal of sulfur dioxide
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United States of America Patent
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Aug 1, 2000
Issued Date -
N/A
app pub date -
Jan 13, 1998
filing date -
Mar 24, 1995
priority date (Note) -
Expired
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Abstract
A method for removing sulfur dioxide from gas streams, comprising contacting the gas stream with an aqueous absorption liquid, transferring the liquid to another location, then mildly heating the liquid to recover the sulfur dioxide. This method allows a removal of 99.9% of the sulfur dioxide, the recovery of very pure sulfur dioxide, is resistant to upsets due to variations in the gas stream, and is cost effective.
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