Caustic scrubber system and method for biogas treatment
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United States of America Patent
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Sep 17, 2013
Grant Date -
Apr 18, 2013
app pub date -
Oct 18, 2011
filing date -
Oct 18, 2011
priority date (Note) -
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Abstract
The present invention provides a method and apparatus for the treat en of process gas from an anaerobic digestion system or a landfill gas system. In one embodiment, the system comprises a caustic scrubber including a vertical column having a top and a bottom and including a counter current flow system, wherein a process gas stream flows up vertically through the column in counter current flow to a caustic liquid solution that flows downward through the column. The caustic liquid solution removes at least one acid from the process gas stream, wherein treated gas that is substantially free of acids bubbles out through an opening at the top of the vertical column.
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