Multi-stage scrubbing system and method for ethanol vent streams
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United States of America Patent
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Aug 20, 2013
Grant Date -
Nov 17, 2011
app pub date -
Aug 27, 2010
filing date -
Aug 28, 2009
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Abstract
A multi-stage scrubbing system comprises a pre-scrubber system structured to receive a vent stream therein and pre-scrub the vent stream with a pre-scrubber fluid. The pre-scrubber system includes a first outlet for discharging a pre-scrubbed vent stream and a second outlet for discharging a discharge stream of pre-scrubber fluid. A main scrubber system is fluidly coupled to the first outlet of the pre-scrubber system for receiving and further scrubbing the pre-scrubbed vent stream.
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