recovery method
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
May 29, 2013
filing date -
Aug 8, 2012
priority date (Note) -
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Abstract
A CO2 recovery unit for recovery and removal of CO2 in a CO2-containing flue gas using a CO2-absorbent within a CO2 absorber is provided. The CO2 absorber includes a CO2-absorbing unit for the absorption of CO2 in a CO2-containing flue gas, a main water rinsing unit that is provided on a gas flow downstream side of the CO2-absorbing unit and that uses rinsing water to recover the accompanying CO2-absorbent while cooling decarbonated flue gas, and a preliminary water rinsing unit provided between the CO2-absorbing unit and the main water rinsing unit. A portion of the rinsing water containing the CO2-absorbent that is circulated in the main water rinsing unit is withdrawn and is subjected to preliminary water rinsing in the preliminary water rinsing unit. The preliminary rinsing water is allowed to meet with a CO2-absorbent while allowing the rinsing water to directly flow down on the CO2-absorbing unit side.
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