Acid gas scrubbing apparatus and method

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 53/14 (2006.01) B01D 53/18 (2006.01) B01D 53/34 (2006.01) B01D 53/40 (2006.01) B01D 53/62 (2006.01) C10J 3/00 (2006.01) C10J 3/82 (2006.01) C10K 1/08 (2006.01) C10K 1/12 (2006.01)

Patent

CA 2379709

An apparatus for cleaning an acidic gas which has a gas cleaner (A) wherein a gas to be cleaned containing carbon dioxide and a gas-cleaning liquid containing an alkali agent are contacted to thereby remove an acidic gas in the gas to be cleaned, a regenerator (B) for a cleaning liquid wherein the gas- cleaning liquid is regenerated and cooled by being contacted with a gas for regeneration (35b) having different components from those of the gas-cleaning liquid (40) and the gas to be cleaned (30), and a circulation means which is arranged between the gas cleaner (A) and the regenerator (B) for a cleaning liquid and circulates the cleaning liquid. The apparatus is used for practicing a method which comprises contacting a gas containing carbon dioxide to be cleaned with a gas-cleaning liquid containing an alkali agent, to thereby remove the acidic gas in the gas to be cleaned while cooling the gas.

L'invention concerne un appareil d'épuration d'un gaz acide lequel présente un épurateur (A) de gaz dans lequel un gaz à épurer contenant du dioxyde de carbone et un liquide d'épuration de gaz contenant un agent alcalin sont mis en contact afin d'éliminer ainsi un gaz acide se trouvant dans le gaz à épurer, un régénérateur (B) de liquide d'épuration dans lequel le liquide d'épuration de gaz est régénéré et refroidi par contact avec un gaz de régénération (35b) présentant différents constituants de ceux du liquide (40) d'épuration de gaz et du gaz à épurer (30), ainsi qu'un moyen de circulation lequel est agencé entre l'épurateur (A) de gaz et le régénérateur (B) destiné à un liquide d'épuration et faisant circuler ce dernier. L'appareil est utilisé dans la mise en pratique d'un procédé consistant à mettre un gaz contenant du dioxyde de carbone à épurer en contact avec un liquide d'épuration de gaz contenant un agent alcalin, afin d'éliminer ainsi le gaz acide du gaz à épurer tout en refroidissant le gaz.

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