PROCESS FOR THE RECOVERY OF HCL FROM A DILUTE SOLUTION THEREOF AND EXTRACTANT COMPOSITION FOR USE THEREIN
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United States of America Patent
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Issued Date -
Feb 3, 2011
app pub date -
Apr 7, 2009
filing date -
Apr 8, 2008
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Abandoned
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Abstract
There is provided a process for the recovery of HCI from a dilute solution thereof, comprising bringing a dilute aqueous HCI solution into contact with a substantially water-immiscible extractant, the extractant comprising an oil soluble amine, which amine is substantially water insoluble both in free and in salt form; an oil soluble weak organic acid having a pKa above 3, which acid is substantially water insoluble both in free and in salt form; and a solvent for the amine and organic acid; whereupon HCI selectively transfers to the extractant to form an HCI-carrying extractant, and treating the HCI-carrying extractant to obtain gaseous HCI. Also provided is the extractant composition.
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