| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for removing an amino acid-iron complex salt from an amine fluid which can effectively remove an amino-iron complex salt from the amine fluid including the amino acid-iron complex salt by a simply device and operation, thereby preventing a filler from clogging due to the deposition of an iron carbonate by decomposing the amino acid iron complex salt, and can prevent iron from corroding by a freed amino acid. <P>SOLUTION: In the method comprising bringing an acidic gas into contact with an amine fluid in an absorption column 1, subjecting the formed rich amine fluid to primary regeneration in a primary regeneration column 2, and passing part of the formed lean amine fluid through a cation-exchange column 11 and an anion-exchange column 12 to conduct secondary regeneration, the amine fluid including an amino acid-iron complex salt is passed through a cation-exchange resin layer 13 to remove free cations and furthermore passed through an anion-exchange resin layer 14 to remove the amino acid-iron complex salt and an acid component anion. <P>COPYRIGHT: (C)2011,JPO&INPIT |
