Pretreatment method for chelate resin having pyridine ring used for collecting catalyst in aromatic carboxylic acid production process

Pretreatment method for chelate resin having pyridine ring used for collecting catalyst in aromatic carboxylic acid production process

  • CN 102,762,303 A
  • Filed: 02/18/2011
  • Published: 10/31/2012
  • Est. Priority Date: 02/19/2010
  • Status: Active Application
First Claim
Patent Images

1. preprocess method that contains the pyridine ring chelating resin;

  • It is characterized in that;

    Its for use when in the manufacturing process of aromatic carboxylic acid class, reclaiming liquid-phase oxidation catalyst contain the pyridine ring chelating resin and carry out preliminary treatment the time, inhibition will contain water, and to contain as this of solvent that pyridine ring chelating resin processes with acetic acid be the Br of solvent -Take place during type, this contains the preprocess method that the pyridine ring chelating resin of the volumetric expansion and the heating of pyridine ring chelating resin;

    Initial use HBr content is that 0.05 ~ 10 quality % and acetic acid containing ratio are the hydrobromic acid aqueous solution of 0 ~ 30 quality %, this is contained the pyridine ring chelating resin process Br -Type then contacts with acetate solvate.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×