The system that amino acid is continuously isolated and purified from the aqueous solution of the alkali metal salt of amino acid

The system that amino acid is continuously isolated and purified from the aqueous solution of the alkali metal salt of amino acid

  • CN 103,964,989 B
  • Filed: 05/29/2014
  • Issued: 12/15/2017
  • Est. Priority Date: 01/27/2014
  • Status: Active Grant
First Claim
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1. continuously isolating and purifying the system of amino acid and iminodicarboxylic acid from the aqueous solution of the alkali metal salt of amino acid, it is specialSign is that described system comprises at least the following devices being sequentially connected:

  • One-level continuous ion exchange unit (1), electrodialysis dressPut (2) and two level continuous ion exchange unit (3);

    In the one-level continuous ion exchange unit (1) filled with faintly acid sun fromSub-exchange resin;

    Storng-acid cation exchange resin is filled with the two level continuous ion exchange unit (3);

    One cascadeContinuous ion interchange unit is the aqueous solution progress continuous ionic exchange reaction for the alkali metal salt containing amino acid, and electrodialysis fillsIt is for the desalination from the aqueous solution of thick amino acid to put, and two level continuous ion exchange unit is the alkali gold for iminodicarboxylic acidBelong to acid saline solution and carry out continuous ionic exchange reaction;

    It is additionally provided with before described one-level continuous ion exchange unit (1) for the water-soluble of the alkali metal salt containing amino acidThe bleaching tower (4) that liquid is decolourized, described bleaching tower (4) are connected with one-level continuous ion exchange unit (1);

    Described system also includes Freamine Ⅲ

    reserve pool (7), described Freamine Ⅲ

    reserve pool (7) respectively with a cascadeContinuous ion interchange unit (1), concentration kettle I (51) are connected with bleaching tower (4), one-level continuous ion exchange unit (1) carry out fromAmino acid crystalline mother solution deposit after the thick Freamine Ⅲ

    in part and the concentration tower concentration that son flows out after exchanging is in Freamine Ⅲ

    In reserve pool (7), for adjusting the pH value of solution in bleaching tower (4).

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