Processing process for fermentation waste liquid of lysine

Processing process for fermentation waste liquid of lysine

  • CN 101,337,729 B
  • Filed: 07/03/2007
  • Issued: 01/16/2013
  • Est. Priority Date: 07/03/2007
  • Status: Active Grant
First Claim
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1. the treatment process of a fermentation waste liquid of lysine, the method comprise fermentation waste liquid of lysine are prepared ammonium sulfate crystallization and amino-acid compound fertilizer through concentrating under reduced pressure, ammonium sulfate crystallization, centrifugation and spray granulating;

  • Then the waste water and the waste gas that above processing step are obtained are processed;

    The method that wherein prepares ammonium sulfate crystallization and amino-acid compound fertilizer may further comprise the steps;

    (1) concentrating under reduced pressure;

    it is more than 20Be °

    that fermentation waste liquid of lysine is evaporated to liquid waste concentration, and the water of condensation that produces enters the aerobic treatment system and processes;

    (2) ammonium sulfate crystallization;

    the waste liquid spontaneous nucleation under 60~

    80 ℃

    of conditions after concentrated, separate out ammonium sulfate crystallization, centrifugation obtains ammonia sulfate crystal and waste water;

    (3) spray granulating;

    the waste water that will separate behind the ammonium sulfate carries out spray granulating, prepares granular, as to contain multiple amino acids composite fertilizer;

    The pressurized air of wherein said spray granulating process using 0.3~

    0.5MPa is with the waste water atomisation;

    it is adhered on the small-particle that forms the material curtain in the tablets press;

    mix in tablets press with the hot blast in the hotblast stove;

    adopt 300~

    500 ℃

    high temperature wink-dry fluid film, form the granular compound fertilizer that contains multiple amino acids of diameter 1~

    4mm.

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