Method for treating sulfur dioxide smoke by using steel slag

Method for treating sulfur dioxide smoke by using steel slag

  • CN 102,101,005 A
  • Filed: 01/26/2011
  • Published: 06/22/2011
  • Est. Priority Date: 01/26/2011
  • Status: Active Application
First Claim
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1. method of utilizing slag to administer sulfur dioxide flue gas, by the desulfurizing agent preparation, smoke absorption, in and oxidation, precipitation deslagging operation is formed, and it is characterized in that:

  • (1) preparation desulfurizing agent;

    water flushing slag, the flushing water circulation flushing is provided with ion concentration gauge and acid-base value PH analyzer on slag washing liquid storage tank export pipeline, reach certain requirement until wherein ion concentration and pH value, becomes desulfurizing agent;

    (2) absorb flue gas;

    flue gas is sent into the absorption tower, and with being pumped to the absorption tower, through the nozzle ejection drop that nebulizes, the washing sulfur in smoke becomes the sulphite slurries with the slag flushing water, and slurries return nozzle again by circulating pump, spray repeatedly;

    (3) in and oxidation;

    the part slurries are delivered to mixing channel when acid-base value PH analyzer records data and reaches setting value, drop into lime stone, air blast, and with the lime stone neutralization, forced oxidation becomes calcium sulfite and calcium sulfate, delivers to sedimentation basin then;

    (4) precipitation deslagging;

    , discharge solid phase calcium sulfite and calcium sulfate (gypsum) through sedimentation;

    Supernatant returns the usefulness of making the flushing slag;

    (5) top, absorption tower is discharged and is purified flue gas.

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