Method and device for removing heavy metal mercy in fire coal flue gas by carbon powder treated by brominating process

Method and device for removing heavy metal mercy in fire coal flue gas by carbon powder treated by brominating process

  • CN 101,502,737 A
  • Filed: 01/21/2009
  • Published: 08/12/2009
  • Est. Priority Date: 01/21/2009
  • Status: Active Application
First Claim
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1. a carbon dust of handling with bromination removes the method for heavy metal Hg in the coal-fired flue-gas, the steps include:

  • (1) utilize nitrogen as carrier gas, bromine vapor is delivered to the container that fills a certain amount of activated carbon powder, and stir improving the uniformity of bromine load, preparation has the carbon dust that the bromination of good adsorption effect was handled to heavy metal Hg;

    (2) flue gas enters the carbon dust entrance section (3) that bromination was handled through smoke inlet (1), and the carbon dust that the bromination that sprays into the carbon dust entrance of being handled by bromination (2) was handled carries out suction-operated, removes the heavy metal Hg in the coal-fired flue-gas;

    (3) flue gas after handling enters bag filter (7), and the filter bag of making through the carbon dope fiber filters, and can further remove the heavy metal in the flue gas, can remove simultaneously to spray into the carbon dust that the bromination that is used as adsorbent in the flue gas was handled;

    (4) material of collecting in the bag filter ash bucket (6) can separate, and is recycling, improves effective utilization ratio of material.

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