Two-stage pulverized coal combustion method

Two-stage pulverized coal combustion method

  • CN 103,615,718 A
  • Filed: 12/13/2013
  • Published: 03/05/2014
  • Est. Priority Date: 12/13/2013
  • Status: Active Application
First Claim
Patent Images

1. a two-period form coal dust combustion method, it comprises the steps:

  • Step

         1);

    coal dust and air are sprayed into vaporizer (1) by the mass ratio of 1;

    0.5~

    1;

    4, gasification reaction temperature in vaporizer (1) is controlled between 800~

    1700 ℃

    , 30~

    80% coal dust gasification is generated to the mixture of high temperature rough gas and semicoke in vaporizer, and discharge from vaporizer (1) exit, in this mixture of vaporizer exit, the shared mass percent of high temperature rough gas is 50~

    95%, and the temperature of mixture is between 800~

    1300 ℃

    ;

    Step

         2);

    the combustion air nozzle (4) by burner (3) is joined combustion air, and the mixture of high temperature rough gas and semicoke and combustion air carry out completing combustion in burner (3);

    The consumption of combustion air deducts according to the required air quantity of the whole coal dusts of completing combustion the air quantity spraying in vaporizer (1) and determines.

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