Ammonia-adding system for ammonia-based desulfurization device

  • US 10,099,170 B1
  • Filed: 07/27/2017
  • Issued: 10/16/2018
  • Est. Priority Date: 06/14/2017
  • Status: Active Grant
First Claim
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1. A method for adding ammonia to an absorption solution in a flue-gas desulfurization system, the method comprising:

  • adding ammonia to the absorption solution at a base rate that is proportional to;

    a) a target sulfur dioxide removal rate; and

    b) a correction coefficient that includes a ratio of cumulative ammonia added to cumulative sulfur dioxide removed; and

    ,then, controlling ammonia addition to the absorption solution to a second rate based on a measured output sulfur dioxide characteristic.

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