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Alkaline sorbent injection for mercury control

  • US 20020102189A1
  • Filed: 11/16/2001
  • Published: 08/01/2002
  • Est. Priority Date: 12/07/1998
  • Status: Active Grant
First Claim
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1. A mercury removal system for removing mercury from a flue gas generated in a combustion system having a boiler and a stack, comprising:

  • particulate removal means for separating and removing particulate matter containing mercury from the flue gas, the particulate removal means located between the boiler and the stack; and

    sorbent injection means for providing an alkaline sorbent in one of powdered and slurried form to at least one location upstream of the stack, the alkaline sorbent containing at least one element selected from the alkaline earth elements, the sorbent further being provided in a stoichiometric molar ratio of alkaline earth to sulfur in a range of about 0.001 mole alkaline earth/mole sulfur to about 1.0 mole alkaline earth/mole sulfur.

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