Enhanced mercury control in coal-fired power plants

  • US 6,808,692 B2
  • Filed: 02/14/2002
  • Issued: 10/26/2004
  • Est. Priority Date: 02/14/2002
  • Status: Active Grant
First Claim
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1. A method of treating coal combustion flue gas containing mercury, comprising:

  • injecting a member selected from the group consisting of molecular halogen and a thermolabile molecular halogen precursor into said flue gas to effect oxidation of elemental mercury to a mercuric halide and providing alkaline solid particles in said flue gas ahead of a particulate collection device, in order to adsorb at least a portion of said mercuric halide.

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