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Sorbents and methods for the removal of mercury from combustion gases

  • US 6,953,494 B2
  • Filed: 05/06/2003
  • Issued: 10/11/2005
  • Est. Priority Date: 05/06/2002
  • Status: Expired due to Term
First Claim
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1. A method for removing mercury and mercury-containing compounds from a combustion gas in an exhaust gas system, comprising the steps of:

  • providing a mercury sorbent that has been prepared by treating a carbonaceous substrate with an effective amount of a bromine-containing gas for a sufficient time to increase the ability of the carbonaceous substrate to adsorb mercury and mercury-containing compounds;

    injecting the mercury sorbent into a stream of the mercury-containing combustion gas for a sufficient time to allow an effective amount of the mercury and mercury-containing compounds in the combustion gas to adsorb onto the mercury sorbent; and

    collecting and removing the mercury sorbent from the combustion gas stream.

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