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Purificating agent for flue gas and incinerated ash and purificating method using the same

  • US 6,652,821 B1
  • Filed: 10/18/2000
  • Issued: 11/25/2003
  • Est. Priority Date: 02/18/1999
  • Status: Expired due to Fees
First Claim
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1. An agent for purifying flue gas and incinerated ash comprising:

  • a) one or more salts selected from the group consisting of alkali metal silicates;

    b) hydrogencarbonate ion;

    c) fluoride ion, d) less than about 20% by weight water-soluble alcohols or derivatives thereof, and water or water soluble solvents.

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