Control of mercury and other elemental metal emissions using reaction stabilization device

A method of removing metals from flue gas produced by combustion devices burning fuel containing those metals, the flue gas containing particles and passing from a combustion zone in which the temperature exceeds 2600° F., through a first temperature zone in which the temperatures range from 1750° F. to 2100° F., through a second temperature zone in which the temperatures range from 900° F. to 1450° F. and through a particle removal device, the method comprising:

• introducing a material into the flue gas that controls free radical Cl when the flue gas passes through the second temperature zone in sufficient amounts to oxidize the metals within the flue gas;
• thereafter passing the flue gas through a reaction zone stabilizer, the reaction zone stabilizer positioned within the furnace at a location where the flue gas has received the introduced material and the flue gas is at a temperature in the range of from 900° F. to 1450° F.;
• directing the flue gas to the particle removal device;
• and
• monitoring the flue gas after the flue has passed through the particle removal device to determine whether the metals are present within a desired range and thereby confirm that the material has been introduced in sufficient amounts to oxidize the metals within the flue gas.

A method of removing metals from flue gas produced by combustion devices burning fuel containing metals, the flue gas containing particles and passing from a combustion zone in which the temperature exceeds 2600° F., through a first temperature zone in which the temperature ranges from 1750° F. to 2100° F., through a second temperature zone in which the temperatures range from 900° F. to 1,450° F. and through a particle removal device, the method comprising:

• introducing a material into the flue gas that affects the flue gas in a manner to optimize Cl oxidation of elemental metals in the second temperature zone;
• thereafter passing the flue gas through a reaction zone stabilizer, the reaction zone stabilizer positioned within the furnace at a location where the flue gas has received the introduced material and the flue gas is at a temperature in the range of from 900° F. to 1450° F.;
• directing the flue gas to the particle removal device;
• and
• monitoring the flue gas after the flue has passed through the particle removal device to determine whether the elemental metals are present within a desired range and thereby confirm that the material has been introduced in sufficient amounts to optimize Cl oxidation of the elemental metals in the second temperature zone.