Mercury Removal
Amended Silicates is injected into coal combustion gases upstream of the Electrostatic Precipitator. Amended Silicates interacts with the mercury, chemically modifying it into an inert and insoluble state. Injection rates are comparable to Powdered Activated Carbon but will vary from plant to plant based upon variables such as coal type, LOI and baghouse temperature.
Balance of Plant Impacts
As a non-carbon, silicate based reagent, Amended Silicates has similar physical and chemical properties to fly ash itself. ESP inspection after a month-long trial of Amended Silicates showed no evidence of buildup, erosion or any other potential impacts when using Amended Silicates. Additionally, use of Amended Silicates showed no increase in opacity.
Preserves Fly Ash Value
Amended Silicates is
100% compatible with concrete, making it an environmentally and fiscally responsible choice for mercury control. Use of Amended Silicates could save a 500 MW power plant over $2 million annually in combined preservation of fly ash value and avoidance of landfill costs.
Superior Handling Characteristics
As a non-carbon based product, Amended Silicates is non-flammable and non-abrasive – important considerations when choosing a mercury emission control technology. Additionally, Amended Silicates has similar physical and chemical properties to fly ash and has not been observed to produce any noxious or corrosive off-gases. These attributes make Amended Silicates easy to store and handle.
Leachability
Tests have shown that mercury contained within the Amended Silicates-fly ash mixture is very stable and able to pass stringent
EPA leachability standards.
