Solutions for Power Plants

Microwave Carbon Burnout
Reliable, cost effective beneficiation is the key to ash utilization and the avoidance of landfill. Utilities have realized that this transformation from a waste material requiring costly disposal into a value added product translates directly into added profitability.

Dominion offers not only the superior technical and economic performance of its MCB process to produce a consistent, high quality product but also the marketing experience to distribute the product into the concrete and other industries.

MCB is a clean process which requires no auxiliary fuel and generates no waste product stream requiring disposal. MCB also allows the utility to further reduce its environmental footprint by being capable of processing conditioned ash directly from landfill.

Mercury Containment
Mercury emissions from coal fired utility plants are becoming an extremely important environmental concern. This concern translates to the ash industry since some of the mercury liberated in the coal combustion process adheres to the fly ash. Any ash beneficiation process must not aggravate this situation by releasing mercury freely into the environment. Extensive tests with MCB indicate that the mercury is effectively adsorbed onto the ash and becomes fixed in the cement product when the ash is used for Portland replacement.

Dominion has also developed a microwave pyrolysis process for “unloading” mercury sorbents such as activated carbon, thus recycling the carbon for reuse and rendering the mercury into a small volume for containment. Dominion is working in partnership with ADA/ES, a Colorado environmental technology company, in demonstrating this technology as part of a US Department of Energy Clean Coal Technology project at a Wisconsin utility.