Tri-Mer Air Pollution Control Systems
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Tri-Mer - Mercury Emission Control System
To date, coal-fired power plants have become the leading contributor to widespread, global mercury pollution. As a result, federal emission standards are in place to regulate the volume of pollution a plant is able to emit. Tri-Mer’s UltraCat system is compatible with standard mercury emission control techniques. Control of mercury is notoriously difficult: each instance is analyzed individually, and customized solutions are engineered. A few general observations can be offered, however.
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- The catalytic filters can handle very high particulate loads while maintaining exceptionally low outlet levels.
- Just as the addition of dry sorbents for the removal of acid gases is effective, so is the addition of powdered activated carbon (PAC) for mercury.
- In general, regular PAC becomes less effective with temperature, topping out around 400°F. The chemical composition of the pollutant gas plays a major role; hence, the difficulty of blanket statements.
- At higher temperatures, brominated PAC is required. According to the manufacturers of brominated products, temperatures of 500°F to 800°F are acceptable.
- Significant levels of mercury removal have also been achieved with injected powdered trona.
- Many new sorbents for mercury removal have been introduced in recent years; some of these appear very promising.