White Paper | January 14, 2011

Thermo Scientific Sulfur Trioxide CEMS Development

Source: Thermo Fisher Scientific
trioxide

By Jeff Socha and Anand Mamidipudi, Thermo Fisher Scientific

The formation of SO3 in a coal-fired power plant has many undesirable consequences on the plant’s equipment and emissions, presenting the need for a reliable and accurate monitoring method to help minimize adverse effects. High concentrations of SO3 can cause corrosion, fouling and plugging of plant equipment, forcing replacement of hardware and stricter limitations on load. SO3 also reacts with moisture in the stack to form fine droplets of sulfuric acid at the stack exit; these droplets scatter light and cause a visible “blue plume” that leads to an unfavorable perception of the plant’s environmental impact.

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