SO{sub 3}'s impacts on plant O & M: part 1

Journal Article · Sun Oct 15 00:00:00 EDT 2006 · Power (New York)

OSTI ID:20823935

Moser, R E ^[1]

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1. Codan Development LLC (United States)

The visible consequences of sulfuric acid aerosol emissions, opaque stack emissions called 'blue plumes', are merely the tip of an iceberg. In sufficient concentration, SO{sub 3} also can increase corrosion and fouling of equipment and components downstream of the furnace while decreasing their efficiency and penalizing overall plant heat rate. This article, the first in a three part series, details the negative impacts of SO{sub 3} on operations and maintenance of back-end plant equipment. These include: reduction of unit heat rate and increased corrosion of downstream equipment due to the raising of dew point by SO{sub 3}; fouling of air heaters and SCR catalysts due to the reaction of SO{sub 3} with ammonia and competition of SO{sub 3} with mercury for adsorption sites on carbon particles, reducing the effectiveness of mercury emissions control. Part II will explain and quantify the potential benefits of limiting the concentration of SO{sub 3} in flue gas to 3ppm at the entrance to the air heater. Part III will describe the characteristics of an optimal SO{sub 3} removal technology and present the technical details and operating experience of one patented process that has worked successfully at a half dozen plants for up to three years. 1 ref., 2 figs.

• OSTI ID: 20823935
• Journal Information: Power (New York), Vol. 149, Issue 8; Other Information: [e-mail]; ISSN 0032-5929
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
REMOVAL
FOSSIL-FUEL POWER PLANTS
AIR POLLUTION CONTROL
SULFUR TRIOXIDE
SELECTIVE CATALYTIC REDUCTION
FLUE GAS
CORROSION
FOULING
POLLUTION CONTROL EQUIPMENT
FABRIC FILTERS
MERCURY
FLY ASH
CORROSIVE EFFECTS
AIR HEATERS
SULFURIC ACID
DEW POINT
AMMONIUM SULFATES
ACID SULFATES
ADSORPTION
HEAT RATE