Abstract
This investigation studied the effects of injecting dry hydrated lime into flue gas to reduce sulfur trioxide (SO[sub 3]) concentrations and consequently stack opacity at the University of Missouri-Columbia power plant. The opacity was due to sulfuric acid mist forming at the stack from high SO[sub 3] concentrations. As a result of light scattering by the mist, a visible plume leaves the stack. Therefore, reducing high concentrations of SO[sub 2] reduces the sulfuric acid mist and consequently the opacity. To reduce SO[sub 3] concentrations, dry hydrated lime is periodically injected into the flue gas upstream of a baghouse and downstream of an induced draft fan. The hydrated lime is transported downstream by the flue gas and deposited on the filter bags in the baghouse forming a filter cake. The reaction between the SO[sub 3] and the hydrated lime takes place on the filter bags. The hydrated lime injection system has resulted in at least 95% reduction in the SO[sub 3] concentration and has reduced the opacity to acceptable limits. Low capital equipment requirements, low operating cost, and increasing bag life make the system very attractive to industries with similar problems. 10 refs., 2 figs., 5 tabs.
Wolf, D E;
Seaba, J P
[1]
- University of Missouri-Columbia, Columbia, MO (United States). Mechanical and Aerospace Engineering Dept.
Citation Formats
Wolf, D E, and Seaba, J P.
Opacity reduction using dry hydrated lime injection.
United States: N. p.,
1994.
Web.
Wolf, D E, & Seaba, J P.
Opacity reduction using dry hydrated lime injection.
United States.
Wolf, D E, and Seaba, J P.
1994.
"Opacity reduction using dry hydrated lime injection."
United States.
@misc{etde_6631676,
title = {Opacity reduction using dry hydrated lime injection}
author = {Wolf, D E, and Seaba, J P}
abstractNote = {This investigation studied the effects of injecting dry hydrated lime into flue gas to reduce sulfur trioxide (SO[sub 3]) concentrations and consequently stack opacity at the University of Missouri-Columbia power plant. The opacity was due to sulfuric acid mist forming at the stack from high SO[sub 3] concentrations. As a result of light scattering by the mist, a visible plume leaves the stack. Therefore, reducing high concentrations of SO[sub 2] reduces the sulfuric acid mist and consequently the opacity. To reduce SO[sub 3] concentrations, dry hydrated lime is periodically injected into the flue gas upstream of a baghouse and downstream of an induced draft fan. The hydrated lime is transported downstream by the flue gas and deposited on the filter bags in the baghouse forming a filter cake. The reaction between the SO[sub 3] and the hydrated lime takes place on the filter bags. The hydrated lime injection system has resulted in at least 95% reduction in the SO[sub 3] concentration and has reduced the opacity to acceptable limits. Low capital equipment requirements, low operating cost, and increasing bag life make the system very attractive to industries with similar problems. 10 refs., 2 figs., 5 tabs.}
journal = []
volume = {44:7}
journal type = {AC}
place = {United States}
year = {1994}
month = {Jul}
}
title = {Opacity reduction using dry hydrated lime injection}
author = {Wolf, D E, and Seaba, J P}
abstractNote = {This investigation studied the effects of injecting dry hydrated lime into flue gas to reduce sulfur trioxide (SO[sub 3]) concentrations and consequently stack opacity at the University of Missouri-Columbia power plant. The opacity was due to sulfuric acid mist forming at the stack from high SO[sub 3] concentrations. As a result of light scattering by the mist, a visible plume leaves the stack. Therefore, reducing high concentrations of SO[sub 2] reduces the sulfuric acid mist and consequently the opacity. To reduce SO[sub 3] concentrations, dry hydrated lime is periodically injected into the flue gas upstream of a baghouse and downstream of an induced draft fan. The hydrated lime is transported downstream by the flue gas and deposited on the filter bags in the baghouse forming a filter cake. The reaction between the SO[sub 3] and the hydrated lime takes place on the filter bags. The hydrated lime injection system has resulted in at least 95% reduction in the SO[sub 3] concentration and has reduced the opacity to acceptable limits. Low capital equipment requirements, low operating cost, and increasing bag life make the system very attractive to industries with similar problems. 10 refs., 2 figs., 5 tabs.}
journal = []
volume = {44:7}
journal type = {AC}
place = {United States}
year = {1994}
month = {Jul}
}