MX9606215A - Improved wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents. - Google Patents
Improved wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents.Info
- Publication number
- MX9606215A MX9606215A MX9606215A MX9606215A MX9606215A MX 9606215 A MX9606215 A MX 9606215A MX 9606215 A MX9606215 A MX 9606215A MX 9606215 A MX9606215 A MX 9606215A MX 9606215 A MX9606215 A MX 9606215A
- Authority
- MX
- Mexico
- Prior art keywords
- limestone
- hydrocyclone
- reactive solids
- sulfur oxides
- sox
- Prior art date
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
Sulfur oxides (SOx) are scrubbed from combustion effluents with aqueous limestone slurries single-loop, open-tower countercurrent limestone wet scrubbers. Effluent flow rates are greatly increased while L/G values and reaction tank (150) residence times are decreased. Improved entrainment eliminator design, nozzle (112) placement and spacing, and the use of a hydrocyclone (181) to separate and recycle smaller particles of limestone from the byproduct gypsum, facilitate these advantages. Limestone is reduced to very fine particles, e.g. about 8'mu' or less with more than 99 percent of the particle by weight less than 44'mu', and introduced into a scrubbing slurry which is contacted with SOx-laden effluent. Reactivity of the scrubbing slurry is maintained, even at reduced pH, by continuously operating a hydrocyclone to assure a molar ratio of calcium-containing to sulfur-containing compounds of greater than about 1.3 to 1 while keeping both a low chloride and low non-reactive solids content. The hydrocyclone removes large particles of calcium sulfate and provides a recycle stream (184) of fine calcium carbonate and non-reactive solids which is bled off as necessary to maintain both the desired low chloride and non-reactive solids levels.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25716094A | 1994-06-09 | 1994-06-09 | |
US08257698 | 1994-06-09 | ||
US257160 | 1994-06-09 | ||
PCT/US1995/007167 WO1995033547A1 (en) | 1994-06-09 | 1995-06-07 | Improved wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents |
Publications (2)
Publication Number | Publication Date |
---|---|
MXPA96006215A MXPA96006215A (en) | 1998-02-01 |
MX9606215A true MX9606215A (en) | 1998-02-28 |
Family
ID=39165269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9606215A MX9606215A (en) | 1994-06-09 | 1995-06-07 | Improved wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents. |
Country Status (1)
Country | Link |
---|---|
MX (1) | MX9606215A (en) |
-
1995
- 1995-06-07 MX MX9606215A patent/MX9606215A/en not_active Application Discontinuation
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