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ABB Environmental Systems, Div. of ABB Flakt, Inc. Patents |
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Assignee: ABB Environmental Systems, Div. of ABB Flakt, Inc.
Address: Knoxville, TN
No. of patents: 4
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5820831 |
Method and apparatus for preparing calcium carbonate for scrubbing sulfur oxides from combustion |
October 13, 1998 |
| Limestone is dried for grinding to very fine particles e.g., about 8.mu. or less with more than 99% of the particle by weight less than 44.mu., by utilizing waste heat from the flue gas from a large combustor. The finely-divided calcium carbonate is then introduced dry into a scrubbing |
| 5662721 |
Entrainment separator for high velocity gases |
September 2, 1997 |
| Sulfur oxides (SO.sub.x) are scrubbed from combustion effluents with aqueous limestone slurries with greater efficiency due to the use of an improved entrainment separator. In the preferred embodiment of a single-loop, counter-current limestone wet scrubber operating at bulk gas flow |
| 5575984 |
Method for preparing calcium carbonate for scrubbing sulfur oxides from combustion effluents |
November 19, 1996 |
| Limestone is dried for grinding to very fine particles e.g., about 8.mu. or less with more than 99% of the particle by weight less than 44.mu., by utilizing waste heat from the flue gas from a large combustor. The finely-divided calcium carbonate is then introduced dry into a scrubbing |
| 5486341 |
Entrainment separator for high velocity gases |
January 23, 1996 |
| Sulfur oxides (SO.sub.x) are scrubbed from combustion effluents with aqueous limestone slurries with greater efficiency due to the use of an improved entrainment separator. In the preferred embodiment of a single-loop, counter-current limestone wet scrubber operating at bulk gas flow |
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