Method and system for reducing lime consumption in dry flue gas desulfurization systems
US8268276B2 · kind B2 · utility
4Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2010 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Oct 6, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2258/0283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method for reducing lime consumption in DFGD systems, a slaker is provided wherein lime and water is introduced to produce a slaked lime slurry. The slurry is introduced into a spray dryer wherein the slurry is atomized. A flue gas stream is also introduced into the spray dryer and reacts with the atomized slurry, causing calcium sulfate and sulfite, as well as unreacted lime particulate to form. A portion of the particulate is filtered and sent back in a substantially dry form to the slaker to form part of the slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.