Flue gas desulfurization
Flue Gas Desulfurization in Large Combustion PlantsApproximately 95 % of the large combustion plants desulfurate their waste gases using lime products. For this process, fine ground lime (CaO), hydrated lime (Ca(OH)2) and limestone meal (CaCO3) are used as basic sorbents. The use of calcium carbonate from chalk from the Dammann Group ist state-of-the-art, because the high reactivity saves investment and operating material costs.
These are the advantages of chalk products:
- Decrease of the LIG-ratio
- Increase of the desulfurization degree (DSD)
- Low stoichiometry
- Low remaining calciumcarbonate contents in gypsum
- Improvement of the dewatering properties of gypsum
- Increase of the brightness of gypsum
- Decrease of the COD-content, reduction of waste water disposal levies
- Increase of the buffer capacity in the washing system (removal of e. g. formic acid)
The products Reasorb 70, Reasorb 80 and filtercake can be used.
