How it works
The hydrated lime powder absorbs SO2.
FLSmidth provides either a pneumatic solution, or a mechanical bin that meters hydrated lime powder into the raw material via a dosing system connected to the kiln feed.
The HLI system is a cost-effective solution for handling periodic fluctuations in SO2 emission levels to remain within legal compliance limits. The hydrated lime can absorb up to 60% of SO2; for higher reduction rates – up to 90% – FLSmidth's Gas Suspension Absorber (GSA) must be used.