Zistersdorf/Austria
In certain cases, especially for smaller plants and for optimised investments, dry sorption process based on lime or sodium bicarbonate is an interesting alternative to the CFB based flue gas cleaning technology.
The process features a reactor, where the dry, powdered additive is injected and well mixed with the flue gas and a downstream installed fabric filter.
The sodium bicarbonate process is used wherever residue quantities must be kept as small as possible. Due to the very high reactivity of sodium bicarbonate, only a small amount of it is required. The process is virtually independent of temperature and so offers maximum energy recovery.