Process for producing adsorbents for flue gas treatment processes, adsorbents and use of such adsorbents in such flue gas treatment processes

摘要

The present invention relates to a process for producing an adsorbent suitable for use in a circulating dry scrubber unit, the process comprising providing quick lime and water to a hydrate, and soaking the quick lime in the hydrate via a non-wet route. , Collecting the lime-based adsorbent at the outlet of the hydrator. This process comprises adding a silicon-containing compound and / or an aluminum-containing compound and / or at least a first additive containing a silicon- and aluminum-containing compound to 0.2 or less and 0 or less before or during the slaked step. The method further comprises the step of adding at a molar ratio of calcium or silicon or aluminum or a combination thereof provided to the hydrate of 0.02 or more. In some other aspects, the invention relates to adsorbents, premixes, and flue gas treatment processes.