Division 21
United Kingdom
In order to reduce/minimise the emissions of SOx from the flue-gases of kiln firing and/or preheating/precalcining processes, BAT is to use one of the following techniques:
| A description of the techniques is provided in Section 1.5.3 | ||
| Techniquef1 | Applicability | |
|---|---|---|
| a | Absorbent addition | Absorbent addition is, in principle, applicable to all kiln systems, although it is mostly used in suspension preheaters. Lime addition to the kiln feed reduces the quality of the granules/nodules and causes flow problems in Lepol kilns. For preheater kilns it has been found that direct injection of slaked lime into the flue-gas is less efficient than adding slaked lime to the kiln feed |
| b | Wet scrubber | Applicable to all cement kiln types with appropriate (sufficient) SO2 levels for manufacturing the gypsum |
Annotations
Footnotes
- f1
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A description of the techniques is provided in Section 1.5.3