Alkali bypass

Alkali bypass means a duct between the feed end of the kiln and the preheater tower through which a portion of the kiln exit gas stream is withdrawn and quickly cooled by air or water to avoid excessive buildup of alkali, chloride and/or sulfur on the raw feed. This may also be referred to as the kiln exhaust gas bypass.

Source

40 CFR § 63.1341

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Scoping language

All terms used in this subpart that are not defined in this section have the meaning given to them in the CAA and in subpart A of this part.

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