Using Wood Powder as Fuel in Lime Kilns, 2018 PEERS

The lime kiln is today the only major consumer of fossil fuel in a modern pulp mill. There are several green or CO₂ neutral fuel alternatives to fossil fuel that can be used but it is important to acknowledge that replacing the kiln fuel may have an impact on the kiln design and operation.This paper will discuss the use of wood powder as a replacement lime kiln fuel. Valmet has for the last decade installed systems where wood powder has replaced oil or natural gas as the main fuel for the lime kiln.

The paper will discuss the factors that will have to be considered when evaluating using wood powder as kiln fuel and the lessons learned from operating with wood powder.

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