Increasing Lime Production while Decreasing Kiln Pluggage through the Installation of the First LimeFlashTM Lime Kiln Feed System in North America, 2011 PEERS Conference

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The Evadale, TX mill recently engaged in a major lime kiln and recausticizing upgrade. The centerpiece of the project was to upgrade the existing lime kiln feed system to a new LimeFlashTM feed system supplied by Andritz. The feed system in Evadale, is the first installation in North America and the second installation in the world. The feed system increased the capacity of the LMD fed kiln from 350 TPD of lime product to 480 TPD of kiln product with less than 3% carbonate. The system mixes hot flue gasses with the lime mud before the gas enters the feed end housing, which allows the kiln to operate with a higher feed end temperature without plugging and lime splitting. At start-up and low capacity situations lime mud is fed directly into the kiln rotating part which eliminates potential plugging problems. Start-up and operational experience, along with selected environmental performance is reviewed.