Improved Burner Designs for Optimized Lime Recovery Kiln Performance on Natural Gas Fuel, 19PEERS

Increasing production and reducing operating costs is a constant battle for the operators of lime recovery kilns in pulp mills. Operating costs are mainly driven by the underlying cost of fuel which vary significantly over long periods of time. In the past 20 years oil, petcoke, and more recently natural gas have been the most economic fuels. Each fuel however has an effect on the kiln production due to the nature of flame generated by the chemical reaction. This is most noticeable with the conversion to natural gas which produces a flame which is less radiant than petcoke and oil. KFS has developed a kiln burner design to minimize the impact on the reduced radiance from the natural gas flame. This paper compares kiln performance between traditional kiln burner designs and the new burner development using site data collected following conversion projects. 

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