Analysis of TRS emissions from recovery boilers

This paper analyses the influence of operating variables on flue gas emissions containing total reduced sulfur (TRS) from a dissolving tank and a recovery boiler. Two pulp mills in Chile provided data to allow this study to be conducted. First, at Lincacel plant, emissions from the dissolving tank vent gas scrubber were studied. Then at the Valdivia plant, the influence of different operating variables on TRS emissions from the recovery boiler were analysed using a multivariate statistical analysis for TRS emissions. In this analysis it was observed that variables affecting the boiler furnace temperature were strongly correlated with changes in the TRS emissions.