Concentrator: The evaporate station using five four effect evaporation body, every-effect evaporation area of 550m*m,effective total heat transfer area of 2200m*m,the former four switchable between efficiency washing Design parameters: Deal with the black liquor treatment volume 1000m*m*m/day Dilute black liquor temperature 70°C Dilute black liquor concentration 9% Dilute black fiber content less than 50mg/L The volume of dilute black liquor 42t/h The effectsolution concentration 51% The effectliquid 7.4 t/h Efficiency of evaporation 3.4kgH2O/kg steam Evaporation of water 34.6 t/h Fresh steam consumption 10.5 t/h Clean water condensation 10.5 t/h The temperature of industrial water used 25°C Average consumption of industrial water used 39t/h Cooling water temperature 45°C The installed capacity 321.75kw Continuous operation capacity 294kw Recoverable condensate water pollution 34.6 t/h