• Heater of water, purified from pulp
• Heater of process water
• Black alkali recuperator
• Cooler of bleaching solutions
• Condensed gas recuperator
• Heat recuperator of gas scrubber water
• Heat recuperator of bleached effluents
• Drying area. Exhaust air heat recuperator
• Cooling of paper making machine shafts
• Wastewater cooling
• Wastewater evaporation
• Cooler of the solution after washing black alkali
• Water heating for waste paper recycling