Boilers are essential in paper mills as they generate high-temperature steam used for pulping, heating, drying, and chemical processing. This steam supports multiple stages of paper production, making boilers a critical part of mill operations.

A boiler works by converting fuel (such as gas, oil, or biomass) into heat energy, which turns water into steam. This steam is then distributed throughout the plant to power processes like pulp digestion, drying paper sheets, and heating equipment.

Common types include steam boilers, recovery boilers, and water-tube boilers. Recovery boilers are especially important as they recycle chemicals and generate energy from byproducts like black liquor, improving efficiency and sustainability.

Boilers are considered the backbone of paper production because they provide the energy required for key processes like cooking pulp and drying paper. They also help reduce energy costs and improve operational efficiency when integrated with energy recovery systems.