Papermaking is one of the most steam-intensive industries on earth. After the wet sheet is formed and pressed, it still carries roughly one tonne of water per tonne of paper — and virtually all of it is removed by steam-heated dryer cylinders. Upstream, pulping digests chips with steam and evaporators concentrate liquor; downstream, corrugators and coating lines add further heat demand. Steam quality translates directly into machine speed: pressure fluctuation at the dryer section means moisture streaks, breaks and downtime.
Even mid-size Philippine paper and packaging mills draw 20–75 t/h continuously, which puts them squarely in water-tube territory — SZS series for gas/oil, or DHL corner-tube boilers where solid fuel economics win. Because mills generate their own combustible residues (bark, rejects, and in integrated plants, black liquor solids), biomass-fired configurations are common: the fuel is already on site, and every tonne burned is a disposal cost avoided.
Recycled-paper plants — the bulk of the local industry — pair well with chain-grate biomass boilers fed by wood waste and husk, with a gas-fired standby unit protecting the machine against fuel-supply interruptions. High-availability design (redundant feed pumps, robust grates, generous heating margins) is the difference between a mill that runs 350 days a year and one that doesn't.