Fight back against corrosion and irreversible damage from pollutant by-products at pulp and paper mills. Healthy Filters’ molecular filters prevent equipment failure across a range of applications—keeping your operations on track.
Even in the digital era, paper and cardboard are global staples. Turning wood and recycled paper into pulp and new paper means using harsh chemicals—and these chemicals corrode process equipment, especially sensitive electronic and electrical controls. When those fail, you’re stuck with unplanned shutdowns, lost efficiency, and hit profits.
Key Corrosion-Causing Contaminants
Core papermaking steps—pulp/wastepaper bleaching, lignin removal, and wastewater treatment—release gases that spark corrosion. The main culprits:
– Hydrogen sulfide, sulfur dioxide, mercaptans
– Chlorine, chlorine oxide, ozone
Pre-filter, activated carbon filter, ultrafiltration/reverse osmosis filter
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Electrical and electronic control rooms need temperature- and humidity-controlled air to meet OEM warranty requirements. This supply air often comes from outside—where acidic gases are common. If those gases get in, corrosion damages equipment and triggers failures. Molecular filtration locks out these harmful gases.
Inlet air can have gas concentrations in the tens of ppm, but OEM warranties (per ISA 71.04-2013 Corrosion Class G1) demand in-room levels as low as ppb. A molecular filter in your outdoor air system delivers high single-pass efficiency. This air—up to 40% of total ventilation—pressurizes the control room to block fugitive gases (though leaks or frequent door openings can weaken this).
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