Each stage of the paper making process – debarking and chipping, grinding and refining, discoloration and bleaching, paper formation and manufacture – subjects machinery, equipment, and the whole facility to extremely harsh environments. Mainly, these assets may suffer from different modes of erosion-corrosion, abrasion, and chemical attack.
In order to ensure that the pulp and paper plants continuously meet their production goals with the highest performance possible, Belzona has designed a wide range of solutions that not only combat the challenges presented, but also provide protection from potential damage in the future.
Belzona’s cold-applied systems have proven to help pulp and paper plants improve their operation by reducing downtime, eliminating replacements costs, and decreasing the risk of unscheduled shutdowns and startups. Belzona solutions for pulp and paper plants have shown reliability and success in the repair and protection of the machinery, equipment, and structures.
TYPICAL PROBLEMS
Typical problems in the debarking and chipping process include: erosion-corrosion on log conveyor belts, hoppers, debarkers, chippers, pipework, pumps, flanges, shafts, and structural metal.
POTENTIAL SOLUTIONS
Belzona 1000 Series 100% solids paste- and fluid-grade materials for metal rebuilding and erosion-corrosion protection, Belzona 2000 Series tough abrasion resistant polyurethanes for conveyor belt emergency repairs.
TYPICAL PROBLEMS
Typical problems in the pulping stage include: delignification reactors (digesters) due to a combination of aggressive chemicals and elevated temperature and pressure and erosion-corrosion on grinders and crushers.
POTENTIAL SOLUTIONS
Belzona 1000 Series 100% solids paste- and fluid-grade materials for erosion-corrosion protection, Belzona 4000 and 5000 Series for erosion-corrosion protection of secondary containment and fluid handling equipment.
TYPICAL PROBLEMS
For the hydra pulping stage, typical problems include: erosion-corrosion on agitators, hydrapulpers deflakers, holding chests and associated rotating equipment.
POTENTIAL SOLUTIONS
Belzona 1000 and 5000 Series paste- and fluid-grade materials for erosion-corrosion protection of surfaces under immersion
TYPICAL PROBLEMS
Typical problems at the deinking stage include: corrosion and moderate erosion on flocculators, settlers, pumps, agitators, and pipework due to the combination of chemical additives and elevated temperature.
POTENTIAL SOLUTIONS
Belzona 1000 and 5000 Series paste- and fluid-grade materials for erosion-corrosion protection.
TYPICAL PROBLEMS
At the blending and refining stage, typical problems include: chemical attack and severe erosion on blend chests and refiners due to the addition of various chemicals.
POTENTIAL SOLUTIONS
Belzona 1000, 4000, and 5000 Series paste- and fluid-grade materials for erosion-corrosion protection.
TYPICAL PROBLEMS
Typical problems for the pulp processing stage include: chemical attack, severe erosion, and moderate corrosion on pulp washers, deknotters, thickeners, centrifugal cleaners, screens, wash pumps, exctraction fans and cleaners, rotary vacuum washers, and deflakers, among others.
POTENTIAL SOLUTIONS
Belzona 1000, 4000, 5000, and 7000 Series paste- and fluid-grade materials for erosion-corrosion protection and equipment alignment.
TYPICAL PROBLEMS
For the stock preparation stage, typical problems include: chemical attack and severe erosion on blend chests and refiners due to the addition of various chemicals.
POTENTIAL SOLUTIONS
Belzona 1000, 4000, and 5000 Series paste- and fluid-grade materials for erosion-corrosion protection.
TYPICAL PROBLEMS
Typical problems associated with turbo separators include severe abrasion of Basalt tiles that leaves them cracked and with broken edges. In addition, extreme wear of the existing grouting compound leaving the joints unprotected.
POTENTIAL SOLUTIONS
Belzona 1100 Series paste-grade materials to rebuild damaged surfaces. Belzona 1800 Series paste-grade abrasion-resistant compounds to protect and rebuild damaged areas.
TYPICAL PROBLEMS
Typical problems on the paper machine include: moderate to severe erosion-corrosion on pressurized headboxes, shafts, rolls, pits, dryers, calenders, floors, and structural metal.
POTENTIAL SOLUTIONS
Belzona 1000, 4000, 5000, 7000 Series paste- and fluid-grade materials for erosion-corrosion protection and equipment alignment.
TYPICAL PROBLEMS
For power genration, typical problem areas are mostly corrosion problems related to elevated pressure and temperture on boilers, steam turbines, heat exchangers, and pipework.
POTENTIAL SOLUTIONS
Belzona 1000 and 5000 Series paste- and fluid-grade materials for corrosion protection.
TYPICAL PROBLEMS
For the chemical recovery stage, typical problems include: chemical attack and corrosion due to both thermal and chemical operations on evaporators, recovery boilers, pumps, heat exchangers, tanks, and clarifiers.
POTENTIAL SOLUTIONS
Belzona 1000, 4000, and 5000 Series paste- and fluid-grade materials for corrosion protection.
Belzona’s cold-applied systems for pulp and paper plants help to improve their operation.