Finned Tube Heat Exchanger for Paper Industry Drying System

Industrial high-frequency welded finned tube heat exchanger is the core heating component for paper machine drying section, pulp drying room and paper coating drying tunnel in papermaking plants. Using saturated steam, hot water or thermal oil as heating medium, this finned radiator continuously heats circulating hot air to evaporate residual moisture of wet base paper after pressing. Optimized wide fin pitch and anti-corrosion structural design adapt high humidity environment plus floating paper fiber, pulp dust and volatile chemical additives inside paper workshop, keep stable drying temperature and improve finished paper flatness and quality. Widely used in kraft paper, tissue paper, cultural paper, coated paper and pulp dehydration drying production lines.

Working Principle

High-temperature heat medium flows inside finned base tubes and releases heat; heat transfers rapidly to external fin surfaces. Circulation fan pushes workshop air cross flowing over fin bundle and forms constant-temperature hot air. Hot air blows evenly onto running wet paper web, evaporates free moisture inside paper fiber; moist exhaust air is discharged after partial waste heat recovery, fresh preheated air supplements circulation to realize continuous high-speed paper drying.

Core Product Advantages

1. Anti-block Large Fin Pitch Against Paper Fiber Dust

Optimized wide clearance design prevents paper fluff and fine pulp accumulation, reduce regular shutdown cleaning frequency and improve paper machine continuous operation rate.

2. Uniform Gentle Heating Improve Paper Quality

Even hot air distribution avoids local overheating causing paper shrinkage, curling, pinholes and crack, reduce defective rate of finished paper and upgrade product grade.

3. High Thermal Efficiency Save Steam Consumption

Extended fin heat exchange area accelerates air heating, shorten paper drying time, effectively cut steam cost for large-scale paper mills.

4. Custom Anti-corrosion Option for Special Papermaking Process

Stainless steel configuration adapts acidic coating and chemical pulp drying condition, prolong service life in corrosive papermaking environment.

5. Excellent Compatibility with Papermaking Waste Heat System

Can make full use of waste heat generated by black liquor recovery boiler in pulp factory, maximize energy recycling and realize factory energy-saving transformation.

6. Flexible Modular Customization

Combine multiple heater modules according to paper machine width and production speed, fit new production line matching and old papermaking drying system retrofit.

Application Range

Tissue, toilet paper, kraft liner paper paper machine drying section

Coated art paper, offset paper coating drying tunnel

Wood pulp, straw pulp raw material dehydration drying workshop

Paper mill waste heat recovery & workshop constant temperature heating system