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Quotes - Engineering - SalesPulp & Chemical Applications with Tube-in-Tube Heat Exchangers
Tube-in-tube heat exchangers are engineered for the harsh conditions of pulp and chemical processing. Their robust concentric design handles high temperatures, high pressures, corrosive chemicals, and viscous streams while providing efficient counterflow heat transfer and long-term reliability.
Key Pulp & Chemical Applications
- Black Liquor Heating: Preheating and heat recovery in kraft pulp recovery boilers with high solids and corrosive media.
- Chemical Recovery: Heating/causticizing of green liquor, white liquor, and other aggressive alkaline streams.
- Acid Cooling & Heating: Thermal processing of sulfuric acid, hydrochloric acid, and other corrosive process chemicals.
- Viscous & Slurry Streams: Handling tall oil, lignin, starch, and other high-viscosity chemical byproducts.
- Process Heat Exchange: Interstage cooling/heating in chemical production and pulp mill operations.
Corrosion Resistant
Tube-in-Tube Heat Exchangers
- Duplex, Titanium & Nickel Alloys
- High Corrosion Resistance
- Long Service Life
High Temp & Pressure
Tube-in-Tube Heat Exchangers
- Extreme Operating Conditions
- Thermal Shock Resistance
- Robust Construction
The Benefits of Tube-in-Tube Heat Exchangers for Pulp & Chemical Applications
Tube-in-tube heat exchangers deliver reliable performance in pulp and chemical plants under severe conditions. The concentric design provides high structural strength, eliminates gaskets in the process path, and ensures leak-free operation even with aggressive chemicals and high pressures.
True counterflow maximizes thermal efficiency while handling viscous black liquor, corrosive acids, and caustic solutions. Special alloys such as duplex stainless steel, titanium, and nickel alloys resist corrosion, erosion, and high temperatures for extended service life.
Robust construction withstands thermal cycling, pressure surges, and fouling. Optional corrugated tubes increase turbulence and heat transfer rates in viscous or scaling streams without compromising durability.
Compact footprint fits tight mill layouts. Easy access and full drainability simplify maintenance and cleaning. Energy recovery from hot process streams reduces fuel consumption and operating costs.
Proven in black liquor heating, chemical recovery, acid cooling, and pulp mill heat exchange worldwide — these exchangers provide superior durability, efficiency, reduced downtime, and lower total cost of ownership in harsh chemical environments.
