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Quotes - Engineering - SalesChemical & Pulp Production Applications with Tube-in-Tube Heat Exchangers
Tube-in-tube heat exchangers provide robust solutions for corrosive and abrasive duties in chemical and pulp production. The rugged concentric construction effectively manages strong acids, alkaline solutions, and pulp slurries while delivering consistent high-efficiency heat transfer.
Key Chemical & Pulp Production Applications
- Acid Processing: Cooling of concentrated sulfuric, nitric, and hydrochloric acids in synthesis and recovery loops.
- Black Liquor Heating: Preheating and concentration of black liquor in kraft pulp recovery processes.
- Caustic and Chlorine Streams: Heat exchange in chlorine dioxide generation, caustic soda evaporation, and bleaching operations.
Corrosive Chemicals
Tube-in-Tube Heat Exchangers
- High Alloy Compatibility
- Acid & Caustic Resistance
- Zero Gasket Exposure
Pulp Slurries
Tube-in-Tube Heat Exchangers
- Fiber Handling Capability
- Erosion Resistant Tubes
- Low Plugging Design
The Benefits of Tube-in-Tube Heat Exchangers for Chemical & Pulp Production
Tube-in-tube heat exchangers are optimized for the aggressive environments of chemical and pulp production. Straight concentric flow paths prevent fiber bridging and solids accumulation common in pulp slurries while resisting chemical degradation.
True counterflow design enables precise temperature control and high thermal efficiency for energy-intensive recovery processes. Advanced alloys such as Hastelloy, titanium, and super duplex stainless steel provide long-term protection against pitting and stress corrosion cracking.
The fully welded construction eliminates gasket-related failures in corrosive service. Optional internal enhancements improve heat transfer in viscous black liquor and bleaching solutions without increasing pressure drop excessively.
Compact size eases integration into existing production lines. Minimal hold-up volume and full drainability support rapid product changeovers and cleaning. Field-proven in kraft mills, acid plants, and specialty chemical facilities for black liquor concentration, acid cooling, and caustic heating — offering extended service life, reduced maintenance, and improved process reliability.
