MULTITUBE HEAT EXCHANGER
The BOIXAC tubular heat exchanger is a modular, high-performance thermal transfer solution, specifically designed for the treatment of viscous, sticky fluids, fluids containing suspended solids, or fluids with a tendency to sedimentation and fouling.
Its design allows the configuration of multiple interconnected tubes, resulting in a multitubular heat exchanger that is robust, efficient, and highly adaptable to demanding industrial processes.
Construction design and materials
The construction is based on the tube-in-tube or concentric tube principle, a configuration that ensures high heat transfer efficiency and precise flow control.
Given its application in highly demanding industrial sectors—such as food processing, pharmaceutical, or chemical industries—BOIXAC tubular heat exchangers are manufactured using high-quality materials, mainly:
AISI 304 stainless steel
AISI 316 stainless steel
The connections between tubes are made using removable bends, which are easily extractable, making this system one of the most durable, efficient, and practical solutions on the market, both in operational and maintenance terms.
Design adapted to the rheological behavior of the fluid
The operation of a BOIXAC tubular heat exchanger is closely linked to the rheological behavior of the fluid to be treated.
In Newtonian fluids, with constant viscosity, heat transfer is uniform and predictable, enabling accurate thermal and hydraulic calculations and stable operation over a wide range of flow rates.
In non-Newtonian fluids, or fluids containing suspended solids, fibers, or with a risk of fouling, the tubular design allows:
Adjustment of flow conditions.
Definition of specific velocities inside each tube.
Reduction of fouling.
Facilitation of direct mechanical cleaning.
Maintenance of energy efficiency and process operational continuity.
The fluid behavior directly influences key factors such as:
Flow regime (laminar or turbulent).
Heat transfer coefficient.
Pressure drop.
Fouling tendency.
Ease of cleaning and maintenance.
BOIXAC tubular systems provide precise flow control for both Newtonian and non-Newtonian fluids, ensuring optimal heat transfer and high operational reliability.
Key advantages of the tubular heat exchanger (hairpin type)
Hairpin-type heat exchangers provide:
High fouling tolerance, ideal for fluids containing impurities, fibers, particles, or sediments.
Easy maintenance, with direct access to the interior of the tubes.
Modular design, built from easily assembled components, allowing access and installation in confined spaces.
Typical ROI
3-12 months
Ideal for
solids, fibres & residues
Warranty
2 years
Design
modular
Industrial applications
The BOIXAC tubular heat exchanger is a proven solution across a wide range of industrial sectors where complex, viscous, non-Newtonian fluids containing suspended solids, fibers, sediments, or with a high fouling risk must be handled.
Food industry. Particularly suitable for thermal processes requiring precise temperature control, hygiene, ease of cleaning, and operational continuity:
Fats and oils: vegetable oils (sunflower, rapeseed, soybean, olive), animal fats, margarines, shortenings.
Fermented beverages: must, wine, alcohol, malt, beer, cider.
Sauces and food preparations: tomato sauce, sofritos, ketchup, mustard, mayonnaise, emulsified sauces.
Viscous and pasty products: purées, creams, concentrates, syrups, molasses.
Fruit juices and derivatives: natural juices, concentrates, pulps, nectars.
Dairy industry: milk, cream, whey, liquid yogurt, processed cheeses.
Food by-products: process residues, particle-laden streams, extraction and refining by-products.
Wastewater, WWTPs, and environmental treatment. Designed to handle highly loaded and aggressive fluids where other technologies fail:
Primary and secondary sludge.
Digested and dewatered sludge.
Livestock manure and slurry.
Industrial wastewater with suspended solids.
Streams containing sediments, fibers, or organic matter.
Preheating or cooling prior to anaerobic digestion, drying, or thermal treatments.
Chemical industry. A robust solution for continuous or batch processes with challenging fluids:
Viscous or non-Newtonian chemical products.
Solid–liquid suspensions and mixtures.
Resins, liquid polymers, glues, and adhesives.
Products prone to fouling or crystallization.
Chemical by-products and waste streams.
Energy recovery in chemical processes.
Pharmaceutical and biotechnological industry. Particularly suitable for processes where cleanliness, traceability, and product integrity are critical:
Viscous pharmaceutical solutions.
Suspensions and emulsions.
Intermediate synthesis products.
Fermentation broths.
Biotechnological by-products with solid load.
Heating, cooling, or thermal stabilization processes.
Automotive industry and surface treatments. Suitable for industrial fluids with chemical and solid loads:
Industrial paints and coatings.
Varnishes and lacquers.
Surface treatment baths.
Process fluids containing pigments or particles.
Thermal recovery and stabilization of process streams.
Other industrial sectors.
Pulp and paper: pulps, fibers, black and white liquors.
Cosmetics: creams, gels, emulsions, shampoos.
Energy and biomass: organic by-products, solid-laden streams.
Animal feed industry: viscous mixtures, suspensions, animal or vegetable by-products.
This wide range of applications confirms that the BOIXAC tubular heat exchanger is a highly versatile solution, particularly suitable for processes where mechanical robustness, ease of cleaning, fouling tolerance, and thermal efficiency are critical factors.
Why choose a multitube heat exchanger
One of the main advantages of the BOIXAC tubular heat exchanger is its ability to handle demanding fluids that cannot be efficiently treated using other heat exchange technologies.
Its modular, multitubular, and dismantlable design provides:
Excellent accessibility.
Ease of assembly and disassembly.
Efficient cleaning and reduced operating costs.
High and consistent thermodynamic performance.
All this without compromising the robustness, reliability, or energy efficiency that characterize BOIXAC thermal transfer solutions.
Pillow plate heat exchanger
Concentric tube-in-tube heat exchanger
Shell & tube heat exchanger