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	Alfa Laval spiral heat exchangers are designed to handle the toughest heat transfer challenges. Whether it’s frequent fouling from dirty media, or limitations from pressure drop and floor space, they are the ultimate problem solver for liquid-to-liquid and two-phase duties. The robust, efficient and compact designs keep both installation and maintenance costs extremely low, and they have a proven reputation for almost never fouling up.

Alfa Laval is the only supplier on the market with more than a half-century of experience with spiral technology. Today our spiral heat exchangers can be found in plants around the world, solving tough problems in industries that include: petrochemical, refinery, steel making, pulp and paper, mineral processing (metals, ore), wastewater treatment (municipal and industrial), pharmaceutical, vegetable oil refining and natural gas transportation.

Features and benefits

Minimal fouling, or clogging, in duties involving very dirty, highly viscous or particulate media, ensures uptime

Easy-to-open design makes cleaning quick and simple, ensuring low maintenance costsReduced pipework and steel structures means lower installation costs

Increased energy savings and reduced emissions thanks to thermal efficiencies 2-3 times higher than comparable shell-and tube exchangersEach unit is fully customized, offering the best thermal fit for the specific duty.

MODEL

SpiralPro for liquid-to-liquid duties

Alfa Laval’s SelfClean™ construction makes SpiralPro model heat exchangers a smart choice when working with dirty fluids, sludges, emulsions, slurries, fibres or particle loaded liquids. Since the fluids flow continuously in one single channel, the fluid force acts against any deposits, “pushing” them through the channel and out the other end.
The compact nature of the SpiralPro model often allows several large shell-and-tubes heat exchangers to be replaced by one single SpiralPro exchanger. This creates considerable infrastructure benefits in addition to reducing maintenance and cleaning requirements. If the unit needs cleaning, the covers can easily be removed for washing with a hydro jet.
Applications
Fouling liquids containing solids, fibres, liquors, slurries and sludges
Liquid-to-liquid preheating, heating, cooling, interchanging and heat recovery

SpiralPro for steam heater duties

SpiralPro model heat exchangers optimized for duties involving steam heating of liquids that are highly fouling are also available. Like all SpiralPro units, these are fully accessible for quick and easy cleaning with hydro jets.
The counter-current flow also ensures a very close temperature approach for maximum thermal efficiency.
Applications
Fouling liquids containing solids or fibres, liquors, slurries and sludges and other challenging fluids that require heating by steam.

SpiralCond for vacuum condensing and evaporation duties

SpiralCond model heat exchangers offer a highly efficient solution for challenging two-phase duties, including both condensing and evaporation (reboiling). SpiralCond’s compact design and the fact that it is configured vertically results in a very small footprint, compared to equivalent shell-and-tube exchangers, while also reducing supporting structures, and piping complexity.
SpiralCond units have cross-flow rather than counter-current flow. Each unit is fully customized according to the duty required, with channel spacing adjusted to provide the lowest pressure drop. SpiralCond is therefore ideally suited to vacuum condensing applications.
Applications
Gases: pure vapour and mixtures with inert gases
Vapour/liquid: top condensers, reflux condensers, vacuum condensers, vent condensers, reboilers with fouling fluids, gas coolers.

SpiralCond in stacked column configuration

Alfa Laval SpiralCond

For condensing and evaporation applications where multiple cooling media are involved, Alfa Laval can deliver SpiralCond model heat exchangers integrated in a column. Like the single stand-alone SpiralCond, this configuration has cross-flow and open channels for extremely low pressure drop in vacuum situations.

The high efficiency of SpiralCond allows the column to be both shorter in height and smaller in diameter than traditional column solutions, thus offering major savings in infrastructure and installation costs.

Applications

Vapour-liquid: top condensers, reflux condensers, vacuum condensers and vent condensers.