Alfa Laval spiral heat exchangers Problem solvers for tough applications

• Reliable operation, virtually no fouling and clogging • Huge savings on maintenance costs • Energy and fuel savings • Short payback times Heat exchanger downtime getting you down? Does your process involve fouling fluids, sludges, emulsions, slurries, fibres or particle loaded liquids? Do your shell-and-tube heat exchangers suffer from fouling and clogging, resulting in costly downtime and huge maintenance bills that keep you awake at night? If so, the fouling and clogging probably also lead to other costs, such as higher fuel consumption in the boiler and increased electricity consumption...

Emissions eliminated, energy savings Avdeevskiy coke processing works, Ukraine, replaced two open final gas cooling systems, using scrubbers, with Alfa Laval closed systems utilizing spiral heat exchanger columns. Harmful emissions were eliminated. Reduced pumping requirement and elimination of water treatment provided substantial energy savings. Benefits of Alfa Laval SHEs • Virtually no fouling or clogging • Reliable operation, maximum uptime • Easy to open and clean, low maintenance costs • Low installation costs, less pipework and steel structures • Energy savings due to high heat recovery...

• elf-cleaning design S • igh thermal efficiency H • aste heat recovery W • o dead spots or stagnation N The heat exchanger that cleans itself Alfa Laval spiral heat exchangers (SHEs) are based on an ingenious design. It provides optimum heat transfer and flow conditions for a wide variety of fluids, with a built-in self-cleaning effect, while keeping the overall size of the unit to a minimum. An SHE works like this… Alfa Laval SHEs are circular units containing two concentric spiral flow channels, one for each fluid. The different media flow counter-currently in these channels with no risk of...

Fouling minimized, maintenance costs reduced In its new refinery, a Russian oil company replaced 12 shell-and-tube heat exchangers in the visbreaking process with eight Alfa Laval SHEs. Since there is hardly any fouling, the company saves€1.6 m Euro per year on maintenance and production is more stable and profitable. Waste heat recovery The secret is the true counter-current flow. It enables crossing temperature situations where the cold fluid can be heated to temperatures very close to those of the hot fluid. The closer the temperature approach between two fluids, the more heat is recovered....

Designed to meet all your application needs Available with design pressures of up to 100 barg, Alfa Laval SHEs are designed to meet all your application needs, from dirty fluids to vacuum condensation and reboiling duties. Although Alfa Laval offers standardized versions, many customers request the customized solutions of our SHEs shown on these pages. Spiral Heat Exchanger Type 1 Spiral Heat Exchanger Type 2 Maximum heat recovery with counter-current flow Cross-flow condensing with lowest possible pressure drop The Type 1 is a good choice when one, or both, fluids are fouling, due to its self-cleaning...

In our four main types, the shape and size of the spiral channels can be further customized to form a perfect match for the demands associated with a wide range of process fluids, thermal duties and industrial applications. Spiral Heat Exchanger Type 3 Spiral Heat Exchanger Type 4 Two in one – cross-flow and counter-current paths in the same unit Column solutions The Type 3 SHE is often called a “steam heater” and has a mixture of Type 1 and Type 2 features. The main feature is that the liquid being heated by the steam is generally fouling, therefore the circuit is designed to be accessible for...

A look inside the products• Spiral Heat Exchanger Type 1 Spiral Heat Exchanger Type 2 Maximum heat recovery with countercurrent flow Cross-flow condensing with lowest possible pressure drop The Type 1 is almost always a liquid/liquid heat exchanger. In most cases it is mounted horizontally and can be opened at each end. Each channel circuit is seal welded on one side and open on the other. The open channel is sealed by the gasket face of the end cover. The fluid in the two channels always follows the spiral direction, from the outside towards the centre, or the centre to the outside. The flow...

Spiral Heat Exchanger Type 3 Spiral Heat Exchanger Type 4 Two-in-one – cross-flow and counter-current paths in the same unit Column solutions The Type 3 spiral is often called a “steam heater” and has a mixture of Type 1 and Type 2 features. It can be horizontal or vertical. The main feature is that the liquid being heated by the steam is generally fouling which means that the circuit must be accessible for cleaning. The Type 4 spiral refers to a spiral that is integrated into a column, often as part of a distillation process. In most cases the spiral operates similarly to the Type 2. Therefore...

• lfa Laval – the heat transfer specialists A • ontinuous product development C • tate-of-the-art design and testing S • dvanced calculation tools A Customer-driven product development The technology leader in the field of heat transfer, Alfa Laval has manufactured SHEs and continuously improved their designs for almost half-a-century. Today’s compact, energy saving, non-fouling SHEs are an excellent example of the company’s ongoing investments in product development. Standard process equipment SHEs are now standard equipment for many processes. They play an important role in plants in a wide...

• Extremely high reliability • mpressively low maintenance costs I SHE stands for maximum uptime Low maintenance, easy access Install SHEs and you will dramatically reduce your downtime and maintenance costs. In addition to the fact that they hardly ever break down, Alfa Laval SHEs require much less maintenance. Some of our customers haven’t opened their SHEs for many years. Compare that with any other heat exchanger! global team of highly experienced field service engineers and welding specialists to support you. There are more than 55 service centres worldwide, some specializing in welded heat...