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Heinz is saving six per cent of its average steam load per year at its baked bean factory in Wigan by recovering energy from effluent using a system designed and built by Spirax Sarco.

Heinz Beanz begins by blanching the raw haricot beans in hot water.

Starches and sugars leach from the beans into the water and agricultural residues are washed off.

The blanching water must be purged regularly to maintain the necessary quality.

Before the new system was installed, the purged hot water was disposed of to drain, but the Spirax Sarco system now intercepts it and uses it to help heat the blanching process.

The system recovers around 1,500kW.

The filtered effluent is passed to one of two heat exchangers, which use its energy to preheat the blanching make-up water, cooling the effluent in the process.

The make-up water then passes through another exchanger, which uses steam to raise its temperature before entering the blanching vessel.

The vessel itself is maintained at an optimum temperature by injecting live steam.

Spirax Sarco benefits built on knowledge. Spirax Sarco has all the products, services and expertise needed to make the best investments in building and maintaining a steam or industrial fluid plant.

A complete and flexible range of services is available to cover any need from supplying an individual steam trap, to a complete new plant and everything in between. Spirax Sarco Services can help identify, improve and sustain steam system efficiency at every point in the steam and condensate loop.

In addition, custom-built solutions can be created to take a project from design and build to commissioning, support and scheduled maintenance on time and on budget. Pioneers in steam, Spirax Sarco has developed longstanding relationships with customers across a wide range of industries, including hospitals; food & beverage; pharmaceutical; oil and petrochemical; and waste and waste water. Forward thinking to keep you one step ahead As the market leader in steam systems, Spirax Sarco has the market presence and resources to keep abreast of the latest legislative and technological developments.

At the forefront of training Well-trained personnel are essential to achieving the best plant performance.

Spirax Sarco can provide all the training that your staff requires, either on-site or at the Cheltenham-based training centre, for nationally recognised qualifications including BTEC, City & Guilds and the Boiler Operative Accreditation Scheme (BOAS).

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