Elga chemicals for Veolia energy recovery facility
6 Oct 2010
When Veolia Environmental Services has recently turned to ELGA Process Water to supply a specialist conditioning chemicals for the boiler water at its Tyseley energy recovery facility.
The Tyseley plant incinerates 350,000 tonnes of Birmingham’s non-recyclable rubbish each year and exports 25MW of electricity to the National Grid, suitable to power over 41,000 homes.
The facility has two 45bar 400°C water tube boilers delivering 67 tonnes per hour of steam to the high pressure turbines. It also has a 10bar waste heat shell boiler fuelled by a clinical waste incinerator, and this supplies steam to a low pressure turbine.
To maximise boiler efficiency, the quality of the water fed to the boilers has to be carefully controlled: Tyseley produces high purity deionised water on site and adds chemicals to scavenge oxygen and adjust the pH to prevent corrosion.
The combination of two types of boiler with common feed water and condensate systems means that controlling the boiler water chemistry at Tyseley requires a specialist solution.
In response, ELGA Process Water, a Veolia Water Solutions & Technologies company, developed appropriate chemicals from its Hydrex range to provide protection of the boilers, turbines and condensate system. it also drew up recommendations for regular service support to maintain ongoing boiler efficiency and optimal performance.
