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Rectangular ductwork for desulphurisation system

Construction of rectangular FRP ductwork as part of the flue gas desulphurization system in an 80 MW steam turbine.
This ducting system replaced the existing metallic system that had been degraded by corrosion.

Operating Conditions

The design specifications were very demanding, with an operating temperature of 99ºC and an internal pressure of 2000 Pa.
In addition the exhaust gases from the preheater carried sulphuric acid at a concentration of 50%.

Material

The ducts were manufactured in FRP. Because of the operating conditions (input to and output from the absorber), the resins used were a novolac (high temperature) vinylester epoxy resin, and a bisphenol-A (low temperature) vinylester epoxy resin.

Client

Alstom Power

Location

Central Térmica de Endesa
Baranco de Tirajana (Las Palmas)
Gran Canaria, Spain

Year of Completion

2010

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PH Technology
Ctra. A-5000 km 7,8
San Juan del Puerto
Huelva – CP 21.610
(+34) 959 35 61 37 / 75
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