ENGINE & TURBINE TECHNOLOGY
Sulzer cooling water turnkey system for EDF’s most advanced CCGT power plant
pened in 2016, EDF Energy’s combined-cycle gas turbine (CCGT) power plant at Bouchain in Northern France has already
earned a place in the record books. T e 605MW power plant is one of the most energy-effi cient in the world, achieving an overall effi ciency level of 62.22%. Bouchain is also playing an important role in the
Sulzer experts from France and Switzerland worked to propose a solution that met EDF’s technical requirements
COOL RUNNING O
country’s energy transition, replacing an aged coal-fi red power plant while providing a reliable and fl exible source of power. T e Bouchain plant can ramp up its
output from zero to full power in only 30 minutes, and as demand drops, its turbines can reduce their output by up to 40% while still complying with stringent emissions regulations. To achieve its class-leading
levels of performance, the plant uses a host of advanced technologies, and EDF partnered with major technology providers from across the world to design and build the power plant. One of those partners was Sulzer, a leading global provider of pumping solutions.
CCGT plants such as Bouchain operate pairs of turbines that work together. Combustion of natural gas spins the gas turbine, which drives the generator; the hot exhaust gases are used to create high pressure steam that powers the steam turbine, which is also connected to the generator. T e exhaust steam is then condensed and cooled ready for re-use.
SYSTEM DESIGN AND DELIVERY Sulzer was contracted to deliver the design and manufacture of the pump installation for the condenser that forms an integral part of the steam recovery process. Two large vertical pumps circulate cold water between the condenser and the plant’s cooling towers, moving around 32,000m3 of water per hour when the plant is operating at full load.
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