Heat Recovery Steam Generators For Combined-Cycle Plant
Alstom selected to provide three heat recovery steam generators (HRSGs) for Dominion Virginia Power’s new 1300 MW Brunswick County Power Station.
The Brunswick facility will be located approximately 290 km south of Washington, D.C., near Lawrenceville, Virginia, U.S.A., and will provide enough power to meet the needs of more than 325 000 homes when it comes online in 2016. Alstom is contracted to Fluor Corporation, which is leading the engineering, procurement, construction and commissioning efforts for the project.
These units will be the largest HRSG’s supplied by Alstom for the North America market. They incorporate Alstom’s optimized for cycle and constructability (OCC) design, which offers better performance during gas plant cycling and a lower overall cost of construction, the company said. Selective catalytic reduction (SCR) and carbon monoxide catalyst technology embedded in the HRSGs significantly reduce overall emissions from the plant.
“Alstom is proud to be part of the Brunswick County project, while also providing three identical HRSG’s for Dominion’s Warren County Power Station,” said Patrick Fetzer, vice president and head of Alstom’s North American gas business. “Since providing some of the world’s first HRSGs, Alstom has worked to refine and enhance the designs based on customer feedback. These new units are built to perform well at base-load and part-load, which translates to more operational flexibility and a better value for the customer.”
HRSGs are the linkage between a combined-cycle plant’s gas-fired and steam-based power generation capabilities. When a gas turbine’s hot exhaust stream passes through the modules of an HRSG, water is converted to steam, which then spins a steam turbine. Each of the Brunswick County HRSG’s will be coupled with a MHI501G gas turbine.
Construction of the Brunswick County Power Station is pending approval from the Virginia State Corporation Commission.