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Rolls-Royce, Cogeneration Plant, 1997, 50 MW, Steam 200 PSIG

Rolls-Royce, Cogeneration Plant, 1997, 50 MW, Steam 200 PSIG

Description

  1. Overview
    1. Sector of activity: Thermal power
    2. Year of completion: 1997
    3. Capacity: 50 MW
    4. Financing: Client
    5. The project is a natural gas fired cogeneration plant generating electric power for sale to Ontario Hydro and process steam for sale to Atlantic Packaging Products Ltd.'s Whitby recycle mill.
    6. The project was the first in the world to use a Rolls-Royce Trent engine in a land based power generation application and is combined with an innovative Steam Technologies' once through heat recovery steam generator (OTSG) to meet the steam hosts operating requirements.
    7. The plant was specified with provision for the future addition of a steam turbine generator to convert the plant to combined cycle cogeneration operation.
    8. Space allocation was also made for the future addition of a second gas turbine/OTSG train.
  2. Combustion Turbine Generator
    1. The combustion turbine generator (CTG) is rated to produce 51.2 MW at site conditions and is equipped with a pulse type inlet filter.
    2. Electric power is generated by a Brush generator rated 66.3 MVA at 13.8 kV.
    3. Power is stepped up to 230 kV for export to the Ontario Hydro grid.
    4. The 230 kV substation and interconnecting transmission line were provided as part of the project.
  3. Heat Recovery Steam Generator
    1. The OTSG is designed to initially produce process steam at 200 psig/400 °F, with the capability for a future upgrade to 900 psig/900 °F conditions if the owner elects to modify the plant for combined cycle cogeneration service.
    2. At the initial conditions the OTSG is rated to produce 135,000 lb/hr of steam unfired and is equipped with a duct burner to increase its output to 170,000 lb/hr.
    3. With its ability to run dry, the output of the OTSG can be controlled to match the host's steam demand over the range of 5,000 to 170,000 lb/hr.
  4. Gas Compressors
    1. Two 100 percent reciprocating gas compressors were installed to boost the gas pressure to match the CTG requirements.
  5. Auxiliary Boilers
    1. The plant is equipped with two auxiliary boilers, each rated 95,000 lb/hr to provide process steam to the host during plant outages.
    2. The boilers are maintained on warm stand-by and can achieve full output within six minutes of a start signal.
  6. Services Provided
    1. SNC-Lavalin provided owner's engineering and project management services including preliminary design, preparation of the EPC specifications, EPC contract evaluation and negotiation, review of contractor documents during design and construction, scheduling and document control.
    2. In addition, SNC-Lavalin seconded an employee to the owner to serve as the owner's project manager during the design phase of the project.