Thermo-economic assessment of the integration of steam cycles on offshore platforms

Tuong-Van Nguyen, Laurence Tock, Peter Breuhaus, François Maréchal, Brian Elmegaard

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    Abstract

    The integration of steam bottoming cycles on oil platforms is often seen as a possible route to mitigate the CO2-emissions offshore. In this paper, a North Sea platform and its energy requirements are systematically analysed. The site-scale integration of steam networks is assessed by using thermodynamic and economic performance indicators. The results illustrate the benefits of converting the gas turbines into a combined cycle. Using seawater results in smaller power generation and greater CO2-emissions than using process water, as the additional power generation in the combined cycle is compensated by the significant pumping demand. This work emphasises that energy improvement efforts should be analysed at the scale of the overall site and not solely at the level of the combined cycle.

    Original languageEnglish
    Title of host publicationProceedings of ECOS 2014, 27st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
    Number of pages15
    PublisherÅbo Akademi University
    Publication date2014
    Publication statusPublished - 2014
    EventECOS 2014: 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - Åbo Akademi University, Turku, Finland
    Duration: 15 Jun 201419 Jun 2014

    Conference

    ConferenceECOS 2014
    LocationÅbo Akademi University
    Country/TerritoryFinland
    CityTurku
    Period15/06/201419/06/2014

    Keywords

    • Process integration
    • Steam cycles
    • Offshore platforms
    • Oil and gas

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