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Modelling and optimization of a Gas-to-Liquid plant
Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, Department of Chemical Engineering.
2013 (English)MasteroppgaveStudent thesis
Abstract [en]

This thesis investigates the operational performance and optimization of a Gas-to-Liquid plant based on autothermal reforming (ATR) and a multi tubular fixed bed (MTFB) reactor together with a cobalt catalyst. This is achieved through simulation of the process in Unisim Design R400. The simulations were based on a feed designed for a 17000 bbl/d train and does not incorporate the upgrading unit. The work is divided in three main sections; parameter study, optimization on syncrude flow, carbon- and thermal efficiency and optimization with consideration to economics including heat integration through pinch analysis. The optimized process was found to produce 19940 bbl/d of syncrude with a carbon efficiency of 82.41% and thermal efficiency of 65.93%, when not taking economics into consideration. The inclusion of economics changed the operational optimum to a syncrude production of 18620 bbl/d and efficiencies of 77.25% and 61.77% respectively. Ultimately a production cost of 16.10 USD/bbl and revenue of 59.89 USD/bbl was obtained. With current crude oil price at 98.90 USD/bbl it indicates a good economical environment for the Gas-to-Liquid process.

Place, publisher, year, edition, pages
Institutt for kjemisk prosessteknologi , 2013. , 217 p.
URN: urn:nbn:no:ntnu:diva-22287Local ID: ntnudaim:9284OAI: diva2:648742
Available from: 2013-09-16 Created: 2013-09-16 Last updated: 2013-09-16Bibliographically approved

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