Evaluation of CO2 Post Combustion Capture Integration with Combined Cycle Power and Desalination Cogeneration Plant in the UAE

  • Iman Ustadi

Student thesis: Master's Thesis

Abstract

Considering the consequences of global warming with a drastic emphasis on reducing the Carbon dioxide (CO2) emissions is one of the major global challenges attacking the world nowadays and in the years to come. Applying the technology of CO2 capture, transport and storage (CCS) from fossil fuel power plants is proved to be one of the effective solutions in the era of sustainable energy systems and a viable option to mitigate climate change consequences in the long term. The United Arab Emirates (UAE) is one of the counties that are striving towards vast economic growth, rapid urbanization and population boom that eventually resulted in an enormous increase in primary energy consumption and carbon emissions per capita. Moreover; the annual peak demand electricity projections in the UAE concludes that the demand is expected to increase at an annual growth rate of approximately 9% with an expected dependence on hydrocarbons as the sole for energy production. Adding to this; the increase in total water consumption is a growing problem in UAE with a heavy reliance on thermal desalination plants for water supply. Taking all these facts into account; the objective of this research was wellshaped. The presented project aims to integrate the post-combustion capture technology, using amine solvents, in Natural Gas Combined Cycle plants (NGCC) and Desalination Co-generation plants and assess the challenges associated with this integration. A major focus is on reducing the energy requirement and cooling water demands in order to make the integration approach more efficient and viable for application. This will be coupled with evaluating the effect of the Natural Gas market on the deployment of the CCS technology. This thesis consists of modelling the CO2 capture plant using ASPEN PLUS simulation and evaluating some potential scenarios to assess the performance of the three integrated plants and investigate the possibility of achieving heat recovery and cooling integration. The results obtained reveals that the electrical output of the power plant shows an overall reduction of 22.14% on integrating with capture plant to achieve constant water production of 12.38MIGD of distillate. Moreover; for the cooling integration approach; using a hybrid cooling system in the capture unit proved to be a promising method to reduce cooling water consumption.
Date of AwardDec 2014
Original languageAmerican English
SupervisorMohammad Abu Zahra (Supervisor)

Keywords

  • Desalination; CO2 Capture Plant
  • Natural Gas Combined Cycle.

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