The Evaluation of Natural Gas Combined Cycle with CO2 Post-Combustion Capture Deployment in the Mirfa Plant

  • Alia Aljasmi

Student thesis: Master's Thesis

Abstract

The United Arab Emirates is one of the countries that has a high carbon footprint per capita due to the fast industrial and economic development. Therefore, carbon capture technologies gain a high interest in the UAE to reduce carbon footprint which will reduce greenhouse emission as well. Moreover, captured carbon dioxide (CO2) can be used to enhance oil recovery (EOR) since UAE has a large oil and gas industry. The techno-economic evaluation of the natural gas combined cycle (NGCC) power plant with MEA capture process was carried out using Aspen plus (version 8.4) based on the process flow scheme. The availability of large quantity of high purity Oxygen (contains 71% of O2) which comes from Mirfa Plant was utilized in order to produce electricity. Thus, different cases with different concentrations of O2 were discussed. First, we had 30% of O2, then the process was repeated with 40% and 50% of O2 in order to see the effect of O2 on the overall process performance and output CO2 concentration as well. Besides, the case in which the flow contains around 20% of O2 was studied also where the air was the case here. Following that, the equipment were selected and sized in order to evaluate the total capital investment, operational cost and cost of CO2 avoided which were used to measure the process performance.The result of CAPEX for MEA process is the highest for the case of air, whereas, it is reduced to almost the half for the case of 50% of O2. While, the OPEX for MEA process is reducing as the concentration of O2 increases and it remains almost the same for the case of 40% of O2 and 50% of O2.
Date of AwardDec 2017
Original languageAmerican English

Keywords

  • UAE carbon footprint
  • oil and gas industry
  • natural gas
  • greenhouse emission
  • carbon dioxide (CO2).

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