Simulation of a NGCC Power Generation Plant for the Production of Electricity from CO2 Emissions Part II: SNGCC Power Plant

• 作者: Zin Eddine Dadach
• 来源期刊: 电力能源(英文)
• 学科: 数学
• 关键词: Synthetic Natural Gas Combined Cycle (SNGCC)
• 年，卷（期）: 2020,（8）
• 页码范围: 53-62
• 页数: 10页
• 分类号: O17

摘要

The objective of the first part of the investigation was to use Aspen Plus software and the Redlich-Kwong-Soave equation of state in order to simulate an adiabatic methanation reactor for the production of synthetic natural methane (SNG) using 1 kg/hr<span><span><span style="font-family:;" "=""> </span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">of carbon dioxide. In this paper, we define the Synthetic Natural Gas Combined Cycle (SNGCC) as a combined cycle power plant where the fuel is synthetic natural gas (SNG) produced by a methanation reactor. The feed of the methanation reactor is the recycled stream of carbon dioxide of a CO₂ capture unit treating the flue gas of the SNGCC power plant. The objective of the second part of the investigation is the utilization of Aspen plus software with SRK equation of state for the simulation of the SNGCC power plant. The metallurgical limitation of the gas turbine was fixed at 1300^{<span style="font-family:Verdana, Helvetica, Arial;white-space:normal;background-color:#FFFFFF;">°<span style="font-family:Verdana;white-space:normal;"></span></span>}</span></span>C in this investigation. For effective absorption by amine solutions, the molar percentage of CO₂ in the flue gas should be higher than 10%. Moreover, in order to reduce technical problems linked to oxidative degradation of amine in the CO₂ capture plant, the percentage of O₂ in the flue gas should also be lower than 5%. To reach this goal, the primary air for combustion has 10% excess air (compared to stoichiometric air) and 37% of the flue </span><span style="font-family:Verdana;">gas leaving the SNGCC is recirculated as the secondary air for cooling the</span><span style="font-family:Verdana;"> turbine</span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">.</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span