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提出了一种应用甲烷重整技术的燃气轮机新循环。首先,根据系统的工作过程,应用热力学平衡方法分析燃烧室反应的热平衡;其次依据热力学第二定律,研究了燃气轮机新循环火用效率的变化趋势。结果显示:新循环燃烧消耗的甲烷量小于供给量,与CO2和H2O重整消耗的甲烷量的变化趋势与反应平衡常数的大小有关。在相同燃料量的条件下,与简单循环相比,新循环的火用效率得到大幅提高,涨幅为5.05%-15.57%。
A new cycle of gas turbine using methane reforming technology is proposed. First, according to the working process of the system, the thermodynamic equilibrium method is used to analyze the thermal equilibrium of the combustion chamber. Secondly, according to the second law of thermodynamics, the changing trend of the new cycle exergy efficiency of the gas turbine is studied. The results show that the amount of methane consumed by the new cycle combustion is less than the supply, which is related to the change of the methane consumption consumed by CO2 and H2O reforming and the magnitude of the reaction equilibrium constant. With the same amount of fuel, the efficiency of the new cycle is significantly increased by 5.05% -15.57% compared with the simple cycle.