应用甲烷自热重整技术的燃气轮机循环火用分析

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%。

Exergy Analysis of a Gas Turbine Cycle by Using the Methane Self-heat Reforming Technology

Presented was a new gas turbine cycle by using the methane reforming technology.Firstly,according to the working process of the system,the heat balance of the reaction inside the combustor was analyzed by using the thermodynamic balance method.Secondly,based on the second law of the thermodynamics,the variation tendency of the exergy efficiency of the new gas turbine cycle was studied.The research results show that the amount of methane consumed in the combustion in the new cycle is smaller than that supplied,depending on the variation tendency of the amount of methane consumed in reforming of CO2 and H2O and the reaction equilibrium constant.Under the condition of a same fuel consumption rate,compared with a simple cycle,the exergy efficiency of the new cycle increases greatly,up by 5.05%-15.57%.