摘要
当前社会对燃气的需求量巨大,通过可再生能源产生的氢气可以作为供给终端用户的燃料,但由于修建纯氢气的输运管道存在投资成本较高的问题,因此,通常选择将氢气掺入天然气管道进行输送应用。使用Chemkin-Pro软件对甲烷掺氢层流预混燃烧进行模拟,从化学动力学的角度探究掺混氢气对火焰的影响。结果表明:随着氢气比例的提高,火焰温度提高,但幅度不大,而当量比对燃烧温度的影响相对更大。掺氢后CO浓度的减少是因为甲烷的含量减少,掺混氢气后火焰燃烧速度增加。研究成果可为氢气掺混天然气的应用提供一定参考。
At present, there is a huge demand for gas in the society, and hydrogen produced by renewable energy can be used as fuel for end users. However, due to the high investment cost of building pure hydrogen pipeline, hydrogen is usually mixed into natural gas pipeline for transportation and application. Chemkin-Pro software was used to simulate the laminar premixed combustion of methane mixed with hydrogen, and the influence of hydrogen on flame was explored from the angle of chemical kinetics. The results show that with the increase of hydrogen ratio, the flame temperature increases, but the amplitude is not large, while the equivalent ratio has a greater influence on the combustion temperature.The decrease of CO concentration after adding hydrogen is due to the decrease of methane content and the increase of flame burning speed after adding hydrogen. The research results of this paper can provide some reference for the application of hydrogen blended with natural gas.
出处
《节能》
2022年第8期62-65,共4页
Energy Conservation
