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一、简介金属敝焰少无氧化加热:其燃料是在空气消耗系数不足的条件下进行燃烧的,在燃烧产物中不仅含有 CO_2、H_2O、N_2,还含有大量可燃成份,如 H_2、CO、CH_4等和游离的碳黑。这就意味着,不完全燃烧除了进行可燃成份的氧化反应外,还存在着气体之间的平衡反应和某些组份的分解反应。此外燃烧产物成份与燃烧温度决定于部分化学潜热和空气及燃料预热带入的物理热。因此不完全燃烧产物成份的计算比完全燃烧计算复杂得多。不少人进行了这方面的分析研究,如 B·Φ柯培托夫计算法,这一方法是基于物质平衡定律,并假定燃烧产物中没有甲烷和固体炭,此计算对工程上有一定的精确性,但此项假定对高碳氢化合物燃料,如:燃料油、天燃气,石油液化气等则有一定的误差,因为在这些燃料的燃烧产物中含有残留的甲烷和析出的固体炭。
First, the introduction Metal flame less less non-oxidation heating: the fuel is in the air consumption factor under the conditions of combustion, the combustion products contain not only CO_2, H_2O, N_2, but also contains a large number of combustible components, such as H_2, CO, CH_4 Etc. and free carbon black. This means that incomplete combustion, in addition to the oxidation of flammable components, involves the equilibrium reaction between gases and the decomposition of certain components. In addition, the composition of the combustion products and the combustion temperature are determined by the partial chemical latent heat and the physical heat introduced by air and fuel preheating. Therefore, the calculation of incomplete combustion product composition is much more complicated than the complete combustion calculation. Many people have conducted analytical studies in this area, such as the B · Φ Kopitov calculation method, which is based on the law of material balance and assumes that there is no methane and solid char in the combustion products. This calculation has a certain degree of engineering Accuracy. However, this assumption has certain errors in high-hydrocarbon fuels such as fuel oil, natural gas, liquefied petroleum gas and the like because the combustion products of these fuels contain residual methane and precipitated solid carbon.