密闭容器内碳氢燃料爆炸压力计算方法的对比研究

Comparative Study of Calculation Method of Hydrocarbon Fuel Explosion Pressure in Closed Vessel

为了研究碳氢燃料爆炸压力计算方法之间的差别与联系,本文通过三种方法来计算和比较爆炸压力,即:物理化学法、热力学计算方法、化学平衡计算法。通过对甲烷、乙烷、丙烷、乙烯、丙烯、丁烯等典型碳氢燃料的计算,发现化学平衡法计算结果最大,物理化学法次之,热力学方法计算结果最小。随着烷烃分子质量的增加,爆炸压力也增加,而随着分子质量的增加,烯烃爆炸压力减小。计算方法可以推广到更多的碳氢燃料,对爆炸压力的理论计算与比较具有重要的参考意义。

In order to study the difference and contact between the calculation methods of hydrocarbon fuel explosion pressure, this paper take three methods to calculate and compare the explosion pressure, namely: physical chemistry calculation method, thermodynamic calculation method and chemical equilibrium calculation method. Through the calculation of several typical hydrocarbon fuels such as methane, ethane, propane, ethylene, propylene and butane, the results found that chemical equilibrium calculation method get the largest results, followed by physical chemistry calculation method, thermodynamics calculation get the minimum results. With the increasing number of carbon atoms, explosion pressure of alkanes increases, but with increasing number of carbon atoms, the explosion pressure of olefin is reduced. These Calculation methods can be extended to more hydrocarbon fuels, and it has an important reference value for theoretical calculation and comparison of the explosion pressure.