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通过电加热实验研究正辛烷在模拟再生冷却通道(内径为2 mm)内的超临界热裂解反应,考察了正辛烷在高压(5 MPa)和高温(560~665℃)条件下的裂解产物及停留时间的沿程分布。通过引入C5~C11组分的二次裂解反应,修正了Ward等提出的正烷烃裂解PPD动力学模型。通过对模型预测值与实验值的对比,验证了修正PPD裂解模型的可靠性。
The supercritical pyrolysis reaction of n-octane in simulated regeneration cooling channel (inner diameter 2 mm) was studied by means of electric heating experiment. The cracking of n-octane under high pressure (5 MPa) and high temperature (560 ~ 665 ℃) Products and residence time distribution along the way. By introducing the second cleavage reaction of C5 ~ C11, the kinetic model of n-alkane cracking PPD proposed by Ward et al. Was modified. The reliability of the modified PPD pyrolysis model is verified by comparing the model predicted value with the experimental value.