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本文研究了在脉冲微型反应装置上乙烷-丙烷混合裂解反应。反应条件范围为:温度700—825℃,停留时间0.04—2.0 s,进口压力1.05—1.3atm,混合进料的稀释比为N_2:(C_2H_6+C_3H_8)=1:1.25,混合原料中乙烷与丙烷之间的相对比C_2H_6:C_3H_8=1:0—O:1。本文研究了混合烃中各组份之间在混合裂解过程中的相互作用,提出了一个由十八个反应组成的自由基反应机理模型,并进行了动力学参数估值。由此模型计算的裂解产物分布和选择性与文献值较为吻合。本文研究结果对于以油田气和天然气资源为裂解原料指出了经济利用的途径。
In this paper, we studied the ethane-propane mixed pyrolysis reaction in a pulsed micro-reactor. The reaction conditions range: temperature 700-825 ℃, residence time 0.04-2.0 s, inlet pressure 1.05-1.3atm, mixed feed dilution ratio N_2: (C_2H_6 + C_3H_8) = 1: 1.25, mixed feed ethane and Propane relative ratio between C_2H_6: C_3H_8 = 1: 0-O: 1. In this paper, we study the interaction between the components in a mixed hydrocarbon during the mixed pyrolysis, propose a model of radical reaction composed of eighteen reactions, and estimate the kinetic parameters. The distribution and selectivity of pyrolysis products calculated by this model are in good agreement with the literature values. The results of this paper point out the ways of economic utilization based on oil gas and natural gas as cracking raw materials.