Abstract: An approach for determining ignition temperature of adiabatic fixed-bed reactors is suggested. A phase plane of dimensionless temperature θ and of dimensionless concentration is used to show both the ignition curve and the extinction curve of a single catalyst pellet. Also expressed in the phase plane is the trajectory depicting the deepening of the reaction, the trajectory being the operating line of the reactor. This trajectory is a straight line, the slope of which is always -45°. The reactor definitely ignites once the trajectory touches the catalyst ignition curve. A kinetics-free approach is recommended which enables precise determination of critical inlet temperature causing reactor ignition. Zero-order assumption can be securely made because only very limited error is brought about. In the meantime, experimentation is greatly simplified.

摘要： 本文建议了一种确立绝热固定床反应器着火温度的方法.无因次温度θ和无因次浓度(?)组成的两相平面可以用来表示单个催化剂的着火线和熄火线.同时也可以在该平面上画出表示反应进程的轨迹——反应器操作线.此操作线为一直线,其斜率始终为—45°,当它触及着火线即表明反应器的着火.本文推荐一个无需动力学的准确测定但可确立使反应器着火的临界进口温度的简单方法.可以假定反应为拟零级而仅引起极有限的误差,从而使实验简化.