催化裂化反应-再生系统多稳态现象主要是由再生器内燃烧反应的放热性及反应器与再生器之间的耦合关系引起的。在基于基准假组分催化裂化装置反应-再生系统稳态模型的基础上，通过在再生催化剂传输斜管上安装换热器，并对换热器所得数据进行处理，绘制热量曲线，进而确定系统的稳态操作点。实验结果表明，在实际可操作范围内系统存在2个稳态操作点；改变催化剂与原料油的质量比、燃烧空气温度和进料温度，稳态点的个数不变，位置发生偏移。%The behavior of the multiple steady states of reactor and regenerator system in a fluid catalytic cracking unit(FCCU) was usually due to the exothermicity of the catalyst regeneration reactions and to the strong interaction between the reactor and the regenerator. On the basis of the steady-state simulation of the reactor and regenerator system in FCCU based on standard pseudo-components,through installing a heat exchanger on the regenerated catalyst transmission pipe, processing the data from the heat exchanger and plotting heat curves,two steady states were found. It was showed that,under the actual operating conditions, changing the catalyst-to-oil ratio(COR), combustion air temperature and feeding temperature could influence the position of the steady states, but could not affect the number of the steady states.
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