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在过去的十余年里,提升管出口短停留时间结构在FCC装置反应部分已形成标准设计。借助于提升管出口短停留时间结构的设置,将有效地抑制过度裂化的发生,从而增加目的产品的收率,但原料的总转化率也将随之降低。寻求某种新的方法,使装置在最佳转化率下操作,一直是炼油工作者所希望的。研究表明,提高催化剂活性是提高短停留时间装置转化率的一种有效途径。特别是对装置的催化剂循环速率受到限制的场合尤为重要。近期的研究表明,增加载体的活性是提高短停留时间装置转化率的有效方法。戴维森公司通过一系列实验分析
In the past decade or so, a short stay-time structure of riser exports has become standard in the FCC unit reactors. With the help of the setting of the short residence time at the outlet of the riser, the occurrence of overcracking will be effectively suppressed and the yield of the target product will be increased, but the total conversion of the raw material will also decrease. It is always the refinery’s hope to find some new way to operate the plant at its optimum conversion rate. Studies have shown that increasing catalyst activity is an effective way to increase the conversion of a short residence time device. In particular, it is particularly important where the catalyst circulation rate of the device is limited. Recent studies have shown that increasing the activity of a carrier is an effective method to increase the conversion of a device with a short residence time. Davidson passed a series of experimental analyzes