摘要
利用已建立的重油流动反应模型，对某炼油厂１０６ｔ／ａ催化裂化提升管反应器实施反应终止剂技术的不同方案进行了数值模拟．为该技术的实施解决了２个关键问题，即确定了注入位置，选取了终止剂和注入量．结果表明，终止剂注入改变了提升管反应器内的流动和反应温度的分布，从而改变了裂化反应的历程．不同程度地降低了提升管中上部的温度，使轻质油收率提高，气体、焦炭产率下降，得到了较好的产品分布．以水为终止剂，从降温和终止反应的角度来看，效果是好的，且分段降温更有利．
Numerical simulation on various schemes to implement reaction terminating technique on a typical commercial RFCC riser reactor was carried out by employing the developed flow reaction model of RFCC riser reactors. Two crucial problems for implementation of the reaction terminating technique could be solved by the numerical simulation, which are the determination of the injection positions and the kinds of reaction terminating media. Meanwhile, it could give a better operation scheme and supply the theoretic analyzing data with instructiveness in advance. The results had shown that the flow pattern, catalyst distribution and local and general distribution of reaction temperature were changed by injecting reaction terminating media and the course of catalytic cracking was changed sequentially. A increase of light oil yields, a decrease of gas and coke yields and a good product distribution could be achieved by way of reducing the temperature within the middle upside of riser reactors. Water as a reaction terminating medium is good from the viewpoint of temperature falling and reaction terminating and it was more favorable for the reaction temperature to be reduced by degrees.
出处
《大庆石油学院学报》
CAS
北大核心
1999年第1期35-39,共5页
Journal of Daqing Petroleum Institute
关键词
催化裂化
或管反应器
数值模拟
反应终止剂
catalytic cracking, riser reactors, numerical simulation, reaction terminating agents, injecting position
