作　　者： ; ; ;

机构地区： 中国石油大学北京化学工程学院重质油国家重点实验室

出　　处： 《燃料化学学报》 2009年第3期311-317,共7页

摘　　要： 利用连续式小型提升管催化裂化实验装置研究了原料预热温度、再生剂温度、油剂混合区温度和剂油比等油剂混合区的工艺条件对催化裂化汽油改质的影响规律。结果表明,降低再生剂温度、油剂混合区温度和剂油比均可以降低干气和焦炭的产率,同时也对催化裂化汽油改质的效果产生了影响。其中,再生剂温度对干气和焦炭产率影响最大;剂油比对催化裂化汽油改质的效果影响显著。降低再生剂温度、剂油比和油剂混合区温度一定程度上降低了烯烃转化率、异构烷烃增加率和芳烃增加率。提高原料预热温度可以一定程度上增加烯烃转化率、异构烷烃增加率和芳烃增加率。催化裂化汽油改质油剂混合区的最佳工艺条件为维持一定的反应温度和剂油比,并尽可能降低再生剂温度和提高原料预热温度。 The factors affecting FCC naphtha olefin upgrading, such as the preheating temperature, regenerated catalyst temperature, mix temperature and catalyst to oil ratio in the mix zone were investigated in a continuous pilot riser-type FCC unit. The results showed that low regenerated catalyst temperature, low mix temperature and low catalyst to oil ratio can reduce the yield of coke and fuel gas, but impair the FCC naphtha upgrading effectiveness. The temperature of catalyst regenerated is the main factor that determines the yield of coke and dry gas, while the effectiveness of the FCC naphtha upgrading is mainly dependent on the ratio of catalyst to oil. The decrease of regenerated catalyst temperature, catalyst to oil ratio and mix temperature can reduce the conversion of olefins and the content of aromatics and i-paraffins; while the increase of the preheating temperature give the reverse effect. Therefore, the optimal conditions in the mix zone were high preheating temperature and low regenerated catalyst temperature with a proper reaction temperature and a proper ratio of catalyst to oil.

关 键 词： 催化裂化汽油 烯烃 改质 油剂混合区 反应规律

领　　域： [石油与天然气工程]