摘要
以镧盐和醇胺类化合物为原料,采用有机配合方法,在高温回流条件下,可制备含镧质量分数为11.4%,密度(20℃)为1.253 g/cm^3的镧基钝钒剂。在催化裂化(FCC)原料油中加入质量分数为150×10^(-6)的镧基钝钒剂,选用LDO-75平衡剂为催化剂,在提升管装置中对其钝化效果进行了评价。结果表明:镧基钝钒剂加入18.0 h后,与未添者相比,转化率提高了0.75个百分点,汽油和柴油收率分别提高了1.05,0.62个百分点,重油收率下降了1.36个百分点,有效抑制了原料油中钒组分对催化剂的污染。
With the lanthanum salts and alcohol-amine compounds as raw materials, a La-based passivator for vanadium with a mass fraction of 11.4%of La and density of 1.253 g/cm^3(20 ℃) was prepared by the organic blending method under high-temperature reflux condition.In a riser device of fluid catalytic cracking, the passivation effect was evaluated by employing LDO-75 equilibrium catalyst when the mass fraction of 150×10^-6 of passivator was added to raw oil. The results showed that compared to the unadded passivator,after adding the passivator for 18.0 h, its conversion rate increased by 0.75 percentage points, yield of gasoline and diesel rose by 1.05 and 0.62 percentage points respectively, and yield of heavy oil decreased by 1.36 percentage points, which effectively prohibited the pollution of catalyst caused by vanadium components in the raw oil.
作者
李博
李长明
黄剑锋
赵玉龙
LI Bo;LI Chang-ming;HUANG Jian-feng;ZHAO Yu-long(Lanzhou Petrochemical Research Center,PetroChina,Lanzhou 730060,China;No.1 Chemical Plant of Daqing Petrochemical Company, PetroChina, Daqing 163714, China.)
出处
《石化技术与应用》
CAS
2019年第3期176-179,共4页
Petrochemical Technology & Application
基金
中国石油石油化工研究院资助项目(项目编号:15-yk-01-02)
关键词
催化裂化
钝化剂
镧基
钝钒
催化活性
fluid catalytic cracking
passivator
La-based
passivation for vanadium
catalytic activity
