摘要
利用英国KBC公司开发的RSIM软件对催化裂化装置建立了模拟模型,考察了原料中金属(Ni,V,Na)、硫、残炭质量分数及新鲜催化剂补充量与提升管出口温度、反应压力对催化裂化性能的影响。结果表明:原料中V,Na对催化剂微反活性影响较大,Na对产品分布影响较明显;原料中大部分硫在催化反应中会转化为硫化氢存在于轻质产品中;当残炭质量分数为4%时,生焦和油浆收率最低,目标产品(液化气、汽油和柴油,下同)收率最高;当新鲜催化剂补充量(以10 min计)为50 kg/min时,生焦收率最低;重质原料在提升管出口温度为485℃、反应压力为259 kPa的优化条件下,汽油收率最高;与轻质原料相比,重质原料产品汽油中烯烃、苯以及液化气中丙烯体积分数均较高,研究法辛烷值较低。
A simulation model of fluid catalytic cracking(FCC)unit was established by RSIM software developed by KBC Company in the UK.The effects of the mass fractions of metals(Ni,V,Na),sulfur,and carbon residue in raw oil,the make-up amount of fresh catalyst,the outlet temperature of riser and reaction pressure on the performance of the fluid catalytic cracking were investigated.The results showed that V and Na in the raw oil had a greater impact on the micro-activity of the catalyst,and Na had a significant influence on the product distribution.Most of the sulfur in the raw oil would be converted into hydrogen sulfide during the catalytic reaction and existed in the light products.When the mass fraction of carbon residue was 4%,the yield of coke and slurry was the lowest,and the yield of the target products(liquefied petroleum gas,gasoline,and diesel,the same below)was the highest.When the make-up amount of fresh catalyst(for 10 min)was 50 kg/min,the yield of coke was the lowest.Under the optimized conditions of the riser outlet temperature of 485℃and the reaction pressure of 259 kPa,the heavy raw oil had the highest gasoline yield.Compared with the light raw oil,the heavy raw oil products had higher volume fractions of olefins and benzene in gasoline,as well as a higher volume fraction of propylene in liquefied petroleum gas,but a lower research octane number.
作者
邰建虎
王营
TAI Jian-hu;WANG Ying(Quanzhou Petrochemical Co Ltd,SINOCHEM,Quanzhou 362000,China)
出处
《石化技术与应用》
2025年第4期324-331,共8页
Petrochemical Technology & Application
关键词
RSIM软件
催化裂化
原料性质
金属质量分数
硫质量分数
残炭质量分数
产品分布
反应条件
RSIM software
fluid catalytic cracking
raw oil property
metal mass fraction
sulfur mass fraction
carbon residue mass fraction
product distribution
reaction condition
作者简介
邰建虎(1995-),男,安徽阜阳人,硕士,助理工程师。主要从事催化裂化工艺的生产与研究工作,已发表论文2篇。
