摘要
应用Aspen HYSYS软件对中国石化洛阳分公司700 kt/a连续催化重整(简称重整)装置进行流程模拟,得到了与装置实际操作接近的理想模型。通过模型对重整预加氢分馏塔(C101)操作参数、重整生成油换热流程进行优化,并模拟反应温度对重整汽油辛烷值桶、芳烃收率、纯氢收率等产品指标及积炭速率的影响。结果表明:优化后重整进料中C 5组分的质量分数由优化前的3.06%降至2.40%,C101塔底再沸炉瓦斯耗量减少94 m^3/h;优化重整生成油换热流程后,重整脱戊烷油热供芳烃温度由70℃提高至95℃,下游芳烃装置3.5 MPa蒸汽耗量降低2 t/h,重整生成油脱戊烷塔塔底再沸炉瓦斯耗量减少20 m^3/h,C101塔顶两台空气冷却器停运,节电248 kW·h;结合装置烧焦能力,确定了重整装置适宜的反应温度为520℃。通过上述优化措施,连续重整装置效益可增加1358万元a。
Aspen HYSYS software was used to simulate the process of 700 kt/a continuous reforming unit in SINOPEC Luoyang Company.The ideal model which closed to the actual operation of the device was obtained.The model was used to optimize the operating parameters of the pre-hydrogenation fractionator(C101)and the heat exchange process of the reformate.The effects of reaction temperature on the octane number barrel of reformed gasoline,aromatics yield,hydrogen yield,and carbon deposition rate were simulated.After optimization,the content of C 5 component in the reformer feed decreased from^3.06%to 2.40%,the gas consumption of reboiler at the bottom of the C101 was reduced by 94 m^3/h,the temperature of reformer depentanizer oil,supplied to aromatics extraction unit,increased from 70℃to 95℃by optimized heat exchange process,the 3.5 MPa steam consumption in downstream aromatics unit reduced by 2 t h,and the fuel gas consumption of C201 reduced by 20 m^3/h.Besides,two air-cooled devices at the top of C101 tower were shut down,saving 248 kW·h of electricity power.Combined with the coke burning capacity of the reformer,the suitable reaction temperature of the reformer was determined to be 520℃.Through the above optimization measures,the continuous reforming unit can increase the benefit by 13.58 million Yuan a.
作者
宋举业
贺黎明
杨彩娟
张英哲
张悦
王兴智
Song Juye;He Liming;Yang Caijuan;Zhang Yingzhe;Zhang Yue;Wang Xingzhi(SINOPEC Luoyang Company,Luoyang,Henan 471012;Process Control Division,Petro-Cyber Works Information Technology Company Limited)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2021年第1期111-117,共7页
Petroleum Processing and Petrochemicals
关键词
流程模拟
连续重整
节能降耗
换热优化
process simulation
continuous catalytic reforming
energy saving
heat transfer optimization
