煤柴油中压加氢裂化装置掺炼劣质催化裂化柴油的实践  

INDUSTRIAL PRACTICE OF SR DIESEL BLENDING WITH FCC LCO AS MEDIUM PRESSURE HYDROCRACKING FEED

作　　者：赵晨曦 杨杰 李保良 Zhao Chenxi;Yang Jie;Li Baoliang(CNOOC Huizhou Petrochemical Company,Huizhou,Guangdong 516086)

机构地区：[1]中海油惠州石化有限公司,广东惠州516086

出　　处：《石油炼制与化工》2018年第11期40-44,共5页Petroleum Processing and Petrochemicals

摘　　要：为提高催化裂化柴油(简称催化柴油)品质及优化全厂物料平衡,中海油惠州石化有限公司在3.6 Mt/a煤柴油中压加氢裂化装置上进行了大比例掺炼劣质催化裂化柴油的实践。结果表明:在不改变装置结构及催化剂已运转8年半的条件下,催化柴油掺炼比例(w)达21%,装置整体运行平稳;装置综合能耗由777.121MJ/t增加至952.315MJ/t;重石脑油、喷气燃料和柴油产品质量合格;与不掺炼催化柴油相比,掺炼21%催化柴油后,喷气燃料的收率降低11.99百分点,烟点减小4.6mm,密度(20℃)增大12.8kg/m^3,芳烃体积分数增加8百分点;与原料相比,柴油产品的十六烷值提高16.4个单位,但与掺炼前相比,十六烷值降低5.5个单位,收率增加8.29百分点。催化柴油掺炼比例提高后,国Ⅴ标准柴油的收率提高,满足了柴油产品质量升级要求,同时为大型炼油厂优化全厂物料平衡提供了新途径。The technology of processing mixed feed of SR diesel and FCC diesel was commercially applied in a 3.6 Mt a kerosene-diesel medium-pressure hydrocracking unit of CNOOC Huizhou Petrochemical Company.The catalyst has been running for 8 and half years without changing the structure of the device.However,even the mixing ratio is up to 21%(w),the device ran smoothly in such conditions,the comprehensive energy consumption increased from 777.121 MJ t to 952.315 MJ t.The qualities of heavy naphtha,jet fuel and diesel products are all on spec.Compared with the kerosene-diesel feed case,the yield of jet fuel decreased by 11.99 percentage points,and the smoke point decreased by 4.6 mm,the density(20℃)was increased by 12.8 kg m 3 and the volume fraction of the aromatic was increased by 8 percentage points;the cetane number of the diesel is 16.4 higher than the blending feed itself,but 5.5 lower than the diesel before blending,while the yield increased by 8.29 percentage points.The technology raises the volume of ChinaⅤdiesel,satisfy the need of the company and provide a new way for the large refinery to optimize the material balance.

关 键 词：中压加氢裂化 催化裂化柴油 掺炼 产品质量 能耗 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]