循环比对塔河常压渣油延迟焦化工艺过程的影响  

INFLUENCE OF RECYCLE RATIO ON DELAYED COKING OF TAHE ATMOSPHERIC RESIDUE

作　　者：王洪彬[1] 韩海波[1] 江莉[1] 黄新龙[1] 

机构地区：[1]中国石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南洛阳471003

出　　处：《石油炼制与化工》2016年第1期58-61,共4页Petroleum Processing and Petrochemicals

摘　　要：以塔河常压渣油为原料,在中国石化炼化工程(集团)股份有限公司洛阳技术研发中心开发的在线循环延迟焦化中型试验装置上考察了循环比对其产品分布和产品性质的影响。结果表明:当循环比由0.92降低到0.39时,气体和焦炭的产率分别降低了1.71和2.57百分点,而液体产品的收率则增加了4.17百分点,液体产品收率的增加主要表现在焦化蜡油收率增加了8.97百分点;降低循环比后焦化蜡油的性质变差,密度(20℃)由918.0 kg/cm^3上升到938.3 kg/cm^3,残炭由0.03%增加到0.25%,95%馏出温度由390℃提高到463℃,尽管这会增加其加氢精制的难度,但仍可作为加氢处理工艺的掺兑原料。The influence of recycle ratio on product distribution and properties of delayed coking process of Tahe atmospheric residue （Tahe AR） was studied in a pilot plant designed by R＆D Center of Engineering and Technology of SINOPEC Engineering （Group） Co. Ltd. The results show that when the recycle ratio decreases from 0.92 to 0. 39, the yields of gas and coke reduced by 1.71 and 2.57 percent points, however the yield of liquid product increases by 4.17 percent points that benefit from the yield of coker gas oil （CGO） which increases 8.97 percent points. The reduction of the recycle ratio results in poor quality of CGO. Its density increases from 0. 918 0 g/cma to 0. 938 3 g/cma , carbon residue enhances from 0.03% to 0. 25%, and the distillation temperature of 95% increases from 390 ℃ to 463 ℃. The CGO can be used as a component of mixed feed for hydrotreating process, though the difficulty of hydrotreating is enhanced.

关 键 词：塔河常压渣油 延迟焦化 循环比 液体收率 焦化蜡油 

分 类 号：TE624.32[石油与天然气工程—油气加工工程]