印尼油砂沥青的净化工艺  

Purification of Indonesian oil sands bitumen

作　　者：罗宽勇 韩冬云[1] 李福起 石薇薇[1] 庞海全 曹祖宾[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]中海油(青岛)重质油加工工程技术研究中心有限公司,山东青岛266500

出　　处：《化工进展》2016年第12期3885-3890,共6页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金项目(21276253)

摘　　要：溶剂萃取法分离油砂制得油砂沥青中含大量机械杂质,影响沥青的品质及后期加工利用。通过XRD和激光粒度仪表征了机械杂质的矿物组成和粒度分布等特性。针对机械杂质的特性,开发了复配试剂,通过稀释剂降黏沥青、复配试剂净化沥青、稀释剂回收再生及循环利用3个操作单元对油砂沥青进行了脱杂净化实验,并分析了净化机理。结果表明:降黏过程,温度70℃、时间10min、稀释剂与沥青比0.3g/g,稀释沥青70℃黏度为3.2Pa·s;净化过程,6%盐酸与稀释沥青比0.2m L/g、Ca Cl2与稀释沥青比0.01g/g,温度70℃,混合时间10min,沉降时间20min,机械杂质脱除率可达到93.5%;回收及循环过程,稀释剂回收率为98%,循环使用5次,机械杂质脱除率仍92%以上。该工艺具有沉降时间短、机械杂质脱除彻底的优点。Oil sands bitumen obtained from solvent extraction contained a great amount of mechanical impurities（MI）,which was harmful to the post processing of bitumen.The characterization of mineral components of MI by XRD and particle size distribution of MI by laser particle analyzer were presented.Compound reagent was developed for the removal of MI and the reaction mechanism was presented.The technology consisted of three steps,namely,dilution of bitumen by diluent（P1）,purification of diluted bitumen by compound reagent（P2）and recovery of diluent（P3）.In P1,under the optimal reaction conditions of 70℃,10 min,m（diluent）/m（bitumen）=0.3g/g,the viscosity of diluted bitumen at 70℃ was 3.2Pa·s.In P2,under the optimal reaction conditions of V（HCl,6%）/m（diluted bitumen）=0.2m L/g,m（Ca Cl2）/m（diluted bitumen）=0.01g/g,70℃,mixing time 10 min,settling time 20 min,the mechanical impurities removal rate（MIRR）could reach 93.5%.In P3,the recovery rate of diluent was 98%,MIRR remained above 92% after diluent being recycled 5 times.The technology has the advantages of short settling time and thorough removal of MIRR in bitumen.

关 键 词：油砂沥青 机械杂质 表征 复配试剂 净化 

分 类 号：TE624.5[石油与天然气工程—油气加工工程]