加入环戊烷对超临界溶剂脱沥青加工加拿大油砂沥青的影响  

Influence of cyclopentane on supercritical solvent deasphalting behavior of Canadian oil sand bitumen

作　　者：范勐[1] 孙学文[1] 许志明[1] 赵锁奇[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《现代化工》2011年第12期70-74,共5页Modern Chemical Industry

基　　金：国家重点基础研究发展计划("973")资助项目(2010CB226901;2010CB226902);国家国际合作科技计划项目(2008DFA41160)

摘　　要：在超临界溶剂脱沥青耦合脱油沥青喷雾造粒装置上,将加拿大油砂沥青分离为脱沥青油及脱油沥青,通过对比在正戊烷中加入体积分数10%环戊烷前后得到的脱沥青油及脱油沥青性质变化来考察环戊烷对溶剂脱沥青的影响。结果表明,加入环戊烷可以提高脱沥青油质量收率1%～4%,当收率为67%～71%时,2种溶剂得到的脱沥青油性质接近,但是脱油沥青软化点比加入环戊烷之前却可以提高3～13℃,从而能够生产出优异的沥青粉。Canadian oilsand bitumen VTB （Vacuum topped bitumen） is separated into deasphalted oil （DAO） and de-oiled asphalt （DOA） on a supercritical solvent deasphalting and post-extraction asphalt granulation device, n-Pentane and a mixed solvent composed of 10 vol% cycolpentane and 90vol% n-pentane are chosen as the solvent in the experiment. The properties of DAO and DOA are compared to investigate the influence of cyclopentane on solvent deasphalting behavior. It is found that the yield of DAO can raise 1 wt% - 4 wt% when the n-pentane is replaced by mixed solvent. Even though the properties of DAO have no apparent differences for the two kinds of solvents, the DOA softening points obtained with mixed solvent are 3 - 13℃ higher than that of n-pentane. Therefore, the nice asphalt particles could be produced with the mixed solvent composing of cyclopentane.

关 键 词：油砂沥青 溶剂脱沥青 正戊烷 环戊烷 沥青粉 软化点 

分 类 号：TE624[石油与天然气工程—油气加工工程]