煤/油加氢共炼产品中沥青质结构与性质分析  

ANALYSIS OF STRUCTURES AND PROPERTIES OF ASPHALTENE ISOLATED FROM COAL/OIL CO-PROCESSED PRODUCT

作　　者：秦勇[1] 杨腾飞[1] 李传[1] 邓文安[1] Qin Yong;Yang Tengfei;Li Chuan;Deng Wen’an(State Key Laboratory of Heavy Oil Processing,China University of Petroleum(East China),Qingdao,Shandong 266580)

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛266580

出　　处：《石油炼制与化工》2018年第2期69-73,共5页Petroleum Processing and Petrochemicals

基　　金：国家自然科学青年基金项目(21106186);山东省重点研发计划项目(2015GGX107014)

摘　　要：以一种褐煤和马瑞常压渣油(MRAR)为原料,在高压釜内进行煤/油加氢共炼反应,从产品中分离出了正庚烷沥青质(C_7-Asp),通过元素分析、XRD、FT-IR、XPS等手段对该沥青质的结构和官能团性质进行了表征。结果表明:该沥青质的H/C原子比较低,富含稠环芳烃;杂原子中O含量较高,杂原子官能团间存在一定的氢键缔合作用。与原料油中的正庚烷沥青质相比,该沥青质烷基链较短,芳香片层间距降低,并以C—C、C—H结构为主。杂原子官能团中,O主要以羰基形式存在,S主要以噻吩形式存在,N主要以吡啶和吡咯的形式存在,该沥青质表面更趋于碱性。A mixture of lignite and Merey atmospheric residue(MRAR)was co-processed under hydrogen in an autoclave.The n-heptane asphaltene(C 7-Asp)was isolated from the product.Its structure and functional groups were investigated by element analysis,XRD,FT-IR and XPS.Results showed the H C of C 7-Asp was lower and rich in polycyclic aromatic compounds.The content of O was the highest in heteroatoms,and there are certain hydrogen bonds between functional groups.Compared with the asphaltene isolated from MRAR,the C 7-Asp has a shorter side chain and smaller aromatic slice spacing.The main functional groups of C 7-Asp are C-C,C-H.O,S and N exist mainly in the form of carbonyl,thiophene,pyridine and pyrrole,respectively.The C 7-Asp surface tends to be more alkaline.

关 键 词：煤 油共炼 沥青质 结构 官能团 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]