沙特减压渣油临氮热反应过程中沥青质聚集体尺寸变化研究

张龙力; 刘动动; 赵愉生; 杨国华; 杨朝合; 邢雪青

沙特减压渣油临氮热反应过程中沥青质聚集体尺寸变化研究

1.
中国石油大学(华东) 重质油国家重点实验室, 山东青岛 266580;
2.
日照中燃船舶燃料供应有限公司, 山东日照 276826;
3.
中国石油天然气股份有限公司石油化工研究院, 北京 100195;
4.
中国科学院高能物理研究所同步辐射实验室, 北京 100049

基金项目: 国家自然科学基金(20776160); 中石油重大科技专项专题(固定床渣油加氢处理催化剂研究开发); 中国石油大学(华东)"青年教师拔尖人才建设工程"基金; 重质油国家重点实验室开放课题。

详细信息

通讯作者:
张龙力(1974-),男,河南镇平人,博士,副教授,从事物理化学、石油化学研究,E-mail:llzhang@upc.edu.cn。

中图分类号: TE62
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出版历程
- 收稿日期: 2012-04-19
- 修回日期: 2012-06-29
- 刊出日期: 2013-01-31

Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere

1.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum(East China), Qingdao 266580, China;
2.
China Marine Bunker Supply(Rizhao) Co. Ltd., Rizhao 276826, China;
3.
Petrochemical Research Institute, CNPC, Beijing 100195, China;
4.
Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 将沙特轻质原油的减压渣油在395℃临氮条件下进行热反应,利用在线取样装置得到不同热反应时间的样品,借助小角X射线散射(SAXS)技术,测定了各液相残渣油中沥青质聚集体尺寸。结果表明,热反应生焦诱导期的初期沥青质聚集体的尺寸逐渐减小,为29~21 nm;在生焦诱导期后期,其尺寸急剧增大,在热反应进行到150 min时达到43 nm;达到生焦诱导期后,沥青质聚集体尺寸变化较小,在46~42 nm变化。在渣油热反应过程中沥青质聚集体的尺寸受沥青质热裂解、沥青质解缔和缔合等过程的共同影响,与沥青质含量无明显关系。
- 减压渣油 /
- 热反应 /
- 生焦率 /
- 沥青质聚集体尺寸
Abstract: Vacuum residue from Saudi Arabia light crude oil (ALVR) was thermally reacted at 395℃ under the atmosphere of nitrogen. Thermal reaction samples were obtained by online sampling device at different reaction times, and the asphaltene aggregate size was determined by small-angle X-ray scattering (SAXS) measurements. The aggregate size of asphaltene decreases from 29~21 nm in the initial stage of coke induction period; during later stage of coke induction period, the asphaltene aggregate size increases rapidly and reaches to 43 nm when thermal reaction time reaches to 150 min. After the stage of coke induction period, the asphaltene aggregate size changes little and is in the range of 46~42 nm. In the thermal reaction process of residue, the aggregate size of asphaltene is jointly affected by the thermal cracking and association-disassociation of asphaltene, but does not show obvious relationship with asphaltene content.
- vacuum residue /
- thermal reaction /
- coke ratio /
- asphaltene aggregate size

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参考文献(19)

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