西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (2): 145-148.DOI: 10.3863/j.issn.1674-

• 油气化学工程与化工 • 上一篇    下一篇

超稠油改质降黏机理研究

吴 川1,2 陈艳玲2 王元庆2 杨 超2   

  1. 1.中国石油大学(华东)石油工程学院,山东 东营 257061; 2.中国地质大学(武汉)材料科学与化学工程学院,湖北 武汉 430074
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20

STUDY ON THE UPGRADING AND VISCOSITY-REDUCING MECHANISM OF ULTRA-HEAVY OIL

WU Chuan1,2 CHEN Yan-Ling2 WANG Yuan-Qing2 YANG Chao2

  

  1. 1.College of Petroleum Engineering,China University of Petroleum (East China),Dongying Shandong 257061,China;2.College of Material Science and Chemistry Engineering,China University of Geosciences (Wuhan),WuhanHubei 430074,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

摘要:

研究了河南超稠油水热供氢催化裂解降黏,以及胜利超稠油水热催化裂解降黏反应机理,结果表明:高温水物化性质的改变有利于稠油水热催化裂解的进行;催化剂不仅使C—S键断裂,而且使C—O键、C—N键也发生了断裂,进一步促进了高温水参与催化裂解反应;在供氢剂与催化剂的协同作用下,供氢剂提供的氢自由基与裂解的基团作用,使聚合反应减弱,生成大分子化合物的量减少,而小分子饱和烃和芳香烃的量则增加,稠油分子的聚集状态发生一定程度的改变;沥青质、胶质中的杂原子含量(如S、O、N)减少,分子之间的相互作用力减弱,氢碳原子比(NH/NC)提高,稠油的黏度进一步降低,品质得到一定程度的改善。

关键词: 超稠油, 水热裂解, 改质, 降黏机理, 催化裂解

Abstract:

Upgrading and viscosity reduction mechanism are studied to the Shengli and Henan ultra-heavy oil in this paper.It′s shown that the physical and chemical properties of water are suitable for aquathermolysis at high temperature.The function of catalyst not only breaks C-S bond,but also breaks C-O and C-N bonds and accelerates the reaction of quathermolysis.The synergism between catalyst and hydrogen donor for the viscosity reduction of ultra-heavy oil,there is H produced in the process of aquathermolysis,and thus the down-hole hydrogenation of heavy oil and upgrading of ultra-heavy oil may take place.The amount of saturate and aromatic hydrocarbon increases,the decrease resin and asphaltene may reduce the viscosity of heavy oil.The percentage of resin,asphalt and S,O,N decrease,and H/C increases after the upgrading process.

Key words: ultra-heavy oil, aquathermolysis, upgrading, viscosity-reducing mechanism, catalyst and cracking

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