化工进展

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沥青质中金属的超声和均相络合萃取脱除

张龙力1,杨国华1,阙国和1,杨朝合1,山红红1,李志宏2   

  1. (1中国石油大学重质油国家重点实验室,山东 青岛 266555;2中国科学院北京高能物理研究所同步辐射实验室,北京 100039)
  • 出版日期:2011-03-05 发布日期:2011-03-05

Demetallation of asphaltene by ultrasonic or complexation extraction in single phase

ZHANG Longli1,YANG Guohua1,QUE Guohe1,YANG Chaohe1,SHAN Honghong1,LI Zhihong2   

  1. (1State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266555,Shandong,China;2Facility of Synchrotron Radiation,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039,China )
  • Online:2011-03-05 Published:2011-03-05

摘要:

研究了均相络合萃取、超声作用水洗以及超声作用下的均相络合萃取对于沥青质中NiCa元素的脱除。结果表明,络合常数大的络合剂的脱金属效果较好;超声作用有利于沥青质中NiCa元素的脱除。以上几种方法虽然对Ni的脱除效果不好,脱除率只在5%以下;但是对Ca的脱除效果较好,可以达到90%。表明沥青质中NiCa的存在形式应该是不一样的,Ni以较紧密、牢固的形式存在,而Ca以不太牢固的形式存在。

Abstract:

Demetallation of asphaltene was studied. The methods of single phase complexation extractionwater washing under ultrasonic irradiationand single phase complexation extraction under ultrasonic irradiation were compared. The metals studied included nickel and calcium. The result revealed that ultrasonic irradiation was helpful for demetallation. Furthermorethese processes were effective in removing calciumbut not so prominent for removing nickel. The result indicated that calcium and nickel existed differently in asphaltene. Nickel was firmly fixedbut calcium was loose.

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