西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 149-152.DOI: 10.3863/j.issn.1674 – 5086.2011.04.028

• 油气化学工程与化工 • Previous Articles     Next Articles

Effect of Low Temperature Air Oxidation on the Composition of Heavy Oil

TANG Xiao-dong1， 2， SU Xu2， CUI Ying-xian3, 4， YANG Kai2， ZHENG Cun-chuan2   

  1. 1. State Key Laboratory of Oil and Reservoir Geology and Exploitation， Southwest Petroleum University， Chengdu， Sichuan610500， China； 2. School of Chemistry and Chemical Engineering， Southwest Petroleum University， Chengdu， Sichuan 610500，China； 3. Research Institute， CNOOC， Dongcheng， Beijing 100027， China； 4. State Key Laboratory of Offshore Oil Exploitation，Dongcheng， Beijing 100027， China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

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Abstract: In the low-temperature oxidation simulation experiments of Liaohe heavy oil， the change of composition
and nature of gas and heavy oil before and after the oxidation reaction of different system is inspected. The results
demonstrate as follows： The low temperature oxidation reactions occurred between heavy oil and air is oxygen-
addition reactions， which decreases the oxygen content in the gas to 2.71%， consumes 87% of the oxygen in the air，
and increases the acid number and viscosity of heavy oil. Water promoted oxidation of heavy oil makes the resin
content decrease 13.95%， the asphaltene content increase 4.81%， the total resin and asphaltene content decrease，
and the heavy components degrade 17.94%. The naphthenate catalyst system has an excellent catalytic oxidation
activity， which promotes the oxidation and cracking of heavy oil. Water promotes heavy constituent crack in the
low temperature catalytic oxidation reactions occurred between heavy oil and air.

Key words: heavy oil, air injection, low temperature oxidation, catalytic oxidation, group composition30

CLC Number: