西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (1): 159-164.

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

Research on Patterns for Gum Formation of Gasoline Compositions

Ren Lianling1, Xiong Chunhua1, Wen Liang1, Si Xianbao2   

  1. 1. Petrol-Oil and Lubricants Research Institute of General Logistics Department，PLA，Mentougou，Beijing 102300，China2. Oil Technician Training Team of Jinan Military Region，Jinan，Shandong 250022，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-01 Published:2012-02-01

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Abstract: Variance patterns and influencing factors of motor gasoline compositions’ existent gum are examined by means
of 43 ℃accelerated storage test method. The linear regression equation between the existent gum and the storage time are
established by the least square method. Correlation of the existent gum formation rate and chemical constitution are investigated
with the correlation analysis method. Results indicate that most compositions’ existent gum has a linear relationship with the
storage time，obvious correlation existing between existent gum formation rate“k ”and hydrocarbon composition，in which
the maximal acceleration of existent gum producing is incurred by cyclic and isomeric olefins，while the maximal inhibition by
paraffin hydrocarbons. Aromatic hydrocarbons’ effect on existent gum is not obvious. Existent gum is relevant to acidity and
colority.

Key words: gasoline composition, existent gum, correlation analysis, least square method

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