关键词: 二元掺混,   , 黏度比,   , 掺入比,   , 黏度预测,   , 模型评价

Abstract: In order to acquire good viscosity prediction model to satisfy and control processes in petroleum and chemical industry, existing models were evaluated by absolute relative error at various viscosity ratios. Eight models were selected to be evaluated in this way. Each model’s prediction characteristics and accuracy were compared and recommendation was made according to different viscosity ratio. The result shows that Arrhenius, Bingham, Kendall model have a bad performance when applied to predict blend viscosity which is not recommended to use. Chevron model is recommended to use when viscosity ratio between 1 and 103. Cragoe model is better than others when viscosity ratio between 103 and 105. Whereas, no model has good prediction performance when viscosity ratio between 105 and 106. Thus, a new model is urgently needed to be developed.

Key words: Binary oil mixture,    ,  Viscosity ratio,    ,  Blend ratio,    ,  Viscosity prediction,   ,  Model evaluation