Physical vacuum distillation and high temperature simulated distillation of residual oils from different origin Online publication date: Mon, 26-Feb-2018
by Ekaterina Nikolaychuk; Anife Veli; Dicho Stratiev; Ivelina Shishkova; Anelia Burilkova; Elisaveta Tamahkyarova; Magdalena Mitkova; Dobromir Yordanov
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 17, No. 2, 2018
Abstract: High temperature simulated distillation (HTSD) of residual oils is not only faster but also more precise than the physical vacuum distillation (ASTM D-5236). However, the HTSD ASTM D-7169 method could report wrong results if it is not performed properly. A verification of the correctness of the HTSD analysis could be accomplished by comparison of the HTSD curve with the one of the physical vacuum distillation methods (ASTM D-1160 or ASTM D-5236). The calibration blend, design of the liner, the GC inlet temperature, and the concentration of heavy oil sample in CS2 were found to have a considerable impact on the correctness of the reported results. The conversion of HTSD in ASTM D-5236 developed in this work is able to predict the distillation curve of the ASTM D-5236 vacuum distillation with almost the same precision as its repeatability of the method. [Received: January 25, 2016; Accepted: June 23, 2016]
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