Title: Physical vacuum distillation and high temperature simulated distillation of residual oils from different origin

Authors: Ekaterina Nikolaychuk; Anife Veli; Dicho Stratiev; Ivelina Shishkova; Anelia Burilkova; Elisaveta Tamahkyarova; Magdalena Mitkova; Dobromir Yordanov

Addresses: LUKOIL Neftohim, Burgas, Bulgaria ' Prof. Yakimov str., No. 1, Burgas University 'Assen Zlatarov', Burgas, Bulgaria ' LUKOIL Neftohim, Burgas, Bulgaria ' LUKOIL Neftohim, Burgas, Bulgaria ' SGS Bulgaria Ltd., Laboratory Complex, Burgas, Bulgaria ' SGS Bulgaria Ltd., Laboratory Complex, Burgas, Bulgaria ' Prof. Yakimov str., No. 1, Burgas University 'Assen Zlatarov', Burgas, Bulgaria ' Prof. Yakimov str., No. 1, Burgas University 'Assen Zlatarov', Burgas, Bulgaria

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]

Keywords: heavy oil; physical vacuum distillation; HTSD; distillation interconversion.

DOI: 10.1504/IJOGCT.2018.089935

International Journal of Oil, Gas and Coal Technology, 2018 Vol.17 No.2, pp.208 - 221

Available online: 26 Jan 2018 *

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