Setembro 2018 vol. 1 num. 5 - XXII Congresso Brasileiro de Engenharia Química

Oral - Open Access.

Idioma principal

ON THE USE OF MODULATED TEMPERATURE DIFFERENTIAL SCANNING CALORIMETRY TO ASSESS WAX CRYSTALLIZATION IN CRUDE OILS. PART II: COMBINING RHEOMETRY, MICROSCOPY AND MODULATED TEMPERATURE DIFFERENTIAL SCANNING CALORIMETRY

PAIVA, F. L ; CALADO, V. M. A ; MARCHESINI, F. H ; , ;

Oral:

It has long been known that wax crystallization during crude oil production and transportation can cause flow assurance issues that give rise to nonproductive times and increase in costs. In this first part of the present work, measurements of the Wax Precipitation Temperature (WPT) of waxy crude oil samples, by a type of Modulated Temperature Differential Scanning Calorimetry (SSDSC), are reported. In this first part, we assess the suitability of SSDSC to measure the WPT of three Brazilian crude oil samples. Repeatable and reliable measurements of WPT by SSDSC are found to depend on specific experimental cooling parameters used with this technique. When appropriate parameters are used, two exothermic peaks can be detected on the non-reversing component and one peak on the reversing component (RC) of SSDSC thermograms. Furthermore, comparisons of WPT determination by SSDSC and by conventional DSC analysis show the potential of SSDSC in obtaining comparable and more reliable WPT measurements depending on crude oil composition and SSDSC cooling parameters.

Oral:

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Palavras-chave: CRYSTALLIZATION,

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DOI: 10.5151/cobeq2018-CO.022

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Como citar:

PAIVA, F. L; CALADO, V. M. A; MARCHESINI, F. H; , ; "ON THE USE OF MODULATED TEMPERATURE DIFFERENTIAL SCANNING CALORIMETRY TO ASSESS WAX CRYSTALLIZATION IN CRUDE OILS. PART II: COMBINING RHEOMETRY, MICROSCOPY AND MODULATED TEMPERATURE DIFFERENTIAL SCANNING CALORIMETRY", p. 4155-4158 . In: . São Paulo: Blucher, 2018.
ISSN 2359-1757, DOI 10.5151/cobeq2018-CO.022

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