Study of temperature effect on asphaltene precipitation by visual and quantitative methods
Asphaltene precipitation is one of conventional problem in crude oil production and refining process. Changes in temperature, pressure and composition are the main factors causing asphaltene instability. Pressure effect is studied in many literatures but temperature effect remains obscure yet. The onset pressure for asphaltene precipitation can be obtained by spectroscopy techniques such as transferring near...
A new viscosity-temperature relationship for vegetable oil
This study proposes four relationships of dynamic viscosity temperature dependence forvegetable oils. The purpose of this study was to find a polynomial or exponentialdependence between temperature and dynamic viscosity of vegetable oil, using...