کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
230933 1427409 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of water properties on the degradative extraction of asphaltene using supercritical water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of water properties on the degradative extraction of asphaltene using supercritical water
چکیده انگلیسی

An extraction method was used to optimize the miscibility of supercritical water (SCW) with asphaltene (AS) at 400–450 °C and 20–35 MPa. The optimal temperature for the determination was 440 °C due to the improved balance between solubility and the coking rate. With increasing the pressure at 440 °C, the degradative extraction yield of AS using SCW reached a maximum at around 30 MPa. The extraction behavior was thought to be controlled mainly by the water properties represented by the dielectric constant (DC) and Hansen solubility parameter (HSP). These properties affected the miscibility with AS and consequently the extraction yield. As a result, the optimal water properties to achieve the highest miscibility with AS were DC = 2.2, δp = 6.4, and δh = 9.7.

Figure optionsDownload as PowerPoint slideHighlights
► Degradative extraction of asphaltene by supercritical water was performed.
► Extraction behavior was thought to be controlled mainly by water properties.
► Dielectric constant and Hansen solubility parameter of water was influential.
► Optimal water properties for the highest miscibility with AS was determined.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 68, August 2012, Pages 113–116
نویسندگان
, , ,