Fulltext

EXCESS VOLUMES OF HEAVY OIL-STOCKS MIXTURES + (KEROSENE OR XYLENE) AT 303 K

Haidar M. Al-Qamaje

Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط
ISSN: 19974884/E26180707 Year: 2010 Volume: 11 Issue: 4 Pages: 47-57
Publisher: Baghdad University جامعة بغداد

Abstract

Binary mixtures of three, heavy oil-stocks had been subjected to density measurements. The data had been acquired on the volumetric behavior of these systems. The heavy oil-stocks used were of good varity, namely 40 stock, 60 stock, and 150 stock. 40 stock is the lightest one with ˚API gravity 33.7 while 60 stock is middle type and 150 stock is heavy one, with ˚API gravity 27.7 and 23.8 respectively. Stocks with Kerosene or Xylene form non-ideal mixtures, for which excess volume can be positive or negative. Mixtures of heavy oil-stocks with paraffinic spike (kerosene) show negative excess volume. While, aromatic rings results a lower positive excess volume, as shown in xylene when blending with 40 stock and 60 stock but a negative excess volume when blending with 150 stock. The gravity of oil-stocks has an effect on excess volume when the oil-stocks spiked with Kerosene or Xylene. Those, 40 stock as typical light type resulted in minimum negative excess volume of -2.18, when it was spiked with the kerosene, while the spiked heavy oil-stock with kerosene gave a maximum excess volume of -11.2. The Redlich-Kister equation was used to fit the excess volume values, and the coefficients and estimate of the standard error values were presented.

Keywords

Excess volume --- Mixing behavior --- T.D. of mixing.