Diffusion coefficients of propane and butane in peace river bitumen

被引：101

作者：

Das, SK

Butler, RM

机构：

[1] Department of Chemical Engineering, University of Calgary, Calgary, Alta., T2N 1N4, 2500 University Drive, N.W.

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1996年 / 74卷 / 06期

关键词：

vapour extraction; Vapex; heavy oil and bitumen; diffusivity-viscosity correlation;

D O I：

10.1002/cjce.5450740623

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Diffusion plays a vital role in the ''Vapex'' process. In the present work the results of experiments on ''Vapex'' using a Hele-Shaw cell have been used to obtain empirical correlations for the diffusivities of propane and butane in Peace River bitumen. Additional data required for the estimation of diffusivities from these experiments are the solubilities of solvent in bitumen and a correlation for the viscosity of solvent bitumen mixture. Diffusivities are assumed to decline exponentially with viscosity. Computed values of diffusion coefficients fall within the range of the published data for similar systems. This simple experiment can be used to estimate the diffusivities of gaseous solvents in highly viscous fluids.

引用

页码：985 / 992

页数：8

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