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PRELIMINARY PHASE DIAGRAMS FOR BITUMEN/ HEAVY OILS AND RELATED MIXTURES

 

作者: CliveR. Cartlidge,   Leisl Dukhedin-Lalla,   Parviz Rahimi,   JohnM. Shaw,  

 

期刊: Fuel Science and Technology International  (Taylor Available online 1996)
卷期: Volume 14, issue 1-2  

页码: 163-178

 

ISSN:0884-3759

 

年代: 1996

 

DOI:10.1080/08843759608947567

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The phase behaviour of heavy oil mixtures was studied using an X-ray imaging system. Batch phase experiments were performed at temperatures and pressures up to 725 K and 7 MPa. Complex phase behaviour such as liquid-liquid-vapour and solid-liquid-liquid-vapour were observed and preliminary experimental phase diagrams were constructed. This observed complex phase behaviour is consistent with thermodynamic theory and such phase behaviour can be modelled using the Peng-Robinson equation of state and the tangent plane criterion. These latter points are illustrated through the phase diagram for a model reservoir fluid (ethane + propane + n-butane + phenanthrene) which exhibits solid-liquid-liquid-vapour phase behaviour. Example predicted and experimental phase diagrams are presented for this model system.

 

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