期刊
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
卷 80, 期 1, 页码 116-125出版社
CANADIAN SOC CHEMICAL ENGINEERING
DOI: 10.1002/cjce.5450800112
关键词
diffusivity; carbon dioxide; methane; ethane; nitrogen; bitumen; functional; minimization
Experimental data for the diffusivity of carbon dioxide, methane, ethane and nitrogen in Athabasca bitumen are presented in the range 25-90degreesC at 4 and 8 MPa. The diffusivity of these gases has been determined as a function of gas concentration in bitumen using a non-intrusive experimental method. The diffusivity of gas in general is found to increase with temperature and pressure, and is a unimodal function of concentration. A correlation is provided for the average diffusivity of these gases as a function of temperature.
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