Volatilization and Ignition of Oil Sand Samples During Intermittent Exposure to Hot Low-Velocity Air Streams

[+] Author and Article Information
G. A. Karim, A. Hanafi, S. A. Mehta

University of Calgary, Calgary, Alberta, Canada

J. Energy Resour. Technol 111(2), 104-109 (Jun 01, 1989) (6 pages) doi:10.1115/1.3231404 History: Received November 01, 1988; Revised May 01, 1989; Online October 22, 2009


The behavior of small oil sand samples was monitored experimentally when subjected repeatedly to low-velocity heated air streams, with either prompt quenching or slow cooling of the samples to their initial temperatures between these exposures. The stream temperature was either in the range of 300°C to 500°C in air or at higher temperatures of up to 760°C, while being exposed to the products of combustion of very lean hydrogen-air mixtures. This was done in relation to understanding better the associated processes in some in-situ recovery trials where stoppage of the combustion front and/or the flow of the injected fluids can occur. A variety of multi-exposure-cooling schemes was considered and their effects on the extent of volatilization and ignition established. Comparison to the corresponding behavior of similar samples under uninterrupted exposure to the heated streams was made throughout.

Copyright © 1989 by ASME
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