Study of the Possibility of Diffusion Combustion of Oil when Supplying Oxygen into a Closed Volume of an Oil Pipeline
V. V. Zamashchikov1, Ya. V. Kozlov1, A. A. Korzhavin1, V. V. Solov’ev1, A. N. Shatalov2, D. D. Shipilov2
1Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Tatar Oil Research and Design Institute (TatNIPIneft) of PJSC TATNEFT, Almetyevsk, Russia
Keywords: diffusion combustion of liquids, combustion in a closed vessel, vapor-oxygen combustible mixture
Abstract
The lower temperature limits for flame propagation of mixtures of oil vapor with oxygen and nitrogen in the presence of liquid oil were determined. Experiments showed that the lower temperature limit differs significantly from that expected for oxygen. One reason for this discrepancy is that, in the presence of an ignition source and a large amount of oxygen in the gas phase, diffusion combustion of the liquid oil film present on the inner surfaces of the vessel can initiate. The flame propagates along this film to the bulk of the oil. As the oil continues to diffuse, a pressure increase significantly exceeds that expected for flame propagation through the gas phase.
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