Investigation of the thermal effect of the cleaning fluid jet on the oil sediment in the tank
DOI:
https://doi.org/10.15587/1729-4061.2014.33811Keywords:
heat transfer process, oil residue, tank with oil products, fire and explosion hazard, environmental hazards, man-made risksAbstract
When unloading the tank, a part of oil products stays on the inner surfaces, structures, in the form of solid (stuck) layer. In addition, some of them remain in the pipes, valves and pumps of cargo and stripping systems. Impurities, paraffin, asphalt-resinous inclusions, exfoliated corrosion products settle at the tank bottom. As a result, an unpumped residue is formed, the amount of which varies widely and depends on several factors such as physicochemical properties of oil products, transportation temperature, technical condition of the cargo system, etc. The residue is a mixture of oil products, and when cleaning tanks, there is a fire-dangerous situation that may result in fire, explosion or environmental pollution of territories.
The problem of identifying the impact of factors on man-made risks of environmental pollution by harmful substances that are formed as a result of use and repair of tanks with oil products is a scientific basis for improving environmental safety and reliable security of human life near such objects.
It was found that the temperature difference of the oil residue layer and cleaning fluid does not exceed 1.50C, even with the increased by several orders of magnitude layer thickness.
The temperature difference will be even less for the above values of oil residue layer thicknesses, determined from experimental data.
The results allow to model and calculate the evaporation rate of oil residues and forecast the size of pollution zone and man-made risks, associated with these processes.
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