TESTING OF THE PHOTOTHERMAL IGNITION DESIGN MODEL BASED ON EXPERIMENTAL DATA
PURPOSE. The research approach to fire and explosion hazard of photochemical processes by means of mathematical modeling is considered. The testing of the model on the example of chlorination of chlormethane under the influence of ultraviolet light has been done. METHODS. The researches were carried out in two steel cylindrical vessels (a short vessel - with a length of 0,04 m, with a diameter of 0,036 m, a long vessel - with a length of 0,89 m, with a diameter of 0,05 m) with the help of the designed model of the photothermal ignition using MATLAB software. The calculation data were compared with the experimental data. FINDINGS. The model of the photothermal ignition in the short vessel describes adequately the behavior of the hydrocarbon + chlorine gas system under the influence of ultraviolet light, the calculation data are correlated with the experimental data. To study photochemical processes in the long vessel with the help of the calculation model, it is necessary to take into account equations describing a gas flow. RESEARCH APPLICATION FIELD. The calculated results can be used for forecasting photothermal ignition critical parameters and ensuring fire and explosion safety of photochemical processes. CONCLUSIONS. The photothermal ignition model works qualitatively correctly for the short vessel, and the calculation data are in satisfactory agreement with the experimental data. A further improvement of the photothermal ignition model will allow to study combustion of hydrocarbon-chlorine gas systems and forecast critical parameters that are necessary to ensure fire safety of photochemical processes.