STUDYING OF INFLUENCE OF TEMPERATURE ON CONCENTRATION LIMITS OF THE INFLAMMABILITY OF FUEL MIX WITH OXYGEN

Abstract

The second half of the twentieth century became time of active development of fire and industrial safety. First of all it is connected with growth of industrial production, increase of its concentration, complication of technologies, use of the wide nomenclature of new types of the substances participating in technological processes, etc. All this led to that occurring technogenic accidents began to have more and more catastrophic character, making adverse effect on human health and surrounding environment. To accidents at the enterprises of oil and gas branch large volumes of emission of the fire and explosion hazardous substances, forming clouds the fuel mix with oxygen of mixes, oil spills and as a result - fires, explosions, destruction of devices and the whole installations are characteristic. In article problems of determination of critical concentration of combustible substance in a cloud of fuel mix with oxygen at which emergence of a explosion situation, in dependence on temperature of surrounding space and fire-dangerous properties of combustible substance is possible are considered. The article presents the results of laboratory studies on the procedure adopted EMERCOM Russia the influence of temperature on the surrounding space explosion limit fuel-air mixtures. As test compounds were used as a gas-air mixture (a mixture of hydrogen sulphide with oxygen and propane-butane), and the highly explosive vapor-air mixture (a mixture of gasoline vapor and air oxygen). Dependences between temperature and concentration limits of an inflammability the fuel mixes with oxygen were removed. The obtained values ​​are derived dependencies subjected compared with values ​​previously obtained experimentally. Results of the comparison showed that the error for all the obtained values ​​did not exceed 5 per cent.