Testování a simulace vlivu přídavku vodíku na výbušné vlastnosti směsi fosilních paliv a vzduchu

Abstract

The diploma thesis is focused on testing and simulation of explosion characteristics of fossil fuels mixture - coke oven gas - with the addition of hydrogen in the air. This gas occurs in the Moravian-Silesian Region as a mixture formed by the coking of black coal and is used as a fuel for the combustion process. It contains up to 60 % hydrogen, 25 % methane and 10 % carbon monoxide together with other flammable components with a concentration less than 5 %. The danger of the first two named components is explosivity. Carbon monoxide is explosive and toxic. Testing of pure hydrogen and coke oven gas was performed in two explosion chambers with a volume of 0.020 m3 and 1 m3. The simulation of the effect of hydrogen addition was performed by calculating the maximum explosion pressure for added concentrations lower than the lower explosion limit. Furthermore, a visualization of the coke oven gas leak from the pipeline was performed. Coke oven gas is interesting from practical point of view because it is considered as a source of hydrogen in the future. At the same time, there have been many leaks in our region in the past, the most famous of which occurred in 1976, when its explosion destroyed the Ostrava Pioneers Bridge. The diploma thesis aims to present the results of the hydrogen addition to the coke oven gas mixture and thus simulate fluctuations in its concentration, which can actually accompany its production.