UDC 614.8
This work is devoted to the problem of ensuring fire safety at facilities for storing, transporting and consuming liquefied natural gas (LNG). Since the main characteristic of natural gas as a fuel is its energy value, the assessment of fire and explosion hazard properties must be carried out taking into account the energy indicator. Excessive explosion pressure and concentration limits of flame propagation are considered as fire hazardous properties, and the Wobbe number is considered as energy properties. These characteristics depend on the composition of LNG, which can vary within the main combustible components: methane, ethane, propane, butane. In this regard, it is of practical interest to obtain dependencies that allow one to find the most optimal properties depending on the composition. To solve the problem, the experiment optimization method was a simplex-lattice Scheffé design of the third order with a central point. For its use, the composition was simplified, which is justified by the percentage content of the main combustible components and their contribution to the studied indicators. As a result, a system of equations was obtained that allows one to predict the properties of LNG depending on the composition. An example calculation is shown
liquefied natural gas, fire hazard properties, explosion pressure, wobbe number
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