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Information × Registration Number 0213U006417, 0112U005152 , R & D reports Title Investigation of methane phase states in the samples of coals by laser-stimulated desorption of methane. popup.stage_title Head Brodyn M.S., Registration Date 31-05-2013 Organization Institute of physics NASU popup.description2 The report contains the results:1) experimental tests of two designs highly sensitive system for measuring laser desorption of methane from the samples (fossil) coal-scan for a long time; 2) measurement of methane desorption with typical real fossil specimens Donetsk coal for 15 hours; 3) Search approximations obtained curves of methane desorption and installation of analytical type function that describes the process of spontaneous, equilibrium, unstimulated methane desorption (removal). The results are grouped in the report as follows. The first chapter describes in detail the design created two-channel systems with one common photodetector and two independent photodetectors. A brief comparative analysis of both types of systems, some features of technology making them key elements, advantages and disadvantages in terms of measuring small concentrations of methane desorption from samples of fossil coal with emphasis on measurements for a long time - tens of hours. The second section describes in detail the technique of measuring methane desorption (removal) of the typical real fossil specimens Donetsk coal for 15 hours. The third section presents the experimental results obtained by the processes of desorption of methane from real samples of fossil coal in the Donetsk Basin, conducted approximation power dependence of desorption of methane (metanovynosu) from time to time and proposed an analytical type of function that describes this process. The fourth section formulates specifications for given experimental cell, upgrades and legacy designs created a system to improve the methods of measurement and preparation / sampling, in the aggregate, and ultimately provide a substantial deepening understanding of methane desorption and its phase states. This knowledge will help improve safety in the coal industry. Product Description popup.authors Бащенко Сергій Миколайович Ляховецький Володимир Іванович Марченко Людмила Станіславовна Негрійко Анатолій Михайлович Удовицька Олена Григорівна popup.nrat_date 2020-04-02 Close