Authors: D.N.,Utkaev Zastrelov, M.P. Makeev, A.N. Kormin, A.I. Smyslov

Title of the article: Development and study of the network model of the mine methane utilization process in a modular boiler

Year: 2017, Issue: 5, Pages: 50-55

Branch of knowledge: Earth sciences

Index UDK: 662.861.481

DOI: 10.26730/1999-4125-2017-5-50-55

Abstract: This paper reviews the technological scheme of coal mine methane utilization in a modular boiler for heat generation and the basic components and stages of methane-air mixture transportation and processing. In accordance with the applicable regulations, the methane concentration in the methane-air mixture supplied to the boiler for utilization must be at least 25%. The article presents the model of the process of methane re-cycling on the basis of the directed graph, providing the technological interpretation of the positions and transitions of the network model, as well as the values of initial marking and multiplicities of the arcs of Petri nets. The structural properties of the network model were analysed with respect to boundedness, consistency, repeatability, and conservatism. Interpretation of the structural properties of the network model was presented. The results of the simulation of the mine methane utilization detected shortcomings in the work of some of the components of the block-modular boiler-house. The recommendations were developed for stabilization of the gas utilization unit by means of calibration of gas pressure regulator. This measure made it possible to stabilize the pressure in the pipeline at the entrance to the boiler-house and to increase the efficiency of the system as a whole. The data of methane flow rate in a modular boiler before and after calibration of the gas pressure regulator for equal periods of time have been shown. The work of boiler after calibration of the gas pressure regulator is characterized by a stable consumption of methane-air mixture. It is expected that extended implementation of the technologies of coal mine methane utilization will increase the energy efficiency of coal mines due to the rational use of energy resources as well as reduce greenhouse gases emission.

Key words: coal mine methane utilization thermal and electric power oriented graph

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