Ignition of a coal particle at the low temperature of gas flow

Dmitrii O Glushkov,О В Шарыпов

doi:10.1051/epjconf/20158201045

Abstract

Regularities of physical and chemical processes occurring during the heating of the coal dust particles by low-temperature air flow are investigated by means of thermogravimetric analyzer TA SDT Q600 and experimental setup of optical diagnostics of multiphase flows based on PIV method. Qualitative and quantitative characteristics were established for the processes of the coal particle inert heating, moisture evaporation, thermal decomposition, combustible gas mixture formation, oxidation of volatiles and carbon. It was revealed that the temperature of the oxidizer required for the coal particle ignition is higher than 500 ◦ C. The experimental data can be used to develop predictive mathematical models of technological processes fire hazard in pulverized coal systems of thermal power plants.

Highlights

According to the latest trends in the global energy industry, there are several areas to increase production capacity. These directions are primarily characterized by types of energy sources: fission and fusion energy sources, alternative energy sources, traditional energy sources
Most of the alternative energy sources are not capable of energy generating on an industrial scale
Other experimental investigation with using the setup (Fig. 2) for optical diagnostics of multiphase flows based on the PIV method [1, 2] was carried out for the analysis of the ignition delay time values in a real technological process conditions and a more detailed study of heat and mass transfer in the vicinity of the coal particles

Summary

Introduction

According to the latest trends in the global energy industry, there are several areas to increase production capacity. These directions are primarily characterized by types of energy sources: fission and fusion energy sources, alternative energy sources (water, wind, solar, geo-energy), traditional energy sources (solid, liquid and gaseous fossil fuels). The share of nuclear and alternative energy sources in the total world energy is too low and does not exceed 15%. EPJ Web of Conferences both on an individual station, and across the grid. The purpose of the present work is an experimental study of physical and chemical processes during heating the coal dust particles by low-temperature air stream

Characteristics of the experimental sample

Experimental studies and results

Findings

Conclusions