Study Of The Hydrogen Generated In The Coal Oxidative Pyrolysis Process

Fires caused by spontaneous combustion of coal is one of the major disasters in the major coal mine, spontaneous combustion of coal within the mine has been an important factor restricting the development of China’s coal industry, but also pose a threat to the lives of the staff.In order to be able to timely and effective guidance to mine fire-fighting,then the most critical is the early prediction and forecasting of spontaneous combustion of underground coal.For a long time in various coal-producing countries through on-site as well as experimental studies have come to the sign gas to predict the spontaneous combustion of coal.In recent years some scholars in the United States,Australia and other countries have proposed the hudrogen can be used as indicators gas forecast coal seam spontaneous combustion.Especially in the investigation or repair work in the fire district that has gone out of or to be unsealed is particularly important when the emergence of hydrogen could signal a resurgence.In order to study the different coals hydrogen generation law and temperature,this article through the different coal oxidation temperature experiments in order to track the different coals hydrogen formation law and its variation with temperature trends.Select the anthracite of the Jincheng yaoping coal,long flame coal of chang chun xing coal and fat coal of the heng xing coal these three different metamorphic grade coal for oxidation temperature experimental study, to arrive at three diffrernt kinds of coal of hydrogen varies with temperature trends and laws.Through to the Grey Relational Analysis to come to the relevance of different coal hydrogen generation law.Site monitoring of the temperature of gas after extinguishing the coal mines in the fire area closure,studied the relationship between the hydrogen and carbon monoxide of the yiyuan coal well fire.And the two combined to analyze the zone dynamic by the difference and the ratio of the fitting curve for two gases and provides a basis for the Live Fire.Three coal experiments in the case of change of oxidation temperature experimental conditions(coal particle size,heating rate,air flow), Through the comparision of experimental results obtained conditions change does not change the hydrogen generated rules and trends.Hydrogen production will change in the conditions change under the same temperature conditions.