Influence of Phase Change Process of Phase Change Thermal Storage Material on Desorption Characteristics of Gas-containing Coal
The slow desorption rate of coal body gas causes coal and gas outburst accidents.Temperature influences the gas desorption process:the temperature increase significantly im-proves the gas desorption rate.Based on the law,selecting an inorganic phase change energy storage material with a phase change temperature of 58 ℃,we conducted comparative experi-ments to study the temperature influence on the coal body caused by the phase change process of the phase change material with different contents.At the same time,the phase change material was applied to adsorption and desorption experiments to obtain the effect of temperature changes on the desorption capacity and desorption rate of coal gas in the phase change process.The re-sults showed that after adding the phase change material,the gas-containing coal that had com-pleted the desorption process would desorb gas again.The final stable desorption capacity was 1.709 cm3/g,which was increased by 0.185 cm3/g and accounted for 12.14％of the desorption capacity under normal conditions,indicating that the adding phase change material could improve the desorption rate of the coal samples.
gas adsorption and desorptionphase change materialadsorption capacitytem-perature change
万方数据
维普
