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煤层气蓄热氧化热能调控模拟研究

Simulation study on thermal energy regulation of coal bed methane thermal storage and oxidation

  • 摘要: 为了提高煤层气蓄热氧化热能利用效率、实现热能最佳调配,对不同环境温度及不同时段的热能调配进行模拟研究,并在阳煤一矿杨坡堰低浓度煤层气蓄热氧化利用项目中验证调控效果。模拟研究表明:煤层气蓄热氧化利用系统中,夏季制冷机组热能利用量随温度升高而增大,冬季井筒加热及建筑供暖热能利用量随温度升高而减小,煤矿洗浴热能利用量在交班时呈现突变,通过调节各个热能利用装置的高温烟气进气量能实现各热能利用点的最佳匹配。在实际煤层气蓄热氧化利用项目运行过程中,以模拟研究结果指导的热能调控结果显示,当环境温度变化时,热输出端热媒介质温度保持稳定,有效地减少了能源浪费。

     

    Abstract: In order to improve the utilization efficiency of coal bed methane thermal storage and oxidation heat energy and achieve the best deployment of heat energy, a simulation study was carried out on the heat dispatch under different temperatures and different time periods. The control effect was verified in Yangpoyan low concentration coal bed methane thermal storage and oxidation utilization project in No.1 Coal Mine of Yangquan Coal Mine. The simulation results show that:in the coal bed methane thermal storage and oxidation utilization system, the thermal energy utilization of refrigeration units increases with the increase of temperature in summer, while in winter, the energy efficiency of shaft heating and building heating decreases with the increase of temperature.The utilization of coal mine bath heat energy presents a sudden change during the shift change period. The optimal matching of heat energy utilization points can be achieved by adjusting the high temperature flue gas intake volume of each thermal energy utilization equipment. During the actual operation of the coal bed methane thermal storage oxidation utilization project, the thermal control results guided by the simulation research show that when the ambient temperature changes, the temperature of the thermal medium at the thermal output side keeps stable, which effectively reduces the energy waste.

     

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