煤粉工业锅炉用煤低温氧化特性的实验研究

发布时间：2018-06-08 08:17

本文选题：煤粉工业锅炉 + 煤粉自燃　；参考：《煤炭工程》2016年08期

【摘要】：煤粉的自燃与其低温氧化特性有关,为研究煤粉的低温氧化特性,采用绝热氧化的方法,对三种煤粉工业锅炉常用煤粉进行了实验,获得了煤粉的温升曲线和实验过程中气体产生情况。实验结果表明:三种常用煤粉中,挥发分含量越高,低温氧化活化能越低,煤种发生自燃的倾向性越强;煤粉升温过程中产生的CO、CO2、CH4量随着温度的升高而增加,O2量则随着温度升高而降低,并且煤的挥发分越高,气体产生(消耗)量越多。综合考虑,可将CO浓度作为自燃预警主要指标,将CH4、O2浓度作为辅助指标。
[Abstract]:The spontaneous combustion of pulverized coal is related to its characteristics of low temperature oxidation. In order to study the characteristics of low temperature oxidation of pulverized coal, three kinds of pulverized coal used in industrial boilers are tested by adiabatic oxidation method. The temperature rise curve of pulverized coal and the gas production during the experiment are obtained. The experimental results show that the higher the content of volatile matter, the lower the activation energy of oxidation at low temperature, and the stronger the tendency of spontaneous combustion of coal. The increase of CO _ (2) O _ (2) Ch _ (4) produced in the process of coal heating decreases with the increase of temperature, and the higher the volatile content of coal is, the more gas is produced (consumed). The CO concentration can be regarded as the main index of spontaneous combustion warning and the Ch _ 4O _ 2 concentration as the auxiliary index.
【作者单位】：煤炭科学技术研究院有限公司;煤炭资源高效开采与洁净利用国家重点实验室;国家能源煤炭高效利用与节能减排技术装备重点实验室;
【基金】：煤炭科学技术研究院有限公司基础研究基金(2015JC01)
【分类号】：TD752.2

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