不同风量下褐煤燃烧碳氧化物生成规律

发布时间：2018-06-20 06:56

  本文选题：褐煤燃烧 + 风量　； 参考：《辽宁工程技术大学学报(自然科学版)》2017年10期

【摘要】：为研究火区封闭过程中气体组分变化,通过分析火区内气体成分判定火区燃烧状态,以安全封闭火区防止因火灾引发瓦斯爆炸事故.利用程序升温实验研究了风量分别为40 m L/min、80 m L/min、120 m L/min、160 m L/min和200 m L/min时褐煤燃烧产生的碳氧化物体积分数及O_2体积分数变化规律.研究结果表明:风量越大,O_2体积分数变化趋势越小,消耗氧气量越小;相同温度条件下,O_2体积分数有随着风量增加呈现增加的规律性;随着风量增加,CO、CO_2生成量均减少,且CO、CO_2生成量与温度之间呈指数关系变化;相同温度下,随着风量增加,CO、CO_2生成量减少,且燃烧阶段CO生成量与风量呈指数关系变化,CO_2生成量与风量呈线性关系变化.随着风量增加,CO生成初始温度滞后,相同温度时CO生成量减少.
[Abstract]:In order to study the change of gas composition in the process of fire closure, the combustion state of fire zone is determined by analyzing the gas composition in fire zone, so as to prevent the gas explosion accident caused by fire. The variation of volume fraction of carbon oxide and volume fraction of O _ 2 in lignite combustion was studied by temperature programmed test when the air volume was 40 mL / min ~ 80 mL / min and 120 mL / min ~ 160 mL / min and 200 mL 路min ~ (-1 / min), respectively. The results show that the larger the volume fraction, the smaller the trend of volume fraction change and the smaller the oxygen consumption. At the same temperature, the volume fraction of O _ 2 increases with the increase of air volume, and the production of COO _ (2) decreases with the increase of air volume. At the same temperature, the output of COG _ 2 decreased with the increase of air volume, and the CO _ 2 production changed exponentially with the volume of air at the same temperature. The change of CO _ (2) production was linear with the air volume at the same temperature, and there was an exponential relationship between CO _ (2) production and air volume at the same temperature. With the increase of air flow, the initial temperature of CO formation lags, and the CO production decreases at the same temperature.
【作者单位】： 辽宁工程技术大学安全科学与工程学院;矿山热动力灾害与防治教育部重点实验室;湖南科技大学煤矿安全开采技术湖南省重点实验室;吉林省安全科学技术研究院;
【基金】：国家自然科学基金(51274115,51274113) 辽宁省教育厅基金(L2012122) 煤矿安全开采技术湖南省重点实验室开放基金(201501)
【分类号】：TD752.2
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