本文選題：褐煤燃燒 + 風量��； 參考：《遼寧工程技術(shù)大學學報(自然科學版)》2017年10期

【摘要】：為研究火區(qū)封閉過程中氣體組分變化,通過分析火區(qū)內(nèi)氣體成分判定火區(qū)燃燒狀態(tài),以安全封閉火區(qū)防止因火災(zāi)引發(fā)瓦斯爆炸事故.利用程序升溫實驗研究了風量分別為40 m L/min、80 m L/min、120 m L/min、160 m L/min和200 m L/min時褐煤燃燒產(chǎn)生的碳氧化物體積分數(shù)及O_2體積分數(shù)變化規(guī)律.研究結(jié)果表明:風量越大,O_2體積分數(shù)變化趨勢越小,消耗氧氣量越小;相同溫度條件下,O_2體積分數(shù)有隨著風量增加呈現(xiàn)增加的規(guī)律性;隨著風量增加,CO、CO_2生成量均減少,且CO、CO_2生成量與溫度之間呈指數(shù)關(guān)系變化;相同溫度下,隨著風量增加,CO、CO_2生成量減少,且燃燒階段CO生成量與風量呈指數(shù)關(guān)系變化,CO_2生成量與風量呈線性關(guān)系變化.隨著風量增加,CO生成初始溫度滯后,相同溫度時CO生成量減少.
[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.
【作者單位】： 遼寧工程技術(shù)大學安全科學與工程學院;礦山熱動力災(zāi)害與防治教育部重點實驗室;湖南科技大學煤礦安全開采技術(shù)湖南省重點實驗室;吉林省安全科學技術(shù)研究院;
【基金】：國家自然科學基金(51274115,51274113) 遼寧省教育廳基金(L2012122) 煤礦安全開采技術(shù)湖南省重點實驗室開放基金(201501)
【分類號】：TD752.2
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本文編號：2043389