温度对烃类物质爆炸极限的影响及其预测模型研究

Influence of temperature on explosion limits of hydro carbons and its prediction model

为研究温度对烃类气体爆炸极限的影响,利用爆炸极限测试仪对C1-C4烃类气体在20℃、60℃、100℃、140℃等初始温度条件下的爆炸极限进行了测试。结果表明:C1-C4烃类气体的爆炸下限在20-140℃范围内与温度呈线性关系,同一系列烃类物质,随着碳原子数的增加,同一温度下所对应的爆炸下限数值依次降低;对于相同碳原子数的烃类物质,相同温度下烷烃的爆炸下限数值高于烯烃的爆炸下限数值。此外,建立了高温条件下烃类物质爆炸极限的预测模型,为烃类物质爆炸极限的预测提供了一种方法。

To research the influence of temperature on the explosion limits of hydro carbons, the LEL and UEL of C1-C4 hydro carbons at 20℃ ,60℃ ,IO0℃ ,140℃ were measured by the explosion limit tester. The resuhs showed that a linear relationship is presented between explosion limits of C1-C4 hydro carbons and temperatures. For the same series of hydro carbons, with the increase in the number of carbon atoms, the LEL is decrease. For the same number of carbon atoms hydro carbons, the LEL of alkanes is higher than LEL of olefins on the same temperature. In addition, the prediction model of LEL and UEL was established.