常见工业可燃气体(液体)最大允许氧含量的特性研究.pdf

第 32 卷第 5 期 煤炭学报 Vol. 32 No.5 2ω7 年 5 月 JOURNAL OF CHINA COAL SOCIETY May 2ω7 文章编号 :0253 - 9993 (2∞7)05 …臼 13 … 04 常见工业可燃气体(液体)最大 允许氧含量的特性研究 张增亮 1 气学革梅 1 ， 2 (1.湖南科技大学能源与安全工程学院，湖南湘潭 411201; 2. 湖南科技大学信息与电气工程学院，湖南湘潭 41120 1) 摘 要:以煤气等为例对可燃气体和液体的最大允许轧含最进行了大量实验研究，问时通过适用 与爆炸极限对比分析的方法对最大允许轧含量的变化规律和影响因素进行了理论分析，得出如下 结论:最大允许氧含堂具有最大值和最小值，而且两者之间每一可燃物浓度都对应唯一的最大允 许氧含量值;可通过减少反应中氧浓度、降压、降温、加入惰性气体等办法，以缩小爆炸极限范 圃，增大最大允许氧含量，从而将其控制在爆炸范围之外. 关键词:可燃气体;最大允许氧含量;爆炸极限;影响因素 中固分类号: 0643.2 文献标识码 :A Study on characteristics of the maximum allowable oxygen content of common industrial flammable gases (liquids) 1 2 1 2 ZHANG Zeng.liang ? , LI Ge.mei ? ( 1. School of Energy αnd Safety Engineering , Hunan University of Science and Technology , Xia咱肌 411201 ， China; 2. Sc.仇。lof[l呐rmation Science αnd Ekctrical Engineering , Hunan Uni仰rsity of Science αnd Technology , Xiangtan 411201 , China) Abstract: Taking the coal gas as example , conducted the massive experimental study on MAOC (maximum allow? able oxygen content) of flammable gases and liquids. At the same time , through the method of contrasting wi出 the explosion limit , carrled on theoretical analysis and exploration of MAOC varying laws and affecting factors. The re? sults show that MAOC has both the maximum value and the minimum value , moreover between them , concentration for each combustible substance correspOnds tO the sole value Of MAOC. By the ways of reducing Oxygen concentra? tion in reaction , decreasing pressure and temperature , adding inert gas and SO on to na町Ow the scOpe of the explo? sion limit , increas