论文部分内容阅读
提出了火灾四象限法则。建立了多指标参数煤低温氧化进程分析体系,确定了煤自然发火的临界值:CO浓度高且持续增加,表明煤正在氧化,煤温小于90℃;C_2H_6/CH_4、CO/CH_4的安全临界值分别0.06和0.6,超过临界值说明煤氧化加剧;C_2H_4、C_2H_2为辅助指标,2种气体初现对应煤温80℃~90℃、190℃。利用该指标体系判定煤氧化,指导现场火灾防治。
Proposed fire four-quadrant law. The analysis system of multi-parameter coal low temperature oxidation process was established, and the critical value of spontaneous combustion of coal was determined: the CO concentration was high and continued to increase, indicating that the coal was being oxidized and the coal temperature was less than 90 ℃; the safety critical value of C_2H_6 / CH_4 and CO / CH_4 Respectively, 0.06 and 0.6 respectively. When the critical value is exceeded, the coal oxidation is aggravated. C_2H_4 and C_2H_2 are the auxiliary indicators, and the two kinds of gases correspond to the coal temperature of 80 ° C to 90 ° C and 190 ° C. Use this indicator system to determine coal oxidation and guide on-site fire prevention and control.