煤炭工程 ›› 2014, Vol. 46 ›› Issue (7): 107-110.doi: 10.11799/ce201407035

• 研究探讨 • 上一篇    下一篇

黄骅港三期筒仓储煤自燃预警方法研究及应用

张江石,王建豪   

  1. 中国矿业大学(北京) 资源与安全工程学院
  • 收稿日期:2013-08-19 修回日期:2013-10-21 出版日期:2014-07-10 发布日期:2014-08-01
  • 通讯作者: 张江石 E-mail:zjsh0426@163.com

Study and application on coal spontaneous combustion prediction method of Huanghua Port 3rd phase silo coal storage

  • Received:2013-08-19 Revised:2013-10-21 Online:2014-07-10 Published:2014-08-01

摘要:

基于对黄骅港三期筒仓储煤过程中煤体自燃的预警,选取筒仓所储神优-2和外购-1煤样进行程序升温实验,分析了煤体氧化热解产生的各指标气体及随温度的变化规律。实验发现:CO、C2H4、C2H6三种单一指标以及C2H4/C2H6、ΔCO/ΔO2两种复合指标随煤温的变化表现出了良好的规律性,并通过CO在60℃左右时浓度的突增,将煤体倒仓临界温度定为60℃。结合筒仓现有安全装置,采用温度监测和指标气体分析作为筒仓储煤自燃的预警方法。对筒仓内煤体入仓、出仓之前的煤温以及储煤过程中的煤温、生成的指标气体含量进行实时监控,并设定了合理的报警阈值。

关键词: 筒仓储煤, 煤自燃, 温度, 指标气体, 预警方法

Abstract:

Based on the early warning of spontaneous combustion coal in the process of Huanghua Port 3rd phase silo coal storage, Shenyou-2 and Waigou-1 were selected to carry on the experiment of programmed heating, obtaining the various indicators of oxidative pyrolysis gases and analyzing their variation with temperature. Results showed that CO、C2H4、C2H6 and C2H4/C2H6、ΔCO/ΔO2 changed with the coal temperature and showed good regularity. Through the mutation of CO in 60℃, the silo emptying critical temperature of two kinds of coal was set at 60℃. At the same time, combined with safety device of the existing analysis of silo, we analyzed the temperature monitoring and early warning index gases as a warning method of silo coal storage spontaneous combustion. Carrying on the real-time monitoring to the temperature of coal transport in and out, the content of index gases and coal temperature in the process of coal storage, as well as setting the appropriate alarm threshold may have certain guiding significance for the safety in production.

Key words: Silo coal storage, coal spontaneous combustion, temperature, indicator gas, early warning method