混合饲料粉尘燃爆特性研究
Research on combustion and explosion characteristics of mixed feed dust
孙璐 1许开立 1李季硕 1周浩东 1郝腾腾 1温晶雯 1陈国卫1
作者信息
- 1. 东北大学 资源与土木工程学院,辽宁 沈阳 110819
- 折叠
摘要
为探究不同比例混合饲料粉尘燃爆特性,首先将玉米粉、玉米秸秆粉按照不同比例混合,得到3 种样品.然后,利用20L球形爆炸测试系统和哈特曼管,对混合样品最小点火能(MIE)、粉尘云爆炸下限浓度(MEC)、最大爆炸压力(Pex)和爆炸指数(Kst)等参数进行测试.最后,利用同步热分析仪分析比较不同比例混合饲料的热解特性.研究结果表明:玉米粉、玉米秸秆粉混合样品中,当二者混合比例为3∶2(玉米粉∶玉米秸秆粉)时,失重速率更大,同时在热解过程中会释放更多热量;二者混合比例为1∶1 时,MIE,MEC值较高,Pex值较大,危险性和破坏性较大.研究结果可为混合饲料加工防爆提供参考.
Abstract
In order to explore the combustion and explosion characteristics of mixed feed dust with different proportions,a 20 L spherical explosion test system and a Hartmann tube were used to test the minimum ignition energy(MIE),minimum explo-sive concentration of dust cloud(MEC),maximum explosive pressure(Pex)and explosion index(Kst)of corn powder,corn straw powder and three samples mixed with different proportions.The pyrolysis characteristics of mixed feed with different pro-portions were analyzed and compared by the synchronous thermal analyzer.The results show that when the mixing proportion is 3∶2,the weight loss rate is higher,and more heat is released during the pyrolysis process.When the mixing proportion is 1∶1,the MIE and MEC values are higher,the Pex value is the largest,and the hazard and destructive power are greater.The research results can provide reference for the explosion-proof of mixed feed processing.
关键词
饲料/粉尘爆炸/热解Key words
feed/dust explosion/pyrolysis引用本文复制引用
出版年
2024
NETL
NSTL
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