煤矿安全2017，Vol.48Issue(10)：35-38,4.DOI:10.13347/j.cnki.mkaq.2017.10.010
长期水浸焦煤风干氧化自燃特性研究
Study on Oxidation and Spontaneous Combustion Properties of Coking Coal After Long-term Water Immersion
摘要
Abstract
Residual coal in goaf immersed in water in a long time is easier to exhibit spontaneous combustion once the water is removed.In order to study oxidation and spontaneous combustion properties of coking coal after long-term water immersion,taking the 4# coal in Xiqu Coal Mine as the research object.After long-term water immersion from 30 d to 90 d,coal specimens were dried under the condition of 25 ℃C in vacuum drying oven after 72 h,the oxidation and spontaneous combustion properties were compared by programming temperature,infrared spectroscopy,specific surface area and pore analysis test.The results show that the coal is easier to self-ignite after long-term immersion and dried.It produced more products such as CO and CO2 during programming temperature.Besides,it produces more pores and fractures,hole diameter,specific surface area and pore volume increases with increasing water immersion time,but the extent of increase gradually decreased.In addition,the-OH,-CH2,-CH3,C=O functional groups in coal increase.Long-term water immersion on the coking coal spontaneous combustion has a certain role in promoting.关键词
水浸焦煤/程序升温/孔隙结构/红外光谱/自燃特性Key words
water immersion coking coal/programming temperature/pore structure/infrared spectroscopy/spontaneous combustion properties分类
矿业与冶金引用本文复制引用
李云飞,唐一博,王俊峰,王涌宇..长期水浸焦煤风干氧化自燃特性研究[J].煤矿安全,2017,48(10):35-38,4.基金项目
国家自然科学基金资助项目(51604185) （51604185）
山西省回国留学人员科研计划资助项目(2015-37) （2015-37）
国家国际科技合作资助项目(2011DFA72310) （2011DFA72310）
