煤矿安全2017，Vol.48Issue(7)：32-35,4.DOI:10.13347/j.cnki.mkaq.2017.07.009
水浸煤二次氧化特性研究
Study on Secondary Oxidation Characteristics of Soaked Coal
摘要
Abstract
In order to study the secondary oxidation characteristics of soaked coal,6 kinds of coal samples were used for temperature rising programmed test and specific surface area,pore size and analyzed,the experimental results show that the formation rate and exothermic intensity of secondary oxidation gases of the pre-oxidized soaked coal are higher than that of the pre-oxidized raw coal,and the gas production rate and the heat liberation intensity increase with the increase of the pre-oxidation temperature;the activation energy of soaked coal after pre-oxidation is lower than that of the pre-oxidized raw coal and the un-oxidized coal.With the increase of the pre-oxidation temperature,the activation energy is also reduced,which leads to the increase of spontaneous combustion tendency;the specific surface area of raw coal and soaked coal is decreased with the increase of the pre-oxidation temperature,and the secondary oxidation has little effect on the most probable pore size of the raw coal and soaked coal used in the experiment,which are both about 4 nm.However,the differential pore volume / average pore size of the coal gradually decreases with the increases of pre-oxidation temperature at the same most probable pore size.关键词
耗氧速率/放热强度/活化能/比表面积/最可几孔径Key words
oxygen consumption rate/heat liberation intensity/activation energy/specific surface area/most probable pore size分类
矿业与冶金引用本文复制引用
宋申,邬剑明,王俊峰,王涌宇,郭亚军..水浸煤二次氧化特性研究[J].煤矿安全,2017,48(7):32-35,4.基金项目
国家国际科技合作资助项目(2011DFA72310) （2011DFA72310）
国家自然科学基金资助项目(51274146) （51274146）
