摘要
选用浓度为0.01、0.1、0.3 mol/L的NaOH溶液对无烟煤进行预处理,通过检测不同浓度NaOH预处理所得残煤、滤液及其混合物的生物甲烷产量,研究NaOH预处理对无烟煤生物甲烷转化的影响。结果显示,高浓度NaOH预处理可以显著提高固体煤的产气量;不同浓度处理后的滤液也有生物甲烷的产生,说明NaOH作用于煤结构,使小分子有机物溶出;煤与滤液产气之和显著大于混合条件下产气量,在工程实际运用中,可考虑先抽出煤层预处理后产生的液体,然后注入微生物以提高产气量。
In this paper, anthracite was pretreated with NaOH solutions with concentrations of 0.01, 0.1, 0.3 mol/L. And the effect of NaOH pretreatment on the conversion of anthracite to biomethane was studied through testing the biomethane production of residual coal, filtrate and mixture obtained by pretreatment of different concentrations of NaOH. The results show that the high concentration of NaOH pretreatment can significantly increase the gas production of solid residual coal;methane was detected after anaerobic degradation of the filtrate, indicating that NaOH acts on the coal structure to dissolve small molecules of organic matter;the sum of gas production of coal and filtrate is significant more than the gas production under mixed conditions, therefore, in practical engineering application, the liquid produced after coal seam pretreatment can be extracted first and then injected with microorganism to improve gas production.
作者
李兴凤
郭红光
张亦雯
韩作颖
刘健
LI Xingfeng;GUO Hongguang;ZHANG Yiwen;HAN Zuoying;LIU Jian(College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Lab of In-situ Property-improving Mining of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024.China;Innovation Center of Shanxi Mine Safety for Graduate Education,Taiyuan University of Technology,Taiyuan 030024,China;Slate Key Laboratory of Joint Exploitation of Coal and Coal-bed Methane,Shanxi Jincheng Anthracite Mining Group Co.,Ltd.,Jincheng 048024,China)
出处
《煤矿安全》
CAS
北大核心
2019年第11期6-9,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目（51404163）
山西省煤层气联合基金资助项目（2014012006）
山西省青年科技研究基金资助项目（2014021036-2）
