摘要
为提高秸秆与煤共降解产气率,通过单因素试验考察了温度、pH值、煤粉粒径、秸秆与煤的比例四个因素对秸秆与褐煤共降解产气的影响,并根据单因素试验结果选取合适的因素水平进行了正交试验。单因素试验结果表明:温度、pH值、煤粉粒径、秸秆与煤的比例对秸秆促进褐煤厌氧降解产气均有显著影响;正交试验结果得出最优产气条件为:培养温度40℃,pH值为7.5,煤粉粒径为0.45~0.90 mm,秸秆与煤的比例为1.5∶1,在此条件下60 d甲烷产率为63.39 mL/g。四个因素对产气影响均显著,其中秸秆与煤的比例影响最大。
In order to obtain a higher biogas production capacity through co-degradation of corn straw and lignite, the influence produced by each of the following four factors is investigated-temperature, pH value, lignite particle size and straw-lignite ratio. The orthogonal test is then made based on the appropriate factor levels selected according to single factor test result. Test result shows that each of the abovegoing factors can exert a noticeable effect on the biogas production rate;as evidenced by orthogonal test, an optimal gas production condition can be achieved at an culture temperature of 40 ℃, a pH value of 7.5, a lignite particle size range of 0.45~0.90 mm and a straw/lignite ratio of 1.5 ∶1;under such conditions, the net methane production rate in 60 days can reach 63.39 mL/g;and the straw/lignite ratio is the most influential factor among the others.
作者
宋燕莉
吴鹏
刘健
陈林勇
谭凯丽
王美林
SONG Yanli;WU Peng;LIU Jian;CHEN Linyong;TAN Kaili;WANG Meilin(State Key Laboratory of Coal and CBM Co-mining,Shanxi Jinneng Holding Group Co.Ltd.,Jincheng 048000,China;Yi'an Lanyan Coal and Coal-bed Methane Simultaneous Extraction Technology Co.Ltd.,Jincheng 048000,China)
出处
《选煤技术》
CAS
2022年第4期28-33,共6页
Coal Preparation Technology
基金
山西省煤层气联合研究基金项目(2016012009)
山西省应用基础研究计划项目青年科技研究基金(201801D221354)。
关键词
褐煤利用
秸秆
共降解产气
单因素试验
正交试验
甲烷产率
秸秆与煤的比例
utilization of lignite
corn straw
co-degradation
single-factor test
orthogonal test
methane yield
straw/lignite ratio
