温度对高浓度恒温厌氧发酵产沼气成分的影响  

Influence of temperature on composition of biogas fermented in high-concentrated thermostatic anaerobic environment

作　　者：李金平[1] 周丹丹[1] 张庆芳[1] 翟盼盼[1] 冯荣[1] 

机构地区：[1]兰州理工大学太阳能与气体水合物研究中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2012年第6期44-48,共5页Journal of Lanzhou University of Technology

基　　金：国家863计划(2007AA05Z261);国家科技支撑计划项目(2011BAD15B03);国家自然科学基金(51166008)

摘　　要：为了研究温度对高浓度恒温厌氧发酵产沼气成分的影响,在4个11.5L的发酵罐中并行批次实验研究19、30、37、52℃下总固体量(TS)为15%时鲜牛粪的恒温厌氧发酵过程,用沼气分析仪实时测量沼气成分.实验结果表明:37℃时厌氧发酵的产气量和产甲烷量最大,累积产气量为232L,累计甲烷产量为116.1L;比30、52℃下分别多产18.2、15.6L甲烷;52、37、30℃下厌氧发酵甲烷的平均体积分数分别为46.6%、46.5%和43.6%.In order to study the influence of temperature on composition of biogas fermented in high-con- centrated thermostatic anaerobic environment, the process of anaerobic fermentation of fresh cattle manure with solid concentration of 15% was experimentally investigated, four parallel anaerobic digesters of 11.5 L in volume at 19, 30, 37℃ and 52 ℃ respectively in batch mode. Real-time measurement of biogas compositions was carried out with biogas analyzer. The experimental result showed that the highest cumu- lative yield of biogas and the highest methane yield took place at 37 ℃, the former being 232 L and the lat- ter being 116. 1 L, which compared with the yields at 30, 52 ℃were more than 18. 2 L and 15.6 L. The average methane volume content in anaerobic fermentation at 52, 37 ℃ and 30 ℃ was 46.6%, 46. 5% and 43. 6 %, respectively.

关 键 词：恒温厌氧发酵 沼气成分 甲烷 高浓度 

分 类 号：TK6[动力工程及工程热物理—生物能]