热化学预处理玉米秸秆厌氧消化产气特性研究  

BIOGAS PRODUCTION CHARACTERISTICS OF ANAEROBIC DIGESTION OF CORN STALK AFTER THERMO-CHEMICAL PRETREATMENT

作　　者：王芳[1] 牛卫生[2] 罗冰[1] 王祥[1] 易维明[1] 

机构地区：[1]山东理工大学农业工程与食品科学学院,淄博255049 [2]沈阳农业大学大学工程学院,沈阳110866

出　　处：《太阳能学报》2015年第8期1965-1970,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50876056;51276103);山东省自然科学基金(ZR2011EL041)

摘　　要：以玉米秸秆为原料,对经热化学处理后的秸秆进行发酵试验,设置堆腐预处理和碱预处理玉米秸秆发酵作为对比试验。所得试验结果为:热化学预处理玉米秸秆单位容积最大日产气量为1.122 L/d,发酵30 d的单位容积累计产气量为15.995 L,平均甲烷含量为45.85%;发酵完成后,热化学预处理玉米秸秆总固体与挥发性去除率分别为35.50%与39.32%,比未处理玉米秸秆分别提高14.15%与10.64%。在对比发酵试验中,热化学预处理的处理效果与堆腐预处理相似,但低于碱预处理。Taking corn stalk as feedstock, a fermentation experiment after thermo-chemical pretreatment was taken, and another two pretreatment methods were also performed as contrast, wet rot pretreatment and alkaline pretreatment. The results show that after thermo-chemical pretreatment, the maximum yield of biogas is 1.122 L/d of unit fermentation volume, and the total biogas yield is 15.995 L of unit fermentation volume for 30 days. And average methane ratio is 45.85%. After fermentation, its total solid and volatile reduction ratio are 35.50% and 39.32%, respectively, which increase 14.15% and 10.64% comparing with the untreated, respectively. In the contrast fermentation experiment, the result of thermo-chemical pretreatment is as same as wet rot pretreatment, while it is worse than alkaline pretreatment.

关 键 词：热化学 预处理 流化床 热解 厌氧发酵 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.4[农业科学—农业机械化工程]