木薯酒精发酵副产物的能源利用实验探究  

Study on energy utilization of by-products of cassava alcohol fermentation

作　　者：黄正恒 柳静[1] 杨红 刘士清[1] 尹芳[1] 张无敌[1] Huang Zhengheng;Liu Jing;Yang Hong;Liu Shiqing;Yin Fang;ZhangWudi(School of Energy and Environmental Sciences,Yunnan Normal University,Solar Energy Institute,Yunnan Kunming 650500)

机构地区：[1]云南师范大学能源与环境科学学院(太阳能研究所),云南昆明650500

出　　处：《云南化工》2020年第6期39-43,共5页Yunnan Chemical Technology

基　　金：国家自然科学基金(51366015);云南省应用基础研究计划青年项目(2018FD018);云南省教育厅科研项目(2018JS146);云南省沼气工程技术研究中心联合资助。

摘　　要：探究2kg木薯经过酒精发酵后酒精废水进行固液分离,得到5.98 L COD质量浓度为29340mg/L的废液和1.36kg酒精废渣。2kg木薯经过酒精发酵后产生的副产物为酒精废水。通过实验和计算可得,酒精废水经过固液分离后得到5.98L酒精废液,1.36kg酒精废渣,5.98L酒精废液经过UASB反应器处理后可得到55.13L甲烷,能替代118.3L煤气;1.36kg木薯渣经过CSTR反应器处理后可得到116.33L甲烷,可替代249.42L煤气。以年产1万t木薯燃料乙醇酒精厂为例进行经济分析,酒精发酵副产物的合理利用能降低酒精生产过程中的能耗,提高酒厂利润,该论文为木薯酒精废液污染治理提供了有益的参考。This paper investigated the solid-liquid separation of 2 kg of cassava wastewater after alcohol fermentation,and obtained 5.98 L of waste liquid with a COD concentration of 29340 mg/L and 1.36 kg of alcohol waste residue.2 kg of cassava by-product after alcohol fermentation is alcohol wastewater.Through the experiment and calculation,the alcohol wastewater was separated into 5.98 L alcohol waste liquid and 1.36 kg alcohol waste residue.After the treatment of 5.98 L alcohol waste liquid in UASB reactor and it is get 55.13 L methane,which can replace 118.3 L coal gas.The 1.36 kg of cassava residue was treated by CSTR reactor and it is get 116.33 L of methane,which can replace 249.42 L of coal gas.A cassava ethanol distillery with an annual capacity of 100,000 t was taken as an example for economic analysis.The rational use of byproducts of alcohol fermentation can reduce energy consumption in alcohol production and increase winery profits.This paper provides a useful reference for pollution control of cassava alcohol waste liquor.

关 键 词：木薯酒精 能源利用 沼气发酵 经济分析 

分 类 号：TQ427.26[化学工程]