摘要
考察了以玉米秸秆为原料生产燃料乙醇的工艺流程,对年产5万t燃料乙醇的生产工艺进行了技术经济和敏感性分析.蒸馏能耗分析表明,当发酵醪中乙醇浓度高于4%(ω)时蒸馏的能耗比较低.年产5万t燃料乙醇的直接固定成本约1.37亿元,乙醇的最低成本为8425$/t.该工艺能副产3.75万tCO2和215t杂醇油,可带来额外收益2386万元.经济敏感性分析表明,纤维素酶价格对生产成本的影响较显著,副产物CO2的回收利用可明显增加收益.
The process technology for fuel ethanol production from corn straw was investigated, and then the techno-economic and sensitivity analysis were conducted on an annual capacity of 50000 t ethanol. The simulation shows that the energy consumption of crude distillation tower is obviously low when the ethanol concentration in fermentation broth is higher than 4%（o）. Direct fixed capital of the process is about 137 million yuan and the lowest cost for cellulosic ethanol is 8 425 ￥/t. The annual by-product output of 37 500 t CO2 and 215 t fusel oil would bring additional revenue 23.86 million yuan. The economic sensitivity analysis shows that the price of cellulase is relatively sensitive to the production cost of ethanol, and the recovery and utilization of CO2 are obviously favorable for profit of process.
出处
《过程工程学报》
CAS
CSCD
北大核心
2012年第1期97-104,共8页
The Chinese Journal of Process Engineering
