【摘要】 基于Aspen Plus设计并建立了处理量为40万吨/年的陈化稻谷全粉碎发酵工艺流程。采用(火用)分析法对工艺的热力学性能进行了研究，明确(火用)损失来源并进行了优化改造，研究结果表明：优化前工艺(火用)损失为106 477.62 kW,优化后(火用)损失为79 108.84 kW,经优化(火用)损失减少27 368.78 kW,(火用)效率提高了5.97%。生产1 t燃料乙醇总能耗为1 424.69 MJ,消耗原料4.25 t,耗水量和废水量分别为2.99和0.37 t,在满足生产过程中蒸汽用量需求的基础上产生电力15.03 MW,系统消耗1.29 MW。通过对优化前后工艺进行经济性分析发现，优化后的工艺经济性较好，工艺优化后公用工程的费用减少了52.76%,总成本降低了49.73元/吨，每年的净利润升高了2.85%。更多还原

【Abstract】 Based on Aspen Plus, a total comminution fermentation process of aged rice with a capacity of 4 hundred thousand tons per year was designed and established. Exergy analysis method was used to study the thermodynamic properties of the process, and the source of exergy loss was clarified and optimized. The results showed that exergy loss was 106 477.62 kW before optimization, and the exergy loss was 79 108.84 kW after optimization. Meanwhile, the exergy loss was reduced by 27 368.78 kW and the exergy efficiency increased by 5.97% after optimization. The total energy consumption of 1 ton fuel ethanol production was 1 424.69 MJ, the raw material consumption was 4.25 ton, and the consumptions of water and wastewater were 2.9 and 0.37 ton, respectively. On the basis of meeting the demand of steam consumption in the production process, the power generation was 15.03 MW, and the system consumption was 12.9 MW. Through the economic analysis of the processes before and after optimization, the optimized process had better economy. The cost of public works decreased by 52.76%, the total cost decreased by 49.73 yuan per ton and the annual net profit increased by 2.85% after process optimization.更多还原