Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA.
Bioresour Technol. 2010 Oct;101(19):7382-8. doi: 10.1016/j.biortech.2010.04.078. Epub 2010 May 21.
Process design and economic analysis of a biorefinery for the treatment of citrus wastes (CW) at different capacities was carried out. The CW is hydrolyzed using dilute sulfuric acid and then further processed to produce limonene, ethanol and biogas. The total cost of ethanol for base case process with 100,000 tons/year CW capacity was calculated as 0.91 USD/L, assuming 10 USD/ton handling and transportation cost of CW to the plant. However, this price is sensitive to the plant capacity. With constant price of methane and limonene, changing the plant capacity from 25,000 to 400,000 tons CW per year results in reducing ethanol costs from 2.55 to 0.46 USD/L in an economically feasible process. In addition, the ethanol production cost is sensitive to the transportation cost of CW. Increasing this cost from 10 to 30 USD/ton for the base case results in increasing the ethanol costs from 0.91 to 1.42 USD/L.
针对不同处理能力的柑橘废弃物（CW）处理厂进行了工艺设计和经济分析。使用稀硫酸水解 CW，然后进一步加工生产柠檬烯、乙醇和沼气。假设将 CW 以 10 美元/吨的处理和运输成本运输到工厂，对于年产 10 万吨 CW 的基础案例工艺，乙醇的总成本计算为 0.91 美元/升。然而，这个价格对工厂产能很敏感。在甲烷和柠檬烯价格不变的情况下，将工厂产能从 2.5 万吨/年到 40 万吨/年变化，可使乙醇成本从经济可行的工艺中的 2.55 美元/升降低到 0.46 美元/升。此外，乙醇的生产成本对 CW 的运输成本敏感。对于基础案例，将该成本从 10 美元/吨增加到 30 美元/吨，会导致乙醇成本从 0.91 美元/升增加到 1.42 美元/升。
