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采用热化学转化和糖化工艺技术均可将木质纤维素原料转化为乙醇。这些技术可用来确定不同生物质精炼方案的经济可行性,税后内部收益率可作为判断方案是否可行的标准。本研究评价了制浆造纸厂整合生物质精炼的几个可选方案。根据价格是否合理和原料是否易得,以及查阅有关生物质精炼工艺的文献资料,认为玉米乙醇是最具可行性的选择,可使生产规模较大的工厂的税后内部收益率超过20%。仅次于玉米乙醇的另外一个选择是热化学转化合成混合醇工艺,同样具有经济效益。
Lignocellulosic feedstocks can be converted to ethanol using thermochemical conversion and saccharification processes. These techniques can be used to determine the economic viability of different biomass refining programs, and the after-tax internal rate of return can be used as a criterion for determining whether a program is viable. This study evaluated several options for pulp mill integration of biomass refining. According to the reasonable price and the availability of raw materials, as well as the literature on biomass refining, corn ethanol is considered as the most viable option that will allow the internal rate of return after tax of a large-scale factory to exceed 20%. The second alternative to corn ethanol is the thermo-chemical synthesis of mixed alcohols, which is also economically viable.