This work assessed the economics of the organosolv fractionation of eucalyptus to compare the returns from valorizing lignin to phenols and polyols with the production of cellulosic ethanol and chemicals. An organosolv plant, co-located with a eucalyptus kraft pulp mill in Brazil, that sells technical lignin at $300/t, can produce glucose by enzymatic hydrolysis at a minimum selling price of 9.2 ¢/lb ($203/t). Investments to valorize the lignin to polyols can generate returns comparable to the production of cellulosic chemicals (Cumulative Cash Ratio between 2 and 4 depending on the plant scale) and are more profitable than producing either ethanol or non-upgraded products. Furthermore, for situations in which cellulolytic enzymes are not available at a competitive cost, this study concluded that eucalyptus pulp companies should prioritize their investments in the valorization of lignin to increase their odds of being competitive with sucrose produced by the sugarcane industry.

这项工作评估了桉树有机溶剂分馏的经济性，以比较从木质素转化为酚类和多元醇的收益与纤维素乙醇和化学品生产的收益。一家与巴西桉树硫酸盐纸浆厂位于同一地点的有机溶剂工厂，以 300 美元/吨的价格出售工业木质素，可以通过酶水解生产葡萄糖，最低售价为 9.2 美分/磅（203 美元/吨）。将木质素转化为多元醇的投资可以产生与纤维素化学品生产相当的回报（累积现金比率介于 2 和 4 之间，取决于工厂规模），并且比生产乙醇或未升级的产品更有利可图。此外，对于无法以具有竞争力的成本获得纤维素分解酶的情况，