Co-production of furfural and ethanol from mixture of sugarcane bagasse and harvest residues in a biorefinery annexed to a sugar mill was investigated. The study considered energy self-sufficient scenarios producing furfural-only (scenario 1), ethanol-only (scenario 2) and integrated furfural-ethanol co-production at a range of operating conditions (scenarios 3–7). Scenario 1 was based on the industrial furfural process conditions (180 °C), which was replaced with steam explosion pretreatment at 205 °C in the ethanol-only Scenario 2. Furfural process conditions of Scenarios 3,4 and 6 were autocatalytic at 170 °C, 200 °C and 185 °C, respectively, while the furfural conditions with 0.5 wt% H₂SO₄ at 170 °C and 185 °C were applied for Scenarios 5 and 7, respectively. All investigated scenarios were simulated in Aspen Plus® V8.8, with economic viability expressed by internal rate of return (IRR). The integrated furfural and ethanol biorefinery (Scenario 5) was more profitable than the ethanol-only production (scenario 2) as indicated by 12.78 % and 10.18 % IRR, respectively. However, furfural-only biorefinery was the most profitable with IRR of 12.92 % as it was associated with lower total capital investments (272 million US$) and bypass (51 %). Although total capital investments (305 million US$) and feed bypass (58 %) were higher, the integrated furfural and ethanol biorefinery (Scenario 5) was more economically viable without electricity sales (IRR = 10.30 %) due to higher furfural yield (69 %). The economic benefits of furfural and ethanol co-production were limited by the process energy demands, which could only be supplied by feedstock available in the integrated biorefinery.

在蔗糖厂附属的生物精炼厂，研究了由甘蔗渣和收获残余物的混合物共同生产糠醛和乙醇的方法。该研究考虑了在一系列操作条件下仅产生糠醛（方案1），仅乙醇（方案2）和糠醛-乙醇联合生产的能源自给自足方案（方案3-7）。方案1是基于工业糠醛工艺条件（180°C）的，在仅乙醇的方案2中被205°C的蒸汽爆炸预处理所代替。方案3,4和6的糠醛工艺条件在170°C时自动催化C，200°C和185°C，而糠醛条件为0.5 wt％H ₂ SO ₄分别将场景5和7分别应用于170°C和185°C的温度。所有调查的方案均在AspenPlus®V8.8中进行了模拟，经济可行性由内部收益率（IRR）表示。整合的糠醛和乙醇生物提炼厂（方案5）比仅乙醇的生产（方案2）更有利可图，IRR分别为12.78％和10.18％。但是，仅糠醛生物精炼厂的利润率最高，IRR为12.92％，这与较低的总资本投资（2.72亿美元）和旁路（51％）相关。尽管总资本投资（3.05亿美元）和进料旁路（58％）更高，但由于糠醛收率更高（69），糠醛和乙醇生物精制一体化（方案5）在没有售电的情况下更具经济可行性（IRR = 10.30％）。 ％）。