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Conceptual Design of a Kraft Lignin Biorefinery for the Production of Valuable Chemicals via Oxidative Depolymerization
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-06-05 , DOI: 10.1021/acssuschemeng.0c02945 Omar Y. Abdelaziz 1 , Abdulrahman A. Al-Rabiah 2 , Mahmoud M. El-Halwagi 3 , Christian P. Hulteberg 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-06-05 , DOI: 10.1021/acssuschemeng.0c02945 Omar Y. Abdelaziz 1 , Abdulrahman A. Al-Rabiah 2 , Mahmoud M. El-Halwagi 3 , Christian P. Hulteberg 1
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Lignin is the most abundant aromatic biopolymer on Earth, and its aromatic structure makes it a promising platform for the production of biobased chemicals and other valuable building blocks. The valorization of lignin into chemicals currently presents a challenge, and its facilitation is key in the development of viable lignocellulosic biorefinery processes. This study presents a conceptual design for a recently demonstrated process for lignin oxidative depolymerization. Modeling, simulation, and analysis were performed based on experimental data to assess the viability of the process. Mass and energy balances and main design data were determined for a 700 t/y kraft lignin biorefinery. The production capacity of aromatic chemicals, including vanillin, vanillic acid, guaiacol, and acetovanillone, was 0.3 kg aromatics/kg net lignin use. A heat-integrated process design is suggested, and the energy demands and the CO2 emissions are evaluated and compared. Assuming an interest rate of 10% and a plant lifetime of 10 years, the return on investment was calculated to be 14%, indicating that such a biorefinery is viable. A sensitivity analysis was carried out to assess the impact of the vanillin selling price and the cost of lignin on the profitability of the process. A quantitative investigation of process sustainability resulted in an E-factor of ∼1.6 for the entire synthetic route, that is, 38% material efficiency. The findings of this study underline the need for further research to develop efficient lignin conversion technologies with attractive yields in order to increase profitability on an industrial scale.
中文翻译：
牛皮纸木质素生物精炼厂的概念设计，该产品可通过氧化解聚生产有价值的化学品
木质素是地球上最丰富的芳香生物聚合物，其芳香结构使其成为生产生物基化学品和其他有价值的构件的有前途的平台。目前，木质素在化学药品中的增值面临挑战，而其促进木质素纤维素生物精炼工艺的发展至关重要。这项研究为最近证明的木质素氧化解聚工艺提供了一种概念设计。根据实验数据进行建模，仿真和分析，以评估该过程的可行性。确定了700吨/年牛皮纸木质素生物精炼厂的质量和能量平衡以及主要设计数据。香兰素，香草酸，愈创木酚和乙酰香草醛等芳香族化学品的生产能力为0.3千克芳香族化合物/千克木质素净使用量。评估并比较2种排放。假设利率为10％，工厂寿命为10年，则计算得出的投资回报率为14％，表明这种生物精炼厂是可行的。进行了敏感性分析，以评估香草醛售价和木质素成本对工艺利润的影响。对过程可持续性的定量研究得出整个合成路线的E因子约为1.6，即38％的材料效率。这项研究的结果强调，有必要进一步研究开发具有有吸引力的收率的高效木质素转化技术，以提高工业规模的利润率。
更新日期：2020-06-05
中文翻译：
牛皮纸木质素生物精炼厂的概念设计，该产品可通过氧化解聚生产有价值的化学品
木质素是地球上最丰富的芳香生物聚合物，其芳香结构使其成为生产生物基化学品和其他有价值的构件的有前途的平台。目前，木质素在化学药品中的增值面临挑战，而其促进木质素纤维素生物精炼工艺的发展至关重要。这项研究为最近证明的木质素氧化解聚工艺提供了一种概念设计。根据实验数据进行建模，仿真和分析，以评估该过程的可行性。确定了700吨/年牛皮纸木质素生物精炼厂的质量和能量平衡以及主要设计数据。香兰素，香草酸，愈创木酚和乙酰香草醛等芳香族化学品的生产能力为0.3千克芳香族化合物/千克木质素净使用量。评估并比较2种排放。假设利率为10％，工厂寿命为10年，则计算得出的投资回报率为14％，表明这种生物精炼厂是可行的。进行了敏感性分析，以评估香草醛售价和木质素成本对工艺利润的影响。对过程可持续性的定量研究得出整个合成路线的E因子约为1.6，即38％的材料效率。这项研究的结果强调，有必要进一步研究开发具有有吸引力的收率的高效木质素转化技术，以提高工业规模的利润率。
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