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Development of an estimation model for the evaluation of the energy requirement of dilute acid pretreatments of biomass

机译：开发用于评估生物质稀酸预处理能量需求的估算模型

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摘要

This study aims to develop a mathematical model to evaluate the energy required by pretreatment processes used in the production of second generation ethanol. A dilute acid pretreatment process reported by National Renewable Energy Laboratory (NREL) was selected as an example for the model's development. The energy demand of the pretreatment process was evaluated by considering the change of internal energy of the substances, the reaction energy, the heat lost and the work done to/by the system based on a number of simplifying assumptions. Sensitivity analyses were performed on the solid loading rate, temperature, acid concentration and water evaporation rate. The results from the sensitivity analyses established that the solids loading rate had the most significant impact on the energy demand. The model was then verified with data from the NREL benchmark process. Application of this model on other dilute acid pretreatment processes reported in the literature illustrated that although similar sugar yields were reported by several studies, the energy required by the different pretreatments varied significantly.
机译：这项研究旨在建立一个数学模型，以评估用于生产第二代乙醇的预处理过程所需的能量。国家可再生能源实验室（NREL）报告的稀酸预处理工艺被选为该模型开发的一个实例。基于许多简化的假设，通过考虑物质内部能量的变化，反应能量，热损失以及系统完成的工作/系统所做的工作，对预处理过程的能源需求进行了评估。对固体载量，温度，酸浓度和水蒸发速率进行了敏感性分析。敏感性分析的结果表明，固体负载率对能量需求影响最大。然后使用来自NREL基准测试过程的数据验证模型。该模型在文献中报道的其他稀酸预处理过程中的应用表明，尽管几项研究报道了相似的糖产量，但不同预处理所需的能量差异很大。

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  • 来源
    《Biomass & bioenergy》 |2015年第1期|28-38|共11页
  • 作者

    Oluwakemi A.T. Mafe; Scott M. Davies; John Hancock; Chenyu Du;

  • 作者单位

    School of Biosciences, Sutton Bonington Campus, University of Nottingham, Loughborough LE12 5RD, United Kingdom;

    Briggs of Burton, Briggs House, Derby Street, Burton on Trent, Staffordshire DE14 2LH, United Kingdom;

    Briggs of Burton, Briggs House, Derby Street, Burton on Trent, Staffordshire DE14 2LH, United Kingdom;

    School of Biosciences, Sutton Bonington Campus, University of Nottingham, Loughborough LE12 5RD, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dilute acid pretreatment; Energy requirement; Lignocellulosic ethanol; Solids loading rate; Energy model;

    机译：稀酸预处理;能源需求;木质纤维素乙醇;固体负载率;能源模型;

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