Technoeconomic analysis of the dilute sulfuric acid and enzymatic hydrolysis process for the conversion of corn stover to ethanol
Technoeconomic analysis of the dilute sulfuric acid and enzymatic hydrolysis process for the conversion of corn stover to ethanol
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DOI：
10.1007/s10570-009-9327-8
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发表时间：
2009-08-01
期刊：
影响因子：
5.7
通讯作者：
Foust, Thomas
中科院分区：
文献类型：
--
作者：
Aden, Andy;Foust, Thomas
二十多年来，技术经济分析一直用于指导木质纤维素生物燃料生产工艺的研究和开发。这种分析有助于查明这些转换进程的主要技术障碍，以便能够最有效地针对相关挑战开展研究。这里介绍了用于开发概念转换过程并分析其经济性的工具和方法。此外，目前的工艺设计和经济效益的稀酸预处理后，酶水解和发酵。2012年，这一商业规模的玉米秸秆转化工艺的模拟乙醇成本目标为1.33美元/加仑（按2007年美元计算）。采用实际研究结果并将其投入商业规模的技术状况模型估计，目前乙醇的成本为2.43美元/加仑。为了进一步降低成本，必须在几个领域进行工艺改进，包括预处理、酶水解和发酵。随着生物质工业的发展，人们正在研究新的燃料和新的原料。技术经济分析将在工艺开发和针对这些新燃料和原料的技术和经济障碍方面发挥关键作用。
Technoeconomic analysis has been used to guide the research and development of lignocellulosic biofuels production processes for over two decades. Such analysis has served to identify the key technical barriers for these conversion processes so that research can be targeted most effectively on the pertinent challenges. The tools and methodology used to develop conceptual conversion processes and analyze their economics are presented here. In addition, the current process design and economic results are described for dilute acid pretreatment followed by enzymatic hydrolysis and fermentation. Modeled ethanol costs of $1.33/gallon (in consistent year 2007 dollars) are being targeted for this commercial scale corn stover conversion process in 2012. State of technology models, which take actual research results and project them to commercial scale, estimate an ethanol cost of $2.43/gallon at present. In order to further reduce costs, process improvements must be made in several areas, including pretreatment, enzymatic hydrolysis, and fermentation. As the biomass industry develops, new fuels and new feedstocks are being researched. Technoeconomic analysis will play a key role in process development and targeting of technical and economic barriers for these new fuels and feedstocks.