期刊
AICHE JOURNAL
卷 57, 期 12, 页码 3408-3428出版社
WILEY
DOI: 10.1002/aic.12544
关键词
energy; biofuels; bioethanol; process synthesis
资金
- NSF [CBET0966524]
- Ministry of Education and Science of Spain
- Fulbright commission
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0966524] Funding Source: National Science Foundation
In this article, we address the conceptual design of the bioethanol process from switchgrass via gasification. A superstructure is postulated for optimizing energy use that embeds direct or indirect gasification, followed by steam reforming or partial oxidation. Next, the gas composition is adjusted with membrane-PSA or water gas shift. Membrane separation, absorption with ethanol-amines and PSA are considered for the removal of sour gases. Finally, two synthetic paths are considered, high alcohols catalytic process with two possible distillation sequences, and syngas fermentation with distillation, corn grits, molecular sieves and pervaporation as alternative dehydration processes. The optimization of the superstructure is formulated as an mixed-integer nonlinear programming problem using short-cut models, and solved through a special decomposition scheme that is followed by heat integration. The optimal process consists of direct gasification followed by steam reforming, removal of the excess of hydrogen and catalytic synthesis, yielding a potential operating cost of $0.41/gal. (C) 2011 American Institute of Chemical Engineers AIChE J, 57: 3408-3428, 2011
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据