Energy consumption analysis of integrated flowsheets for production of fuel ethanol from lignocellulosic biomass

被引:196
作者
Alzate, C. A. Cardona
Toro, O. J. Sanchez
机构
[1] Univ Nacl Colombia, Dept Chem Engn, Manizales, Colombia
[2] Univ Caldas, Dept Engn, Manizales, Colombia
关键词
fuel ethanol; process synthesis; process integration; net energy value;
D O I
10.1016/j.energy.2005.10.020
中图分类号
O414.1 [热力学];
学科分类号
摘要
Fuel ethanol is considered one of the most important renewable fuels due to the economic and environmental benefits of its use. Lignocellulosic biomass is the most promising feedstock for producing bioethanol due to its global availability and to the energy gain that can be obtained when non-fermentable materials from biomass are used for cogeneration of heat and power. In this work, several process configurations for fuel ethanol production from lignocellulosic biomass were studied through process simulation using Aspen Plus. Some flowsheets considering the possibilities of reaction-reaction integration were taken into account among the studied process routes. The flowsheet variants were analyzed from the energy point of view utilizing as comparison criterion the energy consumption needed to produce I L of anhydrous ethanol. Simultaneous saccharification and cofermentation process with water recycling showed the best results accounting an energy consumption of 41.96MJ/L EtOH. If pervaporation is used as dehydration method instead of azeotropic distillation, further energy savings can be obtained. In addition, energy balance was estimated using the results from the simulation and literature data. A net energy value of 17.65-18.93 MJ/L EtOH was calculated indicating the energy efficiency of the lignocellulosic ethanol. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2447 / 2459
页数:13
相关论文
共 20 条
[11]   Net energy and gross pollution from bioethanol production in India [J].
Prakash, R ;
Henham, A ;
Bhat, IK .
FUEL, 1998, 77 (14) :1629-1633
[12]  
Reith JH, 2001, 1 EUR C AGR REN EN R
[13]   CONTINUOUS FERMENTATION OF CELLULOSIC BIOMASS TO ETHANOL [J].
SOUTH, CR ;
HOGSETT, DA ;
LYND, LR .
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 1993, 39 :587-600
[14]   Reduced inhibition of enzymatic hydrolysis of steam-pretreated softwood [J].
Tengborg, C ;
Galbe, M ;
Zacchi, G .
ENZYME AND MICROBIAL TECHNOLOGY, 2001, 28 (9-10) :835-844
[15]   Bioconversion of lignocellulose in solid substrate fermentation [J].
Tengerdy, RP ;
Szakacs, G .
BIOCHEMICAL ENGINEERING JOURNAL, 2003, 13 (2-3) :169-179
[16]   Dehydration of ethanol on a pilot-plant scale, using a new type of hollow-fiber membrane [J].
Tsuyumoto, M ;
Teramoto, A ;
Meares, P .
JOURNAL OF MEMBRANE SCIENCE, 1997, 133 (01) :83-94
[17]   A TECHNOECONOMIC COMPARISON OF 3 PROCESSES FOR THE PRODUCTION OF ETHANOL FROM PINE [J].
VONSIVERS, M ;
ZACCHI, G .
BIORESOURCE TECHNOLOGY, 1995, 51 (01) :43-52
[18]  
Wang M., 1999, ANLESD38 CTR TRANSP
[19]  
Wooley R., 1999, LIGNOCELLULOSIC BIOM
[20]  
Wooley RJ., 1996, Development of an ASPEN PLUS physical property database for biofuels components. United States, DOI DOI 10.2172/257362