Experiments and mathematical modeling of maize pyrolysis in a rotary kiln

被引：23
作者：
Klose, W [1 ]
Wiest, W [1 ]
机构：
[1] Univ Gesamthsch Kassel, Inst Thermal Engn, D-34109 Kassel, Germany
来源：
FUEL | 1999年 / 78卷 / 01期
关键词：
pyrolysis; modeling; rotary kiln;
D O I：
10.1016/S0016-2361(98)00124-0
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Pyrolysis of maize is experimentally investigated in a bench-scale rotary kiln in semi-continuous operation. The operational parameters varied are the temperature (450-800 degrees C), the solids residence time (7-20 min) and the solids space time (117-417 min). Mathematical modeling includes (a) the determination of suitable functions describing the material properties, (b) the selection of a reaction scheme and a formal kinetics approach in order to calculate the source terms of the balance equations, and (c) the solution of the so defined system of differential equations. Stoichiometric coefficients and formal kinetic parameters are estimated from thermoanalytic and rotary kiln experiments by regression. The results show the expected strong influence of pyrolysis temperature and a noticeable influence of space velocity. The solids residence time shows no significant influence on product yields. The model results describe well the experimental data; however, the influence of space velocity is slightly overpredicted. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：65 / 72
页数：8
相关论文
共 24 条
[1]  
[Anonymous], 1986, THERMODYNAMIC TRANSP
[2]  
Antal M.J., 1985, Advances in Solar Energy, V2, P175, DOI [10.1007/978-1-4613-9951-3_4, DOI 10.1007/978-1-4613-9951-3_4]
[3]  
Antal MJ, 1985, FUNDAMENTALS THERMOC, P511, DOI [10.1007/978-94-009-4932-4_29., DOI 10.1007/978-94-009-4932-4_29]
[4]  
Antal MJ, 1982, ADV SOLAR ENERGY, VI, P61
[5]  
ARSENAULT RH, 1980, ACS SYM SER, V130, P337
[6]  
BAYER E, 1988, RESEARCH IN THERMOCHEMICAL BIOMASS CONVERSION, P518
[7]   PRODUCT YIELDS AND KINETICS FROM THE VAPOR-PHASE CRACKING OF WOOD PYROLYSIS TARS [J].
BOROSON, ML ;
HOWARD, JB ;
LONGWELL, JP ;
PETERS, WA .
AICHE JOURNAL, 1989, 35 (01) :120-128
[8]  
Bridgwater A.V., 1991, Biomass Pyrolysis Liquids Upgrading and Utilisation, DOI DOI 10.1007/978-94-011-3844-4_2
[9]  
BROOKS DG, 1989, 118 ANN M AM I MIN M, P461
[10]   MATHEMATICAL-MODELING OF THE ROTARY COKE CALCINING KILN [J].
BUI, RT ;
SIMARD, G ;
CHARETTE, A ;
KOCAEFE, Y ;
PERRON, J .
CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1995, 73 (04) :534-545
123