The aim of the present paper is to study the gasification and combustion of biomass and waste materials. A model for the analysis of the chemical kinetics of gasification and combustion processes was developed with the main objective of calculating the gas composition at different operating conditions. The model was validated with experimental data for sawdust gasification. After having set the main kinetic parameters, the model was tested with other types of biomass, whose syngas composition is known. A sensitivity analysis was also performed to evaluate the influence of the main parameters, such as temperature, pressure, and air-fuel ratio on the composition of the exit gas. Both oxygen and air (i.e., a mixture of oxygen and nitrogen) gasification processes were simulated.

1.
Binford
J. S.
, and
Eyring
H.
,
1956
, “
Kinetics of the Steam-Carbon Reaction
,”
Journal of Physical Chemistry
, Vol.
60
, pp.
486
491
.
2.
Bingyan
X.
,
Chuangzhi
W.
,
Zhengfen
L.
, and
Xiguang
Z.
,
1992
, “
Kinetic Study on Biomass Gasification
,”
Solar Energy
, Vol.
49
, No.
3
, pp.
199
204
.
3.
Ergun
S.
,
1956
, “
Kinetics of the Reaction of Carbon Dioxide with Carbon
,”
Journal of Physical Chemistry
, Vol.
60
, pp.
480
485
.
4.
Laidler, K. J., 1987, Chemical Kinetics, Harper & Row Publishers, New York, NY.
5.
Lamorey, G. W., Jenkins, B. M., and Gross, J. R., 1986, “LP Engine and Fluidized Bed Gas Producer Performance,” American Society of Agricultural Engineers (ASAE), Paper No. 86–3072.
6.
Lewis
P. F.
, and
Simons
G. A.
,
1979
, “
Char Gasification: Part II. Oxidation Results
,”
Combustion Science and Technology
, Vol.
20
, pp.
117
124
.
7.
Mehrling, P., and Vierrath, H., 1989, “Gasification of Lignite and Wood in the Lurgi Circulating Fluidized-Bed Gasifier,” Electric Power Research Institute GS-6436, Project 2656–3, Final Report.
8.
Reed, T. B., 1981, Biomass Gasification-Principles and Technology, Noyes Data Corporation, Park Ridge, NJ.
9.
Sahu
R.
,
Levendis
Y. A.
,
Flagan
R. C.
, and
Gavalas
G. R.
,
1988
, “
Physical Properties and Oxidation Rates of Chars from three Bituminous Coals
,”
Fuel
, Vol.
67
, pp.
275
283
.
10.
Stull, D. R., et al., 1965, JANAF Thermochemical Tables, Dow Chemical Company.
11.
Wang
Y.
, and
Kinoshita
C. M.
,
1992
, “
Experimental Analysis of Biomass Gasification with Steam and Oxygen
,”
Solar Energy
, Vol.
49
, No.
3
, pp.
153
158
.
12.
Wang
Y.
, and
Kinoshita
C. M.
,
1993
, “
Kinetic Model of Biomass Gasification
,”
Solar Energy
, Vol.
51
, No.
1
, pp.
19
25
.
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