Thermodynamic Analysis of Municipal Solid Waste Gasification Under Isothermal and Adiabatic Conditions by a Gibbs Free Energy Minimization Model

被引:6
|
作者
de Oliveira, Joao F. [1 ]
Corazza, Marcos L. [1 ]
Voll, Fernando A. P. [1 ]
机构
[1] Univ Fed Parana, Dept Chem Engn, BR-81531990 Curitiba, Parana, Brazil
关键词
Gasification; Municipal solid waste; Equilibrium modelling; Syngas; BIOMASS GASIFICATION; HYDROGEN-PRODUCTION; EQUILIBRIUM; PERFORMANCE;
D O I
10.1007/s12649-017-0190-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An equilibrium model has been developed to predict the composition of a gaseous mixture obtained from the gasification process of the Curitiba City Municipal Solid Waste (MSW). The ultimate analysis of this MSW was also obtained in this study (C = 53.60%, H = 6.74%, N = 1.85%, S = 0.21%, O = 31.03%, Ash = 6.57%), what is necessary when there is lack of experimental information on the elemental composition of the feedstock. Simulations for different gasification scenarios were carried out regarding autothermic and supercritical operations. The developed model was validated with experimental data from literature and was used for optimizing the gasification of MSW according to the amount of air injected in the system, feedstock moisture, temperature and pressure in the gasifier. It was observed that an increase in the pressure of an adiabatic process can increase the lower heat value (LHV) of the gas if the moisture is also increased until an optimum condition. Isothermal processes simulated with supercritical water at high temperatures (higher than that reached in the adiabatic scenarios) resulted in higher LHVs of the gas product.
引用
收藏
页码:1383 / 1393
页数:11
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