Solid waste plasma gasification: Equilibrium model development and exergy analysis

Plasma gasification technology has been demonstrated in recent studies as one of the most effective and environmentally friendly methods for solid waste treatment and energy utilization. This study focuses on the thermodynamic analysis of plasma gasification technology, which includes prediction of the produced synthesis gas, energy and exergy calculations. To that purpose, an equilibrium plasma gasification model, called GasifEq, is developed here by using recent thermodynamic data, which also considers the possibility for soot formation, as a solid carbon by-product. The GasifEq model also has the capability of energy and exergy calculations that are required for the optimization of such processes. This is demonstrated by the presentation of the effect of the most important process parameters on the energetic performance of the process.

[1]  Kj Krzysztof Ptasinski,et al.  Thermodynamics of gas-char reactions: first and second law analysis , 2003 .

[2]  M. J. Moran,et al.  Thermal design and optimization , 1995 .

[3]  H. Hofbauer,et al.  Biomass steam gasification--an extensive parametric modeling study. , 2001, Bioresource technology.

[4]  M. Aznar,et al.  Biomass gasification in atmospheric and bubbling fluidized bed: effect of the type of gasifying agent on the product distribution , 1999 .

[5]  F. Pinto,et al.  Effect of experimental conditions on co-gasification of coal, biomass and plastics wastes with air/steam mixtures in a fluidized bed system☆ , 2003 .

[6]  Carlos Roberto Altafini,et al.  Prediction of the working parameters of a wood waste gasifier through an equilibrium model , 2003 .

[7]  Kun-Hong Lee,et al.  Estimation of the heating value of oily mill sludges from steel plant , 1995 .

[8]  Tomás Cordero,et al.  Predicting heating values of lignocellulosics and carbonaceous materials from proximate analysis , 2001 .

[9]  Bernd Calaminus,et al.  Continuous in-line gasification/vitrification process for thermal waste treatment : process technology and current status of projects , 1998 .

[10]  L J Circeo,et al.  An ecotoxic risk assessment of residue materials produced by the plasma pyrolysis/vitrification (PP/V) process. , 2002, Waste management.

[11]  Zhong-yang Luo,et al.  Biomass pyrolysis/gasification for product gas production: the overall investigation of parametric effects , 2003 .

[12]  Fernando Rojas,et al.  A thermochemical concept-based equation to estimate waste combustion enthalpy from elemental composition☆ , 2003 .

[13]  C. Yaws Chemical properties handbook , 1999 .

[14]  I. Georgiev,et al.  Some general conclusions from the results of studies on solid fuel steam plasma gasification , 1992 .

[15]  B. Stanmore,et al.  The oxidation of soot: a review of experiments, mechanisms and models , 2001 .

[16]  K. N. Seetharamu,et al.  Prediction of performance of a downdraft gasifier using equilibrium modeling for different biomass materials , 2001 .

[17]  Philippe Mathieu,et al.  Performance analysis of a biomass gasifier , 2002 .