Paper details

Title:

Comparison Between Equilibrium and Kinetic Models with Aspen Plus for a Full Scale Biomass Downdraft Gasifier

Author(s):

Frigo, S., Gabbrielli, R., Seggiani, M.

Document(s):

Abstract:

The development of numerical simulation models is an important tool in order to provide more accurate qualitative and quantitative information on biomass gasification process and the effect of process parameters. The modelling of the gasification process can be generally executed adopting one of the following approach: steady state models (equilibrium models), transient state models (kinetic models) and models based on the computational fluid dynamics. This paper shows a comparison between an equilibrium model and a kinetic one, applied to a full-scale woody biomass downdraft gasification plant using Aspen Plus® as simulation platform. The simulation results have been validated using the operativedata collected during the experimental activity on the gasifier, where the temperature profile within the reactor and gasifying air/syngas parameters (flowrate and temperature) are continuously measured. As a whole, the kinetic model assures a more reliable estimation of the syngas composition and the performance gasifier, compared with the equilibrium model.

Keywords:

biomass, cogeneration, gasification, modelling, Aspen Plus

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Gasification for synthesis gas production

Event:

25th European Biomass Conference and Exhibition

Session:

2CV.3.61

Pages:

860 - 866

ISBN:

978-88-89407-17-2

Paper DOI:

10.5071/25thEUBCE2017-2CV.3.61

Price:

FREE