5th International Conference on Sustainable Development (ICSD 2019), Belgrade, Serbia, 17 - 21 April 2019, pp.66-72
Biomass gasification is an encouraging thermochemical process that converts this residue mainly into
syngas, which may be applied to electricity, generate heat, and fuels. However, the biomass gasification is
quite complex and dependent on many interrelated and independent variables because of gasification
reactions including water-shift and Boudouard reactions.
In this study, a novel biomass gasification model for wheat-straw was developed to simulate the air–steam
gasification in a fluidized bed for syngas production using Gibbs reactor (RGIBBS) in Aspen Plus
simulator, which is based on the minimization of Gibbs energy, has been used in this work for the whole
gasification unit. To reveal the effects of gasification parameters; gasifier temperature, steam flow rate
were investigated using sensitivity analysis.
The major evaluation criteria are estimation accuracy and generality of the developed gasifier model. The
model is validated by data from literature and found relatively to be in good agreement. Results show that
higher steam over air composition increases heating value of syngas.