Three zone equilibrium and kinetic free modeling of biomass gasifier – a novel approach

Biomass gasification with CO2 in a fluidized bed

“…The predicted LHV gas decreased with increasing moisture content of wood from 5% to 20% wet basis, because there was a greater reduction in mole fraction of CO than the increase in mole fraction of H 2 [41]. Since the producer gas flow rate increased while LHV gas decreased with moisture content, the decrease of CGE with moisture content was less significant as compared to LHV gas [42].At a constant percentage of CO 2 in the gasifying agent, the numerical results showed that mole fraction of CO 2 increased with increasing wood moisture content, but the CO 2 conversion ratio showed a decreasing trend. Therefore, in order to achieve high fractional CO 2 conversion, it was still recommended to dry the high moisture wood to a certain degree before introducing the wood into the gasifier.…”

Biomass gasification models for downdraft gasifier: A state-of-the-art review

“…Ratnadhariya and Channiwala [30] proposed a three-zone equilibrium and kinetic free model of biomass gasifier. The first zone of the model was drying and pyrolysis combined together; the second and third zones were oxidation and reduction, respectively.…”

Process simulation of biomass gasification in a bubbling fluidized bed reactor

“…If chemical equilibrium is assumed to be achievable, accurate modeling of solid/liquid fuel gasification and prediction of the optimum conditions is straightforward [20][21][22]. However, gasification reaction rate at low temperatures is slight, equilibrium results would be more deviated from experimental measurements [23,24].…”