A model for pressurised steam/O2-blown fluidised-bed gasification of biomass with catalytic reforming of hydrocarbons and tars was developed using Aspen Plus simulation software. Seven main blocks were used to model the fluidised-bed gasifier and two for the catalytic reformer. Modelling blocks were complemented with FORTRAN subroutines to simulate the observed non-equilibrium behaviour of the ...

I\I: ei:peril1lr~n:al s+;udy 01' f l L!idis2d ~eci 0ranulatiu.l is pre~ent2d. Preliminury ex~e;ililentc, est?~,;lisn the mCl i 1-, variabl'_s in the granulation pr'ocess and er.able a systemc.tic cxperimcr.tal programme to be Jevised. In this programrre, f';ither glass p(jwdel~ Ol~ po,ous alum~na are used as the bed rrateY·ial. The ef'ft~cts of the f:.mdame!1tal fluiciised bed granulation param...

The practice of cofiring biomass in full-scale coal utility plants is increasing, due to the benefits of reduced fossil fuel based CO2 emissions. Biomass also tends to have a lower sulphur content than coal and therefore emissions of SO2 can be reduced. The same is true for NOx emissions from lower fuel nitrogen content. Further, the lower flame temperatures and different combustion stoichiomet...

In this paper, the modelling and control of the moisture content of the particles in a batch Fluidised bed dryer are studied. First, a lumped mechanistic model is developed to describe the heat and mass transfer between solid, gas and bubble phases and experimental validation shows that the model can be used to predict the particle moisture content and temperature profiles during the drying pro...

In recent years, the interest in melt granulation has increased due to the advantages of this technique respect to traditional wet granulation; utilizable equipments for melt granulation are high-shear mixer and fluidised bed [1]. The aim of the study was to evaluate, by asymmetrical factorial design [2], the contribution of some variables on the in situ melt granulation process performed in fl...

Experiments were undertaken to study drying kinetics of moist cylindrical shaped food particulates during fluidised bed drying. Cylindrical particles were prepared from Green beans with three different length:diameter ratios, 3:1, 2:1 and 1:1. A batch fluidised bed dryer connected to a heat pump system was used for the experimentation. A Heat pump and fluid bed combination was used to increase ...

The uptake in Europe of Energy from Waste (EfW) incinerator plants has increased rapidly in recent years. In the UK, 25 municipal waste incinerators with energy recovery are now in operation; however, their waste supply chains and business practices vary significantly. With over a hundred more plant developments being considered it is important to establish best business practices for ensuring ...