Co-firing coal and biomass has the potential to reduce GHG emissions. However, high levels of alkali alkaline metals in ash can bring additional issues operation coal-fired boilers. This study investigates effects ilmenite as bed material on CO NOx emissions combustion efficiency a blend, agglomeration tendency with pilot-scale (30 kWth) bubbling fluidised combustor. The experiments were carrie...

Fluid flow through a bed of solid particles is an important process that occurs in full-scale water treatment operations. The Carman–Kozeny model remains highly popular for estimating the resistance across bed. It common practice to use particle shape factors fixed state match predicted drag coefficient with experimentally obtained coefficients. In fluidised state, however, where same are consi...

– We present a simple model of a vibrated box of sand, and discuss its dynamics in terms of two parameters reflecting static and dynamic disorder respectively. The fluidised, intermediate and frozen (‘glassy’) dynamical regimes are extensively probed by analysing the response of the packing fraction to steady, as well as cyclic, shaking, and indicators of the onset of glassy behaviour are analy...

Global wind energy is developing rapidly, with total installed capacity having increased from 24,332 MW in 2001 to 650,758 2019. Environmental concerns have been raised over the large volumes of waste that will be generated as these turbine blades are decommissioned coming decades. Although turbines largely clean during operation, manufacture and end-of-life stages they release emissions consum...

This research concerns the combustion of a biomass char in fluidised bed either inert silica particles or material capable supporting using chemical looping oxygen uncoupling (CLOU). An analytical solution for CLOU was developed, accounting reactions occurring within mass-transfer boundary layer finite thickness, surrounding particle. The considered were: (1) with to CO and CO2, (2) homogenous ...