Simulation of tar-free biomass syngas enhancement in a calcium looping operation using Aspen Plus built-in fluidized bed model

摘要

The FluidBed model in Aspen Plus v10 is applied to simulate Calcium-looping for production of hydrogen-rich product gas from a bubbling fluidized bed carbonator of a dual fluidized bed (DFB) reactor. The predictions are compared with experimental results from a steady-state 20 kW(th) DFB biomass gasifier performing Ca-looping, fed with tar-free syngas. The effects of key operating parameters such as carbonator temperature, space time, Ca looping ratio and feed syngas composition are studied over substantial ranges. The good agreement between the predictions and experimental results suggests that the model is a useful tool which can be revised and extended to simulate lime-enhanced biomass gasification more generally.