Abstract The gasification of sewage sludge (SS) and digestate was investigated in a pilot-scale fluidized bed gasifier with an output 100 kW t . treatment these by-products is ongoing challenge for sustainable development. SS are most commonly used as fertilizers. However, regulations restrict their use, mainly because the content heavy metals, pathogens bacteria. Gasification instead applicati...

A hydrodynamic model of a dual fluidized bed gasifier (DFBG) is developed and its predictions are compared with measurements solids flux pressure profiles from cold flow (CFM). Then, the performance DFBG theoretically analyzed in terms circulation distribution under changes riser loop seal aeration, inventory particle size, sensitivity analysis made to delimit prediction capability. Furthermore...

This work aims to assess the effect of operating parameters gasifying agent preheating temperature and equivalence ratio (ER) on conversion sewage sludge (SS) syngas through gasification combined heat power (CHP) generation. A novel model was simulated in Aspen Plus represent a fixed-bed updraft gasifier generate from SS an equilibrium approach restricted by temperature. The novelty this is tha...

Utilization of bioenergy with carbon capture can realize carbon-negative syngas production. The quadruple fluidized bed gasifier (QFBG) integrates a chemical looping oxygen generation process and dual limestone as material. It is one promising device that convert biomass to H2-rich whilst capturing CO2 little energy penalty. However, experimental or numerical simulation QFBG rarely reported on ...