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...

0TUse of lignocellulosic biomass as an alternative, renewable and sustainable source of energy has fulfilled part of the growing demand for energy in developed countries. Amongst various technologies applied to convert biomass wastes to biofuel and bioenergy, biomass gasification has attracted considerable attention. In this work, gasification of palm empty fruit bunch as a potential lignocellu...

In recent years, hydrogen production from biomass has been optimized in fluidized bed conditions, and the steam gasification has become an area of growing interest because it produces a gaseous fuel with relatively higher H2 content which could be used in fuel cells, a new technology for the future to produce power in a much cleaner manner. The equivalence ratio is one of the most important ope...

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 ...

In this paper, multi-layer feed forward neural networks are used to predict the lower heating value of gas (LHV), lower heating value of gasification products including tars and entrained char (LHVp) and syngas yield during gasification of municipal solid waste (MSW) during gasification in a fluidized bed reactor. These artificial neural networks (ANNs) with different architectures are trained ...

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...

Using woody biomass as a resource for production of biofuel, heat and power through gasification has been studied for years. In order to reduce the cost of operating and to design the full-scale gasification plant developing a general model to be applicable for different ranges of input data with acceptable level of accuracy, is needed. In order to develop such model for the gasifier, as the ma...