Within this work, a novel 50 kWth indirectly heated bubbling fluidized bed steam reformer (IHBFBSR) is presented, along with its commissioning experiments. In the IHBFBSR, heat provided through two radiant tube natural gas burners in and freeboard area. The aim of innovative design sufficient provision for biomass reforming cracking reactions loss reduction, thus allowing possibility scaling-up...

To numerically study biomass gasification in a three-dimensional bubbling fluidized bed, CFD-DEM (computational fluid dynamics – discrete element method) model with heat transfer and homogeneous heterogeneous chemical reactions is implemented. An ideal reactor used for the air-steam bed (BFB) assuming perfectly mixed solids plug flow. A validated computational particle (CPFD) has been applied t...

In this paper, combustion of char in the riser of circulating fluidized bed was modeled using ASPEN PLUS. Since physical and chemical phenomena are involved in the process, the model integrates the two-phase hydrodynamic sub-model with the reaction sub-model derived from the literature. In the proposed model, the fluidized bed is divided into several sections and the behavior of each section wa...

A gasifier employs partial ignition of biomass and conversion to gaseous fuels high calorific value. Bubbling fluidized bed is a promising one amongst other gasification technologies like fixed bed, entrained flow etc. It has several noteworthy advantages large- small-scale applications, efficient heat mass transfer rates due its fuel flexibility, low capital operating costs, However, mixing ra...

This work investigates the interactions in NOX chemistry during biomass co-combustion a continuous lab-scale bubbling fluidized bed reactor. Co-combustion experiments were performed at air staged and unstaged conditions, gas composition flue within reactor was measured. The used fuels straw, sunflower husk, sewage sludge, seed. Based on NO concentration gas, straw-sunflower husk seed additive, ...