Single coal particle ignition behavior was studied in a two-dimensional (200mm×20mm×400mm) fluidized bed under O2/N2 and O2/CO2 atmosphere with O2 volume concentration in the range of 0–40%, by a combination of visual observation of the volatile flame and measurement of the particle center...

The Ca-Looping (CaL) technology, based on a dual gas-fluidized bed system of CaO/CaCO3 particles operated at high temperature, is a viable technological process for highly efficient pre-combustion and post-combustion CO2 capture. In this paper we show a lab-scale experimental study on the...

Fuel flexibility and the ability to burn low-grade fuels are major advantages generally associated with fluidized bed combustion. The use of demanding heterogeneous fuels such as biomass, however, not only increases the need for monitoring the dynamics of the process but also complicates the...

The article is devoted to investigating some fundamentals about a residue cracking gasification (RCG) process for petroleum residues which integrates the catalytic cracking of the residue and the gasification of the cracking-generated coke. Three heat carrier particles were tested to show their...

A 50kg/h autothermal two-stage gasifier, consisting of a fluidized bed (FB) pyrolyzer and a downdraft fixed-bed gasifier, has been designed and built according to our previous laboratory researches. In the experiments, lignite gasification was performed in this innovative two-stage gasifier to...

Some of the major agricultural residues of Mediterranean countries, orange tree pruning, leaves and peels and their blends, were evaluated for heat production. The experiments were conducted in a lab-scale fluidized bed facility. Temperature distributions along the reactor and flue gas emissions...

There are several challenges confronting energy production nowadays, such as increasing the efficiency of combustion processes and at the same time reducing harmful emissions. The latter, however, often necessitates process improvement, which requires knowledge of the behavior of the process. It...

Fluidized bed flash pyrolysis experiments have been conducted on a sample of jatropha oil cake to determine particularly the effects of particle size, pyrolysis temperature and nitrogen gas flow rate on the pyrolysis yields. The particle size, nitrogen gas flow rate and temperature of jatropha...

This work presents two methods for evaluating the lateral dispersion coefficient in a fluidized bed for three different fuel types, namely wood chips, pellets and char of pellets. Mixing of the different fuels is also related to the mixing of bed material to evaluate to what extent they are...

A laboratory-scale prototype windowed reactor using a fluidized bed of coal coke particles was tested for thermochemical gasification using concentrated Xe light radiation as an energy source. The fluidized-bed reactor, designed to be combined with a solar reflective tower or beam-down optics,...