Modelization of the grape marc pyrolysis and combustion based on an extended independent parallel reaction and determination of the optimal kinetic constants

Brillard, Alain; Brilhac, Jean-François; Valente, Maximilien

doi:10.1007/s40314-015-0216-5

Cited by 2 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coke devolatilization was assimilated to anthracite [41]. Grape seed devolatilization kinetics were obtained by means of Thermo-Gravimetric Analysis (TGA) experiments under similar combustion conditions [48].…”

Section: Co-firing Modelmentioning

confidence: 99%

CFD Analysis of Co-firing of Coke and Biomass in a Parallel Flow Regenerative Lime Kiln

Arévalo

Rezeau

Herce

2022

Waste Biomass Valor

View full text Add to dashboard Cite

The lime industry is a highly energy intensive industry, with a huge presence worldwide. To reduce both production costs and pollutants emissions, some lime production plants are introducing more environmentally-friendly energy sources, such as local agro-industry residues. In this paper, a numerical tool is presented, which simulates a large-scale Parallel Flow Regenerative (PFR) kiln that currently uses coke as main fuel. The developed tool aims at investigating the combustion process under conditions of co-firing of coke and biomass and to assist the plant operators in the optimization of such operating conditions. To achieve this goal, a two-way coupling Euler–Lagrange approach is used to model the dynamics of the particulate phase and their interaction with the gas phase. Pyrolysis, volatiles oxidation and char oxidation are modelled by kinetics/diffusion-limited model (for heterogeneous reactions) and mixture fraction approach (for homogeneous reactions). Moreover, two methods are investigated for representing the limestone bed: a porous medium (PM) approach and a “solid blocks” (BM) tridimensional mesh. Comparison of the results for the case of 100% coke showed that the ideal “blocks” method is more accurate as it adequately simulates the scattering of fuel particles through the PFR kiln anchor, which is limited with the PM approach. Moreover, the temperature profile, maximum and minimum temperatures, as well as CO2 and O2 concentrations at outlet, are comprised in the expected range for this technology, according to available literature. Finally, the predicted results of a co-firing case with 60% biomass (in mass) were validated with measurements in an industrial facility, with production capacity of 440 calcium oxide tons per day. The results suggest that the model is fairly accurate to predict gas temperature, as well as O2 and NOX concentrations at the kiln outlet. Although some improvements are recommended to refine the CFD predictions, these promising results and the high computational efficiency laid the foundation for future modelling of co-firing of coke and biomass, as well as the modelling of the lime calcination process. It also paves the way for facilitating the reduction of pollutant emissions thus contributing to a more sustainable lime production. Graphical Abstract

show abstract

Section: Co-firing Modelmentioning

confidence: 99%

CFD Analysis of Co-firing of Coke and Biomass in a Parallel Flow Regenerative Lime Kiln

Arévalo

Rezeau

Herce

2022

Waste Biomass Valor

View full text Add to dashboard Cite

show abstract

“…The EIPR model has been tested at GRE lab for different materials, see [2] and [3] for example. Reference articles for the simulation of the thermal degradation of lignocellulosic materials with independent reactions are [4] and [5], among others.…”

Section: Choice Of the Reaction Functionmentioning

confidence: 99%

Models accounting for the thermal degradation of combustible materials under controlled temperature ramps

Brillard¹,

Gilot²,

Brilhac³

2017

Adv. sci. technol. eng. syst. j.

View full text Add to dashboard Cite

Modelization of the grape marc pyrolysis and combustion based on an extended independent parallel reaction and determination of the optimal kinetic constants

Cited by 2 publications

References 11 publications

CFD Analysis of Co-firing of Coke and Biomass in a Parallel Flow Regenerative Lime Kiln

CFD Analysis of Co-firing of Coke and Biomass in a Parallel Flow Regenerative Lime Kiln

Models accounting for the thermal degradation of combustible materials under controlled temperature ramps

Contact Info

Product

Resources

About