Modeling the temperature in coal char particle during fluidized bed combustion

Manović, Vasilije; Komatina, Mirko; Oka, Simeon

doi:10.1016/j.fuel.2007.05.020

Cited by 23 publications

(24 citation statements)

References 33 publications

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“…(32). The primary CO/CO 2 ratio is very significant for the calculation of the particle temperature during combustion (Manovic et al, 2008). Arthur's empirical expression is used to calculate the ratio CO/CO 2 (Ménard, 2003) and the intrinsic pre-exponential factor and the activation energy are taken from Cooper and Hallett (2000).…”

Section: Physical Chemical Stagesmentioning

confidence: 99%

Coupling scales for modelling heavy metal vaporization from municipal solid waste incineration in a fluid bed by CFD

et al. 2015

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Section: Physical Chemical Stagesmentioning

confidence: 99%

Coupling scales for modelling heavy metal vaporization from municipal solid waste incineration in a fluid bed by CFD

et al. 2015

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“…Manovic et al [10] authored one of the most important papers dealing with coal-char particle behavior during its incineration in a fluidized bed. Manović s model is based on the formulation proposed by Ilic et al [11], mainly used for the analysis of sulfur chemistry during coal-particle combustion.…”

Section: Nonisothermal-particle Combustionmentioning

confidence: 99%

Nonisothermal particle modeling of municipal solid waste combustion with heavy metal vaporization

Mazza

Falcoz

Soria

et al. 2010

Combustion and Flame

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“…One of the basic challenges in modelling chemically reacting moving char particles is the realistic modelling of transport properties in the gas phase and the coupling of the boundary conditions at the chemically reacting interface with the gas flow. It should be noted that in many numerical studies the so‐called Stefan flow is not included in considerations, for example, see the works …”

Section: Introductionmentioning

confidence: 99%

Particle resolved simulations of carbon oxidation in a laminar flow

Safronov

Kestel

Nikrityuk³

et al. 2014

Can J Chem Eng

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This work is devoted to the numerical study of the impact of the Reynolds number and the ambient gas temperature on the partial oxidation of a single moving coal particle. The model includes six gaseous chemical species, three semi‐global heterogeneous surface reactions, and three homogeneous gas reactions. The Navier–Stokes equations coupled with the energy and species conservation equations were used to solve the problem. The diameter of the particles considered was set up as 2 mm and 200normalμm. An analysis of the simulations related to the influence of particle Reynolds numbers on integral characteristics such as surface‐averaged carbon consumption rates revealed that the oxidation rate increases with increasing gas velocity, which is logical. However, the increase in the particle Reynolds number leads to the prolongation of the kinetically controlled regime from lower to higher temperatures, which is explained by the enhancement of the mass transfer between the particle and the surrounding gas. Using visualization of the temperature and species mass fraction distributions around the reacting particles predicted numerically, the three well‐known basic oxidation regimes, namely the diffusion‐controlled, transitional, and kinetically controlled regimes are described, taking into account the impact of the particle Reynolds number on the dynamics of oxidation. The influence of radiation in the gas phase on oxidation rates was studied numerically using P1 radiation model. Additionally the behaviour of heterogeneous Damköhler numbers, Thiele modulus and effectiveness factors depending on the ambient temperature and particle Reynolds number was analyzed and discussed.

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Modeling the temperature in coal char particle during fluidized bed combustion

Cited by 23 publications

References 33 publications

Coupling scales for modelling heavy metal vaporization from municipal solid waste incineration in a fluid bed by CFD

Coupling scales for modelling heavy metal vaporization from municipal solid waste incineration in a fluid bed by CFD

Nonisothermal particle modeling of municipal solid waste combustion with heavy metal vaporization

Particle resolved simulations of carbon oxidation in a laminar flow

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