Kinetic modeling of the formation and growth of inorganic nano-particles during pulverized coal char combustion in O2/N2 and O2/CO2 atmospheres

Shaddix, Christopher R.; Niu, Yanqing; Hui, Shi'en; Wang, Shuai

doi:10.1016/j.combustflame.2016.08.021

Kinetic modeling of the formation and growth of inorganic nano-particles during pulverized coal char combustion in O₂/N₂ and O₂/CO₂ atmospheres

Journal Article · Mon Aug 01 00:00:00 EDT 2016 · Combustion and Flame

DOI:https://doi.org/10.1016/j.combustflame.2016.08.021· OSTI ID:1326060

Shaddix, Christopher R. ^[1]; Niu, Yanqing ^[2]; Hui, Shi'en ^[3]; Wang, Shuai ^[2]

Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Xi'an Jiaotong Univ., Xi'an (China)
Xi'an Jiaotong Univ., Shaanxi (China)

In this formation of nano-particles during coal char combustion, the vaporization of inorganic components in char and the subsequent homogeneous particle nucleation, heterogeneous condensation, coagulation, and coalescence play decisive roles. Furthermore, conventional measurements cannot provide detailed information on the dynamics of nano-particle formation and evolution, In this study, a sophisticated intrinsic char kinetics model that considers ash effects (including ash film formation, ash dilution, and ash vaporization acting in tandem), both oxidation and gasification by CO₂ and H₂O, homogeneous particle nucleation, heterogeneous vapor condensation, coagulation, and and coalescence mechanisms is developed and used to compare the temporal evolution of the number and size of nano-particles during coal char particle combustion as a function of char particle size, ash content, and oxygen content in O₂/N₂ and O₂/CO₂ atmospheres .

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-CA), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1326060

Alternate ID(s):: OSTI ID: 1396678

Report Number(s):: SAND--2016-8661J; PII: S0010218016302322

Journal Information:: Combustion and Flame, Journal Name: Combustion and Flame Vol. 173; ISSN 0010-2180

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A complete review based on various aspects of pulverized coal combustion Yadav, Sujeet; Mondal, Swasti Sundar International Journal of Energy Research, Vol. 43, Issue 8 https://doi.org/10.1002/er.4395	journal	February 2019
Review on modelling approaches based on computational fluid dynamics for biomass combustion systems: Focus on fixed bed and moving grate systems Dernbecher, Andrea; Dieguez-Alonso, Alba; Ortwein, Andreas Biomass Conversion and Biorefinery, Vol. 9, Issue 1 https://doi.org/10.1007/s13399-019-00370-z	journal	February 2019

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