Derivation of models for the fusing of soot aggregates from carbon black reactor data
Author(s)
O'Sullivan, Daniel
Diemer Jr, Russell B
Rigopoulos, Stelios
Type
Journal Article
Abstract
Soot aggregate fusing models have rarely been employed in sooting flame simulations. Previously, such models have been based on sintering models of inorganic nanoparticles (silica/titania). The objective of the present article is to derive a soot fusing model from a graphitic material, namely carbon black. While there are differences between soot and carbon black, the significant similarities allow a carefully selected group of carbon black grades to function as a soot-proxy for the derivation of a fusing model. Two appropriate subsets of carbon black grades are found, with the key difference being the relative amounts of surface oxygen content in each subset. The later stage of the furnace black reactor process is characterized by the direct competition of aggregation and fusing in an oxygen and fuel starved environment. This serves as the basis for an inverse population balance approach, that allows the characteristic fusing timescale to be determined for a given set of input reactor conditions. Two fusing models are produced each corresponding to the subset of carbon black grades and reactor conditions used. A linear relationship between the characteristic fusing timescale and primary particle diameter was found in both models. The models are used to simulate several inert reheating experiments with four different soot samples. Each fusing model can predict well the experimentally observed fusing behavior of soot samples that corresponded closest to the composition of the original carbon black data employed for its derivation.
Date Issued
2025-04-03
Date Acceptance
2024-12-02
Citation
Aerosol Science and Technology, 2025, 59 (4), pp.451-469
ISSN
0278-6826
Publisher
Taylor and Francis Group
Start Page
451
End Page
469
Journal / Book Title
Aerosol Science and Technology
Volume
59
Issue
4
Copyright Statement
� 2025 The Author(s). Published with license by Taylor & Francis Group, LLCThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permitsunrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow theposting of the Accepted Manuscript in a repository by the author(s) or with their consent.
License URL
Subjects
COAGULATION
COALESCENCE
Engineering
Engineering, Chemical
Engineering, Mechanical
Environmental Sciences
Environmental Sciences & Ecology
EVOLUTION
FLAME
Jason Olfert
Life Sciences & Biomedicine
Meteorology & Atmospheric Sciences
MORPHOLOGY
OXIDATION
PARTICLES
Physical Sciences
Science & Technology
SILICA
SIMULATION
SURFACE-AREA
Technology
Publication Status
Published
Date Publish Online
2025-02-07