Premium
A numerical model of the synthesis of carbon black by benzene pyrolysis
Author(s) -
Ivie J. J.,
Forney L. J.
Publication year - 1988
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690341107
Subject(s) - nucleation , carbon black , pyrolysis , particle (ecology) , carbon fibers , benzene , coagulation , particle number , work (physics) , kinetics , chemistry , thermodynamics , gas phase , particle size , chemical engineering , materials science , physics , organic chemistry , composite material , classical mechanics , psychology , natural rubber , oceanography , psychiatry , volume (thermodynamics) , composite number , engineering , geology
A numerical model has been developed to predict the formation of carbon black particles by benzene pyrolysis. The approach, patterned after the work of Jensen, assumes that particle formation is controlled by four steps: gas phase reactions producing radical species, nucleation, growth and coagulation, and oxidation. In the present model, 15 reactions based on the work of Fujii and Asaba are used to describe the gas phase kinetics in which the phenyl radical is treated as the important intermediate in the formation of carbon black. A discrete distribution of 10 particle radii is also used to approximate the simultaneous growth and coagulation of spherical carbon particles. The results of the model show that a self‐preserving log normal distribution of carbon particles develops after an initial nucleation and growth period. The model results also compare favorably with reactor data. In particular, the numerical model predicts a mass median carbon particle diameter to within 10% of measured values.