TY - GEN
T1 - Soot formation from premixed ethylene and benzene flames
AU - Echavarria, Carlos A.
AU - Sarofim, A.
AU - Yang, Z.
AU - Lighty, J.
AU - D'Anna, A.
PY - 2007
Y1 - 2007
N2 - The main purpose of this study was to investigate the particle size distributions (PSD) from a flat-flame burner fueled with benzene and ethylene and compare these results to a simulation. Transmission electron microscopy (TEM) measurements are also reported to show the characteristics of the particles. Temperature and PSD were measured using thermocouple particle densitometry (TPD) and a scanning mobility particle sizer (SMPS, over the size range of 3 to 80nm) respectively. Samples for TEM analysis were obtained using a rapid insertion sampling technique. A detailed kinetic mechanism was used to model the experimental data. The model includes reaction pathways leading to the formation of nano-sized particles and their coagulation to larger soot particles by using a discrete-sectional approach for the gas-to-particle process. Good predictions of particle-phase concentrations and particle sizes in the two flames are obtained without any change to the kinetic scheme. In agreement with experimental data, the model predicts a higher formation of particulate in the benzene flame respect to the ethylene flame. Furthermore the model predicts that in the ethylene flame small precursor particles dominate the particulate loading in the whole flame whereas soot is the major component in the benzene flame.
AB - The main purpose of this study was to investigate the particle size distributions (PSD) from a flat-flame burner fueled with benzene and ethylene and compare these results to a simulation. Transmission electron microscopy (TEM) measurements are also reported to show the characteristics of the particles. Temperature and PSD were measured using thermocouple particle densitometry (TPD) and a scanning mobility particle sizer (SMPS, over the size range of 3 to 80nm) respectively. Samples for TEM analysis were obtained using a rapid insertion sampling technique. A detailed kinetic mechanism was used to model the experimental data. The model includes reaction pathways leading to the formation of nano-sized particles and their coagulation to larger soot particles by using a discrete-sectional approach for the gas-to-particle process. Good predictions of particle-phase concentrations and particle sizes in the two flames are obtained without any change to the kinetic scheme. In agreement with experimental data, the model predicts a higher formation of particulate in the benzene flame respect to the ethylene flame. Furthermore the model predicts that in the ethylene flame small precursor particles dominate the particulate loading in the whole flame whereas soot is the major component in the benzene flame.
KW - Model
KW - Particles size distribution
KW - Soot
KW - Distribution
KW - Particles size
UR - http://www.scopus.com/inward/record.url?scp=56349157186&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/record.url?scp=58049120095&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:58049120095
SN - 9780816910229
T3 - AIChE Annual Meeting, Conference Proceedings
BT - 2007 AIChE Annual Meeting
T2 - 2007 AIChE Annual Meeting
Y2 - 4 November 2007 through 9 November 2007
ER -