Abstract
ABSTRACT We demonstrate that carbon molecular weight growth chemistry can continue to occur when polycyclic aromatic hydrocarbons (PAH), produced by localized fuel rich pockets within an incinerator, disperse into the near-stoichiometric bulk flow characteristic of the unit. Naphthalene, a model PAH, was added to a near-stoichiometric (φ = 1.2) post-flame combustion flow produced by premixed C2H4/O2/N2/Air combustion in a jet-stirred/plug-flow reactor system (JSR/PFR), and the results compared against those from a fuel rich (φ = 2.2) post-flame combustion flow without naphthalene addition. In both experiments, the PFR was sampled for soot (CH2Cl2 insolubles), tar (CH2Cl2 solubles; PAH), C2H2 and other light gases. The results indicate that naphthalene addition to the φ = 1.2 flow produces PAH in the naphthalene (M W = 128) to cyclopenta[cd]pyrene(MW = 226) fraction at exactly the same total mass concentration as observed in the φ = 2.2 flow without naphthalene addition. Similarly, the rate of growth of so...
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