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Impact of flare destruction efficiency and products of incomplete combustion on ozone formation in houston, texas / Fahad M. Al Fadhli in Industrial & engineering chemistry research, Vol. 51 N° 39 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12663-12673 Titre : Impact of flare destruction efficiency and products of incomplete combustion on ozone formation in houston, texas Type de document : texte imprimé Auteurs : Fahad M. Al Fadhli, Auteur ; Yosuke Kimura, Auteur ; Elena C. McDonald-Buller, Auteur Année de publication : 2012 Article en page(s) : pp. 12663-12673 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Pollutant  formation  Combustion Résumé : The impact of flare destruction removal efficiency (DRE) and Products of Incomplete Combustion (PICs) on ozone formation was examined using a regional photochemical model. Emission scenarios for five industrial flares were considered. For each flare, four DRE values (95, 90, 75, and 50%) were assumed, along with a base case that assumed 98 or 99% DRE. For each DRE level, a scenario assuming that no PICs and a scenario assuming a level of PICs consistent with full scale flare tests was evaluated. Simulation results indicated that low DREs can increase ambient ozone concentrations by more than 15 ppb under some conditions, but under other conditions, may raise ozone concentrations by 1 ppb or less. Emission rates of unburned flare gases and the chemical reactivity of the unburned hydrocarbons explain much of the variability in ozone formation. The air quality simulations also showed that unburned flare gases can have a larger impact on ozone formation than PICs. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26419221 [article] Impact of flare destruction efficiency and products of incomplete combustion on ozone formation in houston, texas [texte imprimé] / Fahad M. Al Fadhli, Auteur ; Yosuke Kimura, Auteur ; Elena C. McDonald-Buller, Auteur . - 2012 . - pp. 12663-12673. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12663-12673 Mots-clés : Pollutant  formation  Combustion Résumé : The impact of flare destruction removal efficiency (DRE) and Products of Incomplete Combustion (PICs) on ozone formation was examined using a regional photochemical model. Emission scenarios for five industrial flares were considered. For each flare, four DRE values (95, 90, 75, and 50%) were assumed, along with a base case that assumed 98 or 99% DRE. For each DRE level, a scenario assuming that no PICs and a scenario assuming a level of PICs consistent with full scale flare tests was evaluated. Simulation results indicated that low DREs can increase ambient ozone concentrations by more than 15 ppb under some conditions, but under other conditions, may raise ozone concentrations by 1 ppb or less. Emission rates of unburned flare gases and the chemical reactivity of the unburned hydrocarbons explain much of the variability in ozone formation. The air quality simulations also showed that unburned flare gases can have a larger impact on ozone formation than PICs. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26419221

Temporal variability in flaring emissions in the houston–galveston area / Radovan T. Pavlovic in Industrial & engineering chemistry research, Vol. 51 N° 39 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12653–12662 Titre : Temporal variability in flaring emissions in the houston–galveston area Type de document : texte imprimé Auteurs : Radovan T. Pavlovic, Auteur ; David T. Allen, Auteur ; Elena C. McDonald-Buller, Auteur Année de publication : 2012 Article en page(s) : pp. 12653–12662 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Industrial  air  pollutant  emission Résumé : Recent studies performed in the Houston–Galveston–Brazoria (HGB) area indicate that some industrial air pollutant emission sources exhibit high temporal variability that can lead to very rapid ozone formation, especially when emissions include highly reactive volatile organic compounds. This motivated the collection of a unique data set of air pollutant emissions, from industrial facilities, reported with an hourly time resolution. The industrial flares portion of this data set was utilized in this work to characterize and model the highly variable temporal patterns of flare emissions at petrochemical facilities. Petrochemical and chemical manufacturing flares were grouped into categories based on industrial process they service, chemical composition of the flared gas, and the temporal patterns of their emissions. Stochastic models were developed for each categorization of flare emissions and provide representative temporal profiles for flares in specific types of operations in the petrochemical and chemical manufacturing sectors. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2013357 [article] Temporal variability in flaring emissions in the houston–galveston area [texte imprimé] / Radovan T. Pavlovic, Auteur ; David T. Allen, Auteur ; Elena C. McDonald-Buller, Auteur . - 2012 . - pp. 12653–12662. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12653–12662 Mots-clés : Industrial  air  pollutant  emission Résumé : Recent studies performed in the Houston–Galveston–Brazoria (HGB) area indicate that some industrial air pollutant emission sources exhibit high temporal variability that can lead to very rapid ozone formation, especially when emissions include highly reactive volatile organic compounds. This motivated the collection of a unique data set of air pollutant emissions, from industrial facilities, reported with an hourly time resolution. The industrial flares portion of this data set was utilized in this work to characterize and model the highly variable temporal patterns of flare emissions at petrochemical facilities. Petrochemical and chemical manufacturing flares were grouped into categories based on industrial process they service, chemical composition of the flared gas, and the temporal patterns of their emissions. Stochastic models were developed for each categorization of flare emissions and provide representative temporal profiles for flares in specific types of operations in the petrochemical and chemical manufacturing sectors. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2013357