Effect of liquid quenching on hydroprocessing of heavy crude oils in a fixed-bed reactor system / Anton Alvarez in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1228–1236 Titre : Effect of liquid quenching on hydroprocessing of heavy crude oils in a fixed-bed reactor system Type de document : texte imprimé Auteurs : Anton Alvarez, Auteur ; Jorge Ancheyta, Auteur Année de publication : 2009 Article en page(s) : p. 1228–1236 Note générale : Cemical engineering Langues : Anglais (eng) Mots-clés : Oil Gas Liquid Quenching Hydroprocessing Résumé : The effect of liquid quenching during the hydroprocessing of a heavy crude oil in a fixed-bed reactor system was explored. Experiments were carried out at various operating conditions in a pilot plant equipped with two fixed-bed reactors in series loaded with a triple catalyst system and necessary hardware for injecting quench fluids between reactors. The feed and quench liquid were prepared by splitting a heavy crude oil into two fractions, called light and heavy fractions. The heavy fraction was used as the feed to the reactors, whereas the light fraction was injected between reactors as the quenching liquid. To establish a reference case, a conventional hydrogen quenching scheme was also evaluated by injecting hydrogen instead of the light fraction. It was observed that hydrogen quenching produced only marginally better quality because of a more favorable H2/oil profile. Yet, it was determined that this approach (hydrogen quenching) requires the handling of large volumes of gas, which increases compressor capacity and equipment size. Liquid quenching, on the other hand, decreases the reaction severity by increasing the liquid hourly space velocity (LHSV), which affects product quality although not significantly. Compared with hydrogen quenching, liquid quenching dramatically reduces the quench volumetric rate and consequently compression costs, which makes this approach an economically attractive option for industrial application. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800686g [article] Effect of liquid quenching on hydroprocessing of heavy crude oils in a fixed-bed reactor system [texte imprimé] / Anton Alvarez, Auteur ; Jorge Ancheyta, Auteur . - 2009 . - p. 1228–1236. Cemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1228–1236 Mots-clés : Oil Gas Liquid Quenching Hydroprocessing Résumé : The effect of liquid quenching during the hydroprocessing of a heavy crude oil in a fixed-bed reactor system was explored. Experiments were carried out at various operating conditions in a pilot plant equipped with two fixed-bed reactors in series loaded with a triple catalyst system and necessary hardware for injecting quench fluids between reactors. The feed and quench liquid were prepared by splitting a heavy crude oil into two fractions, called light and heavy fractions. The heavy fraction was used as the feed to the reactors, whereas the light fraction was injected between reactors as the quenching liquid. To establish a reference case, a conventional hydrogen quenching scheme was also evaluated by injecting hydrogen instead of the light fraction. It was observed that hydrogen quenching produced only marginally better quality because of a more favorable H2/oil profile. Yet, it was determined that this approach (hydrogen quenching) requires the handling of large volumes of gas, which increases compressor capacity and equipment size. Liquid quenching, on the other hand, decreases the reaction severity by increasing the liquid hourly space velocity (LHSV), which affects product quality although not significantly. Compared with hydrogen quenching, liquid quenching dramatically reduces the quench volumetric rate and consequently compression costs, which makes this approach an economically attractive option for industrial application. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800686g

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