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Building and application of delayed coking structure - oriented lumping model / Lida Tian in Industrial & engineering chemistry research, Vol. 51 N° 10 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 10 (Mars 2012) . - pp. 3923–3931 Titre : Building and application of delayed coking structure - oriented lumping model Type de document : texte imprimé Auteurs : Lida Tian, Auteur ; Benxian Shen, Auteur ; Jichang Liu, Auteur Année de publication : 2012 Article en page(s) : pp. 3923–3931 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Building  coking Résumé : A structure-oriented lumping (SOL) model to predict the product distribution of delayed coking was built. The effects of feedstock properties and operational conditions on product distribution were analyzed with the proposed model. It was known from model calculation results that for the feedstock residue of this paper, the liquid yield increased 2.5% on average with a temperature increase of 10 °C, that mainly was equal to a 0.15 increase H/C of feedstock; the liquid yield increased 3.5% on average with a recycle ratio decrease of 0.15, that was mainly equal to a 5% carbon residue decrease of feedstock; and liquid yield increased 0.6% on average with a pressure decrease of 0.03 MPa. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2025272 [article] Building and application of delayed coking structure - oriented lumping model [texte imprimé] / Lida Tian, Auteur ; Benxian Shen, Auteur ; Jichang Liu, Auteur . - 2012 . - pp. 3923–3931. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 10 (Mars 2012) . - pp. 3923–3931 Mots-clés : Building  coking Résumé : A structure-oriented lumping (SOL) model to predict the product distribution of delayed coking was built. The effects of feedstock properties and operational conditions on product distribution were analyzed with the proposed model. It was known from model calculation results that for the feedstock residue of this paper, the liquid yield increased 2.5% on average with a temperature increase of 10 °C, that mainly was equal to a 0.15 increase H/C of feedstock; the liquid yield increased 3.5% on average with a recycle ratio decrease of 0.15, that was mainly equal to a 5% carbon residue decrease of feedstock; and liquid yield increased 0.6% on average with a pressure decrease of 0.03 MPa. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2025272

Novel solvent deasphalting process by vacuum residue blending with coal tar / Jian Long in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11259–11269 Titre : Novel solvent deasphalting process by vacuum residue blending with coal tar Type de document : texte imprimé Auteurs : Jian Long, Auteur ; Benxian Shen, Auteur ; Hao Ling, Auteur Année de publication : 2011 Article en page(s) : pp. 11259–11269 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Coal Résumé : The effect of the solvent deasphalting (SDA) process of vacuum residue (VR) blending with coal tar (CT) was studied, and the experimental conditions were optimized. The results revealed that the SDA process was improved by blending with coal tar. The yield of deasphalted oil (DAO) from VR blended with 10% CT was 2.02 wt % higher than that obtained from VR alone. The contents of nickel and vanadium decreased by 5%, and the sulfur content also decreased, whereas the contents of carbon residue and nitrogen remained unchanged. Components such as alkanes and low-condensation aromatics were easily extracted into DAO, leading to an increase of its yield and quality. The viscosity and colloid stability of VR declined after being blended with CT. Furthermore, the structures of VR and CT were characterized, and their structural models were proposed. Thus, their solubility parameters were calculated. According to dissolved balance theory, the mechanism of how the blended CT improved the SDA process was analyzed based on the test results of the surface tension of the extraction and the analysis of the average molecular structure parameters of DAO. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573323 [article] Novel solvent deasphalting process by vacuum residue blending with coal tar [texte imprimé] / Jian Long, Auteur ; Benxian Shen, Auteur ; Hao Ling, Auteur . - 2011 . - pp. 11259–11269. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11259–11269 Mots-clés : Coal Résumé : The effect of the solvent deasphalting (SDA) process of vacuum residue (VR) blending with coal tar (CT) was studied, and the experimental conditions were optimized. The results revealed that the SDA process was improved by blending with coal tar. The yield of deasphalted oil (DAO) from VR blended with 10% CT was 2.02 wt % higher than that obtained from VR alone. The contents of nickel and vanadium decreased by 5%, and the sulfur content also decreased, whereas the contents of carbon residue and nitrogen remained unchanged. Components such as alkanes and low-condensation aromatics were easily extracted into DAO, leading to an increase of its yield and quality. The viscosity and colloid stability of VR declined after being blended with CT. Furthermore, the structures of VR and CT were characterized, and their structural models were proposed. Thus, their solubility parameters were calculated. According to dissolved balance theory, the mechanism of how the blended CT improved the SDA process was analyzed based on the test results of the surface tension of the extraction and the analysis of the average molecular structure parameters of DAO. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573323