Kinetic modeling of deep vacuum residue hydroconversion in a pilot scale continuous slurry reactor with recycle

Browning, Barbara; Couenne, Françoise; Jansen, Tim; Lacroix, Maxime; Álvarez, Pedro M.; Tayakout‐Fayolle, Mélaz

doi:10.1016/j.ceja.2020.100063

Cited by 5 publications

(6 citation statements)

References 52 publications

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“…In contrast to hydrocracking kinetic studies, batch systems were preferred for investigation of slurry phase hydroconversion. However, Loria et al used an upflow tubular continuous reactor and some authors used semibatch reactors ,, or, more recently, CSTRs. ,, Studies with AR and VR feedstocks ,,,,,,,, were performed under severe operating conditions with a temperature range of 380–460 °C and hydrogen pressures of 7–16 MPa. Kinetic experiments were performed with an oil-soluble Mo precursor, such as octoate or naphthenate, and Song et al used an ammonium phosphomolybdate (APM) catalyst.…”

Section: Detailed Review Of Kinetic Parameters For Each Type Of Processmentioning

confidence: 99%

“…Note that Asaee et al used the same data as Song et al but a modified kinetic model. From our group, Alvarez et al and Browning et al , reported results for two distributed lumped slurry phase hydroconversion models. Here, those results have been consolidated to give overall reaction constants for the RES and VGO lumps.…”

Section: Detailed Review Of Kinetic Parameters For Each Type Of Processmentioning

confidence: 99%

“…However, Loria et al 55 used an upflow tubular continuous reactor and some authors used semibatch reactors 20,32,90 or, more recently, CSTRs. 58,59,91 Studies with AR 70 and VR feedstocks 16,20,32,53,57,59,79,90,91 were performed under severe operating conditions with a temperature range of 380−460 °C and hydrogen pressures of 7−16 MPa. Kinetic experiments were performed with an oil-soluble Mo precursor, such as octoate or naphthenate, and Song et al 79 stocks.…”

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

“…Browning et al 32 constructed a distributed lumped kinetic model for slurry phase hydroconversion of a Safaniya VR at four operating temperatures in a semibatch reactor and, later, improved and extended it for an Iranian heavy VR in an industrial scale pilot with recycle. 91 The pilot plant included two CSTRs in series, and multiple campaigns of several sets of experimental conditions were tested, hence the large number of data points shown on the graphs in Figure 14. The interest of defining the RES and VGO lumps as a series of smaller distributed lumps is that it allows physical properties and, in particular, the molar mass of the overall lumps to evolve with conversion.…”

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

“…Heavy RES produced only D and coke, whereas light RES produced all the smaller lumps. The results shown in Figure 14 for Browning et al 32,91 are for the global RES and VGO lumps. For the RES lump, the reaction rate parameters calculated for hydroconversion of Safaniya VR in a semibatch reactor 32 are similar to those found with earlier, more simple models 53,79,84 but are slightly lower, probably due to higher RES conversion (and, hence, the presence of morerefractory material).…”

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

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A Review of Thermal Cracking, Hydrocracking, and Slurry Phase Hydroconversion Kinetic Parameters in Lumped Models for Upgrading Heavy Oils

et al. 2021

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Reaction constants for vacuum gas oil (VGO) hydrocracking and slurry phase hydroconversion of residues are calculated and positioned with respect to results from the literature. This perspective shows that results are well-correlated, despite a range of experimental set-ups and various feedstocks, author assumptions, and kinetic schemes being used. We observe that for vacuum residues (VR), slurry phase hydroconversion is essentially equivalent to thermal cracking with free radical production stabilized through hydrogenation reactions. This work also highlights the importance of catalyst type for conversion of heavy oils, identifies limitations in estimating kinetic parameters for the VGO lump in thermal cracking, and validates our results.

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Section: Detailed Review Of Kinetic Parameters For Each Type Of Processmentioning

confidence: 99%

Section: Detailed Review Of Kinetic Parameters For Each Type Of Processmentioning

confidence: 99%

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

Section: Detailed Review Of Kinetic Parameters Formentioning

confidence: 99%

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A Review of Thermal Cracking, Hydrocracking, and Slurry Phase Hydroconversion Kinetic Parameters in Lumped Models for Upgrading Heavy Oils

et al. 2021

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Study on molecular structure and association behaviour of heavy subfractions of vacuum residue by an improved separation method

Tian

Han²,

et al. 2022

Can J Chem Eng

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Vacuum residue (VR) is the most complex component of crude oil. Due to the special structure of heavy subfractions, physical aggregation and chemical coking reactions easily occur through molecular force, which affects the normal processing. Therefore, in‐depth study and analysis of their composition, structure and association behaviours are particularly important. In view of the shortcomings of the traditional separation method in terms of separation accuracy, mainly including the purification of asphaltenes and the poor separation of resins. In this paper, a reasonably improved separation method is adopted, and the multi‐stage asphaltene extraction and the multi‐stage silica gel coupling separation are carried out innovatively, which achieves a high yield of 99% while ensuring the separation accuracy. The samples were characterized by elemental analysis (EA), gel permeation chromatography (GPC), Fourier‐transform infrared spectroscopy (FT‐IR), hydrogen nuclear magnetic resonance spectroscopy (1H‐NMR), X‐ray photoelectron spectroscopy (XPS), X‐ray diffraction (XRD), and scanning electron microscope (SEM) to study their structural characteristics and association behaviours. The results show that the main forms of heteroatoms in asphaltene and resin surface are C‐O‐C, C‐OH, pyridine, pyrrole, and thiophene, and the content of these substances is higher in asphaltene. Compared with resins, asphaltenes contain a more peri‐condensed aromatic structure and shorter alkyl substituent side chains. By studying the hydrogen bond and acid–base interaction, it is found that asphaltene and resin mainly contain OH‐OH, OH‐π, and OH‐ether O, of which the content of OH‐OH is the highest. Asphaltene and resin have more neutral and basic substances. These hydrogen bonds and acid–base interactions caused by heteroatoms are the main forces for the association of the heavy subfractions of the VR.

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Effect of hydrotreatment process on the physicochemical properties of a Colombian heavy crude oil post-catalytic aquathermolysis

Mateus-Rubiano,

Castillo,

León

et al. 2024

Energy

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Kinetic modeling of deep vacuum residue hydroconversion in a pilot scale continuous slurry reactor with recycle

Cited by 5 publications

References 52 publications

A Review of Thermal Cracking, Hydrocracking, and Slurry Phase Hydroconversion Kinetic Parameters in Lumped Models for Upgrading Heavy Oils

A Review of Thermal Cracking, Hydrocracking, and Slurry Phase Hydroconversion Kinetic Parameters in Lumped Models for Upgrading Heavy Oils

Study on molecular structure and association behaviour of heavy subfractions of vacuum residue by an improved separation method

Effect of hydrotreatment process on the physicochemical properties of a Colombian heavy crude oil post-catalytic aquathermolysis

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