Kinetic and reaction pathway of upgrading asphaltene in supercritical water

Li, Ning; Yan, Bo; Xiao, Xianming

doi:10.1016/j.ces.2015.05.017

Cited by 29 publications

(24 citation statements)

References 40 publications

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“…Assuming that the reactions follow the first-order kinetics [15,16], the equations of reaction rates of the five lumps in Fig. 7 are shown as follows:…”

Section: The Mechanism Of Upgrading Crude Oil In Scwmentioning

confidence: 99%

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Upgrading of crude oil in supercritical water: A five-lumped kinetic model

Zhang

Ren

Wang

et al. 2017

Journal of Analytical and Applied Pyrolysis

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“…Assuming that the reactions follow the first-order kinetics [15,16], the equations of reaction rates of the five lumps in Fig. 7 are shown as follows:…”

Section: The Mechanism Of Upgrading Crude Oil In Scwmentioning

confidence: 99%

“…Hence, a need for the study of oil upgrading reactions in SCW. Studies in this research area regarding the influence of reaction factors and kinetics of upgrading of crude oil in SCW were reported in a few papers [15,16].…”

Section: Introductionmentioning

confidence: 98%

Upgrading of crude oil in supercritical water: A five-lumped kinetic model

Zhang

Ren

Wang

et al. 2017

Journal of Analytical and Applied Pyrolysis

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“…In recent times, LR kinetics models for heavy oil upgrading in the presence of SCW have been proposed by Tan et al 3 and Liu et al 4 (schematically illustrated in Figure 6B), and Li et al 29 (schematically illustrated in Figure 6A), in order to fit the batch reactor experimental data in their respective studies. While these models are useful as empirical correlations, they miss out the important phenomenological features of the heavy oil upgrading process discussed above.…”

Section: The Tpsr Model: Formulation and Sub‐modelsmentioning

confidence: 99%

Inference of reaction kinetics for supercritical water heavy oil upgrading with a two‐phase stirred reactor model

Raghavan

Ghoniem

2021

AIChE Journal

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We present the development and application of a two‐phase stirred reactor model for heavy oil upgrading in the presence of supercritical water (SCW), with coupled phase‐specific thermolysis reaction kinetics and multicomponent hydrocarbon–water phase equilibrium. We demonstrate the inference of oil and water phase kinetics parameters for a compact lumped reaction kinetics scheme through the application of this model to two different sets of batch reactor experiments reported in the literature. We infer that, although SCW can suppress the formation of newer polynuclear aromatics (PNA) from distillate range species, it is broadly ineffective in deterring the combination of pre‐existing PNA fragments in the oil feed. Quantification of the conversion to distillate liquids before the onset of coke formation helps arrive at a clear conclusion on whether the use of SCW in the batch reactor leads to better product outcomes for different oil feeds and operating conditions.

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“…Since the constants of LHHW in Equations 1and 2ascertained by basic research are scarcely found, general kinetic reactions are applied to describe the reaction network of petroleum based on the Arrhenius equation. And researchers have different opinions about the order of the reactions [27,28]. In this paper, it is presumed that the whole reaction pathway consists of first-order reactions.…”

Section: Kinetic Model Of the Asphaltene Hydrogenation Processmentioning

confidence: 99%

“…where i y and j y indicate the mass concentrations of lump i and j , respectively; l k is the rate constant of the th l reaction for lump i and j , Thus, based on the reaction network of asphaltene conversion, the mathematical equations of the kinetic model can be rewritten in the following forms: Since the constants of LHHW in Equations 1and 2ascertained by basic research are scarcely found, general kinetic reactions are applied to describe the reaction network of petroleum based on the Arrhenius equation. And researchers have different opinions about the order of the reactions [27,28]. In this paper, it is presumed that the whole reaction pathway consists of first-order reactions.…”

Section: Kinetic Model Of the Asphaltene Hydrogenation Processmentioning

confidence: 99%

Modeling and Simulation of Reaction and Fractionation Systems for the Industrial Residue Hydrotreating Process

et al. 2019

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The residue hydrotreating process plays a significant role in the petroleum refining industry. In this process, modeling and simulation have critical importance for process development, control, and optimization. However, there is a lack of relevant reports of plant scale due to complexity in characterizing feedstock and determining reaction mechanisms. In this paper, reaction and fractionation models are constructed and simulated for a real-life industrial residue hydrotreating process based on Aspen HYSYS/Refining. Considering the heavier and inferior residue, analytical characterization is carried out for feedstock characterization based on laboratory analysis data. Moreover, two reactor models with parallel structures are proposed to implement the intricate reaction network, namely, a hydrocracker reactor and a plug flow reactor. The former simulates lighter petroleum hydrotreating based on the built-in reaction network. The latter emulates the conversion of a peculiar, heavier resin and asphaltene, using a six-lump model, which expands the scope of the feedstock and improves the accuracy of the model. To obtain a realistic simulation of fractionation, the database-based delumping method is adopted to model it with proper pseudo-components. The simulation results, including temperature rise, hydrogen consumption, temperature distribution, product yield, product properties, indicate that the model is capable of reflecting the realistic process accurately.

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Kinetic and reaction pathway of upgrading asphaltene in supercritical water

Cited by 29 publications

References 40 publications

Upgrading of crude oil in supercritical water: A five-lumped kinetic model

Upgrading of crude oil in supercritical water: A five-lumped kinetic model

Inference of reaction kinetics for supercritical water heavy oil upgrading with a two‐phase stirred reactor model

Modeling and Simulation of Reaction and Fractionation Systems for the Industrial Residue Hydrotreating Process

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