Conradson Carbon Residue Conversion during Hydrocracking of Athabasca Bitumen: Catalyst Mechanism and Deactivation

Sanford, Emerson C.

doi:10.1021/ef00051a021

Cited by 31 publications

(37 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two classes of molecules in residuum could be classified CCR residuum and non-CCR residuum or asphaltenes residuum and nonasphaitenes residuum. This result asrees with Sanford's reports (282).…”

Section: Conversionsupporting

confidence: 79%

The extraction of bitumen from western oil sands: Volume 2. Final report

Oblad¹,

Dahlstrom²,

Deo³

et al. 1997

View full text Add to dashboard Cite

Section: Conversionsupporting

confidence: 79%

The extraction of bitumen from western oil sands: Volume 2. Final report

Oblad¹,

Dahlstrom²,

Deo³

et al. 1997

View full text Add to dashboard Cite

“…The solid powder hydrocracking catalysts lose their activity and selectivity more quickly during operation when heavy oil feeds are used, undergoing different and severe types of deactivation such as coking and metal deposition [7,8]. The mechanisms for hydrocracking reactions have been discussed in detail elsewhere [9][10][11]. Hydrogenation/dehydrogenation and hydrocracking are known to be the main reactions; the former takes place on the metal sites of the NiMo or CoMo catalysts that are dispersed inside pore structures.…”

Section: Introductionmentioning

confidence: 99%

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Kim

Nguyen‐Huy

Shin

2014

Reac Kinet Mech Cat

View full text Add to dashboard Cite

We prepared a macro-mesoporous NiMo/alumina catalyst by the introduction of macroporosity to an alumina support, and tested its catalytic performance in the hydrocracking of vacuum residue for the first time. In this reaction, the use of the macro-mesoporous NiMo/alumina catalyst clearly led to a more desirable product distribution-a higher liquid yield and lower gas yield-than a mesoporous NiMo/alumina catalyst. This indicates that the macro-mesoporous catalyst structure facilitated hydrogenation relative to the mesoporous catalyst; for the latter, hydrocracking was relatively dominant. N 2 adsorption/desorption experiments confirmed that NiMo impregnation reduced the pore size and volume, as well as the surface area, implying that the NiMo phases were located inside the mesopores and macropores. Macroporosity in the alumina support played an important role in improving the accessibility of vacuum residue to the NiMo active sites located inside pores, which are responsible for hydrogenation. By promoting hydrogenation, the macro-mesoporous NiMo/alumina catalyst increased the liquid yield of the hydrocracking of vacuum residue.Electronic supplementary material The online version of this article (

show abstract

“…The reduction of conradson carbon residue minimizes the amount of petroleum coke produced in a refinery. Similar studies have shown that the amount of coke formed in the coking step is a function of the amount of CCR in the hydrocracked product …”

Section: Integrated Design Of Vrds Processes and Hydrogen Networkmentioning

confidence: 53%

“…The relationship between MCR/CCR and different parameters has been studied. Sanford and Gray et al reported a linear correlation between MCR content of the residue fractions and the aromatic carbon content. Trasobares et al obtained a similar relationship between CCR and aromatic carbon content at 415 °C.…”

Section: Integrated Design Of Vrds Processes and Hydrogen Networkmentioning

confidence: 99%

See 1 more Smart Citation

Development of Vacuum Residue Hydrodesulphurization–Hydrocracking Models and Their Integration with Refinery Hydrogen Networks

Umana

Zhang

Smith

2016

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In recent years, there has been an increase in vacuum residue hydroprocessing due to the decrease in fuel oil demand and an increase in distillate demand. This work characterizes vacuum residue hydrodesulphurization and hydrocracking processes and their integration with hydrogen networks to evaluate holistic interactions between hydrogen consumers and the hydrogen distribution system. Conversion models for sulfur, conradson carbon residue, asphaltenes, and vacuum residue have been developed based on the feed quality, catalyst properties, and process operating conditions. A five-lump yield model is derived incorporating a feedstock characteristic index and true boiling points. The results of the proposed model show reasonable accuracy with experimental data [Yang et al. J. Fuel Chem. Technol. (Beijing, China) 1998, 5]. A simultaneous optimization of hydrogen consumer models and the hydrogen network model is executed using the CONOPT solver in the General Algebraic Modeling System environment. Sensitivity analysis is carried out on the integrated framework to demonstrate the influence of varying operating conditions on product yields. As expected, the outcomes validate attainable trends in the industry.

show abstract

Conradson Carbon Residue Conversion during Hydrocracking of Athabasca Bitumen: Catalyst Mechanism and Deactivation

Cited by 31 publications

References 0 publications

The extraction of bitumen from western oil sands: Volume 2. Final report

The extraction of bitumen from western oil sands: Volume 2. Final report

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Development of Vacuum Residue Hydrodesulphurization–Hydrocracking Models and Their Integration with Refinery Hydrogen Networks

Contact Info

Product

Resources

About