Comparison of the effects of dispersed noble metal (Pd) biomass supported catalysts with typical hydrogenation (Pd/C, Pd/Al2O3) and hydrotreatment catalysts (CoMo/Al2O3) for in-situ heavy oil upgrading with Toe-to-Heel Air Injection (THAI)

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@article{cf21261124044747a6eaeafb8554d18f,
title = "Comparison of the effects of dispersed noble metal (Pd) biomass supported catalysts with typical hydrogenation (Pd/C, Pd/Al2O3) and hydrotreatment catalysts (CoMo/Al2O3) for in-situ heavy oil upgrading with Toe-to-Heel Air Injection (THAI)",
abstract = "Catalyst deactivation due to coke and metals deposition as a result of cracking presents a challenge in heavy oil recovery and upgrading. This is particularly pronounced for in situ upgrading techniques, in which pelleted catalyst is packed around the perimeter of the horizontal producer well of the Toe-to-Heel Air Injection (THAI) process. The fixed bed of catalyst is virtually impossible to regenerate in place, promoting investigation of alternative contacting via the dispersion of nanoparticles. The catalysts studied were finely crushed micro-particulates with average size of 2.6 µm and also a catalyst prepared upon a bacterial support. The latter has advantages in terms of ease of preparation of catalysts from recycled metal sources. Heavy oil of API gravity 13.8º and viscosity 1091mPa.s was used as feed and upgrading was performed in a batch reactor at 425 ºC, with a catalyst-to-oil ratio of 0.02 (g/g), and at an initial pressure of 20 bar. The activity of the Pd/biomass catalyst was evaluated against a number of other catalysts: Pd/Al2O3, Pd/C, Al2O3 and Co-Mo/Al2O3. By using the Pd/biomass catalyst, the produced oil gravity increased by 7.8  ºAPI, and its viscosity was reduced to 7 mPa.s. This effect corresponded to an increase in the amount of low-boiling distillate (IBP-200 ºC) from 34.6 vol.% (original feedstock) to 53-62 vol.%, potentially reducing the amount of diluent needed for pipeline transport of bitumen. The coke yields were (wt%): 13.65 (Al2O3), 9.55 (Pd/Al2O3), 6.85 (Pd/C) and 3.87 (Pd/biomass). The Pd/biomass catalyst showed significantly reduced coke yield compared to thermal cracking and upgrading using Pd/C and Pd/Al2O3 catalysts, which could greatly enhance catalyst survivability in the field. ",
keywords = "Nanoparticles, Bio-Pd, Upgrading, Heavy oil, THAI",
author = "Abarasi Hart and Jacob Omajali and Angela Murray and Lynne Macaskie and Malcolm Greaves and Joseph Wood",
year = "2016",
month = sep,
day = "15",
doi = "10.1016/j.fuel.2016.04.064",
language = "English",
volume = "180",
pages = "367--376",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier Korea",

}

RIS

TY - JOUR

T1 - Comparison of the effects of dispersed noble metal (Pd) biomass supported catalysts with typical hydrogenation (Pd/C, Pd/Al2O3) and hydrotreatment catalysts (CoMo/Al2O3) for in-situ heavy oil upgrading with Toe-to-Heel Air Injection (THAI)

AU - Hart, Abarasi

AU - Omajali, Jacob

AU - Murray, Angela

AU - Macaskie, Lynne

AU - Greaves, Malcolm

AU - Wood, Joseph

PY - 2016/9/15

Y1 - 2016/9/15

N2 - Catalyst deactivation due to coke and metals deposition as a result of cracking presents a challenge in heavy oil recovery and upgrading. This is particularly pronounced for in situ upgrading techniques, in which pelleted catalyst is packed around the perimeter of the horizontal producer well of the Toe-to-Heel Air Injection (THAI) process. The fixed bed of catalyst is virtually impossible to regenerate in place, promoting investigation of alternative contacting via the dispersion of nanoparticles. The catalysts studied were finely crushed micro-particulates with average size of 2.6 µm and also a catalyst prepared upon a bacterial support. The latter has advantages in terms of ease of preparation of catalysts from recycled metal sources. Heavy oil of API gravity 13.8º and viscosity 1091mPa.s was used as feed and upgrading was performed in a batch reactor at 425 ºC, with a catalyst-to-oil ratio of 0.02 (g/g), and at an initial pressure of 20 bar. The activity of the Pd/biomass catalyst was evaluated against a number of other catalysts: Pd/Al2O3, Pd/C, Al2O3 and Co-Mo/Al2O3. By using the Pd/biomass catalyst, the produced oil gravity increased by 7.8  ºAPI, and its viscosity was reduced to 7 mPa.s. This effect corresponded to an increase in the amount of low-boiling distillate (IBP-200 ºC) from 34.6 vol.% (original feedstock) to 53-62 vol.%, potentially reducing the amount of diluent needed for pipeline transport of bitumen. The coke yields were (wt%): 13.65 (Al2O3), 9.55 (Pd/Al2O3), 6.85 (Pd/C) and 3.87 (Pd/biomass). The Pd/biomass catalyst showed significantly reduced coke yield compared to thermal cracking and upgrading using Pd/C and Pd/Al2O3 catalysts, which could greatly enhance catalyst survivability in the field.

AB - Catalyst deactivation due to coke and metals deposition as a result of cracking presents a challenge in heavy oil recovery and upgrading. This is particularly pronounced for in situ upgrading techniques, in which pelleted catalyst is packed around the perimeter of the horizontal producer well of the Toe-to-Heel Air Injection (THAI) process. The fixed bed of catalyst is virtually impossible to regenerate in place, promoting investigation of alternative contacting via the dispersion of nanoparticles. The catalysts studied were finely crushed micro-particulates with average size of 2.6 µm and also a catalyst prepared upon a bacterial support. The latter has advantages in terms of ease of preparation of catalysts from recycled metal sources. Heavy oil of API gravity 13.8º and viscosity 1091mPa.s was used as feed and upgrading was performed in a batch reactor at 425 ºC, with a catalyst-to-oil ratio of 0.02 (g/g), and at an initial pressure of 20 bar. The activity of the Pd/biomass catalyst was evaluated against a number of other catalysts: Pd/Al2O3, Pd/C, Al2O3 and Co-Mo/Al2O3. By using the Pd/biomass catalyst, the produced oil gravity increased by 7.8  ºAPI, and its viscosity was reduced to 7 mPa.s. This effect corresponded to an increase in the amount of low-boiling distillate (IBP-200 ºC) from 34.6 vol.% (original feedstock) to 53-62 vol.%, potentially reducing the amount of diluent needed for pipeline transport of bitumen. The coke yields were (wt%): 13.65 (Al2O3), 9.55 (Pd/Al2O3), 6.85 (Pd/C) and 3.87 (Pd/biomass). The Pd/biomass catalyst showed significantly reduced coke yield compared to thermal cracking and upgrading using Pd/C and Pd/Al2O3 catalysts, which could greatly enhance catalyst survivability in the field.

KW - Nanoparticles

KW - Bio-Pd

KW - Upgrading

KW - Heavy oil

KW - THAI

U2 - 10.1016/j.fuel.2016.04.064

DO - 10.1016/j.fuel.2016.04.064

M3 - Article

VL - 180

SP - 367

EP - 376

JO - Fuel

JF - Fuel

SN - 0016-2361

ER -