Thermal Hydrogenation of Crude Residua

Langer, Armin; Stewart, Joseph; Thompson, C. E.; White, H. T.; Hill, Randal M.

doi:10.1021/ie50613a025

Cited by 31 publications

(15 citation statements)

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“…In the present study the conversion of heavy gas oil to distillate and naphtha did not correlate THE CANADIAN JOURNAL OF CHEMICAL ENGINEERING, VOLUME 67, AUGUST, 1989 well with the boiling distribution of the feed oil (Tables 5 and 6). This result is in agreement with the data of Langer et al (1961) which indicate that chemical characteristics are more important than boiling range in determining reactivity for thermal hydrotreating, given the relatively small differences between the samples. Fabuss et al (1964) found that the rate of thermal decomposition of naphthenes increased with the number and size of alkyl subtituents, and with additional rings.…”

Section: Cracking Of 343-525°c Fractionsupporting

confidence: 92%

Correlation of reactivity with chemical structure: Thermal hydrogenation of gas oils

et al. 1989

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The relationship between chemical structure and reactivity for thermal hydroprocessing was studied for five gas oils derived from Alberta bitumens. Chemical structure was characterized by combining data from 1 H and 13 C nuclear magnetic resonance spectroscopy, class fractionation, and elemental analysis to calculate structural parameters. Thermal hydrotreating was performed in a continuous‐flow stirred reactor at 420 and 440°C, 13.9 MPa hydrogen pressure, and 1.5 h1 LHSV. Conversion of the 343–525°C boiling fraction of the gas oils was correlated with the concentration of naphthenic methylene groups in the feed. Formation of methane and ethane was dependent on the degree of condensation of the aromatic rings in the feed oils. Thermal desulfurization was highly correlated with the amount of saturates in the feed, and the aromaticity of the resin fraction. Hydrogen consumption increased with the aromaticity of the gas oil…

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Section: Cracking Of 343-525°c Fractionsupporting

confidence: 92%

Correlation of reactivity with chemical structure: Thermal hydrogenation of gas oils

et al. 1989

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“…The importance of the use of solvents to mitigate coke formation during the thermal decomposition of petroleum has been recognized for many years (Carlson et al, 1958;Langer et al, 1961Langer et al, , 1962Hill et al, 1968), but their effects have been correctly ascribed to hydrogen donor reactions that have an inhibiting effect on the formation of the molecular species that are prone to phase separation. The separation of the phases depends on the solvent characteristics of the liquid.…”

Section: Thermal Decompositionmentioning

confidence: 99%

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Speight¹

2004

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Les asphaltènes, composés pétroliers -Partie 2 : L'effet des asphaltènes et des résines sur les procédés de récupération et de raffinage -Le pétrole est un système complexe en équilibre délicat qui dépend des relations entre ces constituants, relations gouvernées par les interactions molécu-laires. Ainsi, des schémas de récupération et de raffinage, en particulier ceux traitant des dépôts asphalté-niques (produits de dégradation ou de réaction des asphaltènes et des résines) peuvent être proposés grâce aux connaissances acquises sur la nature des asphaltènes, des résines et de leurs interactions au sein d'un brut. Abstract

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“…The hydrogen donors may also be strongly aromatic streams, such as products from the fractionator bottoms or recycled gasoil from the catalytic cracking unit, tar pyrolysis plant, or coking plants. , …”

Section: Types Of Hydrogen Donorsmentioning

confidence: 99%

“…71,72 The hydrogen donors may also be strongly aromatic streams, such as products from the fractionator bottoms or recycled gasoil from the catalytic cracking unit, tar pyrolysis plant, or coking plants. 73,74 A process for catalytic hydroconversion of coal by a metal compound in the presence of hydrogen donor solvents has been described in patents. 75,76 Preferred metal compounds are molybdenum naphthenate as the catalyst precursor at temperatures below 350 °C.…”

Section: Types Of Hydrogen Donorsmentioning

confidence: 99%

Use of Hydrogen Donors for Partial Upgrading of Heavy Petroleum

et al. 2016

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The huge energy required to overcome the high-pressure drop in pipelines due to the high viscosity of heavy crude oils has motivated the development of technologies to improve the flow properties of these heavy hydrocarbons, such as friction reduction, viscosity reduction, and in situ upgrading. It has been reported that a series of H-donors has been used to upgrade heavy oil for their transportation (low viscosity and high API gravity). Virtually any organic compound with a low oxidation potential can serve as a useful hydrogen donor. The low oxidation potential enables the transfer of hydrogen(s) from the donor to the substrate under mild reaction conditions. The choice of donor is based on the nature of the reaction, its availability, and solubility in the reaction medium.

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Thermal Hydrogenation of Crude Residua

Cited by 31 publications

References 0 publications

Correlation of reactivity with chemical structure: Thermal hydrogenation of gas oils

Correlation of reactivity with chemical structure: Thermal hydrogenation of gas oils

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Use of Hydrogen Donors for Partial Upgrading of Heavy Petroleum

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