Application of GC–MS chromatography for the analysis of the oil fractions extracted by supercritical CO2 at high pressure

Rudyk, Svetlana Nikolayevna; Spirov, Pavel; Søgaard, Erik Gydesen

doi:10.1016/j.fuel.2012.12.004

Cited by 23 publications

(16 citation statements)

References 13 publications

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“…A supercritical extractor, Spe-ed SFE shown in Figure 1, was used for the experiment. 15 For each test, 42 ± 0.5 g of a heavy hydrocarbon mixture was put into an extractor (3) of 100 mL volume. Caps with holes (3) on both sides covered the extractor.…”

Section: Methodsmentioning

confidence: 99%

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Rudyk

Spirov

2013

Energy Fuels

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A heavy hydrocarbon mixture represented by C 17 −C 31 carbon groups was investigated to determine extraction recoveries by supercritical carbon dioxide in the ranges of 12−65 MPa for pressure and 50−90°C for temperature. The purpose of the study was to obtain a three-dimensional scheme of the SC−CO 2 /heavy hydrocarbon mixture system in pressure− temperature−recovery coordinates, which allows the prediction and numerical modeling of phase behavior. At lower temperatures, high recoveries were attained at lower pressures. The highest recovery of 93% was obtained at 70°C and 56 MPa. The recoveries greater than 65% were determined at the breakover points where the pressure increased by 7 MPa with a temperature increase of 10°C. The phase envelope, 3D scheme, and the equations describing the boundaries of the system are presented.

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Section: Methodsmentioning

confidence: 99%

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Rudyk

Spirov

2013

Energy Fuels

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“…The layout of equipment, selection of interaction time, use of towel as a carrier for crude oil, and other experimental details were followed as reported previously. − The experiments were conducted using the Spe-ed supercritical fluid extractor. The samples were prepared from the 5 g towels, each saturated with 40 g of crude oil.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…The current study describes SC-CO 2 extraction of Gorm crude oil in a range of different pressures and temperatures. An unusually high level of oil vaporization has been observed at higher temperatures of 60 and 70 °C and higher pressures of 50 and 60 MPa compared to 30 and 40 MPa that has not previously been observed in the experiments with crude oil from Dan and Halfdan fields. − The Gorm crude oil was also investigated using gas chromatography–mass spectrometry (GC-MS), NMR spectroscopy, and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) spectroscopy.…”

Section: Introductionmentioning

confidence: 92%

Vaporization of Crude Oil by Supercritical CO₂ at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

et al. 2017

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The effect of temperature on supercritical carbon dioxide (SC-CO 2 ) extraction of crude oil from the Gorm oil field of the North Sea was investigated at temperatures of 40−70 °C and pressures of 20−60 MPa. MALDI-TOF, GC-MS, and NMR analyses were conducted in order to characterize the oil. Generally, the total recovery and vapor recovery increased, while the liquid recovery decreased, when the temperature was increased from 40 to 70 °C. At lower temperatures (40 and 50 °C), the liquid recovery increased from a minimum of 10% at 30 MPa to a maximum of 60% at 60 MPa, whereas the vapor recovery was 16% on average over the entire pressure range. In contrast, at higher temperatures (60 and 70 °C), the liquid recovery was 20% on average at all pressures, while the vapor recovery increased from 20% at 30 MPa to 58% at 60 MPa on average. This sharp increase of vapor recovery at higher pressures signified retrograde vaporization. This observed phenomenon suggested that the extraction of some types of oil from high-pressure reservoirs could be achieved by vaporization using SC-CO 2 .

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“…In the study of the extraction of remaining fat from the rendered fish meal, the extraction curves were linear with a slope close to the solubility value of the oil in CO 2 , which shows that the extraction rate has a close relationship with the solubility (Bucio et al, ). However, owing to the extremely low dielectric constant and polarizability of CO 2 , compounds with high molecular mass or hydrophilic molecules, such as proteins, asphaltene, colloids, and many other polymers, are not able to dissolve well in CO 2 , which has significantly limited its applications (Cummings, Trickett, Enick, & Eastoe, ; Iezzi, Enick, & Brady, ; Moriyoshi, Kita, & Uosaki, ; Rudyk et al, ). Therefore, improving the solubility of such compounds in CO 2 would be of great importance for the development of CO 2 utilization.…”

Section: Introductionmentioning

confidence: 99%

“…Solubility of components of the crude oil in CO 2 is crucial to the recovery rate. It has been found that light alkanes (C 3-10 ) compared with heavier alkanes were recovered faster and more from the crude oil phase because of their better solubility in CO 2 (Cao & Gu, 2013;Rudyk, Spirov, & Sogaard, 2013); in addition, IFT between light alkanes and CO 2 are lower than those between the heavy alkanes and CO 2 (Mahdavi, Zebarjad, Taghikhani, & Ayatollahi, 2014a). In the extraction fields, a high extraction rate of a compound largely depends on its good solubility in CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Structural Effects of Nonionic Surfactants on Their Ability to Reduce the Dissolution Pressures of Heavy Hydrocarbons in Supercritical CO₂

Shi

Cheng

Liu³

et al. 2018

J Surfact & Detergents

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The effects of selected nonionic surfactants on dissolution pressures of the octacosane and hydrocarbon mixtures in supercritical CO2 (scCO2) were investigated at 318–343 K to study relationships between the structures of the surfactants and their ability to improve solubility. Dissolution pressures of the solutes were experimentally observed to be decreased by at most 11.10% and at least 0.44% in the presence of the surfactants. However, this solubility‐improving performance was diminished with an increase in the molecular chain length of the surfactant. Linear surfactants gave better solubility‐improving performances in the octacosane/scCO2 systems, while branched compounds were better in the hydrocarbon mixture/scCO2 systems, which are attributed to the similarity of the chain length between the surfactant and the solute. X‐ray computed tomography tests provided evidence for direct material exchange between the hydrocarbon mixture and scCO2.

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Application of GC–MS chromatography for the analysis of the oil fractions extracted by supercritical CO2 at high pressure

Cited by 23 publications

References 13 publications

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Vaporization of Crude Oil by Supercritical CO₂ at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Structural Effects of Nonionic Surfactants on Their Ability to Reduce the Dissolution Pressures of Heavy Hydrocarbons in Supercritical CO₂

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Application of GC–MS chromatography for the analysis of the oil fractions extracted by supercritical CO2 at high pressure

Cited by 23 publications

References 13 publications

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Three-Dimensional Scheme of Supercritical Carbon Dioxide Extraction of Heavy Hydrocarbon Mixture in (Pressure; Temperature; Recovery) Coordinates

Vaporization of Crude Oil by Supercritical CO2 at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Structural Effects of Nonionic Surfactants on Their Ability to Reduce the Dissolution Pressures of Heavy Hydrocarbons in Supercritical CO2

Contact Info

Product

Resources

About

Vaporization of Crude Oil by Supercritical CO₂ at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Structural Effects of Nonionic Surfactants on Their Ability to Reduce the Dissolution Pressures of Heavy Hydrocarbons in Supercritical CO₂