Physical and rheological properties of deasphalted oil produced from solvent deasphalting

Shin, Sangcheol; Lee, Jung Moo; Hwang, Ji Won; Jung, Hyun Wook; Nho, Nam Sun; Lee, Ki Bong

doi:10.1016/j.cej.2014.07.037

Cited by 29 publications

(24 citation statements)

References 35 publications

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“…Due to these reasons, asphaltenes have been viewed as detrimental fractions in petroleum fuels [12]. Deasphalting (i.e., removing asphaltenes) is a suitable technique to upgrade petroleum heavy ends as the deasphalted oil (DAO) or maltenes are richer in paraffins and can be used as base oil for lubricants [13]. Deasphalting prevents coke formation and metal buildup (Ni, V) in catalysts when the DAO is used as a feed in fluid catalytic cracking (FCC) or other subsequent refinery processes [14].…”

Section: Introductionmentioning

confidence: 99%

“…FT-ICR mass spectrometry has been used to analyze a number of other samples like base oils [31], HFO [32], fuel oil derived DAO [33], vacuum residue derived DAO [34], vacuum residues [35], furnace oil [36], coal liquefaction products [37], lubricants [38], biomass [39,40] besides crude oils [25,26,[41][42][43] and asphaltenes [12,[44][45][46]. High resolution 1 H and 13 C NMR spectroscopy can also reveal rich qualitative and quantitative information about the molecular distribution of heavy fuels [47]. NMR spectra are represented in terms of chemical shifts which indicate the molecular structure.…”

Section: Introductionmentioning

confidence: 99%

“…Functional groups that are similar in structure produce distinct signals, which aid their identification and quantification. For example, 1 H nuclei in paraffinic CH3 groups usually appear between 0.25 -0.94 ppm in the 1 H NMR spectra, whereas the peaks corresponding to the 13 C nuclei appear between 3 -18.5 ppm in the 13 C NMR spectra. The relative quantity of each nuclei type in the mixture can be calculated by the integral intensity of the particular peaks divided by the sum of integral intensities of all peaks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of deasphalted heavy fuel oil using APPI (+) FT-ICR mass spectrometry and NMR spectroscopy

Jameel

Khateeb

Elbaz

et al. 2019

Fuel

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of deasphalted heavy fuel oil using APPI (+) FT-ICR mass spectrometry and NMR spectroscopy

Jameel

Khateeb

Elbaz

et al. 2019

Fuel

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“…Компонентный состав сырья представлен нефтяными фракциями с температурами кипения от 405 до 616 о С. График ИТК разгонки гудрона приведен на рисунке 1, значение средней молярной массы составляет 409.5 кг/кмоль [7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: методыunclassified

Reducing energy costs during solvent regeneration at the tar deasphalting unit

Myasoedov

Попов

Khabibrakhmanov

2021

Vestn. Voronež. gos. univ. inž. tehnol.

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For propane tar deasphalting units, a rather high energy intensity of the technological process is characteristic. In order to reduce it, an assessment was made of the possibility of reducing the steam consumption during the regeneration of propane from asphalt solution. The study was carried out using a Honeywell UniSim Design modeling system, in which a model of a propane tar deasphalting unit was formed. The Peng-Robinson method was used as a mathematical package for calculating the thermodynamic properties of the components of the fractions. The component composition of the feedstock is represented by oil fractions with boiling points from 405 to 616 °C. When carrying out a computational experiment, the following values of technological parameters were used: the tar consumption was 38.9 t / h, the ratio (propane: raw material) was (6.4: 1), the yield of deasphalted oil was about 30 wt%. The performed analysis of a typical scheme for the regeneration of propane from asphalt solution showed that in the process stream supplied to the feed of the stripping column K-6, there is already a sufficiently large amount of a vapor phase consisting practically of propane and traces of oil fractions. To efficiently use the energy of the flow without attracting additional energy costs, it is advisable to separate the gas and liquid phases before they enter the column K-6, that is, to include an additional separator in the technological scheme before it. The performed computational experiment showed that in the proposed version of the technological scheme, the steam consumption required for the release of propane decreases by 17.5%, which, accordingly, for the subsequent devices of the scheme, reduces the amount of water discharged into the sewage system. Optimization of technological modes of the stripping column K-6 provides a clear separation of propane, in the flow of which the content of bitumen fractions is 0.03 mol%, which makes it possible in industrial conditions to return the flow of propane to the feed of the extraction column. The proposed technological solution for propane recovery can be used in the processes of one- and two-stage tar deasphalting.

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“…Therefore, the production of VR will increase significantly as more unconventional oil is treated in oil refineries [5,6]. However, the use of VR is limited because of problems such as its low economic value, high viscosity and density, and high contents of nitrogen, sulfur, and heavy metals [7,8].…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue

Shin

Nho

et al. 2016

J Therm Anal Calorim

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Pyrolysis is a relatively simple upgrading process that can produce light oil from unconventional oil and heavy residue. For effective utilization of pyrolysis processes, it is important to understand its kinetic parameters. In this study, the nonisothermal pyrolysis of vacuum residue (VR) was analyzed using a thermogravimetric analyzer and the activation energy of the VR pyrolysis reaction was estimated by several theoretical methods. It was found that isoconversional methods were more suitable than nonisoconversional methods for analyzing complex pyrolysis reaction of VR. The Friedman method, a differential isoconversional method, is thought to be the most appropriate among the various methods tested because it can describe the complexity of the pyrolysis reaction of VR and there is no need for information of exact reaction model and mathematical assumptions for temperature integral, which can raise systematic errors in the kinetic analysis. Finally, the kinetic parameters of VR pyrolysis were determined based on the results of Friedman analysis and distributed activation energy model (DAEM), and VR pyrolysis behavior was well expressed with the kinetic parameters obtained from DAEM analysis.

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Physical and rheological properties of deasphalted oil produced from solvent deasphalting

Cited by 29 publications

References 35 publications

Characterization of deasphalted heavy fuel oil using APPI (+) FT-ICR mass spectrometry and NMR spectroscopy

Characterization of deasphalted heavy fuel oil using APPI (+) FT-ICR mass spectrometry and NMR spectroscopy

Reducing energy costs during solvent regeneration at the tar deasphalting unit

Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue

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