Vacuum Distillation of Petroleum Residues

Kraft, Wheaton W.

doi:10.1021/ie50461a010

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…The high temperatures currently used for AR and VR processing and the presence of acid compounds (naphthenic acids, sulfur compounds, etc.) in these residues may cause corrosion of the pipelines. ,, Among the acid compounds, naphthenic acids are the main cause of pipeline corrosion in the process of crude oil refining with a range of temperatures between 220 and 400 °C. − Some studies have shown that crude oil with acidity higher than 0.5 mg g −1 of KOH can already be considered potentially corrosive to the refinery pipelines. , …”

Section: Introductionmentioning

confidence: 99%

Total Acid Number Determination in Residues of Crude Oil Distillation Using ATR-FTIR and Variable Selection by Chemometric Methods

et al. 2010

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The total acid number (TAN) was determined in the atmospheric residue (AR) and vacuum residue (VR) of the petroleum distillation process using mid-infrared spectroscopy with attenuated total reflection in association with chemometric methods. Calibration and prediction sets consisted of 44 and 13 samples, respectively (16 AR samples and 41 VR samples). Calibration models were developed using three variableselection models: interval partial least squares (iPLS), synergy interval partial least squares (siPLS), and backward interval partial least squares (biPLS). Different treatments and preprocessing steps were also evaluated for development of the models. The treatment based on the first derivative with a SavitzkyGolay filter and the mean centered was selected for model construction. A root-mean-square error of prediction of 0.164 mg g -1 of KOH was achieved using the biPLS algorithm with spectra divided into 20 intervals and combinations of

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Section: Introductionmentioning

confidence: 99%

Total Acid Number Determination in Residues of Crude Oil Distillation Using ATR-FTIR and Variable Selection by Chemometric Methods

et al. 2010

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“…The significance of distillation terms is considered by Larian (25). Changes in definitions are proposed.…”

Section: Discussionmentioning

confidence: 99%

High Temperature Distillation

Walsh¹

1949

Ind. Eng. Chem.

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“…Commercial Practice. Continuous distillation is the first and primary process practiced in the refining of crude petroleum (Kraft, 1948). Initially this is done under atmospheric pressure, which normally removes distillable overhead fractions to ca.…”

Section: Separation By Distillationmentioning

confidence: 99%

Differences in Distillation and Solvent Separated Asphalt Residua

Corbett¹,

Petrossi²

1978

Ind. Eng. Chem. Prod. Res. Dev.

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Compositional analysis serves to show the effect of process separations on petroleum residua as well as its dependence on the type of crude being used. Consistency of the asphalt residua first depends upon the separation cut-point and the crude type used. Distillation controls this by slicing off the lowest boiling fractions while concentrating the highest boiling fractions in the residuum. Solvent separations using propane to heptane cut deeper into the residua, preferentially removing the most saturated hydrocarbons first and then those of low molecular weight. This concentrates the most aromatic and highest molecular weight components in the raffinate or precipitated fraction. Propane precipitates a mixture of asphaltenes, polar-aromatics and naphthene-aromatics, pentane a mixture of asphaltenes and polar-aromatic, while heptane yields only asphaltenes by definition. Whereas propane has been used for many years in separating residua, the asphalt technologist might find the pentane precipitate to be more useful as a blending component for paving asphalt.

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Vacuum Distillation of Petroleum Residues

Cited by 6 publications

References 5 publications

Total Acid Number Determination in Residues of Crude Oil Distillation Using ATR-FTIR and Variable Selection by Chemometric Methods

Total Acid Number Determination in Residues of Crude Oil Distillation Using ATR-FTIR and Variable Selection by Chemometric Methods

High Temperature Distillation

Differences in Distillation and Solvent Separated Asphalt Residua

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