Determination of aromatic hydrocarbons in petroleum fractions by gas-liquid chromatography

Sidorov, R. I.; Denisenko, Anna; Polyakova, L. A.

doi:10.1007/bf00725981

Cited by 3 publications

(2 citation statements)

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“…Arenes generally exist in coals [1][2][3] and their derivatives, [4][5][6] petroleum, [7][8][9][10] crop stalks 11,12 and even liquid fuels, such as gasoline 13,14 and diesel. 15,16 Some of them can be released into the air during incomplete combustion to form aerosols 17 and even haze.…”

Section: Introductionmentioning

confidence: 99%

Application of supported metallic catalysts in catalytic hydrogenation of arenes

Wei

Zong

et al. 2013

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Application of supported metallic catalysts in catalytic hydrogenation of arenes

Wei

Zong

et al. 2013

RSC Adv.

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“…As a next step an analysed mixture is divided into separate components and all of them are leave a column separately and registered at the output. As a result it can be concluded that with the help of these methods it is possible to achieve high resolution of the analysis [5][6][7][8]. However, the high cost of equipment, large dimensions and complexity of the analysis process limit the industrial application of chromatographic methods in industry.…”

mentioning

confidence: 99%

Thiophene Determination in Liquid Hydrocarbons by In-line Acoustic Measurements

Mukhin

Kutia

2019

Izv. vysš. učebn. zaved. Ross., Radioèlektron.

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Introduction. Petroleum is a complex mixture of hydrocarbons. Sulphur is the most common heteroatom in pe-troleum and petroleum products. Its content in oil can reach 14 %. The determination of sulphur in oil and its removal is of great importance, since sulphur compounds adversely affect the quality of petroleum products and pollute the environment. Desulphurization of hydrocarbons is important in the processing of petroleum products, which needs in usage of accurate and simple methods for the sulphur-containing components determination. Most of developed methods are difficult to apply for flow online analysis, which can create difficulties in using them to monitor the content of sulphur-containing heteroatomic components in real time. Acoustic sensors are one of the possible solutions. In term of sensing of flammable liquids, the use of the acoustic methods is attractive since the analyte is not a part of an electrical measuring circuit and it is only acoustically coupled that prevents an occurrence of a spark.Objective. The purpose of the work is to study the possibilities of online flow analysis of sulphur-containing heteroatomic components using acoustic measurements. The challenge is the development of a resonator system integrated with the pipe.Materials and methods. Thiophene and oil fraction with the boundary boiling point of 100–140 oC were used to prepare the mixtures. Thiophene is a representative of sulphur-containing components, which may be included in the composition of petroleum and its derivatives. Experimental measuring equipment includes impedance analyzer, a developed sensor structure integrated with a liquid-filled pipe, a pump and a tank with a measured liquid. A theoretical analysis of sensor structure was carried out on the basis of numerical simulation using COMSOL Multiphysics software.Results. The sensor structure was designed as a combination of 2D and 1D pipe periodic arrangements to achieve high Q-factor of acoustic resonance in the flow system. The eigenmodes of the sensor structure with a liquid analyte were carried out. The characteristic of sensor structure is determined. The sensor shows good sensitivity to the thiophene content with high resolution in-line analysis. This result is achieved by limiting the energy losses of acoustic resonance in radiation along the pipe by creating a periodic structure.Conclusion. The study of acoustic properties of solutions prepared on the basis of thiophene and oil fraction with boundary boiling point 100–140 °C was performed. It shows that methods based on acoustic spectroscopy make it possible to accurately determine the concentration of heteroatomic components in gasoline mixtures, since the presence of heteroatomic components leads to a change in mechanical properties of liquid hydrocarbons mixtures. Possible applications for developed acoustic sensor are flow analysis for monitoring the quality of oil products.

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Sensor for the evaluation of dielectric properties of sulfur-containing heteroatomic hydrocarbon compounds in petroleum based liquids at a microfluidic scale

et al. 2020

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Desulfurization of hydrocarbons is an important step in the processing of petroleum products, which requires an accurate and robust method for the sulfur-containing component evaluation. On the other hand, sulfur-containing heteroatomic hydrocarbon additives are harmful for people and the environment. Therefore, it is advantageous to conduct laboratory tests at low volumes to reduce doses of exposure of sulfur-containing vapors to the personnel. Microfluidics is an emerging platform that provides an advantage to operate with low volumes. The microfluidic dielectric spectroscopy approach is proposed in the current contribution as a platform for determination of the concentration of polar heteroatomic components in binary mixtures. The presence of heteroatomic components in petroleum products leads to a perceptible change in the dielectric properties of the blend. This paper shows the technological aspects for the microfluidic sensor chip design. It was successfully used to determine the concentration of thiophene (as a typical sulfur-containing hydrocarbon) in gasoline. We compare the commercially available solution with the developed microfluidic sensor. We demonstrate the developed microfluidic sensor chip that has a comparable sensitivity as a macroscopic commercial measurement cell but at the microscale. It is able to operate at 103 times reduced volume of liquid analyte, providing stable control of the sulfur-containing additive concentration. The obtained results are intended to be applied for lab monitoring of sulfur-containing components in petroleum products.

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Determination of aromatic hydrocarbons in petroleum fractions by gas-liquid chromatography

Cited by 3 publications

References 1 publication

Application of supported metallic catalysts in catalytic hydrogenation of arenes

Application of supported metallic catalysts in catalytic hydrogenation of arenes

Thiophene Determination in Liquid Hydrocarbons by In-line Acoustic Measurements

Sensor for the evaluation of dielectric properties of sulfur-containing heteroatomic hydrocarbon compounds in petroleum based liquids at a microfluidic scale

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