Physicochemical Characteristics of the Crude ‘Disulfide Oil’ Substitutes

Dysangaliev, K.I.; Saginaev, A. T.; Kylbaturov, D.K.; Borisov, Yu. А.; Каримов, О Х

doi:10.17122/ogbus-2016-5-125-139

Cited by 3 publications

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“…Sokolsky et al also investigated the structural and chemical characteristics of this byproduct [16]. Dysangaliev et al reported density, boiling point, refractive index, sulfur content, solubility in different solvents, and geometrical structure of DSO produced in Tengiz Gas Refinery [17]. Taheri et al focused on biological elimination of DSO from soil using several bacterial strains [6].…”

Section: Introductionmentioning

confidence: 99%

Density, viscosity, surface tension, and excess properties of DSO and gas condensate mixtures

et al. 2017

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Disulfide oil (DSO) mostly burned or stored is known as a low-grade byproduct in gas refining industries. This material is highly perilous to environment. A common way to reduce the environmental impact of DSO is blending in a specific ratio with gas condensate stream in gas refinery. This would improve DSO quality and consequently strengthen its unique application. In this work, density, viscosity and surface tension of DSO and gas condensate mixtures were measured and modeled. Viscosity and density of DSO, gas condensate, and their mixtures were measured in temperature range of 283.15-318.15 K. In addition, surface tension was measured at 298.15 K at different volumetric fractions of DSO-gas condensate mixture. Excess molar volume (V E ), viscosity deviation (Dl), deviation of excess Gibbs free energy (DG E ), and excess surface tension (r E ) were determined based on measured properties. Results showed a positive and negative trend for excess molar volume and excess surface tension, respectively. While fluctuation was observed in viscosity deviation and deviation of excess Gibbs free energy and results showed positive and negative values in different mole fraction. In addition, RedlichKister equation is proposed to predict excess properties of DSO and gas condensate mixtures.Keywords DSO Á Gas condensate Á Excess property Á Viscosity Á Gibbs free energy Á Surface tension

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Section: Introductionmentioning

confidence: 99%

Density, viscosity, surface tension, and excess properties of DSO and gas condensate mixtures

et al. 2017

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Study of Corrosion in Activated Oxygen-Assisted Disulfide Oil Oxide

Mehraban

Azin

Osfouri

2022

J. of Materi Eng and Perform

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Experimental substantiation of the tentatively safe level of diethyl disulfide in the air of the working area and the atmospheric air of populated areas

et al. 2022

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Introduction. Diethyl disulfide belongs to the group of dialkyl disulfides, is a part of disulfide oil and a mixture of dialkyl disulfides. As a result of industrial purification of hydrocarbon raw materials from mercaptans, tens of thousands of tons of dialkyldisulfides and their mixtures are accumulated annually, the toxicity and danger of which have not been fully studied. No hygiene standards have been developed for diethyl disulfide. Materials and methods. Studies of the effects of diethyl disulfide were carried out in non-linear animals (rats and mice). The toxic properties of diethyl disulfide were studied under the conditions of single and repeated exposure to the intragastric, intraperitoneal, inhalation and cutaneous routes of entry into the body. Results. Based on the studies carried out, the toxicometric parameters of diethyl disulfide were established. Average lethal dose with intragastric administration LD50 = 1575 mg/kg, average lethal concentration CL50 = 18700 mg/m3, coefficient of possible inhalation poisoning CPIP = 1.3, limit of acute inhalation action (Limac) is set at 120 mg/m3, acute zone Zac = 156, cumulation coefficient was 3.2. Diethyl disulfide does not have a skin-resorptive toxic effect, but it has a moderately pronounced irritating effect on the mucous membrane of the eyes. Limitations of the study. The results of the diethyl disulfide exposure assessment are given for two animal species and four main routes of entry. Conclusion. The data obtained indicate that diethyl disulfide is a moderately hazardous substance with a single intragastric, inhalation and cutaneous route of entry into the body. The cumulative properties of diethyl disulfide are moderately expressed. Based on the analysis of literature data, the results of experimental studies and mathematical forecasting, a value of 4.0 mg/m3 is recommended as an approximate safe level of exposure in the air of the working area, in the atmospheric air of urban and rural settlements - 0.04 mg/m3.

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Physicochemical Characteristics of the Crude ‘Disulfide Oil’ Substitutes

Cited by 3 publications

References 1 publication

Density, viscosity, surface tension, and excess properties of DSO and gas condensate mixtures

Density, viscosity, surface tension, and excess properties of DSO and gas condensate mixtures

Study of Corrosion in Activated Oxygen-Assisted Disulfide Oil Oxide

Experimental substantiation of the tentatively safe level of diethyl disulfide in the air of the working area and the atmospheric air of populated areas

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