Chemistry and Technology of Fuels and Oils (CHEM TECH FUELS OIL+)

Publications in this journal

• Article: Inhibition of corrosion of carbon steel 1018 in acid medium with ethoxylated aliphatic alcohols

  Salih S. Al-Juaid
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  ABSTRACT: The effectiveness of inhibition of carbon steel 1018 in 1 M solution of HCl by three ethoxylated aliphatic alcohols with a different number of ethylene oxide units was investigated by measuring the weight loss of the steel and galvanostatic polarization. An increase in the effectiveness of inhibition with an increase in the concentration of the inhibitor, number of ethylene oxide units in its molecule, and decrease in the temperature was found. Inhibition of corrosion is due to adsorption of ethylene oxide groups in the inhibitors on the metal surface. Adsorption is described by a Langmuir isotherm. The effect of the temperature on the corrosion rate in the presence and absence of inhibitors was investigated. Some thermodynamic parameters of corrosion were calculated. Key wordscarbon steel 1018–ethoxylated aliphatic alcohols–corrosion inhibitors
  Chemistry and Technology of Fuels and Oils 05/2012; 47(1):58-65.
• Article: Fabrication of magnesium hydroxide nanoneedles

  A. Al-Owais, E. H. El-Mossalamy, M. A. Shah, H.M. Arafa
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  ABSTRACT: Magnesium hydroxide Mg(OH)2 nanoneedles with diameters of 40–60 nm and lengths of more than 650 nm have been fabricated by a fast and safe route in de-ionized water. X-ray diffraction (XRD) showed that the Mg(OH)2 nanoneedles were well-crystallized with the hexagonal structure, whereas from the morphological investigations using scanning electron microscope (SEM), it was revealed that the nanoneedles are grown in a very high density over the whole foil substrate. The structure features were also analyzed by high~resolution transmission electron microscopy (TEM). The approach is based on a simple reaction of magnesium foil and de-ionized water without using surfactants. The reaction time is 3 h and the temperature is ~110°C. The advantages of producing nanoneedles using this method include ease, flexibility, speed, and cost. The process can easily be scaled up. KeywordsDl-water–Mg foil–fast synthesis–nanoneedles–structural properties
  Chemistry and Technology of Fuels and Oils 05/2012; 47(2):151-156.
• Article: Study of interphase film thinning in petroleum emulsion separation processes

  G. I. Kelbaliev, F. F. Safarov
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  ABSTRACT: Models are proposed for the thinning of an interphase film in petroleum emulsion separation processes, taking account of the Marangoni effect and the asphaltene content. The thickness of the adsorption layer on the surface of a drop is estimated. The computational and experimental data on the time dependencies of the interphase film thickness are compared. Key wordsemulsion–coalescence–separation–drop–surface film
  Chemistry and Technology of Fuels and Oils 05/2012; 47(4):268-277.
• Article: Development and modeling of production of biodiesel from sunflower oil

  R. Maceiras, J. J. Rivero, M. A. Cancela, S. Urrejola, A. Sanchez
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  ABSTRACT: A continuous process was developed for production of biodiesel from sunflower oil in basic medium. The conditions of conducting the process were found with consideration of the kinetics of the interesterification reaction. The model of the process can be useful for investigating its parameters, which will allow saving resources and time in constructing and operating the manufacturing unit for this process. In addition, this process, in comparison to other biodiesel production processes with confirmed ability to run them, can serve as a model for developing new or improving existing processes.
  Chemistry and Technology of Fuels and Oils 05/2012; 46(3):154-159.
• Article: Mechanism of action of oxygenates

  A. M. Miroshnikov, D. V. Tsygankov
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  ABSTRACT: The mechanism of the action of oxygenates is discussed from the standpoint of redox reactions. It is shown that the action of oxygenates on the process of combustion of hydrocarbons is associated with oxidation of the latter in steps. The reason for the increase in octane number upon addition of oxygenates may be different rate of overcoming conformational differences under conditions close to the critical temperature of the hydrocarbon at the pre-ignition combustion stage. The influence of propylene oxide on the performance properties of gasoline is examined.
  Chemistry and Technology of Fuels and Oils 05/2012; 45(3):177-182.
• Article: Additive-effect mechanism in disperse fuel systems

  S. T. Bashkatova, I. N. Grishina, L. A. Smirnova, I. M. Kolesnikov, V. A. Vinokurov
  Chemistry and Technology of Fuels and Oils 05/2012; 45(5):317-322.
• Article: Promising approach to inert-gas supply for oil refineries and petrochemical plants

  F. R. Ismagilov, V. D. Zorin, V. V. Kalinin, S. S. Yunusov, Z. F. Ismagilova, T. V. Zorina
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  ABSTRACT: The advantages and drawbacks of methods used to produce inert gases at oil and gas refineries are analyzed. The promising nature of the development of units for the production of inert gases based on treatment of flue gases released by these refineries is demonstrated in connection with trends established for the reconstruction and construction of sulfur-producing plants. Principal approaches to the development of a procedure for producing inert gases are outlined. Primary among these approaches is process and equipment integration for the cleaning of flue gases in a Klaus plant with a unit for tertiary treatment of the flue gases and the production of nitrogen and carbon dioxide.
  Chemistry and Technology of Fuels and Oils 05/2012; 45(2):68-71.
• Article: The mechanism of thermal oxidation of a hydrotreated naphthenic lube base oil at high temperature

  Han Sheng, Cheng Xinguo, Ma Shujie, Ren Tianhui
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  ABSTRACT: Using KN4010 as a base stock, we monitored changes in peroxide value and oxygen-containing compounds were monitored against time at high temperature, using iodometry and infrared spectroscopy (IR), in order to investigate the mechanism of oxidation of a hydrotreated lube base oil. The results of the tests indicate that the thermal oxidative mechanism conforms to the radical reaction theory, which is in the medium oxidative stage. The indirect analytical method of infrared spectroscopy is an effective method to study oxidative mechanisms. The content of carbonyl compounds and hydroxyl compounds decreased, and the content of hydroxyl compounds showed a slight increase at high temperature. No organic acids or esters were generated during the oxidative process.
  Chemistry and Technology of Fuels and Oils 05/2012; 45(4):260-266.
• Article: Homo- and Copolymers of N-Acryloylpyrrolidine and N-Vinylpyrrolidone as Kinetic Inhibitors of Hydrate Formation

  A. P. Semenov, P. A. Gushchin, E. V. Ivanov, V. A. Vinokurov, D. A. Sapozhnikov
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  ABSTRACT: Two copolymers of N-acryloylpyrrolidine and N-vinylpyrrolidone with a different ratio of monomeric units and two homopolymers; poly-N-acryloylpyrrolidine and poly-N-vinylpyrrolidone, were synthesized to study the effect of the composition of macromolecular compounds (MMC) on their inhibiting power during formation of gas hydrates. The composition of the MMC was confirmed by 1H and 13C NMR spectroscopy and the ratio of monomeric units in the copolymers was determined with the 1H NMR spectra. The inhibiting power of the synthesized MMC was determined during hydrate formation. Key wordsgas hydrates–kinetic inhibitors of hydrate formation–N-acryloylpyrrolidine–N-vinylpyrrolidone–supercooling
  Chemistry and Technology of Fuels and Oils 05/2012; 46(6):417-423.
• Article: Tribological properties of extracts from selective treatment of oildistillates

  M. B. Bergel’son, I. R. Tatur, B. P. Tonkonogov
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  ABSTRACT: The results of a study of the tribological properties of extracts – by-products of selective treatment of different oil distillates – and their effect on the same properties of greases prepared from these extracts are reported. Due to the high content of aromatic polycyclic and heterocyclic compounds, as well as resins and asphaltenes, which are natural antiwear components, the greases made from the extracts have performance properties equal to those of plastic greases made from classic oil mixtures, and their production is economically more advantageous. Key wordsextracts from selective treatment of oil distillates–tribological properties–greases made from extracts
  Chemistry and Technology of Fuels and Oils 05/2012; 47(1):20-22.
• Article: Optimization of synthesis of a sulfonate hydrogen sulfide corrosion inhibitor

  Z. R. Agaeva, K. I. Sadykhov, F. M. Velieva, I. G. Melikova
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  ABSTRACT: The inhibiting power of calcium alkylphenol sulfonate obtained by varying the ratios of the initial components was investigated with the optimization method. Using a method from mathematical statistics, the optimum values of the ratio of the basic reagents and conditions of synthesis of effective hydrogen-sulfide metal corrosion inhibitors were found.
  Chemistry and Technology of Fuels and Oils 05/2012; 46(5):363-366.
• Article: Simulation of catalyst on-line replacement for Fischer-Tropsch synthesis in slurry bubble column reactor

  Wei Fan, Xu Hao, Yuanyuan Xu, Yongwang Li
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  ABSTRACT: A multi-phase dynamic model has been developed for Fischer-Tropsch synthesis in a slurry bubble column reactor operating in a heterogeneous flow regime. The catalyst particles concentration distribution, deactivation, and on-line replacement were considered in this model. The population balance equation model has been utilized to calculate the catalyst age distribution. Based on the dynamic model, the process of catalyst replacement has been investigated, and the effect of catalyst replacement on the design and operation of the reactor has been studied. A correlation between the catalyst replacement rate and the catalyst activity has been developed in this research [ AC = ( 1 - a¥ )e - kdt + a¥ ] \left[ {{A_C} = \left( {1 - {\alpha_\infty }} \right){e^{ - {k_d}t}} + {\alpha_\infty }} \right] . KeywordsBubble column reactors–dynamic simulation–mathematical modeling–catalyst replacement–deactivation
  Chemistry and Technology of Fuels and Oils 05/2012; 47(2):116-133.
• Article: Correlation of the adhesive properties of petroleum paving asphalts and high-melting paraffin content

  A. S. Shirkunov, V. G. Ryabov, A. V. Kudinov, A. N. Nechaev, A. S. Degtyannikov
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  ABSTRACT: The effect of the high-melting paraffin content in petroleum paving asphalts on their adhesive properties was analyzed. The paraffin content was varied by adding petrolatum – high-melting paraffin concentrate, the closest in structure to asphalt paraffins (confirmed by IR spectroscopy) – to the asphalts. The adhesive properties of the asphalt binder were evaluated with the contact angle of wetting on glass and polished marble plates and according to GOST 11508–74. It was shown that a contentunder 5% virtually does not worsen its adhesive properties. Key wordspetroleum paving asphalts–high-melting paraffin content–adhesive properties
  Chemistry and Technology of Fuels and Oils 05/2012; 47(1):48-52.
• Article: Interrelation of rectification sharpness and the benzene distribution in gasoline fractions

  S. I. Kolesnikov, V. A. Lyubimenko, M. Yu. Kil’yanov, I. M. Kolesnikov, V. A. Vinokurov, E.V. Ivanov
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  ABSTRACT: The behavior of the benzene distribution in six gasoline fractions is described. A parametric equation adequately reflecting the experimental data is obtained. The energies of benzene complexes with hydrocarbons are determined by means of a quantum calculation. Key wordsdistillation-separation–benzene–quantum-chemical calculation–parametric equation
  Chemistry and Technology of Fuels and Oils 05/2012; 47(3):201-208.
• Article: Effect of temperature in cutting deep holes on the content of harmful components in oil-based coolants

  N. V. Skoropistseva, Yu. V. Golubkov, M. E. Kushcheva
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  ABSTRACT: It was found that in cutting deep holes, with an increase in the temperature from 20 to 80°C, the content of harmful components: 9- and 2-methylanthracene, 3-methylphenanthrene, etc., in oil-based MR-3K coolant (CL) decreases by 15–25%, i.e., they enter the air of the working zone. The necessity of additional treatment of CL to remove polycyclic aromatic hydrocarbons to minimize the harmful effect on humans and the biosphere as a whole is demonstrated.
  Chemistry and Technology of Fuels and Oils 05/2012; 46(1):66-69.
• Article: Tar-based polymer-bitumen binder for road construction

  N. M. Likhterova, Yu. P. Miroshnikov, E. S. Lobankova
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  ABSTRACT: The possibility of getting polymer-bitumen binders (PBB) based on straight-run tar (heavy resid) has been studied. It is shown that tar-based PBB composite is characterized by improved performance properties and reduced materials consumption for their production.
  Chemistry and Technology of Fuels and Oils 05/2012; 45(6):429-439.
• Article: Fuel coal suspensions

  S. L. Khil’ko, E. V. Titov
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  ABSTRACT: The features of production and use of fuel coal suspensions of three basic types: water-, alcohol-, and oil-coal, are analyzed.
  Chemistry and Technology of Fuels and Oils 05/2012; 44(1):73-79.
• Article: Pulping black liquor used directly as a green and effective source for neat oil and as an emulsifier of catalytic cracking heavy oil

  Ge Xu, Ji-he Yang, Hui-hui Mao, Zhi Yun
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  ABSTRACT: The objective of this study is to evaluate the use of emulsified heavy oils to conduct the FCC reaction. The emulsified heavy oil was prepared by homogenizing. Properties of emulsified heavy oil, including interfacial tension, dynamic viscosity, droplet distribution, and stability, were determined. Emulsified heavy oils were made using two types of pulping black liquor, namely untreated and partially recycled alkali black liquor. Stabilized emulsified heavy oil was used in the FCC reaction to investigate the product distribution, and pure heavy oil was used as the control. If the black liquor infiltration capacity is 5 wt. %, the catalytic cracking conversion and selectivity of the emulsified heavy oil and pure heavy oil were appraised at a temperature of 450°C using a fluid fixed bed.Compared with the pure heavy oil, the emulsified heavy oil had higher conversion and better selectivity towards the liquid products, and the liquid products yield of l-E-5 emulsion increases from 66.73 wt. % to 71.30 wt. %. Furthermore, the selectivity towards coke of emulsified heavy oil conversion is lower than that of the pure heavy oil, and the coke yield of l-E-5 emulsion decreases from 10.74 wt. % to 6.26 wt. %. The No.l black liquor is more suitable as a catalytic cracking black liquor fuel oil emulsifier than that of No.2 black liquor. Additionally, the negative effect of the emulsified heavy oil on the catalysis is limited, and the useful life of the catalysis was extended. Keywordsblack liquor–heavy oils–emulsion–catalytic cracking reaction
  Chemistry and Technology of Fuels and Oils 05/2012; 47(4):283-291.
• Article: Effect of the grain-size distribution and water content of rock on the natural attenuation of diesel fuel in the vadose zone

  Qu Zhihui, Zhao Yongsheng, Zhou Rui, Dong Jun, Jiao Lina, Wang Bing, Jiang Huizhong, Zheng Wei
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  ABSTRACT: Five simulating columns were used to investigate the effect of the grain-size distribution and water content of rock on the migration and natural attenuation of diesel fuel in the vadose layer. Natural attenuation of fuel was observed for 90days. It was shown that as the grain size of the rock increases, the water content that cannot be replaced by diesel fuel in the rock decreases. An increase of the water content has a positive effect on the natural attenuation of diesel fuel. Key wordsgrain-size distribution–water content–natural attenuation–diesel fuel–vadose zone
  Chemistry and Technology of Fuels and Oils 05/2012; 47(3):230-236.
• Article: Comparison of the physicochemical characteristics of biofuels and petroleum fuels

  K. E. Pankin, Yu. V. Ivanova, R. I. Kuz’mina, S. N. Shtykov
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  ABSTRACT: The physicochemical properties of liquid biofuels of different types (bioalcohols, biodiesel, etc.) in comparison to the same characteristics of petroleum fuels were examined. The advantages and disadvantages of biofuels with respect to these characteristics were demonstrated. Key wordsbiofuel–physicochemical properties
  Chemistry and Technology of Fuels and Oils 05/2012; 47(1):7-11.