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  • Journals
  • Articles  (8,941)
  • Springer  (8,941)
  • Chemistry and Technology of Fuels and Oils  (520)
  • 9396
  • Process Engineering, Biotechnology, Nutrition Technology  (8,941)
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  • Journals
  • Articles  (8,941)
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  • Springer  (8,941)
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  • 1
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    Advances in dewaxing and deoiling technology (2007)
    Springer
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    Publication Date: 2007-03-01
    Print ISSN: 0009-3092
    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 2
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    Development and Use of a Downhole System for Measuring Drilling Engineering Parameters (2015)
    Springer
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    Publication Date: 2015-08-05
    Description: A system capable of operating in downhole conditions at depths of several thousand meters is developed for measuring drilling engineering parameters (DEP) in real time. The aim is to monitor DEP during drilling, including the weight on the drill bit (WOB), torque on the drill bit (TOB), and lateral force on the drill bit. The design of the structure and parameters of the sensors, calibration of the sensors, and the field test results are described. Four separate strain gages and a measuring system are designed to measure DEP in the downhole during drilling in real time. The field tests show that the designs are sound. The measured axial force is greater than the calculated value, which means that the real WOB is higher than the logging WOB and the real TOB is greater than the logging torque. Thus, the survey instruments can meet the requirements for rotary steerable drilling and conventional drilling. The measured WOB and TOB data can also be used to analyze drill string vibrations.
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    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 3
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    Chemmotological Principle of Evaluating Deposit Forming Tendency of Automotive Motor Oils (2015)
    Springer
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    Publication Date: 2015-08-05
    Description: The possibility of predicting motor oil behavior at high and low (moderate) temperatures is shown, and based on this a model that allows prediction of deposit forming tendency of oil at high (HTD) and low (LTD) temperatures is built within the framework of formulation of a physicomechanical (or motochemical) approach. The specific nature of HTD and LTD formation is associated with the peculiarities of disperse phase behavior, which is realized in various degrees of filling of the phase surface by oil additives and is expressed in the difference of temperature stability of surface (protective) layers.
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 4
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    Composition and Properties of Oxidation Products of Heavy Oil Resid Asphaltenes (2015)
    Springer
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    Publication Date: 2015-06-09
    Description: Asphaltenes of various heavy oil resids are oxidized by aqueous sodium percarbonate solutions at 200°C and 4 MPa pressure. The composition and properties of the obtained products are analyzed. Water-soluble oxidation products in the asphaltene oxidation products comprise 47.4-49.4%. Products of oxidative condensation of asphaltenes enriched with hydroxyl, ether, and carboxyl groups dominate in the composition of water-insoluble oxidation products. The water-soluble oxidation products represent carboxylic acid concentrate. The characteristics of the structural-group composition of the obtained oxidation products are disclosed. The possibility of practical utilization of asphaltene oxidation products as adhesion additives to road asphalt and for removal of phenol from water is demonstrated.
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    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 5
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    Kinetics Characteristics and Efficiency of Carbon Dioxide Absorption from Biogas by Dolomite Suspensions (2015)
    Springer
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    Publication Date: 2015-06-09
    Description: Apparent kinetic parameters of carbon dioxide sorption from biogas using solutions produced by suspending calcined dolomite are given. The optimum and effective CO 2 absorption temperature is 20°C. Kinetic calculations show that the apparent absorption order and the apparent absorption rate constant decrease with a rise of temperature. It is shown that the CO 2 absorption rate is a direct function of CO 2 partial pressure and an inverse function of temperature. A dolomite solution obtained by filtration of a 1% dolomite suspension in water is recommended for CO 2 absorption.
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    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 6
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    Conversion of Straight-Run Gasoline Fraction on Combined Zeolite-Containing Catalysts (2015)
    Springer
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    Publication Date: 2015-06-09
    Description: Experiments were performed on catalytic hydrogen-free upgrading of low-octane gasoline fractions on zeolite-containing catalysts with various silicate moduli. Chromatographic analysis showed the influence of a change in the molecular-sieve characteristics of zeolite-containing catalysts on the individual and group composition of the obtained gasolines. It was found to be expedient to combine zeolite-containing catalysts with various silicate moduli in the catalyst composite in order to increase the conversion of the feedstock fraction.
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    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 7
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    Modification of Petroleum Bitumen by Oxygen-Containing Compounds and Transition Metal Oxides (2015)
    Springer
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    Publication Date: 2015-09-22
    Description: The patterns of change in component and structural-group composition of bituminous binders modified by oxygen-containing compounds and finely dispersed Mn (II) oxide are determined. Manganese ions, taking part in high-temperature oxidation-reduction reactions of modifier compounds containing acyl radicals and double bonds, are capable of forming oxy-radicals in the presence of air oxygen. The content of alcohol-benzene resins, aromatic structures, and carbonyl groups increases in the samples. The obtained samples of modified binders have improved adhesive and low-temperature properties, which allow production of high-strength asphalt concrete surfacings.
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    Electronic ISSN: 1573-8310
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 8
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    Two Techniques for Reducing Sucker-Rod Loads in Deep Wells (2015)
    Springer
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    Publication Date: 2015-09-22
    Description: Deep and superdeep reservoirs over 5000 m deep are continually being discovered and developed in Western China, particularly in the Tarim Basin. The low pressure in these reservoirs makes it necessary to run sucker-rod pumps to great depths, which increases the load on the polished rod and creates pumping problems in deep wells. This study examines two rod-load-reduction techniques for deep wells, one using composite fiberglass-steel rods and the other using load reducers for the rods. The effects of these techniques on polished-rod load reduction are evaluated by calculation based on well operation data and comparison of the two techniques. Energy efficiency is analyzed by calculating the torque based on the difference between the maximum and minimum loads on the polished rod. The study results show that composite fiberglass-steel rods reduce the maximum load by 35.7% and that the load reducer decreases the load by an average of 22.8%, which is a significant outcome. The composite fiberglass-steel rod is more energy efficient than the load reducer.
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 9
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    Synthesis and Structure of Some N -(4-Sulfamoylphenyl)Amide Derivatives and the Corresponding Hydrazones (2015)
    Springer
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    Publication Date: 2015-09-22
    Description: Condensation of sulfanilamide with acid anhydrides produced the corresponding amide derivatives, which on treatment with hydrazine hydrate yielded the hydrazones. The structures of the prepared compounds were confirmed by IR, PMR, and 13 C NMR spectroscopy and x-ray crystallography.
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 10
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    Effect of Pressure and Type of Fuel on Laminar Diffusion Flame Height at Subatmospheric Pressures (2015)
    Springer
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    Publication Date: 2015-09-22
    Description: We have measured the shape of the luminous zone in a laminar jet diffusion flame burning methane, ethylene, and propane in quiescent air in the pressure range 0.02-0.1 MPa. Soot emission by the flame was not permitted. The flame became more slender and luminous as the pressure increased. At relatively high fuel flow rates, the ethylene and propane flame heights increased with pressure. At low fuel flow rate, the flame height decreased as pressure increased for all three fuels. At high fuel flow rate, the methane flame height first decreased and then increased with pressure, due to the low tendency of methane to form soot. Finally, we observed a tendency toward decreasing – increasing – decreasing flame height at certain fuel flow rates and in certain pressure ranges.
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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