scholarly journals RESULTS OF RESEARCH ON THE USE OF MAGNETIC FLUIDS IN THE PROCESS OF OIL REFINING FROM TAR SANDS

2021 ◽  
Vol 08 (04) ◽  
pp. 46-52
Author(s):  
Tarana Sadigova Tarana Sadigova
Keyword(s):  
Electric Fields ◽  
Magnetic Fluids ◽  
Theoretical Research ◽  
Oil Yield ◽  
Oil Refining ◽  
Residual Oil ◽  
Tar Sands ◽  
Physical Fields ◽  
Scientific Practical ◽  
Yield Factor

Despite extensive theoretical research, scientific-practical and various engineering works in the field of separation of residual oil in bituminous sands, the problem remains relevant. For this purpose, the article considers the issue of improving the process of separation of oil from bituminous sands under the influence of physical fields. Keywords: Bituminous sands, ferromagnetic based fluids, magnetic and electric fields, oil yield factor.

Magnetoviscous Effects In Ferrofluids

2000 ◽  
Vol 10 (4) ◽  
pp. 178-184 ◽  
Author(s):  
S. Odenbach
Keyword(s):  
Magnetic Field ◽  
Magnetic Particles ◽  
Magnetic Fluids ◽  
Experimental Methods ◽  
The State ◽  
Theoretical Research ◽  
Sedimentation Stability ◽  
Nanometer Range ◽  
Microscopic Models

Abstract Suspensions of magnetic particles with diameters in the nanometer range exhibit longterm sedimentation stability as well as the possibility of magnetic field induced control of their properties and flow. One of the most famous field induced effects is the change of viscosity of the fluids due to the action of magnetic influences. An explanation of these effects on basis of microscopic models is a challenging field of actual experimental and theoretical research. Within this article the state of knowledge on magnetoviscous effects in magnetic fluids will be summarized and in particular the experimental methods used to obtain related results will be discussed.

scholarly journals GENERALIZED MATHEMATICAL MODEL OF PHYSICAL FIELDS OF TECHNOLOGICAL REDISTRIBUTIONS OF MANUFACTURING ELECTROGRAPHITE PRODUCTS

2021 ◽  
pp. 28-43
Author(s):  
S.V. Leleka
Keyword(s):  
Mathematical Model ◽  
Numerical Models ◽  
Nonlinear Behavior ◽  
Frame Of Reference ◽  
Theoretical Research ◽  
Chemical Components ◽  
Carbonaceous Materials ◽  
Physical Processes ◽  
Physical Fields ◽  
Materials Used

A generalized mathematical model of the physical fields of the main technological redistributions of electrographite products is developed, which is based on a continuous-discrete approach to the description of nonlinear behavior of solids, liquids and gases, and bulk media. It is shown that the continuous formulation of physical processes in the technology of carbongraphite production is based on the Euler frame of reference and may include the following equations: conservation of mass, momentum and energy, electrical conductivity in the vortex-free approximation of electric potential and transport of chemical components of combustion reactions. The discrete formulation of physical processes in bulk materials used in the technology of production of carbon graphite products is based on the Lagrangian frame of reference and may include the following equations: translational and rotational motion and energy. The application of the generalized mathematical model for construction or refinement of mathematical and numerical models of separate redistributions for performance of the numerical analysis of physical fields and parameters of processes and the equipment on examples of pressing of "green" electrode preparations and theoretical research of effective thermophysical properties of loose carbonaceous materials. On the basis of the developed generalized statement, the complex of separate mathematical models of such redistributions of production of electrographite production as: calcination of carbonaceous materials in electrocalciners, gasification of carbonaceous materials in the equipment of rotary calcination furnaces is also formulated and specified, burning and graphitization of electrographite blanks.  Bibl. 40, Fig.  4.

scholarly journals Innovative and flexible single screw press for the oil extraction of Calophyllum seeds

2019 ◽  
Author(s):  
Yuli Setyo Indartono ◽  
Heriawan Heriawan ◽  
Ika Amalia Kartika
Keyword(s):  
Moisture Content ◽  
Feed Rate ◽  
Acid Value ◽  
High Viscosity ◽  
Oil Extraction ◽  
Screw Press ◽  
Oil Yield ◽  
Oil Refining ◽  
Pressing Temperature ◽  
Single Screw

The oil extraction of Calophyllum seeds using a conventional single screw press leads to an inferior yield and is perceived to be less efficient as well as difficult to operate. An innovative and flexible single screw press was, therefore, designed and investigated in this study to solve these problems. Moreover, the effects of the seeds’ moisture content, pressing temperature and seeds’ feed rate on the oil yield and quality were identified to determine the optimal oil extraction performance from the Calophyllum seeds. The study found that the seeds’ moisture content, pressing temperature and seeds’ feed rate generally affected the oil yield. The yield indeed improved as the pressing temperature and the seeds’ feed rate increased respectively from 45 to 75°C and 1.5 to 5 kg·h<sup>–1</sup>. The oil yield also ameliorated as the seeds’ moisture content rose from 1.7 to 12.8%, but it was optimal when the seeds’ moisture content was 5.5%. The best oil yield of 80.6% was, thus, obtained with the seeds’ moisture content of 5.5%, a pressing temperature of 75°C and the seeds’ feed rate of 5 kg per h. Although the quality of the crude oil was poor with a high viscosity (³ 94 mm<sup>2</sup>·s<sup>–1</sup>) and high acid value (³ 48 mg KOH/g), its density, saponification and iodine values were acceptable. After the oil refining process by degumming and neutralisation, its quality improved and met the Indonesian Biofuel Standards, except for its viscosity.

scholarly journals Remediation of Soil Polluted by Organic Compounds Through Chemical Oxidation and Phytoremediation Combined with DCT

2019 ◽  
Vol 16 (17) ◽  
pp. 3179 ◽  
Author(s):  
Elena Cristina Rada ◽  
Gianni Andreottola ◽  
Irina Aura Istrate ◽  
Paolo Viotti ◽  
Fabio Conti ◽  
...  
Keyword(s):  
Electric Fields ◽  
Industrial Area ◽  
Electrochemical Treatment ◽  
Chemical Oxidation ◽  
Oil Refining ◽  
Contaminated Sites ◽  
Initial Characterization ◽  
Industrial Use ◽  
The One

Soils contaminated with organic substances is an important issue across Europe: In some areas, these are the main causes of pollution, or the second after contamination from waste disposal. This paper included an experimental application that compared three methods of remediation of contaminated sites, based on electric fields: A single treatment (electroremediation); and two combined treatments, phyto-electrochemical and electrooxidation (a combination of chemical treatment and a DCT—direct current technology). The contaminated soil was taken from a former industrial area devoted to oil refining, located between two roads: The one national and the other one for industrial use. Nine soil samples were collected at two depths (0.2 and 0.4 m). The initial characterization of the soil showed a density of 1.5 g/cm³ and a moisture of about 20%; regarding grain size, 50% of the soil had particles with a diameter less than 0.08 mm. The electrochemical treatment and electrooxidation had an efficiency of 20% while the two combined methods had efficiencies of 42.5% for electrooxidation (with H2O2) and 20% for phyto-electroremediation (phyto-ER) with poinsettias.

scholarly journals The frontiers of North America’s fossil fuel boom: BP, Tar Sands, and the re-industrialization of the Calumet Region

2019 ◽  
Vol 26 (1) ◽  
pp. 38 ◽  
Author(s):  
Graham Pickren
Keyword(s):  
Fossil Fuels ◽  
Fossil Fuel ◽  
Lake Michigan ◽  
Oil Refining ◽  
Fuel Distribution ◽  
Tar Sands ◽  
The North ◽  
History Of ◽  
The Relationship ◽  
The City

<p>This article focuses in on the ways in which the North American energy boom is reworking environments and livelihoods in the Great Lakes, focusing in particular on the expansion of BP's Chicago-area refinery as it has pivoted towards processing Canadian tar sands oil. In examining this 're-industrialization', the article contributes to an ongoing discussion about the relationship between fossil fuels, limits to capitalism, and the importance of frontiers in resolving capitalist crises. The first empirical section of the article looks at the early history of the Calumet's development as a hub for fossil fuel distribution and refining and, drawing from Moore's 'world-ecology framework', demonstrates the ways in the <em>appropriation of unpaid work/energy</em> - in particular the appropriation of the wetlands that make up the southern tip of Lake Michigan - serves as the underappreciated condition of possibility for the BP Whiting refinery's existence. Today, this combination of productivity and plunder continues in the region, illustrating urban metabolisms that are not confined to the city. In the second empirical section of the article, I argue that despite predictions of crises arising from declining ecological surpluses, in Calumet today, BP <em>is</em> finding new frontiers of surplus value production, both in the form of producing petcoke and in continued geographic expansion in the region. As a way of understanding the persistence and adaptive capacity of capital, even in degraded landscapes like Calumet, I consider Johnson's concept of 'accumulation by degradation' as an excellent tool for understanding dynamics in the region. The production of both petcoke and pollution – undesirable from a social and ecological perspective – sustain BP's industrial colonialism in the region because they ensure weakened competition and below market rents that allow for expansion and place-based longevity.</p><p><strong>Keywords: </strong>tar sands, oil, refining, appropriation, accumulation by degradation, Chicago<strong></strong></p>

Theoretical Research on Fluorocarbon Surfactant of Fluorocarbon-Based Magnetic Fluid

2011 ◽  
Vol 211-212 ◽  
pp. 82-86 ◽  
Author(s):  
Hong Chao Cui ◽  
De Cai Li ◽  
Jian Ling Li
Keyword(s):  
Magnetic Fluid ◽  
Magnetic Fluids ◽  
Superior Performance ◽  
Theoretical Research ◽  
Fluorocarbon Surfactant ◽  
Research Frontiers ◽  
Base Liquid

In this paper, we briefly introduce the concept, composition and the research frontiers of nano-fluorocarbon-based magnetic fluids; then discuss the superior performance, classification and synthesis of the fluorocarbon surfactant in detail and systematically; last, we made an example to illustrate fluoro olefin telomerization method. Research on fluorocarbon surfactant is crucial for further exploration of its coordination to base liquid-perfluoropolyether and further preparation of fluorocarbon-based magnetic fluids.

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