international journal of chemical and petroleum sciences

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    APPROCHE EXPERIMENTALE DE LA LONGUEUR DU ROULEAU DU SURFACE DU RESSAUT HYDRAULIQUE DANS UN CANAL PROFILE EN “U” A FOND RUGUEUX
    (جامعة الوادي - university of el oued, 2013) Ghomri, A; Riguet, F; Debabeche, M
    This study aims to experimentally evaluate an experimental approach to the length of the roller surface of the hydraulic jump controlled by threshold, moving in a channel profile 'U' rough bottom roughness for different tested. a functional relationship in dimensionless term, linking the different characteristics of the projection, showing the effect of the roughness of the channel bottom was obtained
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    APPROCHE EXPERIMENTALE DE LA LONGUEUR DU ROULEAU DU SURFACE DU RESSAUT HYDRAULIQUE DANS UN CANAL PROFILE EN “U” A FOND RUGUEUX
    (جامعة الوادي - university of el oued, 2013) Ghomri, A; Riguet, F; Debabeche, M
    This study aims to experimentally evaluate an experimental approach to the length of the roller surface of the hydraulic jump controlled by threshold, moving in a channel profile 'U' rough bottom roughness for different tested. a functional relationship in dimensionless term, linking the different characteristics of the projection, showing the effect of the roughness of the channel bottom was obtained.
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    AREAL (2-D) SIMULATION OF WATER FLOOD PROCESS IN UNITE WELL PATTERN
    (جامعة الوادي - university of el oued, 2013) Wan, Wan; Wang, Shengbo
    In this project, the partial differential equations governing water flood in a unit well pattern were solved numerically and then the numerical solutions were used to construct the contour and surface plots of reservoir pressure and water saturation. The reservoir pressure and water saturation at a given location in the reservoir as a function of injection time were also simulated. The simulation results show that the reservoir pressure and water saturation gradually decreases with increasing the distance from the injection well. In addition, the reservoir pressure and water saturation gradually increase with increasing injection time at the location of (20 m, 20 m) in the reservoir. The water saturation gradually increases with increasing injection time at the production well
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    ASPEN HYSYS SIMULATION AND COMPARISON BETWEEN ORGANIC SOLVENTS (SULFOLANE AND DMSO) USED FOR BENZENE EXTRACTION
    (جامعة الوادي - university of el oued, 2013) Zaiz, T; Lanez, H; Kechida, B
    Due to the high increase of the production of aromatic hydrocarbons: benzene, toluene and xylenes BTX from oil because of the large activity of their big markets especially with the availability of great quantities of these aromatic fractions in the oil. This study has two main parts the first presents a general vision of the aromatic hydrocarbons, the second is going to focus on the liquidliquid extraction with the selected solvents as a separation method. The solvent selection depends on many properties. In this second part there will be a simulation (conception and execution) of the liquid-liquid extraction of aromatics by two different organic solvents Sulfolane and DMSO followed by a comparison between the results obtained by the simulation. The simulator used will be ASPEN HYSYS 7.2. The results of the simulation showed that the use DMSO is better than Sulfolane because of the separation efficiency the economic value and the regeneration rate although its use is more dangerous (more toxic) than the Sulfolane
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    BIOSORPTION OF ORGANIC AND INORGANIC POLLUTANTS FROM SIMULATED WASTEWATER BY USING EQUISETUM HORSETAIL
    (جامعة الوادي - university of el oued, 2014) Abbas, H; Sulaymon, Hayfa'a; Swadi, L.
    Equisetum horsetail was used to poducebioadsorbent through easy and environmental friendly processes. This equisetum based biosorbent was evaluated for removal of Hg2+ and furfural from simulated wastewater using granule equisetum horsetail was investigated. Batch type experiments were carried out to find the equilibrium isotherm data for single and binary system. Many isotherm models were used for single component and binary system. Langmuir model gave the best fitting for the single system (R2 Fu = 0.9946 and R2Hg2+= 0.9935), while the binary system was fitted successfully with extended Langmuir model (R2 Fu = 0.9977and R2Hg2+ = 0.9969).Pseudo-first order, pseudo-second order, intra-particle diffusion and Elovich choose forkinetic study. Pseudosecond order model was well fitted for Hg2+ and furfural (R2 Fu = 0.9942 and R2Hg2+ = 0.9910). Thermodynamic parameters including the Gibbs free energy and enthalpy changes indicated that the biosorption of furfural and Hg2+ ions onto biosorbent was feasible, spontaneous and exothermic reactions. Significant desorption of Hg2+ and furfural from simulated wastewater were obtained when using 0.1M NaOH and HCl.
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    CONVECTION HEAT TRANSFER AND MAGNETOHYDRODYNAMICS STABILITYOF SWIRLING FLOWS IN CYLINDRICAL CONTAINER
    (جامعة الوادي - university of el oued, 2014) Boukhari, A; Khechekhouche, A; Bessaih, R
    In the present work, a study of the mixed convection flow of low Prandtl number fluid ( Pr  0.015 ) confined in a cylindrical container having an aspect ratio equal to 2, with and without magnetic fields, has been considered. The finite volumes method has been used to resolve the equations of continuity, momentum (or Navier-Stokes), energy and electric potential. In the absence of magnetic field, the numerical results obtained show the appearance of oscillatory instabilities for the values of the critical Reynolds number Re  2575,924,802, cr and606 , corresponding respectively to the values of the Richardson number Ri  0, 0.5, 1.0 and 2.0. However, in the presence of the vertical magnetic field, the fluid continues its stable flow until the values of Reynolds number greater than those predictable to have oscillatory instabilities. Stability diagrams have been established according to the numerical results of this investigation. These diagrams put in evidence the dependence of the critical Reynolds number and critical frequency of oscillations with the increase of the Hartmann number for various values of the Richardson number. In conclusion, the stabilizing technique of the mixed convection flows of fluids having low Prandtl number (semiconductors) by the application of an external magnetic field is practically reliable.
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    CORROSION INHIBITION OF CARBON STEEL XC70 IN H2SO4 SOLUTION BY FERROCENE DERIVATIVE 4-(FERROCENYLMETHYLAMINE) BENZONITRILE
    (جامعة الوادي - university of el oued, 2012) Zaiz, T; Lanez, T
    In this work, we studied the efficiency of corrosion inhibition of carbon steel XC70 in H2SO4 0.5 M solution using ferrocenyl compound prepared in our laboratory, this compound is: 4- (ferrocenylmethylamine)benzonitrile (FC). The inhibitory potential of this compound was determined by electrochemical techniques based on Tafel segments. The results show that the studied compound has an efficiency of inhibition which depends on its concentration the adsorption of these compounds on the surface of the metal is a chemical adsorption. The compound FC had the best ability of inhibition at a concentration of 30 ppm (IE = 75.36%).
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    ELECTROEXTRACTION OF Cd(II) IONS FROM DILUTED SOLUTIONS BY A HYBRID PROCESS COMBINING ELECTRODIALYSIS AND ION-EXCHANGE
    (جامعة الوادي - university of el oued, 2015) Mehellou, Ahmed; Delimi, Rachid; Benredjem, Zahia
    The aim of this work is to highlight the coupling efficiency of electrodialysis and ion-exchange processes for treating water containing heavy metal ions at low concentrations. This hybrid technique called electropermutation (EP) or also continuous electroregeneration. The effects of various physico-chemical parameters on the efficiency of the coupled process such as pH, flow rate of feed solution circulation, density of the applied current and initial concentration of Cd(II) in the solution have been studied. The results obtained show that the removal and transfer of Cd(II) ions decreases with the increase of the flow rate of feed solution and with pH increasing. Furthermore, the increase of the current density enhances the elimination and therefore the transfer of this ion until a density value of 10 mA.cm−2. The EP on resin remains effective until a 224.8 mg.L−1 of Cd(II) ions in the feed solution. Overall, under the optimal operating conditions determined, the hybrid technique of EP removes about 98% of Cd(II) from a dilute solution
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    THE INFLUENCE OF ACID GAS LOADING ON THE PERFORMANCE OF ACID GAS ENRICHMENT (AGE) ABSORBER COLUMN
    (جامعة الوادي - university of el oued, 2015) Mahdipoor, Hamid Reza
    The Claus process is used to recover sulfur from acid gases and therefore, reduce environmental pollution. A lean acid gas feed containing a relatively low concentration of hydrogen sulfide lead to an unstable flame in reaction furnace and also deterioration of the catalyst in reactors due to incomplete combustion of hydrocarbons and soot or carbon deposition. Several alternatives are available to overcome this problem. Acid Gas Enrichment (AGE) is one of these methods using Amine solution to selective absorption of H2S and enrichment of acid gas. In this paper, the influence of acid gas loading in lean Amine on the performance of AGE absorber column is investigated. The achieved results shows this factor is a critical factor in the performance of selective absorption and therefore, more caution should be considered in the simulation of amine stripper
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    INTRODUCTION OF COTTON GUM AS A NATURAL POLYMER TO ENHANCED OIL RECOVERY
    (جامعة الوادي - university of el oued, 2015) Arjmand, O; Zarekhafri, A
    Polymer flooding as an enhanced oil recovery (EOR) method is widely utilized to improve water flooding and plays an important role during EOR process. Partial hydrolyzed poly acryl amide (HPAM) as one of the well known polymers is used in order to have a decrease water/oil mobility ratio in oil reservoirs. As this polymer is decomposed at reservoirs having high temperature and high salinity, the use of this polymer is limited. This study introduces cotton gum as a new natural polymer which can be used for polymer flooding. Cotton gum as a polysaccharide is obtained from the natural cottons. To compare this polymer with HPAM, related experiments including thermal decomposition and viscosity tests in same conditions were conducted and our experiments confirm that this polymer shows a good resistance against high salinities and temperatures
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    MODELING AND CFD SIMULATION OF ZINC SULPHATE FERTILIZER GRANULE DISSOLUTION IN SOIL SOLUTION
    (جامعة الوادي - university of el oued, 2014) Karimi, Sh; Mousavi, M; Arjmand, b O
    Improving the use efficiency of fertilizers and controlling the rate of fertilizers dissolution has been an important mater in fertilizers manufacturing. In this study, an unsteady two dimensional model has been considered to predict release time of zinc sulphate fertilizer granules. Note that zinc sulphate is a strong electrolyte. The spherical granule modelling has been coupled to the soil solution. This coupling model has been used to remove reaction rate term in the spherical granule governing equation. It is assumed that the surface reaction is existed on solid-liquid surface. The computational fluid dynamic (CFD) calculation with the finite element method (FEM) has been carried out to simulate the governing equation. The effects of some important parameters such as the height of soil solution (h) and the radius (R) of fertilizer granule have been investigated. The complete release time has been achieved for different value of ratio of h and R.
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    MODÉLISATION ET RÉSOLUTION NUMÉRIQUE DE L'ÉQUATION DE POISSON EN 2D PAR LA MÉTHODE DE DIFFÉRENCE FINIE CAS DE L'ÉQUATION DU TRANSFERT DE LA CHALEUR
    (جامعة الوادي - university of el oued, 2012) Benhissen, N; Khechekhouche, A
    The objective of this work is to solve the Poisson equation by the finite difference method is therefore to provide an approximate solution of the actual behavior of a physical phenomenon. Such as the equation of heat transfer. We will take as a model of square/rectangular plate, with different boundary conditions and we will specify also the values boundaries (the Dirichlet condition). The analysis is based on the simulation results based on certain criteria and choice of parameters that comes into play in the equation, this will give us a good understanding of the manipulation of these parameters and thus understand what is happening on environment studied
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    NUMERICAL MODELING OF A PARABOLIC TROUGH SOLAR COLLECTOR AT BOUZARÉAH, ALGERIA
    (جامعة الوادي - university of el oued, 2015) Ghodbane, M; Boumeddane, B
    In this paper, we are interested in numerical study conversion of the solar energy into thermic energy using a Parabolic through Collector at Bouzaréah, Algeria. Water is used as a heat carrier fluid. A mathematical model drawn from the energy balance equation applied to the absorber tube, it was solved by the finite difference method. A computer program was developed to solve our problem. MATLAB used as a tool for simulation. This program allows calculating the change in thermal efficiencies, the absorber tube temperatures, the fluid temperatures, the glass temperatures and the coefficient of heat loss. The results are very honorable and encouraging, where the thermal efficiency of the concentrator had passed 60%.
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    AN OVERVIEW OF THE POLYMER GEL TECHNIQUE TO IMPROVE THE EFFICIENCY OF WATER FLOODING INTO OIL RESERVOIRS (WITH INTRODUCTION OF A NEW POLYMER)
    (جامعة الوادي - university of el oued, 2013) Arjmand, O; Ahmadi, M; Hosseini, L
    An important property of polymer gels is that the injected fluid in the fracture area with high permeability moves and can form a solid mass, in result of water and gas permeability because of the formation of this layer will be decreased. In gel polymer techniques first amount of the polymer solution is injected into the reservoir with a low rate, then the cross link solution such as aluminum or magnesium citrate is injected into the reservoir and gel to be figured. Therefore, improves oil recovery and reduces the percent of water production. This study concerns a light review on gel polymer process and this study introduces a new polymer with superior flooding property to water shut - off, too
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    REDUCTION TOTAL ACID NUMBER (TAN) OF SOME SUDANESE CRUDE OILS BY ZEOLITE AND CLAYS
    (جامعة الوادي - university of el oued, 2015) Osman, Waleed Salih Ibrahim
    The aim of this study was to reduce total acid number (TAN) of some Sudanese crude oils (remove of naphthenic acid) by zeolite and clays. Two sample of zeolite and two samples of clay were used in this study, samples were collected from Hamshcoreep, Glabat and Hatana in east and middle Sudan, and synthetic zeolite was brought from Khartoum refinery. Samples were characterized by X-ray Diffraction (XRD) and the results showed that they are composed of Enstatite, Feldspar, N. Zeolite and synthetic Zeolite. These four samples were used to treat four portions of crude oil (obtained from two types of Sudanese crude oil, Fula blend and Tharjath blend). Total acid number (TAN) of crude oil samples was measured using 484 potentiometric titration instrument (ASTM D644) before and after treatment. One sample of clay, Enstatite, was characterized by Infrared (IR) before and after treatment with crude to insure the presence of acidic material on it after treatment. According to the obtained results, it is evident that Enstatite clay reduced TAN from 1.44mgKOH/g to 0.05mgKOH/g, natural Zeolite reduced TAN from 7.7mgKOH/g to 5.9mgKOH/g, Feldspar reduced TAN from 1.37mgKOH/g to 0.76mgKOH/g, and ZSM-5 Zeolite reduced TAN from 1.98mgKOH/g to 1.57mgKOH/g. In conclusion, all Zeolites and clays used in this study succeeded in decreasing (TAN) of crude oil when they were treated in high temperature (200-220 deg°C.).
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    SIMULATION FOR STRATEGY OF MAXIMAL WIND ENERGY CAPTURE OF DOUBLY FED INDUCTION GENERATORS
    (جامعة الوادي - university of el oued, 2012) Tria, F; Ben Attous, D
    In the control of the wind generation, the maximal power point tracking (MPPT) control plays important role in the efficiency. This paper presents the simulation results of the MPPT control based DFIG model. At first, it analyzes the vector-control scheme for the MTTP, which results in independent control of active and reactive power of the generator. And then, it develops the MPPT controller implemented on the rectifier and inverter based on PI control
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    SIMULATION PAR FLUENT DU REFROIDISSEMENT DES AUBES D'UNE TURBINE A GAZ
    (جامعة الوادي - university of el oued, 2012) Mansouri, M.T; Belghar, N
    This article concerns a study analytically and numerically the cooling of the dawn of a gas turbine. We used the Fluent software to simulate the aerodynamic effects and the thermal influence on the blade. We are interested primarily in the theoretical study of this technique applied to film cooling of a flat plate and then looking at the numerical simulation by Fluent model with a k-ε turbulence standard was used to model the turbulent flow where there is much more interested in the thermal aspect of this type of flow trying to explore the effect of temperature on the blade.
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    SIMULATION STUDY FOR PRODUCTION OF HEAVY OIL: A CASE STUDY OF SOROOSH OIL FIELD, SOUTHERN IRAN
    (جامعة الوادي - university of el oued, 2015) Abbasi, Abbasi ,MM; Sanati, Sanati, A A; Allahyari, Allahyari, M M
    Effectiveness of two enhanced oil recovery techniques on recovery of Soroosh oil field, an Iranian offshore oil field is investigated and compared. The approach used is the numerical reservoir simulation by means of a well-known numerical reservoir simulator, Eclipse, and the real full field model. Water injection and immiscible gas injection processes have been simulated and compared in terms of ultimate recovery factor. It was found that natural production of oil by depletion and water drive from aquifer will result in very low ultimate recovery factor. Simulation runs also showed that water flooding can be efficient just for upper high permeability layers which contain lighter oil. Finally, from the gas injection simulation runs, it was found that immiscible gas injection can enhance ultimate recovery to 27% which is higher than that of water flooding. The decline rate of production during gas injection was slower than that of water flooding, which.
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    STUDY OF BOIL- OVER PHENOMENON, THE ALGERIAN. PETROLEUM AS A MODEL FOR INSPECTION
    (جامعة الوادي - university of el oued, 2015) Ghodbane, M
    With the development of oil facilities, development of industrial security and evolved methods of preventionn but industrial risks always remain present. In this work, we we'll examine a very serious phenomenon, which “Boil-Over”. This phenomenon appears in petroleum reservoirs (oil has a high viscosity), and that in the event of a fire on the roof of the tank with the presence of water at the bottom of the tank. We chose the Algerian Petroleum to conduct this study. We will talk to the disastrous results of this phenomenon, and risks to all people, equipment and the environment.
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    Study on the effect of Cetyltrimethylammonium bromide surfactant on static holdup and mother drops’ size in rotating disc columns
    (جامعة الوادي - university of el oued, 2014) Najafabadi, Mehdi Sattari
    Local and average static holdup and also mother drops’ size of dispersed phase in rotating disc column (RDC) and rotating sieved disc column (RSDC) have been investigated experimentally for water-kerosene chemical system. Experiments consist of five different CTAB concentrations in continuous phase and for each concentration five different rotor speeds. The presence of used surfactant in continuous phase not only reduced amounts of local and average static holdup in both columns, but it also greatly affected the variation process of local static holdup in the columns. Besides, CTAB reduced mother drops’ size in both columns. As rotor speed went up in RDC, local and average static holdup decreased. In RSDC column, enhancement of rotor speed from zero to 150 rpm caused increase of static holdup but when the speed of rotors went up more, this hydrodynamic parameter decreased