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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Material Balance"”.
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Convergence of material balance in mathematical simulation of petroleum reservoirs
… by a simulation model is the accuracy of the material balance. A high degree of precision in the calculated pressures is a necessary condition for elimination of error in prediction of fluid migration in the reservoir. However, this condition is not sufficient to guarantee accuracy of the …
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Effect of varying reservoir fluid properties on material balance calculations, Bu-Attifel oil field, Libya
Includes bibliographical references.
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Mathematical simulation of gas and water coning in petroleum reservoirs by the dynamic material balance technique
… is a method which first computes the correct material balance and then calculates the saturation necessary to maintain this balance under the current flowing conditions. This work presents the results obtained from a coning model which used this technique. These results indicate that the model …
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Solvent extraction of lubricating oils
… the transfer coefficients based on a “no loss” material balance, Viscosity Gravity Constant for each extraction and the contact area in conjunction with the material balance when a cylinder stock out of midcontinent oil was subjected to furfural refining in a one-inch in nominal diameter pyrex …
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Formation and dissociation reaction rates and relevant kinetic behavior of propane gas hydrate (PGH)
… yielding the satisfactory, reproducible material balance. Quantitative overall reaction rates of PGH formation and dissociation were derived and orders of the above reactions were experimentally obtained.
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Model for a Shale Gas Formation with Salt-Sealed Natural Fractures
… directly related to the leakoff volume. A simple material balance model tracks salt dissolution by leaked off fracturing fluid and estimates the resulting stimulated rock volume.
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Break-in behavior of a tungsten oxide on silica catalyst during propylene disproportionation
… behavior of the catalyst were determined. A material balance around the reactor was made for each gas by pulse reactor techniques.
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Material flow simulation in a nuclear chemical process
… fuel reprocessing plant the special nuclear materials (SNM) are received as constituents of spent fuel assemblies, are converted to liquid form, and undergo a series of chemical processes. Uncertainties in measurements of SNM at each stage of reprocessing limit the accuracy of simple material …
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Understanding of Ammonia Transport In Pem Fuel Cells
… 5631 MEAs at 70oC, the data were obtained with a material balance technique, which uses an ion selective electrode (ISE) to determine the concentration of ammonium ion in the process streams. The results indicate that ammonia was not transported across the membrane when the feeds to both …
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Dynamics of biofilm processes in an annular reactor
… and carbon requirements for microbial growth. Material balance relationships are developed which are useful in analyzing the interrelated processes contributing top biofilm development. Rate expressions, which are a function of reactor substrate concentration and biofilm mass are presented for …
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Recycling of plastics derived from end-of-life (EOL) electronic equipment
… under optimized conditions. Overall mass balances checked for each experiment. Recovery in all experiments in this study is over 95% by making material balance.;Cyclohexane and acetone were appropriate solvents for PS and ABS respectively. Water and ethanol were used as antisolvents. …
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Program for Predicting the Densities and Pressure of Invert Elviulsion Muds Under Static Well Conditions
… emulsion muds and base fluids. A compositional material balance model was used to predict the densities of synthetic and oil based muds at different temperatures and pressures under static hole conditions. A program for predicting the densities of different synthetic and oil-based muds under …
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The business case for continuous manufacturing of pharmaceuticals
… defining the process flow, performing the material balance, estimating the capital costs, and estimating the operating costs. This analysis shows that for the particular Novartis product considered, a continuous process is an improvement over the batch process in four performance …
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Integrated evaluation of wet gas reservoir : minimizing volumetricuncertainties using dynamic analysis
… different procedures such as the volumetric, Material Balance,Reservoir Simulation, Decline Curve Analysis (Production performance analysis), whichdepends on the understanding of the physical flow characterization of the formation, productiondata, and recently dynamic nature of reserves. While …
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Process and reactor design study of lignin propoxylation
… products adds the highest value to the raw material. Production of engineering plastics from lignin is an attractive approach to the utilization of lignin. The use of lignin in structural materials is limited by its insolubility and its failure to undergo melt flow. A promising method to …
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Hydrothermal Process for Bioenergy Production From Corn Fiber and Swine Manure
With the increasing concerns about the net energy balance of corn ethanol, food prices, and efficiency of the corn milling process, other types of liquid fuels such hydrocarbons from thermochemical conversion of biomass have become potentially promising. This study aims at investigating the …
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Hydrometallurgical Processing Of Rare Earth Elements From Ion Adsorption Clays
… of diffusion, heap permeability, and material balance to mimic the heap leach scenario. A comprehensive understanding of the leaching mechanism is crucial for achieving high extraction efficiency with low cost and less environmental impact. A series of inorganic salts with different …
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Aluminium smelting cell control and optimisation
… industrial aluminium reduction cells and their material handling and dry scrubbing operation were analysed in respect to their energy and material balance. A number of experiments were carried out to study the influence of process parameters and operations on the state and path function of a …
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An Analysis Of The Impact Of Storage Temperature, Moisture Content & Duration Upon The Chemical Components & Bioprocessing Of Lignocellulosic Biomass
… matter loss and composition change to develop a material balance around carbohydrates and lignin.</p> <p>A mean dry matter loss of 24% was observed at 8 weeks in sweet sorghum stored at high moisture content (26% w/w). Soluble sugars predominated the dry matter loss in high-moisture sorghum, …
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Estudio de prefactibilidad para la instalación de una planta para la elaboración de pañales desechables de bambú
… location and micro location (availability of raw material, proximity to the target market, availability of land, among others) considering the most appropriate alternative to the Callao district. The capacity of the production plant was also found, for which a material balance was carried out, the …
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