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Liquid-Liquid Extraction With First Order Reaction : A Mathematical Simulation, Alan Wayne Smith

Masters Theses

"Models for mass transfer to droplets based on film theory with first order chemical reaction are proposed and compared with experimental data. The experimental extraction data is available from the work by Andoe (1968). The physical system used was benzene as a continuous phase and water as a dispersed phase with 2-chloro-2- methyl propane the solute diffusing into and reacting in the droplet. This system had a high interfacial tension (31.0 dynes/cm) and droplet Reynolds numbers ranging from 600 to 1345.

The predicted results of this work are in the form of the dimensionless total mass transferred to the droplet …

Quantitative Overdesign By Stochastic Simulation, Raymond A. Freeman

Masters Theses

"The determination of overdesign, or safety, factors for industrial processes is an art acquired by the engineer through experience. In general, safety factors are increased as the uncertainty of the process variable increases; a procedure that can be expensive if safety factors are specified too small or too large. A single release of harmful substances from pollution control installations may cause irreparable damage. Likewise, the production of an off specification product by a chemical process costs money and resources. These facilities must often be designed for widely fluctuating flow rates, compositions, temperatures, and etc. Consequently, the selection of the proper …

Disposal Of Cattle Feedlot Wastes By Anaerobic Digestion, Eric Bayard Rapp

Masters Theses

"Disposal of animal waste represents a severe environmental problem, particularly in areas such as cattle feedlots where livestock are concentrated. Animal waste can be converted to carbon dioxide and methane by the autocatalytic process of anaerobic fermentation. A scheme, based upon this process, for the disposal of the waste from two different size feedlots is presented. The design of this process is based on kinetic data from the literature which are fitted to a kinetic model including diffusional resistances. Economic calculations based upon available cost data are made to determine the profitability of the process. Economic evaluations indicate that this …

Relative Volatility In The System 1-Butene - N-Butane, Steven Lewis Walker

Masters Theses

"An apparatus suitable for the rapid collection of P-x data at constant T is described. Isothermal P-x data at 40, 70, 100, 130, and 160 degrees Fahrenheit at the extremes of the composition range for the 1-butene - n-butane system are presented as a demonstration of the suitability of the device for its intended purpose. Limiting values of the relative volatility for the binary are presented. The relative volatilities were calculated using limiting forms of the general coexistence equation which are given in the literature. Several recommendations are given for improvements of the equipment and experimental technique"--Abstract, page ii.

Mass Transfer Coefficients Determined By Simplex Optimization Techniques, Charles Ferris Callihan

Masters Theses

"The objective of this thesis is to develop a method for obtaining individual mass transfer coefficients in absorption columns. There are two assumptions which apply throughout the thesis. The first assumption is "plug flow." The second assumption is that the axial concentrations can be measured accurately enough.

The problem is approached by simulating data generated from a mathematical model of an absorption column. A response surface is defined which is a function of the individual mass transfer coefficients. The lowest point on the surface locates the individual mass transfer coefficients for the system in question.

The mathematical model of the …

Heat Transfer Of A High Prandtl Number Oil In Laminar Flow, John Robert Lee Iii

Masters Theses

"A numerical model was developed for the purpose of studying the flow and heat transfer of a hypothetical oil in laminar flow within a horizontal pipeline. Free convection, work of compression, and axial conduction were neglected, but the fluid properties - i.e., density, specific heat, viscosity, and thermal conductivity - were allowed to vary and the effect of viscous dissipation was included in the analysis of the system.

The mathematical forms of the momentum, continuity, and energy equations require that numerical solutions be obtained with a digital computer. These numerical approximations of the partial differential equations are presented and the …