Master of Engineering Science
Chemical and Biochemical Engineering
To evaluate the suitability of ultrasonic techniques for on-line process monitoring applications, an ultrasonic probe was used to measure acoustic velocity, acoustic impedance, and isentropic compressibility of hydrocarbons (including n-, iso-, and cycloalkanes, toluene, mineral oil, and crude oil) and polar liquids (alcohols, water, salt water) over a temperature range of 25-60°C. Temperature, carbon chain length, molecular shape, and intermolecular forces had significant effects on ultrasonic parameters. Relationships between media characteristics and observed ultrasonic parameters were modeled using empirical-least squares equations. The same parameters were measured in binary mixtures of hydrocarbons in heptane, as well as polar liquids in ethanol. Experimental values were presented as a function of volume fraction and compared to ideal mixing conditions. Excess quantities were computed and shown in a similar manner. Ultrasonic techniques were demonstrated to be effective in estimating ethanol content in n-heptane (representing gasoline) and for detecting volatile losses for stored crude oil.
Cooke, William A., "Development of Ultrasonic Techniques for Characterization of Liquid Mixtures" (2016). Electronic Thesis and Dissertation Repository. 4225.
Available for download on Friday, September 29, 2017
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