Water-in-Oil Emulsions Separation Using a Controlled Multi-Frequency Acoustic Field at an Operating Facility

Abstract

Separation of water-in-oil emulsion is a significant part of the cost of oil production due to the use of expensive demulsifiers and additional heating of the emulsion by burning associated petroleum gas. The article discusses an acoustic method that enables the increasing of the rate of separation of the emulsion. In field conditions, tests were carried out in which the efficiency of separation in the acoustic field was determined depending on the temperature of the product, the concentration of the demulsifier, and the frequency and time of exposure to the emitter. The results obtained allow us to talk about a significant reduction in the consumption of demulsifiers, a decrease in the influence of temperature on the phase separation process and an increase in the efficiency of oil treatment at existing facilities.

Development of technology for the preparation of heavy-duty concrete mixtures by processing with an ultrasonic multi-frequency acoustic field

“…Each operation is tied with a pumping circuit, and the possibility of additional activation is provided in the supply sleeve. Ultrasonic exciters on the sleeve are mounted by a non-welded method (according to the «T-crest» scheme [27]) and are installed at a distance calculated depending on the speed and volume of the solution supply (sleeve diameter). It should be noted that the use of the proposed technology does not require changing the traditional scheme of preparation of concrete mortar, which saves capital costs of the construction organization.…”

“…When an alternating voltage is applied to a pair of crystal faces, a mechanical effect of compression and stretching occurs, as a result of which the crystal begins to oscillate. When the frequency of the supplied voltage coincides with the frequency of the natural vibrations of the crystal, the latter begins to resonate and generate ultrasonic waves [27]. The resonant system of the piezo-emitter is multi-frequency, which avoids the phenomenon of a «standing wave» [22].…”