Investigation of the Water-In-Oil Emulsions Destruction by Radio-Frequency Electromagnetic Field

2008 ◽  
Vol 6 ◽  
pp. 101-106
Author(s):  
L.A. Kovaleva ◽  
R.R. Zinatullin ◽  
R.Z. Minnigalimov
Keyword(s):  
Electromagnetic Field ◽  
Radio Frequency ◽  
Water Content ◽  
Experimental Studies ◽  
Dielectric Measurements ◽  
Oil Emulsions

The possibility of applying a radio-frequency electromagnetic field for the destruction of water-oil emulsions is substantiated. The article presents the results of dielectric measurements of water-in-oil emulsions with different water content in the emulsion, as well as the results of experimental studies of the water-in-oil emulsions destruction in a radio-frequency electromagnetic field.

scholarly journals Исследования диэлектрических свойств нефтяных дисперсных систем в зависимости от соотношения асфальтосмолистых веществ

2022 ◽  
Vol 48 (4) ◽  
pp. 41
Author(s):  
Р.Р. Зиннатуллин ◽  
Л.А. Ковалева
Keyword(s):  
Molecular Weight ◽  
Electromagnetic Field ◽  
Dielectric Properties ◽  
Radio Frequency ◽  
High Molecular Weight ◽  
Experimental Studies ◽  
Frequency Range ◽  
Dielectric Parameters ◽  
Dispersed Systems ◽  
Polar Components

The degree of influence of the electromagnetic field on oil dispersed systems depends on the dielectric properties of these systems, in particular oil. Dielectric properties of oil depend on the content of high molecular weight polar components: asphaltenes and resins. In this regard, a study was carried out of the dielectric properties of oil in the radio-frequency range, depending on the content of asphalt-resinous substances in it. The obtained results of experimental studies show the correlation of dielectric parameters with the ratio of the content of resins and asphaltenes in oil.

Numerical Study of Emulsion Droplet in Electromagnetic Field

2012 ◽  
Author(s):  
Liana Kovaleva ◽  
Ayrat Musin ◽  
Yulia Fatkhullina ◽  
Yuriy Zamula ◽  
Rasul Zinnatullin ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Numerical Solution ◽  
Electromagnetic Fields ◽  
Numerical Study ◽  
Experimental Studies ◽  
Emulsion Droplet ◽  
Droplet Dynamics ◽  
Oil Emulsion ◽  
Oil Emulsions ◽  
Water In Oil Emulsion

Some results of experimental studies of the water-in-oil emulsions in RF and MW electromagnetic fields are presented. In an attempt to understand the phenomenon a mathematical model for a single emulsion droplet dynamics in radio frequency (RF) and microwave (MW) electromagnetic fields is formulated. An algorithm for numerical solution of the problem is developed. The problem is solved accounting for the thermal motion induced by electromagnetic field in the fluid within the water droplet and in the surrounding liquid. The numerical solution revealed that the structures of arising convective flows induced by RF and MW electromagnetic fields are different. The results can help to understand the physical mechanisms of water-in-oil emulsion destruction in electromagnetic field.

Destruction of water-in-oil emulsions in electromagnetic fields in a dynamic mode

2012 ◽  
Vol 9 (1) ◽  
pp. 110-115
Author(s):  
L.A. Kovaleva ◽  
R.R. Zinnatullin ◽  
V.N. Blagochinnov ◽  
A.A. Musin ◽  
Yu.I. Fatkhullina ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Dynamic Mode ◽  
Droplet Dynamics ◽  
Oil Emulsion ◽  
Numerical Studies ◽  
Em Field ◽  
Oil Emulsions ◽  
Water In Oil Emulsion

Some results of experimental and numerical studies of the influence of radio-frequency (RF) and microwave (MW) electromagnetic (EM) fields on water-in-oil emulsions are presented. A detailed investigation of the dependence of the dielectric properties of emulsions on the frequency of the field makes it possible to establish the most effective frequency range of the EM influence. The results of water-in-oil emulsion stability in the RF EM field depending on their dielectric properties are presented. The effect of the MW EM field on the emulsion in a dynamic mode has been studied experimentally. In an attempt to understand the mechanism of emulsion destruction the mathematical model for a single emulsion droplet dynamics in radio-frequency (RF) and microwave (MW) electromagnetic fields is formulated.

Demulsification of a Water-in-crude Oil Emulsion with a Corn Oil BasedDemulsifier using the Response Surface Methodology: Modelling and Optimization

2021 ◽  
Vol 14 ◽  
Author(s):  
Abed Saad ◽  
Nour Abdurahman ◽  
Rosli Mohd Yunus
Keyword(s):  
Response Surface Methodology ◽  
Crude Oil ◽  
Water Content ◽  
Response Surface ◽  
Separation Efficiency ◽  
Corn Oil ◽  
Oil Emulsion ◽  
Optimal Values ◽  
Input Variables ◽  
Oil Emulsions

: In this study, the Sany-glass test was used to evaluate the performance of a new surfactant prepared from corn oil as a demulsifier for crude oil emulsions. Central composite design (CCD), based on the response surface methodology (RSM), was used to investigate the effect of four variables, including demulsifier dosage, water content, temperature, and pH, on the efficiency of water removal from the emulsion. As well, analysis of variance was applied to examine the precision of the CCD mathematical model. The results indicate that demulsifier dose and emulsion pH are two significant parameters determining demulsification. The maximum separation efficiency of 96% was attained at an alkaline pH and with 3500 ppm demulsifier. According to the RSM analysis, the optimal values for the input variables are 40% water content, 3500 ppm demulsifier, 60 °C, and pH 8.

Experimental studies of heating rheologically complex fluids with electromagnetic field

2016 ◽  
Vol 54 (4) ◽  
pp. 612-614 ◽  
Author(s):  
L. A. Kovaleva ◽  
R. R. Zinnatullin ◽  
A. I. Mullayanov ◽  
I. I. Shrubkovskii
Keyword(s):  
Electromagnetic Field ◽  
Complex Fluids ◽  
Experimental Studies

CORRELATION DEPENDENCES OF THE BENDING STRENGTH OF POLYMER COMPOSITE MATERIALS MODIFIED IN A MICROWAVE ELECTROMAGNETIC FIELD ON THE MOISTURE CONTENT DURING EXPOSURE IN FULL-SCALE CONDITIONS

2021 ◽  
pp. 3-9
Author(s):  
I. V. Zlobina ◽  
I. S. Katsuba
Keyword(s):  
Electromagnetic Field ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Moisture Content ◽  
Bending Strength ◽  
Climatic Factors ◽  
Experimental Studies ◽  
Three Point Bending ◽  
Treated Carbon ◽  
Control Samples

Experimental studies of the influence of external climatic factors, taking into account exposure, on the change in the bending strength of control and microwave – treated carbon and fiberglass samples in the cured state were performed. An increase in the limit stresses of three – point bending of experimental carbon fiber samples compared to the control ones was found by 7…12 %, and fiberglassby 4…7 %. It is shown that with an increase in exposure to 14 months, the strength of control samples of carbon and fiberglass decreases by an average of 10 %. At the same time, the strength of the prototypes is reduced only by 4.4 %. With an increase in the moisture content of both control and experimental samples, a decrease in their strength is observed. In this case, the linear correlation is average (from– 0.44 to – 0.615). It is established that for experimental samples, the influence of the amount of absorbed moisture on the strength is manifested to a much lesser extent. For carbon fiber, the reduction is 16.6 %, for fiberglass – 12 %.

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