Viscosity Of Binary Systems Research Articles

Nonlinear Regression Analysis of Binary Flooding Recovery Influence Factors

To better reveal the laws of binary (SP) oil flooding, based on the physical simulative experimental results of Berea core (400mD), the nonlinear regression method of the probability statistics theory and SPSS software was applied to conduct a weight analysis for the main influence factors of the binary oil flooding. The results show that the three factors of the viscosity of binary system, the composite emulsifying index and the interfacial tension affect the chemical flooding recovery and the total recovery significantly. The results of the forced introduction method show that the reliability of the effect of the three factors on y1, namely the chemical flooding recovery, is higher than 99%. The stepwise introduction method and the backward elimination method prove that the reliability of the effect of the three factors on y2, namely the total recovery, is higher than 95%. The results also indicate that emulsification affects the binary chemical flooding recovery of moderately and highly penetrated sandstone cores more significantly.Introduction

Experimental and modeling investigations of solubility and saturated liquid densities and viscosities for binary systems (methane +, ethane +, and carbon dioxide + 2-propanol)

Solubilities of methane, ethane, and carbon dioxide in 2-propanol have been measured at the temperatures (303 and 323)K and at the pressures up to 6MPa using an in-house designed PVT apparatus. The saturated liquid properties, density and viscosity, were also measured in each experiment. Prior to the phase equilibrium measurements, the density and viscosity of pure 2-propanol were measured at the temperatures (303 and 323)K over the pressure range (0.1 to 10)MPa. The dissolution of carbon dioxide in 2-propanol caused a decline in the viscosity of saturated liquid phase while an increase in the density of gas-expanded liquid was observed. The viscosity-pressure trends for methane- and ethane-saturated liquid viscosities were similar to carbon dioxide, but the saturated liquid densities decreased with the dissolution of methane and ethane in 2-propanol. Solubility increased with pressure and decreased with temperature for all compressed gases (methane, ethane and carbon dioxide). The experimental data were well correlated using Soave–Redlich–Kwong and Peng–Robinson equations of state. The solubilities and saturated liquid densities were well represented with both equations of state, and there is no superior equation of state for the modeling of the phase compositions and saturated liquid densities.

Experimental Investigation on Binary Compound System Performance Changes During Migration

The authors created a 30 m long physical model. Many sampling points are arranged on different location of the model. By collecting sample at the real time, chemical concentration, viscosity, and other properties of binary compound system were measured separately. Results from the experiment show that from model import to model export, the chemical concentration and viscosity of binary system is gradually declining. The loss of surfactant concentration is much larger than that of polymer concentration, and viscosity loss of the binary system is greater than concentration loss of polymer.

Prediction of the Liquid Viscosities of Pure Components and Mixtures Using Neural Network and ASOG Group Contribution Methods

This study proposes a simple method for predicting liquid viscosities of pure components and mixtures from chemical structures only. Initially, the constants B and T 0 used in a modified Andrade equation for pure liquid viscosity were predicted using a three-layer neural network method with an error back-propagation learning algorithm. The network was trained using 194 data sets and information concerning 29 chemical groups was used as descriptors of input. The components covered were paraffines, olefins, alkynes, aromatic hydrocarbons, chlorides, bromides, alcohols, ketones, esters, ethers, aldehydes and organic acids. The temperature range is approximately the melting point to the bubble point of the compounds and the average and maximum deviations of viscosity are 9.5 and 14.3%, respectively. The viscosities of binary systems were predicted using the ASOG-VISCO group contribution method. This study covers mixtures composed of CH2, ArCH, CyCH, OH, H2O, CO and COO groups with a temperature range of 293.15–303.15 K. and an average deviation of viscosities of 4.5%.

Calculation of Viscosity of Ternary and Quaternary Liquid Mixtures

The calculation of the viscosity of 51 multicomponent (48 ternary and 3 quaternary) nonelectrolyte liquid systems has been performed by means of a model based on Eyring's theory of viscous flow and the UNIQUAC equation. More than 1000 viscosity data points, under 0.1 MPa and in the temperature range of 283.15−323.15 K, have been calculated. The model is based on pure-component viscosities, pure-component molar volumes, and pure-component size and shape parameters, as well as two interaction parameters per binary system. The model binary interaction parameters were determined previously by correlation of experimental literature data on the viscosity of binary systems. A rather good agreement between experimental and calculated viscosities of ternary and quaternary liquid mixtures has been achieved. The overall mean relative standard deviation of the calculation is 2.95%. The results show that the model is adequate for estimating liquid mixture viscosities for different types of mixtures containing polar and nonpolar components.

Determination of Potential Functions for Unlike Interactions from Transport Properties of Dilute Gases

AbstractCalculations are reported to illustrate that whenever possible it is preferable to utilise binary diffusion coefficients to determine potential functions rather than the cross‐term viscosity coefficients extracted from viscosities of binary systems.

Excess volumes and viscosities of binary systems containing 4-methyl-2-pentanone

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExcess volumes and viscosities of binary systems containing 4-methyl-2-pentanoneMaurizio Fermeglia, Romano Lapasin, and Giovanni TorrianoCite this: J. Chem. Eng. Data 1990, 35, 3, 260–265Publication Date (Print):July 1, 1990Publication History Published online1 May 2002Published inissue 1 July 1990https://doi.org/10.1021/je00061a011RIGHTS & PERMISSIONSArticle Views143Altmetric-Citations74LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (488 KB) Get e-Alerts Get e-Alerts

Effect of the Compatibility of Rubbers on the Viscous Flow Properties of Their Binary Mixtures

Abstract The viscosity of binary systems of incompatible polymers is lower than that of the individual rubbers. In the case of compatible polymers, the viscosity of the systems changes additively with its composition or may increase somewhat. The degree of compatibility of the polymers affects the size of the entrance effect and the character of its dependence on strain rate.

On the Viscosity of Binary System

先に筆者は沸點を考慮に入れた粘度式を提出し,之を種々の有機同族體に適用してその適用性を確め,更に恒數間に存在する二三の規則性を見出した.本論文に於て其の粘度式を二成分系に擴張せんとし,先づヘクサン〓デカン系に於てその適用性を驗し更に三つの系就て粘度の測定を行ひ,その實測値と比較して満足すべき一致を見出した.