Dielectric polarizability of organic liquids subjected to high pressures

Wide-range equations of state for organic liquids

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2007.1.011 ◽

2007 ◽

Vol 5 ◽

pp. 113-120 ◽

Cited By ~ 1

Author(s):

R.Kh. Bolotnova

Keyword(s):

High Pressures ◽

Equations Of State ◽

Organic Liquids ◽

Liquid Phases ◽

Wide Range ◽

High Pressures And Temperatures

The method of construction the wide-range equations of state for organic liquids, describing the gas and liquid phases including dissociation and ionization which occurs during an intense collapse of steam bubbles and accompanied by ultra-high pressures and temperatures, is proposed.

Download Full-text

Solubilities and mass transfer coefficients of carbon monoxide in a gas-inducing reactor operating with organic liquids under high pressures and temperatures

Chemical Engineering Science ◽

10.1016/0009-2509(92)85068-m ◽

1992 ◽

Vol 47 (13-14) ◽

pp. 3541-3548 ◽

Cited By ~ 2

Author(s):

Min-Yan Chang ◽

Badie I. Morsi

Keyword(s):

Mass Transfer ◽

Carbon Monoxide ◽

High Pressures ◽

Organic Liquids ◽

Transfer Coefficients ◽

Mass Transfer Coefficients ◽

High Pressures And Temperatures ◽

Reactor Operating

Download Full-text

The effects of pressure on the density, dielectric constant, and viscosity of several hydrocarbons and other organic liquids

Canadian Journal of Chemistry ◽

10.1139/v69-147 ◽

1969 ◽

Vol 47 (6) ◽

pp. 893-899 ◽

Cited By ~ 104

Author(s):

D. W. Brazier ◽

G. R. Freeman

Keyword(s):

Molecular Structure ◽

Dielectric Constant ◽

Carbon Tetrachloride ◽

Pressure Range ◽

High Pressures ◽

Liquid Structure ◽

Dielectric Constants ◽

Pressure Effects ◽

Organic Liquids ◽

Increasing Temperature

The effects of pressures up to 4 kbar on the density, dielectric constant, and viscosity of n-pentane, n-hexane, n-octane, cyclopentane, methylcyclohexane, and 2,2-dimethylbutane (DMB) were measured at 30 °C. The pressure effects on the viscosities of n-hexane and n-octane were also determined at 0 and 60°. The densities of diethyl ether and cyclopentanone and the dielectric constant of carbon tetrachloride at high pressures are also recorded. The densities of the hydrocarbons increased by 20–30% and the dielectric constants increased by 11–16% as the pressure was increased from 1 to 4000 bars at 30°, but the viscosities increased by 695–2352% over the same pressure range. Carbon tetrachloride froze at 1500 bars at 30°, and cyclopentanone froze at 3500 bars at about 20°. In agreement with earlier work on other liquids, the value of the Clausius–Mosotti function (ε − 1)V/(ε + 2) for the present compounds decreased slightly with increasing pressure. The viscosity at a given pressure decreased slightly with increasing temperature, and temperature effect increased with increasing pressure. In general, the smaller the compressibility of the liquid, the greater was the effect of pressure on the viscosity; DMB was an exception because its viscosity increased abnormally rapidly with pressure. Molecular structure and liquid structure have greater influences on the pressure dependence of viscosity than on that of density or dielectric constant.

Download Full-text

Hydrodynamic and Mass Transfer Parameters in Agitated Reactors Part I: Critical Mixing Speed, Induced Gas Flow Rate, and Wavy Surface in SARs and GIRs

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.1155 ◽

2004 ◽

Vol 2 (1) ◽

Cited By ~ 1

Author(s):

Romain Lemoine ◽

Benoit Fillion ◽

Badie I Morsi

Keyword(s):

Flow Rate ◽

High Speed ◽

Gas Flow ◽

High Pressures ◽

Operating Conditions ◽

Organic Liquids ◽

Gas Flow Rate ◽

Mixing Speed ◽

Liquid Height ◽

Critical Mixing

The critical mixing speed for gas entrainment (NCRE), for gas induction (NCRI), induced gas flow rate (QGI) as well as the wavy gas-liquid interfacial area (aWave) of N2 and air were measured in pure toluene and three mixtures of organic liquids (toluene-benzoic acid-benzaldehyde mixtures) under wide ranges of temperatures, T (300-453K), pressures, P (1-15 bar), mixing speeds, N (13.3-23.3Hz) and liquid heights, H (0.171-0.268m) using a 4-liter, see-through agitated autoclave operating as a surface-aeration reactor (SAR) and gas-inducing reactor (GIR).NCRE and NCRI as well as aWave were estimated by analyzing the videos taken with an on-line high-speed Phantom camera through the reactors Jerguson windows. In the GIR, QGI was determined using a highly sensitive Coriolis mass flow meter. The Central Composite Statistical Design and analysis technique was used to study the effect of operating conditions on these hydrodynamic parameters.NCRE and NCRI appeared to increase with liquid height and decrease with temperature, whereas, the pressure and gas nature did not significantly affect both parameters. The liquid physicochemical properties were found to strongly affect NCRE and NCRI, and QGI. Increasing mixing speed or decreasing liquid height increased QGI. Increasing temperature or decreasing liquid viscosity initially increased and then decreased QGI. Increasing pressure or gas density on the other hand decreased QGI. Increasing mixing speed and temperature or decreasing liquid height significantly enhanced aWave, as compared to the flat liquid surface. At high pressures, however, lower values of aWave were obtained. Empirical and statistical correlations were also developed to accurately predict NCRE, NCRI, QGI and aWave.

Download Full-text